WO2018062226A1 - Module de batterie et bloc-batterie - Google Patents

Module de batterie et bloc-batterie Download PDF

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Publication number
WO2018062226A1
WO2018062226A1 PCT/JP2017/034859 JP2017034859W WO2018062226A1 WO 2018062226 A1 WO2018062226 A1 WO 2018062226A1 JP 2017034859 W JP2017034859 W JP 2017034859W WO 2018062226 A1 WO2018062226 A1 WO 2018062226A1
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WO
WIPO (PCT)
Prior art keywords
battery
module
positive
battery module
terminals
Prior art date
Application number
PCT/JP2017/034859
Other languages
English (en)
Japanese (ja)
Inventor
貴支 鈴木
元靖 小池
倫弘 木村
斉藤　豊
Original Assignee
日立オートモティブシステムズ株式会社
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 日立オートモティブシステムズ株式会社 filed Critical 日立オートモティブシステムズ株式会社
Priority to JP2018542617A priority Critical patent/JP6715942B2/ja
Publication of WO2018062226A1 publication Critical patent/WO2018062226A1/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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • 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
    • H01M10/62—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
    • H01M10/64—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
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H01M50/227—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
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery 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 relates to a battery module including a plurality of rectangular secondary battery cells used as a power source for a hybrid vehicle or an electric vehicle using a motor as a drive source, and a battery pack.
  • Battery modules used as power sources for hybrid vehicles and electric vehicles have excellent energy density in order to increase capacity in limited vehicle space.
  • a rectangular battery cell may be used. While the prismatic battery cell itself is required to be downsized, the battery module is also required to be downsized.
  • Patent Document 1 discloses that the external terminal surface is aligned
  • Patent Document 2 discloses an arrangement structure in which a narrow side surface of a rectangular battery cell is faced.
  • the battery module described in Patent Document 1 has a height dimension (a dimension indicating a distance from a surface on which the external terminal of the rectangular battery cell is disposed to a surface facing the surface on which the external terminal is disposed as a height dimension. Is defined by the size of the rectangular battery cell, and it is difficult to mount in a low-profile vehicle space. This is obvious even if the battery module is rotated 90 degrees toward the narrow side surface of the rectangular battery cell.
  • the battery module with a lateral external terminal surface is obstructed to increase the capacity and density in the vehicle space due to the lateral wiring space in the module for electrical connection between the battery modules.
  • workability of electrical connection between battery modules after the battery modules are arranged is poor.
  • the present invention has been made in view of the above points.
  • the object of the present invention is to mount battery modules at a high density in a low-profile vehicle space and to provide an electrical circuit after being mounted in the vehicle space. It is to improve workability of electrical connection in connection.
  • the battery module of the present invention is a battery module in which the external terminal surface of the rectangular battery cell is directed sideways, and the external terminal surface of the rectangular battery cell and the terminal surface (battery module terminal surface) for electrical connection between the battery modules are projected. The direction is different.
  • the wiring space in the lateral direction inside the modules for electrical connection between the battery modules is reduced, and at the same time, the workability of the electrical connection between the battery modules after the battery modules are arranged in the in-vehicle space. Can be improved. Problems, configurations, and effects other than those described above will be clarified by the following embodiments.
  • the external appearance perspective view of a battery cell The external appearance perspective view of a battery laminated body.
  • the exploded perspective view of a battery laminated body The external perspective view of a bus-bar assembly.
  • the exploded perspective view of a bus-bar assembly The connection schematic diagram of a battery module.
  • the exploded perspective view of a battery module The exploded perspective view of a battery module.
  • the external appearance perspective view of a battery module The disassembled perspective view which shows the example in which the battery cell structure number difference of a battery module is shown.
  • the disassembled perspective view which shows the example in which the battery cell structure number difference of a battery module is shown.
  • the connection schematic diagram of a series type battery module The disassembled perspective view of a series type battery module.
  • connection schematic diagram of a parallel type battery module The disassembled perspective view of a parallel type battery module.
  • the external appearance perspective view of a battery pack The disassembled perspective view of an 8-cell battery module.
  • FIG. 1 is an external perspective view of a battery cell.
  • the battery cell 1 is a square lithium ion secondary battery, and an electrode group having a positive electrode and a negative electrode is housed in an aluminum alloy battery container together with an electrolytic solution.
  • the battery container of the battery cell 1 has a flat box type battery can 1a and a battery lid 1b that seals an opening of the battery can 1a.
  • the battery can 1a is a flat rectangular container formed by deep drawing, and includes a rectangular bottom surface PB, a pair of wide side surfaces PW rising from the long side of the bottom surface PB, and a pair of widths rising from the short side surface of the bottom surface PB. It has a narrow side PN.
  • the battery lid 1b is composed of a rectangular flat plate member and has an upper surface PU.
  • the battery lid 1b is provided with a positive external terminal 1c and a negative external terminal 1d for inputting and outputting voltage.
  • the positive electrode external terminal 1c and the negative electrode external terminal 1d are arranged at positions separated from each other in the long side direction of the battery lid 1a.
  • the positive external terminal 1c and the negative external terminal 1d project from the battery lid 1b on the upper surface PU side, and a nut fastening bolt 1g for fastening the bus bar is provided.
  • the battery lid 1b accommodates the electrode group in the battery can 1a, and is then laser welded to the battery can 1a to seal the opening of the battery can 1a.
  • a gas discharge valve 1e that is cleaved by an increase in internal pressure and discharges gas in the battery container is provided at an intermediate position in the long side direction of the battery lid 1b.
  • the battery cell 1 is entirely covered with an insulating film 1f except for the positive electrode external terminal 1c, the negative electrode external terminal 1d, and the gas discharge valve 1e.
  • FIG. 2 is an external perspective view of the battery cell laminate 2
  • FIG. 3 is an exploded perspective view showing a state in which the battery cell laminate 2 is disassembled.
  • the battery cell laminate 2 is laminated in order from the bottom: the lower plate 3, the lower case 4, the battery cell 1, the center case 5, the battery cell 1, the upper case 6, and the upper plate 7. Is made up of.
  • the positive electrode external terminal 1 c and the negative electrode external terminal 1 d are aligned on the same surface in the Y direction, and the wide side surface PW and the narrow side surface PN of the battery cell are arranged so as to face each other. 2 in the Z direction and 2 in the Z direction.
  • the lower case 4, the center case 5, and the upper case 6 are resin molded products having spaces 4a, 5a, 6a so that the battery cell 1 is inserted and engaged about half in the Z direction, and are sandwiched in the Z direction.
  • the battery cell 1 is covered except for the positive electrode external terminal 1c, the negative electrode external terminal 1d, and the gas discharge valve 1e, and functions as insulation and retention. Further, openings 4b, 5b, and 6b are provided in positions corresponding to the wide side surface PW of the battery cell 1 in the lower case 4, the center case 5, and the upper case 6, respectively.
  • the purpose of this is to insert a member for heat transfer of the battery cell 1, or to insert a space for heat insulation, or a member for heat insulation, or to escape the swelling of the wide side surface PW of the battery cell 1. Provided. It is not always necessary if these objectives are achieved.
  • the lower case 4 is provided with a flange 4c protruding in the X direction for fixing the battery module to the vehicle.
  • the center case 5 is provided with a protrusion 5c for engaging another part.
  • the battery that can be fixed to the vehicle while insulating and holding the plurality of battery cells 1, and the size in the Z direction is suppressed by making the narrow side surface PN of the battery cell 1 correspond to the Z direction.
  • the laminate 2 can be provided.
  • Bus bar assembly 4 is an external perspective view of the bus bar assembly 8
  • FIG. 5 is an exploded perspective view showing a state in which a part of the bus bar assembly 8 is disassembled.
  • the bus bar assembly 8 includes a bus bar base 9, a bus bar 10, and a harness 11 made of a resin member.
  • the bus bar base 9 is provided with a bus bar mounting structure (groove 9a1, hook 9a2) 9a corresponding to the bus bar 10, and the bus bar 10 is engaged therewith.
  • the bus bar base 9 is provided with a harness groove 9b through which the harness 11 can be routed, and the harness 11 is aligned with the harness groove 9b. Further, the bus bar base 9 is provided with a connector fitting projection 9c, and the connector 11c for external output of the harness 11 is engaged.
  • flanges 9d for engaging with the battery stack 2 are provided. Further, similarly to the flange 9d, protrusions 9e for connecting to a cover 14 described later are provided at both ends in the X direction.
  • the bus bar base 9 is a resin molded product having the above functions and shapes and having insulating properties.
  • the bus bar 10 is a battery module terminal 10b provided with a Y-direction through hole 10a corresponding to the external terminals 1c and 1d of the battery cell 1 and a terminal for electrical connection between the battery modules by bending toward the Z-direction surface. And have.
  • the harness 11 is a wiring component group in which a press contact terminal 11a, an electric wire 11b, and a connector 11c for external output are electrically connected to the bus bar 10 for electrical connection.
  • FIG. 6 is a schematic view focusing on the polarities of the external terminals 1c and 1d of the battery cell 1 and the module output terminal of the battery module 12, and FIGS. 7 and 8 are exploded perspective views showing a state in which a part of the battery module 12 is disassembled.
  • FIG. 9 is a perspective view showing a completed state of the battery module 12.
  • the battery module 12 includes two lower battery cells 1 connected in series in the Z direction and two upper battery cells 1 connected in series.
  • the module output terminal 10b (the positive module output terminal 10b1 and the negative module output terminal 10b2) is connected and output.
  • the positive electrode module output terminal 10b1 and the negative electrode module output terminal 10b2 are preferably arranged close to each other in terms of assembly.
  • the bus bar 10 connecting the external terminal of the lower battery cell 1 and the module output terminal 10b is formed so as to bypass the bus bar 10 connecting the external terminal of the upper battery cell 1 and the module terminal 10b.
  • the positive electrode external terminal 1 c and the negative electrode external terminal 1 d of the battery stack 2 are connected to the bus bar through hole 10 c in the bus bar assembly 8, and the battery stack 2 is connected to the flange 9 d in the bus bar assembly 8.
  • the bus bar assembly 8 is engaged with the battery stack 2 so that the protrusions 5c correspond to each other.
  • the bolt 1 g of the battery cell 1 passes through the bus bar through hole 10 c provided in the bus bar assembly 8 and is connected to the bus bar 10 by the nut 13.
  • the press contact terminal 11 a of the harness 11 is disposed between the external connection terminal and the nut 13 and is electrically connected to the press contact terminal 11 a. .
  • the cover 14 which protects and insulates the external terminals 1c and 1d of the battery cell 1 except the module output terminal 10b is attached.
  • the cover 14 is fixed to the bus bar base 8 of the battery stack 2 by engaging, for example, a protrusion 9e provided on the bus bar base 9 and an engagement hole 14a on the cover 14 side.
  • the external terminals are connected to the module output terminals (the positive module output terminal 10b1 and the negative module output terminal) on the side surface side (surface side arranged in the Y direction) of the battery module.
  • 10b2 is provided on the upper surface (surface side arranged in the Z direction) of the battery module 12, that is, the surface on which the wide surface of the battery cell 1 is arranged.
  • the module output terminals (positive module output terminal 10b1, negative module output terminal 10b2) are arranged on the surface side of the battery module on which the wide surface of the battery cell 1 is arranged as in the present invention, so that the module is stable on a large surface. It becomes possible to connect the output terminal 10b and other devices, and the assemblability is improved.
  • the bus bar 10 and the harness 11 are configured to be routed from the battery module side surface (surface arranged in the Y direction) to the upper surface of the battery module 12 (surface arranged in the Z direction).
  • the wiring space on the side surface of the battery module 12 is reduced, and at the same time, the module output terminal is arranged on the upper surface of the battery module 12. Therefore, when the battery module 12 is arranged in the in-vehicle space, The workability of electrical connection between battery modules can be improved.
  • the module output terminals (the positive module output terminal 10b1 and the negative module output terminal 10b2) and the harness connector 11c are collected on the upper surface of the battery module 12. With such a configuration, the workability of the connection between the module output terminal 10b and another device is improved.
  • the positive module output terminal 10b1 and the negative module output terminal 10b2 are arranged close to each other. With such a configuration, the connecting work of the positive and negative module output terminals can be performed collectively, so that the assemblability is improved.
  • two battery cells stacked in the Z direction are defined as a first battery group and a second battery group, respectively.
  • the positive electrode module output terminal 10b1 and the negative electrode module output terminal 10b2 are arranged on the first battery group and the second battery group, respectively.
  • a space is provided on the upper surface portion, and the connector 11c of the harness is disposed between the two sets of module output terminals so that all the external connection portions can be integrated on the upper surface of the battery module 12.
  • the bus bar 10 from the lower battery cell 1 is extended between the positive external terminal 1c and the negative external terminal 1d.
  • the bus bar wiring can be routed along the shortest path, and as a result, the wiring space on the side surface of the battery module 12 can be reduced.
  • the bus bar base 9 is disposed between the bus bar 10 and the battery cell 1. With such a configuration, it is possible to ensure insulation between the battery cell 1 and the bus bar 10 when the bus bar 10 is routed over the battery cell 1.
  • FIG. 10 and 11 show modifications of the present invention, in which the number of battery cells constituting the battery module 12 is changed and the arrangement direction is changed.
  • FIG. 10 shows two battery cells 1 arranged in the X direction. In the case of this configuration, the positive electrode module output terminal 10b1 and the negative electrode module output terminal 10b2 are not collected from each other, but are arranged in the opposite direction on the X direction.
  • FIG. 11 shows two battery cells 1 arranged in the Z direction.
  • the configuration is almost the same as that of the first embodiment, except that the number of cells is different.
  • the connector 11c of the harness 11 is arranged in the space between the module output terminals 10b as in the first embodiment.
  • the number of cells and the way of arranging the cells can be changed without departing from the scope of the claims of the present invention. Further, the number of battery cells constituting the battery module can be changed in three directions.
  • Second Example a second embodiment will be described.
  • the module output terminals 10b are provided in a parallel battery module, but in this embodiment, the module output terminals 10b are configured as a set of series battery modules. This point is different from the first embodiment.
  • FIG. 12 is a schematic view focusing on the polarities of the external terminals 1c and 1d of the battery cell 1 and the module output terminal in the battery module 15 of the second embodiment (hereinafter referred to as the series battery module 15).
  • 4 is an exploded perspective view showing a state in which a part of the series battery module 15 is disassembled.
  • the series battery module 15 is connected to the positive module output terminal 10b1 and the negative module output terminal 10b2 after four battery cells 1 are connected in series.
  • two battery cells stacked in the Z direction were used as the first battery group and the second battery group, respectively.
  • the positive electrode module output terminal 10b1 and the negative electrode module output terminal 10b2 are arranged on one side of the first battery group and the second battery group.
  • the harness connector 11c can be disposed between a set of module output terminals, and all external connection portions can be concentrated on the upper surface of the series battery module 15.
  • ⁇ Third embodiment> Next, a third embodiment will be described.
  • two sets of module output terminals 10b are provided in a parallel battery module, but in this embodiment, one positive module output terminal 10b1 and one negative module output terminal 10b2 are provided in a parallel battery module.
  • the two battery groups are common. This point is different from the first embodiment.
  • FIG. 14 is a schematic diagram focusing on the polarities of the external terminals 1c and 1d of the battery cell 1 and the module output terminal in the battery module 16 of other Example 2 (hereinafter referred to as a parallel battery module 16), and
  • FIG. 4 is an exploded perspective view showing a state in which a part of the parallel battery module 16 is disassembled.
  • the parallel battery module 16 is divided into two battery groups, an upper battery group in the Z direction and a lower battery group in the Z direction, and the battery cell 1 on the lower side in the Z direction. Are connected in series, and the two upper battery cells 1 are connected in series.
  • the upper and lower positive and negative electrodes are connected in parallel, and the two battery groups of the upper battery group and the lower battery group are connected to the two terminals of the positive electrode module output terminal 10b1 and the negative electrode module terminal 10b2, respectively.
  • the module output terminals 10b can be reduced as compared with the first embodiment, and the battery module can be reduced in size and price.
  • the battery module of a serial connection and a parallel connection can be provided by changing the arrangement of a connection.
  • FIG. 16 is a perspective view of the battery pack 17 (a plurality of battery modules in one set) according to the present embodiment
  • FIG. 17 is an exploded perspective view showing a partially exploded state of the battery pack 17,
  • FIG. 18 is for cooling. It is the side view of the X direction which displayed only the battery cell 1, the heat conductive member 18, and the cooling component 19 paying attention.
  • the battery pack 17 is configured such that two battery modules 12 (eight battery cells 1) are consolidated into one so that the battery cell 1 bottom surface PB of the battery module 12 faces each other. It is a thing.
  • a heat conductive member 18 is disposed on the bottom surface PB of the battery cell 1, and the battery cell 1 and the cooling component 19 are thermally connected via the heat conductive member 18.
  • the heat conducting member 18 is, for example, a sheet, rubber, adhesive or the like having good heat conductivity.
  • the cooling component 19 is, for example, a component having a function of circulating a coolant through a metal component such as aluminum having good thermal conductivity.
  • the cooling component 19 of the present embodiment shows a state in which a pipe 19a is connected as an example of circulating the refrigerant.
  • FIG. 18 will be described in a little more detail.
  • FIG. 18 is a view in which only the battery cell 1, the heat conduction member 18, and the cooling component 19 are extracted by cutting along the AA section of FIG.
  • each battery cell 1 can use both one wide surface PW that radiates heat to the outside and the bottom surface PB in contact with the cooling component 19 for cooling. That is, the battery cell 1 can dissipate heat from both the wide surface PW and the cooling component 19 by adopting the structure as in the present embodiment. Therefore, it is possible to provide the battery pack 17 having a very high cooling efficiency.
  • a battery pack having a plurality of battery cells 1 and a battery pack having a cooling function can be provided.
  • the battery module 12 has positive and negative cell terminals 1c and 1d on one surface, and further has a wide surface PW and a narrow surface PN different from the surface on which the positive and negative electrode cell terminals 1c and 1d are arranged.
  • a battery group including a battery group in which the wide surfaces of the battery 1 are opposed to each other and stacked vertically, and positive and negative electrode module terminals 10b1 and 10b2 connected to the positive and negative electrode cell terminals 1c and 1d via wirings 10, respectively.
  • the surface on which the terminals 1c and 1d are arranged is different from the surface on which the positive and negative electrode module terminals 10b1 and 10b2 are arranged, and the positive and negative electrode module terminals 10b1 and 10b2 are arranged on the wide surface side PW.
  • the wiring 10 is disposed between the positive cell terminal 1c and the negative cell terminal 1d.
  • the bus bar wiring can be routed along the shortest path, and as a result, the wiring space on the side surface of the battery module 12 can be reduced.
  • the wiring is the bus bar 10, and the insulating member 9 is disposed between the bus bar 10 and the rectangular battery 1.
  • the battery module 12 there are a plurality of battery groups, and the narrow surfaces of the square batteries of the battery group are arranged to face each other, and the positive and negative electrode module terminals 10b1 and 10b2 are one battery group. It is arranged on the side.
  • the module output terminals 10b can be reduced as compared with the first embodiment, and the battery module can be reduced in size and price.
  • the battery module 12 there are a plurality of battery groups, and the narrow surfaces of the square batteries of the battery group are arranged to face each other, and the positive electrode module terminal 10b1 and the negative electrode module terminal 10b2 are respectively Arranged on another battery group.
  • a space is provided on the upper surface portion, and the harness connector 11c is disposed between the two sets of module output terminals, so that all external connection portions can be integrated on the upper surface of the battery module 12.
  • the battery module 12 faces the surfaces of the battery module that face the surface on which the positive and negative cell terminals 1c and 1d of the rectangular battery 1 are disposed. Arranged. With such a configuration, not only the wide surface PW of the battery cell 1 but also the bottom surface PB side can be used for cooling, so that the cooling efficiency is improved.
  • a cooling channel 19 is provided between the battery modules 12.
  • the bus bar 10 is used. However, it may be replaced with normal wiring.
  • the present invention is not limited to the above-described embodiments, and various designs can be made without departing from the spirit of the present invention described in the claims. It can be changed.
  • the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described.
  • a part of the configuration of an embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of an embodiment.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Secondary Cells (AREA)

Abstract

L'objectif de la présente invention est de monter des modules de batterie à une densité élevée dans un espace interne de véhicule de hauteur faible et d'améliorer la facilité d'utilisation de connexion électrique de connexions électriques après montage dans l'espace interne de véhicule. La présente invention concerne un module de batterie dans lequel des surfaces terminales externes de cellules de batterie carrées se font face latéralement, le module de batterie étant caractérisé en ce que des surfaces de borne externes de cellules de batterie carrées et de surfaces de borne pour connecter électriquement des modules de batterie les uns aux autres (surfaces de borne de module de batterie) sont amenées à faire saillie dans des directions différentes.
PCT/JP2017/034859 2016-09-30 2017-09-27 Module de batterie et bloc-batterie WO2018062226A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018542617A JP6715942B2 (ja) 2016-09-30 2017-09-27 電池モジュール、及び電池パック

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-195012 2016-09-30
JP2016195012 2016-09-30

Publications (1)

Publication Number Publication Date
WO2018062226A1 true WO2018062226A1 (fr) 2018-04-05

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JP2019192558A (ja) * 2018-04-27 2019-10-31 株式会社オートネットワーク技術研究所 接続モジュールおよび蓄電モジュール
EP3675212A1 (fr) * 2018-12-30 2020-07-01 Contemporary Amperex Technology Co., Limited Module de batterie
CN111864130A (zh) * 2019-04-04 2020-10-30 本特勒尔汽车技术有限公司 具有压铆式连接的电池支架
WO2022014385A1 (fr) * 2020-07-17 2022-01-20 株式会社オートネットワーク技術研究所 Module de câblage

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JP2012099477A (ja) * 2010-11-04 2012-05-24 Sb Limotive Co Ltd バッテリモジュール
JP2013196981A (ja) * 2012-03-21 2013-09-30 Lithium Energy Japan:Kk 電源装置
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JP2019192558A (ja) * 2018-04-27 2019-10-31 株式会社オートネットワーク技術研究所 接続モジュールおよび蓄電モジュール
EP3675212A1 (fr) * 2018-12-30 2020-07-01 Contemporary Amperex Technology Co., Limited Module de batterie
US11482738B2 (en) 2018-12-30 2022-10-25 Contemporary Amperex Technology Co., Limited Battery module
CN111864130A (zh) * 2019-04-04 2020-10-30 本特勒尔汽车技术有限公司 具有压铆式连接的电池支架
CN111864130B (zh) * 2019-04-04 2022-09-23 本特勒尔汽车技术有限公司 具有压铆式连接的电池支架
WO2022014385A1 (fr) * 2020-07-17 2022-01-20 株式会社オートネットワーク技術研究所 Module de câblage

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