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WO2013031614A1 - Dispositif d'alimentation électrique ainsi que véhicule équipé de celui-ci, et dispositif de stockage - Google Patents

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

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Publication number
WO2013031614A1
WO2013031614A1 PCT/JP2012/071242 JP2012071242W WO2013031614A1 WO 2013031614 A1 WO2013031614 A1 WO 2013031614A1 JP 2012071242 W JP2012071242 W JP 2012071242W WO 2013031614 A1 WO2013031614 A1 WO 2013031614A1
Authority
WO
WIPO (PCT)
Prior art keywords
power supply
battery
supply device
separator
secondary battery
Prior art date
Application number
PCT/JP2012/071242
Other languages
English (en)
Japanese (ja)
Inventor
一広 藤井
高志 瀬戸
Original Assignee
三洋電機株式会社
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 三洋電機株式会社 filed Critical 三洋電機株式会社
Publication of WO2013031614A1 publication Critical patent/WO2013031614A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0459—Cells or batteries with folded separator between plate-like electrodes
    • 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
    • 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
    • H01M50/262—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
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • 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
    • H01M50/291—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 characterised by their shape
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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.
  • the present invention relates to a vehicle and a power storage device.
  • a main object of the present invention is to provide a power supply device capable of avoiding an increase in size of the power supply device while realizing a waterproof structure on the upper surface of the battery stack in which a plurality of rectangular battery cells are stacked, a vehicle including the power supply device, and a power storage device There is to do.
  • a plurality of secondary battery cells having electrode terminals on the upper surface and having a rectangular outer shape, and the plurality of battery cells Are stacked at the interface between adjacent battery cells to insulate them, and the battery cells and separators are alternately stacked on both end faces of the battery stack.
  • a pair of end plates disposed; a fastening member that fastens the battery stack by fixing the end plates; and a holder cover that covers an upper surface of the battery stack;
  • a locking structure for fixing to the holder cover can be provided. Accordingly, the holder cover can be fixed to the upper surface of the battery stack, and the waterproof structure can be realized by reliably covering the upper surface of the battery stack while suppressing the increase in size of the power supply device.
  • the locking structure can be constituted by a locking hook provided in the separator.
  • the position of the said latching structure can be located outside the electrode terminal of a secondary battery cell.
  • the fastening member partially coats the side surface of the battery stack and partially includes a plurality of upper surface holding portions that press the upper surface of the battery stack. be able to.
  • the entire battery stack can be reliably covered to achieve a waterproof structure, and the upper surface of the battery stack can be partially pressed by a plurality of upper surface holding portions to maintain the upper surface of the battery stack at a constant height. it can.
  • the upper surface holding portion is provided at a position facing the separator, and each separator is provided with a pressed portion that receives the upper surface holding portion. it can.
  • the upper surface holding portion can press the battery stack for each separator, and can disperse and press over the length direction of the battery stack.
  • the pressed portion is provided on the outer surface side of the separator, and each separator has the top plate 2c that presses the upper surface of the secondary battery cell on the inner surface side.
  • each separator has the top plate 2c that presses the upper surface of the secondary battery cell on the inner surface side.
  • the upper surface of a battery laminated body can be pressed via a separator by the upper surface holding part of a fastening member.
  • the upper surface holding portion protrudes in a mountain shape on the inner surface side of the fastening member, and the pressed portion is stepped on the side surface side of the separator.
  • the stepped wall surface portion can be formed into a valley shape that receives the mountain shape of the upper surface holding portion. Accordingly, it is possible to easily guide the mountain-shaped upper surface holding portion to the valley-shaped pressed portion, and it is possible to obtain an advantage of facilitating the operation of guiding the plurality of upper surface holding portions to each pressed portion.
  • the locking hook can be formed on the rear surface side of the valley shape of the wall surface portion.
  • the locking hook can be easily protruded to the inner surface side, and the locking hook is further protruded inward by fixing the fastening member, so that the locking hook can be more firmly locked.
  • the holder cover can hold the bus bar for connecting the electrode terminals to each other.
  • the bus bar of a secondary battery cell can also be fixed simultaneously, and the workability
  • a circuit board on which an electronic circuit electrically connected to the secondary battery cell is mounted, and a board storage area for holding the circuit board are formed.
  • the upper surface of the holder cover can be water-tightly closed with the substrate holder.
  • an elastic member can be interposed between the substrate holder and the upper surface of the holder cover.
  • the substrate holder can be provided with a gas duct that communicates with a safety valve that discharges the gas inside the secondary battery cell.
  • a safety valve that discharges the gas inside the secondary battery cell.
  • the vehicle according to the thirteenth aspect is equipped with the power supply device.
  • the power storage device according to the fourteenth aspect is equipped with the power supply device.
  • FIG. 3 is a vertical sectional view taken along the line VII-VII of the battery stack of FIG.
  • FIG. 3 is a vertical sectional view taken along line VIII-VIII of the battery stack of FIG.
  • the embodiment described below exemplifies a power supply device for embodying the technical idea of the present invention, a vehicle including the power supply device, and a power storage device
  • the present invention includes a power supply device, a vehicle including the power supply device
  • the power storage device is 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 is 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 to 8 illustrate an example in which the power supply device 100 according to the first embodiment of the present invention is applied to an in-vehicle power supply device.
  • 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. 2 shows a perspective view of each battery stack 5 constituting the assembled battery 10.
  • the battery stack 5 is fixed on a cooling plate 61 for cooling it.
  • the battery stack 5 has a connection structure for fixing on the cooling plate 61 (details will be described later).
  • FIG. 3 shows an exploded perspective view of the state in which the cooling plate 61 is removed from the battery stack 5 as viewed obliquely from above
  • FIG. 4 shows a perspective view of the same seen from obliquely below.
  • FIG. 5 shows an exploded perspective view of the battery laminate 5 with the fastening member 4 and the like removed
  • FIG. 6 shows an exploded perspective view of the laminated structure of the separator 2 and the secondary battery cell 1 constituting the battery laminate 5.
  • each battery stack 5 is interposed between the secondary battery cells 1 by interposing a plurality of secondary battery cells 1 and a surface on which the plurality of secondary battery cells 1 are stacked together.
  • the battery stack 5 has a plurality of secondary battery cells 1 stacked via an insulating separator 2. 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 in which a plurality of secondary battery cells 1 and separators 2 are alternately stacked by interposing a separator 2 that insulates adjacent secondary battery cells 1 on the stacking surface of the secondary battery cells 1.
  • the body 5 is assumed. (Secondary battery cell 1)
  • the secondary battery cell 1 has an outer can that forms the outer shape of a rectangular shape that is thinner than the width.
  • Positive and negative electrode terminals 1b are provided on the sealing plate 1a for closing the outer can, and a safety valve 1c is provided between the electrode terminals 1b.
  • the safety valve 1c 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 can be stopped by opening the safety valve 1c.
  • the unit cell constituting the secondary 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, but 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 secondary battery cells 1 that are stacked and constitute the battery stack 5 are connected in series by connecting adjacent positive and negative electrode terminals 1b with a bus bar 6.
  • the assembled battery 10 in which the adjacent secondary battery cells 1 are connected in series can increase the output voltage and increase the output. However, the assembled battery can connect adjacent secondary battery cells in parallel, or can combine series connection and parallel connection.
  • the secondary battery cell 1 is manufactured with a metal outer can.
  • an insulating separator 2 is sandwiched between the secondary battery cells 1 in order to prevent shorting of the outer can of the adjacent secondary battery cell 1.
  • the outer can of the secondary battery cell can be made of an insulating material such as plastic. In this case, since it is not necessary for the secondary 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)
  • the separator 2 is a spacer that laminates adjacent secondary battery cells 1 by being electrically and thermally insulated.
  • the separator 2 is made of an insulating material such as plastic, and is disposed between the adjacent secondary battery cells 1 to insulate the adjacent secondary battery cells 1 from each other.
  • the separator 2 forms a battery cell storage space 2 d for storing the secondary battery cell 1 on both sides.
  • the separator 2 includes a flat plate 2 a having a size substantially equal to the main surface of the secondary battery cell 1, a side wall 2 b covering the side surface of the secondary battery cell 1, and a part of the top surface of the secondary battery cell 1. And a top plate 2c to be covered.
  • the separator 2 sandwiches the secondary battery cell 1 between the two separators 2 and closes the side surface portion. Therefore, the side wall 2b is substantially the same size as the side surface of the secondary battery cell 1, and the flat plate 2a is fixed to the substantially center of the side wall 2b, so that each battery cell storage space 2d uses half of the side wall 2b. About 1/2 of the side surface of the secondary battery cell 1 is covered. Moreover, the upper surface of the battery cell storage space 2d covers the adjacent secondary battery cells 1 so that the electrode terminal 1b and the safety valve 1c are exposed while partially covering the sealing plate 1a of the secondary battery cell 1 with the top plate 2c. The upper part of the interface is covered. On the other hand, the bottom surface side is opened to expose the bottom surface of the secondary battery cell 1. This is because a cooling plate 61, which will be described later, is arranged in the opening portion of the bottom surface to cool the bottom surface of each secondary battery cell 1 by heat exchange. (Overhang 2e)
  • an overhanging portion 2 e is provided in which the side wall 2 b is extended from the lower side surface to the bottom surface so that the corner portion can be covered for positioning the secondary battery cell 1.
  • the lower end of the flat plate 2 a is slightly shorter than the secondary battery cell 1 between the portions where the protruding portions 2 e are provided at the left and right lower ends of the separator 2.
  • the side wall 2b of the separator 2 is formed slightly higher than the secondary battery cell 1 as shown in the exploded perspective view of FIG.
  • the top plate 2 c is fixed at a position that is substantially the same height as the secondary battery cell 1.
  • the side walls 2b on both sides protrude slightly from the upper surface of the battery stack 5 in a state where the secondary battery cells 1 are stored in the battery cell storage space 2d of the separator 2.
  • the holder cover 25 is fixed to the upper surface using the protruding side wall 2b as a guide.
  • a locking hook 31 for fixing the holder cover 25 is also provided on the inner surface side of the side wall 2b, that is, the side on which the top plate 2c is provided (details will be described later).
  • a pressed portion 32 for receiving the upper surface holding portion 43 of the fastening member 4 is formed on the outer surface side of the side wall 2b.
  • the pressed portion 32 is formed in a stepped shape, has a stepped surface 33 on a horizontal surface, and a wall surface portion 34 formed in a valley shape on the back side of the stepped surface 33.
  • Each separator 2A uses a plurality of the same shape. However, as shown in the exploded perspective view of FIG. 5, the shape of only the separator disposed at the interface between the secondary battery cell 1 and the end plate 3 on the end surface of the battery stack 5 is changed.
  • the end surface separator 2B insulates the metal end plate 3 from the end surface secondary battery cell 1.
  • Each end face separator 2B forms the battery cell storage space 2d only on one side, and the other side is a flat plate in contact with the end plate 3, and the side wall 2b does not protrude.
  • a projection 2f for fixing a holder cover 25 (described later) is formed above the projection.
  • the battery laminated body does not necessarily need to interpose a separator between secondary battery cells.
  • secondary batteries adjacent to each other can be formed by forming the outer can of the secondary battery cell with an insulating material, or covering the outer periphery of the outer can of the secondary battery cell with a heat-shrinkable tube, insulating sheet, insulating paint, etc. By isolating the cells, a separator can be eliminated.
  • a method of cooling the battery stack through a cooling plate cooled using a refrigerant or the like is not based on an air cooling method in which cooling air is forced between the secondary battery cells to cool the secondary battery cells.
  • a pair of end plates 3 are arranged on both end faces of the battery laminate 5 in which the secondary battery cells 1 and the separators 2 are alternately laminated and the waterproof sheet 38 is attached to the side surface.
  • the battery stack 5 is fastened so as to be sandwiched from both sides.
  • Both side portions of the end plate 3 are provided with a bent portion 3b that is bent in a U shape in a sectional view, and the bent portion 3b covers the side wall 2b of the end face separator 2B.
  • the end plate 3 is made of a material that exhibits sufficient strength, for example, metal.
  • the end plate 3 may be provided with a fixing structure for fixing to the lower case 71 shown in FIG. 1 and a fixing structure such as a holder cover 25 arranged on the upper surface. (Laminate connecting piece 7)
  • the end plate 3 has screw holes at four corners for fixing to the fastening member 4. Furthermore, as shown in the exploded perspective view of FIG. 5, the laminated body connection piece 7 for connecting battery laminated bodies 5 can also be fixed using the same screw hole.
  • the laminated body connecting piece 7 is a metal piece having almost the same height as the end plate 3, and a part of the laminated body connecting piece 7 is opposite to the fastening member 4 on the side surface side of the battery laminated body 5, that is, on the surface side of the end plate 3.
  • a bent piece 7b bent so as to protrude is provided. In the example of FIG.
  • three bent pieces 7 b are provided in the vertical direction, and a battery stack adjacent to the stacking direction of the secondary battery cells 1 by opening a screw hole in a part of the bent pieces 7 b. 5 can be connected through this screw hole.
  • the battery stacks 5 can be connected to each other by using other connection structures as well as by screwing through screw holes. (Fastening member 4)
  • the fastening members 4 are arranged on both side surfaces of the battery laminate 5 whose both end surfaces are covered with the end plates 3, and are fixed to the pair of end plates 3. Conclude.
  • the fastening member 4 includes a main body 41 that covers the side surface of the battery stack 5, and a bent piece that is bent at both ends of the main body 41 and fixed to the end plate 3. 42, a plurality of upper surface holding portions 43 provided on the upper edge of the main body portion 41, a lower surface overhanging portion 45 that is bent at the lower edge of the main body portion 41 and holds a part of the lower surface of the battery stack 5, and below
  • the fastening connection portion 44 is provided to protrude.
  • Such a fastening member 4 is made of a material having sufficient strength, for example, a metal fastener. (Upper surface holding part 43)
  • a plurality of upper surface holding portions 43 for pressing the upper surface of the battery stack 5 are partially provided on the upper edge of the fastening member 4.
  • a plurality of wavy slits are provided in the vicinity of the upper end edge of the main body portion 41, and the rectangular portion between the slit and the upper end is protruded in a mountain shape.
  • Such an upper surface holding part 43 can be integrally formed by processing the fastening member 4 of a metal plate.
  • the top surface of the battery stack 5 is pressed by the top plate 2c of the separator 2 by pressing the step surface 33.
  • the upper surface holding portion 43 of the fastening member 4 indirectly presses the upper surface of the battery stack 5 via the separator 2.
  • an advantage that the pressed portion 32 provided for each separator 2 can be surely pressed for each separator 2 is obtained.
  • the upper surface of the battery stack 5 for each separator 2 can be brought close to a certain height.
  • the upper surface holding portion 43 is protruded in a mountain shape on the inner surface side of the fastening member 4, while the pressed portion 32 that receives this is formed in a valley shape along the mountain shape on the side surface side of the separator 2.
  • the fastening member 4 is mounted on the side surface of the battery stack 5, the chevron shape of each upper surface holding portion 43 can be easily guided to the valley-shaped pressed portion 32, and the plurality of upper surface holding portions 43 are covered for each separator 2. The operation of inserting into the pressing portion 32 can be easily performed.
  • a waterproof sheet 38 is affixed to the side surface of the battery stack 5 as shown in FIG.
  • a side surface 2b of the separator 2 is exposed on the side surface of the battery stack 5 by stacking the secondary battery cells 1 via the separator 2. Therefore, the gap generated between the side walls 2 b of the separator 2 is closed by the waterproof sheet 38.
  • the waterproof sheet 38 is made of a material having waterproofness and insulating properties and further having elasticity and stretchability.
  • it can be made of a resin such as a rubber sheet.
  • a waterproofing sheet 38 can absorb a change part by elastically deforming, and waterproofness can be maintained.
  • the rubber sheet for example, a flexible material such as EPDM or PVC and an acrylic double-sided tape attached can be used.
  • the waterproof sheet 38 is attached only to the side surface of the battery stack 5.
  • the end surface of the battery stack 5 is covered with the end plate 3 as described above.
  • the waterproof sheet 38 is elastically deformed by fixing the surface of the waterproof sheet 38 affixed to the side wall 2b of the end face separator 2B with the fastening member 4 while being sandwiched between the bent portions 3b of the end plate 3.
  • a watertight structure capable of avoiding the situation of being flooded from the side surface of the end plate 3 is also realized on the end surface of the battery stack 5.
  • the waterproof sheet 38 is preferably provided with an adhesive layer on the surface covering the battery stack 5.
  • the adhesive tape can be attached easily by using an adhesive tape.
  • the waterproof sheet 38 has a lower end edge bent in an L shape in cross-sectional view.
  • the bent portion covers the corner from the side surface to the bottom surface of the battery stack 5.
  • a heat conductive sheet (details will be described later) disposed on the bottom surface of the battery stack 5 is disposed so as to overlap the bent portion 38 b of the waterproof sheet 38.
  • FIG. 7 shows a vertical sectional view taken along line VII-VII in FIG. (Locking hook 31)
  • the holder cover 25 is locked with the separator 2 by a locking structure.
  • the locking structure is constituted by a locking hook 31 provided on the separator 2.
  • the locking hook 31 is provided on the back surface of the wall surface portion 34, and has a claw-shaped tip protruding toward the center of the separator 2.
  • the position of the locking structure is positioned outside the electrode terminal 1b of the battery cell. (Hook receiving part 35)
  • the locking hook 31 is locked to a hook receiving portion 35 provided on the holder cover 25.
  • the hook receiver 35 is provided on the side surface of the holder cover 25.
  • the holder cover 25 is provided between the side walls 2b protruding from the left and right sides. Inserted and fixed.
  • the side surface of the holder cover 25 is also formed in an uneven pattern along the valley shape. Such an uneven pattern can also be used for positioning the holder cover 25.
  • a hook receiving portion 35 is provided at a portion where the concave portion of the concave-convex pattern, that is, the back surface of the valley-shaped pressed portion 32 is inserted.
  • the holder cover 25 is provided with an opening for connecting the electrode terminal 1b of the secondary battery cell 1.
  • a plurality of bus bars 6 for connecting the electrode terminals 1 b to each other are formed on the holder cover 25 by insert molding. Thereby, by fixing the holder cover 25 to the upper surface of the battery laminated body 5, the bus bar 6 and the electrode terminal 1b can be connected at the same time, which is useful for improving workability.
  • an opening is provided on the bottom surface of the holder cover 25 at a position corresponding to the safety valve 1c of each battery cell. This opening communicates with a gas duct 26 incorporated in a substrate holder 27 fixed to the upper surface of the holder cover 25.
  • the holder cover 25 is preferably fixed to the upper surface of the battery stack 5 in a watertight state. Therefore, as shown in the cross-sectional view of FIG. 7, it is designed so that no gap is generated when the locking hook 31 provided on the separator 2 is locked to the hook receiving portion 35 of the holder cover 25. Moreover, you may arrange
  • the waterproof sheet 38 has a plurality of cutouts 38 c at the upper end portion.
  • the notch 38c is provided at a position corresponding to the locking hook 31 so that the locking hook 31 can be locked with the hook receiving portion 35 without sandwiching the waterproof sheet 38, in other words, the locking hook 31 and the hook receiving portion. It is formed so as not to inhibit the locking with 35.
  • the substrate holder 27 is fixed to the upper surface of the holder cover 25.
  • An elastic member 30 is interposed between the holder cover 25 and the substrate holder 27. Accordingly, as shown in an enlarged view in the cross-sectional view of FIG. 7, the waterproof structure is reliably exhibited by filling the gap between the upper surface of the battery stack 5 and the substrate holder 27 with the elastic member 30.
  • Such an elastic member 30 can be a packing, an O-ring, a gasket, or the like.
  • the holder cover 25 and the substrate holder are first covered with the holder cover 25 on the upper surface of the battery stack 5. 27, the circuit board 28 is accommodated, the gas duct 26 is communicated, etc. while the holder cover 25 is subjected to correspondence to the electrode terminal 1b, the safety valve 1c, and the like on the upper surface of the battery stack 5 It can be carried on the 27 side, and a plurality of functions for realizing the waterproof structure can be shared. As a result, the waterproof structure can be easily realized. (Gas duct 26)
  • the substrate holder 27 also serves as a gas duct 26 for safely discharging the gas discharged from the safety valve 1c of the secondary battery cell 1 to the outside.
  • a gas duct 26 communicating with the safety valve 1c of the secondary battery cell 1 inside the substrate holder 27, connecting the gas duct 26 to the safety valve 1c of each secondary battery cell 1, and piping the gas duct 26 to the outside.
  • the gas discharged when the internal pressure of the secondary battery cell 1 rises can be safely discharged to the outside.
  • the gas duct is not limited to the structure provided integrally with the substrate holder 27, and the substrate holder and the gas duct can be provided separately.
  • the substrate holder 27 is provided with a substrate storage area 27 b for storing the circuit board 28.
  • the circuit board 28 stored in the board storage area 27b is closed on the upper surface by a shield plate 29 described later. (Circuit board 28)
  • a circuit board 28 on which an electronic circuit electrically connected to the secondary battery cell 1 is mounted is provided.
  • the circuit board 28 is a low voltage circuit on which a protection circuit for battery cells constituting the battery stack 5 is mounted.
  • the circuit board 28 can be completely waterproofed by coating with a resin having thermal conductivity.
  • a resin having thermal conductivity for example, a potting material can be preferably used.
  • the thermal conductivity of the electronic component is increased, which is advantageous in terms of heat dissipation.
  • this resin in a state of being thermally coupled to the shield plate 29, the thermal conductivity can be further improved and the heat dissipation can be enhanced.
  • a shield plate 29 is placed on the upper surface of the substrate holder 27 to close the substrate storage area 27b.
  • the shield plate 29 is preferably a metal plate having excellent conductivity, such as an aluminum plate. Thus, disturbance and noise are blocked by the shield plate 29, and the circuit board 28 is electrically shielded to ensure stable operation.
  • the substrate storage area 27b It is also preferable to seal the substrate storage area 27b with the shield plate 29.
  • the shield plate 29 also for sealing the circuit board 28
  • the physical circuit board 28 can be protected at the same time, and the configuration can be simplified and the member cost can be reduced.
  • the region where the shield plate 29 is disposed is limited only to the upper surface of the battery stack 5, thereby adding an additional member for noise suppression.
  • the waterproof structure is realized by dividing the substrate holder 27 and the holder cover 25 into two parts, but these can also be configured integrally.
  • the waterproof structure of the upper surface of the battery stack 5 can be realized by fixing the lower surface of the integrated holder cover 25 to the upper surface of the battery stack 5 via packing or the like. (Bottom of battery stack 5)
  • the cooling plate 61 is fixed to the bottom surface of the battery stack 5 via a heat conductive sheet. 7 to 8 show cross-sectional views of the battery stack 5 provided with the cooling plate 61.
  • the battery laminated body 5 presses the upper surface with the holder cover 25, and the bottom surface thereof is brought into close contact with the cooling plate 61.
  • the top surfaces of the battery cells constituting the battery stack 5 can be arranged on the same plane.
  • the connection surface with the cooling plate 61 can be made flat, and the stability and reliability of thermal coupling can be improved.
  • the bottom surface of the battery stack 5 is provided with a bottom surface projecting portion 45 of the fastening member 4 that projects from the side edge to the bottom surface at the corner of the battery stack 5.
  • the lower surface of the battery stack 5 is opened in a region sandwiched between the pair of lower surface projecting portions 45, and the cooling plate 61 is disposed in the opening.
  • the opening has a size that can be closed by the cooling plate 61.
  • a heat transfer member such as a heat conductive sheet 12 is interposed between the battery stack 5 and the cooling plate 61 as shown in the sectional views of FIGS.
  • 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. By doing in this way, between the battery laminated body 5 and the cooling plate 61 is electrically insulated.
  • the outer can of the square battery cell 1 is made of metal and the cooling plate 61 is made of metal, it is necessary to insulate the battery so as not to conduct at the bottom surface of the square battery cell 1.
  • 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 surface of the heat conductive sheet 12 is elastically deformed, and there is no gap at the contact surface between the battery stack 5 and the cooling plate 61, so that the thermal coupling state can be improved satisfactorily.
  • the positional relationship between the members on the bottom surface of the battery stack 5 is such that the heat conductive sheet 12 is formed on the bottom surface of the outer can of the secondary battery cell 1.
  • the bent portion 38b of the waterproof sheet 38 disposed between and attached to the separator 2 is positioned so as to cover the interface between the protruding portion 2e of the separator 2 and the heat conductive sheet 12.
  • a waterproof structure can be realized without fixing the cooling plate 61.
  • a waterproof sheet 28 is attached to the bottom surface of the battery stack 5 in which the secondary battery cells 1 and the separators 2 are stacked, and the battery stacking is performed with the fastening member 4 after the waterproof sheet 28 is pasted. Fasten the body.
  • the lower surface overhanging portion 45 of the fastening member 4 is preferably extended so as to cover the interface between the overhanging portion 2 e of the separator 2 and the heat conductive sheet 12.
  • the bent portion 38b of the waterproof sheet 38 and the heat conductive sheet 12 are pressed between the lower surface overhanging portion 45 and the battery stack 5 by the weight of the battery stack 5 to improve the sealing performance.
  • 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.
  • a connecting bar 50 in which a locking hole 51 capable of locking a locking piece is formed is used.
  • the fastening member 4 can be easily fixed to the cooling plate 61 by inserting a hook-like locking piece into the locking hole 51 and locking it.
  • 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.
  • 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. (Refrigerant circulation mechanism)
  • the cooling plate 61 is provided with a refrigerant circulation mechanism therein.
  • FIG. 9 shows an example of such a refrigerant circulation mechanism.
  • the battery stack 5 in which a plurality of secondary battery cells 1 are stacked is arranged on the upper surface of the cooling plate 61.
  • the cooling plate 61 is arranged in a thermally coupled state to the secondary battery cells 1 constituting the battery stack 5.
  • the cooling plate 61 is provided with a refrigerant pipe, and the refrigerant pipe is connected to a cooling mechanism 69.
  • the assembled battery 10 can be effectively cooled directly by bringing the battery stack 5 into contact with the cooling plate 61.
  • each member disposed on the end face of the battery stack can be cooled together.
  • the cooling plate 61 including the cooling pipe 60 that circulates the refrigerant therein is brought into contact with the bottom surface of the battery stack 5 to be cooled, thereby improving heat dissipation and stable power supply apparatus even at high output.
  • the cooling plate 61 is a radiator for conducting heat of the secondary battery cell 1 to dissipate it to the outside.
  • 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.
  • 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 end edge, thereby forming three straight lines.
  • 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 meandering cooling pipe can be divided at a folded portion to form a plurality of cooling pipes. Thereby, since the meandering portion can be eliminated, the weight can be reduced. At this time, 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 secondary battery cells 1. That is, a region where the cooling plate 61 adjusts the thermal energy absorbed from the secondary battery cell 1 to efficiently cool the secondary battery cell whose temperature is high, for example, the secondary battery cell in the center, and the temperature is low. For example, the cooling of the secondary battery cells at both ends is reduced to reduce the temperature difference between the secondary battery cells. As a result, the temperature unevenness of the secondary battery cells can be reduced, and a situation in which deterioration of some of the secondary battery cells proceeds and overcharge and overdischarge can be avoided.
  • cooling plates can be arranged on both side surfaces of the secondary battery cell, or can be arranged only on the side surfaces.
  • a cooling pipe that allows the internal refrigerant to pass therethrough can be directly disposed on the lower surface of the battery stack without using a metal plate such as a cooling plate.
  • the power supply device 100 seals the battery stack 5 to have a waterproof structure, and protects the secondary battery cell 1 from condensation and the like.
  • the above-described waterproofing of the electrode terminal 1b, separation of the gas duct 26 and the circuit board 28, and waterproofing of the circuit board 28 are selected. How to do so is a problem. Specifically, since the gas discharged from the gas duct 26 can adversely affect the circuit board 28, it is necessary to separate the gas duct 26 and the region that houses the circuit board 28. However, it is not easy to achieve separation of the gas duct 26 and the circuit board 28, waterproofing of the electrode terminal 1b, and downsizing of the power supply device 100 at the same time.
  • the power supply device 100 fixes the holder cover 25 that covers the upper surface of the battery stack 5 via the locking hook 31 positioned outside the electrode terminal 1b.
  • the substrate holder 27 is fixed to the upper surface of the cover 25 through the elastic member 30 in a watertight manner.
  • the substrate holder 27 is fixed to the upper surface of the holder cover 25 so as to partition the space between the holder cover 25 and the substrate holder 27 into a region where the electrode terminal 1b is located and a region where the gas duct 26 is formed. Can do.
  • a substrate storage area 27 b is formed on the upper surface of the substrate holder 27, and the circuit board 28 can be disposed in a state separated from the gas duct 26.
  • the wiring connecting the circuit board 28 and the electrode terminal 1 b is configured to be inserted through an opening (not shown) formed in the board holder 27. Further, since the circuit board 28 is covered with the resin while being stored in the board storage area 27b, the circuit board 28 can be completely waterproofed.
  • the electrode cover 1b is waterproofed, the gas duct 26 and the circuit board 28 are separated, and the circuit board 28 is covered with a simple configuration in which the upper surface of the battery stack is covered with the holder cover 26 and the substrate holder 27. Since waterproofing can be achieved, it is possible to obtain an advantage that an enlargement of the power supply device can be avoided.
  • 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. 10 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. 11 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 this figure includes a traveling motor 93 for traveling 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. In the example of FIG. 12, 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 the vehicle including the power supply device, and the power storage device are 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 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 ... Secondary battery cell; 1a ... Sealing plate; 1b ... Electrode terminal; 1c ... Safety valve 2, 2A ... Separator; 2B ... End face separator 2a ... Flat plate; 2b ... Side wall; Cell storage space 2e: Overhanging portion; 2f ... Projection 3 ... End plate; 3b ... Bending portion 4 ... Fastening member 5 ... Battery stack 6 ... Bus bar 7 ... Laminate connecting piece; 7b ... Bending piece 10 ... Battery assembly; 10B: Battery laminated continuum 12 ... Thermal conductive sheet 25 ... Holder cover 26 ... Gas duct 27 ... Substrate holder; 27b ... Substrate storage region 28 ...
  • Circuit board 29 ... Shield plate 30 . Elastic member 31 ... Locking hook 32 ... Pressed portion 33 ... Stepped surface 34 ... Wall surface portion 35 ... Hook receiving portion 38 ... Waterproof sheet; 38b ... Bent portion; 38c ... Notch 41 ... Main body portion 42 ... Bending piece 43 ... Upper surface holding portion 44 ... Fastening connecting portion 45 ... Lower surface Zhang Lead-out part 50 ... Connecting bar 51 ... Locking hole 60 ... Cooling pipe 61 ... Cooling plate 69 ... Cooling mechanism 70 ... Exterior case 71 ... Lower case 72 ... Upper case 73 ... End face plate 74 ... Hard part 81 ... Battery pack 82 ... Battery Unit 84 ... Power controller 85 ... Parallel connection switch 93 ...
  • Motor 94 Generator 95 ... DC / AC inverter 96 ... Engine EV, HV ... Vehicle LD ... Load; CP ... Power supply for charging; 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne une structure étanche de face supérieure d'empilement de batterie dans laquelle est empilée une pluralité de cellules de batterie de forme rectangulaire. Le dispositif d'alimentation électrique est équipé : d'une pluralité de cellules de batterie secondaire (1) possédant une borne d'électrode (1b) sur une face supérieure, et prenant extérieurement une forme rectangulaire; de séparateurs (2) qui sont insérés à l'interface des cellules de batteries adjacentes entre elles afin de les isoler, dans un état d'empilement de la pluralité de cellules de batterie; d'une paire de plaques d'extrémité (3) individuellement disposées sur les deux faces extrémité de l'empilement de batterie (5) formé par un empilement en alternance des cellules de batterie et des séparateurs (2); d'un élément de serrage (4) qui serre l'empilement de batterie (5) par fixation des plaques d'extrémité (3) entre elles; et d'une couverture de support (25) qui revêt la face supérieure de l'empilement de batterie (5). Les séparateurs (2) sont équipés d'une structure de verrouillage destinée à les fixer à la couverture de support (25).
PCT/JP2012/071242 2011-08-26 2012-08-22 Dispositif d'alimentation électrique ainsi que véhicule équipé de celui-ci, et dispositif de stockage WO2013031614A1 (fr)

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