WO2019235724A1 - 개선된 냉각 구조를 갖는 배터리 모듈 - Google Patents
개선된 냉각 구조를 갖는 배터리 모듈 Download PDFInfo
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- WO2019235724A1 WO2019235724A1 PCT/KR2019/002747 KR2019002747W WO2019235724A1 WO 2019235724 A1 WO2019235724 A1 WO 2019235724A1 KR 2019002747 W KR2019002747 W KR 2019002747W WO 2019235724 A1 WO2019235724 A1 WO 2019235724A1
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- Prior art keywords
- spacer
- base plate
- cell stack
- empty space
- battery module
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
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- 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
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- 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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- 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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
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- 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
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- 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
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- 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
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/258—Modular batteries; Casings provided with means for assembling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/668—Means for preventing spilling of liquid or electrolyte, e.g. when the battery is tilted or turned over
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
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- 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
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Definitions
- the present invention relates to a battery module having an improved cooling structure, and more particularly, by using insulating oil for cooling, and having an cooling structure such that the insulating oil can be in direct contact with the battery cell, improved cooling efficiency is achieved. It relates to a battery module having.
- водородн ⁇ е ⁇ е ⁇ ество Commercially available secondary batteries include nickel cadmium batteries, nickel hydride batteries, nickel zinc batteries, and lithium secondary batteries. Among them, lithium secondary batteries have almost no memory effect compared to nickel-based secondary batteries, and thus are free of charge and discharge. The self-discharge rate is very low and the energy density is high.
- Such lithium secondary batteries mainly use lithium-based oxides and carbon materials as positive electrode active materials and negative electrode active materials, respectively.
- the lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate coated with the positive electrode active material and the negative electrode active material are disposed with a separator interposed therebetween, and a packaging material that seals the electrode assembly together with the electrolyte solution, that is, a battery case.
- a lithium secondary battery may be classified into a can type secondary battery in which an electrode assembly is embedded in a metal can and a pouch type secondary battery in which an electrode assembly is embedded in a pouch of an aluminum laminate sheet, depending on the shape of the exterior material.
- secondary batteries are widely used not only in small devices such as portable electronic devices but also in medium and large devices such as automobiles and power storage devices.
- a large number of secondary batteries are electrically connected to increase capacity and output.
- a pouch-type cell is widely used in such a medium-large size device because of its easy stacking.
- the pouch type cell is generally packaged in a battery case of a laminate sheet of aluminum and a polymer resin, so that the mechanical rigidity is not large. Therefore, when constructing a battery module including a plurality of pouch-type cells, a frame is often used to protect the secondary battery from external shocks, to prevent the flow thereof, and to facilitate lamination.
- the frame may be replaced with various other terms such as a cartridge.
- the frame may be formed in a rectangular plate shape in which the center part is empty.
- the four side parts are configured to surround the outer circumference of the pouch type cell.
- the pouch-type cell may be located in the empty space inside when the frame is stacked.
- FIG. 1 a conventional battery module structure is shown.
- Such a conventional battery module structure when a plurality of pouch type cells (1) are stacked using a plurality of frames (2), a plate form on the outer surface of each of the pair of pouch type cells (1) By applying the cooling fins 3, the cooling efficiency is increased.
- the secondary battery may be used in a high temperature environment such as summer, and heat may also be generated in the secondary battery itself.
- the temperature of the secondary battery may be further increased. If the temperature is higher than an appropriate temperature, the performance of the secondary battery may be degraded, and in severe cases, there is a risk of explosion or fire. Therefore, when constructing the battery module, by applying the cooling fins 3 to be in contact with the face of the pouch type cell 1 and bringing the cooling fins 3 into contact with the cooling plate 4 located thereunder. Many configurations are used to prevent the overall temperature rise.
- the present invention has been made in view of the above-described problems, and provides a battery module having a cooling structure capable of direct contact between a cooling medium and a battery cell for cooling, thereby increasing the amount of heat generated by application of a high capacity and / or high power battery module. It is an object of the present invention to allow cooling to be efficiently performed.
- a battery module a cell stack formed by stacking a plurality of battery cells; And a module housing accommodating the cell stack, the module housing comprising a lower housing, a pair of side housings, a pair of front and rear housings, and an upper housing respectively covering the lower, both side, front, and top of the cell stack.
- the lower housing may include: a base plate having a hole section forming a flow path in at least one side region along a length direction and covering the lower surface of the cell stack; And a plurality of spacers disposed on the base plate at predetermined intervals and supporting the cell stack spaced apart from the base plate surface to form an empty space between the cell stack and the base plate.
- the silver may communicate with the empty space such that a cooling medium is supplied to the empty space.
- the plurality of spacers may be provided at one side and the other side in the longitudinal direction of the base plate, respectively, and both ends of the first spacer and the second spacer which extend along the width direction of the base plate to be in contact with both side regions of the base plate. It may include.
- the plurality of spacers may further include at least one third spacer spaced apart from the first spacer and the second spacer.
- the at least one side region of the base plate is defined by a first side portion and a second side portion corresponding to mutually opposing side regions, and the hole section is formed between the first spacer and the third spacer outside the base plate.
- a first section formed in the first side portion in communication with a first empty space located;
- a second section formed in the second side portion in communication from the first empty space to a second empty space located between the third spacer and the second spacer;
- a third section formed in the first side surface portion to communicate with the outside of the base plate in the second empty space.
- the third spacer may include a third spacer flow passage formed through the inside to allow the cooling medium to pass therethrough.
- a first cooling pipe having a first spacer flow path and a second spacer flow path formed through the first spacer and the second spacer, respectively, and connecting the hole section and the first spacer flow path; And a second cooling pipe connecting the hole section and the second spacer flow path.
- the at least one side region of the base plate is defined by a first side portion and a second side portion corresponding to mutually opposite side regions, wherein the first and second side portions are formed higher than other portions of the base plate, and the side portions
- the lower end of the housing may further include a coupling groove provided to engage with the engaging projection formed to protrude downward.
- the first and second side parts may further include a leakage preventing protrusion protruding in a form extending toward the cell stack to contact the outermost cell of the cell stack.
- An adhesive may be interposed between the cell stack and the spacer so that a cooling medium does not leak between the cell stack and the spacer.
- It may further include a supply pipe and a discharge pipe connected to one side and the other side of the hole section of the base plate for flowing in and out the cooling medium into the empty space.
- a battery pack in which a plurality of the above-described battery modules are connected and implemented may be provided.
- an automobile having the battery pack may be provided.
- a battery module with a cooling structure capable of direct contact between the cooling medium and the battery cell for cooling is efficiently cooled even in the heat generation increase according to the application of a high capacity and / or high power battery module.
- a high capacity and / or high power battery module In addition to improving the performance of the battery module, it is also possible to bring about the effect of preventing safety accidents such as the explosion or explosion of the battery cell due to the temperature rise.
- FIG. 1 is a view showing a cooling structure employed in a conventional battery module.
- FIG. 2 is a perspective view illustrating an appearance of a battery module according to an exemplary embodiment of the present invention.
- FIG. 3 is an exploded perspective view of a battery module according to an embodiment of the present invention.
- FIG. 4 is a perspective view illustrating a cell stack, a lower housing, and a side housing in a battery module according to an embodiment of the present invention.
- FIG. 5 is a view showing a lower housing structure for inducing the flow of the cooling medium according to an embodiment of the present invention.
- FIG. 6 is a cross-sectional view taken along line AA ′ and E-E ′ of FIG. 2.
- FIG. 8 is a cross-sectional view taken along line BB ′ and DD ′ of FIG. 2.
- FIG. 9 are enlarged views of both sides of the base plate of FIG. 8.
- FIG. 10 is a cross-sectional view taken along line CC ′ of FIG. 2.
- FIG. 11 are enlarged views of both side regions of the base plate of FIG. 10.
- FIG. 12 is a view corresponding to FIG. 5 showing a lower housing structure for inducing a flow of a cooling medium according to another embodiment of the present invention.
- FIG. 13 is an enlarged view of a main part of FIG. 12.
- FIG. 14 is a cross-sectional view of a portion of the first to third spacers according to another embodiment of the present invention.
- FIGS. 2 and 3 components of the battery module according to an exemplary embodiment of the present invention will be described schematically.
- FIG. 2 is a perspective view showing the appearance of a battery module according to an embodiment of the present invention
- Figure 3 is an exploded perspective view of a battery module according to an embodiment of the present invention.
- the battery module 10 is implemented in a form including a cell stack 100 and a module housing 20 for receiving the same.
- the module housing 20 includes a lower housing 200, a pair of side housings 300, a pair of front and rear housings 400, and an upper housing 500.
- the cell stack 100 is obtained by stacking a plurality of battery cells 110.
- the battery cell 110 used herein is not particularly limited as long as it is a secondary battery capable of charging and discharging.
- a pouch type battery cell 110 may be applied.
- Each of the battery cells 110 may include a pair of electrode leads 111 extending to one side and the other side, and the electrode leads 111 may include a positive electrode lead and a negative electrode lead.
- a space between the battery cells 110 forming the cell stack 100 is provided by a cooling medium such as insulating oil contacting the lower portion of the cell stack 100 as described below. It is preferable to be firmly fixed / closed by an adhesive or the like so as not to penetrate upward through the upper portion.
- the electrode leads 111 may be arranged / connected such that the battery cells 110 constituting the cell stack 100 form a series connection, a parallel connection, or a combination of a series and a parallel connection with each other.
- the lower housing 200 covers the lower surface of the cell stack 100 and has a base plate 210 having a hole section 213 for forming a flow path as a hollow structure in at least one side region in the longitudinal direction; A plurality of spacers 220 supporting the cell stack 100 spaced apart from the surface of the base plate 210 to form empty spaces S1 and S2 between the cell stack 100 and the base plate 210. It may be implemented in the form including.
- the empty spaces S1 and S2 mean a closed space surrounded by the cell stack 100, the spacer 220, and the base plate 210.
- the empty spaces S1 and S2 communicate with the hole section 213 to supply the cooling medium to the empty space.
- the cooling medium may be supplied and discharged into and out of the battery module 10 by connecting the supply pipe 230 and the discharge pipe 240 to the inlet and the outlet of the hole section 213, respectively.
- the supply pipe 230 may be connected to the inlet of the hole section 213 of the base plate 210 from the front of the battery module 10
- the discharge pipe 240 may be connected from the rear of the battery module 10. It may be connected to the exit of the hole section 213.
- the pair of side housings 300 respectively cover parts of both sides of the cell stack 100, and are disposed at outermost sides of the battery cells 110 constituting the cell stack 100. Face the broad side of The pair of side housings 300 may also perform a function of preventing a gap between the battery cells 110 forming the cell stack 100 by pressing the cell stack 100 from both sides.
- the pair of front and rear housings 400 may be implemented in a form including a bus bar frame 410, an insulating cover 420, and a front and rear cover 430, respectively.
- the busbar frame 410 is coupled to the cell stack 100 from the front or the rear of the cell stack 100, and the electrode leads 111 are inserted into the bus bar frame 410 to allow the battery cell 110 to be inserted.
- the bending of the electrode lead 111 for electrical connection between them facilitates. That is, the electrode leads 111 are inserted through the insertion slits formed in the bus bar frame 410 and then bent to form a coupling by welding or the like between the adjacent electrode leads 111.
- the insulating cover 420 is inserted / bended in the bus bar frame 410 to prevent contact between the electrode leads 111 that are not in contact with each other among the electrode leads 111 that are joined to each other. As a component applied for the purpose, it is coupled on the busbar frame 410 to prevent the short from being generated by external factors.
- the front and rear covers 430 are components coupled to the insulating cover 420, and serve to protect internal components such as the cell stack 100, the busbar frame 410, and the insulating cover 420.
- the upper housing 500 includes a sensing assay 510 and a sensing unit disposed on the cell stack 100 and electrically connected to the electrode leads 111 inserted / bended through the bus bar frame 410 described above.
- the top plate 520 may be coupled to an upper portion of the assay 510 to form an outermost layer of the upper housing 500.
- first side portions 211 and second side portions 212 portions corresponding to both side regions of the base plate 210 that face each other along the longitudinal direction are defined as first side portions 211 and second side portions 212. Let's do it.
- the first side portion 211 and the second side portion 212 may be formed higher than other portions (plate surfaces) of the base plate 210.
- the cell stack 100 has a lower surface between the first side portion 211 and the second side portion 212 supported by the spacers 220 so as to be spaced apart from the surface of the base plate 210, and both sides have a side housing 300. Supported by them.
- the side housing 300 includes a coupling protrusion 310 protruding downward from the lower end thereof.
- each of the first side portion 211 and the second side portion 212 of the base plate 210 includes a coupling groove G provided to be engaged with the coupling protrusion 310.
- the side housing 300 may be fixed to the first side portion 211 and the second side portion 212 of the base plate 210.
- the coupling protrusion 310 may be provided in the first and second side parts 212, and the coupling groove G may be fixed in the side housing 300.
- the first and second side parts 211 and 212 serve as, for example, fences for confining the cooling medium in the empty spaces S1 and S2, and further include a leakage preventing jaw P in contact with the cell stack 100. can do.
- the leakage preventing jaw P may be provided to extend in a horizontal direction toward the cell stack 100 to abut the outermost cell of the cell stack 100.
- the leak prevention jaw P may have a gap between the base plate 210 and the cell stack 100 to prevent leakage / leakage of the cooling medium.
- the adhesive may be further interposed along the leakage preventing jaw (P).
- the spacers 220 may be manufactured to correspond to the shape of the bottom surface of the cell stack 100.
- the lower surface of the cell stack 100 formed of the pouch type battery cells 110 may not have a smooth bottom surface due to the characteristics of the pouch type battery cells 110.
- the gap between the unit spacers 220 and the lower surface of the cell stack 100 may be eliminated by fabricating according to the shape of the lower surface of the 100.
- An adhesive is interposed between the cell stack 100 and the spacer 220 such that a cooling medium such as insulating oil does not leak between the cell stack 100 and the spacer 220, and the adhesive includes the cell stack 100.
- a cooling medium such as insulating oil
- the spacers 220 are coupled / fixed as well as function as a gasket.
- the spacer 220 may be formed of a plurality of unit spacers 220 spaced apart from each other.
- the spacer 220 as shown in FIG. 5, the first spacer 221 provided at one end in the longitudinal direction of the base plate 210, and the other side in the longitudinal direction of the base plate 210.
- the second spacer 222 and the first spacer 221 and the third spacer 222 spaced apart from the second spacer 222 may be provided between the end portion provided.
- the number of such unit spacers 220 is not limited to three illustrated in the drawings of the present invention, and two or more of them may be provided. That is, the third spacer 223 may be omitted, and one or more unit spacers 220 including the third spacer 223 are spaced apart from each other between the first spacer 221 and the second spacer 222. It is possible. However, hereinafter, a case in which three unit spacers 220 are three will be described for convenience of description.
- the unit spacers 220 extend in the width direction of the base plate 210, and both ends thereof are disposed to contact both side regions of the base plate 210, that is, the first side portion 211 and the second side portion 212. do.
- the cell stack 100 is placed on the unit spacers 220 so that the bottom surface thereof does not touch the surface of the base plate 210. Accordingly, predetermined empty spaces S1 and S2 are formed between the cell stack 100 and the base plate 210.
- the empty spaces S1 and S2 are examined.
- the empty spaces S1 and S2 are blocked by the cell stack 100 and the base plate 210, and the first and second spaces are blocked. It can be seen that the front and rear are blocked by the spacer 221 and the second spacer 222, and the left and right are blocked by the first side part 211 and the second side part 212.
- the empty spaces S1 and S2 may be partitioned into a first empty space S1 and a second empty space S2 by the third spacer 223.
- the third spacer 223 is a component that provides stable support to the cell stack 100 and may be added or subtracted according to the size of the battery cell 110.
- the first side portion 211 and / or the second side portion 212 of the base plate 210 are utilized as the cooling medium moving path for supplying the cooling medium to the empty spaces S1 and S2.
- the first side portion 211 and the second side portion 212 is formed in the hole along the longitudinal direction of the base plate 210 in the hole section 213 communicating with the empty spaces (S1, S2) It is provided.
- the hole section 213 has an opening O at a predetermined position, and communicates with the empty spaces S1 and S2 through which the cooling medium can penetrate into the empty spaces S1 and S2. have.
- the hole section 213 includes a first section 213a, a third section 213c, and a second side section 212 formed in the first side surface portion 211. It includes a second section 213b formed in.
- the first section 213a is a flow path section extending from the inlet of the hole section 213 to one side of the first empty space S1 located between the first spacer 221 and the third spacer 223.
- the cooling medium introduced from the outside through the supply pipe 230 moves along the first section 213a and seeps into the first empty space S1 through the opening of the first section 213a.
- the second section 213b is a flow path section extending from the first empty space S1 to the second empty space S2 positioned between the third spacer 223 and the second spacer 222. Two openings O in the second section are formed to face the first empty space S1 and the second empty space S2.
- the second section 213b may be a flow path section for moving the cooling medium of the first empty space S1 to the second empty space S2 by bypassing the third spacer 223.
- the third section 213c is a flow path section extending from the second empty space S2 to the exit of the hole section 213.
- the cooling medium of the second empty space S2 moves along the third section 213c and is discharged to the outside through the discharge pipe 240.
- the cooling medium is the supply pipe 230, the first section (213a), the first empty space (S1), the second section (213b), the second empty space (S2), the third The sequence 213c moves in order of the discharge pipe 240.
- the battery module 10 according to the exemplary embodiment of the present invention having such a cooling medium flow may have a higher cooling performance than that of the conventional battery by allowing the cooling medium to directly contact the battery cells 110.
- connection pipe may be connected to the inlet or the outlet of the hole section 213 to connect two battery modules 10 instead of the supply pipe 230 or the discharge pipe 240.
- a connection pipe may be connected to the inlet or the outlet of the hole section 213 to connect two battery modules 10 instead of the supply pipe 230 or the discharge pipe 240.
- a plurality of battery modules 10 are connected to form a battery pack (not shown)
- one battery module 10 is different from an outlet of the hole section 213 of one battery module 10. It is also possible to connect the inlet of the hole section 213 of the joint.
- the first spacer 221, the second spacer 222, and the third spacer 223 each include a flow path formed through the inside of the cooling medium to pass therethrough.
- Flow paths corresponding to the first spacer 221 to the third spacer 223 are referred to as a first spacer flow path 221a, a second spacer flow path 222a, and a third spacer flow path 223a.
- a plurality of first spacer flow passages 221a to 223a may be formed.
- the first cooling pipe 250 is installed in front of the first spacer 221, the second cooling is installed behind the second spacer 222.
- the pipe 260 may further include.
- the first cooling pipe 250 individually separates each of the hole sections 213 formed at one end of the first side surface portion 211 and the plurality of first spacer flow paths 221a exposed in front of the first spacer 221. It is provided in the form of connecting. As a result, the cooling medium may flow into the first empty space S1 through the supply pipe 230, the hole section 213, and the first cooling pipe 250, passing through the first spacer flow paths 221a.
- the second cooling pipe 260 individually separates each of the hole sections 213 formed at the other end of the first side surface portion 211 and the plurality of second spacer flow paths 222a exposed at the rear of the second spacer 222. It is provided in the form of connecting. According to this, the cooling medium may be discharged to the outside through the discharge pipe 240 through the second spacer flow path 222a in the second empty space S2 and through the second cooling pipe 260 and the hole section 213. have.
- the third spacer 223 is configured to allow the cooling medium flowing into the first empty space S1 through the first spacer flow path 221a to be directed to the second spacer 222. It may be provided in the form having a third spacer flow path (223a) formed through the inside.
- the cooling medium is the supply pipe 230, the front hole section 213, the first cooling pipe 250, the first spacer flow path (221a) , The first empty space S1, the third spacer flow paths 223a, the second empty space S2, the second cooling pipe 260, the rear hole section 213, and the discharge pipe 240 in order. It may be discharged to the outside of the battery module 10.
- the cooling medium may pass through the third spacer 223 without bypassing the third spacer 223, unlike the above-described embodiment, so that the second side portion 212 of the base plate 210 may not have the hole section 213.
- the hole section 213 may be formed relatively short as a connection passage between the supply pipe 230 / the first cooling pipe 250 or the second cooling pipe 260 / discharge pipe 240.
- the battery module 10 partially applies the spacer 220 between the cell stack 100 and the base plate 210, and thereby the cell stack 100 and the base.
- the cooling medium By allowing the cooling medium to be supplied to the empty spaces S1 and S2 formed between the plates 210, thereby allowing the cell stack 100 to directly contact the cooling medium, cooling efficiency may be maximized. .
- the battery module 10 according to the present invention is sealed to solve a problem of leakage / leakage that may occur when the liquid cooling medium such as the coolant insulating oil is directly contacted with the battery cell 110.
- the reliability of the product can be improved by applying a structure with enhanced properties.
- the battery pack according to an embodiment of the present invention implemented by electrically connecting a plurality of battery modules 10 described above, and in the case of a vehicle having such a battery pack, also retain the advantages of the battery module 10 as it is. It will be able to exhibit excellent performance.
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Abstract
Description
Claims (12)
- 복수의 배터리 셀이 적층되어 형성된 셀 적층체; 및상기 셀 적층체를 수용하며, 상기 셀 적층체의 하부, 양 측부, 전후방 및 상부를 각각 커버하는 하부 하우징, 한 쌍의 측부 하우징, 한 쌍의 전후방 하우징 및 상부 하우징으로 구성되는 모듈 하우징을 포함하며,상기 하부 하우징은,길이 방향에 따른 적어도 일 변 영역 내부에 유로를 형성하는 홀 구간을 가지며 상기 셀 적층체의 하면을 전체적으로 커버하는 베이스 플레이트; 및상기 베이스 플레이트에 미리 결정된 간격마다 배치되고 상기 셀 적층체를 상기 베이스 플레이트의 표면으로부터 이격되게 지지하여 상기 셀 적층체와 상기 베이스 플레이트 사이에 빈 공간을 형성시키는 복수 개의 스페이서를 포함하고,상기 홀 구간은 냉각 매체가 상기 빈 공간에 공급되게 상기 빈 공간과 연통하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 복수 개의 스페이서는,상기 베이스 플레이트의 길이 방향 일 측과 타 측에 각각 구비되고, 양단부가 상기 베이스 플레이트의 양변 영역에 접하게 상기 베이스 플레이트의 폭 방향을 따라 연장 형성된 제1 스페이서 및 제2 스페이서를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제2항에 있어서,상기 복수 개의 스페이서는,상기 제1 스페이서 및 제2 스페이서와 이격되어 그 사이에 구비되는 적어도 하나의 제3 스페이서를 더 포함하는 것을 특징으로 하는 배터리 모듈.
- 제3항에 있어서,상기 베이스 플레이트에서 상기 적어도 일 변 영역은 상호 대향하는 양변 영역에 해당하는 제1 측면부와 제2 측면부로 정의되고,상기 홀 구간은,상기 베이스 플레이트 외부에서 상기 제1 스페이서와 상기 제3 스페이서 사이에 위치한 제1 빈 공간까지 연통하게 상기 제1 측면부에 형성되는 제1 구간;상기 제1 빈 공간에서 상기 제3 스페이서와 상기 제2 스페이서 사이에 위치한 제2 빈 공간까지 연통하게 상기 제2 측면부에 형성되는 제2 구간; 및상기 제2 빈 공간에서 상기 베이스 플레이트 외부로 연통하게 상기 제1 측면부에 형성되는 제3 구간을 포함하는 것을 특징으로 하는 배터리 모듈.
- 제3항에 있어서,상기 제3 스페이서는,냉각 매체가 통과하도록 내부를 관통하여 형성되는 제3 스페이서 유로를 구비하는 것을 특징으로 하는 배터리 모듈.
- 제2항에 있어서,상기 제1 스페이서와 상기 제2 스페이서는 각각 내부를 관통하여 형성되는 제1 스페이서 유로와 제2 스페이서 유로를 구비하고,상기 홀 구간과 상기 제1 스페이서 유로를 연결하는 제1 쿨링 파이프; 및상기 홀 구간과 상기 제2 스페이서 유로를 연결하는 제2 쿨링 파이프를 더 포함하는 것을 특징으로 하는 배터리 모듈.
- 제2항에 있어서,상기 베이스 플레이트에서 상기 적어도 일 변 영역은 상호 대향하는 양변 영역에 해당하는 제1 측면부와 제2 측면부로 정의되고,상기 제1 및 제2 측면부는 상기 베이스 플레이트의 다른 부분보다 높게 형성되고, 상기 측부 하우징의 하단부에 하방으로 돌출 형성된 결합 돌기와 형합되게 마련된 결합 홈을 더 구비하는 것을 특징으로 하는 배터리 모듈.
- 제7항에 있어서,상기 제1 및 제2 측면부는 상기 셀 적층체의 최외곽 셀에 맞닿게 상기 셀 적층체를 향해 연장된 형태로 돌출된 누수 방지턱을 더 구비하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 셀 적층체와 스페이서 사이에는 상기 셀 적층체와 스페이서 사이로 냉각 매체가 누수되지 않도록 접착제가 개재되는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 베이스 플레이트의 홀 구간의 일측과 타측에 각각 연결되어 냉각 매체를 상기 빈 공간에 유출입시키는 공급관과 배출관을 더 포함하는 것을 특징으로 하는 배터리 모듈.
- 제1항 내지 제10항 중 어느 한 항에 따른 배터리 모듈이 복수 개 연결되어 구현되는 배터리 팩.
- 제11항에 따른 배터리 팩을 구비하는 자동차.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP19814466.9A EP3716392B1 (en) | 2018-06-08 | 2019-03-08 | Battery module having improved cooling structure |
| US16/767,457 US11811040B2 (en) | 2018-06-08 | 2019-03-08 | Battery module having improved cooling structure |
| CN201980005785.2A CN111373597B (zh) | 2018-06-08 | 2019-03-08 | 具有改进的冷却结构的电池模块 |
| ES19814466T ES3037355T3 (en) | 2018-06-08 | 2019-03-08 | Battery module having improved cooling structure |
| JP2020528094A JP7082665B2 (ja) | 2018-06-08 | 2019-03-08 | 改善された冷却構造を有するバッテリーモジュール |
| US18/372,864 US20240030517A1 (en) | 2018-06-08 | 2023-09-26 | Battery Module Having Improved Cooling Structure |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020180066302A KR102372348B1 (ko) | 2018-06-08 | 2018-06-08 | 개선된 냉각 구조를 갖는 배터리 모듈 |
| KR10-2018-0066302 | 2018-06-08 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US16/767,457 A-371-Of-International US11811040B2 (en) | 2018-06-08 | 2019-03-08 | Battery module having improved cooling structure |
| US18/372,864 Continuation US20240030517A1 (en) | 2018-06-08 | 2023-09-26 | Battery Module Having Improved Cooling Structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019235724A1 true WO2019235724A1 (ko) | 2019-12-12 |
Family
ID=68770909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2019/002747 Ceased WO2019235724A1 (ko) | 2018-06-08 | 2019-03-08 | 개선된 냉각 구조를 갖는 배터리 모듈 |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US11811040B2 (ko) |
| EP (1) | EP3716392B1 (ko) |
| JP (1) | JP7082665B2 (ko) |
| KR (1) | KR102372348B1 (ko) |
| CN (1) | CN111373597B (ko) |
| ES (1) | ES3037355T3 (ko) |
| HU (1) | HUE072419T2 (ko) |
| WO (1) | WO2019235724A1 (ko) |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR102372348B1 (ko) | 2022-03-07 |
| JP2021504888A (ja) | 2021-02-15 |
| JP7082665B2 (ja) | 2022-06-08 |
| US20240030517A1 (en) | 2024-01-25 |
| HUE072419T2 (hu) | 2025-11-28 |
| ES3037355T3 (en) | 2025-10-01 |
| CN111373597A (zh) | 2020-07-03 |
| EP3716392A4 (en) | 2021-03-17 |
| EP3716392B1 (en) | 2025-07-23 |
| US11811040B2 (en) | 2023-11-07 |
| KR20190139620A (ko) | 2019-12-18 |
| US20200395643A1 (en) | 2020-12-17 |
| EP3716392A1 (en) | 2020-09-30 |
| CN111373597B (zh) | 2023-11-24 |
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