WO2012133709A1 - Dispositif de source d'alimentation, et véhicule comportant un dispositif de source d'alimentation - Google Patents

Dispositif de source d'alimentation, et véhicule comportant un dispositif de source d'alimentation Download PDF

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Publication number
WO2012133709A1
WO2012133709A1 PCT/JP2012/058483 JP2012058483W WO2012133709A1 WO 2012133709 A1 WO2012133709 A1 WO 2012133709A1 JP 2012058483 W JP2012058483 W JP 2012058483W WO 2012133709 A1 WO2012133709 A1 WO 2012133709A1
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WO
WIPO (PCT)
Prior art keywords
power supply
battery
supply device
battery stack
inner case
Prior art date
Application number
PCT/JP2012/058483
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English (en)
Japanese (ja)
Inventor
康広 浅井
高志 瀬戸
橋本　裕之
土屋　正樹
貴英 籠谷
Original Assignee
三洋電機株式会社
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Filing date
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Application filed by 三洋電機株式会社 filed Critical 三洋電機株式会社
Publication of WO2012133709A1 publication Critical patent/WO2012133709A1/fr

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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
    • 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
    • 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
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • 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
    • H01M10/6555—Rods or plates arranged between the cells
    • 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
    • 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
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/229—Composite material consisting of a mixture of organic and inorganic materials
    • 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
    • H01M50/24—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 adapted for protecting batteries from their environment, e.g. from corrosion
    • 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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
    • 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 mainly includes a power source device for a motor for driving a vehicle such as a hybrid vehicle or an electric vehicle, or a large current power source device used for power storage for home use or factory use, and such a power source device.
  • a power source device for a motor for driving a vehicle such as a hybrid vehicle or an electric vehicle
  • a large current power source device used for power storage for home use or factory use and such a power source device.
  • a cooling pipe 260 for circulating a refrigerant is disposed on the lower surface of the battery stack 205 in which the battery cells 201 are stacked, and is connected to the cooling mechanism 269.
  • the cooling pipe 260 is extended in the direction intersecting the stacking direction in which the battery cells 201 are stacked.
  • the cooling pipe 260 is extended and connected in parallel with the stacking direction in which the battery cells 201 are stacked.
  • the cooling plate 261 is disposed on the lower surface of the battery stack 205, and the cooling pipe 260 is provided on the cooling plate 261, so that heat is taken from the battery stack 205 via the cooling plate 261 and cooled. I am letting.
  • JP 2009-134901 A JP 2009-134936 A JP 2010-15788 A Japanese Utility Model Publication No. 34-16929
  • Such condensation on the surface of the battery cell occurs when moisture in the air on the surface of the battery cell solidifies. Therefore, in order to prevent condensation, it is conceivable to cover the surface of the battery stack so that no air exists on the surface.
  • a potting in which the battery stack is accommodated in a case or the like and filled with resin or the like can be considered.
  • the conventional structure in which the battery stack is fastened with the bind bar cannot hold the resin on the surface, and it is difficult to coat with such resin.
  • a main object of the present invention is to provide a power supply device and a vehicle equipped with the power supply device that are improved in safety and reliability by avoiding a situation where condensation occurs on the surface of the battery cell.
  • a battery stack formed by stacking a plurality of battery cells, and a covering case surrounding the outside of the battery stack.
  • the covering case includes an inner case that is U-shaped in cross-sectional view with its upper and end surfaces open, a cover portion that closes an upper surface opening portion of the inner case, and an end surface opening portion of the inner case.
  • a buffer member can be disposed between the battery stack and the covering case. This eliminates a gap between the battery stack and the covering case by the buffer member, and avoids a situation where condensation occurs in this gap and adversely affects the battery stack.
  • the buffer member can be a filler injected between the battery stack and the covering case.
  • the buffer member can be a urethane-based resin injected between the battery laminate and the covering case.
  • the clearance between the battery stack and the covering case can be eliminated by the buffer member, and condensation can be effectively prevented to improve reliability.
  • the buffer member can be an elastic member. Therefore, the clearance gap between a battery laminated body and a coating
  • the said battery laminated body is further equipped with the insulating separator interposed between adjacent battery cells,
  • the said separator of the said battery laminated body is provided.
  • the side surface it can be comprised in the substantially same plane as the surface of the said battery cell.
  • the protruding portion extended to cover the battery cell side surface with the side surface of the battery stack as in the conventional separator is eliminated, and the battery stack can be miniaturized using a smaller separator. Protection can be achieved by covering the side surface of the battery stack with an insulating covering case.
  • the power supply device further includes a fastening member that fastens the battery stack in a state where the battery stack is housed in the inner case, and the fastening member includes the end. Can be fixed to the plate. Accordingly, the resin can be injected by the covering case disposed around the battery stack while the battery stack is fastened by the fastening member, and a situation in which condensation occurs on the surface of the battery stack can be avoided.
  • the fastening member can be disposed outside the inner case. Thereby, the fixing operation of the fastening member can be facilitated, and the covering case can be configured to inject the resin.
  • the inner case can be made of resin, and the bottom surface of the resin inner case can be insert-molded with a metal bottom plate.
  • the heat dissipation can be enhanced by conducting heat from the bottom through the metal bottom plate.
  • a cooling plate containing a cooling pipe in which a coolant is circulated is brought into contact with the bottom plate. Therefore, the power supply device can be stably used even at high output.
  • a metal bottom plate can be insert-molded on a part of the bottom surface of the resin inner case. Therefore, heat dissipation can be improved by thermally conducting the inner case from the bottom surface through the metal bottom plate.
  • the power supply device includes a battery stack formed by stacking a plurality of battery cells, and a covering case surrounding the outside of the battery stack.
  • a buffer member is arranged between the body and the covering case, and the buffer member can be a resin filled so as to cover the battery stack surface on the bottom surface of the battery stack.
  • the battery cell or the battery laminate can be exposed without covering the bottom surface while covering the side surface with the heat shrinkable tube.
  • the bottom surface of the battery cell can be covered with a resin as a buffer member, it is not necessary to cover the bottom surface with a heat-shrinkable tube.
  • the power supply device of the twelfth aspect it is possible to further include a cooling pipe that is disposed on one surface of the inner case and in which a refrigerant is circulated.
  • the cooling pipe can be brought into contact with one surface for cooling, and a power supply apparatus that can be stably used even at high output can be obtained.
  • the power supply device of the thirteenth aspect it is possible to further include a cooling plate that is disposed on one surface of the inner case and has a cooling pipe in which a refrigerant is circulated.
  • the cooling plate incorporating the cooling pipe can be cooled by contacting the bottom plate, and the power supply device can be stably used even at high output.
  • the power supply device includes a battery stack formed by stacking a plurality of battery cells, and a covering case surrounding the outside of the battery stack, wherein the covering case Includes an inner case that is U-shaped in cross-section when one of the upper and end surfaces is opened, a cover portion that closes the upper surface opening portion of the inner case, and an end plate that closes the end surface opening portion of the inner case.
  • the upper surface is closed with the cover portion
  • the end face opening is closed with the end plate
  • a cushioning member can be arranged between them. This eliminates a gap between the battery stack and the covering case by the buffer member, and avoids a situation where condensation occurs in this gap and adversely affects the battery stack.
  • the battery stack is inserted into the opening of the inner case, the upper surface is closed with the cover portion, and both end surfaces are closed with the end plate, thereby sealing the structure.
  • the above power supply device can be used for a vehicle including the power supply device according to the sixteenth aspect.
  • FIG. 12A is a schematic cross-sectional view showing a battery stack with a cooling pipe disposed on the lower surface
  • FIG. 12B is a schematic cross-sectional view showing a battery stack according to a modification.
  • 6 is a perspective view showing a battery stack of a power supply device according to Example 2.
  • FIG. It is a disassembled perspective view which removed the cooling plate from the battery laminated body 5 of FIG.
  • FIG. 14 is a vertical sectional view of the battery stack 5 of FIG. 13. It is an expanded sectional perspective view which shows the junction part of an inner case and a cover part. 6 is a perspective view showing a battery stack according to Example 3.
  • FIG. It is a disassembled perspective view of the battery laminated body of FIG. It is a model exploded perspective view which shows a mode that a battery cell side surface is coat
  • the embodiment described below exemplifies a power supply device for embodying the technical idea of the present invention and a vehicle including the power supply device
  • the present invention includes the following power supply device and a vehicle including the power supply device.
  • 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. Note that the size, positional relationship, and the like of the members shown in each drawing may be exaggerated for clarity of explanation.
  • 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.
  • FIG. 1 is an exploded perspective view of the power supply device 100
  • FIG. 2 is a perspective view showing the battery stack 5 of FIG. 1
  • FIG. 3 is an exploded perspective view with the cooling plate 61 removed from the battery stack 5 of FIG. 4 is a perspective view of the battery stack 5 of FIG. 2 as viewed obliquely from below
  • FIG. 5 is an exploded perspective view of the battery stack 5 of FIG. 2
  • FIG. 6 is an exploded perspective view of the battery stack 5 of FIG. 7 is a perspective view of the inner case 21, FIG.
  • FIG. 8 is an exploded perspective view showing a state in which the battery stack 5 of FIG. 6 is inserted into the inner case 21 of FIG. 7, and FIG. 9 is a view of the battery stack 5 and the covering case.
  • 10 is a schematic cross-sectional view showing an example in which a water-absorbing sheet is disposed therebetween, and FIG. 10 is a perspective view showing a state in which urethane resin is injected into the covering case 16 of FIG.
  • This power supply device 100 is mainly mounted on an electric vehicle such as a hybrid vehicle or an electric vehicle, and is used as a power source for supplying electric power to a traveling motor of the vehicle and causing the vehicle to travel.
  • the power supply device of the present invention can be used for an electric vehicle other than a hybrid vehicle or an electric vehicle, and can also be used for an application requiring a high output other than an electric vehicle. (Power supply device 100)
  • the external appearance of the power supply device 100 is a box shape whose upper surface is rectangular.
  • a box-shaped outer case 70 is divided into two, and a plurality of assembled batteries 10 are accommodated therein.
  • the exterior case 70 includes a lower case 71, an upper case 72, and end plates 73 connected to both ends of the lower case 71 and the upper case 72.
  • the upper case 72 and the lower case 71 have a flange portion 74 protruding outward, and the flange portion 74 is fixed with a bolt and a nut.
  • the outer case 70 has a flange 74 disposed on the side surface of the outer case 70. Further, in the example shown in FIG.
  • the assembled battery 10 is composed of four battery stacks 5 in the example shown in FIG. That is, two battery stacks 5 are connected in the stacking direction of the rectangular battery cells 1 to form one battery stack continuous body 10B, and two battery stack continuous bodies 10B in such a connected state are arranged in parallel.
  • the assembled battery 10 is configured.
  • FIG. 3 A perspective view of each battery stack constituting the assembled battery 10 is shown in FIG.
  • the battery stack 5 is fixed on a cooling plate 61 for cooling the battery stack 5.
  • a connection structure is provided (details will be described later).
  • each battery stack 5 is covered with a covering case 16.
  • the covering case 16 includes an inner case 21 having a U-shaped cross section, an end plate 3 that covers both ends of the inner case 21, and a cover portion that covers the top surface. 24.
  • the end plate 3 that holds the battery stack 5 from both end faces is also used as the end face of the covering case 16.
  • a packing 3 b is provided inside the end plate 3.
  • the packing 3b is a sheet-like elastic member.
  • the battery stack 5 includes a plurality of prismatic battery cells 1, a separator 2 that insulates the prismatic battery cells 1 by interposing them on a surface where the plurality of prismatic battery cells 1 are stacked, and a plurality of separators.
  • An inner case 21 that houses a battery stack 5 in which the rectangular battery cells 1 and separators 2 are alternately stacked, a pair of end plates 3 that are disposed on end surfaces of the battery stack 5 in the stacking direction, A plurality of metal fastening members 4 that fasten the end plates 3 disposed on both end faces are provided. (Battery laminate 5)
  • the battery stack 5 is formed by stacking a plurality of rectangular battery cells 1 with an insulating separator 2 interposed therebetween. Further, as shown in FIG. 5, a pair of end plates 3 are arranged on both end faces of the battery stack 5, and the pair of end plates 3 are connected by a fastening member 4. In this way, a battery stack 5 in which a plurality of prismatic battery cells 1 and separators 2 are alternately stacked by interposing a separator 2 that insulates adjacent prismatic battery cells 1 on a stacking surface of the prismatic battery cells 1. Yes. (Inner case 21)
  • the inner case 21 is formed in a U shape with its upper and both end faces open.
  • the inner case 21 insulates the inner surfaces of the stacked rectangular battery cells 1 from each other.
  • the joint surface with the cooling plate 61 needs to enhance heat conduction.
  • the surface of the bottom plate 21b of the inner case 21 is made of metal in order to increase the thermal conductivity of this surface.
  • the bottom plate 21b is an aluminum plate, and the aluminum plate is insert-molded with resin as shown in the sectional view of FIG.
  • the resin a fiber sheet or a mica sheet can be suitably used. Thereby, the thermal conductivity of the bottom surface is enhanced while the side surface is insulative. Further, if necessary, a heat conductive sheet having insulation and heat conductivity can be disposed on the bottom surface of the inner case.
  • the position where aluminum is inserted into the inner case can be appropriately changed depending on the position where the cooling plate is disposed.
  • aluminum is insert-molded on the side surface of the inner case. You can also
  • both side edges of the inner cover 21 are opened, but either one can be closed. In this case, it is sufficient to close only the open end edge with the end plate, and the fixing by the end plate can be halved.
  • the fastening member may connect two fastening members at the end face on the sealing side of the inner case. (Square battery cell 1)
  • the outer can constituting the outer shape is a rectangular shape whose thickness is smaller than the width.
  • Positive and negative electrode terminals are provided on the sealing plate for closing the outer can, and a safety valve is provided between the electrode terminals.
  • the safety valve is configured to open when the internal pressure of the outer can rises to a predetermined value or more, and to release the internal gas. The increase in the internal pressure of the outer can can be stopped by opening the safety valve.
  • the unit cell constituting the rectangular battery cell 1 is a rechargeable secondary battery such as a lithium ion battery, a nickel-hydrogen battery, or a nickel-cadmium battery.
  • the battery cell used in the present invention is not limited to a rectangular battery cell, and may be a cylindrical battery cell or a rectangular battery cell in which an exterior body is covered with a laminate material or other shapes.
  • the respective rectangular battery cells 1 that are stacked to form the battery stack 5 are connected in series by connecting adjacent positive and negative electrode terminals with a bus bar 6.
  • the assembled battery 10 in which the adjacent rectangular battery cells 1 are connected in series can increase the output voltage and increase the output.
  • an assembled battery can connect adjacent square battery cells in parallel, or can combine a series connection and a parallel connection into multiple parallels or multiple parallels.
  • the rectangular battery cell 1 is manufactured with a metal outer can.
  • an insulating separator 2 is sandwiched in order to prevent short-circuiting of the outer can of the adjacent rectangular battery cell 1.
  • the outer can of the rectangular battery cell can also be made of an insulating material such as plastic. In this case, since it is not necessary for the rectangular battery cell to insulate and laminate the outer can, the separator can be made of metal or the separator can be made unnecessary. (Separator 2)
  • Separator 2 is a spacer for insulating and stacking adjacent rectangular battery cells 1 electrically and thermally.
  • the separator 2 is made of an insulating material such as plastic, and is disposed between the adjacent rectangular battery cells 1 to insulate the adjacent rectangular battery cells 1.
  • the side surface of the separator 2 can be simplified and downsized. That is, in the example shown in FIGS. 5 and 6, since the side surface of the battery stack 5 can be protected by making the side surface of the inner case 21 insulative, the separator 2 only needs to insulate only the surface where the rectangular battery cells 1 face each other. It is not necessary to cover the side surface of the rectangular battery cell with a separator. For this reason, it is possible to reduce the size by eliminating the part protruding from the side surface of the separator so as to cover the side surface of the battery stack 5. Or what hold
  • this separator can be configured to be substantially flush with the surface of the prismatic battery cell on the side surface of the battery stack, the lateral width of the battery stack can be reduced.
  • the protruding portion provided on the side surface of the separator is provided for positioning the battery cells to be stacked.
  • the entire inner case can be made of metal.
  • the side surface of the inner case is also made of metal, it is preferable to cover the side surfaces of the rectangular battery cells with a separator in order to insulate the rectangular battery cells on the side surfaces of the battery stack.
  • the battery laminated body does not necessarily need to interpose a separator between square battery cells.
  • the prismatic battery cell outer cans are molded with an insulating material, or the outer periphery of the prismatic battery cell outer cans are covered with a heat-shrinkable tube, insulating sheet, insulating paint, etc. By insulating, a separator can be made unnecessary.
  • a method of cooling the battery stack through a cooling plate cooled by using a refrigerant or the like is employed, instead of an air cooling method in which cooling air is forced between the rectangular battery cells to cool the rectangular battery cells.
  • an air cooling system that cools the prismatic battery cells by forcibly blowing cooling air between the prismatic battery cells.
  • a pair of end plates 3 are arranged on both end faces of the battery stack 5 in which the prismatic battery cells 1 and the separators 2 are alternately stacked, and the battery stack 5 is formed by the pair of end plates 3. It is concluded.
  • the end plate 3 is made of a material that exhibits sufficient strength, for example, metal.
  • the end plate 3 has a fixing structure for fixing to the lower case 71 shown in FIG. (Fastening member 4)
  • the fastening members 4 are arranged on both side surfaces of the battery stack 5 in which the end plates 3 are stacked at both ends, and are fixed to the pair of end plates 3 so that the battery stack 5 is fixed.
  • the fastening member 4 includes a main body 41 that covers the side surface of the battery stack 5, and a bent piece 42 that is bent at both ends of the main body 41 and fixed to the end plate 3. And an upper surface holding portion 43 that is bent upward to hold the upper surface of the battery stack 5 and a fastening connecting portion 44 that protrudes downward.
  • a fastening member 4 is made of a material having sufficient strength, for example, a metal bind bar. In the example shown in FIG.
  • a fastening member is provided for each battery stack, and in this case, end plates positioned on the respective end surfaces of each battery stack are fixed by a fastening member.
  • both side surfaces can also be integrally connected by the fastening member 4.
  • the fastening member 4 is also used as a member for connecting the battery stacks 5 to each other.
  • the end plates 3 positioned on the end surfaces are fixed to each other by the fastening members 4, and the fastening members are not fixed to the end plates 3 facing each other between the two battery stacks 5.
  • the end plate 3 which opposes between two battery laminated bodies 5 can also be shared as one component.
  • the fixing of the end plate and the fastening member is not limited to the structure of fixing with the bolt described in the embodiment. (Waterproof structure)
  • the battery stack 5 is waterproofed by a covering case 16. Thereby, the penetration
  • a cooling system that takes heat away from the prismatic battery cells by heat exchange using a refrigerant is used as a cooling system for the prismatic battery cells, the cooling can be performed more efficiently, but the temperature drops below the dew point due to high cooling performance.
  • moisture in the air present around the battery stack may be cooled to cause condensation on the surface of the prismatic battery cell. Therefore, the cover case 16 is not simply made into a waterproof structure, but has a waterproof structure for protecting the surface of the battery stack 5 surrounded by the cover case 16 from such water droplets. (Buffer member 18)
  • the buffer member 18 is provided between the battery stack 5 and the covering case 16 as shown in the cross-sectional views of FIGS. Is arranged. That is, the buffer member 18 is filled in the gap between the battery stack 5 and the covering case 16, and the situation in which moisture in the air existing in the gap is condensed to adversely affect the battery stack 5 is avoided. .
  • the periphery of the battery stack 5 is covered with a resin as the buffer member 18.
  • the resin is injected between the battery stack 5 and the covering case 16 by surrounding the battery stack 5 with the covering case 16.
  • the space between the battery stack 5 and the covering case 16 is eliminated, and a situation in which the surface of the battery stack 5 is dewed and adversely affected can be avoided.
  • the buffer member 18 is filled with a filler. As a result, a waterproof structure is obtained in which the periphery of the battery stack 5 is waterproof as shown in FIG. (Filler)
  • Urethane resin can be suitably used as the filler. By potting with the filler in this way, space is eliminated, the surface of the rectangular battery cell 1 is protected, and conduction and corrosion due to condensation can be avoided. In order to avoid the generation of bubbles by spreading the filler in the gap, it is preferable to reduce the pressure in the inner case 21 or negative pressure when filling the filler. Or conversely, the resin can be injected under pressure. After filling the resin, it is dried until the resin is completely cured. (Water absorption sheet)
  • a water absorbing sheet can be used as the buffer member 18.
  • the water-absorbing sheet is a sheet material having a hygroscopic property and a water-absorbing property composed of a polymer material or the like, and thus, condensation can be avoided at a low cost with a simple configuration without obtaining a complicated process such as potting.
  • the buffer member 18 is not limited to this, and a structure such as a sealing structure using a packing, an O-ring, a gasket, or the like, a sheet-like elastic member, another potting material, or a battery stack in a waterproof bag is used as appropriate. it can. (Cover 24)
  • the upper surface is closed with the cover 24 as shown in FIG.
  • it is fixed to the upper surface of the inner case 21 via packing or the like.
  • a gas duct 26 communicating with the safety valve of the rectangular battery cell 1 is provided on the inner surface of the cover portion 24.
  • the bus bar 6 can also be insert-molded in the cover part 24, and by joining the cover part 24 to the top surface of the battery stack 5, the electrode terminals of the respective rectangular battery cells 1 can be connected together. It becomes possible.
  • a circuit board on which a control circuit for controlling the power supply device 100 is mounted is disposed on the upper surface of the cover portion 24. Further, the circuit board may be integrally provided in the cover portion.
  • the covering case 16 can also hermetically seal the fitting portion by using a case member constituting each surface as a fitting structure.
  • a fitting structure a packing, an O-ring, a gasket or the like can be used, and the covering case 16 can be sealed. (Linked structure)
  • the battery stack 5 and the cooling plate 61 have a connection structure for fixing the battery stack 5 on the cooling plate 61.
  • the connection structure includes a fastening connection portion 44 provided so as to protrude from the lower end of the main body portion 41 of the fastening member 4, and a plate connection portion provided on the cooling plate 61 side. Composed. A plurality of fastening connecting portions 44 are provided apart from each other.
  • the lower end of the main body portion 41 is provided at three locations on both sides and in the middle. (Locking piece)
  • the fastening connecting portion 44 is a locking piece having a tip formed in a hook shape. This locking piece has a hook-like protruding direction that is outward from the battery stack 5. (Plate connecting part)
  • a plate connecting portion is provided as a connecting mechanism for connecting to the fastening connecting portion 44.
  • the plate connecting portion is provided at a position corresponding to the position where the fastening connecting portion 44 is provided.
  • the connection bar 50 in which the locking hole 51 which can lock a locking piece is formed in the example of FIG.
  • the fastening member 4 can be easily fixed to the cooling plate 61 by inserting and locking the hook-shaped locking pieces into the locking holes 51.
  • the connecting bar 50 has a shape in which the strip strip is bent in a substantially U shape in a sectional view.
  • the strip strip is made of a metal plate so as to exhibit sufficient strength. In the example of FIG. 5, the strength is improved by forming a step on the surface of the strip strip.
  • the length of the connecting bar 50 is set such that the bottom surface of the cooling plate 61 can be sandwiched between the substantially U-shaped bent portions.
  • a locking hole 51 is opened on the end face of the connecting bar 50 as a plate connecting portion. In this manner, the plate connecting portion can be easily added to the cooling plate 61 by using the connecting bar 50.
  • a coupling mechanism can be added without complicating the shape of the cooling plate 61 having a refrigerant circulation function or the like.
  • the cooling plate 61 is connected to a cooling mechanism.
  • the cooling mechanism includes, for example, a refrigerant circulation mechanism.
  • FIG. 11 shows an example of such a refrigerant circulation mechanism.
  • a battery stack 5 in which a plurality of rectangular battery cells 1 are stacked is disposed on the upper surface of a cooling plate 61.
  • the cooling plate 61 is disposed in a thermally coupled state to the rectangular battery cells 1 constituting the battery stack 5.
  • the cooling plate 61 is provided with a cooling pipe 60 as a refrigerant pipe through which the refrigerant flows, and the cooling pipe 60 is connected to a cooling mechanism 69.
  • the power supply device can also cool each member such as an electronic circuit disposed on the end face of the battery stack.
  • the cooling plate 61 including the cooling pipe 60 that circulates the refrigerant therein is brought into contact with the bottom plate 21b of the covering case 16 to be cooled, thereby improving heat dissipation and stabilizing the power supply device even at high output. Available. (Cooling plate 61)
  • the cooling plate 61 is a radiator for conducting heat of the rectangular battery cell 1 to dissipate it to the outside, and in the example of FIG.
  • the cooling plate 61 incorporates a cooling pipe 60 that is a refrigerant pipe made of copper, aluminum, or the like that circulates a liquefied refrigerant that is a cooling liquid as a heat exchanger.
  • the cooling pipe 60 is thermally coupled to the upper surface plate of the cooling plate 61, and a heat insulating material is disposed between the cooling plate 60 and the bottom plate to insulate the space from the bottom plate.
  • the cooling plate 61 can be composed of only a metal plate. For example, it is made into the shape excellent in heat dissipation and heat transfer property, such as a metal body provided with a radiation fin. Or you may utilize not only metal but the heat-transfer sheet
  • the cooling plate 61 is cooled by supplying the coolant from the cooling mechanism 69 to the refrigerant piping provided inside.
  • the cooling plate 61 can cool the cooling liquid supplied from the cooling mechanism 69 more efficiently as a refrigerant that cools the cooling plate 61 with heat of vaporization that evaporates inside the refrigerant pipe 61.
  • two battery stacks 5 are placed on each cooling plate 61. As described above, two battery stacks 5 are connected in the length direction, that is, the stacking direction of the rectangular battery cells 1 to form one battery stack continuous body 10B, and the two batteries in such a connected state are formed.
  • the stacked body 5 is supported by one cooling plate 61. Two of these battery stack continuous bodies 10B are arranged in parallel to constitute the assembled battery 10.
  • the cooling plate 61 is extended in the stacking direction of the rectangular battery cells 1, and the cooling pipe 60 piped inside is meandered so as to be folded back at the edge, thereby forming three lines of linear shapes.
  • a cooling pipe 60 is disposed on the lower surface of the battery stack 5.
  • coolant is made common by connecting the cooling pipes 60 with battery lamination
  • a plurality of cooling pipes can be arranged on the lower surface of the battery stack, and can be divided into, for example, folded portions of the meandering cooling pipe shown in FIG. 11 to form a plurality of cooling pipes.
  • the cooling pipes may be connected to share a refrigerant path.
  • position a cooling pipe can be changed suitably.
  • the cooling plate 61 also functions as a soaking means for equalizing the temperatures of the plurality of rectangular battery cells 1. That is, by adjusting the thermal energy absorbed by the cooling plate 61 from the rectangular battery cell 1, the rectangular battery cell whose temperature is increased, for example, the rectangular battery cell in the central portion is efficiently cooled, and the temperature is decreased, for example, both ends The cooling of the rectangular battery cells is reduced, and the temperature difference between the rectangular battery cells is reduced. As a result, the temperature unevenness of the prismatic battery cells can be reduced, and a situation in which some of the prismatic battery cells are deteriorated and overcharge and overdischarge can be avoided.
  • the cooling plate 61 in the bottom face of the battery laminated body 5 was shown in FIG. 11, it is not restricted to this structure.
  • the cooling plate can be arranged on both side surfaces of the rectangular battery cell, or can be arranged only on one side surface.
  • the cooling mechanism 69 shown in FIG. 11 forcibly cools the cooling pipe 60 with the heat of vaporization of the refrigerant.
  • the cooling mechanism 69 includes a circulation pump P and a radiator 54, and a control circuit CT that controls the operation of the fan 53 of the circulation pump P and the radiator 54.
  • the circulation pump P circulates the liquid refrigerant through the refrigerant path and the radiator 54.
  • the control circuit CT detects the temperature of the battery stack 5 with a temperature sensor, and operates the circulation pump P when the detected temperature becomes higher than the set temperature.
  • the control circuit CT detects the temperature of the refrigerant with a temperature sensor, and operates the fan 53 of the radiator 54 when the temperature of the refrigerant becomes higher than a set value.
  • the refrigerant circulated through the refrigerant path by the circulation pump P is insulating oil or antifreeze. Silicon oil or the like can be used as the insulating oil.
  • the cooling with the refrigerant is used in the meaning including water cooling in which water or a coolant is circulated. (Cooling pipe 60)
  • the cooling pipe 60 through which the internal refrigerant passes can be directly disposed on the lower surface of the battery stack 5 without using a metal plate such as a cooling plate. That is, as shown in the schematic cross-sectional view of FIG. 12A, a plurality of rows of cooling pipes 60 are arranged on the lower surface of the covering case 16 in which the battery stack 5 is housed, and the heat insulating member 14 is interposed between the cooling pipes 60. Place. In this way, the air pipe is eliminated around the cooling pipe 60 and is insulated by covering with the heat insulating member, so that the cooling pipe 60 can be efficiently cooled.
  • the cooling pipe 60 is formed in a flat shape with a flat surface facing the battery stack.
  • the cooling pipe 60 is made of a material excellent in heat conduction.
  • metal such as aluminum.
  • the aluminum cooling pipe is relatively soft, the surface can be slightly deformed by pressing at the contact interface with the battery stack 5 to improve the adhesion, and high thermal conductivity can be realized. (Cooling mechanism 69B according to a modification)
  • the cooling mechanism can supply a refrigerant that is vaporized inside the refrigerant path and cooled by the heat of vaporization to the refrigerant path.
  • FIG. 30 shows a cooling mechanism 69B according to such a modification. This refrigerant is vaporized inside the refrigerant path to cool the refrigerant path.
  • the cooled refrigerant path cools the battery stack 5 from the bottom surface.
  • the cooling mechanism 69B can cool the battery stack 5 to a low temperature.
  • the cooling mechanism 69B includes a compressor C that pressurizes the vaporized refrigerant, a condenser 57 that cools and liquefies the refrigerant pressurized by the compressor C, and supplies the refrigerant liquefied by the condenser 57 to the refrigerant path. And an inflator 58.
  • the expander 58 is, for example, a capillary tube or an expansion valve. A capillary tube or an expansion valve made of a thin tube is limited to a predetermined flow range of the refrigerant.
  • These expanders 58 are designed to have a flow rate at which all of the refrigerant is vaporized while being discharged from the refrigerant path.
  • the battery cell 1 can also be cooled by supplying the liquefied refrigerant to the refrigerant flow path, evaporating the refrigerant in the refrigerant flow path, and forcibly cooling with the heat of vaporization of the refrigerant.
  • a cooling mechanism 69B that forcibly cools the cooling plate 61B with the heat of vaporization of the refrigerant supplies the liquefied refrigerant to the cooling pipe 60B via the expansion valve 65, and vaporizes the supplied refrigerant by evaporating inside the cooling pipe 60B.
  • the cooling plate 61B is cooled by heat.
  • the vaporized refrigerant is pressurized by the compressor C, supplied to the condenser 57, liquefied by the condenser 57, and circulated through the expansion valve 65 to the refrigerant flow path of the cooling pipe 60B to cool the cooling plate 61B.
  • Cooling mechanism 69C according to a modification
  • the cooling pipe is not necessarily cooled by the heat of vaporization of the refrigerant, and for example, water cooling that circulates and cools the cooled liquid can be adopted. Further, the cooling pipe may be provided with a cooling gas passage in the interior, and the cooled gas may be cooled by forcibly blowing the cooled gas. In addition, when employing water cooling in which water or a coolant is circulated, the coolant used in the water cooling may be cooled with a refrigerant. In particular, in a vehicle power supply device, an existing cooling mechanism used for an indoor air conditioner or the like can be used for cooling the coolant. A cooling mechanism 69C employing such a configuration is shown in FIG.
  • the cooling mechanism 69C shown in this figure includes a first cooling mechanism 69a that cools the cooling plate 61C with a cooling liquid by water cooling, and a second cooling mechanism 69b for cooling the vehicle interior that uses a refrigerant such as an indoor air conditioner. 67 is connected.
  • a pump P a three-way valve 64, an intermediate heat exchanger 67, a heater 66, and a cooling pipe 60C are arranged in a first circulation path 65 indicated by a thick line.
  • the radiator 54B is also connected through the three-way valve 64.
  • the radiator 54B is air-cooled by outside air, and when the outside air temperature is low, the three-way valve 64 can be switched from the intermediate heat exchanger 67 to the radiator 54B side to suppress energy consumption required for cooling, such as the power of the compressor C.
  • the heater 66 is a member for adjusting the temperature by heating the coolant.
  • the second cooling mechanism 69b is provided with a compressor C, an intermediate heat exchanger 67, an evaporator 56, and a condenser 57B in a second circulation path 55B indicated by a thin line.
  • the intermediate heat exchanger 67 and the evaporator 56 are connected in parallel via expansion valves 58C and 58B, respectively.
  • a fan 53B is in close proximity to the condenser 57B. This fan 53B can also be used for heat dissipation of the radiator 54B.
  • water containing antifreeze is used as the coolant
  • HFC is used as the refrigerant.
  • the coolant can be cooled more efficiently using the existing cooling mechanism, There is an advantage that the battery block can be cooled stably. (Thermal conductive sheet 12)
  • a heat transfer member such as the heat conductive sheet 12 is interposed between the cooling pipe 60 and the square battery cell 1.
  • the heat conductive sheet 12 is made of a material that is insulating and excellent in heat conduction, and more preferably has a certain degree of elasticity. Examples of such a material include acrylic, urethane, epoxy, and silicone resins.
  • the surface of the outer can is covered and insulated with a heat-shrinkable tube or the like, and in order to further improve the insulation, the insulating heat conductive sheet 12 is interposed to enhance safety and reliability. Moreover, it can replace with a heat conductive sheet and can also use a heat conductive paste. Furthermore, an additional insulating film can be interposed in order to reliably maintain the insulating property.
  • the cooling pipe can be made of an insulating material. When sufficient insulation is achieved in this way, the heat conductive sheet or the like may be omitted.
  • the heat insulating member 14 is disposed in the gap between the cooling pipes 60.
  • the heat insulating member 14 can be a heat insulating resin.
  • urethane resin can be suitably used.
  • the periphery of the cooling pipe 60 is covered with a heat insulating resin by potting. By doing so, the cooling pipe 60 and the bottom surface of the battery stack 5 can be reliably covered by potting to prevent the occurrence of condensation and enhance safety.
  • the gap between the cooling pipes 60 and the lower surface of the cooling pipe 60 are brought into contact with the bottom surface of the battery stack 5 via the heat conductive sheet 12.
  • the heat insulating member 14 is filled and covered. However, by filling the upper surface of the cooling pipe 60 with the heat insulating member 14, it is possible to insulate the upper surface of the cooling pipe 60 and to eliminate the need for the heat conductive sheet provided between the prismatic battery cells 1. .
  • FIG. 12 (a) an example in which a box type with an open lower surface and a closed upper surface is used as the covering case 16 has been described.
  • a closed bottomed box type can also be used.
  • This covering case may be a bottom plate obtained by insert molding a metal plate on the bottom surface as shown in FIG. Further, the bottom plate can be insert-molded so as to partially embed one or a plurality of strip-shaped metal plates in addition to insert-molding a uniform metal plate.
  • the bottom plate is configured so that the metal plate 21c is disposed at a position corresponding to the cooling pipe 60, so that the thermal coupling with the cooling pipe 60 is achieved. Can be improved.
  • the power supply device 100 seals the battery stack 5 to have a waterproof structure, and protects the prismatic battery cell 1 from condensation and the like.
  • the inner space can be defined by the inner case 21 and the end plate 3, and the buffer member 18 can be disposed and sealed by potting or the like.
  • the end plate 3 is located outside, there is an advantage that it can be easily fixed to an exterior case, a frame, or the like.
  • the fastening member 4 is located outside the inner case 21, there is an advantage that the fixing structure for fixing the cooling plate 61 can be reduced in size. Further, when the fastening member 4 is positioned outside the inner case 21, for example, as shown in FIG.
  • the packing 3b provided on the end plate 3 is made of an elastic member, the packing 3b is restrained by the fastening member.
  • the adhesiveness between the inner case 21 and the end plate 3 can be enhanced by elastic deformation. Thereby, the infiltration of water from the outside of the covering case can be prevented.
  • the end plate 3 can be fixed to an inner case and a battery laminated body can also be fastened. If it is this structure, since an inner case can serve as a fastening member, further size reduction is achieved. (Example 2)
  • FIG. 13 is a perspective view showing the battery stack 5B of the power supply device according to the second embodiment
  • FIG. 14 is an exploded perspective view with the cooling plate 61 removed from the battery stack 5B of FIG. 13
  • FIG. 14 is an exploded perspective view of the battery stack 5B of FIG. 15, FIG.
  • FIG. 16 is an exploded perspective view of the battery stack 5B of FIG. 15
  • FIG. 17 is a vertical sectional view of the battery stack 5B of FIG.
  • the expanded sectional perspective view which shows the junction part of the part 24 is shown, respectively.
  • the configuration of the exterior case that houses the battery stack 5B and the cooling plate 61 is substantially the same as that shown in FIG. Also, members common to Example 1 are denoted by the same reference numerals and detailed description thereof is omitted.
  • the battery stack 5B is covered with the inner case 21B, and the cooling plate 61 is fixed to the bottom surface of the inner case 21B by the connecting bar 50B shown in FIGS.
  • the connecting bar 50B is a U-shaped cross-sectional metal plate extending in the vertical direction on the side surface of the inner case 21B, and is locked to the upper surface of the inner case 21B and to the bottom surface of the cooling plate 61. It is fixed by screwing.
  • the bottom surface of the inner case 21B is similarly made of a metal plate for the bottom plate 21b in order to enhance the thermal coupling with the cooling plate 61.
  • the point that the cooling pipe 60 can be used instead of the cooling plate 61 is the same as in the first embodiment.
  • the battery stack 5 ⁇ / b> B is fastened by the fastening member 4 in advance so that both end faces are sandwiched by the end plates 3 in the state where the prismatic battery cells 1 and the separators 2 are alternately stacked.
  • the fastening member 4 is configured by bending a metal plate excellent in fastening force.
  • the separator 2 covers the end surfaces of the rectangular battery cells 1 so that the rectangular battery cells 1 are not electrically connected to each other by the metal plate fastening member 4.
  • the battery laminated body 5B fastened with the fastening member 4 is accommodated in the inner case 21B, as shown in FIG.15 and FIG.16.
  • the heat conductive sheet 12 is preferably interposed between the bottom surface of the battery stack 5B and the bottom plate 21b of the inner case 21B.
  • the buffer member 18 is inserted into the gap between the battery stack 5B and the inner case 21B.
  • a potting material such as urethane resin is filled.
  • the upper surface of the inner case 21 ⁇ / b> B is closed with the cover portion 24.
  • the potting material can be filled after the inner case is first closed by the cover part.
  • the existing battery stack can be housed in the inner case and potted, so that a waterproof structure can be easily achieved.
  • FIGS. 19 to 20 are perspective views of a battery stack 5C according to Example 3, and FIG. 20 is an exploded perspective view of FIG.
  • the battery stack 5 ⁇ / b> C is completely closed so as not to have a waterproof structure, and only the bottom surface, which is a joint surface with the cooling plate 61, is covered with the buffer member 18. (Heat shrink tube)
  • each rectangular battery cell 1 covers the side surface of the outer can with a cylindrical heat-shrinkable tube 52.
  • the top and bottom surfaces of the outer can are not covered with the heat shrinkable tube 52.
  • the work of covering can be greatly saved. That is, conventionally, a battery cell is inserted into a bag-shaped heat-shrinkable tube mainly manually, and the heat-shrinkable tube is heated and shrunk, and the edge of the melted heat-shrinkable tube protrudes from the bottom surface, or It is necessary to be careful not to expose the prismatic battery cell outer can, and it is a troublesome work that requires carefulness.
  • the cylindrical heat-shrinkable tube 52 is used.
  • this square battery cell is laminated
  • the battery stack 5 ⁇ / b> C is covered with the buffer member 18 while the bottom surface of the rectangular battery cell 1 is exposed.
  • the bottom surface of the battery stack 5C is dipped into a potting layer in which the potting material is accumulated, so that the potting material enters and fills the gap between the bottom surfaces, and the resin is cured. Thereafter, the battery stack 5 ⁇ / b> C is placed and fixed on the cooling plate 61 via the heat conductive sheet 12.
  • the battery stack before covering with the buffer material, the battery stack can be first placed and fixed on the cooling plate via the heat conductive sheet, and the buffer material can be disposed thereon. That is, by filling and filling the filler in the state where the cooling plate and the battery stack are joined first, the filler can be filled in the gap between the cooling plate and the battery stack, and more reliably. Thermal coupling can be achieved with no gaps between them.
  • the upper surface of the battery stack 5C is closed by the cover portion 24 as described above. Moreover, it seals watertight through an elastic body as needed.
  • the structure for waterproofing the bottom surface of the battery stack is not limited to the above, and various modes can be used as appropriate.
  • the covering case includes a pair of side plates that cover the side surfaces of the battery stack, a pair of end plates 3 that cover the end surfaces, a cover portion 24 that covers the top surface, and a bottom plate 21b that covers the bottom surface.
  • the battery laminate can be waterproofed by fitting them together and waterproofing the joint surface with packing or the like.
  • a part or the whole may be integrally configured with resin, metal, or the like.
  • the bottom plate may be a cooling plate.
  • it can also be set as the structure which covers the bottom face of a coating
  • the side surface or the whole of the battery stack can be covered with a waterproof bag.
  • a waterproof bag This configuration will be described as Examples 4 and 5 with reference to FIGS.
  • the battery stack 5D fastened with the fastening member 4 is inserted into a bag-shaped waterproof bag 30 and sealed. Thereby, the penetration of water droplets is physically blocked by the waterproof bag 30, and the waterproof structure of the battery stack 5D can be realized. (Waterproof bag 30)
  • the waterproof bag 30 is formed by forming a flexible sheet into a bag shape as shown in FIG.
  • a plastic sheet can be used as the flexible sheet of the waterproof bag 30.
  • the plastic sheet polyethylene (PE), polyimide (PI), polyethyleneimide (PEI), polyethylene terephthalate (PET), or the like can be used. These plastic sheets are characterized by excellent flexibility and heat resistance.
  • the electrolyte discharged when the safety valve of the secondary battery 31 is opened is not melted or causes a chemical reaction.
  • other plastic sheets can be used as the flexible sheet. (Example 5)
  • Example 5 As shown in FIG. 23, the waterproof bag 30B is formed in a strip shape, the side surface of the battery stack 5E is covered with the strip-shaped waterproof bag 30B, and the bottom surface of the battery stack 5E is covered with resin. . If it is this structure, while covering the side surface of the battery laminated body 5E cheaply and waterproofing, a clearance gap is filled with resin in a lower surface, and dew condensation can be avoided reliably. (Moisture permeable waterproof sheet 46)
  • an opening is provided in part and the opening can be closed with the moisture permeable waterproof sheet 46.
  • the moisture-permeable waterproof sheet 46 is made of a material that has air permeability and does not transmit moisture, such as Gore-Tex (trademark).
  • Gore-Tex trademark
  • a circular vent 45 is provided in a part of the waterproof bag 30 and is closed by a moisture permeable waterproof sheet 46.
  • the moisture-permeable waterproof sheet 46 has an adhesive applied on one side and can be attached in a seal shape.
  • the prismatic battery cell opens the safety valve and releases the internal gas, and thus may expand when sealed with the waterproof bag 30. Therefore, by providing such a vent 45, the waterproof bag 30 can be prevented from expanding, and the moisture-permeable waterproof sheet 46 can also prevent water from entering from the vent 45.
  • the sealing structure of the waterproof bag 30 is watertight but not airtight, so that the prismatic battery cell is protected by the waterproof structure and the gas is discharged from the prismatic battery cell while ensuring air permeability. Both are compatible.
  • the vent hole 45 is preferably disposed at a part of the battery stack 5D opposite to the part where the circuit board 6 is placed.
  • 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. 24 shows an example in which a power supply device is mounted on a hybrid vehicle that travels 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 100 that supplies power to the motor 93, and a generator that charges a battery of the power supply device 100.
  • the power supply apparatus 100 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 device 100.
  • 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 device 100.
  • the generator 94 is driven by the engine 96 or is driven by regenerative braking when the vehicle is braked to charge the battery of the power supply device 100. (
  • FIG. 25 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 100 that supplies power to the motor 93, and a generator 94 that charges a battery of the power supply device 100.
  • the motor 93 is driven by power supplied from the power supply device 100.
  • the generator 94 is driven by energy when regeneratively braking the vehicle EV and charges the battery of the power supply device 100. (Power storage device for power storage)
  • this power supply device can be used not only as a power source for a moving body 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 100 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 prismatic battery cells 1 connected in series and / or in parallel.
  • Each battery pack 81 is controlled by a power controller 84.
  • the power supply apparatus 100 drives the load LD after charging the battery unit 82 with the charging power supply CP. For this reason, the power supply apparatus 100 includes a charging mode and a discharging mode.
  • the load LD and the charging power source CP are connected to the power supply device 100 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 100.
  • the power supply 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 100.
  • 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 100 to the load LD.
  • 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 device 100 at the same time.
  • the load LD driven by the power supply device 100 is connected to the power supply device 100 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 100.
  • 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 100.
  • the power controller 84 also includes a communication interface for communicating with external devices.
  • the host device HT is connected according to 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 battery units 82 are connected to the output line OL via the parallel connection switch 85 and are connected in parallel to each other.
  • the power supply device according to the present invention and a vehicle including the power supply device can be 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.
  • a backup power supply device that can be mounted on a rack of a computer server, a backup power supply device for a wireless base station such as a mobile phone, a power storage device for home use and a factory, a power supply for a street light, etc. Also, it can be used as appropriate for applications such as a backup power source such as a traffic light.
  • SYMBOLS 100 Power supply device 1 ... Square battery cell 2 ... Separator 3 ... End plate; 3b ... Packing 4 ... Fastening member 5, 5B, 5C, 5D, 5E ... Battery laminated body 6 ... Bus bar 10 ... Assembly battery 10B ... Battery laminated continuous body DESCRIPTION OF SYMBOLS 12 ... Thermal conductive sheet 14 ... Thermal insulation member 16 ... Covering case 16b ... Overhang
  • Bending piece 43 ... Upper surface holding part 44 ... Fastening connection part 45 ... Vent 46 ... Moisture-permeable waterproof sheet 50, 50B ... Connection bar 51 ... Locking hole 52 ... Heat contraction tube 53, 53B ... Fan 54, 54B ... radiator 55B ... second circulation path 56 ... evaporator 57, 57B ... condenser 58 ... expander; 58B, 58C ... expansion valves 60, 60B, 60C ... cold Pipe 61, 61B, 61C ... Cooling plate 64 ... Three-way valve 65 ... First circulation path 66 ... Heater 67 ... Intermediate heat exchanger 69, 69B, 69C ... Cooling mechanism; 69a ...

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention vise à améliorer la sécurité et la fiabilité par le fait d'empêcher des gouttes de rosée de se former sur la surface d'un élément de batterie. A cet effet, l'invention porte sur un dispositif de source d'alimentation, lequel dispositif comporte un empilement de batteries (5) formé par empilement d'une pluralité d'éléments de batterie carrés (1), et un boîtier de revêtement (6) pour revêtir l'extérieur de l'empilement de batteries (5), dans lequel dispositif : le boîtier de revêtement (16) comporte un boîtier interne (21) dont les surfaces supérieure et d'extrémité sont ouvertes et qui est formé sous la forme d'un U, vu à partir de la section transversale, une partie de revêtement (24) pour fermer la partie d'ouverture à la surface supérieure du revêtement interne (21), et une paire de plaques d'extrémité (3) pour fermer la partie d'ouverture aux surfaces d'extrémité du boîtier interne (21) ; la surface supérieure est fermée à l'aide de la partie de revêtement (24) et les deux surfaces d'extrémité sont fermées à l'aide des plaques d'extrémité (3), tandis que l'empilement de batteries (5) est inséré dans la partie d'ouverture du boîtier interne (21) ; et un élément d'absorption des chocs (18) est disposé entre l'empilement de batteries (5) et le boîtier de revêtement (16). En conséquence, l'espace entre l'empilement de batteries (5) et le boîtier de revêtement (16) est éliminé à l'aide de l'élément d'absorption des chocs (18), et il est possible d'empêcher l'empilement de batteries (5) de subir les effets défavorables provoqués par une formation de rosée au niveau de l'espace précédemment mentionné.
PCT/JP2012/058483 2011-03-31 2012-03-29 Dispositif de source d'alimentation, et véhicule comportant un dispositif de source d'alimentation WO2012133709A1 (fr)

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JP2011-081315 2011-03-31

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Cited By (21)

* Cited by examiner, † Cited by third party
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JPS6260192A (ja) * 1985-09-11 1987-03-16 Nec Corp 半導体メモリセルの駆動方法
CN104078720A (zh) * 2013-03-27 2014-10-01 神钢建机株式会社 电池冷却构造
EP2784869A1 (fr) * 2011-11-21 2014-10-01 Yamaha Hatsudoki Kabushiki Kaisha Bloc d'éléments
EP2843724A1 (fr) * 2013-08-29 2015-03-04 Samsung SDI Co., Ltd. Boîte pour bloc-batteries avec structure de drainage
WO2015079430A1 (fr) * 2013-11-22 2015-06-04 日立オートモティブシステムズ株式会社 Batterie assemblée
JP2015185535A (ja) * 2014-03-26 2015-10-22 株式会社デンソー 電池モジュールおよび電池パック
US9711766B2 (en) 2014-11-27 2017-07-18 Gs Yuasa International Ltd. Energy storage apparatus
CN107834129A (zh) * 2017-10-24 2018-03-23 北京工业大学 一种组合式电池液冷包
WO2019044581A1 (fr) * 2017-08-29 2019-03-07 パナソニックＩｐマネジメント株式会社 Bloc-batterie
EP3482430A4 (fr) * 2016-07-07 2020-01-08 Samsung SDI Co., Ltd Support de module de batterie, module de batterie et véhicule avec un système de batterie
CN111162224A (zh) * 2020-02-13 2020-05-15 上海派能能源科技股份有限公司 一种软包电池模组及用电设备
CN111463519A (zh) * 2020-04-08 2020-07-28 重庆长安新能源汽车科技有限公司 一种电池缓冲隔热冷却板、动力电池包及汽车
CN111684640A (zh) * 2018-02-14 2020-09-18 纬湃科技德国有限责任公司 用于机动车的电池
WO2021092754A1 (fr) * 2019-11-12 2021-05-20 上海汽车集团股份有限公司 Module de stockage d'énergie de batterie et dispositif de stockage d'énergie de batterie
CN112838306A (zh) * 2019-11-22 2021-05-25 Sk新技术株式会社 电池模块
CN113036284A (zh) * 2019-12-23 2021-06-25 本田技研工业株式会社 蓄电装置
CN113140849A (zh) * 2020-01-20 2021-07-20 三星Sdi株式会社 壳体、电池系统、电动车辆和制造壳体的方法
FR3113193A1 (fr) * 2020-07-30 2022-02-04 Faurecia Systemes D'echappement Batterie électrique et véhicule associé
CN114583348A (zh) * 2020-11-30 2022-06-03 丰田自动车株式会社 电池组
EP4358241A1 (fr) * 2022-10-20 2024-04-24 Prime Planet Energy & Solutions, Inc. Module de batterie et son procédé de fabrication
US11996567B2 (en) 2019-11-22 2024-05-28 Sk On Co., Ltd. Battery module

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JP2011023180A (ja) * 2009-07-14 2011-02-03 Sanyo Electric Co Ltd 組電池及びこれを備える車両
JP2012033306A (ja) * 2010-07-29 2012-02-16 Hitachi Vehicle Energy Ltd 蓄電モジュールおよび蓄電装置

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JPH1186900A (ja) * 1997-09-12 1999-03-30 Ngk Insulators Ltd 集合電池
JP2001313018A (ja) * 2000-04-28 2001-11-09 Toyota Motor Corp 電源装置およびその製造方法
JP2007311173A (ja) * 2006-05-18 2007-11-29 Hitachi Vehicle Energy Ltd 二次電池モジュール
JP2009134936A (ja) * 2007-11-29 2009-06-18 Sanyo Electric Co Ltd バッテリシステム
JP2010015760A (ja) * 2008-07-02 2010-01-21 Gs Yuasa Corporation 組電池及び組電池の組立方法
JP2011023180A (ja) * 2009-07-14 2011-02-03 Sanyo Electric Co Ltd 組電池及びこれを備える車両
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Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6260192A (ja) * 1985-09-11 1987-03-16 Nec Corp 半導体メモリセルの駆動方法
EP2784869A1 (fr) * 2011-11-21 2014-10-01 Yamaha Hatsudoki Kabushiki Kaisha Bloc d'éléments
EP2784869A4 (fr) * 2011-11-21 2015-04-22 Yamaha Motor Co Ltd Bloc d'éléments
US9306250B2 (en) 2013-03-27 2016-04-05 Kobelco Construction Machinery Co., Ltd. Battery cooling structure
CN104078720A (zh) * 2013-03-27 2014-10-01 神钢建机株式会社 电池冷却构造
EP2784870A1 (fr) * 2013-03-27 2014-10-01 Kobelco Construction Machinery Co., Ltd. Structure de refroidissement de batterie
JP2014192010A (ja) * 2013-03-27 2014-10-06 Kobelco Contstruction Machinery Ltd 電池冷却構造
KR20140119629A (ko) * 2013-03-27 2014-10-10 코벨코 겐키 가부시키가이샤 전지 냉각 구조
KR102189760B1 (ko) 2013-03-27 2020-12-11 코벨코 겐키 가부시키가이샤 전지 냉각 구조
EP2843724A1 (fr) * 2013-08-29 2015-03-04 Samsung SDI Co., Ltd. Boîte pour bloc-batteries avec structure de drainage
US9590280B2 (en) 2013-08-29 2017-03-07 Samsung Sdi Co., Ltd. Battery pack
JP2015103346A (ja) * 2013-11-22 2015-06-04 日立オートモティブシステムズ株式会社 組電池
WO2015079430A1 (fr) * 2013-11-22 2015-06-04 日立オートモティブシステムズ株式会社 Batterie assemblée
JP2015185535A (ja) * 2014-03-26 2015-10-22 株式会社デンソー 電池モジュールおよび電池パック
US9711766B2 (en) 2014-11-27 2017-07-18 Gs Yuasa International Ltd. Energy storage apparatus
EP3482430A4 (fr) * 2016-07-07 2020-01-08 Samsung SDI Co., Ltd Support de module de batterie, module de batterie et véhicule avec un système de batterie
US11018392B2 (en) 2016-07-07 2021-05-25 Samsung Sdi Co., Ltd Battery module carrier, battery module and vehicle with a battery system
WO2019044581A1 (fr) * 2017-08-29 2019-03-07 パナソニックＩｐマネジメント株式会社 Bloc-batterie
CN107834129B (zh) * 2017-10-24 2023-10-13 北京工业大学 一种组合式电池液冷包
CN107834129A (zh) * 2017-10-24 2018-03-23 北京工业大学 一种组合式电池液冷包
CN111684640A (zh) * 2018-02-14 2020-09-18 纬湃科技德国有限责任公司 用于机动车的电池
WO2021092754A1 (fr) * 2019-11-12 2021-05-20 上海汽车集团股份有限公司 Module de stockage d'énergie de batterie et dispositif de stockage d'énergie de batterie
US11996567B2 (en) 2019-11-22 2024-05-28 Sk On Co., Ltd. Battery module
CN112838306A (zh) * 2019-11-22 2021-05-25 Sk新技术株式会社 电池模块
CN113036284A (zh) * 2019-12-23 2021-06-25 本田技研工业株式会社 蓄电装置
CN113036284B (zh) * 2019-12-23 2023-12-26 本田技研工业株式会社 蓄电装置
CN113140849A (zh) * 2020-01-20 2021-07-20 三星Sdi株式会社 壳体、电池系统、电动车辆和制造壳体的方法
EP3852163A1 (fr) * 2020-01-20 2021-07-21 Samsung SDI Co., Ltd. Boîtier, système de batterie et procédé de fabrication d'un boîtier
CN111162224A (zh) * 2020-02-13 2020-05-15 上海派能能源科技股份有限公司 一种软包电池模组及用电设备
CN111463519A (zh) * 2020-04-08 2020-07-28 重庆长安新能源汽车科技有限公司 一种电池缓冲隔热冷却板、动力电池包及汽车
FR3113193A1 (fr) * 2020-07-30 2022-02-04 Faurecia Systemes D'echappement Batterie électrique et véhicule associé
CN114069147A (zh) * 2020-07-30 2022-02-18 佛吉亚排气系统有限公司 电池及关联的车辆
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
EP4358241A1 (fr) * 2022-10-20 2024-04-24 Prime Planet Energy & Solutions, Inc. Module de batterie et son procédé de fabrication

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