[go: up one dir, main page]

WO2014024451A1 - Dispositif d'alimentation électrique, et véhicule électrique ainsi que dispositif d'accumulation électrique équipés de celui-ci - Google Patents

Dispositif d'alimentation électrique, et véhicule électrique ainsi que dispositif d'accumulation électrique équipés de celui-ci Download PDF

Info

Publication number
WO2014024451A1
WO2014024451A1 PCT/JP2013/004693 JP2013004693W WO2014024451A1 WO 2014024451 A1 WO2014024451 A1 WO 2014024451A1 JP 2013004693 W JP2013004693 W JP 2013004693W WO 2014024451 A1 WO2014024451 A1 WO 2014024451A1
Authority
WO
WIPO (PCT)
Prior art keywords
power supply
supply device
battery
fastening means
battery cell
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/JP2013/004693
Other languages
English (en)
Japanese (ja)
Inventor
一広 藤井
小村　哲司
光俊 田嶋
高志 瀬戸
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of WO2014024451A1 publication Critical patent/WO2014024451A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0481—Compression means other than compression means for stacks of electrodes and separators
    • 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
    • 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
    • H01M10/6554—Rods or plates
    • 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
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • 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

  • the present invention relates to a power supply device in which a plurality of batteries are connected, and an electric vehicle and a power storage device including the power supply device, and more particularly, the vehicle is mounted on an electric vehicle such as a hybrid vehicle, a fuel cell vehicle, an electric vehicle, and an electric motorcycle.
  • the present invention relates to a power supply device for a motor, or a power supply device for supplying power to a large-current power supply used for household or factory power storage applications, an electric vehicle including the power supply device, and a power storage device.
  • a power supply device including a plurality of battery cells is used for a power supply device for a vehicle such as a hybrid vehicle or an electric vehicle, or for a power storage system for a factory or a home.
  • a large number of battery cells are connected in series and / or in parallel to improve output (see, for example, Patent Document 1).
  • these battery cells are stacked by interposing a spacer 205 between the battery cells 201 to form a battery stack. Further, both end surfaces of the battery stack are covered with an end plate 203, and the end plates 203 are fastened with a bind bar 204 to constitute a power supply device.
  • Such power supply devices tend to be charged and discharged with a large current in accordance with the recent demand for larger capacity.
  • a power supply device for a vehicle in order to increase the power supplied to a motor for running the vehicle, a large number of rechargeable secondary battery cells are connected in series as a battery block, and the output voltage of the battery block is increased. Yes.
  • This power supply device is discharged by supplying electric power to the motor while the vehicle is running, and is charged by a generator during regenerative braking of the vehicle.
  • the discharge current of the battery specifies the driving torque of the motor, and the charging current of the battery specifies the braking force for regenerative braking.
  • the battery cell of the power supply device for vehicles is discharged and charged with a large current.
  • a battery cell generates heat when charged and discharged, and the amount of heat generated increases as it is charged and discharged with a large current. For this reason, it is required to efficiently cool the power supply device.
  • a portion that fixes the power supply device 2100 in which the battery cells 2101 are stacked is a member having excellent heat conduction, such as a metal plate MP (for example, a vehicle chassis in an in-vehicle application)
  • a metal plate MP for example, a vehicle chassis in an in-vehicle application
  • the metal plate MP is cooled by heat exchange at the contact interface with the metal plate MP.
  • the structure fixed to the cooling plate provided with the cooling function and heat-exchanging is also considered.
  • the power supply device can be cooled more efficiently by circulating the refrigerant inside the cooling plate to increase the cooling capacity of the cooling plate.
  • the bottom surface of the power supply device is a heat radiation surface, and the heat radiation is exchanged with the heat radiation surface, so that the bottom surface of the power supply device can be cooled.
  • the upper surface of the power supply device includes many members that generate heat.
  • FIG. 22 is a perspective view showing the appearance of the battery cell 2201
  • FIG. 23 is a vertical sectional view of the battery cell 2201
  • FIG. 24 is an exploded sectional view of the battery cell 2201 of FIG. 25 is an exploded perspective view showing a state where the current collector is inserted into the outer can 2201a
  • FIG. 26 is an exploded perspective view showing a state where the wound electrode of FIG. 25 is fixed to the current collector connecting portion
  • FIG. FIG. 28 is a perspective view showing a state where the tab fixing portion is bent from the state of FIG. 27, respectively.
  • each battery cell 2201 includes a rectangular outer can 2201a whose upper surface is opened and a sealing plate 2201b which closes the opening.
  • the sealing plate 2201b is provided with a pair of output terminals 2215 and a gas exhaust valve 2211.
  • the battery cell 2201 includes an internal electrode 2234 and an internal electrode connection portion 2236 for connecting the internal electrode 2234 and the output terminal 2215.
  • the output terminals 2215 of adjacent battery cells 2201 are connected to each other via a bus bar.
  • the bus bar since there is a connection resistance between the bus bar and the output terminal 2215, charging / discharging with a large current is performed. Generates Joule heat.
  • heat is generated by energization in each battery cell 2201.
  • the internal electrode connection portion 2236 inserted into the outer can 2201a is bent in a U shape when viewed from the side and fixed to the internal electrode 2234.
  • the internal electrode connecting portion 2236 is partially formed with a notch 2236c for bending so that it can be bent without difficulty.
  • the strip-like internal electrode connecting portion 2236 has a high electrical resistance value at the portion where the bending notch 2236c is provided, and therefore when the current concentrates on this portion, the amount of heat generation increases.
  • the internal electrode connection portion 2236 has a strip shape and a small thickness, and thus has a low electric resistance in terms of the shape.
  • the bent portion of the internal electrode connection portion 2236 is disposed on the back side of the sealing plate 2201b inside the battery cell 2201 as shown in FIGS. 23 to 28, the upper portion inside the battery cell 2201 is energized. Will generate heat. In this case, in the configuration in which heat is radiated from the bottom surface side of the battery cell 2201, it is far from the heat source, and there is a possibility that effective heat radiation cannot be achieved.
  • the battery cell 2201 is provided with a current interrupt mechanism (Current Interrupt Device: hereinafter referred to as “CID”) 2230 for interrupting current when the internal pressure of the outer can 2201a becomes abnormally high. ing.
  • the current interruption mechanism 2230 is interposed between the internal electrode connection portion 2236 and the output terminal 2215.
  • not only the folding notch 2236c but also the current interruption mechanism 2230 and the like generate heat when energized.
  • the vicinity of the upper surface generates heat inside the battery cell 2201, and heat dissipation from the lower surface is effective. There was a structural problem that was difficult to expect.
  • the upper surface side of the battery cell 2201 as shown in FIG.
  • a main object of the present invention is to provide a power supply device capable of effectively radiating heat even at a location away from the heat radiating surface such as the upper surface side of a battery cell, an electric vehicle including the same, and a power storage device. is there.
  • a plurality of battery cells having a rectangular outer shape, and an end plate that covers each end surface of the battery stack in which the plurality of battery cells are stacked,
  • a power supply device including fastening means for fastening the end plates to each other on the top surface of the battery stack, the battery cells being open on one side.
  • a bottom box-shaped outer can a sealing plate for closing the opening of the outer can, a pair of output terminals protruding from the surface of the sealing plate, an internal electrode housed in the outer can, and the internal electrode And an inner electrode connecting portion for connecting to the output terminal on the inner surface side of the sealing plate, and the bottom surface of the battery stack is in contact with a portion for fixing the power supply device to exchange heat. It has a heat dissipation surface, front Fastening means can be constituted by a member having a heat dissipation property.
  • the effect of improving the heat dissipation performance particularly on the upper surface of the battery cell can be expected by using the fastening structure of the battery stack also for heat dissipation of the battery cell.
  • a plurality of the fastening means are provided above and below the battery stack, and the surface area of the fastening means arranged above the battery stack is arranged below. It can be larger than the surface area of the fastening means.
  • the output terminal and the internal electrode connection portion are connected on the inner surface side of the sealing plate, and the internal electrode connection portion is formed in a strip shape, It is bent so as to have a shape, and a notch for bending whose width is partially narrowed can be provided in the bent portion of the internal electrode connecting portion.
  • the battery stack can be fastened on a plurality of surfaces to increase mechanical strength and improve reliability.
  • each battery cell further includes a current interrupting mechanism that interrupts current in response to an increase in internal pressure of the outer can, and on the back side of the sealing plate, A current interruption mechanism can be arranged.
  • the end plate can open a through hole for fixing the bottom surface of the battery stack by screwing with a portion for fixing the power supply device.
  • the fastening means can be constituted by a bind bar obtained by bending a metal plate into a U-shape in a cross-sectional view.
  • each battery cell is provided with a gas discharge valve that opens on the upper surface in response to the internal gas becoming high pressure
  • the power supply device further includes: A gas duct fixed so as to communicate with the gas discharge valve is provided at a position corresponding to each gas discharge valve, and the fastening means can be used also as a member for fixing the gas duct to the upper surface of the battery stack.
  • the fastening means can also be used as a gas duct fixing mechanism in addition to fastening battery cells and improving heat dissipation, reducing the number of parts constituting the power supply device, simplifying the configuration and reducing cost Can also contribute.
  • the electric vehicle includes a traveling motor supplied with power from the power supply device, a vehicle main body on which the power supply device and the motor are mounted, and wheels that are driven by the motor and cause the vehicle main body to travel. .
  • the power storage device includes a power supply controller that controls charging / discharging of the power supply device, and the power supply controller enables charging of the power supply device with electric power from the outside. It can be controlled to charge.
  • FIG. 5A is a schematic diagram showing a state in which the current interruption mechanism is in a normal state
  • FIG. 5A is a schematic diagram showing a state in which the current interruption mechanism is in a normal state
  • FIG. 5A is a schematic diagram showing the state before bending of an internal electrode connection part. It is a perspective view which shows the state which bent the tab fixing
  • FIG. 2 is a vertical sectional view showing a state where the power supply device of FIG. 1 is fixed to a fixed object. It is a perspective view of the power supply device which concerns on Example 1 of this invention.
  • FIG. 11 is a cross-sectional view of the power supply device shown in FIG. 10 taken along the line XI-XI.
  • FIG. 11 is a partially enlarged cross-sectional view corresponding to a cross section taken along line XII-XII of the power supply device illustrated in FIG. 10. It is the perspective view which looked at the power supply device of FIG. 10 from diagonally downward.
  • FIG. 14B is a further exploded perspective view of the power supply device of FIG. 14A. It is a disassembled perspective view of the electrical laminated body shown to FIG. 14B. It is a perspective view which shows a battery cell. It is a block diagram which shows the example which mounts a power supply device in the hybrid vehicle which drive
  • FIG. 24 is an exploded cross-sectional view of the battery cell of FIG. 23 with the current collector removed. It is a disassembled perspective view which shows the state which inserts a collector into an exterior can. It is a disassembled perspective view which shows the state which fixes the winding electrode of FIG. 25 with a collector connection part. It is a perspective view which shows the state before bending of an internal electrode connection part. It is a perspective view which shows the state which bent the tab fixing
  • the embodiment described below exemplifies a power supply device for embodying the technical idea of the present invention, an electric vehicle including the power supply device, and a power storage device, and the present invention is a power supply device and an electric motor including the power supply device.
  • the vehicle and the power storage device are not specified as follows.
  • the member shown by the claim is not what specifies the member of embodiment.
  • the dimensions, materials, shapes, relative arrangements, and the like of the constituent members described in the embodiments are not intended to limit the scope of the present invention only to the description unless otherwise specified. It's just an example.
  • each element constituting the present invention may be configured such that a plurality of elements are constituted by the same member and the plurality of elements are shared by one member, and conversely, the function of one member is constituted by a plurality of members. It can also be realized by sharing.
  • the contents described in some examples and embodiments may be used in other examples and embodiments.
  • a power supply device 100 shown in these drawings covers a plurality of battery cells 1, spacers 15 interposed between the battery cells 1, and respective end surfaces of the battery stack 2 in which the battery cells 1 are stacked.
  • An end plate 3 and fastening means 5 for fastening the end plates 3 to each other are provided.
  • Each battery cell 1 is a secondary battery cell having a rectangular outer shape. Insulating spacers 15 are interposed between the battery cells 1.
  • an end plate 3 is provided on each end surface of the battery stack 2 in which the battery cells 1 and the spacers 15 are alternately stacked. Then, the end plates 3 are fixed by the fastening means 5.
  • the fastening means 5 is extended in the stacking direction of the battery cells 1 on the upper surface of the battery stack 2. (Battery cell 1)
  • FIG. 3 is a perspective view of the battery cell 1 according to Embodiment 1
  • FIG. 4 is a vertical sectional view thereof.
  • the battery cell 1 shown in these drawings has a rectangular shape whose outer shape is rectangular and whose thickness is smaller than the lateral width.
  • the battery cell 1 includes a bottomed cylindrical outer can 1a that forms the outer shape of the battery cell 1, an internal electrode 34 housed inside the outer can 1a, an insulating cover 38 that covers the periphery of the internal electrode 34, A sealing plate 10 that closes the opening of the outer can 1a with the internal electrode 34 inserted into the outer can 1a is provided.
  • the upper surface of the outer can 1a is opened, and the opening is airtightly closed by the sealing plate 10.
  • the outer can 1a is a metal case having excellent thermal conductivity. For example, it is formed by squeezing an aluminum plate.
  • the sealing plate 10 is formed in a size that can close the opening of the outer can 1a. In the example of FIG. 3 etc., it comprises a rectangular plate.
  • the sealing plate 10 is provided with a pair of output terminals 13 for taking out the output of the battery cell 1.
  • the gas exhaust port 12 of the gas exhaust valve 11 which opens when the pressure inside the armored can 1a exceeds a predetermined value is provided.
  • the gas discharge port 12 of the gas discharge valve 11 is disposed at the center of the sealing plate 10, and the output terminals 13 are disposed on the left and right, respectively.
  • the sealing plate 10 is fixed to the outer can 1a by laser welding or the like.
  • an internal electrode connecting portion 36 for fixing the internal electrode 34 is fixed to the bottom surface side of the sealing plate, that is, the inner surface side of the outer can 1a. (Current interruption mechanism 30)
  • the battery cell 1 is provided in the outer can 1a and includes a current interrupt mechanism 30 that interrupts current in response to an increase in internal pressure.
  • the battery cell 1 shown in the perspective view of FIG. 3 includes a current interruption mechanism 30 at a portion indicated by a broken line in the drawing.
  • a specific example of the current interrupt mechanism 30 is shown in the schematic cross-sectional views of FIGS. 5A to 5B.
  • the current interruption mechanism 30 is connected between the internal electrode connection portion 36 connected to the internal electrode 34 and the output terminal 13 fixed to the sealing plate 10. .
  • the current interruption mechanism 30 in the ON state connects the internal electrode connection part 36 to the output terminal 13. When the current interruption mechanism 30 is turned off, the internal electrode connection portion 36 is not connected to the output terminal 13 and the current of the battery cell 1 is interrupted.
  • FIG. 5A shows a state where the current interruption mechanism 30 does not cut off the current
  • FIG. 5B shows a state where the current is cut off.
  • the current interrupt mechanism 30 shown in these drawings includes a deformed metal plate 31 that is deformed by the internal pressure of the battery cell 1 and a connection metal 32 that is formed by welding and locally connecting local portions of the deformed metal plate 31.
  • the current interrupting mechanism 30 deforms the deformed metal plate 31 with pressure as shown in FIGS. Separate and cut off current.
  • the deformed metal plate 31 of the current interruption mechanism 30 shown in the figure is a diaphragm that is processed to be curved in an arch shape.
  • the outer peripheral portion is connected to the lower end of the output terminal 13 fixed to the sealing plate 10, and the protruding portion is welded to the connection metal 32 to be electrically connected.
  • the connection metal 32 is connected to the internal electrode connection portion 36.
  • the current interruption mechanism 30 is turned on when the diaphragm is connected to the connection metal 32.
  • the current interruption mechanism 30 shown in the figure accommodates the diaphragm and the connecting metal 32 in an inner case 33 made of an insulating material such as plastic.
  • the inner case 33 communicates the lower surface of the diaphragm to the inside of the battery cell 1 and hermetically seals the upper surface of the diaphragm.
  • the internal pressure of the battery cell 1 does not act on the top surface of the diaphragm that is hermetically sealed.
  • the current interruption mechanism 30 having this structure applies the internal pressure of the battery cell 1 to the lower surface of the diaphragm, and pushes up the diaphragm with the internal pressure.
  • the pushing force of the diaphragm increases in proportion to the internal pressure of the battery cell 1. Therefore, when the internal pressure of the battery cell 1 rises, the diaphragm is pushed upward and deformed from the state shown in FIG. 5A as shown in FIG. 5B.
  • the diaphragm When the diaphragm is deformed to the state shown in FIG. 5B, the diaphragm is separated from the connection metal 32 to cut off the current of the battery cell 1.
  • the diaphragm deformed to the state shown in FIG. 5B is held in this shape, is held in a state of interrupting current, that is, in an OFF state, and does not return to the ON state. Therefore, the current interruption mechanism 30 interrupts the current when the internal pressure of the battery cell 1 becomes higher than the set pressure, and then holds the current in a state of interrupting the current.
  • the current interrupting mechanism 30 may be provided on either the positive electrode side or the negative electrode side of the battery cell 1, but is preferably provided on the positive electrode side of the battery cell.
  • the positive electrode is generally made of aluminum and the negative electrode is made of copper. For this reason, the current interruption mechanism can be easily mounted by providing the current interruption mechanism on the positive electrode side which is easy to machine. (Internal electrode connection part 36)
  • the internal electrode connection part 36 electrically connects the internal electrode 34 and the output terminal 15, takes out the current generated in the internal electrode 34 to the outside, and gives electric power to the internal electrode 34 during charging, so that the metal ion The battery is charged by moving. Further, the internal electrode connection part 36 also has a function of physically hanging the internal electrode 34 inside the outer can 1a. As shown in the perspective view of FIG. 6, the internal electrode connecting portion 36 has a substantially T-shaped outer shape, a sealing plate fixing portion 36 a for fixing to the sealing plate 10 at the center, and internal electrodes 34 on the left and right sides thereof. Tab fixing portions 36b for fixing the current collecting tabs 35 are provided. As shown in the perspective view of FIG.
  • the internal electrode connecting portion 36 is bent in a U shape at the boundary portion between the sealing plate fixing portion 36a and the tab fixing portion 36b. Further, a folding notch 36c is formed at the boundary between the sealing plate fixing part 36a and the tab fixing part 36b so that the tab fixing part 36b can be easily bent. In addition, it can replace with the notch for bending, and can also make thin the boundary part of a sealing board fixing
  • the bent tab fixing portions 36b are opposed to each other in a substantially parallel posture, and as shown in the exploded perspective view of FIG. 8, the current collecting tabs 35 are sandwiched and fixed therebetween.
  • the internal electrode connecting portion 36 for suspending the internal electrode 34 can be efficiently arranged inside the outer can 1a.
  • the current collecting tab 35 can be made thinner than the thickness of the internal electrode 34, even if the tab fixing portion 36b is arranged on the surface of the current collecting tab 35, it is not necessary to increase the thickness of the outer can 1a. . Thereby, it is possible to fix the internal electrode 34 without increasing the external shape of the battery cell 1.
  • the opening for fixing with the output terminal 15 is provided in the sealing board fixing
  • the two internal electrode connecting portions 36 are fixed in the vicinity of the end portion of the sealing plate 10 on the back surface side of the sealing plate 10.
  • the sealing plate fixing portion 36a is fixed to the sealing plate 10 by welding or the like, and the hole opened in the sealing plate 10 and the opening portion of the sealing plate fixing portion 36a are matched to allow the output terminal 15 to be inserted. (Current interruption mechanism 30)
  • a current interrupt mechanism 30 can be disposed between one of the internal electrode connecting portions 36 and the sealing plate 10.
  • the current interruption mechanism 30 is an element for stopping the output of the battery cell 1 in response to some abnormality of the battery cell 1. For example, it operates when the pressure in the battery cell 1 reaches a predetermined value or more, and the electrical connection between the output terminal 15 and the internal electrode connection portion 36 is interrupted.
  • a CID Current Interrupt Device
  • the length of the tab fixing portion 36 b is shortened by the thickness of the current interruption mechanism 30.
  • the current interruption mechanism 30 is provided on the internal electrode connection portion 36 on the right side (positive electrode terminal side), but may be provided on the left side (negative electrode terminal side). Or it can also provide in both internal electrode connection parts. (Fastening means 5)
  • the fastening means 5 is extended in the stacking direction of the battery cells 1 and is disposed on the upper surface of the battery stack 2 to fasten the end plates 3 to each other.
  • the fastening means 5 is configured by a bind bar obtained by bending a metal plate into a U-shape in a vertical sectional view.
  • a screw hole is provided in the bent piece obtained by bending the edge of the bind bar, and the screw bar is screwed together with the screw hole opened in the upper part of the end plate 3.
  • the fastening means can also be used as a fixing mechanism for the gas duct 6. That is, the gas duct 6 is provided at a position corresponding to a gas discharge valve provided in each battery cell that opens in response to the internal gas becoming high pressure. The gas duct 6 is fixed on the upper surface of the battery stack 2 so as to communicate with each gas discharge valve. The gas duct 6 can be fixed so as to cover the periphery of the gas duct 6 with fastening means. By doing so, the fastening means can be used not only for fastening the battery cells but also as a fixing mechanism for the gas duct 6, reducing the number of parts constituting the power supply device, and simplifying the construction to realize cost reduction. it can. (Embodiment 2)
  • the fastening means 5 '' shown in this figure is provided with a plurality of metal radiating fins 5a at a predetermined interval on the upper surface side.
  • the height of the radiating fins 5a is a gas duct 6 that is fixed to the upper surface of the battery stack 2. Therefore, it is possible to avoid the situation where the height of the battery stack is increased and the outer shape of the power supply device is increased by suppressing the amount of protrusion to the upper surface. (Additional fastening means 4)
  • the power supply apparatus of FIG. 2A is provided with the additional fastening means 4 which is a member separate from the fastening means 5 on the side surface of the battery stack 2.
  • the additional fastening means 4 which is a member separate from the fastening means 5 on the side surface of the battery stack 2.
  • the power supply device 100 has its lower surface fixed to a predetermined position of the fixed object OB. Thereby, the bottom surface of the battery stack 2 is brought into contact with the fixed object OB to be thermally coupled so that heat can be exchanged for heat dissipation.
  • the battery stack 2 has a bottom surface as a bottom heat dissipation surface for heat dissipation.
  • the power supply device 100 is fixed by inserting a through screw 40 through a through hole 39 that is opened on the upper surface of the end plate 3 and penetrates the end plate 3, and screwing the fixing object OB. It is done by combining.
  • interval of the end plates 3 is also prescribed
  • the fastening means 5 and the additional fastening means 4 even when the end plate 3 is fixed, the clamping state can be maintained so that the battery cell 1 does not expand.
  • the battery stack 2 can be sandwiched by the end plate 3 on the bottom surface side in this way, the number of fastening means 5 can be reduced compared to the top surface side.
  • the fastening means 5 and the additional fastening means 4 described above are made of a highly thermally conductive material having heat dissipation.
  • the heat dissipation can be improved even on the upper surface of the battery stack distant from the bottom heat dissipation surface. That is, while the bottom surface of the battery cell can be expected to effectively radiate heat from the bottom heat dissipation surface, there is no such heat dissipation surface on the upper surface side of the battery cell, and it is relatively far from the bottom heat dissipation surface. Heat dissipation is inferior compared to the side.
  • an internal electrode connecting portion, a current interruption mechanism, and the like are arranged in addition to the output terminal, and therefore, the temperature is likely to be higher than that on the bottom surface side due to heat generated by these members.
  • the internal electrode connection portion 36 fixed to the sealing plate also in the battery cell has a bending notch 36c that is partially narrowed or thinned to facilitate folding. Therefore, the electrical resistance increases at this portion, and heat is generated by charging and discharging.
  • a plurality of fastening means 5 are provided, and the surface area of the fastening means 5 arranged above the battery stack 2 is made larger than the surface area of the fastening means 5 arranged below.
  • the heat dissipating performance of the fastening means 5 can be made to differ between the upper and lower sides of the battery, thereby contributing to the correction of nonuniform heat dissipation performance.
  • the structure for fastening the battery stack 2 can also be used for the heat dissipation of the battery cell 1, and the effect of improving the heat dissipation performance especially on the upper surface of the battery cell can be expected.
  • FIG. 10 is a perspective view of the power supply apparatus 1000
  • FIG. 11 is a cross-sectional view taken along line XI-XI of the power supply apparatus 1000 in FIG. 10
  • FIG. 12 corresponds to a cross section taken along line XII-XII of the power supply apparatus 1000 in FIG. 13 is a partially enlarged cross-sectional view
  • FIG. 13 is a perspective view of the power supply device 1000 of FIG. 10 as viewed obliquely from below
  • FIG. 14A is an exploded perspective view of the power supply device of FIG.
  • FIG. 10 is an exploded perspective view of the battery stack 2
  • FIG. 16 is a perspective view of the battery cell 1.
  • the power supply apparatus 1000 shown in these drawings is suitable mainly for the power source of an electric vehicle such as a hybrid vehicle that travels by both an engine and a motor and an electric vehicle that travels by only a motor.
  • the power supply device of the present invention can be used for vehicles other than hybrid vehicles and electric vehicles, or can be used for applications requiring high output other than electric vehicles.
  • a power supply apparatus 1000 shown in FIGS. 10 to 16 includes a plurality of battery cells 1 in which a gas discharge port 12 having a gas discharge valve 11 is provided in a sealing plate 10, and a battery stack formed by stacking these battery cells 1. 2 and a gas duct 6 fixed on one surface of the battery stack 2 so as to be connected to the gas discharge port 12 of each battery cell 1. Furthermore, the power supply apparatus 1000 includes an end plate 3 disposed on both end faces of the battery stack 2 and an additional fastening means that is fixed to the end plate 3 and fastens the battery stack 2 in the stacking direction via the end plate 3. 4 is provided.
  • the additional fastening means 4 is further fixed to the end plate 3 so as to be arranged on one surface of the battery stack 2 and to the surface to which the gas duct 6 is fixed.
  • Fastening means 5 for fastening the laminated body 2 in the laminating direction is provided.
  • the gas duct 6 is disposed at a fixed position of the battery stack 2 via the fastening means 5.
  • a power supply apparatus 1000 shown in FIGS. 10 to 16 is a battery stack 2 in which a plurality of battery cells 1 having a rectangular outer shape are stacked.
  • Each battery cell 1 has a rectangular outer can 1a, and is provided with a gas discharge valve 11 for discharging gas generated inside the outer can 1a.
  • the battery cell 1 is provided with a gas discharge port 12 for discharging gas from the gas discharge valve 11 on the surface of the outer can 1a.
  • a plurality of battery cells 1 are stacked in a posture in which the sealing plate 10 is disposed on substantially the same surface, and a plurality of gas discharge ports 12 are disposed on the first surface 2A.
  • the battery laminated body 2 has laminated
  • the battery cell 1 is a square battery that is wider than the thickness, that is, thinner than the width.
  • a plurality of the battery cells 1 are stacked in the thickness direction to form a battery stack 2.
  • Each battery cell 1 is a lithium ion secondary battery.
  • the battery cell may be a secondary battery such as a nickel metal hydride battery or a nickel cadmium battery.
  • the battery cell 1 of FIG. 15 is a battery having a rectangular shape with both wide surfaces, and the battery stack 2 is formed by laminating both surfaces to face each other.
  • Each battery cell 1 is provided with positive and negative output terminals 13 projecting from both ends of a sealing plate 10 on the upper surface, and a gas exhaust port 12 of a gas exhaust valve 11 is provided at the center.
  • the rectangular battery cell 1 has a sealing plate 10 that closes an opening of an outer can 1a in which a metal plate is pressed into a cylindrical shape that closes the bottom.
  • the sealing plate 10 is a flat metal plate, and its outer shape is the shape of the opening of the outer can 1a.
  • the sealing plate 10 is laser-welded and fixed to the outer peripheral edge of the outer can 1a to airtightly close the opening of the outer can 1a.
  • the sealing plate 10 fixed to the outer can 1a has positive and negative output terminals 13 fixed to both ends thereof, and a gas discharge port 12 is provided between the positive and negative output terminals 13.
  • a gas discharge valve 11 is provided inside the gas discharge port 12. (Insulation cover)
  • the surface of the outer can 1a is covered with an insulating cover.
  • the insulating cover can be composed of an insulating resin sheet or the like. As such a material, an inexpensive PET resin excellent in insulation can be used.
  • a heat shrinkable tube the surface of the outer can 1a can be easily covered using heat shrinkage.
  • the plurality of battery cells 1 to be stacked are connected in series and / or in parallel with each other by connecting positive and negative output terminals 13.
  • the power supply device connects positive and negative output terminals 13 of adjacent battery cells 1 in series and / or in parallel with each other via a bus bar 14.
  • a power supply device that connects adjacent battery cells in series can increase the output voltage by increasing the output voltage, and can connect adjacent battery cells in parallel to increase the charge / discharge current.
  • the battery stack 2 has spacers 15 sandwiched between stacked battery cells 1.
  • the spacer 15 insulates adjacent battery cells 1.
  • the spacer 15 shown in the figure is an insulating sheet.
  • a plastic sheet made of modified PPE can be used. Since the spacer 15 made of a plastic insulating sheet can be reduced in thickness, there is a feature that the entire length of the battery stack 2 can be shortened to make the whole compact.
  • a plastic molded into a plate shape can be used as the spacers.
  • the spacers can be stacked so that adjacent battery cells are not displaced as a shape in which the battery cells are fitted and arranged at a fixed position.
  • the spacer molded from plastic can cool the battery cell by providing a cooling gap on the surface for allowing a cooling gas such as air to pass through.
  • This structure can efficiently cool the battery cell outer can 1a directly by forcing air into the cooling gap.
  • the spacer formed of a plastic having a low thermal conductivity has an effect of effectively preventing thermal runaway of adjacent battery cells.
  • the outer can 1a can be made of a metal such as aluminum.
  • the battery stack does not necessarily need to interpose a spacer between the battery cells.
  • the battery cell outer cans are molded with an insulating material, or the outer periphery of the battery cell outer cans are covered with the insulating cover described above, or covered with an insulating paint, etc. It is because a spacer can be made unnecessary by insulating.
  • the battery stack without interposing a spacer between battery cells is a method of directly cooling using a refrigerant or the like without adopting an air cooling method in which cooling air is forced between the battery cells to cool the battery cells. Can be used to cool the battery cell. (End plate 3)
  • a pair of end plates 3 are disposed on both end faces of the battery stack 2, and the battery stack 2 is fastened by being sandwiched from both ends by the pair of end plates 3.
  • the end plate 3 is a quadrangle having the same shape and dimensions as the outer shape of the battery cell 1 and sandwiches the stacked battery stack 2 from both end faces.
  • the end plate 3 in FIG. 14B is entirely made of metal.
  • the metal end plate is strong as a whole, and can stably hold the battery stack from both ends.
  • the end plate can be entirely made of plastic, or can be reinforced by fixing a reinforcing bracket to a plastic main body.
  • the end plate 3 shown in the drawing is provided with fitting recesses 3A and 3B for the additional fastening means 4 and the fastening means 5 on the outer surface so that the additional fastening means 4 and the fastening means 5 can be fixed in place.
  • the end plate 3 shown in the figure has a connecting recess for fitting connecting portions 4B provided at both ends of the additional fastening means 4 to the corners of the four corners of the outer surface in order to fix the additional fastening means 4 in place.
  • 3A is provided.
  • the shape of the fitting recess 3A is such that the connecting portion 4B of the additional fastening means 4 can be fitted.
  • the end plate 3 is also provided with a fitting recess 3B for fitting the connecting portions 5B provided at both ends of the fastening means 5 to the upper end portion of the outer surface in order to place and fix the fastening means 5 in place. ing.
  • the end plate 3 shown in the figure has such a shape that the fitting recess 3B can be fitted into the connecting portion 5B of the fastening means 5.
  • the end plate 3 shown in the figure has female screw holes 3a and 3b for screwing set screws 18 and 19 for fixing both ends of the additional fastening means 4 and the fastening means 5 on the outer peripheral surface.
  • the end plate 3 shown in the figure has a female screw hole 3a through which a set screw 18 for fixing a pair of additional fastening means 4 arranged at the upper end portions of both side surfaces 2B of the battery stack 2 is inserted in the upper surface of the end plate 3. It is provided at the left and right ends.
  • the end plate 3 has female screw holes 3b through which set screws 18 for fixing a pair of additional fastening means 4 arranged at the lower end portions of the both side surfaces 2B of the battery stack 2 are formed on both side surfaces of the end plate 3.
  • the end plate 3 is provided with a female screw hole 3b through which a set screw 19 for fixing the fastening means 5 disposed on the first surface 2A of the battery stack 2 is inserted in the center of the upper surface of the end plate 3.
  • the above structure is a direction in which the axial direction of the set screws 18 and 19 screwed into the end plate 3 intersects the stacking direction of the battery stack 2. For this reason, in a state where the power supply device vibrates by receiving a force from the outside, the shearing force acting on the shaft portions of the set screws 18 and 19 screwed into the end plate 3 is reduced, and the set screws 18 and 19 are protected. A stronger connection strength can be realized. Further, there is a feature that the set screws 18 and 19 can be more firmly connected by making the entire length of the set screws 18 and 19 larger than the thickness of the end plate 3, that is, by extending the set screws 18 and 19. (Additional fastening means 4)
  • the additional fastening means 4 is extended in the stacking direction of the battery stack 2 as shown in FIGS. 10 and 13, and both ends are fixed to the end plate 3 to fasten the battery stack 2 in the stacking direction.
  • the additional fastening means 4 shown in the figure is disposed to face both side surfaces 2B different from the first surface 2A of the battery stack 2.
  • the structure in which the additional fastening means 4 is arranged and fastened on both side surfaces 2B of the battery stack 2 can more securely fasten the plurality of battery cells 1 in the stacking direction.
  • the fastening means is not necessarily arranged on both side surfaces of the battery stack.
  • the fastening means can be disposed on the top surface and the bottom surface in addition to the both side surfaces of the battery stack, or can be disposed only on the top surface and the bottom surface without being disposed on both side surfaces.
  • the additional fastening means 4 is a metal plate having a predetermined width and a predetermined thickness along the surface of the battery stack 2.
  • the additional fastening means 4 can be a metal plate such as iron, preferably a steel plate.
  • the additional fastening means 4 made of a metal plate is provided with connecting portions 4B that are connected to the end plate 3 at both ends of the binding portion 4A.
  • the additional fastening means 4 shown in the drawing is bent at substantially right angles at both ends along the outer surface of the end plate 3 to provide a connecting portion 4B.
  • the additional fastening means 4 is connected to the pair of end plates 3 arranged at both ends of the battery stack 2 by connecting the connecting portions 4B at both ends to the end plate 3.
  • the battery stack 2 is sandwiched from both ends so that the pair of end plates 3 are at a predetermined interval.
  • the connecting portion 4 ⁇ / b> B is connected to fitting recesses 3 ⁇ / b> A provided at the four corners of the end plate 3, and the pair of end plates 3 are connected by the four additional fastening means 4. Therefore, the connecting portion 4 ⁇ / b> B of the additional fastening means 4 is bent along the fitting recess 3 ⁇ / b> A of the end plate 3. Further, the additional fastening means 4 is fixed to the end plate 3 with set screws 18 at both ends thereof.
  • the additional fastening means 4 shown in the figure is provided with opening through holes into which set screws 18 are inserted at both ends of the binding portion 4A.
  • the additional fastening means 4 inserts a set screw 18 into the through hole in a state where the connecting portions 4B at both ends are connected to the fitting recess 3A of the end plate 3, and the set screw 18 is provided on the outer peripheral surface of the end plate 3. It is screwed into the female screw hole 3 a and fixed to the pair of end plates 3.
  • the connection portion 4B of the additional fastening means 4 is locked to the end plate 3 so that the connection is strong in the stacking direction of the battery stack 2 as well. Strength can be realized. Further, in this configuration, since the set screws 18 and 19 are not positioned in the stacking direction of the battery stack 2, it is possible to suppress an increase in size of the power supply device.
  • the above configuration can suppress the increase in size of the power supply device.
  • the additional fastening means 4 shown in FIGS. 11 and 14B is arranged at the corners of the four corners of the battery stack 2 with the cross-sectional shape of the binding portion 4A being L-shaped.
  • 4 A of bind parts of this shape can arrange
  • the fastening means does not necessarily need to have an L-shaped cross-sectional shape for all of the binding portions, and only the upper fastening means has an L-shaped cross-sectional shape and is arranged at the upper corner of the battery stack.
  • only the lower fastening means can be arranged in the lower corner portion of the battery stack with the L-shaped cross section.
  • the fastening means is not necessarily arranged along the corner portion of the battery stack, and can be arranged along both side surfaces of the battery stack or along both side surfaces and the bottom surface.
  • a fastening means can also be made into the plate shape in alignment with the side surface of a battery laminated body.
  • the plate-shaped main fixture can also open the opening. (Gas duct 6)
  • the gas duct 6 is a first surface which is the upper surface of the battery stack 2 in a posture facing the gas discharge port 12 of each battery cell 1 so as to guide the gas discharged from the gas discharge valve 11 to the outside of the power supply device. It is arranged on the surface 2A.
  • the gas duct 6 is designed to have sufficient strength so as not to be destroyed when high-pressure and high-temperature gas is discharged, and preferably made of a plastic excellent in heat resistance and chemical resistance, for example, made of polybutylene terephthalate. .
  • the gas duct can be made of plastic such as nylon resin or epoxy resin.
  • molds a gas duct with resin has the advantage that it is excellent in workability and there are few restrictions on a design.
  • the gas duct 6 shown in FIGS. 11 and 12 is formed in a hollow shape, and is a surface facing the battery stack 2 and at a position facing the gas discharge port 12 of each battery cell 1.
  • the connection opening 6b connected to is provided.
  • the gas duct 6 shown in the figure is provided with a columnar gas passage 46 inside, and gas discharged from the gas discharge port 12 of the battery cell 1 flows into the gas passage 46 through the connection opening 6b. Yes. (Duct discharge part 6x)
  • the gas duct 6 is provided with a duct discharge portion 6x that discharges the gas inside the gas duct 6 to the outside at one end.
  • the gas duct 6 shown in the drawing is formed as a duct discharge portion 6x by connecting a hollow pipe projecting from the upper surface to a cylindrical pipe communicating with an internal gas path 46.
  • an external gas discharge path GO is connected to the duct discharge portion 6x to discharge the gas flowing in from the gas duct 6 to the outside.
  • the bus bar holder 8 is disposed on the first surface 2 ⁇ / b> A of the battery stack 2, and the battery cells are stacked on each other by the bus bar holder 8. 1 sealing plate 10 is covered.
  • the bus bar holder 8 is formed in an outer shape along the upper surface of the battery stack 2.
  • the bus bar holder 8 is also used as the second duct 6B of the gas duct 6.
  • the bus bar holder 8 shown in the figure is provided with a plurality of connection openings 6b by using a portion facing the plurality of gas discharge ports 12 arranged at the center of the battery stack 2 as the second duct 6B. . Therefore, the bus bar holder 8 is formed of an insulating plastic such as nylon resin or epoxy resin.
  • the bus bar holder 8 is provided with an opening window 24 for disposing the bus bar 14 at a position facing the output terminal 13 of the battery cell 1.
  • the bus bar holder 8 in the figure is provided with a plurality of opening windows 24 along both sides of the battery stack 2 on both sides of the central portion constituting the second duct 6B.
  • the opening window 24 is sized and shaped along the outer shape of the bus bar 14 so that it can be connected to the output terminal 13 while guiding the bus bar 14 to a fixed position.
  • the bus bar 14 disposed in the opening window 24 of the bus bar holder 8 is fixed to the output terminal 13 of the battery cell 1 by welding such as laser welding, and connects the plurality of battery cells 1 to a predetermined connection state.
  • the power supply device does not necessarily need to arrange the bus bar holder on the first surface of the battery stack.
  • the bus bar holder 8 described above is fixed to the first surface of the battery stack 2 via fastening means 5 that connects the gas duct 6 to the battery stack 2.
  • the structure in which the bus bar holder 8 arranged on the first surface 2A of the battery stack 2 is also used as the gas duct 6 allows the gas duct 6 to be arranged easily and at low cost by reducing the number of parts. Further, the structure in which the bus bar holder 8 is also used as the second gas duct 6B connects the first gas duct 6A with the battery stack 2 fastened in advance through the additional fastening means 4 in the assembly process of the power supply device. Therefore, the first gas duct 6A can be more reliably connected to the second gas duct 6B in an airtight state.
  • the power supply device of the present invention can be disposed on the first surface of the battery stack without using the bus bar holder as a gas duct, with the gas duct as a separate member. (Fastening means 5)
  • the above gas duct 6 is disposed facing the gas discharge port 12 of the battery stack 2 and is fixed in place via the fastening means 5 disposed on the first surface 2A of the battery stack 2.
  • the fastening means 5 is disposed to face the first surface 2 ⁇ / b> A of the battery stack 2, and the gas duct 6 is disposed at a fixed position of the battery stack 2.
  • the fastening means 5 is also fastened to the end plate 3 at both ends, and fastens the battery stack 2 with the first surface 2A.
  • the fastening means 5 is a metal plate having a predetermined width and thickness, and a metal plate such as iron, preferably a steel plate can be used.
  • the fastening means 5 made of a metal plate is provided with connecting portions 5B that are connected to the outer surface of the end plate 3 at both ends of the binding portion 5A.
  • the fastening means 5 shown in the figure includes two rows of binding portions 5A and a connecting portion 5B formed by connecting both ends of these binding portions 5A.
  • Two rows of binding portions 5 ⁇ / b> A are arranged along both sides of the gas duct 6.
  • the two rows of binding portions 5A are arranged at predetermined intervals so that the flange portions 6a provided on both sides of the gas duct 6 can be pressed.
  • the fastening means 5 is fixed to the end plate 3 in a state where the gas duct 6 is disposed between the two rows of binding portions 5A, and presses the flange portion 6a with the two rows of binding portions 5A.
  • the two rows of binding portions 5A are connected at both ends by connecting portions 5B, and the connecting portions 5B are bent at substantially right angles and connected to the end plate 2.
  • the fastening means 5 connects the battery stack 2 from both ends by connecting the connecting portions 5B at both ends to the fitting recesses 3B provided on the end plate 3, with the pair of end plates 3 being set at a predetermined interval. Further, both ends of the fastening means 5 are fixed to the end plate 3 with set screws 19.
  • the fastening means 5 shown in the figure is provided with through holes into which set screws 19 are inserted at both ends of the binding portion 5A.
  • the fastening means 5 is a female in which a set screw 19 is inserted into the through hole in a state where the connecting portions 5B at both ends are connected to the fitting recess 3B of the end plate 3, and the set screw 19 is provided on the outer peripheral surface of the end plate 3. It is screwed into the screw hole 3b and fixed to the pair of end plates 3.
  • the fastening means 5 shown in the figure is integrally formed with two rows of binding portions 5A and connecting portions 5B at both ends, but the additional fastening means can also be divided into two. Although the additional fastening means divided into two is not shown, each can be arranged along both sides of the gas duct and can press the claws along the flanges protruding from both sides of the gas duct at each binding portion. .
  • the additional fastening means is not shown, it is also possible to connect two rows of binding portions with a bridging portion provided in the middle and arrange the bridging portion on the upper surface of the gas duct.
  • the additional fastening means can press the upper surface of the gas duct at the bridging portion and place the gas duct at a fixed position on the first surface of the battery stack.
  • the additional fastening means is not shown, it is also possible to provide a row of binding portions, press the upper surface of the gas duct with this binding portion, and place the gas duct at a fixed position on the first surface of the battery stack. it can. (Circuit board)
  • the power supply device shown in FIGS. 11 and 14B includes a circuit board 9 connected to the battery stack 2, and the circuit board 9 is located above the gas duct 6 and between the top cover 20. It is arranged.
  • the top cover 20 shown in the drawing is provided with a storage recess 21 for storing the circuit board 9 on the upper surface side, and the circuit board 9 is stored in the storage recess 21.
  • the circuit board 9 is mounted with an electronic component (not shown) that implements a protection circuit for the battery cell 1.
  • the circuit board 9 is mounted with a voltage detection circuit that detects the cell voltage connected to each battery cell 1, a temperature detection circuit that detects the temperature of the battery cell 1, etc. 1 is controlled so as to prevent overcharging and overdischarging, or charging / discharging is controlled so as to prevent an abnormal temperature rise of the battery cell 1.
  • Electronic components that realize these circuits are arranged on the circuit board 9 and stored in the storage recess 21.
  • the circuit board 9 shown in the figure is arranged at a fixed position on the upper surface of the gas duct 6 via the fastening means 5.
  • the fastening means 5 shown in FIGS. 11, 12, 14A and 14B has a plurality of nuts 26 fixed to the upper surface of the binding portion 5A in order to fix the circuit board 9.
  • a set screw 25 penetrating the circuit board 9 is screwed into a nut 26 provided in the fastening means 5, and the circuit board 9 is arranged at a fixed position on the upper surface of the gas duct 6.
  • the fastening means 5 made of a metal plate is disposed between the circuit board 9 and the battery stack 2, so that the circuit board 9 can be shielded from the battery stack 2 with the metal plate of the fastening means 5. Furthermore, since the power supply device has the metal layer 17 provided on the inner surface of the gas duct 6, the circuit board 9 can be shielded from the battery stack 2 by the metal layer 17.
  • the battery stack 2 is charged and discharged with a large current, and is charged and discharged with a particularly large pulse current, so that pulse noise is emitted.
  • the metal plate 17 of the fastening means 5 and the metal layer 17 of the gas duct 6 are located between the circuit board 9 and the battery stack 2 and shield the circuit board 9 from pulsed induced noise radiated from the battery stack 2.
  • the circuit board 9 has a feature that can prevent malfunction due to induction noise. In particular, the induction noise from the battery stack 2 can be more effectively shielded by connecting the additional fastening means, which is a metal plate, to the earth line. (Top cover)
  • the top cover 20 has a top cover 20 on the top surface.
  • the top cover 20 covers the upper surface of the bus bar holder 8 and covers and protects the bus bar 14 and the circuit board 9 connected to the battery stack 2. Therefore, the top cover 20 has an outer shape that can cover the upper surface of the bus bar holder 8 and is molded of plastic into a shape having a space in which the circuit board 9 can be accommodated.
  • the top cover 20 of FIG. 11 is formed into a shallow container shape with a lower opening as a whole, the central portion is formed one step deeper than the surroundings, and a storage recess 21 for storing the circuit board 9 is provided. .
  • the top cover 20 is provided with a notch portion 22 for projecting the duct discharge portion 6x of the gas duct 6 to the outside at one end portion.
  • the top cover 20 causes the duct discharge part 6 x to be exposed to the outside from the notch part 22 while being connected to the upper surface of the battery stack 2.
  • the top cover 20 shown in FIG. 10 has output terminal windows 23 at both ends.
  • the battery stack 2 has output terminal plates 16 connected to the output terminals 13 of the battery cells 1 arranged at both ends.
  • the top cover is provided with terminal windows 23 opened at both ends for exposing these output terminal plates 16 to the outside.
  • the above top cover 20 is fixed to the gas duct 6 via a set screw 27.
  • a connecting boss 28 is integrally formed on the upper surface in order to fix the top cover 20 at a fixed position.
  • 14A and 14B are provided so as to protrude from the upper surfaces of both end portions of the gas duct 6.
  • the top cover 20 has a through hole 29 at a position facing the connection boss 28, and a set screw 27 inserted through the through hole 29 is screwed into the connection boss 28 of the gas duct 6 to fix the battery stack 2. Fixed in position.
  • the power supply device provided with the top cover 20 can prevent the connection portion between the battery cells 1 having a high voltage, the circuit board 9 and the like from being exposed. For example, the battery is inadvertently used during maintenance. It is possible to prevent the circuit from being short-circuited by contacting the connection portion between the cells 1 or the circuit board 9 or the like. Also, a simple waterproof effect can be obtained.
  • the gas duct 6 is fixed to the first surface 2 ⁇ / b> A of the battery stack 2 via the fastening means 5.
  • the gas duct does not necessarily need to be fixed to the battery stack via additional fastening means, and can be fixed to the battery stack via another connection structure.
  • the cooling of the power supply device is performed, for example, by arranging a cooling plate on the bottom surface of the battery stack and transferring the heat to the cooling plate.
  • the cooling plate can be forcibly cooled by circulating a coolant inside the cooling plate, and can be efficiently cooled by heat exchange.
  • the battery stack may be fixed to the chassis of the car and naturally radiated by heat exchange with the chassis.
  • the fixing position of such a cooling plate etc. does not necessarily need to be made into the bottom face of a battery laminated body, and can also be made into other surfaces, such as a side surface.
  • it may be an air-cooling type in which cooling air is supplied to the battery cell.
  • the battery cell can be effectively air-cooled by providing the cooling air flow path in the spacer disposed between the battery cells as described above and flowing the cooling air therethrough.
  • the above power supply apparatus can be used as a vehicle-mounted power supply.
  • a vehicle equipped with a power supply device an electric vehicle such as a hybrid vehicle or a plug-in hybrid vehicle that runs with both an engine and a motor, or an electric vehicle that runs only with a motor can be used, and is used as a power source for these vehicles. . (Power supply for hybrid vehicles)
  • FIG. 17 shows an example in which a power supply device is mounted on a hybrid vehicle that runs with both an engine and a motor.
  • a vehicle HV equipped with the power supply device shown in this figure includes an engine 96 and a travel motor 93 that travel the vehicle HV, a power supply device 1000 that supplies power to the motor 93, and a generator that charges a battery of the power supply device 1000.
  • the power supply apparatus 1000 is connected to a motor 93 and a generator 94 via a DC / AC inverter 95.
  • the vehicle HV travels by both the motor 93 and the engine 96 while charging / discharging the battery of the power supply apparatus 1000.
  • the motor 93 is driven to drive the vehicle when the engine efficiency is low, for example, during acceleration or low-speed driving.
  • the motor 93 is driven by power supplied from the power supply apparatus 1000.
  • the generator 94 is driven by the engine 96, or is driven by regenerative braking when the vehicle is braked, and charges the battery of the power supply apparatus 1000.
  • FIG. 18 shows an example in which a power supply device is mounted on an electric vehicle that runs only with a motor.
  • a vehicle EV equipped with the power supply device shown in FIG. 1 is a motor 93 for running the vehicle EV, a power supply device 1000 that supplies power to the motor 93, and a generator 94 that charges a battery of the power supply device 1000.
  • the power supply apparatus 1000 is connected to a motor 93 and a generator 94 via a DC / AC inverter 95.
  • the motor 93 is driven by power supplied from the power supply apparatus 1000.
  • the generator 94 is driven by energy when regeneratively braking the vehicle EV and charges the battery of the power supply apparatus 1000. (Power storage device for power storage)
  • this power supply device can be used not only as a power source for moving bodies but also as a stationary power storage facility.
  • a power source for home and factory use a power supply system that is charged with sunlight or midnight power and discharged when necessary, or a streetlight power supply that charges sunlight during the day and discharges at night, or during a power outage It can also be used as a backup power source for driving signals.
  • FIG. The power supply apparatus 1000 shown in this figure forms a battery unit 82 by connecting a plurality of battery packs 81 in a unit shape. Each battery pack 81 has a plurality of battery cells connected in series and / or in parallel. Each battery pack 81 is controlled by a power controller 84.
  • the power supply apparatus 1000 drives the load LD after charging the battery unit 82 with the charging power supply CP. Therefore, the power supply apparatus 1000 has a charge mode and a discharge mode.
  • the load LD and the charging power source CP are connected to the power supply apparatus 1000 via the discharging switch DS and the charging switch CS, respectively.
  • ON / OFF of the discharge switch DS and the charge switch CS is switched by the power supply controller 84 of the power supply apparatus 1000.
  • the power controller 84 switches the charging switch CS to ON and the discharging switch DS to OFF to permit charging from the charging power supply CP to the power supply apparatus 1000.
  • the power controller 84 turns off the charging switch CS and turns on the discharging switch DS to discharge The mode is switched to permit discharge from the power supply apparatus 1000 to the load LD. Further, if necessary, the charge switch CS can be turned on and the discharge switch DS can be turned on to supply power to the load LD and charge the power supply apparatus 1000 at the same time.
  • the load LD driven by the power supply apparatus 1000 is connected to the power supply apparatus 1000 via the discharge switch DS.
  • the power supply controller 84 switches the discharge switch DS to ON, connects to the load LD, and drives the load LD with the power from the power supply apparatus 1000.
  • the discharge switch DS a switching element such as an FET can be used. ON / OFF of the discharge switch DS is controlled by the power supply controller 84 of the power supply apparatus 1000.
  • the power controller 84 also includes a communication interface for communicating with external devices. In the example of FIG. 19, the host device HT is connected in accordance with an existing communication protocol such as UART or RS-232C. Further, if necessary, a user interface for the user to operate the power supply system can be provided.
  • Each battery pack 81 includes a signal terminal and a power supply terminal.
  • the signal terminals include a pack input / output terminal DI, a pack abnormality output terminal DA, and a pack connection terminal DO.
  • the pack input / output terminal DI is a terminal for inputting / outputting signals from other pack batteries and the power supply controller 84
  • the pack connection terminal DO is for inputting / outputting signals to / from other pack batteries which are child packs.
  • the pack abnormality output terminal DA is a terminal for outputting the abnormality of the battery pack to the outside.
  • the power supply terminal is a terminal for connecting the battery packs 81 in series and in parallel.
  • the power supply device is suitably used as a power supply device for a plug-in hybrid electric vehicle, a hybrid electric vehicle, an electric vehicle, or the like that can switch between the EV traveling mode and the HEV traveling mode. it can.
  • a backup power supply that can be mounted on a rack of a computer server, a backup power supply for a wireless base station such as a mobile phone, a power supply for home use, a power supply for a factory, a power supply for a street light, etc. It can also be used as appropriate for applications such as backup power supplies for devices and traffic lights.
  • Exterior can 2201b ... Sealing plate 2211 ... Gas Discharge valve 2215 ... Output terminal 2230 ... Current cut-off mechanism 2234 ... Internal electrode 2236 ... Internal electrode connection part; 2236c ... Bending notch OB ... Fixed object GO ... Gas discharge path EV, HV ... Vehicle LD ... Load CP ... Charge Power supply DS ... Discharge switch CS ... Charge switch OL ... Output line HT ... Host device DI ... Pack input / output terminal DA ... Pack abnormal output terminal DO ... Pack connection terminal MP ... Metal plate

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
  • Secondary Cells (AREA)
PCT/JP2013/004693 2012-08-09 2013-08-02 Dispositif d'alimentation électrique, et véhicule électrique ainsi que dispositif d'accumulation électrique équipés de celui-ci Ceased WO2014024451A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012176720A JP2015187914A (ja) 2012-08-09 2012-08-09 電源装置及びこれを備える電動車両並びに蓄電装置
JP2012-176720 2012-08-09

Publications (1)

Publication Number Publication Date
WO2014024451A1 true WO2014024451A1 (fr) 2014-02-13

Family

ID=50067705

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/004693 Ceased WO2014024451A1 (fr) 2012-08-09 2013-08-02 Dispositif d'alimentation électrique, et véhicule électrique ainsi que dispositif d'accumulation électrique équipés de celui-ci

Country Status (2)

Country Link
JP (1) JP2015187914A (fr)
WO (1) WO2014024451A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015225703A (ja) * 2014-05-26 2015-12-14 本田技研工業株式会社 蓄電モジュール及びその固定構造
CN113169390A (zh) * 2018-11-29 2021-07-23 松下知识产权经营株式会社 蓄电模块
CN114583348A (zh) * 2020-11-30 2022-06-03 丰田自动车株式会社 电池组
CN115088130A (zh) * 2020-07-17 2022-09-20 东莞新能安科技有限公司 电芯模组及电池组
JPWO2024142476A1 (fr) * 2022-12-28 2024-07-04

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6696173B2 (ja) * 2015-12-24 2020-05-20 株式会社豊田自動織機 蓄電装置モジュールの製造方法
JP2018006276A (ja) * 2016-07-07 2018-01-11 カルソニックカンセイ株式会社 組電池及び電源装置
JP2018010832A (ja) * 2016-07-15 2018-01-18 株式会社豊田自動織機 蓄電装置
JP7058180B2 (ja) * 2018-06-01 2022-04-21 プライムアースＥｖエナジー株式会社 二次電池及び二次電池の製造方法
JP7338488B2 (ja) * 2020-01-23 2023-09-05 トヨタ自動車株式会社 電池
CN115298886B (zh) * 2020-03-23 2024-05-31 三洋电机株式会社 电池组件
JP7585857B2 (ja) * 2021-02-18 2024-11-19 スズキ株式会社 燃料電池ユニット、燃料電池ユニットの周辺機器収容部及び燃料電池ユニットの周辺機器収容ケース

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009134936A (ja) * 2007-11-29 2009-06-18 Sanyo Electric Co Ltd バッテリシステム
JP2009134938A (ja) * 2007-11-29 2009-06-18 Sanyo Electric Co Ltd バッテリシステム
JP2009134901A (ja) * 2007-11-28 2009-06-18 Sanyo Electric Co Ltd バッテリシステム
JP2010272520A (ja) * 2009-04-24 2010-12-02 Nissan Motor Co Ltd 組電池
JP2011175743A (ja) * 2010-02-23 2011-09-08 Sanyo Electric Co Ltd 電源装置及びこれを備える車両
JP2012109126A (ja) * 2010-11-17 2012-06-07 Toyota Motor Corp 蓄電装置
JP2012119158A (ja) * 2010-11-30 2012-06-21 Sanyo Electric Co Ltd 組電池とこれを装備する電動車両

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009134901A (ja) * 2007-11-28 2009-06-18 Sanyo Electric Co Ltd バッテリシステム
JP2009134936A (ja) * 2007-11-29 2009-06-18 Sanyo Electric Co Ltd バッテリシステム
JP2009134938A (ja) * 2007-11-29 2009-06-18 Sanyo Electric Co Ltd バッテリシステム
JP2010272520A (ja) * 2009-04-24 2010-12-02 Nissan Motor Co Ltd 組電池
JP2011175743A (ja) * 2010-02-23 2011-09-08 Sanyo Electric Co Ltd 電源装置及びこれを備える車両
JP2012109126A (ja) * 2010-11-17 2012-06-07 Toyota Motor Corp 蓄電装置
JP2012119158A (ja) * 2010-11-30 2012-06-21 Sanyo Electric Co Ltd 組電池とこれを装備する電動車両

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015225703A (ja) * 2014-05-26 2015-12-14 本田技研工業株式会社 蓄電モジュール及びその固定構造
CN113169390A (zh) * 2018-11-29 2021-07-23 松下知识产权经营株式会社 蓄电模块
CN115088130A (zh) * 2020-07-17 2022-09-20 东莞新能安科技有限公司 电芯模组及电池组
CN114583348A (zh) * 2020-11-30 2022-06-03 丰田自动车株式会社 电池组
CN114583348B (zh) * 2020-11-30 2024-05-10 丰田自动车株式会社 电池组
JPWO2024142476A1 (fr) * 2022-12-28 2024-07-04
WO2024142476A1 (fr) * 2022-12-28 2024-07-04 ビークルエナジージャパン株式会社 Bloc-batterie

Also Published As

Publication number Publication date
JP2015187914A (ja) 2015-10-29

Similar Documents

Publication Publication Date Title
JP6189301B2 (ja) 電源装置及びこれを備える電動車両並びに蓄電装置
JP6151254B2 (ja) 電源装置及びこれを備える電動車両並びに蓄電装置
WO2014024451A1 (fr) Dispositif d'alimentation électrique, et véhicule électrique ainsi que dispositif d'accumulation électrique équipés de celui-ci
JP5734704B2 (ja) 電源装置及び電源装置を備える車両
JP6138688B2 (ja) 電源装置及びこれを備える車両並びに蓄電装置
JP6328842B2 (ja) 電源装置及びこれを備える車両
JP7039584B6 (ja) 電源装置及びこれを備える車両並びに蓄電装置
WO2014024450A1 (fr) Dispositif d'alimentation électrique, et véhicule électrique ainsi que dispositif d'accumulation électrique équipés de celui-ci
JP6073583B2 (ja) 電源装置及びこの電源装置を備える車両並びに蓄電装置
CN107408646B (zh) 电源装置以及具备该电源装置的车辆
JP2013012441A (ja) 電源装置及び電源装置を備える車両
WO2013161654A1 (fr) Dispositif d'alimentation électrique, véhicule comprenant le dispositif d'alimentation électrique, et dispositif de stockage d'électricité
JP6017539B2 (ja) 電源装置及びこれを備える車両並びに蓄電装置
JP2013171746A (ja) 電源装置及びこれを備える車両並びに蓄電装置
JP6223978B2 (ja) 電源装置及びこれを備える電動車両並びに蓄電装置
JP2012033419A (ja) 電源装置及びこれを用いた車両、電池セル及び電池セルの製造方法
JP2015133169A (ja) 電源装置及びこれを備える車両並びに蓄電装置
WO2012165493A1 (fr) Dispositif de source d'énergie pour distribution d'énergie et véhicule comportant le dispositif de source d'énergie
JP2013125617A (ja) 電源装置及びこれを備える車両並びに蓄電装置
WO2013146561A1 (fr) Dispositif d'alimentation électrique, ainsi que véhicule et dispositif de stockage d'énergie pourvus de ce dernier
JP2020113361A (ja) 電源装置及びこれを備える車両、蓄電装置並びに電源装置用セパレータ
WO2013031614A1 (fr) Dispositif d'alimentation électrique ainsi que véhicule équipé de celui-ci, et dispositif de stockage
WO2013084756A1 (fr) Dispositif d'alimentation électrique, véhicule équipé dudit dispositif d'alimentation électrique, et dispositif de stockage électrique
WO2012057169A1 (fr) Dispositif d'alimentation, véhicule l'utilisant, élément de batterie et procédé de fabrication d'élément de batterie
WO2013002090A1 (fr) Dispositif d'alimentation en énergie, véhicule comprenant ce dispositif, et procédé de fabrication d'un dispositif d'alimentation en énergie

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13828187

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13828187

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP