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WO2024001896A1 - Système de commande de température de batterie, batterie à haute capacité, bloc-batterie, coque de batterie et appareil d'échange de chaleur - Google Patents

Système de commande de température de batterie, batterie à haute capacité, bloc-batterie, coque de batterie et appareil d'échange de chaleur Download PDF

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Publication number
WO2024001896A1
WO2024001896A1 PCT/CN2023/101617 CN2023101617W WO2024001896A1 WO 2024001896 A1 WO2024001896 A1 WO 2024001896A1 CN 2023101617 W CN2023101617 W CN 2023101617W WO 2024001896 A1 WO2024001896 A1 WO 2024001896A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
heat exchange
temperature control
battery
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/101617
Other languages
English (en)
Chinese (zh)
Inventor
张三学
雷政军
李鹏
常城
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaanxi Olympus Power Energy Co Ltd
Original Assignee
Shaanxi Olympus Power Energy Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202221626656.0U external-priority patent/CN218498156U/zh
Priority claimed from CN202210735881.6A external-priority patent/CN115207513A/zh
Priority claimed from CN202210739160.2A external-priority patent/CN115172944A/zh
Priority claimed from CN202210927679.3A external-priority patent/CN115312907A/zh
Priority claimed from CN202210929700.3A external-priority patent/CN115395133A/zh
Priority claimed from CN202222273290.XU external-priority patent/CN218957851U/zh
Priority claimed from CN202211453654.0A external-priority patent/CN117525663A/zh
Priority claimed from CN202223188949.8U external-priority patent/CN219144268U/zh
Priority claimed from CN202320332940.5U external-priority patent/CN219658815U/zh
Priority claimed from CN202320958703.XU external-priority patent/CN219873708U/zh
Application filed by Shaanxi Olympus Power Energy Co Ltd filed Critical Shaanxi Olympus Power Energy Co Ltd
Publication of WO2024001896A1 publication Critical patent/WO2024001896A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6552—Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • This application belongs to the field of batteries, and specifically relates to a battery temperature control system, a large-capacity battery, a battery pack, a battery casing and a heat exchange device.
  • Lithium-ion batteries have a wide range of applications and can be used in energy storage, power batteries and other fields. In recent years, with the further development of lithium-ion batteries, the safe use of lithium-ion batteries has also received attention. Due to the principle and structural characteristics of lithium-ion batteries, a large amount of heat will be generated during the charging and discharging process, and the heat will gradually increase. If the heat generated cannot be effectively released, the heat will accumulate in the single battery, causing the battery temperature to become unstable. Uniform, thus reducing the battery life. In severe cases, the thermal balance of the battery will be destroyed, triggering a series of self-heating side reactions and causing battery safety accidents.
  • Chinese patent CN215816107U discloses a lithium battery temperature control device based on a semiconductor refrigeration chip, which includes a temperature control device, a semiconductor refrigeration chip and a box cover. A temperature sensor is fixedly connected to the inside of the temperature control device. Through the semiconductor refrigeration chip and temperature sensor provided The temperature controller, heat sink, support block, protective net, motor, rotating block, connecting rod, push block, cooling fan and first spring are used for temperature control. When in use, the temperature of the lithium battery is sensed through the temperature sensor to determine the semiconductor refrigeration chip.
  • the above-mentioned temperature control device can dissipate a certain amount of heat from the battery.
  • the cooling efficiency of the above temperature control device is low, the structure is complex, and the temperature control cost is high.
  • this application provides a battery temperature control system, a large-capacity battery, a battery pack, a battery casing and a heat exchange device.
  • This application provides a battery temperature control system, which is mainly used to process the heat generated by the battery.
  • the battery temperature control system provided by this application specifically includes the following structural forms:
  • the battery temperature control system includes a heat conduction unit and a temperature control unit: the heat conduction unit includes at least one heat pipe, one end of the heat pipe is in contact with the pole, and the other end extends out of the pole; the temperature control unit includes at least There is a temperature control tube. The temperature control tube and the heat pipe extending to the outside of the pole realize heat exchange through a heat exchange device.
  • the temperature control pipe includes a single circulation pipeline, which is bent to form a liquid inlet pipe and a liquid return pipe arranged side by side.
  • the liquid inlet pipe and liquid return pipe arranged side by side are in contact with the heat pipe. Heat exchange is achieved through heat exchange devices.
  • the temperature control pipe includes a P circulation pipeline, which is bent to form a P liquid inlet pipe and a P liquid return pipe, wherein the liquid inlet pipe of the mth circulation pipe is connected to the P liquid return pipe.
  • the liquid return pipes of n circulation pipelines are arranged side by side.
  • the liquid inlet pipe and liquid return pipe arranged side by side and the heat pipe realize heat exchange through the heat exchange device.
  • P is an integer greater than or equal to 2
  • m is less than or equal to P
  • m ⁇ n is an integer greater than or equal to 2
  • the heat exchange device includes an insulating heat exchange plate, and the heat pipe and the temperature control tube are arranged on both sides of the insulating heat exchange plate, or the heat pipe and the temperature control tube are arranged on the same side of the insulating heat exchange plate.
  • the insulating heat exchange plate is a thermally conductive ceramic plate.
  • the thermally conductive ceramic plate is an alumina ceramic plate, a silicon nitride ceramic plate, a zirconia ceramic plate, a silicon carbide ceramic plate, a magnesium oxide ceramic plate, a boron nitride ceramic plate, an aluminum nitride ceramic plate, or a beryllium oxide ceramic plate.
  • the heat exchange device further includes a first pressure plate and/or a second pressure plate provided on both sides of the insulating heat exchange plate, and a heat conductive plate is provided on the first surface of the insulating heat exchange plate and/or the first pressure plate.
  • the heat pipe is arranged in the heat conduction groove
  • a temperature control groove is provided on the second surface of the insulating heat exchange plate and/or the second pressure plate
  • the temperature control tube is arranged in the temperature control groove.
  • the first surface and the second surface are two opposite end surfaces of the insulating heat exchange plate.
  • a heat conducting plate is provided between the second pressure plate and the insulating heat exchange plate.
  • the heat conducting plate is an aluminum plate, and a temperature control groove is provided on the heat conducting plate.
  • the heat conduction groove and the temperature control groove are semicircular grooves or arcuate grooves, and the heat pipe and the temperature control tube are extruded and deformed in the heat conduction groove and the temperature control groove to achieve close contact.
  • the liquid inlet pipe and the liquid return pipe of the temperature control tube are respectively arranged in the two temperature control grooves, and there are two heat pipes, respectively. Set in two thermal grooves.
  • the distance between the heat pipes and the temperature control pipes on both sides of the insulating heat exchange plate is set to the shortest.
  • thermocontrol grooves there are two temperature control grooves and one heat conduction groove, and the liquid inlet pipe and the liquid return pipe of the temperature control tube are respectively arranged in the two temperature control grooves.
  • the heat pipe, the liquid inlet pipe, and the liquid return pipe are staggered and located between the liquid inlet pipe and the liquid return pipe.
  • the heat exchange device is an insulating heat exchange sleeve
  • the heat pipe is inserted into the central cavity of the insulating heat exchange sleeve
  • the temperature control tube is arranged on the outer wall of the insulating heat exchange sleeve
  • the temperature control tube is inserted into In the central cavity of the insulating heat exchange sleeve
  • the heat pipe is arranged on the outer wall of the insulating heat exchange sleeve.
  • the insulating heat exchange sleeve is a thermally conductive ceramic sleeve
  • the thermally conductive ceramic sleeve is an alumina ceramic sleeve, a silicon nitride ceramic sleeve, a zirconia ceramic sleeve, a silicon carbide ceramic sleeve, a magnesium oxide ceramic sleeve, or a boron nitride ceramic sleeve.
  • temperature control tube or heat pipe is arranged on the outer wall of the insulating heat exchange jacket by winding.
  • the temperature control unit further includes a temperature control device connected to the temperature control tube to circulate the medium in the temperature control tube.
  • the present application provides a large-capacity battery, including the above-mentioned battery temperature control system; a jack is provided on the pole of the large-capacity battery, and the heat pipe is inserted into the jack.
  • the battery temperature control system includes a vapor chamber, a first cold source, a heat source and N groups of heat pipes.
  • Each group of heat pipes includes at least one cored heat pipe.
  • the vapor chamber is a gravity type heat pipe, and N is greater than or equal to 2.
  • the battery pack includes N batteries; one end of the N group of heat pipes is in contact with the poles of the N batteries respectively, and the other end of the N group of heat pipes is connected to the vapor chamber for heat exchange, and the first cold source is arranged on the vapor chamber.
  • the condensation end of the hot plate is used to actively cool the battery pack, and the heat source is arranged on the soaking plate to actively increase the temperature of the battery pack.
  • a second cold source is included, and the second cold source is arranged at the condensation end of the vapor chamber for passive cooling of the battery pack.
  • the second cold source includes a phase change box and a phase change material disposed in the phase change box; the condensation end of the vapor chamber is inserted into the phase change material of the phase change box to achieve contact with the phase change material. heat exchange.
  • one end of the vapor chamber inserted into the phase change box is provided with heat dissipation fins for increasing the heat exchange area between the vapor chamber and the phase change material.
  • the inner wall of the phase change box is provided with inner heat dissipation fins, and the inner heat dissipation fins and the heat dissipation fins of the heat plate are embedded and matched with each other to increase the heat transfer between the vapor chamber, the phase change material and the phase change box. exchange area.
  • external heat dissipation fins are provided on the outer wall of the phase change box, and the external heat dissipation fins are used to quickly transfer the heat in the phase change box to the outside.
  • the second cold source is a heat dissipation tooth, and the heat dissipation tooth is provided at the condensation end of the vapor chamber.
  • the battery pack is arranged inside the box, and the second cold source is arranged outside the box, or both the second cold source and the first cold source are arranged outside the box.
  • the first cold source is one of a TEC semiconductor refrigerator, a liquid circulation pipeline, a liquid cooling radiator, and a fan.
  • the heat source is one of a TEC semiconductor refrigerator, heating wire, heating plate, and liquid circulation pipeline.
  • each group of heat pipes realizes heat exchange with the vapor chamber through a heat exchange device.
  • the heat exchange device includes: The first pressure plate, the insulating heat exchange plate and the second pressure plate are arranged, the cored heat pipe is arranged in the groove of the first pressure plate, and the heat soaking plate is arranged between the second pressure plate and the insulating heat exchange plate.
  • the insulating heat exchange plate is a thermally conductive ceramic plate, and the cored heat pipe is extruded and deformed in the groove of the first pressure plate, so that the side of the cored heat pipe close to the thermally conductive ceramic plate is extruded into a flat surface for increasing Heat transfer efficiency.
  • the battery temperature control system includes a heat conduction part and a heat exchange part.
  • An insulating heat conduction sheet is provided between the heat conduction part and the heat exchange part.
  • the heat conduction part includes a heat pipe, a first mounting part and a second mounting part.
  • the first mounting part is fixedly arranged outside the battery housing, the heat pipe extends through the battery housing and into the battery housing, and a first receiving groove is provided between the first mounting part and the second mounting part to The first mounting part and the second mounting part are fastened together to accommodate the heat pipe; the heat exchange part and the heat conduction part perform heat exchange through the insulating heat conduction sheet, and the heat exchange part is connected to an external heat treatment device.
  • the heat exchange part includes a third installation part and a fourth installation part, and also includes a liquid cooling pipe.
  • the third installation part is attached to the insulating heat conduction sheet, and the third installation part is connected to the fourth installation part.
  • a second receiving groove is provided between the mounting parts to accommodate the liquid cooling pipe after the third mounting part and the fourth mounting part are fastened.
  • the insulating and thermally conductive sheet is an alumina ceramic sheet, a silicon nitride ceramic sheet, a zirconia ceramic sheet, a silicon carbide ceramic sheet, a magnesium oxide ceramic sheet, a boron nitride ceramic sheet, an aluminum nitride ceramic sheet, a beryllium oxide ceramic sheet.
  • the first mounting piece is an insulating mounting piece
  • the second mounting piece and the third mounting piece are metal mounting pieces
  • the fourth mounting piece is a metal mounting piece or an insulating mounting piece.
  • the metal mounting part is an aluminum alloy mounting part
  • the insulating and thermally conductive sheet is a silicon carbide ceramic sheet.
  • the insulating and heat-conducting sheet is clamped by the second mounting part and the third mounting part; and the second mounting part is embedded in the first mounting part and buckled, and the third mounting part is embedded in the
  • the fourth mounting part is internally fastened, and the first mounting part and the fourth mounting part are provided with fixing holes, so that the fixing bolts pass through the fourth mounting part and the first mounting part in sequence and are fixedly connected to the battery case.
  • the second mounting piece is embedded in the first mounting piece and fastened, and the first mounting piece, the third mounting piece and the fourth mounting piece are all provided with fixing holes, so that the fixing bolts penetrate the third mounting piece in sequence.
  • the fourth mounting piece, the third mounting piece and the first mounting piece are fixedly connected to the battery case.
  • the insulating and heat-conducting sheet is clamped by the second mounting part and the third mounting part, the second mounting part is embedded in the first mounting part and fastened, and the first mounting part and the third mounting part are
  • the first mounting part, the third mounting part and the fourth mounting part are provided with a set of second fixing holes, and a set of fixing bolts pass through the first fixing holes to secure the third
  • another set of fixing bolts are passed through the fourth mounting part, the third mounting part and the second fixing hole on the first mounting part in sequence and then connected to the battery.
  • the shell is fixedly connected.
  • first accommodation groove and the second accommodation groove are circular grooves or elliptical grooves, and the heat pipe is pressed in the first accommodation groove, and the first accommodation groove is configured There is a through hole, so that the heat pipe can pass through the through hole; the liquid cooling tube is pressed in the second accommodation groove, and the liquid cooling tube extends along the axial direction of the second accommodation groove to In addition to the third mounting piece and the fourth mounting piece.
  • the battery temperature control system includes a heat exchange unit and at least one heat pipe; the heat exchange unit includes a phase change box and a phase change material arranged in the phase change box; one end of the heat pipe is in contact with the battery pole, and the other end of the heat pipe is in contact with the battery pole. One end is inserted into the phase change material of the phase change box for heat exchange with the phase change material.
  • the temperature control unit also includes a temperature control unit connected to the heat pipe.
  • the temperature control unit and the heat exchange unit realize active temperature control and passive temperature control of the battery; the heat pipe realizes heat exchange with the phase change material of the phase change box, so that The pole is heated or cooled to achieve passive temperature control; after the temperature of the pole is greater than the phase change point temperature of the phase change material, the temperature control unit is turned on to cool the pole through the heat pipe, or the temperature The control unit heats the battery poles through the heat pipe, and the heating temperature of the temperature control unit is lower than the phase change point temperature of the phase change material, thereby achieving active temperature control.
  • the temperature control unit is one of a TEC semiconductor temperature controller or a liquid circulation pipe.
  • one end of the heat pipe inserted into the phase change box is provided with a heat pipe heat dissipation fin, and the heat pipe heat dissipation fin is provided with It is placed in the phase change material to increase the heat exchange area between the heat pipe and the phase change material.
  • internal heat dissipation fins are provided on the inner wall of the phase change box to increase the heat exchange area between the phase change material and the phase change box.
  • the inner heat dissipation fins and the heat pipe heat dissipation fins are embedded in each other to increase the heat exchange area of the heat pipe, phase change material and phase change box.
  • external heat dissipation fins are provided on the outer wall of the phase change box, and the external heat dissipation fins are used to quickly transfer the heat in the phase change box to the outside.
  • phase change point temperature of the phase change material is 30 to 52°C.
  • phase change material is one or more of polyols, fatty acids, crystalline hydrated salts, polybasic alloys, and alkanes.
  • temperature control unit and the phase change box are arranged at the same end of the heat pipe or at both ends of the heat pipe.
  • the portion of the heat pipe inserted into the phase change box is provided with a bending portion, and the bending portion is provided in the phase change material.
  • the battery temperature control system includes a heat exchange unit, a first heat pipe and a second heat pipe, and the first heat pipe and the second heat pipe are at least one;
  • the heat exchange unit includes a phase change box and a phase change box.
  • phase change material inside, or the heat exchange unit includes a plurality of heat dissipation fins;
  • the first heat pipe is a cored heat pipe, one end of which is in contact with the battery pole, and the other end is connected to the evaporation end of the second heat pipe.
  • the second heat pipe is a gravity heat pipe, and its condensation end is set in the phase change material of the phase change box, for transferring the heat of the battery to the phase change material, or more
  • a heat dissipation fin is arranged at the condensation end of the second heat pipe to dissipate the battery heat through convection.
  • a heat dissipation unit is included, and the heat dissipation unit includes at least one third heat pipe.
  • One end of the third heat pipe is inserted into the phase change material, and the other end is provided outside the phase change box for transferring heat in the phase change material. to outside the phase change box.
  • the portion of the third heat pipe located outside the phase change box is provided with heat dissipation fins for increasing the heat dissipation area.
  • the first heat pipe and the second heat pipe realize heat exchange through an insulating heat exchange device;
  • the insulating heat exchange device includes an insulating heat exchange plate, and the first heat pipe and the second heat pipe are arranged on both sides of the insulating heat exchange plate. side.
  • the insulating heat exchange plate is a thermally conductive ceramic plate.
  • One side of the thermally conductive ceramic plate is provided with a second pressure plate, and the other side of the thermally conductive ceramic plate is provided with a first pressure plate and a thermally conductive plate.
  • the first The heat pipe is arranged between the first pressure plate and the heat conductive plate, and the second heat pipe is arranged between the second pressure plate and the heat conductive ceramic plate.
  • a thermally conductive spacer is provided in the phase change box for quickly diffusing the heat transferred by the second heat pipe to the surroundings.
  • the thermally conductive spacer is one of a copper sheet, an aluminum sheet, and a carbon fiber sheet.
  • phase change box has a cylindrical structure, and the second heat pipe is arranged at the center of the phase change box.
  • This application also provides a large-capacity battery, including the above-mentioned battery temperature control system.
  • This application also provides a battery pack with a temperature control system, including a battery pack main body and a temperature control system.
  • the temperature control system includes a primary heat exchange tube and a secondary heat exchange tube.
  • the temperature control system also includes Heat exchange seat, the heat exchange seat is fixed on the top of the battery pack body; the primary heat exchange tube includes a first heat exchange part and a second heat exchange part connected to each other, the first heat exchange part is fixed on the battery pack
  • the second heat exchange component is fixed on the heat exchange seat; the secondary heat exchange tube is fixed on the heat exchange seat to achieve heat exchange with the second heat exchange component.
  • the heat exchange seat includes a heat exchange seat body.
  • the bottom and top of the heat exchange seat body are respectively provided with a first mounting part and a second mounting part; the first mounting part is used to fix the second heat exchanger.
  • the second mounting part is used to fix the secondary heat exchange tube.
  • the primary heat exchange tube is a heat pipe
  • the secondary heat exchange tube is a temperature control tube
  • the first installation part is a first through slot opened at the bottom of the heat exchange seat body, and a section of the heat pipe serves as The first heat exchange piece is fixed on the main body of the battery pack, and the other section is embedded in the first through slot as the second heat exchange piece
  • the second installation part is a second through slot opened on the top of the heat exchange base body, and the temperature control tube Embed in the second slot.
  • the heat pipe section as the first heat exchange member is fixedly connected to the poles of the battery pack body on which at least some of the single cells are located on the same side and have the same polarity; the heat pipe is insulated from the first channel or the temperature control tube.
  • the length direction of the battery pack body is defined as the x direction
  • the width direction of the battery pack body is defined as the y direction
  • the first-level heat exchange tubes are four heat pipes capable of conducting electricity; sections of two heat pipes serve as two first heat exchange parts, which are respectively fixedly connected to the positive poles of the battery pack body, and sections of the other two heat pipes serve as two first heat exchange parts.
  • first heat exchange members As two first heat exchange members, they are fixedly connected to the negative pole of the battery pack body respectively; the other section of the four heat pipes serves as four second heat exchange members, arranged along the x direction, extending in the y direction, and connected with the four first heat pipes.
  • the through slots correspond one to one and are embedded in the four first through slots.
  • the five second through-slots are arranged along the x-direction, and each first through-slot extends along the y-direction; the temperature control tubes are arranged in an S-shape or a loop-shape at the five second through-slots.
  • one end of the temperature control tube serves as the heat exchange medium inlet, and the other end serves as the heat exchange medium outlet.
  • cross-sections of the heat pipe and the temperature control pipe are both circular, and the cross-sections of the first through-slot and the second through-slot are both semi-circular.
  • the heat exchange seat also includes a temperature control tube pressure plate and/or a heat pipe support plate; the temperature control tube pressure plate is fixed on the top of the heat exchange seat body, and the heat pipe support plate is fixed on the bottom of the heat exchange seat body;
  • the bottom surface of the temperature control tube pressure plate is provided with a plurality of third through grooves extending in the y direction, arranged in the x direction, and corresponding to the second through grooves.
  • the third through grooves and the second through grooves are spliced to form a secondary exchanger.
  • Heat pipe accommodation cavity the top surface of the heat pipe support plate is provided with a plurality of fourth through slots extending in the y direction, arranged in the x direction, and corresponding to the first through slots, the fourth through slots and the first through slots
  • the second heat exchanger receiving cavity is formed by splicing.
  • the materials of the temperature control tube pressure plate and the heat pipe support plate are both insulating materials; the surfaces of the first through groove and/or the second through groove are provided with thermally conductive glue.
  • the heat exchange seat also includes a condensed water collection tray, which includes a tray body and a water outlet pipe arranged on the side wall of the tray body.
  • the tray body is located between the heat pipe support plate and the top of the battery pack body.
  • the water outlet pipe extends out of the side wall of the battery pack body.
  • This application also provides another battery pack with a temperature control system, which includes a battery pack main body and a temperature control system; the battery pack main body includes a plurality of batteries arranged in sequence; the temperature control system includes a heat treatment part and at least one transmission Thermal part; a part of the heat transfer part is arranged between adjacent batteries for heat exchange with the battery shell of the single battery, and the other part extends to the side of the battery pack main body where the battery pole is provided; the The heat treatment part is located on the side of the battery pack body where the battery poles are installed, and exchanges heat with the heat transfer part and the battery poles.
  • the above temperature control system can not only exchange heat with the battery casing through the heat transfer part and the heat treatment part, but also exchange heat with the battery poles, so that the temperature of the entire battery can be effectively controlled and avoid the battery temperature being too high or too low. performance and security issues.
  • the main body of the above-mentioned battery pack includes a plurality of batteries arranged in sequence, and has the characteristics of high space utilization, high integration, and high energy density. Highly integrated batteries will bulge and deform after high-temperature storage or during charging and discharging. The squeezing force caused by bulging and deformation can easily cause battery leakage, which can also cause safety hazards. At this time, corresponding pressure-bearing structures can be set up between adjacent batteries to suppress the deformation of the battery casing due to expansion. In this application, since a heat transfer part is provided between adjacent batteries, the heat transfer part can be The installation structure of the heat transfer part or the heat transfer part realizes the above pressure-bearing function, and can specifically include the following structural forms:
  • a groove is provided on the side wall of the battery case.
  • the two grooves of adjacent batteries form an installation cavity.
  • the heat transfer part is arranged in the installation cavity. In the direction of battery arrangement, the heat transfer part The size is larger than the size of the installation cavity, so that the heat transfer part can suppress the deformation of the battery case due to expansion;
  • the battery case is provided with an elongated member protruding from the side wall of the case.
  • the elongated members of adjacent batteries form a positioning installation groove, and the heat transfer part is arranged in the positioning installation groove; in the direction of battery arrangement, The size of the heat transfer part is larger than the size of the positioning installation groove, so that the heat transfer part can suppress the deformation of the battery case due to expansion;
  • the battery case is provided with an elongated member protruding from the side wall of the case.
  • the elongated members of adjacent batteries contact to form a positioning installation groove.
  • the heat transfer part is arranged in the positioning installation groove; in the battery arrangement direction , the size of the heat transfer part is smaller than the positioning The size of the slot.
  • the first structure and the second structure are preferably used.
  • the first structure and the second structure adopt a method of clamping the heat transfer part so that the heat transfer part is in close contact with the battery case, which is beneficial to The heat transfer part exchanges heat with the battery case.
  • the heat treatment part in the temperature control system of this application can use a variety of devices with heating and/or cooling functions. Considering the temperature control effect, it is preferable to use a heat exchange device with liquid heat transfer.
  • the heat exchange device has a rectangular box structure. There is a liquid medium circulation channel in the rectangular box, and the width of the rectangular box is greater than the distance between the positive and negative poles of the battery, so that the heat exchange device can communicate with the battery poles. Direct heat transfer is performed, and at the same time, insulation is implemented between the rectangular box and the positive and negative poles of each single cell.
  • a plurality of partitions are provided in the cavity of the heat exchange device, so that the liquid medium circulation channel of the heat exchange device is wavy.
  • the wavy cooling channel enables the liquid medium to flow to the cavity close to the pole to the maximum extent. Both sides of the body allow for better heat exchange with the battery poles.
  • a bending section is provided in the part extending from the heat transfer part to the battery pole. Heat is transferred between the bending section and the heat treatment part, and the bending section increases the heat transfer rate. The heat exchange area between the hot part and the heat treatment part.
  • the above-mentioned temperature control system and the battery pack main body can be assembled together.
  • the heat transfer part, the heat treatment part and the battery pack main body are assembled into one body through clamping components.
  • the clamping assembly includes a pressing plate and a backing plate; the backing plate is located below the bending section and is arranged between the positive pole and the negative pole of the battery; the pressing plate is located above the heat treatment part; the pressing plate is in contact with the battery case Directly fixed connection, or the pressure plate is fixedly connected to the battery case through a backing plate.
  • a positioning groove is provided on the end surface of the above-mentioned backing plate close to the heat treatment part, and the bent section is embedded in the positioning groove to reliably position and install the heat transfer part.
  • the above-mentioned heat transfer part preferably uses gravity heat pipes.
  • the evaporation end of the gravity heat pipe is in contact with the battery case to absorb heat, and the condensation end performs heat exchange with the heat treatment part.
  • the battery poles are generally at the top of the battery case, so that the gravity heat pipe is used in the vertical direction to optimize its heat conduction effect.
  • an insulating layer or an insulating pad is also provided on the contact surface between the heat treatment part, the heat transfer part and the battery pole.
  • the application also provides a battery case with a temperature control system, including a cylinder and a cover, and a temperature control system.
  • the temperature control system includes a temperature equalizing part and a thermal management part, and the temperature equalizing part is provided at the In the housing, the thermal management part is provided on the cover plate and extends through the cover plate into the housing.
  • the temperature equalization part includes a heat-absorbing material layer.
  • the heat-absorbing material layer fills the gap between the battery core assembly and the housing to absorb the excess heat in the housing. point of dissipated heat.
  • the heat-absorbing material layer is a phase change material layer.
  • phase change material layer is a paraffin composite material layer.
  • the thermal management part includes at least one of a liquid cooling pipe, a heat pipe, a heat exchanger, and a semiconductor refrigerator.
  • the thermal management part is provided on the cover plate and includes a heat pipe and a heat exchanger, wherein one end of the heat pipe is connected to the heat exchanger, and the other end is bent and extended into the housing.
  • the thermal management part further includes a liquid cooling tube, which is fixedly connected to the heat exchanger to perform heat exchange.
  • a heat pipe fixing groove is provided in the housing, the heat pipe fixing groove is provided along the length direction of the cylinder, and the heat pipe is embedded in the heat pipe fixing groove.
  • the thermal management part is also provided with a protective cover, which is provided on the heat exchanger; the heat exchanger is ceramic The heat exchanger is screwed to the cover plate.
  • the application also provides a heat exchange device for use in a battery temperature control system.
  • the heat exchange device includes an insulating heat exchange member for realizing heat exchange between a first heat transfer part and a second heat transfer part.
  • the third heat transfer part is One heat transfer part can conduct electricity; the insulating heat exchange part is an insulating heat exchange plate, and the first heat transfer part and the second heat transfer part are arranged on the same side of the insulating heat exchange plate or on both sides of the insulating heat exchange plate.
  • the insulating heat exchange member is an insulating heat exchange sleeve, and the first heat transfer part or the second heat transfer part is inserted into the central cavity of the insulating heat exchange sleeve, and the second heat transfer part or the first heat transfer part The part is arranged on the outer wall of the insulating heat exchange jacket.
  • the insulating heat exchange plate is a thermally conductive ceramic plate
  • the insulating heat exchange sleeve is a thermally conductive ceramic sleeve.
  • the thermally conductive ceramic plate is an alumina ceramic plate, a silicon nitride ceramic plate, a zirconia ceramic plate, a silicon carbide ceramic plate, a magnesium oxide ceramic plate, a boron nitride ceramic plate, an aluminum nitride ceramic plate, or a beryllium oxide ceramic plate.
  • the thermally conductive ceramic sleeve is an alumina ceramic sleeve, a silicon nitride ceramic sleeve, a zirconia ceramic sleeve, a silicon carbide ceramic sleeve, a magnesium oxide ceramic sleeve, a boron nitride ceramic sleeve, an aluminum nitride ceramic sleeve, an oxide One of the beryllium ceramic sleeves.
  • first pressure plate and/or a second pressure plate provided on both sides of the insulating heat exchange plate, and a first groove is provided on the first surface of the insulating heat exchange plate and/or the first pressure plate, so The first heat transfer part is provided in the first groove, the second surface of the insulating heat exchange plate and/or the second pressure plate is provided with a second groove, and the second heat transfer part is provided in the second In the groove, the first surface and the second surface are two opposite end surfaces of the insulating heat exchange plate.
  • a heat conduction plate is provided between the second pressure plate and the insulating heat exchange plate, and a second groove is provided on the heat conduction plate.
  • first groove and the second groove are semicircular grooves or arcuate grooves, and the first heat transfer part is extruded and deformed in the first groove to achieve close contact.
  • the second heat transfer part is extruded and deformed in the second groove to achieve close contact.
  • first heat transfer part is a heat pipe
  • second heat transfer part is a temperature control tube
  • the distance between the heat pipes and the temperature control tubes on both sides of the insulating heat exchange plate is set to the shortest, or the heat pipes and the temperature control tubes on both sides of the insulating heat exchange plate are staggered, and the heat pipes are located on two adjacent sides. between temperature control tubes.
  • the first heat transfer part is a heat pipe
  • the second heat transfer part is a temperature control tube
  • the temperature control tube is arranged on the outer wall of the insulating heat exchange jacket by winding.
  • a pressure sleeve is provided outside the temperature control tube for pressing the temperature control tube against the outer wall of the insulating heat exchange sleeve.
  • the application also provides a heat exchange device for a battery temperature control system.
  • the heat exchange device includes a heat exchange member, and the heat exchange member is used to realize heat exchange between a first heat transfer member and a second heat transfer member.
  • the first heat transfer member can conduct electricity;
  • the heat exchange member is provided with at least one first mounting part and at least one second mounting part;
  • the first mounting part is used to install the first heat transfer member, and the The second installation part is used to install a second heat transfer member.
  • the first heat transfer member is insulated from the heat exchange member, or the first heat transfer member is insulated from the second heat transfer member.
  • the device can be insulated. It can also transfer heat efficiently, so that the heat dissipation device that combines heat pipes and liquid cooling can be applied to the heat transfer of conductors.
  • the above-mentioned first and second installation parts can be of various structures, such as clamps, connecting straps, holes, grooves, etc., as long as the first and second heat transfer parts can be installed on the heat exchange part.
  • the above-mentioned first mounting part and the second mounting part are holes or slots.
  • the arrangement of the holes or slots can make the first heat transfer member and the second heat transfer member conveniently and reliably installed on the heat exchange member, and both The spacing during heat exchange is shorter and the heat exchange efficiency is higher.
  • the above-mentioned first mounting part and the second mounting part can both be configured as a through slot.
  • the first heat transfer member and the first heat transfer member are extruded and deformed in the through slot to achieve close contact with the heat exchange member.
  • the first heat transfer member and the second heat transfer member can be installed and disassembled conveniently on the heat exchange member.
  • the insulation between the first heat transfer member and the heat exchange member can be achieved in a variety of ways, for example, by providing an insulating pad, an insulating sleeve, an insulating coating, etc. between the first heat transfer member and the heat exchange member.
  • the insulating coating makes the heat exchange efficiency between the first heat transfer member and the heat exchange member higher, and the insulation sleeve makes the insulation between the first heat transfer member and the heat exchange member more reliable.
  • the cross section of the above-mentioned through groove is semicircular or arcuate.
  • the semicircular or arcuate shape is conducive to the first heat transfer member and the second heat transfer member being tightly clamped in the through groove, thereby realizing the first heat transfer member and the second heat transfer member.
  • the reliable installation and high performance of the second heat transfer part on the heat exchange part Efficient heat exchange.
  • the above-mentioned heat exchange element can be configured as a spliced structure.
  • the heat exchange element includes a first splicing piece and a second splicing piece that are connected, the first mounting part is provided on the first splicing piece, and the third splicing piece The two mounting parts are provided on the second splicing piece, and the first splicing piece or the second splicing piece is an insulating piece.
  • the above-mentioned heat exchange member includes a first splicing piece and a second splicing piece that are connected, the first mounting part is provided on the first splicing piece, and the second mounting part is provided on the second splicing piece.
  • an insulating coating or an insulating pad is provided on the contact surface of the first splicing piece and the second splicing piece.
  • This arrangement can respectively connect the first heat transfer element to the first splicing element, the second heat transfer element to the second splicing element, and finally realize the connection between the first splicing element and the second splicing element, so that the first heat transfer element can be connected to the first splicing element.
  • the installation of the heat transfer element and the second heat transfer element is more convenient, and it is convenient for on-site installation.
  • first splicing piece and the second splicing piece are connected through the matching of the protrusion and the groove.
  • the matching connection of the protrusion and the groove makes the installation and cooperation of the first splicing piece and the second splicing piece more convenient. Accurate and reliable.
  • first installation part and the second installation part are provided on the same side of the heat exchange member, which facilitates the installation and removal of the first heat transfer member and the second heat transfer member at the operation site.
  • the third heat transfer member The surfaces of the first mounting part and the second mounting part are coated with thermal conductive glue, which can increase the heat conduction effect.
  • a preferred method is to set the heat transfer distance between the first heat transfer member and the second heat transfer member to be the shortest.
  • the distance H between the center of the first mounting part and the center of the second mounting part is greater than the sum of the radii of the first heat transfer member and the second heat transfer member, and smaller than the sum of the radii of the first heat transfer member and the second heat transfer member. The sum of the diameters of the hot parts.
  • the battery temperature control system includes a heat conduction unit and a temperature control unit: the temperature of the battery is mainly concentrated on the poles. This application sets the heat pipe on the battery pole. When the battery temperature is too high, the heat pipe will The heat is exported in time, and the heat is transferred to the outside through the temperature control tube set outside the pole. At the same time, when the battery temperature is too low, the temperature control tube transfers the heat from the heat exchange device to the heat pipe, and the heat pipe transfers the heat to the battery pole. column, allowing the battery to run at optimal temperature.
  • the battery temperature control system includes a soaking plate, a first cold source, a heat source and N groups of heat pipes.
  • the temperature of the battery is mainly concentrated on the poles.
  • This application sets the core heat pipes on the battery poles.
  • the cored heat pipe will promptly export the heat from the pole, and the heat will be exchanged with the vapor chamber.
  • the vapor chamber will transfer the heat to the condensation end, and the cold source will cool the heat.
  • the temperature of the battery pack is too low, the vapor chamber will transfer the heat from the heat source to the core heat pipe, and the core heat pipe will transfer the heat to the battery poles, so that the battery can operate within the optimal temperature range.
  • the battery temperature control system has a simple structure, low cost, does not occupy the space inside the battery, and has good temperature control effect.
  • the battery temperature control system provided by this application includes an insulating thermal conductive sheet, which is used to realize heat exchange between the thermal conductive part and the heat exchange part.
  • the insulating thermal conductive sheet is made of non-conductive insulating material with good thermal conductivity and has a simple structure.
  • the temperature control system can achieve good heat exchange and insulation performance through a simple structure. At the same time, the device has low cost and high heat exchange efficiency.
  • the battery temperature control system provided by this application includes a heat exchange unit and a heat pipe.
  • the temperature of the battery is mainly concentrated on the pole.
  • This application sets the heat pipe on the battery pole. When the battery temperature is too high, the heat pipe will The heat is exported in time, and the heat exchanges with the phase change material in the phase change box, so that the battery runs at the optimal temperature.
  • the system of this application can increase or decrease the temperature through the heat pipe and the phase change material. This method has a higher heat conduction efficiency. High, simple structure and low cost.
  • the battery temperature control system includes a heat exchange unit, a temperature control unit and at least one heat pipe.
  • the temperature of the battery is mainly concentrated on the poles.
  • This application sets the heat pipe on the battery poles, and the temperature control unit is connected to the heat pipe.
  • the heat exchange unit and temperature control unit can perform active and passive temperature control on the battery.
  • the heat pipe and the phase change material in the phase change box realize heat exchange, causing the pole to increase or decrease in temperature;
  • the temperature control unit Turn on and cool the battery pole through the heat pipe; or, the temperature control unit cools the battery pole through the heat pipe.
  • the heating temperature of the temperature control unit is required to be lower than the phase change temperature of the phase change material, so that the battery can run at the optimal temperature. This method makes the temperature control cost smaller, the heat conduction efficiency is higher, and the energy is effectively saved.
  • the battery temperature control system provided by this application sets a core heat pipe on the battery pole.
  • the core heat pipe will promptly export the heat of the pole, and the heat will be exchanged with the second heat pipe.
  • the second heat pipe transfers heat to the phase change material or dissipates it through the heat dissipation fins, allowing the battery to run at the optimal temperature.
  • This heat dissipation method only requires the installation of heat pipes and phase change materials, without the need for active cooling devices, so there is no need to increase additional energy consumption, making the heat dissipation cost smaller, thereby effectively saving energy.
  • the battery cooling system has a simple structure, low cost, does not occupy the space inside the battery, and has good heat dissipation effect.
  • the heat exchange seat is placed on the top of the main body of the battery pack. This method greatly reduces the size of the battery pack along its length and has a high space utilization rate. , thus making the battery pack energy density higher.
  • the installation position of the primary heat exchange tube is set at the bottom of the heat exchange seat, and the installation position of the secondary heat exchange tube is set at the top of the heat exchange seat, which is convenient for When installing the primary heat exchange tube and the secondary heat exchange tube, first fix the primary heat exchange tube on the top of the battery pack body, and then place the heat exchange seat on the top of the battery pack body so that the primary heat exchange tube It is fixed on the heat exchange seat, so that the heat exchange seat is fixed on the top of the main body of the battery pack. Finally, the first-level heat exchange tube is fixed on the top of the heat exchange seat.
  • heat pipes and temperature control tubes are used as primary heat exchange tubes and secondary heat exchange tubes, and their corresponding installation parts are set as through-slots.
  • the installation method does not require additional fasteners. It only needs to process the through grooves arranged in a specific direction on the heat exchange seat, and the heat pipe or heat exchange tube can be embedded and fixed in the through groove. It has low processing cost and both heat pipe and temperature.
  • the installation stability of the control system is high.
  • the heat exchange seat is set on the top of the battery pack body. There is no need for the heat pipe to extend from both ends of the battery pack, which greatly shortens the length of the heat pipe, making the heat pipe easy to process, thereby reducing the cost of the battery. Group processing costs.
  • a conductive heat pipe is set on the battery pole.
  • the heat pipe will promptly export the heat from the pole, and the heat will be in contact with the heat exchange seat.
  • the temperature control tube realizes heat exchange to ensure that the battery runs at the optimal temperature.
  • a temperature control tube pressure plate is added on the top of the heat exchange seat to press the temperature control tube in the second channel, which can further ensure that the temperature control tube is in the second channel.
  • This application can also add a heat pipe support plate at the bottom of the heat exchange seat, which cooperates with the temperature control tube pressure plate to press the heat pipe in the first channel. At the same time, it can also further improve the tightness between the temperature control tube and the inner wall of the second channel. Further improve the heat transfer effect.
  • the installation stability of the heat pipe and the temperature control pipe can be further improved, and the replacement efficiency can also be improved. Thermal effect.
  • the temperature control system can not only process the heat of the battery body, but also process the heat of the battery poles.
  • the temperature control system can process the heat of the entire battery. in time Handling to avoid damage to the battery caused by the concentration of battery heat is of great significance to the safe and stable operation of the battery.
  • the same temperature control system is used to process the heat of the battery shell and the battery pole. Compared with the solution that uses multiple sets of temperature control systems, the same set of temperature control systems The temperature control system is not only easy to install and takes up little space, but it can also reduce temperature control costs.
  • This application provides a thermal management part and a temperature equalizing part at the same time in the battery casing to accurately control the temperature of different heating points inside the battery.
  • the thermal management part centrally cools the battery, and the temperature equalizing part keeps the temperature inside the battery balanced to avoid
  • the thermal management department controls the local temperature of the battery, resulting in uneven overall battery temperature and improving battery performance.
  • the structural design of this application is reasonable, no additional space is used, the space utilization rate is high, and the use effect is good.
  • the heat exchange device provided by this application includes an insulating heat exchange member for realizing heat exchange between the first heat transfer part and the second heat transfer part that are capable of conducting electricity.
  • the insulating heat exchange member specifically adopts non-conductive and heat conductive properties.
  • Better insulating heat exchange plates or insulating heat exchange sleeves have simple structures, so that the heat exchange device can achieve good heat exchange and insulation performance with a simple structure. At the same time, the cost of the device is relatively low. Low, heat exchange efficiency is high.
  • the heat exchange device provided by this application includes a heat exchange element, which can not only realize heat exchange between the first heat transfer element and the second heat transfer element, but also can conduct electricity when the first heat transfer element can conduct electricity. It can be allowed to be set on the battery pole to process the heat at the highest temperature point of the battery in a timely manner, thereby quickly and effectively processing the heat of the battery.
  • the device has a simple structure, so that the heat exchange device can achieve good heat exchange and insulation performance through a simple structure.
  • the device has low cost and high heat exchange efficiency.
  • FIG. 1 is a schematic structural diagram of the battery temperature control system in Embodiment 1 of the present application.
  • FIG. 2 is a schematic structural diagram 2 of the battery temperature control system in Embodiment 1 of the present application;
  • FIG. 3 is a schematic structural diagram of the heat exchange device in Embodiment 1 of the present application.
  • FIG. 4 is a schematic structural diagram 2 of the heat exchange device in Embodiment 1 of the present application.
  • Figure 5 is a schematic structural diagram of the large-capacity battery pack in Embodiment 2 of the present application.
  • Figure 6 is a schematic structural diagram 2 of the large-capacity battery pack in Embodiment 2 of the present application.
  • Figure 7 is a schematic diagram of the liquid inlet pipe and the liquid inlet pipe being arranged side by side in Example 2 of the application;
  • FIG 8 is a schematic diagram of the battery temperature control system in Embodiment 3 (the first cold source is a liquid cooling radiator);
  • FIG. 9 is a schematic diagram of the battery temperature control system (the first cold source is TEC) in Embodiment 3;
  • FIG. 10 is a schematic structural diagram of the battery temperature control system in Embodiment 3.
  • FIG 11 is a schematic structural diagram of the heat exchange device in Embodiment 3.
  • Figure 12 is a schematic diagram of the exploded structure of the heat exchange device in Embodiment 3.
  • Figure 13 is a schematic diagram of the cooperation between the phase change box and the heat dissipation fins of the heat plate in Embodiment 3;
  • Figure 14 is a schematic structural diagram of the phase change box in Embodiment 3.
  • Figure 15 is a schematic structural diagram of the large-capacity battery pack in Embodiment 3.
  • Figure 16 is a schematic structural diagram 2 of the large-capacity battery pack in Embodiment 3;
  • FIG 17 is a schematic structural diagram of the battery temperature control system in Embodiment 3.
  • Figure 18 is a schematic structural diagram 2 of the battery temperature control system in Embodiment 3.
  • FIG 19 is a schematic structural diagram of the temperature control system in Embodiment 4.
  • Figure 20 is a schematic diagram of the internal partial structure of the battery in Embodiment 4.
  • Figure 21 is a schematic cross-sectional structural diagram of the assembled temperature control system in Embodiment 4.
  • Figure 22 is a schematic structural diagram of the temperature control system after assembly in Embodiment 4.
  • FIG 23 is a schematic structural diagram of the energy storage device in Embodiment 4.
  • Figure 24 is a schematic structural diagram of the battery temperature control system in Embodiment 5.
  • Figure 25 is a schematic structural diagram 2 of the battery temperature control system in Embodiment 5;
  • Figure 26 is a schematic structural diagram three of the battery temperature control system in Embodiment 5.
  • Figure 27 is a schematic structural diagram of the large-capacity battery pack in Embodiment 5.
  • Figure 28 is a schematic structural diagram 2 of the large-capacity battery pack in Embodiment 5;
  • Figure 29 is a schematic diagram 1 of the cooperation between the battery temperature control system and the battery in Embodiment 6;
  • Figure 30 is a schematic structural diagram of the battery temperature control system in Embodiment 6;
  • Figure 31 is a schematic diagram 2 of the cooperation between the battery temperature control system and the battery in Embodiment 6;
  • Figure 32 is a schematic structural diagram 2 of the battery temperature control system in Embodiment 6;
  • Figure 33 is a schematic structural diagram three of the battery temperature control system in Embodiment 6;
  • Figure 34 is a schematic structural diagram of the insulation heat exchange device in Embodiment 6;
  • Figure 35 is a schematic structural diagram of two large-capacity batteries superposed and connected in series in Embodiment 6;
  • Figure 36 is a schematic structural diagram of the battery pack in Embodiment 7.
  • Figure 37 is a schematic structural diagram of the heat exchange seat body in Embodiment 7.
  • Figure 38 is a schematic structural diagram of the cooperation between the heat exchange seat body and the heat pipe in Embodiment 7;
  • Figure 39 is a schematic diagram of the heat pipe fixing method in Embodiment 7.
  • Figure 40 is a schematic structural diagram of the heat exchange seat, the temperature control tube and the heat pipe in Embodiment 7;
  • Figure 41 is a schematic structural diagram of the heat exchange seat in Embodiment 7.
  • Figure 42 is a schematic structural diagram of the temperature control tube pressure plate in Embodiment 7.
  • Figure 43 is a schematic structural diagram of the heat pipe support plate in Embodiment 7.
  • Figure 44 is a schematic structural diagram of the heat exchange seat in Embodiment 7, in which a condensed water collection tray is provided;
  • Figure 45 is a schematic diagram of the three-dimensional structure of the battery cluster in Example 8.
  • Figure 46 is a schematic structural diagram of the battery pack with a temperature control system in Embodiment 9;
  • Figure 47 is an exploded schematic diagram 1 of the battery pack with a temperature control system in Embodiment 9;
  • Figure 48 is a cross-sectional view of the battery pack with a temperature control system in Embodiment 9;
  • Figure 49 is a schematic structural diagram of the heat exchange device in Embodiment 9;
  • Figure 50 is a schematic structural diagram two of the battery pack with a temperature control system in Embodiment 9;
  • Figure 51 is an exploded schematic diagram two of the battery pack with a temperature control system in Embodiment 9;
  • Figure 52 is a schematic structural diagram of the large-capacity battery case in Embodiment 10.
  • Figure 53 is a schematic structural diagram of the temperature control system in Embodiment 10.
  • Figure 54 is a schematic structural diagram of the thermal management part in Embodiment 10.
  • Figure 55 is a schematic structural diagram of the thermal management part after installation in Embodiment 10.
  • Figure 56 is a schematic structural diagram of the heat exchange device in Embodiment 11.
  • Figure 57 is a schematic structural diagram of the heat exchange device in Embodiment 12.
  • Figure 58 is a schematic structural diagram of the heat exchange device in Embodiment 13;
  • Figure 59 is a schematic structural diagram of the heat exchange device in Embodiment 4.
  • Figure 60 is a schematic structural diagram 2 of the heat exchange device in Embodiment 14.
  • Figure 61 is a schematic structural diagram of the heat exchange device in Embodiment 15;
  • Figure 62 is a schematic structural diagram of the heat exchange device in Embodiment 16.
  • Figure 63 is a cross-sectional view of the heat exchange device in Embodiment 16.
  • Figure 64 is a schematic structural diagram of the heat exchange device in Embodiment 17.
  • Figure 65 is a schematic structural diagram 2 of the heat exchange device in Embodiment 17;
  • Figure 66 is a schematic structural diagram of the heat exchange device in Embodiment 18.
  • Figure 67 is a schematic structural diagram 2 of the heat exchange device in Embodiment 18.
  • Figure 68 is a schematic structural diagram of the heat exchange device in Embodiment 19;
  • Figure 69 is a schematic structural diagram of the heat exchange device in Embodiment 20;
  • Figure 70 is a schematic structural diagram of the heat exchange device in Embodiment 21;
  • Figure 71 is a schematic structural diagram of the heat exchange device in Embodiment 22;
  • Figure 72 is a schematic diagram of a plurality of first mounting parts in the heat exchange device in Embodiment 22;
  • Figure 73 is a schematic diagram of the cooperation between the heat exchange member and the first heat transfer member and the second heat transfer member in Embodiment 22;
  • the battery temperature control system includes a heat conduction unit 11 and a temperature control unit 12:
  • the heat conduction unit 11 includes at least one heat pipe 111.
  • One end of the heat pipe 111 is in contact with the pole 141, and the other end is in contact with the pole 141.
  • the temperature control unit 12 includes at least one temperature control tube, and the temperature control tube and the heat pipe 111 extending to the outside of the pole 141 achieve heat exchange through the heat exchange device 13.
  • the temperature of the battery is mainly concentrated on the pole 141.
  • the heat pipe 111 is set on the battery pole 141.
  • the heat pipe 111 When the battery temperature is too high, the heat pipe 111 will dissipate the heat of the pole 141 in time, and the heat will pass through the heat pipe provided on the outside of the pole 141.
  • the temperature control tube is transferred to the outside.
  • the temperature control tube transfers heat from the heat exchange device 13 to the heat pipe 111, and the heat pipe 111 transfers the heat to the battery pole 141, so that the battery runs at its best. temperature.
  • the battery temperature control system in this embodiment mainly adopts the heat transfer method of heat pipe + temperature control tube. This method has low energy consumption, high efficiency and high cost performance. Therefore, the heat pipe + temperature control tube method is most suitable for series-connected large battery packs. The temperature control method between columns, It is of great significance to the safe and stable operation of the battery.
  • the temperature control pipe in this embodiment can be a single piece or multiple pieces. If the temperature control pipe is a single piece, the single circulation pipeline is bent to form the liquid inlet pipe 121 and the liquid inlet pipe 121 arranged side by side.
  • the liquid return pipe 122, the liquid inlet pipe 121 and the liquid return pipe 122 arranged side by side and the heat pipe 111 realize heat exchange through the heat exchange device 13. That is to say, a single single-circulation pipe is bent along a certain point.
  • One part is the liquid inlet pipe 121, and the other part is the liquid return pipe 122. At this time, the liquid inlet pipe 121 and the liquid return pipe 122 are arranged side by side.
  • the multi-circulation pipelines are bent to form multiple liquid inlet pipes 121 and return pipes 122.
  • the liquid inlet pipe 121 of one of the circulation pipes is parallel to the liquid return pipe 122 of the other circulation pipe.
  • the liquid inlet pipe 121, the liquid return pipe 122 and the heat pipe 111 arranged side by side realize heat exchange through the heat exchange device 13.
  • the temperature control pipe includes a P circulation pipeline.
  • the P circulation pipeline is bent to form a P liquid inlet pipe 121 and a P liquid return pipe 122.
  • the liquid inlet pipe 121 of the mth circulation pipe is connected with the liquid inlet pipe 121 of the mth circulation pipe.
  • the liquid return pipes 122 of n circulation pipelines are arranged side by side.
  • the liquid inlet pipe 121 and the liquid return pipe 122 arranged side by side realize heat exchange with the heat pipe 111 through the heat exchange device 13.
  • P is an integer greater than or equal to 2
  • m and n are less than or equal to P, and m ⁇ n.
  • the temperature control pipe includes a first pipe and a second pipe.
  • the first pipe and the second pipe are bent to form two liquid inlet pipes 121 and liquid return pipes 122.
  • the first pipe and the second pipe are The flow direction of the internal medium is opposite.
  • the liquid return pipe 122 of the first pipeline and the liquid inlet pipe 121 of the second pipeline are arranged side by side.
  • the liquid inlet pipe 121 and the liquid return pipe 122 arranged side by side and the heat pipe 111 pass through the heat exchange device 13 Realize heat exchange.
  • the above-mentioned temperature control unit 12 also includes a temperature control device 123.
  • the temperature control device 123 is connected to the temperature control pipe to circulate the circulating medium in the temperature control pipe.
  • two temperature control pipes can be connected to one temperature control device 123, that is, the temperature control device 123 has two liquid inlets and two liquid outlets. At this time, the two temperature control pipes in the temperature control device 123 can cross.
  • two temperature control tubes may be connected to two temperature control devices 123, and the two temperature control devices 123 respectively circulate the circulating medium in the two temperature control tubes.
  • the above-mentioned circulating medium is a liquid medium, such as water, ethylene glycol/water (50:50V/V), propylene glycol/water (50/50V/V), methanol/water (40/60wt/wt), Ethanol/water (44/56wt/wt), calcium formate/water (40/60wt/wt), etc.
  • the temperature control system in this embodiment belongs to the temperature control method of heat pipe 111 + temperature control tube.
  • the heat pipe 111 extends from the battery pole 141, and the purpose is to dissipate the heat from the battery pole 141 and then cool it, or to External heat is transferred to the battery pole 141 through the heat pipe 111 .
  • the most direct way is to directly insert the extended heat pipe 111 into the cooling liquid for heat exchange.
  • this will lead to problems such as insulation and interface sealing of the casing, cooling liquid and heat pipe 111. Therefore, in this embodiment, the heat pipe is The protruding part of 111 adopts heat exchange device 13 for heat exchange, which has simple structure and low cost.
  • the heat exchange device 13 of this embodiment can be a device of different structural forms, as long as it can realize heat exchange between the heat pipe 111 and the temperature control pipe.
  • the heat pipe 111 is a conductive component, insulation between the heat pipe 111 and the temperature control tube needs to be achieved.
  • the specific structure of the heat exchange device 13 is detailed in Embodiment 11 to Embodiment 16.
  • the preferred structure of the heat exchange device 13 includes a thermally conductive ceramic plate.
  • the above-mentioned heat pipe 111, liquid inlet pipe 121 and liquid return pipe 122 can be arranged on the thermally conductive ceramic plate in different ways.
  • first pressure plates 132 and/or second pressure plates 133 can also be provided on both sides of the insulating heat exchange plate 131.
  • the first pressure plates 132 and /or a thermal conductive groove 136 is provided on the first surface of the insulating heat exchange plate 131, the heat pipe 111 is disposed in the thermal conductive groove 136, and a temperature control device is provided on the second pressing plate 133 and/or the second surface of the insulating heat exchange plate 131. Groove 135, the temperature control tube is arranged in the temperature control groove 135. More preferably, a heat conductive plate 134 is also provided between the second pressure plate 133 and the insulating heat exchange plate 131 .
  • the thermal conductive plate 134 may be a plate-shaped structure with good thermal conductivity, such as an aluminum plate, etc.
  • the large-capacity battery group 14 in this embodiment includes multiple large-capacity batteries 14 connected in series.
  • the multiple large-capacity batteries 14 are stacked to form a series-connected large-capacity battery group 14.
  • the upper cover 142 and lower cover of adjacent large-capacity batteries 14 Heat pipes 111 are arranged between the plates 143. At this time, the temperature control pipe can exchange heat with multiple heat pipes 111.
  • the existing technology In order to make the large-capacity battery 14 group run at a better temperature, it is necessary to ensure that the temperature of each large-capacity battery 14 is consistent. sex. In order to ensure the consistency of the temperature of each large-capacity battery 14, the existing technology generally uses parallel liquid cooling pipelines for cooling.
  • this embodiment provides a simple structure and low-cost solution to solve the problem of uneven heat dissipation among multiple poles 141 .
  • the heat pipes 111 of multiple batteries are exchanged with the same group of liquid inlet pipes 121 and liquid return pipes 122 arranged side by side. At this time, the heat exchange between the cells in each layer can be maintained uniformly.
  • This method has a simple structure and is not easy to use. Flow meters and throttle valves need to be installed in each pipeline to adjust the flow. Specifically, the entire temperature control loop adopts a single circulation pipeline or multiple circulation pipelines.
  • the single circulation pipeline or multiple circulation pipelines form a liquid inlet pipe 121 and a liquid return pipe 122 arranged side by side to connect multiple heat pipes 111 Heat exchange is performed with the liquid inlet pipe 121 and the liquid return pipe 122 arranged side by side in the same group.
  • the liquid inlet pipe 121 and the liquid return pipe 122 can be the liquid inlet pipe 121 and the liquid return pipe 122 of the same circulation pipeline, or they can be the liquid inlet pipe 121 and the liquid return pipe 122 of different circulation pipelines.
  • the liquid inlet pipe 121 and the liquid return pipe 122 are arranged side by side.
  • the heat pipe 111 between different series-connected batteries exchanges heat with the liquid inlet pipe 121 and the liquid return pipe 122 arranged side by side.
  • Multiple large-capacity batteries 14 The amount of heat exchange between the heat pipe 111 and the temperature control tube is the same, which can ensure the temperature uniformity of different large-capacity batteries 14.
  • Every two heat exchange surfaces exchange heat with one heat pipe 111, that is, the liquid inlet pipe 121 and return pipe 122 at the same height exchange heat with the heat pipe 111, and the first heat exchange surface and the 16th heat exchange surface absorb a total of The heat absorbed by the 2nd heat exchange surface and the 15th heat exchange surface is 2 ⁇ Q+15 ⁇ Q, and so on, to the 8th heat exchange surface and the 9th heat exchange surface.
  • the total heat absorbed by each heat exchange surface is 8 ⁇ Q+9 ⁇ Q.
  • the above heat exchange surface and the heat pipe 111 all exchange heat.
  • the heat of the liquid inlet pipe 121 and the liquid return pipe 122 that exchange heat with the heat pipe 111 is evenly balanced.
  • this embodiment provides a large-capacity battery pack, including a plurality of large-capacity batteries 14 connected in series and the above-mentioned battery temperature control system.
  • the upper cover 142 and the lower cover 143 of the large-capacity battery 14 are respectively the positive pole 141 and the negative pole 141.
  • Multiple large-capacity batteries 14 are stacked and arranged in series.
  • the heat pipe 111 is arranged on the positive pole of the adjacent large-capacity battery 14. between the pole and the negative pole. The heat pipe 111 is led out from the same side of the upper cover 142 and the lower cover 143 of the large-capacity battery 14.
  • the multiple heat pipes 111 exchange heat with the liquid inlet pipe 121 and the liquid return pipe 122 arranged side by side formed by a single circulation pipeline.
  • the plurality of heat pipes 111 exchange heat with the liquid inlet pipe 121 and the liquid return pipe 122 arranged side by side formed by different circulation pipes.
  • the above temperature control system is specifically applied to a group of 14 large-capacity batteries. At this time, the heat exchange between the heat pipe 111 and the temperature control tube between different large-capacity batteries 144 is the same, which can ensure the temperature of different large-capacity batteries 14 Uniformity, increasing the service life of large-capacity batteries 144.
  • the large-capacity battery 14 set provided in this embodiment includes multiple large-capacity batteries 14 and the above-mentioned temperature control system.
  • the heat pipes 111 between the positive pole 141 and the negative pole 141 of the adjacent large-capacity battery 14 can be one or more groups. If it is one group, that is, the length of the heat pipes 111 of the group is longer, and both ends extend out of the upper cover. 142. Both sides of the lower cover 143. At this time, side-by-side liquid inlet pipes 121 and liquid return pipes 122 are provided on both sides of the upper cover 142 and the lower cover 143. The two ends of the group of heat pipes 111 are respectively connected with the two sides.
  • the side-by-side liquid inlet pipe 121 and liquid return pipe 122 perform heat exchange.
  • the above-mentioned heat pipes 111 can also be in multiple groups, such as two groups.
  • the lengths of the two groups of heat pipes 111 are relatively short and are arranged sequentially along the length direction of the upper cover 142 and the lower cover 143.
  • the right end of one group of heat pipes 111 It is led out on the right side of the upper cover 142 and the lower cover 143, and the left end of the other set of heat pipes 111 is led out on the left side of the upper cover 142 and the lower cover 143. That is, the two sets of heat pipes 111 extend out of the upper cover 142 and the lower cover 143 respectively.
  • both sides of the lower cover 143 there are two circulation pipelines for exchanging heat with the two sets of heat pipes 111.
  • Both sides of the upper cover 142 and the lower cover 143 are provided with side-by-side liquid inlet pipes 121 and return pipes.
  • the liquid pipe 122 performs heat exchange with the two groups of heat pipes 111 respectively. That is to say, the parts of the two sets of heat pipes 111 extending to the outside of the pole 141 are arranged on different sides of the upper cover 142 and the lower cover 143.
  • One group of heat pipes 111 exchanges heat with the same group of liquid inlet pipes 121 and 122 on one side, and the other group of heat pipes 111 exchanges heat with the other side and the same group of liquid inlet pipes 121 and liquid return pipes 122 , thereby performing heat exchange on the heat pipes 111 on both sides of the large-capacity battery 14, so that the large-capacity battery 14 runs at an optimal temperature.
  • This embodiment provides a large-capacity battery 14, including the above-mentioned battery temperature control system; a jack is provided on the pole 141 of the large-capacity battery 14, and the heat pipe 111 is inserted into the jack; or, the pole 141 side of the large-capacity battery 14 An installation groove is provided on the wall, and the heat pipe 111 is arranged in the installation groove.
  • the temperature control system controls the temperature of the large-capacity battery 14 so that it operates within an optimal temperature.
  • the battery temperature control system of this embodiment includes a vapor chamber 21, a first cold source 22, a heat source 23 and N groups of heat pipes.
  • Each group of heat pipes includes at least one cored heat pipe 24, and N is greater than or equal to An integer of 2, each group of heat pipes includes at least one cored heat pipe 24, and the vapor chamber 21 is a gravity type heat pipe; one end of the N group of heat pipes is in contact with the poles of the N batteries respectively, and the other end of the N group of heat pipes is in contact with the vapor chamber 21 connection to achieve heat exchange with the vapor chamber 21.
  • the above-mentioned first cold source 22 is disposed at the condensation end of the vapor chamber 21 for actively cooling the battery pack.
  • the heat source 23 is disposed on the vapor chamber 21.
  • the heat source 23 may be disposed at the evaporation end of the vapor chamber 21 or It is arranged at a position of the vapor chamber 21 close to the cored heat pipe 24 to achieve active warming of the battery pack.
  • the temperature of the battery is mainly concentrated on the poles.
  • the cored heat pipe 24 is arranged on the battery poles.
  • the cored heat pipe 24 will dissipate the heat of the poles in time, and the heat will interact with the vapor chamber. 21 realizes heat exchange.
  • the above-mentioned vapor chamber 21 is a gravity type heat pipe, and its heat transfer is directional, that is, the heat can only be transferred from bottom to upward.
  • the vapor chamber 21 brings the heat to the first cold source 22.
  • Source 22 cools this heat so that external heat is not transferred into the battery through the condensation end.
  • the vapor chamber 21 brings the heat from the heat source 23 to the cored heat pipe 24, and the cored heat pipe 24 transfers the heat to the inside of the battery, causing the battery temperature to rise to the set temperature, thereby allowing the battery to work at its optimal temperature. within the optimal temperature range.
  • the other components are arranged outside the battery. It has the characteristics of simple structure, low cost, and does not occupy the space inside the battery.
  • the combination of the vapor chamber 21, the first cold source 22 and the heat source 23 has a better temperature control effect.
  • the sintered copper powder in the core heat pipe 24 has strong capillary action, so the placement direction of the core heat pipe 24 can be horizontal, vertical, or inclined, without affecting the heat transfer of the core heat pipe 24 . If the cored heat pipe 24 is used alone to transfer heat, when the outside temperature is too high, the high temperature from the outside can be transmitted to the battery through the cored heat pipe 24, thereby increasing the heat inside the battery.
  • the inside of the vapor chamber 21 is an aluminum groove or porous mesh structure with a thermally conductive phase change medium inside.
  • the battery temperature control system in this embodiment uses the vapor chamber 21 to realize directional heat transfer. The medium of the vapor chamber 21 transfers heat through gravity. When used vertically, the external high temperature cannot be transmitted to the inside of the battery.
  • the cored heat pipe 24 and the vapor chamber 21 are used together, the effect of cooling can be achieved while preventing external heat from being transferred to the inside of the battery.
  • the core heat pipe 24 transfers the heat inside the battery to the heat exchange surface, and the vapor chamber 21 brings the heat to the first cold source 22 to cool the heat.
  • the vapor chamber 21 brings the heat from the heat source 23 to the heat exchange surface, and the cored heat pipe 24 transfers the heat to the inside of the battery, so that the battery operates within the optimal temperature range.
  • the battery temperature control system further includes a second cold source 25 .
  • the second cold source 25 is also provided at the condensation end of the vapor chamber 21 to achieve passive cooling of the battery pack.
  • the second cooling source 25 can be a heat dissipation tooth 29 , which is provided at the condensation end of the vapor chamber 21 .
  • the heat dissipation tooth 29 can also be equipped with a fan, and the fan can further heat the vapor chamber 21 Perform heat exchange.
  • the second cold source 25 may also include a phase change box 251 and a phase change material disposed in the phase change box 251 . The condensation end of the vapor chamber 21 is inserted into the phase change material of the phase change box 251 .
  • the battery pack is placed in the box 28.
  • the first cold source 22 and the second cold source 25 can be placed inside the box 28 or outside the box 28. Preferably, they are placed outside the box 28. This arrangement enables the second cold source 25 to exchange heat with the external environment and make full use of the temperature of the external environment, thereby saving the start-up time of active cooling and saving energy.
  • the above-mentioned second cold source 25 cooperates with the first cold source 22 to achieve active cooling and passive cooling of the battery pack.
  • the heat is directionally transmitted to the phase change material through the core heat pipe 24 and the vapor chamber 21.
  • the vapor chamber 21 is in contact with the phase change material.
  • the material realizes heat exchange, and the phase change material realizes passive cooling of the battery pack.
  • the second cold source 25 is turned on at this time, and the poles are opposed through the core heat pipe 24 and the vapor chamber 21
  • the column is actively cooled.
  • the system uses the first cold source 22 and the second cold source 25 to perform combined active and passive heat dissipation on the battery pack.
  • This method can ensure that the heat of the battery can be effectively released, and at the same time, the temperature control cost is small and can It effectively saves energy and avoids the waste of energy when only the active cold source (first cold source 22) is used, and also avoids the defect that the battery temperature cannot be controlled in time when only the passive cold source (second cold source 25) is used.
  • the cored heat pipe 24 is arranged on the battery pole.
  • the cored heat pipe 24 and the phase change material of the phase change box 251 realize heat exchange, so that the pole is passively cooled; the phase in the phase change box 251
  • active cooling begins.
  • the second cold source 25 is turned on to actively cool the pole.
  • the vapor chamber 21 brings the heat from the heat source 23 to the cored heat pipe 24, and the cored heat pipe 24 transfers the heat to the inside of the battery, causing the battery temperature to rise to the set temperature, thereby allowing the battery to work at its optimal temperature. within the optimal temperature range.
  • the heating temperature of the heat source 23 can be lower than the phase change point temperature of the phase change material to prevent the heat of the temperature control unit from being transferred into the phase change material.
  • the first cold source 22 and the heat source 23 can cool or heat multiple batteries at the same time.
  • the above-mentioned first cold source 22 and heat source 23 can have various forms of structures, as long as they can provide cooling and heating functions.
  • the first cold source 22 can be one of a TEC semiconductor refrigerator, a liquid circulation pipeline, a liquid cooling radiator, and a fan
  • the heat source 23 can be one of a TEC semiconductor refrigerator, a heating wire, a heating plate, and a liquid circulation pipeline. kind.
  • the first cold source 22 and the heat source 23 are both liquid cooling radiators.
  • the circulating liquid in the upper liquid cooling radiator is cooling water
  • the circulating liquid in the lower liquid cooling radiator is high temperature water.
  • the first cold source 222 is a TEC semiconductor refrigerator
  • the heat source 23 is a heating plate.
  • the TEC semiconductor refrigerator is set at both ends of the vapor chamber 21 through brackets or mounting plates; alternatively, the vapor chamber 21 is inserted into the hollow cavity of the liquid cooling radiator or directly connected to the liquid cooling radiator through welding or adhesive glue. This enables heat exchange with the liquid in the liquid cooling radiator.
  • the liquid circulation pipeline is wrapped around the outer wall of the vapor chamber 21, or the liquid circulation pipeline is welded and glued to the vapor chamber 21, thereby realizing heat exchange with the liquid circulation pipeline; or, the fan is connected through a bracket or
  • the installation plate is arranged at the condensation end of the vapor chamber 21, and the heating wire and heating sheet are wound and bonded to the evaporation end of the vapor chamber 21.
  • the part of the vapor chamber 21 inserted into the phase change box 251 in this embodiment can be linear, that is, the vapor chamber 21 is not bent and is directly inserted into the phase change material. At this time, the vapor chamber 21 is inserted into the phase change material.
  • Plate 21 has the best heat transfer effect.
  • a heat plate radiating fin 252 can also be provided at one end of the vapor chamber 21 inserted into the phase change box 251. The heat plate radiating fin 252 is placed in the phase change material for increasing heat uniformity. The heat exchange area between the plate 21 and the phase change material improves the heat exchange efficiency between the vapor chamber 21 and the phase change material.
  • inner heat dissipation fins 253 can also be provided on the inner wall of the phase change box 251, and part or all of the inner heat dissipation fins 253 are set in the phase change material.
  • the inner heat dissipation fins 253 and the heat plate heat dissipation fins 252 are in mutual contact with each other.
  • the embedded combination increases the heat exchange area of the vapor chamber 21, the phase change material and the phase change box 251. This arrangement greatly improves the heat exchange efficiency between the core heat pipe 24 and the phase change material. This setting greatly improves the heat exchange efficiency between the core heat pipe 24 and the phase change material, and the temperature control effect is high.
  • external heat dissipation fins 254 can also be provided on the outer wall of the phase change box 251.
  • the external heat dissipation fins 254 are used to quickly transfer the heat in the phase change box 251 to the outside, so as to further increase the heat dissipation effect.
  • the phase change point temperature of the phase change material in the phase change box 251 in this embodiment is 30-52°C, and more preferably, the temperature is 35-42°C.
  • the phase change material can specifically be polyols (tetradecanol, neopentyl glycol, pentaerythritol, etc.), fatty acids (lauric acid, myristic acid, palmitic acid, etc.
  • phase change material absorbs or releases heat during the phase change process, and exchanges the heat generated by the battery with the outside, making up for the shortcomings of sensible heat storage that cannot preserve heat for a long time, and no chemical reaction occurs, and it will not cause any harm to the ecological environment. harm.
  • the core heat pipe 24 and the vapor chamber 21 are exchanged through the heat exchange device 26.
  • This method has a simple structure and low cost.
  • the heat exchange efficiency of the hot plate 21 is relatively high.
  • the heat exchange device 26 of the embodiment can be a device of different structural forms, as long as it can realize heat exchange between the core heat pipe 24 and the vapor chamber 21 . If the core heat pipe 24 is a conductive component, insulation between the core heat pipe 24 and the heat chamber 21 needs to be achieved.
  • the above-mentioned heat exchange device 26 includes a first pressure plate 261, an insulating heat exchange plate 262 and a second pressure plate 263 arranged in sequence.
  • the core heat pipe 24 is arranged on the first pressure plate 261, and the uniform heat plate 21 is arranged on the third pressure plate 261.
  • the insulating heat exchange plate 262 is a thermally conductive ceramic plate.
  • the thermally conductive ceramic plate can be an alumina ceramic plate, a silicon nitride ceramic plate, a zirconia ceramic plate, a silicon carbide ceramic plate, a magnesium oxide ceramic plate, or a boron nitride ceramic plate.
  • This embodiment uses a thermally conductive ceramic plate to achieve heat transfer.
  • the thermally conductive ceramic plate has excellent thermal conductivity and good insulation properties at the same time, so that the heat exchange device 26 has good thermal conductivity and insulation properties while also having a structural structure. Advantages of simplicity, smaller size and mass.
  • a groove can also be provided on the first pressure plate 261, and the cored heat pipe 24 is disposed in the groove.
  • the shape of the above-mentioned groove can be various.
  • the above-mentioned groove is a semicircular groove or an arcuate groove, and the core heat pipe 24 is extruded and deformed in the groove, so that the core heat pipe 24 is close to the thermally conductive ceramic plate.
  • One side is extruded into a flat surface so that it is in close contact with the insulating heat exchange plate 262 to achieve good heat exchange and stable installation.
  • the first pressure plate 261 and the second pressure plate 263 can be made of insulating materials, such as plastic. Press plate, pp press plate, pe press plate, nylon press plate, PC press plate, ceramic press plate, resin press plate, etc.
  • the battery temperature control system in this embodiment mainly adopts the heat transfer method of heat pipe + vapor chamber 21 + cold source/heat source 23. This method has low energy consumption, high efficiency and high cost performance, so this method is most suitable for series-connected large batteries.
  • the temperature control method between the battery poles is of great significance to the safe and stable operation of the battery.
  • the temperature control system can heat the battery when the battery temperature is too low, and the heating temperature is lower than the phase change point of the phase change material. When the battery temperature is too high, the heat of the battery can be introduced into the phase change material through the cored heat pipe 24 . Since the phase change material has a very high latent heat of phase change, it can completely absorb the heat generated by the battery.
  • the first cold source 22 When the phase change material is completely melted, the first cold source 22 is activated, which can further cool the battery so that the battery operates within an optimal temperature range. Since the heating temperature of the heat source 23 is lower than the phase change point of the phase change material, the phase change material does not undergo a phase change and basically does not absorb the heat of the heat source 23 .
  • the battery pack is placed inside the box 28, and the second cold source 25 is placed outside the box 28, that is, the phase change box 251 is placed outside the box 28.
  • the phase change box 251 is placed outside the box 28.
  • the condensation end of the vapor chamber 21 is extended to the outer wall of the box 28, and the part extending to the outside of the box 28 is provided with heat dissipation teeth. 29. The heat is quickly transferred to the environment through the heat dissipation teeth 29, and the temperature of the external environment is also fully utilized.
  • This embodiment also provides a large-capacity battery pack, including a plurality of large-capacity batteries 27 and the above-mentioned battery temperature control system; the poles of the large-capacity batteries 27 are provided with jacks, and a plurality of cored heat pipes 24 are respectively inserted into multiple
  • the temperature control of multiple large-capacity batteries 27 is implemented in the pole jacks of the large-capacity batteries 27 .
  • the battery temperature control system controls the temperatures of multiple large-capacity batteries 27 so that they operate within an optimal temperature.
  • the large-capacity battery 27 group includes a plurality of large-capacity batteries 27 connected in parallel. The temperature of the battery is mainly concentrated on the poles.
  • the cored heat pipe 24 is arranged on the battery poles.
  • the cored heat pipe 24 is The heat pipe 24 conducts heat from the pole in time, and the heat exchanges with the vapor chamber 21.
  • the vapor chamber 21 is a gravity heat pipe, and its heat transfer is directional, that is, the heat can only be transferred from bottom to upward. 21 brings the heat to the first cold source 22, and the first cold source cools the heat. At this time, the external heat will not be transferred to the battery through the condensation end.
  • the vapor chamber 21 brings the heat from the heat source 23 to the cored heat pipe 24, and the cored heat pipe 24 transfers the heat to the inside of the battery, causing the battery temperature to rise to the set temperature, thereby allowing the battery to work at its optimal temperature. within the optimal temperature range.
  • the battery temperature control system has a simple structure, does not occupy the space inside the battery, and has good temperature control effect.
  • the temperature control system 3100 includes a heat conduction part 31 and a heat exchange part 32.
  • An insulating heat conduction sheet is provided between the heat conduction part 31 and the heat exchange part 32.
  • the thermal conductive part 31 includes a first mounting part 311, a second mounting part 312 and a heat pipe 313.
  • the first mounting part 311 is fixedly arranged outside the battery shell, and the heat pipe 313 passes through the battery case.
  • the pool shell extends into the battery shell, and a first receiving groove 314 is provided between the first mounting part 311 and the second mounting part 312 to accommodate the heat pipe 313 after the first mounting part 311 and the second mounting part 312 are fastened;
  • the heat exchange part 32 and the heat conduction part 31 perform heat exchange through the insulating heat conduction sheet 33 .
  • the first mounting component 311 is preferably a thermally conductive ceramic sheet, which has good thermal conductivity and insulation properties
  • the second mounting component 312 is a metal mounting component, which has good thermal conductivity and electrical conductivity properties. Replace with other materials with better thermal conductivity.
  • the shapes of the first mounting member 311 and the second mounting member 312 are rectangular, or can be elliptical, circular or trapezoidal, and the mounting surface does not need to be a flat surface, and can also be a curved surface, as long as the heat pipe 313 can be fixed to the battery case. Just go up.
  • the first receiving groove 314 is provided on the middle seam after the first mounting part 311 and the second mounting part 312 are assembled. The first receiving groove 314 should fit as closely as possible to the heat pipe 313 to fully conduct heat from the heat pipe 313 to the second mounting part. 312 to further conduct the heat to the insulating heat conductive sheet 33.
  • the first receiving groove 314 is provided with a through hole, so that the heat pipe 313 passes through the through hole, passes through the battery case 3200, and enters the inside of the battery.
  • the first accommodating groove 314 and the second accommodating groove 324 are semicircular grooves or arcuate grooves.
  • the first accommodating groove 314 is provided with a through hole so that the heat pipe 313 can pass through the through hole.
  • the heat pipe 313 is inside the first accommodating groove 314 Close contact; the liquid cooling pipe 323 is in close contact within the second receiving groove 324, and the liquid cooling pipe 323 extends along the axial direction of the second receiving groove 324 to the outside of the third mounting member 321 and the fourth mounting member 322.
  • the heat exchange part 32 includes a third mounting part 321 , a fourth mounting part 322 and a liquid cooling pipe 323 .
  • the third mounting part 321 is arranged close to the insulating heat conduction sheet 33 .
  • the third mounting part 321 is connected to the fourth mounting part 321 .
  • the member 322 is provided with a second receiving groove 324 to receive the liquid cooling pipe 323 after the third mounting member 321 and the fourth mounting member 322 are fastened.
  • the liquid cooling tube can also be replaced with other cooling devices, such as a semiconductor refrigerator.
  • the shapes of the third mounting member 321 and the fourth mounting member 322 are rectangular, or can be oval, circular or trapezoidal, and the mounting surface does not need to be a flat surface, and can also be a curved surface, as long as the liquid cooling pipe 323 can be fixed to the battery. Just install it on the casing.
  • the second accommodating groove 324 is provided on the middle seam after the third mounting part 321 and the fourth mounting part 322 are assembled. The second accommodating groove 324 should be as close as possible to the liquid cooling pipe 323 to fully conduct the heat of the liquid cooling pipe 323 to the third mounting part 323 .
  • the external heat treatment device connected by the liquid cooling pipe 323 is Heat is processed.
  • the second receiving groove 324 should also pass through the third mounting part 321 and the fourth mounting part 322 along its own axial direction, so that the liquid cooling pipe 323 can extend out of the third mounting part 321 and the fourth mounting part 322 and interact with other large components. Connect the liquid cooling tube of the capacity battery.
  • the first mounting part 311 , the second mounting part 312 , the third mounting part 321 and the fourth mounting part 322 can be spliced and installed in a variety of different ways.
  • the insulating and heat-conducting sheet 33 is mounted by a second mounting part.
  • the second mounting part 312 and the third mounting part 321 are clamped; and the second mounting part 312 is embedded in the first mounting part 311 and fastened, the third mounting part 321 is embedded in the fourth mounting part 322 and fastened, and the first mounting part 311 and the fourth
  • the mounting part 322 is provided with a fixing hole 315, so that the fixing bolts pass through the fixing holes 315 on the fourth mounting part 322 and the first mounting part 311 in sequence and then are fixedly connected to the battery case; or the second mounting part 312 is embedded in the first mounting part.
  • the first mounting part 311, the third mounting part 321 and the fourth mounting part 322 are all provided with fixing holes, so that the fixing bolts penetrate the fourth mounting part 322, the third mounting part 321 and the first mounting part in sequence.
  • the fixing hole of the component 311 is fixedly connected to the battery case; or the second mounting component 312 is embedded in the first mounting component 311 and fastened, and both the first mounting component 311 and the third mounting component 321 are provided with a set of first fixing holes 3261 , the first mounting part 311, the third mounting part 321 and the fourth mounting part 322 are all provided with a set of second fixing holes 3262, and a set of fixing bolts 3271 pass through the first fixing holes 3261 to secure the third mounting part 321 and the first mounting part 326.
  • the insulating thermal conductive sheet 33 is an alumina ceramic plate, a silicon nitride ceramic plate, a zirconia ceramic plate, a silicon carbide ceramic plate, a magnesium oxide ceramic plate, a boron nitride ceramic plate, an aluminum nitride ceramic plate, or an oxide ceramic plate.
  • the first mounting part 311 is an insulating mounting part, which can be applied regardless of whether the battery case is made of metal or insulating material.
  • the second mounting part 312 is a metal mounting part, which is beneficial to thermal and electrical conductivity.
  • the third mounting part is The component 321 is a metal mounting component, which is beneficial to heat conduction; the fourth mounting component 322 is a metal mounting component or an insulating mounting component, and its material itself has no clear requirements for heat conduction and insulation.
  • the metal mounting part is preferably an aluminum alloy mounting part.
  • FIG 20 and Figure 22 it is a partial structural diagram of a large-capacity battery.
  • the large-capacity battery includes a casing 200. and temperature control system 3100.
  • the temperature control system 3100 is provided on the battery cover 3201.
  • the temperature control system 3100 includes at least two sets of heat conduction parts 31 and a set of heat exchange parts 32, and the two sets of heat conduction parts 31 are in insulating contact, and the heat pipes 313 of the heat conduction part 31 are respectively in contact with each other.
  • the positive pole 3202 and the negative pole 3203 of the battery are in contact to conduct the heat emitted by the positive pole 201 and the negative pole 202 to the heat exchange part 32 .
  • the liquid cooling tube 323 of the heat exchange part 32 dissipates the heat of the battery pole through an external heat treatment device.
  • FIG 23 it is an energy storage system including several large-capacity batteries.
  • the liquid cooling tubes 323 in the heat exchange parts 32 of multiple large-capacity batteries are designed in an integrated manner.
  • the battery temperature control system includes a heat exchange unit and at least one heat pipe 42; the heat exchange unit includes a phase change box 41 and a phase change box 41.
  • the temperature of the battery is mainly concentrated on the pole 43.
  • the heat pipe 42 is arranged on the battery pole 43. When the battery temperature is too high, the heat pipe 42 will dissipate the heat of the pole 43 in time, and the heat will interact with the phase change box 41.
  • the phase change material inside realizes heat exchange. The phase change material absorbs or releases heat during the phase change process, and exchanges the heat generated by the battery with the outside, so that the battery runs at the optimal temperature.
  • this embodiment also provides another battery temperature control system, including a heat exchange unit, a temperature control unit 44 and at least one heat pipe 42;
  • the heat exchange unit includes a phase change box 41 and is arranged in the phase change box 41 phase change material; one end of the heat pipe 42 is in contact with the battery pole 43, and the other end is inserted into the phase change material of the phase change box 41.
  • the temperature control unit 44 is connected to the heat pipe 42 to realize active temperature control or passive temperature control of the battery.
  • the temperature of the battery is mainly concentrated on the pole 43.
  • the heat pipe 42 is arranged on the battery pole 43.
  • the heat pipe 42 realizes heat exchange with the phase change material of the phase change box 41, so that the pole 43 heats up or cools down.
  • Passive temperature control during passive temperature control, the heat pipe 42 conducts heat from the pole 43 in time, and the heat exchanges with the phase change material in the phase change box 41.
  • Phase change materials absorb or release heat during the phase change process, exchanging heat generated by the battery with the outside, allowing the battery to run at the optimal temperature.
  • active temperature control is performed.
  • the temperature control unit 44 is turned on, and the heat pipe 42 controls the pole. column 43 to cool down; or, when the battery temperature is too low, the temperature control unit 44 heats the battery pole 43 through the heat pipe 42 so that the battery runs at the optimal temperature.
  • the heating temperature of the temperature control unit 44 is required to be lower than the corresponding temperature.
  • the phase change temperature of the material is changed to prevent the heat of the temperature control unit 44 from being transferred into the phase change material.
  • the above-mentioned temperature control unit 44 can be of various forms of structure, as long as it can provide cooling and heating functions.
  • the temperature control unit 44 can be at least one of a TEC semiconductor temperature controller or a liquid circulation pipe.
  • the temperature control unit 44 can be arranged at the same end of the heat pipe 42 as the phase change box 41 or at both ends of the heat pipe 42 according to requirements.
  • the TEC semiconductor temperature controller is directly connected to the heat pipe 42. If the heat pipe 42 is a conductor, an insulation layer is required between the heat pipe 42 and the TEC semiconductor temperature controller.
  • the liquid circulation pipeline can be a combination device of a chiller and an aluminum tube. The chiller heats or cools the medium in the aluminum tube, and then performs heat exchange between the aluminum tube and the heat pipe 42. If the heat pipe 42 is a conductor, both are required at this time.
  • An insulating and thermally conductive device such as a thermally conductive ceramic plate, is installed between them.
  • the part where the heat pipe 42 is inserted into the phase change box 41 can have a straight structure, that is, the heat pipe 42 is not bent, but directly passes through the side plate of the phase change box 41 and is inserted into the phase change material.
  • the heat pipe 42 has the best heat transfer effect. If the heat pipe 42 is a conductor, the heat pipe 42 can be insulated from the side plate of the phase change box 41 , for example, with insulating glue or an insulating coating.
  • the heat pipe 42 can also be provided with a bending portion 48 according to requirements.
  • the bending portion 48 is arranged in the phase change material. This arrangement can reduce the installation space of the phase change box 41. Specifically, it can be according to Actual requirements settings.
  • a heat pipe cooling fin can also be provided at one end of the heat pipe 42 inserted into the phase change box 41. The heat pipe cooling fins are placed in the phase change material to increase the heat exchange area between the heat pipe 42 and the phase change material. This results in a certain improvement in the heat exchange efficiency between the heat pipe 42 and the phase change material.
  • Inner heat dissipation fins can also be provided on the inner wall of the phase change box 41, and part or all of the inner heat dissipation fins are set in the phase change material.
  • the inner heat dissipation fins and the heat pipe heat dissipation fins are embedded in each other, increasing the number of heat pipes. 42.
  • you can also External heat dissipation fins are provided on the outer wall of the phase change box 41, and the external heat dissipation fins are used to quickly transfer the heat in the phase change box 41 to the outside, further increasing the heat dissipation effect. Refer to Embodiment 2 for the specific arrangements of the inner heat dissipation fins, heat pipe heat dissipation fins and outer heat dissipation fins in the phase change box 41 .
  • the phase change point temperature of the phase change material in the phase change box 41 of this embodiment is 30-52°C. More preferably, the temperature is 35-42°C.
  • the phase change material can be polyol (tetradecanol). , neopentyl glycol, pentaerythritol, etc.), fatty acids (lauric acid, myristic acid, palmitic acid, etc.
  • phase change material absorbs or releases heat during the phase change process, and exchanges the heat generated by the battery with the outside, making up for the shortcomings of sensible heat storage that cannot preserve heat for a long time, and no chemical reaction occurs, and it will not cause any harm to the ecological environment. harm.
  • This embodiment also provides a large-capacity battery, including the above-mentioned battery temperature control system.
  • the poles 43 of the large-capacity battery 49 are provided with jacks, and the heat pipes 42 are inserted into the jacks; or, the poles 43 of the large-capacity battery 49 are inserted into the jacks.
  • a mounting groove is provided on the side wall, and the heat pipe 42 is disposed in the mounting groove.
  • the temperature control system controls the temperature of the large-capacity battery 49 so that it operates within an optimal temperature.
  • the battery temperature control system includes a temperature control unit 44, a heat pipe 42 provided on the surface of the pole 43 or inside the pole 43, and a phase change material.
  • the phase change material is installed in the phase change box 41, and the heat pipe 42 is inserted into the phase change box 41. 42 is connected to the heat pipe cooling fins, and the heat pipe cooling fins are placed in the phase change material to facilitate rapid heat exchange with the phase change material.
  • a temperature control unit 44 is provided at the same end or the other end of the phase change box 41 , and the temperature control unit 44 is connected to the heat pipe 42 . The temperature control unit 44 can heat the battery when the battery temperature is too low, and the heating temperature is lower than the phase change point of the phase change material.
  • the heat of the battery can be introduced into the phase change material through the heat pipe 42 . Since the phase change material has a very high latent heat of phase change, it can completely absorb the heat generated by the battery. When the phase change material is completely melted, the refrigeration function of the temperature control unit 44 is activated, which can further cool the battery so that the battery operates within an optimal range. Since the heating temperature of the heat exchange unit is lower than the phase change point of the phase change material, the phase change material will not undergo phase change and basically does not absorb the heat of the heating unit.
  • the heat exchange unit can be a TEC semiconductor temperature controller, a liquid pipeline or Other heating and refrigeration equipment.
  • this embodiment also provides a large-capacity battery 49 group, including a plurality of large-capacity batteries 49 connected in series and the above-mentioned battery temperature control system; the upper cover 410 and the lower cover of the large-capacity battery 49
  • the plates 411 are positive poles 43 and negative poles 43 respectively.
  • Multiple large-capacity batteries 49 are stacked.
  • the heat pipe 42 is arranged between the upper cover 410 and the lower cover 411 of the adjacent large-capacity batteries 49.
  • the heat pipe 42 is arranged on the upper cover. between the plate 410 and the lower cover plate 411. Specifically, at least one groove is provided on the upper cover 410 and the lower cover 411 of the large-capacity battery 49.
  • Adjacent large-capacity batteries 49 are stacked so that the two grooves form an installation cavity.
  • the heat pipe 42 is provided in the installation cavity. inside the cavity.
  • the temperature control system controls the temperature of the large-capacity battery 49 so that it operates within an optimal temperature.
  • the temperature control unit 44 can be arranged at the same end of the heat pipe 42 as the phase change box 41 or at both ends of the heat pipe 42 according to requirements.
  • the pool temperature control system includes a heat pipe 42 and a phase change material arranged between the upper cover 410 and the lower cover 411 of adjacent large-capacity batteries 49. The phase change material is installed in the phase change box 41, and the heat pipe 42 is inserted into the phase change box.
  • the heat pipes 42 are connected to the heat pipe cooling fins, and the heat pipe cooling fins are placed in the phase change material to facilitate rapid heat exchange with the phase change material.
  • a temperature control unit 44 is provided at the same end or the other end of the phase change box 41 , and the temperature control unit 44 is connected to the heat pipe 42 .
  • the battery temperature control system includes a heat exchange unit 51, a first heat pipe 52 and a second heat pipe 53.
  • the first heat pipe 52 and the second heat pipe There is at least one second heat pipe 53;
  • the heat exchange unit 51 includes a phase change box 511 and a phase change material disposed in the phase change box 511, or the heat exchange unit 51 includes a plurality of heat dissipation fins 510;
  • the first heat pipe 52 has a core.
  • the heat pipe is in contact with the battery pole 55, and the other end is connected with the evaporation end of the second heat pipe 53, for transferring the heat of the battery to the second heat pipe 53;
  • the second heat pipe 53 is a gravity heat pipe, and its condensation end is set in the opposite direction.
  • the phase change material of the transformer box 511 is used to transfer the heat of the battery to the phase change material.
  • a plurality of heat dissipation fins 510 are provided at the condensation end of the second heat pipe 53 to dissipate the battery heat through convection.
  • the battery temperature control system is a one-way heat dissipation device.
  • the heat distributed between the battery poles 55 is stored in the phase change material through the first heat pipe 52 and the second heat pipe 53 or dissipated through the heat dissipation fins 510 to achieve The heat of the battery pole 55 is collected or the heat of the pole is dissipated.
  • the temperature of the battery is mainly concentrated on the poles.
  • a cored heat pipe is arranged on the battery poles 55.
  • the cored heat pipe will dissipate the heat of the poles in a timely manner, and the heat is combined with the second heat pipe 53
  • the second heat pipe 53 is a gravity heat pipe, and its heat transfer is directional, that is, the heat can only be transferred from bottom to top.
  • the second heat pipe 53 brings the heat to the heat exchange unit 51, and the heat exchange unit 51 will This heat is cooled, and at this time the external heat will not be transferred to the battery through the condensation end.
  • the sintered copper powder in the cored heat pipe has strong capillary action, so the placement direction of the cored heat pipe can be horizontal, vertical or inclined, without affecting the heat transfer of the cored heat pipe.
  • the core heat pipe is used alone to transfer heat, when the outside temperature is too high, the high temperature from the outside can be transmitted to the battery through the core heat pipe, causing the heat inside the battery to increase.
  • the system of this embodiment uses the second heat pipe 53 to achieve directional transfer of heat.
  • the medium of the second heat pipe 53 transfers heat through gravity. When used vertically, the external high temperature cannot be transmitted to the inside of the battery. Therefore, when the cored heat pipe and the second heat pipe 53 are used together, the effect of cooling can be achieved while preventing external heat from being transferred to the inside of the battery.
  • the condensation end of the second heat pipe 53 is higher than the evaporation end.
  • the evaporation end can effectively transfer heat to the phase change material at the condensation end, and is absorbed by the phase change material.
  • the phase change material continuously absorbs the heat transferred by the second heat pipe 53 before the complete phase change, so that the temperature of the condensation end of the second heat pipe 53 is lower than the phase change temperature of the phase change material, thereby maintaining the temperature of the battery pole 55 at the phase change temperature of the phase change material.
  • the battery temperature control system of this embodiment only needs to install heat pipes and phase change materials, and does not need to install an active cooling device.
  • this battery temperature control system except for the core heat pipe which is arranged inside the battery, the other components are arranged outside the battery. It has the characteristics of simple structure, low cost and does not occupy the space inside the battery.
  • the above-mentioned phase change box 511 has a cylindrical structure, and the second heat pipe 53 is arranged at the center of the phase change box 511. This arrangement can transfer the heat of the second heat pipe 53 to the phase evenly and quickly. Dissipate heat in different materials.
  • the phase change material has the characteristic of low thermal conductivity.
  • the phase change box 511 is designed in a cylindrical shape, and the second heat pipe 53 conducts heat from the center. Able to spread evenly around.
  • a thermally conductive spacer 58 with a high thermal conductivity can also be provided in the circular phase change box 511, so that the heat can be quickly diffused to the surroundings.
  • the thermally conductive spacer 58 is one of a copper sheet, an aluminum sheet, and a carbon fiber sheet.
  • the battery temperature control system in this embodiment is also provided with a heat dissipation unit.
  • the heat dissipation unit includes at least one third heat pipe 54, and one end of the third heat pipe 54 is inserted into Inside the phase change material, the other end is provided outside the phase change box 511 for transferring the heat in the phase change material to the outside.
  • the third heat pipe 54 is provided with heat dissipation fins 56 on the outside of the phase change box 511 to increase the heat dissipation area and quickly dissipate heat through the heat dissipation fins 56 .
  • the heat dissipation unit enables the phase change box 511 to exchange heat with the external environment and make full use of the temperature of the external environment.
  • the above-mentioned phase change box 511 is provided with a thermal insulation sheet 58 for quickly diffusing the heat transferred by the second heat pipe 53 to the surroundings.
  • the thermally conductive spacer 58 is one of a copper sheet, an aluminum sheet, and a carbon fiber sheet.
  • the above-mentioned phase change box 511 has a cylindrical structure, and the second heat pipe 53 is arranged at the center of the phase change box 511. This arrangement can evenly and quickly transfer the heat of the second heat pipe 53 to the phase change material for heat dissipation.
  • the phase change point temperature of the phase change material in the phase change box 511 in this embodiment is 30-52°C. More preferably, the temperature is 35-42°C.
  • the phase change material can specifically be polyols (tetradecanol, neopentyl glycol, pentaerythritol, etc.), fatty acids (lauric acid, myristic acid, palmitic acid, etc.
  • phase change material absorbs or releases heat during the phase change process, and exchanges the heat generated by the battery with the outside, making up for the shortcomings of sensible heat storage that cannot preserve heat for a long time, and no chemical reaction occurs, and it will not cause any harm to the ecological environment. harm.
  • the first heat pipe 52 and the second heat pipe 53 realize heat exchange through the insulating heat exchange device 57.
  • the insulation heat exchange device 57 can be a device of different structural forms, as long as the heat exchange between the first heat pipe 52 and the second heat pipe 53 can be achieved. If the first heat pipe 52 is a conductive member, insulation between the first heat pipe 52 and the second heat pipe 53 needs to be achieved.
  • the above-mentioned insulating heat exchange device 57 may specifically include an insulating heat exchange plate.
  • the first heat pipe 52 and the second heat pipe 53 are disposed on both sides of the insulating heat exchange plate.
  • the insulating heat exchange plate may specifically be a thermally conductive ceramic plate 571.
  • the thermally conductive ceramic plate 571 A first pressure plate 572 and a heat conduction plate 574 are provided on one side of the heat conductive ceramic plate 571 and a second pressure plate 573 is provided on the other side of the heat conduction ceramic plate 571.
  • the first heat pipe 52 is provided between the first pressure plate 572 and the heat conduction plate 574.
  • the second heat pipe 53 It is provided between the second pressure plate 573 and the thermally conductive ceramic plate 571 .
  • the thermally conductive ceramic plate 571 can be an alumina ceramic plate, a silicon nitride ceramic plate, a zirconia ceramic plate, a silicon carbide ceramic plate, a magnesium oxide ceramic plate, a boron nitride ceramic plate, an aluminum nitride ceramic plate, or a beryllium oxide ceramic plate. one of them.
  • a thermally conductive ceramic plate 571 is used to realize heat transfer between the first heat pipe 52 and the second heat pipe 53. While the thermally conductive ceramic plate 571 has excellent heat conduction efficiency, it also has good insulation performance, so that the insulating heat exchange device 57 can While having good thermal conductivity and insulation properties, it also has the advantages of simple structure, low cost, small volume and mass.
  • a groove can also be provided on the first pressure plate 572, and the cored heat pipe is disposed in the groove.
  • the shape of the above-mentioned groove can be various.
  • the above-mentioned groove is a semicircular groove or an arcuate groove, and the core heat pipe is extruded and deformed in the groove, so that the core heat pipe is close to the thermally conductive ceramic plate 571 One side is extruded into a flat surface so that it is in close contact with the insulating heat exchange plate to achieve good heat exchange and stable installation.
  • the first pressure plate 572 and the second pressure plate 573 can be made of insulating materials, such as plastic pressure plates, pp pressure plate, pe pressure plate, nylon pressure plate, PC pressure plate, ceramic pressure plate, resin pressure plate, etc.
  • This embodiment also provides a large-capacity battery pack, including a plurality of large-capacity batteries 59 and the above-mentioned battery temperature control system; the poles of the large-capacity batteries 59 are provided with jacks, and the plurality of first heat pipes 52 are respectively inserted into multiple large-capacity batteries.
  • the temperature control of multiple large-capacity batteries 59 is implemented in the pole jacks of the capacity batteries 59 .
  • the battery temperature control system controls the temperatures of multiple large-capacity batteries 59 so that they operate within an optimal temperature.
  • the temperature of the battery is mainly concentrated on the poles.
  • a cored heat pipe is arranged on the battery poles 55.
  • the second heat pipe 53 is a gravity heat pipe, and its heat transfer is directional, that is, the heat can only be transferred from bottom to top.
  • the second heat pipe 53 brings the heat to the heat exchange unit 51, and the heat exchange unit 51 transfers the heat.
  • Heat cooling at this time the external heat will not be transferred to the battery through the condensation end.
  • the battery temperature control system has a simple structure, does not occupy the space inside the battery, and has good temperature control effect.
  • this embodiment also provides another large-capacity battery pack, including multiple large-capacity batteries 59 connected in series and the above-mentioned battery temperature control system;
  • the large-capacity battery 59 includes a battery box 593, battery cells,
  • the upper cover 591 and the lower cover 592 are respectively the positive pole and the negative pole of the large-capacity battery 59.
  • the positive pole and the negative pole are arranged at the open ends on both sides of the battery box 593.
  • a closed cavity is formed, which is used to install and place multiple battery cells and their accessories.
  • the multiple battery cells are connected in parallel to form a large-capacity battery 59 to meet usage requirements in different fields.
  • the positive electrode tabs of multiple battery cells and the upper cover 591 are electrically connected through conductive bars or conductive sheets, and the negative electrode tabs of the battery cells and the lower cover 592 are also electrically connected through conductive bars or conductive sheets.
  • the battery cells The current is drawn out through the tabs, and the current is transmitted to the upper cover plate 591 and the lower cover plate 592 through the conductive row or conductive sheet, and is finally drawn out through the upper cover plate 591 and the lower cover plate 592.
  • the multiple large-capacity batteries 59 When multiple large-capacity batteries 59 are connected in series, the multiple large-capacity batteries 59 are superimposed.
  • One end of the multiple core heat pipes is arranged between the upper cover 591 and the lower cover 592 of the adjacent large-capacity batteries 59, and the other ends are connected to The second heat pipe 53 is connected.
  • grooves are provided on the upper cover 591 and the lower cover 592 of the large-capacity battery 59, and the adjacent large-capacity batteries 59 are stacked so that the two grooves form an installation cavity 595, and the cored heat pipe is arranged in the installation cavity.
  • the cored heat pipe between the multiple large-capacity batteries 59 extends to the same side of the positive and negative poles, and performs heat exchange with the second heat pipe 53 provided on the same side of the positive and negative poles, or multiple large-capacity batteries 59
  • the two ends of the cored heat pipe in between extend to both sides of the positive pole and the negative pole respectively.
  • Second heat pipes 53 are provided on both sides of the positive pole and the negative pole, respectively connected with the second heat pipes 53 on both sides of the positive pole and negative pole. Perform heat exchange.
  • the large-capacity battery pack in this embodiment mainly adopts the heat transfer method of heat pipe + phase change material.
  • This method has low energy consumption and high efficiency. High, cost-effective, so this method is the most suitable temperature control method between the poles of large series-connected battery packs, and is of great significance to the safe and stable operation of the battery.
  • the battery temperature is too high, the heat of the battery can be introduced into the phase change material through the cored heat pipe. Since the phase change material has a very high latent heat of phase change, it can completely absorb the heat generated by the battery, allowing the battery to operate within the optimal temperature range.
  • the battery pack of this embodiment includes a battery pack main body 61, a heat exchange seat 62, a primary heat exchange tube 602 and a secondary heat exchange tube 64.
  • the heat exchange seat 62 is fixed on the top of the battery pack body.
  • the heat pipe 602 and the secondary heat exchange pipe 64 realize heat exchange in the heat exchange seat 62 .
  • the heat exchange seat 62 can use a heat exchange plate or heat exchange sleeve with good thermal conductivity.
  • the heat exchange plate or heat exchange sleeve can be a device of different structural forms, as long as the primary heat exchange tube 602 and the secondary heat exchange can be realized.
  • the heat exchange of the heat pipe 64 is sufficient.
  • the primary heat exchange tube 602 can be divided into two parts according to different installation positions, which can be defined as the first heat exchange member 631 and the second heat exchange member 632 (see Figure 38).
  • the heat exchanger 631 and the second heat exchanger 632 are connected to each other and can be integrated or separated.
  • the first heat exchanger 631 is fixed on the battery pack body 61 and the second heat exchanger 632 is fixed on the heat exchange seat. 62 on.
  • the secondary heat exchange tube 64 is fixed on the heat exchange seat 62 to achieve heat exchange with the second heat exchange member 632 .
  • the second heat exchange member 632 and the secondary heat exchange tube 64 can be fixed to the heat exchange base 62 by clamping, bonding, and nesting methods.
  • the heat exchange seat 62 is arranged on the top of the battery pack main body 61, which greatly reduces the size of the battery pack along its length direction (x direction), improves space utilization, and thereby increases the energy density of the battery pack.
  • the heat exchange seat 62 in this embodiment includes a heat exchange seat body 620. As shown in Figure 37, it has a structure similar to a heat exchange plate. The bottom and top of the heat exchange plate are respectively provided for fixing the second heat exchange member 632 and the second stage. The first mounting part and the second mounting part of the heat exchange tube 64. That is to say, in this embodiment, the second heat exchange member 632 and the secondary heat exchange tube 64 are located on two opposite surfaces of the heat exchange seat body 620. Through such an arrangement, it is convenient for the primary heat exchange tube 602 and the secondary heat exchange tube 602 to Installation of the heat exchange tube 64 and the heat exchange seat body 620.
  • the first heat exchange member 631 can be fixed on the battery pack body 61 first, then the second heat exchange member 632 can be fixed on the bottom of the heat exchange seat 620, and finally the secondary heat exchange tube 64 can be fixed on the battery pack body 620.
  • the first mounting part and the second mounting part may also be provided on the left and right sides of the heat exchange plate.
  • this embodiment requires a larger size of the heat exchange plate along the height direction of the battery pack, which results in a larger volume of the entire battery pack and lowers the energy density.
  • the first mounting part and the second mounting part can also be arranged on the top or bottom of the heat exchange seat body 620.
  • the first mounting part and the second mounting part can be located on the same surface of the heat exchange seat body 620.
  • the first mounting part and the second mounting part may be arranged alternately.
  • this embodiment requires the size of the heat exchange plate along the length of the battery pack to be larger, which still results in a larger volume of the entire battery pack and lowers the energy density.
  • the heat exchange seat body 620 can also adopt the structure of a heat exchange sleeve.
  • the second heat exchange member 632 can be inserted into the central cavity of the heat exchange sleeve, and the secondary heat exchange tube 64 is disposed in the heat exchange sleeve.
  • the secondary heat exchange tube 64 can be inserted into the central cavity of the heat exchanger sleeve, and the second heat exchanger 632 can be arranged on the outer wall of the heat exchanger sleeve.
  • the second heat exchanger tube 632 can also be inserted into the central cavity of the heat exchanger sleeve. Both the member 632 and the secondary heat exchange tube 64 can be arranged on the outer wall of the heat exchange jacket.
  • the primary heat exchange tube 602 is a heat pipe
  • the secondary heat exchange tube 64 is a temperature control tube
  • the temperature control tube refers to a pipe that can pass the heat exchange medium inside, such as an aluminum pipe, a copper pipe, etc. , both ends of the temperature control tube are connected to an external temperature control device. Based on the temperature control device, the temperature of the heat exchange medium in the temperature control tube is controlled.
  • the temperature control tube and the heat pipe perform heat exchange to make the battery pack work normally.
  • gravity heat exhaust, aluminum tubes, etc. can also be used as the primary heat exchange tube 602.
  • a section of the heat pipe serves as the first heat exchange member 631 and is fixed on the battery pack main body 61. It can be directly fixed on the top 1 of the battery pack main body, or it can be fixed on the pole as shown in Figure 36. When fixed on the pole, it is necessary to The heat pipe is insulated from the temperature control tube; the other section of the heat pipe is used as the second heat exchange part 632 and is fixed on the first installation part.
  • the first installation part is the first through slot 621 opened at the bottom of the heat exchange seat 620.
  • the heat pipe is embedded in the first through groove 621 as a section of the second heat exchange member 632.
  • the second installation part is a second through groove 622 opened on the top of the heat exchange base body 620.
  • the temperature control tube is embedded in the second through groove 622.
  • the radius of the first through groove 621 can preferably meet the following requirements: the second heat exchange member 632 can be embedded in the first through groove 621, so that the second heat exchange member 632 is in close contact with the inner wall of the first through groove 621; second The radius of the through groove 622 can preferably meet the following requirements: the temperature control tube can be embedded in the second through groove 622 so that the temperature control tube is in close contact with the inner wall of the second through groove 622.
  • the first installation part and the second installation part are designed in the form of through slots, which can better fix the heat pipe or temperature control tube, and at the same time increase the size of the heat pipe and the first through slot 621, the temperature control pipe and the second through slot.
  • the contact area between 622 increases the heat exchange area, which can effectively realize heat exchange.
  • the processing of opening a through-slot is more convenient than adding other additional mounting parts.
  • the first mounting part and the second mounting part may be snap rings and clamps fixed on the bottom and top of the heat exchange seat body 620 respectively, and the heat pipe and the temperature control tube are fixed on the heat exchanger base body 620 through the snap rings and clamps.
  • the installation method of the heat exchange seat body 620 is more complicated, and the contact area between the heat pipe, the temperature control tube and the heat exchange seat body 620 is small, and the heat exchange effect is poor.
  • thermal conductive glue can also be applied to the bottom and top of the heat exchange seat 620, and the heat pipe and the temperature control tube can be fixed to the heat exchange seat 620 by bonding.
  • this fixing method has poor stability. Poor, but this fixing method can be combined with the fixing method of this embodiment.
  • thermal conductive glue can be applied in the first through groove 621 and/or the second through groove 622 of this embodiment to further enhance the heat pipe and temperature control. The stability of the tube in the first channel 621 and the second channel 622.
  • this embodiment uses a heat pipe as the primary heat exchange tube 602.
  • the heat pipe section as the first heat exchange member 631 is fixedly connected to the poles of the battery pack body 61;
  • the heat pipe section of the heat component 632 is fixed in the first through groove 621 and is insulated from the first through groove 621 or the temperature control tube.
  • This can be achieved by using an insulating heat exchange seat 620, such as the heat exchange seat 620 A thermally conductive ceramic plate can be used.
  • the thermally conductive ceramic plate can specifically be an alumina ceramic plate, a silicon nitride ceramic plate, a zirconia ceramic plate, a silicon carbide ceramic plate, a magnesium oxide ceramic plate, a boron nitride ceramic plate, or an aluminum nitride ceramic plate. , one of beryllium oxide ceramics. In other embodiments, this can also be achieved by adding an insulating layer in the first through groove 621 or the second through groove 622 .
  • the heat pipe is arranged on the battery poles. When the battery temperature is too high, the heat pipe will dissipate the heat between the poles, and the heat will be transferred to the outside air or external equipment through the temperature control tube arranged on the heat exchange base body 620. At the same time, when the battery temperature is too low, the temperature control tube transfers heat from the heat exchange base body 620 to the heat pipe, and the heat pipe transfers the heat to the battery poles, so that the battery runs at the optimal temperature.
  • this embodiment uses four conductive heat pipes of substantially equal length.
  • the four heat pipes can be defined as a first heat pipe 6301, a second heat pipe 6302, a third heat pipe 6303 and a fourth heat pipe respectively.
  • Heat pipe 6304 in which a section of the first heat pipe 6301 and the second heat pipe 6302 serve as two first heat exchange members 631, which are respectively fixedly connected to the positive pole of the battery pack body 61, and a section of the third heat pipe 6303 and the fourth heat pipe 6304 serve as two first heat exchange members 631.
  • the first heat exchange members 631 are respectively fixedly connected to the negative poles of the battery pack body 61; the first heat pipe 6301, the second heat pipe 6302, the third heat pipe 6303 and the other section of the fourth heat pipe 6304 serve as four second heat exchange members.
  • 632 arranged along the x-direction and extending in the y-direction, is located at the top of the battery pack main body 61; in order to adapt to the four second heat exchange parts 632, this embodiment is provided with four second heat exchange parts 632 at the bottom of the heat exchange seat body 620.
  • One through-slot 621 four first through-slots 621 are arranged along the x-direction, each first through-slot 621 extends along the y-direction, four second heat exchange members 632 correspond to the four first through-slots 621 one by one, and are embedded in Within the four first through slots 621, see Figure 38.
  • By arranging four heat pipes and arranging the heat exchange seat body 620 in the middle of the battery pack body 61 it can be ensured that the number of poles corresponding to each heat pipe is equal, thereby achieving an even distribution for all square batteries in the battery pack body 61. Thermal effect.
  • the length of a single heat pipe can be shortened and the difficulty of processing the heat pipe is reduced.
  • the temperature control tube in this embodiment is a whole tube, arranged in a zigzag shape in five second through grooves 622, and each second A section of temperature control tube is fixed in the slot, and both ends of the temperature control tube serve as the outlet and inlet of the heat exchange medium.
  • an S-shaped arrangement can also be used, and five temperature control tubes can also be used, which are arranged in the five second slots 622 one by one. Both ends of each temperature control tube are used for heat exchange medium. Exits and entrances.
  • the number of heat pipes, first through-slots 621 and second through-slots 622 can be set according to actual needs.
  • two heat pipes can be selected as the first-level heat exchange tube 602.
  • the first through-channel can be
  • the groove 621 and the second through-slot 622 can also be two, in which a section of one heat pipe is fixed on part of the positive pole, a section of the other heat pipe is fixed on part of the negative pole, and the other section of the two heat pipes serves as the second heat pipe.
  • the heat exchange elements 632 are respectively arranged in the two first through grooves 621.
  • a heat pipe can be selected as the primary heat exchange tube 602.
  • first through-slot 621 There can be one first through-slot 621 and two second through-slots 622.
  • the first through-slot 621 can be located between the two second through-slots 621.
  • a section of the heat pipe serves as the first heat exchange member 631. It is fixed on part of the positive electrode column or part of the negative electrode column, and the other section is provided as the second heat exchange member 632 in the first through groove 621.
  • the second heat exchange member 632 can be located between the two sections of temperature control tubes.
  • the heat exchange member 632 can perform better heat exchange with the two sections of temperature control tubes.
  • six heat pipes can also be used.
  • There are six first through slots 621 four of which are consistent with the installation method of this embodiment.
  • the other two can be directly fixed on the top of the battery pack body, forming six second heat exchange members. 632 are embedded in the first through slot 621 in one-to-one correspondence.
  • the extending direction of the first through-slot 621 may be in the same direction as the first heat exchange member 631, and the extending direction of the second through-slot 622 is not limited, and may be the same as or different from the first through-slot 621;
  • the number of the first through grooves 621 may be two, and the number of the second through grooves 622 is not limited. That is to say, the two first through-slots 621 can extend along the The middle section connected to the poles, as the second heat exchange member 632, can be directly embedded in the two first through grooves 621 to achieve heat exchange with the temperature control tube embedded in the second through groove 622.
  • the length of the heat pipe is also required, making the heat pipe difficult to process.
  • Four heat pipes can also be used, two of which are used as heat pipe sections of the first heat exchange member 631 to be connected to all positive electrode columns, the other two are used as heat pipe sections of the first heat exchange member 631 to be connected to all negative electrode columns, and four are used as second heat pipe sections.
  • the heat pipe section of the heat exchange member 632 is directly embedded into the two first through grooves 621 without bending. Since the embedding length is limited, its heat exchange area is smaller compared to this embodiment.
  • both the heat pipe and the temperature control tube are circular tubes. Therefore, the cross sections of the first through groove 621 and the second through groove 622 are preferably semicircular. The inside of the through groove 622 is extruded and deformed so that it is in close contact with the groove wall to achieve good heat exchange.
  • the first through-slot 621 and the second through-slot 622 may have various shapes, as long as the second heat exchange member 632 and the first through-slot 621 , the temperature control tube and the second through-slot 622 can be tightly connected. Just make contact.
  • the heat exchange seat 62 in this embodiment also includes a temperature control tube pressure plate 623 and a heat pipe support plate 624; in other embodiments, it may only include a temperature control tube pressure plate 623 or a heat pipe support plate 624.
  • the temperature control tube pressure plate 623 is fixed on the top of the heat exchange seat body 620, and the heat pipe support plate 624 is fixed on the bottom of the heat exchange seat body 620; as shown in Figure 42, the bottom surface of the temperature control tube pressure plate 623 has multiple openings extending along the y direction.
  • the third through groove 6232 is arranged in the The top surface of 624 is provided with a plurality of fourth through grooves 6242 extending in the y direction, arranged in the x direction, and corresponding to the first through grooves 621.
  • the fourth through grooves 6242 and the first through grooves 621 are spliced to form a second through hole.
  • Thermal piece 632 contains the cavity. Based on the temperature control tube pressure plate 623 and the heat pipe support plate 624, the heat pipe and the first through groove 621, the temperature control tube and the second through groove 622 can be in closer contact, thereby improving the heat exchange effect.
  • the edges of the temperature control tube pressure plate 623 and the heat pipe support plate 624 can be fastened with bolts to further strengthen the installation stability of the heat pipe and the temperature control tube.
  • the temperature control tube pressure plate 623 and the heat pipe support plate 624 are both made of insulating materials, such as ABS, to further ensure the insulation performance of the overall structure.
  • the heat exchange seat 62 of this embodiment also includes a condensation water collection tray 625.
  • the condensation water collection tray 625 includes a disk body 6251 and a configuration
  • the tray body 6251 is located between the heat pipe support plate 624 and the top of the battery pack main body.
  • the water outlet pipe 6252 extends along the y direction, and its two ends extend out of the side wall of the battery pack main body 61.
  • this embodiment is a battery cluster, which includes several series-connected battery pack bodies in Embodiment 7, and also includes several primary heat exchange tubes 602 and heat exchange seats 62.
  • the primary heat exchange tubes 602 The structural form of the heat exchange seat 62 and the installation and cooperation method with the battery pack main body are the same as those in Embodiment 7.
  • the following three options can be used to arrange the secondary heat exchange tubes 64:
  • Solution 1 Use a single secondary heat exchange tube 64, arranged in a sub-shape or S shape on the heat exchange seats of all battery packs (see Figure 45; this solution has a simple arrangement method, and the temperature control tube is a whole piece The tube has no leakage points and prevents the heat exchange medium from flowing into the battery pack and causing short circuit problems.
  • Option 2 Use multiple secondary heat exchange tubes 64, which can be understood as connecting the secondary heat exchange tubes 64 of each battery pack end to end to form a complete secondary heat exchange tube. Both ends of the tube serve as the inlet and outlet of the heat exchange medium.
  • the arrangement method of this solution is more complicated, and leakage points are easily formed at the connecting parts of the secondary heat exchange tubes of each battery pack, causing the heat exchange medium to flow into the battery pack and cause a short circuit.
  • Option 3 Use multiple secondary heat exchange tubes.
  • the multiple secondary heat exchange tubes extend along the y-direction and are arranged in the x-direction.
  • Each secondary heat exchange tube is arranged at the same central axis of each battery pack in Embodiment 7.
  • both ends of each secondary heat exchange tube can serve as the inlet and outlet of the heat exchange medium.
  • the heat dissipation method of the above-mentioned primary heat exchange tube and secondary heat exchange tube has low energy consumption, high efficiency and high cost performance. It is suitable for temperature control between series-connected large battery packs and is of great significance to the safe and stable operation of the battery.
  • this embodiment provides a battery pack with a temperature control system.
  • the temperature control system can not only process the heat of the battery body, but also process the heat of the battery poles. The temperatures at different locations of the entire battery are evenly distributed. It is effectively controlled and the safety of the battery is improved.
  • the temperature control system of this embodiment is mainly used in a battery pack.
  • a battery pack a plurality of batteries 71 are arranged sequentially along the thickness direction to form the main body of the battery pack.
  • the above-mentioned temperature control system includes a heat treatment part 72 and at least one heat transfer part 73; a part of the heat transfer part 73 is provided between adjacent batteries 71 for heat exchange with the battery shell of the single battery, and the other part extends to the battery
  • the main body of the pack is provided with battery posts 712 on one side.
  • the heat treatment part 72 is located on one side of the battery pole 712 and exchanges heat not only with the heat transfer part 73 but also with the battery pole 712 to control the temperature of different areas of the entire battery.
  • the heat transfer part 73 When the battery is temperature controlled, the heat transfer part 73 performs heat exchange with the battery case 711, and the heat transfer part 73 transfers heat from the part in contact with the battery case 711 to the part in contact with the heat treatment part 72; then, the heat treatment part 72 processes the transferred heat. At the same time, the heat treatment part 72 also directly exchanges heat with the battery pole 712 to process the heat generated by the battery pole 712 so that the temperature of the entire battery 71 is within the optimal range.
  • the above heat treatment part 72 and the heat transfer part 73 can be implemented in various forms of structures. The specific structures and preferred structures used in this embodiment will be described below.
  • the heat treatment part 72 in the temperature control system of this embodiment can use a variety of devices with heating and/or cooling functions.
  • the heat treatment part 72 can use a temperature control plate.
  • the temperature control plate is provided with a plurality of heat dissipation fins.
  • the heat transferred by the heat transfer part 73 is dissipated through the heat dissipation surface of the heat dissipation fins.
  • the temperature control plate can also be provided with a plurality of heat dissipation fins. Set the heating plate to have heating function.
  • the heat treatment part 72 may use a compression refrigerator or a TEC refrigerator, and the compression refrigerator or TEC refrigerator performs heat exchange with the heat transfer part 73 and the battery pole 712 .
  • the heat treatment part 72 can also use a heat exchange device 74.
  • the heat exchange device 74 adopts a structure such as a liquid cooling box or a liquid cooling tube, and realizes heat exchange through liquid medium circulation.
  • the heat treatment part 72 can cover at least part of the battery pole 712 in the width direction of the battery 71, so that it can achieve heat exchange with the battery pole 712.
  • the heat treatment part 72 directly performs heat exchange with the battery pole 712 to form a first-level heat conduction and improve the heat exchange efficiency.
  • the heat treatment part 72 preferentially adopts a heat exchange device 74 for liquid heat transfer.
  • the heat exchange device 74 has a rectangular box structure, and the width of the rectangular box is greater than the distance between the positive pole and the negative pole of the battery 71, so that the heat exchange device 74 can directly conduct heat transfer with the battery pole 712.
  • the inner cavity of the heat exchange device 74 is filled with liquid medium, which interacts with the heat transfer part when passing through the heat exchange device 74 .
  • the poles realize heat exchange at the same time.
  • the liquid medium may be water, ethylene glycol/water, propylene glycol/water, methanol/water, ethanol/water, calcium formate/water, or other fluids with thermal conductivity.
  • the above heat exchange device 74 is provided with an inlet and an outlet for the liquid medium.
  • the liquid medium absorbs heat in the heat exchange device 74 and then processes the heat through the external circulation device and cooling device.
  • the above circulation device and cooling device can use existing conventional cooling circulation systems, such as circulation pumps or chillers, and will not be described in detail here.
  • multiple partitions 741 can also be provided in the cavity of the above-mentioned heat exchange device 74, A plurality of partitions 741 control the flow direction of the liquid medium, so that the cooling flow channel of the heat exchange device 74 is a wavy flow channel.
  • the wavy cooling flow channel enables the liquid medium to fully flow into the cavity close to the poles on both sides. , so that the liquid medium can fully exchange heat with the battery pole 712 and improve the heat exchange efficiency with the battery pole 712 .
  • the battery poles 712 not only need to be electrically connected to the poles of the adjacent batteries 71, but also need to be electrically connected to the heat treatment part 72. heat exchange.
  • the top surface of the battery pole 712 can be designed in the form of a step.
  • the lower surface is the charging and discharging circuit connection surface, which is connected to the conductive connector to achieve series or parallel connection.
  • the high surface is the thermal conductive surface, which is in contact with the heat treatment part 72 to achieve heat exchange. .
  • the entire top surface of the battery 71 can also be set as a thermal conductive plane, and the poles of adjacent batteries 71 are electrically connected through the side surfaces of the poles.
  • the heat treatment part 72 is made of metal, the insulation problem between the heat treatment part 72 and the battery pole 712 needs to be considered, and an insulating layer or insulating pad 77 is provided on the contact surface between the heat treatment part 72 and the battery pole 712 , the insulating layer may specifically be insulating paint or insulating glue coated on the surface of the heat treatment part. In this way, the heat treatment part 72 and the battery pole 712 are in direct contact for heat exchange.
  • insulating pads with thermal conductivity effects such as thinner insulating thermal conductive silicon wafers.
  • the heat transfer part 73 is a component with heat transfer capability.
  • the battery 71 When the battery 71 is charging or discharging, it absorbs the heat generated by the battery 71 body and transfers the heat to the heat treatment part 72. Through heat treatment, The heat transfer part 72 processes the heat, or the heat transfer part 73 absorbs the heat of the heat treatment part 72 and then transfers the heat to the battery case 711 .
  • heat pipes, heat-conducting aluminum plates, heat-conducting copper plates, water-cooling plates, water-cooling tubes and other devices can be used.
  • the heat transfer part 73 is preferably a sheet structure that fits the side wall of the battery 71 case, so that it has a large heat exchange area with the battery case 711.
  • the heat transfer part 73 is made of metal, it may be a conductor. In this case, insulation needs to be provided between the battery case 711 and the heat transfer part 73, or between the heat transfer part 73 and the heat treatment part 72. Specifically, Insulation is achieved through insulating pads, insulating films, insulating paint or insulating glue to ensure the safe and reliable use of the battery pack.
  • the battery pack will bulge and deform after high-temperature storage or during charging and discharging.
  • the squeezing force generated by the bulge and deformation can easily cause the battery 71 to leak, which will also cause safety hazards.
  • a corresponding pressure-bearing structure can be provided between adjacent batteries 71 to suppress the deformation of the two adjacent battery cases 711 due to expansion.
  • the heat part 73 can achieve the above pressure-bearing function through the heat transfer part 73 or the installation structure of the heat transfer part 73. Specifically, it may include the following structural forms:
  • a groove 714 is provided on the side wall of the battery case 711.
  • the two grooves 714 of adjacent batteries 71 form an installation cavity, and the heat transfer part 73 is provided in the installation cavity.
  • the size of the heat transfer part 73 is larger than the size of the installation cavity, so that the heat transfer part 73 can suppress the deformation of the two adjacent battery cases 711 due to expansion;
  • the battery case 711 is provided with an elongated member 713 protruding from the side wall of the case.
  • the elongated member 713 of the adjacent battery 71 forms a positioning installation groove, which constitutes the positioning installation groove.
  • the number of elongated members 713 can be two or four; if the number of elongated members 713 constituting the positioning installation groove is two, then one is provided on the two adjacent side walls of the housing, and two The elongated members 713 on the side walls of each housing are staggered; if the number of elongated members 713 constituting the positioning installation slot is four, then two are respectively provided on the two adjacent side walls of the housing, and the two elongated members 713 are arranged in a staggered manner.
  • the positions of the elongated members 713 on the side walls of each case correspond one to one; the heat transfer part 73 is arranged in the positioning installation groove; in the battery arrangement direction, the size of the heat transfer part 73 is larger than the size of the positioning installation groove, so that the heat transfer part 73 is larger than the positioning installation groove.
  • the portion 73 can inhibit the deformation of two adjacent battery cases 711 due to expansion;
  • the battery case is provided with an elongated member 713 protruding from the side wall of the case.
  • the elongated members 713 of adjacent batteries contact to form a positioning installation groove, and the heat transfer part is arranged in the positioning installation groove; in this structure,
  • the manner in which different numbers of elongated members 713 form positioning installation grooves is similar to the second structure.
  • the size of the heat transfer part is smaller than the size of the positioning installation groove.
  • the heat transfer part 73 of the third structure is not in direct contact with the battery case. There is a certain gap between the side walls of the shell. The heat during heat exchange is transferred through the air, and the heat transfer effect is poor. Therefore, the first structure and the second structure are preferred.
  • the first structure and the second structure adopt a method of clamping the heat transfer part 73 so that the heat transfer part 73 is in close contact with the battery case 711, which is beneficial to heat transfer. Part 73 exchanges heat with the battery case.
  • the above-mentioned structural method of using the heat transfer part 73 as a pressure-bearing structure can buffer and reduce the expansion pressure of adjacent batteries, avoid leakage, internal short circuit, thermal runaway and other safety hazards caused by bulging deformation, and improve the safety of the entire battery pack. performance and reliability.
  • the heat transfer part 73 is provided between two adjacent batteries 71, which can also provide a heat dissipation channel for the two adjacent batteries 71. The heat generated by the battery 71 can be output in a timely and effective manner through the heat dissipation channel, further improving the battery pack. The heat dissipation effect.
  • the heat transfer part 73 of this embodiment not only has the above pressure-bearing performance, but also mainly realizes heat exchange between the battery case 711 and the heat treatment part 72 .
  • a bent section 731 can be provided on the top of the heat transfer section 73.
  • the bent section 731 is preferably a heat transfer plane.
  • the surface opposite to the heat treatment part 72 is in close contact.
  • the heat transfer part 73 conducts heat transfer with the heat treatment part 72 through the bending section 731.
  • the bending section 731 increases the heat transfer area between the heat transfer part 73 and the heat treatment part 72, thereby increasing the heat transfer area. Heat transfer efficiency.
  • the bending section 731 may not be provided in the heat transfer part 73 , and the top of the heat transfer part 73 may be heat exchanged with the heat treatment part 72 .
  • the contact area between the heat transfer part 73 and the heat treatment part 72 can be provided with a plurality of slots 742 recessed toward the inner cavity of the heat treatment part 72 at the bottom, and the top of the heat transfer part 73 is embedded in the slots 742 of the heat exchange device 74, and The heat exchange device 74 performs heat exchange.
  • the slot 742 can also be directly provided in the partition 741 .
  • this structure has higher requirements on the structural form of the heat treatment part 72 .
  • the above-mentioned heat transfer part 73 preferably uses a gravity heat pipe.
  • the evaporation end of the gravity heat pipe is in contact with the battery 71 shell.
  • the contact performs heat exchange, and the condensation end and the heat treatment part 72 perform heat exchange.
  • the battery poles are generally set upward.
  • the gravity heat pipe is used in the vertical direction, and its heat conduction effect is optimal.
  • the heat treatment part 72 can be connected to the support structure outside the battery pack to support the heat treatment part, and the heat treatment part 72 can be installed on the side wall of the battery case.
  • the boss is installed to support the heat transfer part 73 .
  • the above-mentioned temperature control system and the battery pack main body can be assembled together to form a modular device.
  • the battery pack has a more compact structure, takes up less space, is easy to assemble, and is portable.
  • the integrated connection is achieved through the following clamping components.
  • the clamping assembly includes a pressure plate 75 and a backing plate 76; the backing plate 76 is located below the bending section 731 and is disposed between the positive pole and the negative pole of the battery 71.
  • the pressure plate 75 is located above the heat treatment part 72.
  • the pressure plate 75 adopts a U-shaped plate structure.
  • the heat treatment part 72 is embedded in the U-shaped plate.
  • the pressure plate 75 and the backing plate 76 connect the heat transfer part 73 and the heat treatment part 72.
  • the U-shaped plate is The bottom of the plate is fixedly connected to the battery case 711, or the bottom of the U-shaped plate is fixedly connected to the pad 76, and then the pad 76 is fixedly connected to the battery case 711, and then the temperature control system is connected to the main body of the battery pack as One body.
  • a positioning groove 761 is provided on the end surface of the above-mentioned backing plate 76 close to the pair of heat treatment parts 72.
  • the bent section 731 is embedded in the positioning groove 761 to reliably position and install the heat transfer part 73.
  • the above pressure plate 75 and backing plate 76 are preferably made of insulating materials while achieving stable installation, so that the safety of the entire battery pack is better.
  • the pressing plate 75 and the backing plate 76 may be made of plastic plates, pp plates, pe plates, nylon plates, PC plates, ceramic plates, resin plates, etc.
  • the heat transfer part 73 is not provided with the bending section 731 and adopts an embedded structure with the heat treatment part 72, the bottom of the heat treatment part 72 and the slot are coated with insulating paint or insulating glue to achieve insulation treatment. At this time, there is no need to provide a backing plate.
  • the pressure plate 75 adopts a U-shaped plate structure.
  • the liquid cooling plate is embedded in the U-shaped plate.
  • the bottom of the U-shaped plate is directly connected with the fixing column on the battery case 711 using bolts, thereby connecting the temperature control system with the
  • the main body of the battery pack is connected into one body to realize the modularization of the entire battery pack.
  • FIG. 52 it is a schematic structural diagram of the large-capacity battery case in this embodiment, including a cover 861 and a cylinder 862 , and also includes a temperature control system 820 .
  • the cover plate and the cylinder are split.
  • the names of the cover plate and the cylinder are only to clearly explain the specific positions of the battery housing, and do not specifically refer to the integrated housing or the split housing. , in other embodiments, the cover plate and the cylinder are integrated, which also falls within the protection scope of this embodiment.
  • the temperature control system 820 includes a temperature equalization part 81 and a thermal management part 82.
  • the temperature equalization part 81 is provided in the housing 860.
  • the thermal management part 82 is provided on the cover plate 861 of the housing 860 and extends through the cover plate 861 to the shell.
  • the temperature equalization part 81 includes a heat-absorbing material layer. When the battery core assembly is placed in the casing 860 , the heat-absorbing material layer fills the gap between the battery core assembly and the casing 860 to absorb the heat emitted from multiple points in the casing 860 .
  • the heat-absorbing material layer is a phase change material layer 811.
  • the phase change material layer is a paraffin composite material layer, and the phase change temperature is a minimum of 55 degrees.
  • the contact area between the temperature equalizing portion 81 and the pole 840 extending along the direction of the battery core stack is very large.
  • the heat absorbing material layer of the temperature equalizing portion 81 can cover the fins 842 of the pole 840.
  • the heat-absorbing material layer also has a large contact area with the cylinder 862. When the temperature of the cylinder 862 rises, its heat can also be absorbed by the heat-absorbing material layer.
  • the battery cell assembly refers to all components in the battery case 860 except for the temperature control system involved.
  • the temperature control system includes a thermal management part 82.
  • the thermal management part 82 includes at least one of a liquid cooling pipe, a heat pipe, a heat exchanger, and a semiconductor refrigerator.
  • the thermal management part 82 is provided on the cover 861 and includes a heat pipe 821 and a heat exchanger 822. One end of the heat pipe 821 is connected to the heat exchanger 822. The heater 822 is connected, and the other end is bent and extended into the housing 860 .
  • the thermal management part 82 also includes a liquid cooling pipe 823, which is fixedly connected to the heat exchanger 822, so that the heat pipe 821 and the liquid cooling pipe 823 perform heat exchange.
  • the liquid cooling pipe 823 can connect the shells of multiple large-capacity batteries.
  • the heat pipe 821 conducts heat to the heat exchanger 822 and then conducts the heat to the liquid cooling pipe 823. The cold water circulating in the liquid cooling pipe further circulates the heat.
  • a heat pipe fixing groove 8211 is provided in the housing 860.
  • the heat pipe fixing groove 8211 is provided along the length direction of the cylinder.
  • the heat pipe 821 is embedded in the heat pipe fixing groove 8211 and fixed.
  • the heat pipe fixing groove is provided on one side of the pole 840 for absorbing the heat emitted by the pole 840 .
  • the thermal management part 82 is also provided with a protective cover 824, which is arranged on the heat exchanger 822; the heat exchanger 822 is a ceramic heat exchanger and is screwed to the cover plate 861.
  • An insulating block 8222 is also provided between the heat pipe block 221 and the liquid cooling pipe 823 to prevent the heat pipe 821 from contacting the pole 840 and then conducting electricity to the liquid cooling pipe 823.
  • the thermal management part 82 usually includes two heat pipes 821 that respectively extend through the cover 861 into the positive electrode column and the negative electrode column to control the temperatures of the positive electrode column and the negative electrode column respectively.
  • the two heat pipes 821 do not contact in the heat exchanger fixing groove 2211.
  • the protective cover 824 has an accommodating space to fit the heat exchanger 822 and the fixed heat pipe 821 for fixed installation to protect the heat pipe.
  • the protective cover 824 is provided with connection holes in its circumferential direction, and the protective cover 824 and the heat exchanger 822 are screwed together. In some embodiments, other methods such as welding, hot melting, and bonding can also be used.
  • This embodiment provides a battery, including a battery core and the above-mentioned battery case 860.
  • FIG. 52 it is a schematic structural diagram of a large-capacity battery case, including a cover 861 and a cylinder 862 , and also includes a temperature control system 820 .
  • the cover plate and the cylinder are split.
  • the names of the cover plate and the cylinder are only to clearly explain the specific positions of the battery housing, and do not specifically refer to the integrated housing or the split housing. , in other embodiments, the cover plate and the cylinder are integrated, which also falls within the protection scope of this embodiment.
  • This embodiment also provides a heat exchange device for use in the above battery temperature control system.
  • the heat exchange device includes an insulating heat exchange member for heat exchange between the first heat transfer part and the second heat transfer part.
  • the insulation specifically use insulating heat exchange plates or insulating heat exchange sleeves that are non-conductive and have good thermal conductivity.
  • the insulating heat exchange plates or insulating heat exchange sleeves can be devices of different structural forms, as long as the first heat transfer part and the third heat transfer part can be realized.
  • the heat exchange and insulation of the second heat transfer part are enough.
  • This heat exchange device is an indirect heat exchange device. Indirect heat exchange requires a large contact area between the first heat transfer part and the second heat transfer part to conduct heat relatively smoothly. At the same time, it requires that the first heat transfer part and the second heat transfer part
  • the hot parts must not come into contact to prevent electric shock. Therefore, choose thermally conductive ceramic plates or thermally conductive ceramic sleeves that are insulated and have high thermal conductivity.
  • the first heat transfer part is provided on the first surface of the insulated heat exchange plate
  • the second heat transfer part is provided on the second surface of the insulated heat exchange plate
  • the first heat transfer part and the second heat transfer part are both arranged on the first surface of the insulating heat exchange plate
  • the first surface and the second surface are two opposite surfaces of the insulating heat exchange plate.
  • the first heat transfer part and the second heat transfer part can be arranged on the same side of the insulating heat exchange plate, or they can be arranged on both sides of the insulating heat exchange plate.
  • the insulating heat exchange plate is a thermally conductive ceramic plate.
  • the thermally conductive ceramic plate can be an alumina ceramic plate, a silicon nitride ceramic plate, a zirconia ceramic plate, a silicon carbide ceramic plate, a magnesium oxide ceramic plate, or a boron nitride ceramic. plate, aluminum nitride ceramic plate, beryllium oxide ceramic.
  • the insulating heat exchange part is an insulating heat exchange sleeve
  • the first heat transfer part is inserted into the central cavity of the insulating heat exchange sleeve, and the second heat transfer part is arranged on the outer wall of the insulating heat exchange sleeve, or the second heat transfer part
  • the first heat transfer part is inserted into the central cavity of the insulating heat exchange sleeve, and the first heat transfer part is arranged on the outer wall of the insulating heat exchange sleeve.
  • the insulating heat exchange sleeve is a thermally conductive ceramic sleeve.
  • the thermally conductive ceramic sleeve can be an alumina ceramic sleeve, a silicon nitride ceramic sleeve, a zirconia ceramic sleeve, a silicon carbide ceramic sleeve, a magnesium oxide ceramic sleeve, or a boron nitride ceramic sleeve. , one of aluminum nitride ceramic sleeves and beryllium oxide ceramic sleeves.
  • the second heat transfer part or the first heat transfer part may be arranged on the outer wall of the insulating heat exchange jacket by winding.
  • This embodiment uses a thermally conductive ceramic plate and a thermally conductive ceramic sleeve to achieve heat transfer and insulation. While having excellent thermal conductivity efficiency, it also has good insulation performance, so that the heat exchange device not only has heat transfer and insulation performance, but also has It has the advantages of simple structure, small volume and mass.
  • a first pressure plate and/or a second pressure plate can also be provided on both sides of the insulating heat exchange plate.
  • There is a first groove the first heat transfer part is arranged in the first groove
  • the second pressure plate and/or the second surface of the insulating heat exchange plate is provided with a second groove
  • the second heat transfer part is arranged in the second inside the groove.
  • a heat conductive plate is also provided between the second pressure plate and the insulating heat exchange plate.
  • the thermal conductive plate can be a plate-shaped structure with good thermal conductivity, such as an aluminum plate, etc.
  • a second groove can be provided on the heat conduction plate, and the second groove can be used to install the second heat transfer part.
  • the above-mentioned first groove and second groove can have various shapes, as long as the first heat transfer part and the second heat transfer part can be in close contact with the insulating heat exchange plate, the first pressure plate, the second pressure plate and the heat conduction plate. That is, the first pressing plate and the second pressing plate can be made of non-conductive materials, such as polytetrafluoroethylene, etc.
  • the above-mentioned first groove and second groove are semicircular grooves or arcuate grooves, and the first heat transfer part and the second heat transfer part are squeezed and Deformation makes it in close contact with the insulating heat exchange plate, the first pressure plate, the second pressure plate and the heat conduction plate to achieve good heat exchange.
  • the number of the above-mentioned second grooves and the first grooves can be set according to the needs.
  • there are two above-mentioned second grooves and two first grooves and there are two first heat transfer parts, which are respectively provided in the two second grooves.
  • the distance between the first heat transfer part and the second heat transfer part on both sides of the insulating heat exchange plate needs to be set to the shortest distance.
  • the first heat transfer part and the two second heat transfer parts are The heat parts are all staggered, and the first heat transfer part is located between the two second heat transfer parts. At this time, the first heat transfer part and the two second heat transfer parts can perform better heat exchange.
  • the heat exchange device in this embodiment implements heat exchange between a first heat transfer part 911 and two second heat transfer parts 921.
  • the heat exchange device can be an insulated heat exchange plate 931.
  • the hot plate 931 may be a thermally conductive ceramic plate.
  • the thermally conductive ceramic plate is made of highly thermally conductive ceramic materials such as silicon nitride, aluminum nitride, and boron nitride.
  • a first groove 936 and two second grooves 935 are provided on the same end surface of the thermally conductive ceramic plate, and the first The groove 936 is provided between the two second grooves 935.
  • the second groove 935 and the first groove 936 are preferably semicircular grooves or arcuate grooves.
  • the first heat transfer part 911 is embedded in the first groove 936.
  • Two The second heat transfer parts 921 are respectively embedded in the second grooves 935.
  • the first heat transfer part 911 and the second heat transfer part 921 seamlessly contact each other through the arc groove of the thermally conductive ceramic plate for heat exchange.
  • the above-mentioned first heat transfer part 911 The second heat transfer part 921 can be clamped on the thermally conductive ceramic plate through a clamp, or fixed on the thermally conductive ceramic plate through another insulating heat exchange plate 931 and screws. Of course, another insulating heat exchange plate 931 can also be provided.
  • the heat exchange device is a device with simple structure, low cost and high heat transfer efficiency.
  • the heat exchange device in this embodiment implements heat exchange between a first heat transfer part 911 and two second heat transfer parts 921.
  • the heat exchange device can be an insulated heat exchange plate 931.
  • the hot plate 931 may be a thermally conductive ceramic plate.
  • the thermally conductive ceramic plate is made of highly thermally conductive ceramic materials such as silicon nitride, aluminum nitride, boron nitride, etc., and performs heat exchange between the first heat transfer part 911 and the second heat transfer part 921.
  • a first groove 936 is provided on the first surface of the thermally conductive ceramic plate
  • a second groove 935 is provided on the second surface.
  • the first surface and the second surface are two opposite surfaces of the thermally conductive ceramic plate.
  • the second groove 935 and the first groove 936 are preferably semicircular grooves or arcuate grooves.
  • the first heat transfer part 911 is inserted into the first groove 936, and the second heat transfer part 921 is inserted into the two second grooves 935.
  • the first heat transfer part 911 and the second heat transfer part 921 exchange heat through seamless contact with the arc groove of the thermally conductive ceramic plate.
  • the first heat transfer part 911 and the thermally conductive ceramic plate are pre-riveted together.
  • the portion 921 can be clamped on the thermally conductive ceramic plate through a clamp, or fixed on the thermally conductive ceramic plate through a second pressure plate 933 and screws.
  • the second pressure plate 933 can also be provided with a shape matching the second groove 935
  • the groove fastens the second heat transfer part 921 to the thermally conductive ceramic plate, thereby achieving good heat exchange.
  • the heat exchange device in this embodiment implements heat exchange between a first heat transfer part 911 and two second heat transfer parts 921.
  • the heat exchange device may specifically include an insulating heat exchange plate 931, a first heat transfer part 911, and a first heat transfer part 921.
  • the pressure plate 932 and the second pressure plate 933; the insulating heat exchange plate 931 is a thermally conductive ceramic plate and is arranged between the first pressure plate 932 and the second pressure plate 933.
  • the thermally conductive ceramic plate uses aluminum nitride high thermal conductivity ceramic material to conduct the first heat transfer. part 911 and the entire second heat transfer part 921.
  • a first groove is provided on the end surface of the first pressure plate 932 close to the thermally conductive ceramic plate, the first heat transfer part 911 is provided in the first groove, and a second groove 935 is provided on the end surface of the second pressure plate 933 close to the thermally conductive ceramic plate.
  • the second heat transfer part 921 is arranged in the second groove 935, the second groove 935 and the first groove are preferably semicircular grooves or arcuate grooves, the first heat transfer part 911 is embedded in the first groove, and the two second heat transfer parts 911 are embedded in the first groove.
  • the second heat transfer part 921 is respectively embedded in the two grooves 935, and the heat exchange between the first heat transfer part 911 and the second heat transfer part 921 is realized through the thermally conductive ceramic plate.
  • the first heat transfer part 911 and the first pressure plate 932 are pre-pressed. riveted together, the contact surface of the first heat transfer part 911 and the thermally conductive ceramic plate is a flat surface, and the remaining flat surface is used to transmit heat.
  • the second heat transfer part 921 can be clamped between the second pressure plate 933 and the thermally conductive ceramic plate.
  • the surface of the second heat transfer part 921 that is in contact with the thermally conductive ceramic plate is also a flat surface, that is, the second heat transfer part 921 is also pressed out of a flat surface, which is used to transmit heat in close contact with the aluminum nitride ceramic plate, because the thermal conductivity of aluminum nitride is relatively high.
  • the planes riveted between the second heat transfer part 921 and the first heat transfer part 911 are in close contact, and heat exchange can be carried out through the aluminum nitride heat conduction sheet.
  • the first pressure plate 932 and the second pressure plate 933 can be screwed Continue to tighten.
  • the heat exchange device in this embodiment realizes heat exchange between one first heat transfer part 911 and two second heat transfer parts 921, or realizes two first heat transfer parts 911 and two second heat transfer parts 921.
  • the heat exchange device 93 includes an insulating heat exchange plate 931, a first pressure plate 932 and a second pressure plate 933.
  • the insulating heat exchange plate 931 is a thermally conductive ceramic plate and is provided on the first pressure plate 932.
  • the thermally conductive ceramic plate is made of aluminum nitride high thermal conductive ceramic material to perform heat exchange between the first heat transfer part 911 and the second heat transfer part 921.
  • a first groove is provided on the end surface of the first pressure plate 932 close to the thermally conductive ceramic plate.
  • the second pressure plate 933 is in contact with the thermally conductive ceramic plate.
  • the end surfaces are each provided with a second groove 935, and the second heat transfer part is provided in the second groove 935.
  • the second groove 935 and the first groove are preferably semicircular grooves or arcuate grooves, and the second heat transfer part is inserted into the first groove.
  • a heat transfer part 911, a second heat transfer part 921 is embedded in the second groove 935, and heat exchange between the first heat transfer part 911 and the second heat transfer part 921 is realized through the thermally conductive ceramic plate.
  • the first heat transfer part 911 and The first pressure plate 932 is riveted together in advance.
  • the surface of the first heat transfer part 911 that contacts the thermally conductive ceramic plate is a flat surface, and the remaining flat surface is close to the thermally conductive ceramic plate for heat transmission.
  • the first heat transfer part 911 is large Part of the heat transfer surface is in close contact with the thermally conductive ceramic plate, and the heat transfer effect is good.
  • the second heat transfer part 921 can be clamped between the second pressure plate 933 and the thermally conductive ceramic plate. Because the thermal conductivity of aluminum nitride is relatively high, the second heat transfer part 921 and the first heat transfer part 911 are riveted into a flat surface. After being in close contact, heat can be exchanged through the aluminum nitride thermal conductive sheet. Finally, the first pressure plate 932 and the second pressure plate 933 can be tightened with screws.
  • the heat exchange device in this embodiment realizes heat exchange between two first heat transfer parts 911 and two second heat transfer parts 921.
  • the heat exchange device 93 includes first pressure plates 932 arranged in sequence. , insulating heat exchange plate 931, heat conductive plate 934 and second pressure plate 933.
  • the insulating heat exchange plate 931 is a heat conductive ceramic plate.
  • the heat conductive ceramic plate is made of aluminum nitride high thermal conductive ceramic material.
  • the heat conductive plate 934 is an aluminum plate.
  • the first heat transfer part is 911 and the second heat transfer part 921 for heat exchange.
  • a first groove is provided on the end surface of the first pressure plate 932 close to the thermally conductive ceramic plate. There are two first heat transfer parts 911 arranged in the first groove.
  • the end surfaces of the second pressure plate 933 and the heat conduction plate 934 are all in contact.
  • the second groove 935 and the first groove are preferably semicircular grooves or arcuate grooves, and the first heat transfer part is embedded in the first groove.
  • part 911, the second heat transfer part 921 is embedded in the second groove 935, and the heat exchange between the first heat transfer part 911 and the second heat transfer part 921 is realized through the heat conductive ceramic plate and the heat conduction plate 934.
  • the first heat transfer part 911 It is pre-riveted with the first pressure plate 932.
  • the surface of the first heat transfer part 911 that contacts the thermally conductive ceramic plate is a flat surface.
  • the flat surface is close to the thermally conductive ceramic plate for heat transmission. Most of the heat transfer surface of the first heat transfer part 911 and Thermal conductive ceramic plates are in close contact and have good heat transfer effect.
  • the second heat transfer part 921 can be clamped between the second pressure plate 933 and the heat conduction plate 934. Because the thermal conductivity of aluminum nitride and aluminum is relatively high, the second heat transfer part 921 and the first heat transfer part 911 can pass through nitrogen. Aluminum and aluminum plates are used for heat exchange. Finally, the first pressure plate 932 and the second pressure plate 933 can be further fastened with screws.
  • the heat exchange device 93 in this embodiment includes an insulating heat exchange sleeve 937.
  • the first heat transfer part 911 is inserted into the central cavity of the insulating heat exchange sleeve 937, and the second heat transfer part 921 is provided in On the outer wall of the insulating heat exchange sleeve 937, or the second heat transfer part 921 is inserted into the central cavity of the insulating heat exchange sleeve 937, and the first heat transfer part 911 is disposed on the outer wall of the insulating heat exchange sleeve 937.
  • the insulating heat exchange sleeve 937 is a thermally conductive ceramic sleeve.
  • the thermally conductive ceramic sleeve can specifically be an alumina ceramic sleeve, a silicon nitride ceramic sleeve, a zirconia ceramic sleeve, a silicon carbide ceramic sleeve, a magnesium oxide ceramic sleeve, or a boron nitride ceramic sleeve.
  • the second heat transfer part 921 or the first heat transfer part 911 can be provided on the outer wall of the insulating heat exchange jacket 937 by winding.
  • This embodiment uses a thermally conductive ceramic sleeve to achieve heat transfer. While it has excellent thermal conductivity efficiency, it also has good insulation properties. Therefore, while the heat conduction component has heat transfer and insulation properties, it also has a simple structure, relatively small volume and mass. Small advantages.
  • the first heat transfer part 911 is inserted into the hole in the ceramic body with spiral grooves.
  • the ceramic body has a two-half structure with a clamping gap in the middle.
  • the second heat transfer part 921 is wrapped in the spiral groove of the ceramic body to clamp the ceramic body.
  • the assembled ceramic body is installed in the upper and lower press sleeves 938. There is a clamping gap in the middle of the upper and lower press sleeves 938 and is tightened with screws. .
  • the heat exchange device includes a heat exchange member for realizing heat exchange between a first heat transfer member and a second heat transfer member, wherein the first heat transfer member It can conduct electricity; the heat exchanger is provided with a first mounting part and a second mounting part; the number of the above-mentioned first mounting part and the second mounting part is at least one, and can be set according to the needs.
  • the first mounting part is used to install the second mounting part.
  • a heat transfer member, the second mounting part is used to install the second heat transfer member, the first heat transfer member is insulated from the heat exchange member, or the first heat transfer member is insulated from the second heat transfer member.
  • the heat exchange element has a plate-like structure, which can be an integrated structure or a split structure.
  • the first mounting part and the second mounting part can be in various forms of structures, as long as the first heat transfer element and the second heat transfer element can be installed on the heat exchange element, for example, clamps, connecting straps, holes, grooves wait.
  • the first heat transfer member is a component with a heat transfer function and capable of conducting electricity, such as a heat pipe, a gravity heat exhaust, an aluminum tube, etc.;
  • the second heat transfer member is a component with a heat transfer function, such as an aluminum tube, copper tube, etc.
  • a heat exchange member is used to realize heat transfer and insulation between the first heat transfer member and the second heat transfer member.
  • the heat exchange member has excellent heat transfer efficiency, it also has good insulation performance and also has It has the advantages of simple structure, small volume and mass.
  • the heat exchange device provided in this embodiment includes a heat exchange member 101.
  • the heat exchange member 101 is an integrated plate-shaped structure and is used to implement the first heat transfer member 102.
  • the first mounting part 1011 and the second mounting part 1012 are both through grooves, and the through grooves are provided on the same side of the heat exchange member 101.
  • an insulating sleeve 1016 or an insulating coating 1015 is provided in the through slot for installing the first heat transfer member 102, or an insulating sleeve is provided at the second installation part 1012.
  • the size of the through groove is slightly larger than the size of the first heat transfer member 102 and the second heat transfer member 103, which is beneficial to the first heat transfer member 102 and the second heat transfer member 103 are tightly locked in the through groove.
  • the shape of the above-mentioned through groove can be various, as long as the first heat transfer member 102, the second heat transfer member 103 and the heat exchange member 101 can be in close contact.
  • the above-mentioned through groove is a semicircular groove or an arcuate groove, and the first heat transfer member 102 and the second heat transfer member 103 are extruded and deformed in the through groove so that they are in close contact with the heat exchange member 101. Achieve good heat exchange.
  • a preferred method is to set the heat transfer distance between the first heat transfer member 102 and the second heat transfer member 103 to be the shortest.
  • the distance H between the center of the first mounting part 1011 and the center of the second mounting part 1012 is greater than the sum of the radii of the first heat transfer member 102 and the second heat transfer member 103, and smaller than the sum of the radii of the first heat transfer member 102 and the second heat transfer member 103.
  • the heat exchange device provided in this embodiment includes a heat exchange member 101.
  • the heat exchange member 101 is an integrated plate structure and is used to realize the first heat transfer member 102 and the second heat transfer member 102. Heat exchange between heat transfer elements 103.
  • the through grooves for installing the first heat transfer member 102 and the second heat transfer member 103 are provided on the opposite sides of the heat exchange member 101.
  • the first heat transfer member 102 or the second heat transfer member 103 is installed
  • An insulating coating 1015 or an insulating sleeve 1016 is provided in the through groove of the heat transfer member 103 .
  • the first heat transfer member 102 and the second heat transfer member 103 Since the contact area of the first heat transfer member 102 and the second heat transfer member 103 is large, heat can be conducted relatively smoothly. At the same time, in order to ensure the heat transfer efficiency, the first heat transfer member 102 and the second heat transfer member 103 on both sides of the heat exchange member 101 The distance between the heat transfer members 103 needs to be set to the shortest distance, so that the first heat transfer member 102 and the second heat transfer member 103 are closer to achieve heat exchange more quickly.
  • the shape of the through groove in this embodiment can be various.
  • the above-mentioned through groove is an arcuate groove, and the first heat transfer member 102 and the second heat transfer member 103 are extruded and deformed in the through groove, so that It is in close contact with the heat exchange member 101 to achieve good heat exchange.
  • the heat exchange device includes a heat exchange element 101.
  • the heat exchange element 101 is configured as a spliced structure, specifically including a first splicing piece 1013 and a second splicing piece 1014 that are connected.
  • the first mounting part 1011 is provided on the first splicing piece 1013, and the second mounting part 1012 is set on the second splicing piece 1014.
  • the first mounting part 1011 and the second mounting part 1012 are both through slots, and the through slots Disposed on the side of the first splicing piece 1013 and the second splicing piece 1014 in the same direction.
  • the first splicing member 1013 or the second splicing member 1014 is an insulating member, that is, a heat exchange member 101 with non-conductive and good thermal conductivity is used, for example , thermally conductive plastic plate, thermally conductive rubber plate, ceramic plate, etc., an insulating layer can also be provided between the connecting surfaces of the first splicing piece 1013 and the second splicing piece 1014 to achieve the purpose of insulation.
  • the size of the through groove can be slightly larger than the size of the first heat transfer member 102 and the second heat transfer member 103, which is beneficial to the first heat transfer member 102 and the second heat transfer member 103.
  • the heat element 102 and the second heat transfer element 103 are tightly clamped in the through groove.
  • the heat exchange device includes a heat exchange element 101.
  • the heat exchange element 101 is configured as a spliced structure, specifically including a first splicing piece 1013 and a second splicing piece 1014 that are connected.
  • the first mounting part 1011 is provided on the first splicing piece 1013, and the second mounting part 1012 is set on the second splicing piece 1014.
  • the through slot for installing the first heat transfer member 102 and the second heat transfer member 103 is provided on the side of the first splicing member 1013 and the second splicing member 1014 in the same direction.
  • the insulation method and other aspects are similar to Embodiment 19.
  • Embodiment 19 The difference from Embodiment 19 is that the first splicing piece 1013 and the second splicing piece 1014 in this embodiment are connected through the cooperation of protrusions and grooves.
  • the matching connection of the grooves makes the installation and cooperation of the first splicing piece 1013 and the second splicing piece 1014 more convenient and accurate.
  • the heat exchange device provided in this embodiment includes a heat exchange member 101.
  • the heat exchange member 101 is an integrated plate structure.
  • the first mounting part 1011 and the second mounting part 1012 are both For through holes, optimally, the center lines of multiple through holes are arranged in parallel.
  • An insulating sleeve or insulating coating is provided in the through groove of the second heat transfer member 103.
  • the size of the through hole can be slightly larger than the size of the first heat transfer member 102 and the second heat transfer member 103, which is beneficial to the first heat transfer member 102 and the second heat transfer member 103.
  • the heat element 102 and the second heat transfer element 103 are tightly clamped in the through hole.
  • the heat exchange device includes a heat exchange member 101.
  • the heat exchange member 101 is configured as a spliced structure, specifically including a first splice piece 1013 and a second splice piece 1014 that are connected.
  • the first mounting part 1011 is disposed on the first splicing piece 1013
  • the second mounting part 1012 is disposed on the second splicing piece 1014. At this time, both the first mounting part 1011 and the second mounting part 1012 are through holes.
  • the first splicing member 1013 or the second splicing member 1014 is an insulating member, that is, an insulating plate is used, such as a thermally conductive plastic plate, a thermally conductive rubber plate, or a ceramic. Board etc.
  • the size of the through hole can be slightly larger than the size of the first heat transfer member 102 and the second heat transfer member 103, which is beneficial to the first heat transfer member 102 and the second heat transfer member 103.
  • the heat element 102 and the second heat transfer element 103 are tightly clamped in the through hole.
  • an insulating pad or an insulating layer can also be provided on the contact surface of the first splicing member 1013 and the second splicing member 1014. Through the insulating pad Or the insulation layer realizes the insulation between the first heat transfer member 102 and the second heat transfer member 103 .

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)

Abstract

La présente invention concerne un système de commande de température de batterie, une batterie à haute capacité, un bloc-batterie, une coque de batterie et un appareil d'échange de chaleur, et résout principalement les problèmes selon lesquels des systèmes de commande de température de batterie existants présentent une faible efficacité, une structure complexe et un coût élevé. Le système de commande de température de batterie est utilisé pour traiter la chaleur générée par une batterie. La température de la batterie est principalement concentrée sur un montant ; un caloduc est disposé sur le montant de batterie ; lorsque la température de la batterie est trop élevée, le caloduc conduit la chaleur du montant dans le temps, et la chaleur est transférée vers l'extérieur au moyen d'un tuyau de régulation de température disposé sur le côté extérieur du montant ; en outre, lorsque la température de la batterie est trop basse, le tuyau de régulation de température transfère la chaleur d'un appareil d'échange de chaleur au caloduc, et le caloduc transfère la chaleur au montant de batterie, de telle sorte que la batterie fonctionne à une température optimale.
PCT/CN2023/101617 2022-06-27 2023-06-21 Système de commande de température de batterie, batterie à haute capacité, bloc-batterie, coque de batterie et appareil d'échange de chaleur Ceased WO2024001896A1 (fr)

Applications Claiming Priority (20)

Application Number Priority Date Filing Date Title
CN202210739160.2 2022-06-27
CN202210735881.6A CN115207513A (zh) 2022-06-27 2022-06-27 一种电池温控系统、大容量电池及大容量电池组
CN202221626656.0 2022-06-27
CN202210735881.6 2022-06-27
CN202210739160.2A CN115172944A (zh) 2022-06-27 2022-06-27 一种电池温控系统、大容量电池及大容量电池组
CN202221626656.0U CN218498156U (zh) 2022-06-27 2022-06-27 一种换热装置
CN202210927679.3 2022-08-03
CN202210927679.3A CN115312907A (zh) 2022-08-03 2022-08-03 一种电池组温控系统及大容量电池组
CN202210929700.3A CN115395133A (zh) 2022-08-05 2022-08-05 一种电池散热装置及大容量电池组
CN202210929700.3 2022-08-05
CN202222273290.XU CN218957851U (zh) 2022-08-29 2022-08-29 一种电池壳体及大容量电池
CN202222273290.X 2022-08-29
CN202211453654.0 2022-11-19
CN202211453654.0A CN117525663A (zh) 2022-11-19 2022-11-19 一种换热装置
CN202223188949.8 2022-11-30
CN202223188949.8U CN219144268U (zh) 2022-11-30 2022-11-30 一种温控组件、大容量电池及储能系统
CN202320332940.5 2023-02-28
CN202320332940.5U CN219658815U (zh) 2023-02-28 2023-02-28 一种电池组及电池簇
CN202320958703.XU CN219873708U (zh) 2023-04-25 2023-04-25 一种具有温控装置的电池组
CN202320958703.X 2023-04-25

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WO2024001896A1 true WO2024001896A1 (fr) 2024-01-04

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PCT/CN2023/101617 Ceased WO2024001896A1 (fr) 2022-06-27 2023-06-21 Système de commande de température de batterie, batterie à haute capacité, bloc-batterie, coque de batterie et appareil d'échange de chaleur

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CN118507917A (zh) * 2024-07-17 2024-08-16 河南国顺暖通物业节能服务有限公司 一种基于微电网的光储电能转换系统的电池箱散热结构
CN118738650A (zh) * 2024-06-21 2024-10-01 苏州宣佑科技有限公司 一种适用于串并联功能的电源壳体
CN120109357A (zh) * 2025-04-21 2025-06-06 宁德时代新能源科技股份有限公司 热管理组件、电池装置及用电装置

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CN218957851U (zh) * 2022-08-29 2023-05-02 陕西奥林波斯电力能源有限责任公司 一种电池壳体及大容量电池
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CN118249001A (zh) * 2024-05-28 2024-06-25 深圳市泰科动力系统有限公司 一种用于电动自动车锂电池温控装置
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CN118738650A (zh) * 2024-06-21 2024-10-01 苏州宣佑科技有限公司 一种适用于串并联功能的电源壳体
CN118738650B (zh) * 2024-06-21 2025-04-18 苏州宣佑科技有限公司 一种适用于串并联功能的电源壳体
CN118507917A (zh) * 2024-07-17 2024-08-16 河南国顺暖通物业节能服务有限公司 一种基于微电网的光储电能转换系统的电池箱散热结构
CN120109357A (zh) * 2025-04-21 2025-06-06 宁德时代新能源科技股份有限公司 热管理组件、电池装置及用电装置

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