WO2023006064A1 - 电池组件、电池包和车辆 - Google Patents

电池组件、电池包和车辆 Download PDF

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Publication number
WO2023006064A1
WO2023006064A1 PCT/CN2022/108928 CN2022108928W WO2023006064A1 WO 2023006064 A1 WO2023006064 A1 WO 2023006064A1 CN 2022108928 W CN2022108928 W CN 2022108928W WO 2023006064 A1 WO2023006064 A1 WO 2023006064A1
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WO
WIPO (PCT)
Prior art keywords
heat
battery
bracket
hole
battery assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2022/108928
Other languages
English (en)
French (fr)
Inventor
舒元茂
吴艳凤
郑卫鑫
鲁志佩
孙华军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BYD Co Ltd
Original Assignee
BYD Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BYD Co Ltd filed Critical BYD Co Ltd
Priority to AU2022317598A priority Critical patent/AU2022317598B2/en
Priority to EP22848668.4A priority patent/EP4343943A4/en
Priority to CA3223294A priority patent/CA3223294A1/en
Priority to BR112023026525A priority patent/BR112023026525A2/pt
Priority to JP2023578697A priority patent/JP7714701B2/ja
Priority to KR1020237041015A priority patent/KR102927068B1/ko
Publication of WO2023006064A1 publication Critical patent/WO2023006064A1/zh
Priority to US18/532,624 priority patent/US20240128535A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/6553—Terminals or leads
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • 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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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
    • 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
    • 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
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • 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 disclosure relates to a battery assembly, a battery pack and a vehicle.
  • the battery components on the market are all arranged in sequence by a plurality of battery cells, and the battery cells are electrically connected through connectors.
  • the temperature rise of the connector may be too high and heat accumulation may occur, so that the heat on the connector will be transmitted to the pole core inside the battery cell through the pole of the battery cell, resulting in battery failure.
  • Core internal temperature is too high.
  • the capacity of the battery cells will decay faster, affecting the cruising range. In severe cases, it will affect the safety of the battery pack and the safety of the vehicle.
  • An object of the present disclosure is to provide a new technical solution for a battery assembly.
  • Another object of the present disclosure is to provide a new technical solution for a battery pack, which includes the battery assembly.
  • a battery assembly comprising: a plurality of electric cells; a connecting member, the electric cells are electrically connected through the connecting member; a heat conducting member, the electric cells have a casing, and the connecting
  • the heat conduction element is provided between the element and the shell, and the heat conduction element is thermally connected to the connecting element and the shell.
  • the heat-conducting element has opposite first sides and second sides, the first side of the heat-conducting element is in contact with or bonded to the housing, and the connecting element is arranged on the heat-conducting element The second side of the heat-conducting element, the connecting element abuts or adheres to the second side of the heat-conducting element.
  • connection member and the housing is in contact with the heat conduction member, and the other is bonded to the heat conduction member.
  • the battery cell has an electrode terminal
  • the battery assembly further includes: a bracket, the bracket is arranged at the same end of the plurality of battery cells, and the connector is arranged on the bracket away from the One side of the battery cell, the bracket is provided with a first through hole corresponding to the electrode terminal, and the electrode terminal is passed through the corresponding first through hole and electrically connected with the connector;
  • the bracket is further provided with a second through hole corresponding to the heat conduction element, and the heat conduction element passes through the corresponding second through hole and is connected to the shell and the connecting element by heat conduction respectively.
  • the first through hole and the second through hole are arranged on the bracket at intervals along the height direction of the bracket.
  • the heat conducting member and the electrode terminal are located on the same side of the battery cell, and the connecting member includes: a first connecting portion, the first connecting portion is at the same position as the electrode terminal. Corresponding, and electrically connected to the electrode terminals; the second connecting portion, the second connecting portion is arranged below the first connecting portion and is bonded or abutted with the heat conducting member.
  • the electric core has an explosion-proof valve, and an avoidance hole corresponding to the explosion-proof valve is also provided on the bracket, and the escape hole, the first through hole and the second through-hole The holes are arranged sequentially along the height direction of the bracket.
  • the connecting piece is an integrally formed sheet.
  • the casing is a metal casing.
  • a battery pack including: a liquid cooling plate; side of the board.
  • a vehicle including the battery pack is provided.
  • the heat on the connecting piece can be transferred to the shell of the electric core through the heat conducting piece, and then transferred to the outside by the shell of the electric core , so as to effectively dissipate heat from the connecting piece, prevent heat from accumulating on the connecting piece, and ensure the safety and capacity of the battery cell.
  • FIG. 1 is a partial structural schematic diagram of a battery pack according to an embodiment of the present disclosure
  • FIG. 2 is an exploded view of a partial structure of a battery pack according to an embodiment of the present disclosure
  • Fig. 3 is an enlarged view of area A in Fig. 2;
  • FIG. 4 is a schematic diagram of a vehicle of an embodiment of the present disclosure.
  • Bracket 20 first through hole 21; second through hole 22; escape hole 23;
  • Connecting piece 40 first connecting part 41; second connecting part 42;
  • the battery assembly 100 according to the embodiment of the present disclosure will be described in detail below with reference to the accompanying drawings.
  • a battery assembly 100 includes a plurality of battery cells 110 , a connecting member 40 and a heat conducting member 30 .
  • the electric cores 110 are electrically connected through the connecting piece 40, the electric core 110 has a casing 10, and a heat conducting element 30 is provided between the connecting piece 40 and the casing 10 of the electric core 110, and the heat conducting element 30 and the connecting piece 40 and the electric The shell 10 of the core 110 is thermally connected.
  • the heat conduction connection can be understood as that one of the connecting piece 40 and the housing 10 is in contact with the heat conducting piece 30, and the other is bonded to the heat conducting piece 30; abutting or bonding; or, the heat conducting element 30 is heat conducting glue, and the connecting element 40 is bonded to the housing 10 through heat conducting glue.
  • a battery assembly 100 is mainly composed of a battery cell 110 , a heat conduction member 30 and a connector 40 , and the heat conduction member 30 is disposed between the casing 10 of the battery cell 110 and the connector 40 .
  • each battery cell 110 has a casing 10, and the casing 10 includes a shell 12 with an opening and a cover plate 11 for closing the opening, and the connecting member 40 and the heat conduction member 30 are located on the side where the cover plate 11 of the battery cell 110 is located. .
  • the heat conducting element 30 is located between the connecting element 40 and the electric core 110, and the connecting element 40 can be electrically connected to the electric core 110, and can also be connected to the heat conducting element 30 through heat conduction.
  • the connecting element 40 When heat is generated on the connecting element 40, the connecting element The heat on the 40 can be transferred to the casing 10 of the battery cell 110 through the heat conducting member 30, and then transferred to the outside by the casing 10 of the battery cell 110, and then can be dissipated by air or by a refrigeration system (such as a liquid cold plate 210). Not limited.
  • the cover plate 11 of the battery cell 110 and the casing 12 of the battery cell 110 can be made of metal parts, such as metal aluminum.
  • the thermal conductivity of metal aluminum is 237W/m. k, has the advantage of high thermal conductivity.
  • the cover plate 11 of the cell 110 and the casing 12 of the cell 110 have larger areas, the heat dissipation area can be increased.
  • using the heat conduction member 30 to transfer heat to the cover plate 11 of the battery cell 110 and the casing 12 of the battery cell 110 can not only assist the connector 40 to dissipate heat, but also prevent problems such as circuit failure caused by heat accumulation on the connector 40 , and can also dissipate heat in time to prevent heat from accumulating inside the battery cell 110 .
  • the heat on the connector 40 of the embodiment of the present disclosure can be transferred to the casing 10 of the battery cell 110 through the heat conduction member 30, and then transferred to the outside by the casing 10 of the battery cell 110, so that the connector 40 can be heated.
  • the 40 effectively dissipates heat, prevents heat accumulation and excessive temperature rise of the connector 40 , and ensures user experience and driving safety.
  • the heat conduction path according to the embodiments of the present disclosure will be described in detail below in combination with specific situations:
  • the heat conduction route is: connecting part 40 - heat conducting part 30 - shell 10 of battery cell 110 .
  • the heat on the connection part 40 can be transferred to the casing 10 of the cell 110 via the heat conducting part 30 , and the heat can be directly diffused from the casing 10 of the cell 110 to the outside.
  • a liquid cooling plate 210 may be disposed under the battery cell 110 .
  • the heat transfer route is: connecting part 40 - heat conducting part 30 - shell 10 of battery cell 110 - liquid cold plate 210 .
  • the heat on the connector 40 can be transferred to the shell 10 of the cell 110 via the heat conducting member 30 , and the heat on the shell 10 is finally transferred to the liquid cooling plate 210 .
  • the large contact area can greatly improve the heat dissipation efficiency.
  • the heat conduction member 30 between the casing 10 of the battery cell 110 and the connection member 40, the heat on the connection member 40 can be transferred to the battery cell 110 through the heat conduction member 30.
  • the casing 10 is transmitted to the outside by the casing 10 of the battery cell 110 , so as to effectively dissipate heat from the connector 40 , prevent heat from accumulating on the connector 40 , and ensure the use safety and capacity of the battery cell 110 .
  • the heat conduction element 30 has opposite first sides and second sides, the first side of the heat conduction element 30 is bonded or abutted against the casing 10 of the electric core 110 , and the connecting element 40 is disposed on the heat conduction element 30 The second side of the heat-conducting element 30 is bonded or abutted with the connecting element 40 .
  • the heat conduction element 30 may have a first side and a second side. After installation, the first side of the heat conduction element 30 may be in contact with or bonded to the cover plate 11 of the electric core 110, and the second side of the heat conduction element 30 may be in contact with the The connector 40 is in contact or bonded.
  • the connecting piece 40 and the electric core 110 are arranged on opposite sides of the heat conducting element 30 , the connecting piece 40 can be electrically connected to the electric core 110 by welding, and can also be thermally connected to the heat conducting element 30 .
  • the heat on the connector 40 can be transferred to the heat conduction member 30 , and then the heat transfer member 30 transfers the heat to the casing 10 of the battery cell 110 , which can effectively prevent the heat from accumulating on the connector 40 .
  • one of the connecting member 40 and the housing 10 abuts against the heat conducting member 30 , and the other is bonded to the heat conducting member 30 .
  • the connector 40 is bonded to the heat conduction member 30 , the shell 10 of the cell 110 is in contact with the heat conduction member 30 , or the connector 40 is in contact with the heat conduction member 30 , and the shell 10 of the cell 110 is bonded to the heat conduction member 30 . It is not only simple to set up, easy to disassemble and install, but also can ensure that the heat conduction element 30 is closely connected with the battery cell 110 and the connection element 40 , further ensuring heat conduction from the heat conduction element 30 to the connection element 40 .
  • the battery cell 110 has an electrode terminal 1101
  • the battery assembly further includes a bracket 20, the bracket 20 is arranged at the same end of the plurality of battery cells 110, and the connector 40 is arranged on the side of the bracket 20 away from the battery cell 110
  • the bracket 20 is provided with a first through hole 21 corresponding to the electrode terminal 1101 , and the electrode terminal 1101 passes through the corresponding first through hole 21 and is electrically connected to the connector 40 .
  • the bracket 20 is further provided with a second through hole 22 corresponding to the heat conduction element 30 , the heat conduction element 30 passes through the corresponding second through hole 22 and is thermally connected to the housing 10 and the connection element 40 respectively.
  • the side of the battery cell 110 where the cover plate 11 is located has an electrode terminal 1101
  • the connector 40 can be electrically connected to the electrode terminal 1101
  • the connector 40 can be connected to the electrode terminal 1101 by welding.
  • the heat conduction member 30 can be located on the side of the electrode terminal 1101 on the battery cell 110 , which can reduce the length of the heat conduction path and improve the heat conduction efficiency.
  • the bracket 20 is disposed on the electric core 110 , and the bracket 20 can position the installation positions of the connecting member 40 and the heat conducting member 30 .
  • the bracket 20 can be arranged on the cover plate 11 of the battery cell 110.
  • the bracket 20 may be provided with a first through hole 21 , and the position of the first through hole 21 corresponds to the position of the electrode terminal 1101 .
  • By passing the electrode terminals 1101 through the corresponding first through holes 21 and connecting with the connector 40 not only the positioning of the connector 40 is facilitated, but also the electrical connection between the connector 40 and the battery cell 110 is facilitated.
  • the bracket 20 is further provided with a second through hole 22 , and the setting position of the second through hole 22 corresponds to the installation position of the heat conducting element 30 .
  • the connecting element 40 can be located above or below the heat conducting element 30, etc., here Not limited.
  • the heat conduction element 30 can be installed at the position corresponding to the second through hole 22, not only the installation position of the heat conduction element 30 can be positioned, but also can be further determined.
  • the installation range of the connector 40 and the placement of dimension deviation further increase the assembly speed of the battery assembly 100 .
  • the second through hole 22 communicates with or is spaced apart from the first through hole 21 , which is not limited herein.
  • the second through hole 22 and the first through hole 21 are arranged in a connected structure, it is beneficial to the processing and manufacturing of the bracket 20, and when the second through hole 22 and the first through hole 21 are arranged in a spaced apart distribution structure, there is It is beneficial to improve the positioning accuracy of the connecting member 40 and the heat conducting member 30 .
  • the connecting member 40 is engaged with the bracket 20 . That is to say, the connecting piece 40 and the bracket 20 are clamped and connected, and the bracket 20 plays a role of supporting and positioning the connecting piece 40 . During installation, the connecting member 40 can be clamped at the position corresponding to the first through hole 21 on the bracket 20 , which is easy to install.
  • the bracket 20 is a plastic part
  • the heat-conducting part 30 is a heat-conducting silicone sheet.
  • the bracket 20 is a plastic part, which has the advantage of light weight, not only can reduce the weight of the entire battery assembly 100 , but also can support and position the connecting member 40 .
  • the heat conduction element 30 adopts a sheet structure, which is beneficial to increase the contact area between the heat conduction element 30 and the casing 10 of the battery cell 110 and between the heat conduction element 30 and the connecting element 30 , and improves the efficiency and effect of heat conduction.
  • the heat conduction element 30 adopts a heat conduction silica gel sheet, and the heat conduction coefficient of the heat conduction silica gel sheet is 2-5W/m. k, the thermal conductivity of air is 0.03W/m. k.
  • the thermal conductivity of the thermally conductive silicone sheet is much greater than that of air. That is to say, the heat on the connecting piece 40 can be quickly conducted to the heat-conducting silicone sheet, and the heat-conducting silicon sheet can transfer the heat to the casing 10 of the battery cell 110 .
  • a heat-conducting silica gel sheet between the connecting piece 40 and the shell 10 of the battery cell 110, it can ensure that the heat is quickly transferred to the shell 10 of the battery cell 110, and then transferred to the outside by the shell 10 of the battery cell 110, so that the connecting piece 40 can be controlled. Effective heat dissipation prevents heat from accumulating on the connector 40 and ensures the use safety and capacity of the battery cell 110 .
  • the first through hole 21 and the second through hole 22 are arranged on the bracket 20 at intervals along the height direction of the bracket 20 .
  • the second through hole 22 and the first through hole 21 as a spaced structure, it is beneficial to improve the positioning accuracy of the connecting member 40 and the heat conducting member 30, and facilitate the positioning of the connecting member 40 and the heat conducting member 30.
  • the installation is beneficial to improve the overall installation speed of the battery pack.
  • the height direction of the bracket 20 refers to the direction indicated by the z direction in the figure.
  • the heat conducting member 30 and the electrode terminal 1101 are located on the same side of the cell 110 , and the connecting member 40 includes a first connecting portion 41 and a second connecting portion 42 .
  • the first connection portion 41 corresponds to the position of the electrode terminal 1101 and is electrically connected to the electrode terminal 1101 .
  • the second connecting portion 42 is disposed below the first connecting portion 41 and contacts or adheres to the heat conducting element 30 .
  • the connecting member 40 is mainly composed of a first connecting portion 41 and a second connecting portion 42 , and the first connecting portion 41 and the second connecting portion 42 are connected.
  • the first connecting portion 41 is disposed at a position corresponding to the electrode terminal 1101 and is electrically connected to the electrode terminal 1101 .
  • the second connection portion 42 is disposed on a side of the heat conduction member 30 facing away from the electric core 110 , and one side of the second connection portion 42 may be in contact with or bonded to the heat conduction member 30 .
  • connection part 41 and the second connection part 42 By providing the first connection part 41 and the second connection part 42, and the first connection part 41 can be electrically connected to the electrode terminal 1101, one side of the second connection part 42 can be abutted or bonded to the heat conducting member 30, which not only realizes The electrical connection function of the connecting piece 40 can also conduct the heat on the connecting piece 40 in time.
  • the cell 110 has an explosion-proof valve 1102, and the bracket 20 is also provided with an avoidance hole 23 corresponding to the explosion-proof valve 1102.
  • the escape hole 23, the first through hole 21 and the second through hole 22 are along the The height directions of 20 are arranged sequentially.
  • the bracket 20 is provided with an escape hole 23 , the escape hole 23 penetrates along the thickness direction of the bracket 20 , and the escape hole 23 is connected with the first through hole 21 and the second through hole 22 along the height of the bracket 20 .
  • the avoidance hole 23, the first through hole 21 and the second through hole 22 are arranged in the order of the avoidance hole 23, the first through hole 21, and the second through hole 22 on the bracket 20, and the electrode terminal 1101 is penetrated in the first through hole 21 It is also electrically connected to the first connecting portion 41 , and the heat-conducting member 30 passes through the second through hole 22 and abuts or adheres to the second connecting portion 42 .
  • first connecting portion 41 can be electrically connected to the electrode terminal 1101, and one side of the second connecting portion 42 can be in contact with the heat conducting member 30. Or at the same time of bonding, it can also facilitate the assembly between the various structures of the battery assembly 100 .
  • the connecting member 40 is an integrally formed sheet.
  • the connecting piece 40 is not only convenient to manufacture and install the connecting piece 40 , but also facilitates contact or bonding between the connecting piece 40 and the heat conducting piece 30 , which is beneficial to heat conduction.
  • a heat conducting element 30 is provided between each battery cell 110 and the corresponding connecting element 40 .
  • the battery assembly 100 generally includes a plurality of battery cells 110 , and the battery cells 110 are electrically connected through corresponding connectors 40 , so that the connectors 40 can conduct heat transfer through corresponding heat conducting members 30 , which is beneficial to improve transfer efficiency.
  • the casing 10 is a metal casing. That is to say, the housing 10 can be made of metal materials, such as metal aluminum, copper and so on. Compared with other non-metallic materials, metal has high thermal conductivity, which is beneficial to the heat dissipation of the connecting member 40 .
  • the installation process among the battery cell 110 , the bracket 20 , the connecting member 40 and the heat conducting member 30 may be: after the battery cell 110 is assembled, the bracket 20 may be installed on the cover plate 11 of the battery cell 110 . Then, the side of the heat conduction element 30 close to the electric core 110 is coated with adhesive, and the heat conduction element 30 is installed in a position corresponding to the second through hole 22 . Finally, the installation position of the connector 40 is positioned through the first through hole 21 and the heat conducting member 30, the connector 40 is installed on the bracket 20, and the connector 40 is electrically connected to the electrode terminal 1101 by welding, while ensuring The connecting part 40 is in close contact with the heat conducting part 30 .
  • the heat on the connector 40 can be transferred to the casing 10 of the battery cell 110 through the heat conducting member 30, which can effectively dissipate heat from the connector 40 and prevent heat from accumulating on the connector. 40 on.
  • the battery assembly 100 of the present disclosure has the advantages of good heat dissipation effect, heat accumulation prevention and safe use.
  • a battery pack 200 is also provided, including a liquid cooling plate 210 and the battery assembly 100 of any one of the above-mentioned embodiments.
  • the battery assembly 100 is attached to one side of the liquid cooling plate 210 . It can be understood that the battery assembly 100 may be in direct contact with the liquid cooling plate 210 , or a thermal conductive glue is provided between the battery assembly 100 and the liquid cooling plate 210 .
  • the heat on the connector 40 can be transferred to the shell 10 of the cell 110 via the heat conducting member 30, and then transferred to the liquid cooling plate 210 through the shell 10 of the cell 110, thereby further improving the heat dissipation effect of the connector and effectively
  • the use safety of the battery pack 200 is guaranteed.
  • a vehicle 300 is provided, and the vehicle 300 includes the battery pack 200 .

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
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  • Connection Of Batteries Or Terminals (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
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Abstract

一种电池组件、电池包和车辆，电池组件包括：多个电芯；连接件，电芯之间通过连接件电连接；导热件，电芯具有外壳，连接件与外壳之间设有导热件，导热件与连接件及外壳导热连接。

Description

电池组件、电池包和车辆
本公开要求于2021年07月30日提交中国专利局，申请号为202121778347.0，申请名称为“电池组件及电池包”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及一种电池组件、电池包和车辆。
背景技术
相关技术中，市场上的电池组件都是由若干电芯依次排布好后，电芯与电芯之间通过连接件实现电连接。
然而，在电池包快充充电时，连接件可能会出现温升过高和热量堆积的情况，这样连接件上的热量会经由电芯的极柱传至电芯内部的极芯，进而导致电芯内部温度过高。在电芯内部温度过高后，会引起短期电池控制器过温报警，整车出现限功率，影响驾驶体验感。长期会造成电芯容量衰减加快，影响续航里程，严重者将会影响电池包的使用安全及整车的安全性。
发明内容
本公开的一个目的是提供一种电池组件的新技术方案。
本公开的又一个目的是提供一种电池包的新技术方案，该电池包包括该电池组件。
根据本公开的第一方面，提供了一种电池组件，包括：多个电芯；连接件，所述电芯之间通过连接件电连接；导热件，所述电芯具有外壳，所述连接件与所述外壳之间设有所述导热件，所述导热件与所述连接件及所述外壳导热连接。
根据本公开的实施例，所述导热件具有相对的第一侧和第二侧，所述导热件的第一侧与所述外壳抵接或粘接，所述连接件设于所述导热件的第二侧，所述连接件与所述导热件的第二侧抵接或粘接。
根据本公开的实施例，所述连接件和所述外壳中的一者与所述导热件抵接，另一者与所述导热件粘接。
根据本公开的实施例，所述电芯具有电极端子，所述电池组件还包括：支架，所述支架设于多个所述电芯的同一端，所述连接件设于所述支架背离所述电芯的一侧，所述支架上设有与所述电极端子相对应的第一通孔，所述电极端子穿设于对应的第一通孔并与所述连接件电连接；所述支架上还设有与所述导热件相对应的第二通孔，所述导热件穿设于对应的第二通孔并分别与所述外壳和所述连接件导热连接。
根据本公开的实施例，所述第一通孔和所述第二通孔沿所述支架的高度方向间隔设于所述支架上。
根据本公开的实施例，所述导热件和所述电极端子位于所述电芯的同一侧，所述连接件包括：第一连接部，所述第一连接部与所述电极端子的位置相对应，且与所述电极端子电连接；第二连接部，所述第二连接部设于第一连接部的下方并与所述导热件粘接或抵接。
根据本公开的实施例，所述电芯具有防爆阀，所述支架上还设有与所述防爆阀相对应的避让孔，所述避让孔、所述第一通孔和所述第二通孔沿所述支架的高度方向依次排布。
根据本公开的实施例，所述连接件为一体成型的片体。
根据本公开的实施例，所述外壳为金属壳。
根据本公开的第二方面，提供了一种电池包，包括：液冷板；电池组件，所述电池组件为上述任一所述的电池组件，所述电芯组件贴设于所述液冷板的一侧。
根据本公开的第三方面，提供了一种车辆，所述车辆包括所述的电池包。
根据本公开公开的一个实施例，通过在电芯的外壳和连接件之间设置导热件，这样连接件上的热量可以经由导热件传递至电芯的外壳，并由电 芯的外壳传递至外部，从而能够对连接片进行有效地散热，防止热量集聚在连接片上，保证电芯的使用安全和容量。
通过以下参照附图对本公开的示例性实施例的详细描述，本公开的其它特征及其优点将会变得清楚。
附图说明
被结合在说明书中并构成说明书的一部分的附图示出了本公开的实施例，并且连同其说明一起用于解释本公开的原理。
图1是本公开的实施例的电池包的部分结构示意图；
图2是本公开的实施例的电池包的部分结构爆炸图；
图3是图2中A区域的放大图；
图4是本公开的实施例的车辆的示意图。
附图标记
电池组件100；
电芯110；电极端子1101；防爆阀1102；
外壳10；盖板11；壳体12；
支架20；第一通孔21；第二通孔22；避让孔23；
导热件30；
连接件40；第一连接部41；第二连接部42；
电池包200；液冷板210；
车辆300。
具体实施方式
现在将参照附图来详细描述本公开的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本公开的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本公开及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
下面结合附图对根据本公开实施例的电池组件100进行详细说明。
如图1至图3所示，根据本公开实施例的电池组件100包括多个电芯110、连接件40和导热件30。
具体而言，电芯110之间通过连接件40电连接，电芯110具有外壳10，连接件40与电芯110的外壳10之间设有导热件30，导热件30与连接件40及电芯110的外壳10导热连接。
需要说明的是，导热连接可以理解为连接件40和外壳10中的一者与导热件30抵接，另一者与导热件30粘接；或者，连接件40和外壳10均与导热件30抵接或粘接；或者，导热件30为导热胶，连接件40通过导热胶与外壳10粘接。
换言之，如图1所示，根据本公开实施例的电池组件100，主要由电芯110、导热件30和连接件40组成，导热件30设于电芯110的外壳10和连接件40之间。电芯110的数量为多个，多个电芯110依次排列。其中，每个电芯110都具有外壳10，外壳10包括具有开口的壳体12和用于封闭开口的盖板11，连接件40和导热件30位于电芯110的盖板11所在的一侧。
也就是说，导热件30位于连接件40和电芯110之间，连接件40既能够与电芯110电连接，也能够与导热件30导热连接，当连接件40上产生热量后，连接件40上的热量可以经由导热件30传递至电芯110的外壳10，并由电芯110的外壳10传递至外部，随后可以利用空气散热或者利用制冷系统(例如液冷板210)散热，在此不作限定。
需要说明的是，当利用导热件30将热量传递给至电芯110的盖板11和电芯110的壳体12时，电芯110的盖板11和电芯110的壳体12可以为金属件，如金属铝。金属铝的导热系数为237W/m﹒k，具有热传导系数高的优点。又由于电芯110的盖板11和电芯110的壳体12的面积较大，能够增大散热面积。因此，采用导热件30将热量传递给至电芯110的盖板11和电芯110的壳体12的方式，不仅可以协助连接件40散热，防止出现热量集聚在连接件40引起电路故障等问题，而且还可以及时散热，防止热量聚集到电芯110的内部。
在对电池进行快充时，本公开实施例的连接件40上的热量可以经由导热件30传递至电芯110的外壳10，并由电芯110的外壳10传递至外部，从而能够对连接件40进行有效地散热，防止连接件40出现热量集聚和温升过高的情况，保证了用户的体验感和驾驶安全。下面结合具体情况对根据本公开实施例的热量传导途径进行详细说明：
方式一
热量传导路线为：连接件40-导热件30-电芯110的外壳10。
也就是说，连接件40上的热量可以是经由导热件30传递至电芯110的外壳10，热量可以直接从电芯110的外壳10向外界扩散。
方式二
可以在电芯110的下方设置液冷板210。
热量传递路线为：连接件40-导热件30-电芯110的外壳10-液冷板210。
也就是说，连接件40上的热量可以经由导热件30传递至电芯110的外壳10，外壳10上的热量最终传递至液冷板210，由于电芯110和液冷板210之间可以具有较大的接触面积，因此能够大大提高散热效率。
由此，根据本公开实施例的电池组件100，通过在电芯110的外壳10和连接件40之间设置导热件30，这样连接件40上的热量可以经由导热件30传递至电芯110的外壳10，并由电芯110的外壳10传递至外部，从而能够对连接件40进行有效地散热，防止热量集聚在连接件40上，保证电芯110的使用安全和容量。
根据本公开的一个实施例，导热件30具有相对的第一侧和第二侧，导热件30的第一侧与电芯110的外壳10粘接或抵接，连接件40设于导热件30的第二侧，连接件40与导热件30的第二侧粘接或抵接。
具体地，导热件30可以具有第一侧和第二侧，在安装后，导热件30的第一侧可以与电芯110的盖板11接触或粘接，导热件30的第二侧可以与连接件40接触或粘接。通过将连接件40与电芯110设置在导热件30相对的两侧，连接件40既能够通过焊接与电芯110电连接，也能够与导热件30导热连接。当连接件40上产生热量后，连接件40上的热量可以传递给导热件30，随后导热件30再将热量传递至电芯110的外壳10，能够有效地防止热量聚集到连接件40上。
在本公开的一些具体实施方式中，连接件40和外壳10中的一者与导热件30抵接，另一者与导热件30粘接。
也就是说，连接件40与导热件30粘接，电芯110的外壳10与导热件30抵接，或者连接件40与导热件30抵接，电芯110的外壳10与导热件30粘接。其不仅设置简单，便于拆卸与安装，而且能够保证导热件30分别与电芯110和连接件40紧密相接，进一步保证了导热件30对连接件40的热量传导。
根据本公开的一个实施例，电芯110具有电极端子1101，电池组件还包括支架20，支架20设于多个电芯110的同一端，连接件40设于支架20背离电芯110的一侧，支架20上设有与电极端子1101相对应的第一通孔21，电极端子1101穿设于对应的第一通孔21并与连接件40电连接。支架20上还设有与导热件30相对应的第二通孔22，导热件30穿设于对应的第二通孔22并分别与外壳10和连接件40导热连接。
具体，如图3所示，电芯110的盖板11所在的一侧具有电极端子1101，连接件40能够与电极端子1101电连接，连接件40可以与电极端子1101通过焊接的方式连接。导热件30可以位于电芯110上电极端子1101所在位置的一侧，能够缩小热传导的路径长度，提高热传导效率。
进一步地，如图1所示，支架20设置在电芯110上，支架20能够对连接件40、导热件30的安装位置进行定位。例如，支架20可以设置在电 芯110的盖板11上。如图3所示，支架20上可设有第一通孔21，第一通孔21的设置位置与电极端子1101的位置相对应。通过将电极端子1101穿设于对应的第一通孔21并与连接件40连接，不仅有利于对于连接件40的定位，还有利于连接件40与电芯110之间的电连接。由此，通过在支架20上设置第一通孔21，有利于将连接件40安装在与第一通孔21对应的位置上，其能够快速对连接件40的安装位置进行定位，提高电池组件100的组装速度。
如图3所示，支架20上还设有第二通孔22，第二通孔22的设置位置与导热件30的安装位置相对应。需要说明的是，在将导热件30安装在第二通孔22后，并将连接件40安装在第一通孔21时，连接件40可以位于导热件30的上方或下方等位置，在此不作限定。
也就是说，通过在支架20上设置第二通孔22，导热件30可以安装在与第二通孔22对应的位置上，不仅能够对导热件30的安装位置进行定位，而且能够进一步地确定连接件40的安装范围，放置尺寸偏差，进一步提高电池组件100的组装速度。
在本公开的一些具体实施方式中，第二通孔22和第一通孔21连通或者间隔开，在此不作限定。在将第二通孔22和第一通孔21设置为连通结构时，有利于支架20的加工制造，而在将第二通孔22和第一通孔21设置间隔开分布的结构时，有利于提高对于连接件40和导热件30的定位精确性。
在本公开的一些具体实施方式中，连接件40与支架20卡接。也就是说，连接件40与支架20之间卡接相连，支架20起到对连接件40支撑和定位的作用。在安装时，可以将连接件40卡接在支架20上第一通孔21对应的位置，易于安装。
根据本公开的一个实施例，支架20为塑料件，导热件30为导热硅胶片。
具体地，支架20为塑料件，具有质量轻的优点，不仅可以降低整个电池组件100的质量，还能够对连接件40支撑和定位的作用。
导热件30采用片状结构，有利于增大导热件30和电芯110的外壳10 以及导热件30和连接件30的接触面积，提高热传导效率和效果。
例如，导热件30采用导热硅胶片，导热硅胶片的导热系数为2～5W/m﹒k，空气的导热系数为0.03W/m﹒k，导热硅胶片的导热系数远大于空气的导热系数。也就是说，连接件40上的热量能够快速传导至导热硅胶片，导热硅胶片能够将热量传递至电芯110的外壳10。通过在连接件40和电芯110的外壳10之间设置导热硅胶片，能够保证热量快速传递至电芯110外壳10，并由电芯110的外壳10传递至外部，从而能够对连接件40进行有效地散热，防止热量集聚在连接件40上，保证电芯110的使用安全和容量。
在本公开的一些具体实施方式中，第一通孔21和第二通孔22沿支架20的高度方向间隔设于支架20上。
也就是说，通过将第二通孔22和第一通孔21设置为间隔开分布的结构，有利于提高对于连接件40和导热件30的定位精确性，便于对连接件40和导热件30进行安装，有利于提高电池组件的整体安装速度。其中，如图3所示，支架20的高度方向是指图中z向所表示的方向。
根据本公开的一个实施例，导热件30和电极端子1101位于电芯110的同一侧，连接件40包括第一连接部41和第二连接部42。第一连接部41与电极端子1101的位置相对应，且与电极端子1101电连接。第二连接部42设于第一连接部41的下方并与导热件30抵接或粘接。
也就是说，连接件40主要由第一连接部41和第二连接部42组成，第一连接部41和第二连接部42相连接。具体地，第一连接部41设置在与电极端子1101相对应的位置上，并且与电极端子1101电连接。第二连接部42设置在导热件30背向电芯110的一侧，第二连接部42的一侧可以与导热件30抵接或粘接。通过设置第一连接部41和第二连接部42，且第一连接部41能够与电极端子1101电连接，第二连接部42的一侧可以与导热件30抵接或粘接，不仅实现了连接件40的电连接作用，而且能够将连接件40上的热量及时传导出去。
根据本公开的一个实施例，电芯110具有防爆阀1102，支架20上还设有与防爆阀1102相对应的避让孔23，避让孔23、第一通孔21和第二通 孔22沿支架20的高度方向依次排布。
也就是说，如图3所示，支架20上设有避让孔23，避让孔23沿支架20的厚度方向贯通，避让孔23与第一通孔21和第二通孔22沿支架20的高度方向间隔设置。在支架20上避让孔23、第一通孔21和第二通孔22的设置顺序为避让孔23、第一通孔21、第二通孔22，电极端子1101穿设于第一通孔21并与第一连接部41电连接，导热件30穿设于第二通孔22并与第二连接部42抵接或粘接。由此，在安装时，互相不会造成干扰，具有布局合理的优点，在能够保证第一连接部41能够与电极端子1101电连接，第二连接部42的一侧可以与导热件30抵接或粘接的同时，还能够便于电池组件100各个结构之间的装配。
在本公开的一些具体实施方式中，连接件40为一体成型的片体。通过将连接件40设置为一体成型的片体，不仅便于对连接件40进行制造、安装，还有利于连接件40和导热件30之间的抵接或粘接，有利于热量传导。
根据本公开的一个实施例，每个电芯110与对应的连接件40之间均设有导热件30。
也就是说，导热件30的数量为多个，在每个电芯110与对应连接件40之间都设有一个导热件，即每个电芯110对应一个导热件30。电池组件100一般包括多个电芯110，电芯110之间通过对应的连接件40电连接，这样连接件40可通过对应的导热件30进行热量传递，有利于提高传递效率。
根据本公开的一个实施例，外壳10为金属壳。也就是说，外壳10可以由金属材料制成，例如金属铝、铜等。相比较于其它非金属材料金属的导热性高，有利于对连接件40的散热。
其中，电芯110、支架20、连接件40和导热件30之间的安装过程可以是：将电芯110组装好后，可以将支架20安装在电芯110的盖板11上。然后，将导热件30靠近电芯110的一侧涂上背胶，将导热件30安装在与第二通孔22的对应的位置。最后，通过第一通孔21和导热件30对连接件40的安装位置进行定位，将连接件40安装在支架20上，并通过焊接的方 式使连接件40与电极端子1101电连接，同时保证连接件40与导热件30紧密接触。
由此，根据本公开实施例的电池组件100，能够通过导热件30将连接件40上的热量传递至电芯110的外壳10，可以有效地对连接件40进行散热，防止热量集聚在连接件40上。本公开的电池组件100具有散热效果好，防止热量堆积和使用安全等优点。
根据本公开实施例还提供了一种电池包200，包括液冷板210和上述任一实施例的电池组件100。电池组件100贴设于液冷板210的一侧。可以理解的，电池组件100可以与液冷板210直接接触，或者电池组件100与液冷板210之间设有导热胶。
如此设置，连接件40上的热量可以经由导热件30传递至电芯110的外壳10，然后经由电芯110的外壳10传递至液冷板210，从而可进一步提高连接件的散热效果，有效地保证电池包200的使用安全。
参见图4，根据本公开实施例还提供了一种车辆300，所述车辆300包括所述的电池包200。
虽然已经通过例子对本公开的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上例子仅是为了进行说明，而不是为了限制本公开的范围。本领域的技术人员应该理解，可在不脱离本公开的范围和精神的情况下，对以上实施例进行修改。本公开的范围由所附权利要求来限定。

Claims (11)

  1. 一种电池组件，包括：
    多个电芯；
    连接件，所述电芯之间通过连接件电连接；
    导热件，所述电芯具有外壳，所述连接件与所述外壳之间设有所述导热件，所述导热件与所述连接件及所述外壳导热连接。
  2. 根据权利要求1所述的电池组件，其中，所述导热件具有相对的第一侧和第二侧，所述导热件的第一侧与所述外壳抵接或粘接，所述连接件设于所述导热件的第二侧，所述连接件与所述导热件的第二侧抵接或粘接。
  3. 根据权利要求1所述的电池组件，其中，所述连接件和所述外壳中的一者与所述导热件抵接，另一者与所述导热件粘接。
  4. 根据权利要求1-3任一项所述的电池组件，其中，所述电芯具有电极端子，所述电池组件还包括：
    支架，所述支架设于多个所述电芯的同一端，所述连接件设于所述支架背离所述电芯的一侧，所述支架上设有与所述电极端子相对应的第一通孔，所述电极端子穿设于对应的第一通孔并与所述连接件电连接；
    所述支架上还设有与所述导热件相对应的第二通孔，所述导热件穿设于对应的第二通孔并分别与所述外壳和所述连接件导热连接。
  5. 根据权利要求1-4任一项所述的电池组件，其中，所述第一通孔和所述第二通孔沿所述支架的高度方向间隔设于所述支架上。
  6. 根据权利要求1-5任一项所述的电池组件，其中，所述导热件和所述电极端子位于所述电芯的同一侧，所述连接件包括：
    第一连接部，所述第一连接部与所述电极端子的位置相对应，且与所述电极端子电连接；
    第二连接部，所述第二连接部设于第一连接部的下方并与所述导热件粘接或抵接。
  7. 根据权利要求1-6任一项所述的电池组件，其中，所述电芯具有防爆阀，所述支架上还设有与所述防爆阀相对应的避让孔，所述避让孔、所 述第一通孔和所述第二通孔沿所述支架的高度方向依次排布。
  8. 根据权利要求1-7任一项所述的电池组件，其中，所述连接件为一体成型的片体。
  9. 根据权利要求1-8任一项所述的电池组件，其中，所述外壳为金属壳。
  10. 一种电池包，其中，包括：
    液冷板；
    电池组件，所述电池组件为根据权利要求1-9任一项所述的电池组件，所述电芯组件贴设于所述液冷板的一侧。
  11. 一种车辆，其中，包括权利要求10所述的电池包。
PCT/CN2022/108928 2021-07-30 2022-07-29 电池组件、电池包和车辆 Ceased WO2023006064A1 (zh)

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