WO2023165579A1 - Cell assembly and battery device - Google Patents

Cell assembly and battery device Download PDF

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Publication number
WO2023165579A1
WO2023165579A1 PCT/CN2023/079423 CN2023079423W WO2023165579A1 WO 2023165579 A1 WO2023165579 A1 WO 2023165579A1 CN 2023079423 W CN2023079423 W CN 2023079423W WO 2023165579 A1 WO2023165579 A1 WO 2023165579A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
connecting plate
heat dissipation
cell assembly
assembly according
Prior art date
Application number
PCT/CN2023/079423
Other languages
French (fr)
Chinese (zh)
Inventor
潘福中
郑松太
李慧明
王旭东
牛亚琪
Original Assignee
浙江极氪智能科技有限公司
威睿电动汽车技术(宁波)有限公司
浙江吉利控股集团有限公司
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
Priority claimed from CN202210208264.0A external-priority patent/CN114497825B/en
Application filed by 浙江极氪智能科技有限公司, 威睿电动汽车技术(宁波)有限公司, 浙江吉利控股集团有限公司 filed Critical 浙江极氪智能科技有限公司
Publication of WO2023165579A1 publication Critical patent/WO2023165579A1/en

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • H01M10/6554Rods or plates
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/653Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • H01M10/6551Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • H01M10/6553Terminals or leads
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • H01M10/6556Solid parts with flow channel passages or pipes for heat exchange
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/656Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567Liquids
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258Modular batteries; Casings provided with means for assembling
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/502Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Definitions

  • the present application relates to the technical field of battery devices, in particular to a battery cell assembly and a battery device.
  • a battery pack such as a battery pack configured on a new energy vehicle, is usually composed of several battery modules, and the battery module is composed of several battery cells.
  • the connecting piece is fixed on the pole of the battery cell and used for To form a series or parallel relationship between different battery cells.
  • the main purpose of the present application is to provide a battery cell assembly, which aims to improve the heat dissipation efficiency of the connecting piece through the heat dissipation structure, so as to avoid the problem that its temperature rise is too high and affect the performance of the battery cell.
  • the cell assembly proposed by this application includes:
  • the electric core has poles, and the electric core is provided with at least two poles;
  • the heat dissipation structure is connected to the connector.
  • the heat dissipation structure includes a heat dissipation element
  • the heat dissipation element includes a body section and an extension section, and there are a plurality of electric cores, and the bottom surfaces of the plurality of electric cores are arranged on the body section, so The body section is used for heat exchange with the electric core; the extension section exceeds the side of the electric core and is used for heat exchange with the connecting piece.
  • the heat dissipation structure further includes a heat conduction structure, and the heat conduction structure is sandwiched between Between the connecting piece and the heat sink.
  • the material of the heat conduction structure is configured as an insulating material.
  • the heat conduction structure is configured as a heat conduction element made of elastic material; or, the heat conduction structure is configured as heat conduction glue or heat conduction silicone grease filled between the connection element and the heat dissipation element.
  • the connector includes a connecting plate and an abutting flange, the connecting plate is connected to the poles of the two battery cells, and the abutting flange is formed by the connecting plate close to the The side edge of the heat sink is folded and leans against the heat conducting structure.
  • At least two of the battery cells are distributed along the first direction, and a pre-stretching rib is provided in the middle of the connecting plate, and the extending direction of the pre-stretching rib intersects the first direction and is located at Between the pole posts of the two electric cores, the cross-sectional shape of the pre-extended ribs is curved or bent.
  • the connecting plate and the abutting flange are integrally stamped and formed.
  • the abutment flanging is provided with a relief opening corresponding to the pre-extension rib, and the connecting plate is provided with an escape gap communicating with the relief opening, and the pre-extension rib is connected to the edge of the avoidance gap.
  • connecting pieces there are multiple connecting pieces, and the connecting pieces are distributed at intervals along the first direction, and the heat conducting structure extends along the first direction and is connected to at least two connecting pieces.
  • connection plate covers the pole arrangement.
  • the connecting plate is welded and fixed to the pole.
  • the cooling element is provided with a refrigerant channel, and the refrigerant channel is used for circulation of the refrigerant.
  • the present application also proposes a battery device, including the aforementioned battery cell assembly.
  • the technical solution of the present application can dissipate the heat of the connecting piece in time through the heat dissipation structure, that is, improve the heat dissipation efficiency of the connecting piece, thereby avoiding the excessive temperature rise of the connecting piece, especially in the case of high current charging and discharging. It leads to the problem that the performance of the battery cell is degraded, and it is beneficial to improve the service life of the battery cell. It is easy to understand that if the connector only exchanges heat with the air, the heat dissipation efficiency will be too low and the temperature will rise rapidly. However, the heat dissipation efficiency of the connector connected to the heat dissipation structure can be improved by using a specially designed heat dissipation structure.
  • Fig. 1 is a schematic structural view of an embodiment of the cell assembly of the present application
  • Fig. 2 is a partial enlarged view of the cell assembly at A in Fig. 1;
  • FIG. 3 is a schematic structural view of another embodiment of the cell assembly of the present application.
  • FIG. 4 is a schematic structural view of another embodiment of the cell assembly of the present application.
  • FIG. 5 is a schematic structural diagram of another embodiment of the cell assembly of the present application.
  • a battery pack such as a battery pack configured on a new energy vehicle, is usually composed of several battery modules, and the battery module is composed of several battery cells.
  • the connecting piece is fixed on the pole of the battery cell and used for To form a series or parallel relationship between different battery cells.
  • the application proposes a cell assembly, referring to Figures 1 and 2, in an embodiment of the application, the cell assembly includes:
  • the electric core 10 has poles 11, and the electric core 10 is provided with at least two;
  • the connecting piece 20 is connected between the poles 11 of the two electric cores 10;
  • the heat dissipation structure 30 is connected to the connector 20 .
  • the technical solution of the present application can dissipate the heat of the connector 20 in a timely manner through the heat dissipation structure 30, that is, improve the heat dissipation efficiency of the connector, thereby avoiding the excessive temperature rise of the connector 20, especially in the case of high-current charging and discharging. If the value is too high, the performance of the single battery cell 10 will be reduced, and it is beneficial to improve the service life of the battery cell 10 . It is easy to understand that if the connector 20 only exchanges heat with the air, the heat dissipation efficiency will be too low and the temperature will rise rapidly. However, the heat dissipation of the connector 20 connected to the heat dissipation structure 30 can be improved by using the specially arranged heat dissipation structure 30. efficiency.
  • the heat dissipation structure 30 includes a heat dissipation element 31, the heat dissipation element 31 Including the body section 311 and the extension section 312, there are multiple battery cells 10, and the multiple battery cells are distributed along the first direction.
  • the battery cells have adjacent bottom surfaces and side surfaces, and the plane where the bottom surface is located is parallel to the first direction.
  • the plane where it is located is arranged in parallel with the first direction, and the bottom surfaces of the plurality of battery cells 10 are all set on the body section 311, and the body section 311 is used for heat exchange with the battery cells 10; the extension section 312 exceeds the side of the battery cell 10 and is used for Heat exchange with the connector 20 .
  • the bottom surface of the battery cell 10 does not specifically refer to the lower side in the vertical direction, but can be either the upper side or the lower side.
  • the heat sink 31 is located on the lower side of the battery cell 10 ; It can be understood that when the battery pack is working, the battery cell 10 is the main heat source, so heat dissipation measures need to be specially provided for the battery cell 10 .
  • the heat sink 31 is mainly used to dissipate heat from the battery cell 10, and then use the local structure (extension section 312) of the heat sink 31 to exchange heat with the connector 20, thereby improving the integration of the heat dissipation structure 30 , simplifying the structure of the heat dissipation structure 30 , and further avoiding a significant increase in the overall weight and volume of the battery pack on the premise of improving the heat dissipation efficiency of the connector 20 .
  • the battery pack arranged on the new energy vehicle is extremely sensitive to its own weight and volume, so the technical solution of this embodiment is simple in structure and will not significantly increase the volume and weight of the battery pack, and has a relatively large Market Advantage.
  • the heat exchange between the connecting piece 20 and the extension section 312 may be that the connecting piece 20 directly contacts the extension section 312 and conducts heat conduction, or the connecting piece 20 passes through other media, such as heat-conducting silicone grease or a heat-conducting piece, It is in indirect contact with the extension section 312 and conducts heat conduction.
  • the material defining the extension section 312 is configured as a thermally conductive insulating material, which can prevent the connection between the multiple connectors 20. An electrical connection is made between them through the extension segment 312 .
  • the heat dissipation structure 30 further includes a heat conduction structure 32 , and the heat conduction structure 32 is interposed between the connecting member 20 and the heat dissipation member 31 .
  • the heat on the connector 20 can be transferred to the heat sink 31 in time through the heat conduction structure 32 , and then the heat is dissipated by the heat sink 31 with a larger surface area, thereby further improving the heat dissipation efficiency of the connector 20 .
  • the material of the heat conduction structure 32 is configured as an insulating material.
  • the heat conduction structure 32 is configured as a heat conduction element made of elastic material, such as a heat conduction silicone element, or an insulating heat conduction foam pad, and the like. In this way, firstly, by limiting the material of the heat conduction structure 32 to an insulating material, it is possible to prevent electrical connection between the plurality of connectors 20 through the heat conduction structure 32 , thereby ensuring the normal operation of the battery pack.
  • the heat conduction structure 32 has elasticity, it is possible to preset the assembly between the connecting piece 20 and the heat conduction structure 32 The amount of interference is to digest the dimensional tolerance and assembly tolerance, so as to ensure that a plurality of different connectors 20 can actually abut on the heat conduction structure 32, that is, to avoid the situation that some connectors 20 are separated from the heat conduction structure 32, so as to ensure Effectiveness of the heat conduction path from the connection part 20 to the heat dissipation part 31 through the heat conduction structure 32 .
  • the present design is not limited thereto.
  • the heat conduction structure may also be configured as heat conduction glue or heat conduction silicone grease filled between the connector and the heat sink.
  • the connector 20 includes a connecting plate 21 and an abutting flange 22.
  • the connecting plate 21 is connected to the poles 11 of the two electric cores 10.
  • the abutting flange 22 is formed by the connecting plate.
  • the side edge of 21 close to the heat sink 31 is folded and leans against the heat conducting structure 32 .
  • the abutment flange 22 not only enhances the structural strength of the connector 20 itself, but also increases the contact area between the connector 20 and the heat conduction structure 32 , which is beneficial to improve the heat conduction effect.
  • the connecting member may also be configured as a connecting plate, and the side edge of the connecting plate directly abuts against the heat conducting structure, or the side edge of the connecting plate is inserted into the heat conducting structure.
  • Fig. 4 in another embodiment of the battery cell assembly of the present application, there are two heat dissipation structures 30, and the two heat dissipation structures are respectively located on the upper and lower sides of the battery cell 10, and are arranged oppositely, so that the heat dissipation structure can be further improved.
  • the heat dissipation efficiency of the battery cell 10 and the connector 20 It can be understood that two abutting flanges 22 are provided correspondingly, and are respectively connected to the upper and lower sides of the connecting plate 21 , that is, the cross-sectional shape of the connecting member 20 along the vertical direction is U-shaped.
  • At least two battery cells 10 are distributed along the first direction, and the middle part of the connecting plate 21 is provided with a pre-stretching rib 211, and the extension direction of the pre-stretching rib 211 is intersected with the first direction.
  • the cross-sectional shape of the pre-extended ribs 211 is curved or bent. In this way, when the cell 10 expands and the distance between the poles 11 on two adjacent cells 10 changes, the pre-extended ribs 211 can be elongated accordingly to adapt to the change in the distance, that is, the connector 20 It can still maintain an effective connection with the pole 11 and work normally.
  • the connecting plate 21 may not be provided with pre-stretching ribs 211 , that is, the connecting member 20 is configured as an L-shaped bracket with a simple structure.
  • the connecting plate 21 and the abutting flange 22 are integrally stamped and formed. In this way, the manufacturing cost of the connecting member 20 can be reduced, and the connection strength between the abutting flange 22 and the connecting plate 21 can be enhanced, so as to ensure that the abutting flange 22 can be more attached to the heat conducting structure 32 .
  • the connecting part may also be formed by casting or forging process, or formed by extrusion process, for example, the connecting part is formed by extruded graphene plate and the like.
  • the abutment flange 22 is provided with a relief opening 22a corresponding to the pre-extension rib 211, and the connecting plate 21 is provided with an escape gap 21a communicating with the escape opening 22a, and the pre-extension rib 211 is connected to the escape gap 21a. edge.
  • the connecting plate 21 is provided with an escape gap 21a communicating with the escape opening 22a
  • the pre-extension rib 211 is connected to the escape gap 21a. edge.
  • each connecting piece is correspondingly provided with an independent heat conducting structure, or that two ends abutting against the flange are respectively provided with an independent heat conducting structure.
  • the connecting plate 21 is arranged to cover the pole 11 .
  • the connecting plate 21 covers part of the pole arrangement.
  • the connecting plate 21 is welded and fixed on the pole 11 .
  • fixing by welding can improve the connection strength between the connection plate 21 and the pole 11, ensure the stability and reliability of the connection between the two, and the installation process is simple and easy to operate, which is conducive to improving the reliability of the battery pack.
  • Productivity can also be installed on the battery core through a screw locking or clamping structure, and abut against the pole.
  • the cooling element 31 is provided with a refrigerant channel, and the refrigerant channel is used for circulating the refrigerant.
  • the heat dissipation element 31 can rapidly exchange heat between the battery cell 10 and the connecting piece 20 through liquid cooling, thereby improving the overall heat dissipation efficiency of the battery cell 10 assembly.
  • the refrigerant is configured as a mixture of water and alcohol.
  • the heat sink 31 may not be provided with a refrigerant channel, but a paint with good heat radiation performance may be coated on the surface; the refrigerant may also be water, or a fluorinated liquid, and the like.
  • the present application also proposes a battery device, including the aforementioned cell assembly, and the specific details of the cell assembly.

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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)
  • Secondary Cells (AREA)

Abstract

Disclosed in the present application are a cell assembly and a battery device. The cell assembly comprises: cells, wherein each cell has an electrode post, and at least two cells are provided; a connecting member, which is connected between the electrode posts of the two cells; and a heat dissipation structure, which is connected to the connecting member.

Description

电芯组件和电池装置Cell Assemblies and Battery Units
相关申请related application
本申请要求于2022年3月3号申请的、申请号为202210208264.0的中国专利申请的优先权。This application claims the priority of the Chinese patent application with application number 202210208264.0 filed on March 3, 2022.
技术领域technical field
本申请涉及电池装置技术领域,特别涉及一种电芯组件和电池装置。The present application relates to the technical field of battery devices, in particular to a battery cell assembly and a battery device.
背景技术Background technique
电池包,例如新能源车辆上所配置的电池包,通常由若干电池模组构成,电池模组又由若干电芯单体构成,连接片固设于电芯单体的极柱上,并用于使不同电芯单体之间形成串联或并联关系。当电池包充放电的电流值较大时,连接片温升较高,并会将热量传递至电芯内部,从而影响到电芯的工作性能和寿命。A battery pack, such as a battery pack configured on a new energy vehicle, is usually composed of several battery modules, and the battery module is composed of several battery cells. The connecting piece is fixed on the pole of the battery cell and used for To form a series or parallel relationship between different battery cells. When the current value of charging and discharging of the battery pack is large, the temperature rise of the connecting piece is high, and the heat will be transferred to the inside of the battery cell, thereby affecting the working performance and life of the battery cell.
发明内容Contents of the invention
本申请的主要目的是提供一种电芯组件,旨在通过散热结构提升连接片的散热效率,从而避免其温升过高而影响电芯性能的问题。The main purpose of the present application is to provide a battery cell assembly, which aims to improve the heat dissipation efficiency of the connecting piece through the heat dissipation structure, so as to avoid the problem that its temperature rise is too high and affect the performance of the battery cell.
为实现上述目的,本申请提出的电芯组件包括:In order to achieve the above purpose, the cell assembly proposed by this application includes:
电芯,具有极柱,所述电芯设有至少两个;The electric core has poles, and the electric core is provided with at least two poles;
连接件,连接于两所述电芯的极柱之间;以及a connector, connected between the poles of the two electric cores; and
散热结构,连接于所述连接件。The heat dissipation structure is connected to the connector.
在一实施方式中,所述散热结构包括散热件,所述散热件包括本体段和延伸段,所述电芯设有多个,多个所述电芯的底面设于所述本体段,所述本体段用于与所述电芯进行热交换;所述延伸段超出所述电芯的侧面,并用于与所述连接件进行热交换。In one embodiment, the heat dissipation structure includes a heat dissipation element, the heat dissipation element includes a body section and an extension section, and there are a plurality of electric cores, and the bottom surfaces of the plurality of electric cores are arranged on the body section, so The body section is used for heat exchange with the electric core; the extension section exceeds the side of the electric core and is used for heat exchange with the connecting piece.
在一实施方式中,所述散热结构还包括导热结构,所述导热结构夹设于 所述连接件与所述散热件之间。In one embodiment, the heat dissipation structure further includes a heat conduction structure, and the heat conduction structure is sandwiched between Between the connecting piece and the heat sink.
在一实施方式中,所述导热结构的材质配置为绝缘材质。In one embodiment, the material of the heat conduction structure is configured as an insulating material.
在一实施方式中,所述导热结构配置为弹性材质的导热件;或者,所述导热结构配置为填充于所述连接件与所述散热件之间的导热胶或导热硅脂。In one embodiment, the heat conduction structure is configured as a heat conduction element made of elastic material; or, the heat conduction structure is configured as heat conduction glue or heat conduction silicone grease filled between the connection element and the heat dissipation element.
在一实施方式中,所述连接件包括连接板和抵接翻边,所述连接板连接于两所述电芯的极柱上,所述抵接翻边由所述连接板的靠近所述散热件的侧缘翻折形成,并抵靠于所述导热结构。In one embodiment, the connector includes a connecting plate and an abutting flange, the connecting plate is connected to the poles of the two battery cells, and the abutting flange is formed by the connecting plate close to the The side edge of the heat sink is folded and leans against the heat conducting structure.
在一实施方式中,至少两所述电芯沿第一方向分布,所述连接板的中部设有预延伸筋,所述预延伸筋的延伸方向与所述第一方向呈相交设置,并位于两所述电芯的极柱之间,所述预延伸筋的横截面形状呈弯曲或弯折设置。In one embodiment, at least two of the battery cells are distributed along the first direction, and a pre-stretching rib is provided in the middle of the connecting plate, and the extending direction of the pre-stretching rib intersects the first direction and is located at Between the pole posts of the two electric cores, the cross-sectional shape of the pre-extended ribs is curved or bent.
在一实施方式中,所述连接板与所述抵接翻边一体冲压成型设置。In one embodiment, the connecting plate and the abutting flange are integrally stamped and formed.
在一实施方式中,所述抵接翻边对应所述预延伸筋设有让位口,所述连接板设有与所述让位口相连通的避让缺口,所述预延伸筋连接于所述避让缺口的边缘。In one embodiment, the abutment flanging is provided with a relief opening corresponding to the pre-extension rib, and the connecting plate is provided with an escape gap communicating with the relief opening, and the pre-extension rib is connected to the edge of the avoidance gap.
在一实施方式中,所述连接件设有多个,多个所述连接件沿第一方向间隔分布,所述导热结构沿所述第一方向延伸,并与至少两所述连接件连接。In one embodiment, there are multiple connecting pieces, and the connecting pieces are distributed at intervals along the first direction, and the heat conducting structure extends along the first direction and is connected to at least two connecting pieces.
在一实施方式中,所述连接板遮盖所述极柱设置。In one embodiment, the connection plate covers the pole arrangement.
在一实施方式中,所述连接板焊接固设于所述极柱。In one embodiment, the connecting plate is welded and fixed to the pole.
在一实施方式中,所述散热件设有冷媒通道,所述冷媒通道用于供冷媒流通。In one embodiment, the cooling element is provided with a refrigerant channel, and the refrigerant channel is used for circulation of the refrigerant.
本申请还提出一种电池装置,包括前述的电芯组件。The present application also proposes a battery device, including the aforementioned battery cell assembly.
本申请技术方案,通过散热结构能够将连接件的热量及时散发,也即提升连接片的散热效率,从而避免连接件温升过高,特别是在大电流充放电工况下温升过高,导致电芯单体性能下降的问题,并有利于提升电芯的使用寿命。容易理解的,连接件若只是通过与空气进行热交换,则散热效率过低并会迅速温升,而利用专门设置的散热结构,能提高与散热结构相连接的连接件的散热效率。 The technical solution of the present application can dissipate the heat of the connecting piece in time through the heat dissipation structure, that is, improve the heat dissipation efficiency of the connecting piece, thereby avoiding the excessive temperature rise of the connecting piece, especially in the case of high current charging and discharging. It leads to the problem that the performance of the battery cell is degraded, and it is beneficial to improve the service life of the battery cell. It is easy to understand that if the connector only exchanges heat with the air, the heat dissipation efficiency will be too low and the temperature will rise rapidly. However, the heat dissipation efficiency of the connector connected to the heat dissipation structure can be improved by using a specially designed heat dissipation structure.
附图说明Description of drawings
为了更清楚地说明本申请实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图示出的结构获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative effort.
图1为本申请电芯组件一实施例的结构示意图;Fig. 1 is a schematic structural view of an embodiment of the cell assembly of the present application;
图2为图1中电芯组件在A处的局部放大图;Fig. 2 is a partial enlarged view of the cell assembly at A in Fig. 1;
图3为本申请电芯组件另一实施例的结构示意图;FIG. 3 is a schematic structural view of another embodiment of the cell assembly of the present application;
图4为本申请电芯组件再一实施例的结构示意图;FIG. 4 is a schematic structural view of another embodiment of the cell assembly of the present application;
图5为本申请电芯组件又一实施例的结构示意图。FIG. 5 is a schematic structural diagram of another embodiment of the cell assembly of the present application.
附图标号说明:
Explanation of reference numbers:
本申请目的的实现、功能特点及优点将结合实施例,参照附图做进一步说明。The realization, functional features and advantages of the present application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.
具体实施方式Detailed ways
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本申请的一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.
需要说明,若本申请实施例中有涉及方向性指示(诸如上、下、左、右、 前、后……),则该方向性指示仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等,如果该特定姿态发生改变时,则该方向性指示也相应地随之改变。It should be noted that if there are directional indications (such as up, down, left, right, front, back...), the directional indication is only used to explain the relative positional relationship, movement, etc. Then the directional indication changes accordingly.
另外,若本申请实施例中有涉及“第一”、“第二”等的描述,则该“第一”、“第二”等的描述仅用于描述目的,而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外,全文中出现的“和/或”的含义,包括三个并列的方案,以“A和/或B”为例,包括A方案、或B方案、或A和B同时满足的方案。另外,各个实施例之间的技术方案可以相互结合,但是必须是以本领域普通技术人员能够实现为基础,当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在,也不在本申请要求的保护范围之内。In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes, and cannot be interpreted as indications or hints Its relative importance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the meaning of "and/or" appearing in the whole text includes three parallel schemes, taking "A and/or B" as an example, including scheme A, scheme B, or schemes that both A and B satisfy. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present application.
电池包,例如新能源车辆上所配置的电池包,通常由若干电池模组构成,电池模组又由若干电芯单体构成,连接片固设于电芯单体的极柱上,并用于使不同电芯单体之间形成串联或并联关系。当电池包充放电的电流值较大时,连接片温升较高,并会将热量传递至电芯内部,从而影响到电芯的工作性能和寿命。A battery pack, such as a battery pack configured on a new energy vehicle, is usually composed of several battery modules, and the battery module is composed of several battery cells. The connecting piece is fixed on the pole of the battery cell and used for To form a series or parallel relationship between different battery cells. When the current value of charging and discharging of the battery pack is large, the temperature rise of the connecting piece is high, and the heat will be transferred to the inside of the battery cell, thereby affecting the working performance and life of the battery cell.
鉴于此,本申请提出了一种电芯组件,参照图1和2,在本申请一实施例中,该电芯组件包括:In view of this, the application proposes a cell assembly, referring to Figures 1 and 2, in an embodiment of the application, the cell assembly includes:
电芯10,具有极柱11,电芯10设有至少两个;The electric core 10 has poles 11, and the electric core 10 is provided with at least two;
连接件20,连接于两电芯10的极柱11之间;以及The connecting piece 20 is connected between the poles 11 of the two electric cores 10; and
散热结构30,连接于连接件20。The heat dissipation structure 30 is connected to the connector 20 .
本申请技术方案,通过散热结构30能够将连接件20的热量及时散发,也即提升连接片的散热效率,从而避免连接件20温升过高,特别是在大电流充放电工况下温升过高,导致电芯10单体性能下降的问题,并有利于提升电芯10的使用寿命。容易理解的,连接件20若只是通过与空气进行热交换,则散热效率过低并会迅速温升,而利用专门设置的散热结构30,能提高与散热结构30相连接的连接件20的散热效率。The technical solution of the present application can dissipate the heat of the connector 20 in a timely manner through the heat dissipation structure 30, that is, improve the heat dissipation efficiency of the connector, thereby avoiding the excessive temperature rise of the connector 20, especially in the case of high-current charging and discharging. If the value is too high, the performance of the single battery cell 10 will be reduced, and it is beneficial to improve the service life of the battery cell 10 . It is easy to understand that if the connector 20 only exchanges heat with the air, the heat dissipation efficiency will be too low and the temperature will rise rapidly. However, the heat dissipation of the connector 20 connected to the heat dissipation structure 30 can be improved by using the specially arranged heat dissipation structure 30. efficiency.
请参照图1和2,在一实施例中,散热结构30包括散热件31,散热件31 包括本体段311和延伸段312,电芯10设有多个,多个电芯沿第一方向分布,电芯具有相邻的底面和侧面,底面所在平面与第一方向呈相并行设置,侧面所在平面与第一方向呈相并行设置,多个电芯10的底面均设于本体段311,本体段311用于与电芯10进行热交换;延伸段312超出电芯10的侧面,并用于与连接件20进行热交换。需要说明的是,电芯10的底面并非特指在竖直方向上的下侧,而是既可以是上侧,也可以是下侧。例如,请参照图2,本实施例中,散热件31位于电芯10的下侧;请参照图3,本申请电芯组件另一实施例中,散热件31位于电芯10的上侧。可以理解的,电池包工作时电芯10是主要发热源,所以需要特别针对电芯10设置散热措施。本实施例中,散热件31主要用于对电芯10进行散热,然后借用该散热件31的局部结构(延伸段312)来与连接件20进行热交换,从而能够提高散热结构30的集成度,简化散热结构30的结构,进而在提升连接件20散热效率的前提下,避免对电池包整体重量及体积造成显著增大。可以理解的,在新能源车辆上布置的电池包,对其自身重量及体积极为敏感,所以本实施例的技术方案因结构简单,不会明显增大电池包的体积及重量,而具有较大市场优势。具体而言,连接件20与延伸段312进行热交换,既可以是连接件20直接与延伸段312直接接触并进行热传导,也可以是连接件20通过其他媒介,例如导热硅脂或导热件,与延伸段312间接接触并进行热传导。需要说明的是,当连接件20具有多个时,在连接件20与延伸段312直接接触的实施例中,限定延伸段312的材质配置为导热绝缘材质,如此能够防止多个连接件20之间通过延伸段312产生电气连接。1 and 2, in one embodiment, the heat dissipation structure 30 includes a heat dissipation element 31, the heat dissipation element 31 Including the body section 311 and the extension section 312, there are multiple battery cells 10, and the multiple battery cells are distributed along the first direction. The battery cells have adjacent bottom surfaces and side surfaces, and the plane where the bottom surface is located is parallel to the first direction. The plane where it is located is arranged in parallel with the first direction, and the bottom surfaces of the plurality of battery cells 10 are all set on the body section 311, and the body section 311 is used for heat exchange with the battery cells 10; the extension section 312 exceeds the side of the battery cell 10 and is used for Heat exchange with the connector 20 . It should be noted that the bottom surface of the battery cell 10 does not specifically refer to the lower side in the vertical direction, but can be either the upper side or the lower side. For example, please refer to FIG. 2 , in this embodiment, the heat sink 31 is located on the lower side of the battery cell 10 ; It can be understood that when the battery pack is working, the battery cell 10 is the main heat source, so heat dissipation measures need to be specially provided for the battery cell 10 . In this embodiment, the heat sink 31 is mainly used to dissipate heat from the battery cell 10, and then use the local structure (extension section 312) of the heat sink 31 to exchange heat with the connector 20, thereby improving the integration of the heat dissipation structure 30 , simplifying the structure of the heat dissipation structure 30 , and further avoiding a significant increase in the overall weight and volume of the battery pack on the premise of improving the heat dissipation efficiency of the connector 20 . It can be understood that the battery pack arranged on the new energy vehicle is extremely sensitive to its own weight and volume, so the technical solution of this embodiment is simple in structure and will not significantly increase the volume and weight of the battery pack, and has a relatively large Market Advantage. Specifically, the heat exchange between the connecting piece 20 and the extension section 312 may be that the connecting piece 20 directly contacts the extension section 312 and conducts heat conduction, or the connecting piece 20 passes through other media, such as heat-conducting silicone grease or a heat-conducting piece, It is in indirect contact with the extension section 312 and conducts heat conduction. It should be noted that when there are multiple connectors 20, in the embodiment where the connectors 20 are in direct contact with the extension section 312, the material defining the extension section 312 is configured as a thermally conductive insulating material, which can prevent the connection between the multiple connectors 20. An electrical connection is made between them through the extension segment 312 .
本实施例中,散热结构30还包括导热结构32,导热结构32夹设于连接件20与散热件31之间。如此,通过导热结构32能够及时将连接件20上的热量传导至散热件31上,然后再利用表面积较大的散热件31将热量散发出去,从而进一步提高连接件20的散热效率。In this embodiment, the heat dissipation structure 30 further includes a heat conduction structure 32 , and the heat conduction structure 32 is interposed between the connecting member 20 and the heat dissipation member 31 . In this way, the heat on the connector 20 can be transferred to the heat sink 31 in time through the heat conduction structure 32 , and then the heat is dissipated by the heat sink 31 with a larger surface area, thereby further improving the heat dissipation efficiency of the connector 20 .
在一实施例中,导热结构32的材质配置为绝缘材质。具体而言,例如导热结构32配置为弹性材质的导热件,例如导热硅胶件,或绝缘导热泡棉垫等。如此,首先通过限定导热结构32的材质为绝缘材质,能够防止多个连接件20之间通过导热结构32产生电气连接,从而保证电池包的正常工作。其次,由于导热结构32具有弹性,所以能够预设连接件20与导热结构32之间的装配 干涉量,以消化尺寸公差及装配公差,以保证多个不同的连接件20均能切实抵接在导热结构32上,也即,避免出现部分连接件20与导热结构32脱离的情况,从而保证由连接件20经导热结构32至散热件31,这一热传导路径的有效性。然而本设计不限于此,于其他实施例中,还可以是导热结构配置为填充于连接件与散热件之间的导热胶或导热硅脂。In an embodiment, the material of the heat conduction structure 32 is configured as an insulating material. Specifically, for example, the heat conduction structure 32 is configured as a heat conduction element made of elastic material, such as a heat conduction silicone element, or an insulating heat conduction foam pad, and the like. In this way, firstly, by limiting the material of the heat conduction structure 32 to an insulating material, it is possible to prevent electrical connection between the plurality of connectors 20 through the heat conduction structure 32 , thereby ensuring the normal operation of the battery pack. Secondly, since the heat conduction structure 32 has elasticity, it is possible to preset the assembly between the connecting piece 20 and the heat conduction structure 32 The amount of interference is to digest the dimensional tolerance and assembly tolerance, so as to ensure that a plurality of different connectors 20 can actually abut on the heat conduction structure 32, that is, to avoid the situation that some connectors 20 are separated from the heat conduction structure 32, so as to ensure Effectiveness of the heat conduction path from the connection part 20 to the heat dissipation part 31 through the heat conduction structure 32 . However, the present design is not limited thereto. In other embodiments, the heat conduction structure may also be configured as heat conduction glue or heat conduction silicone grease filled between the connector and the heat sink.
请参照图1和2,在一实施例中,连接件20包括连接板21和抵接翻边22,连接板21连接于两电芯10的极柱11上,抵接翻边22由连接板21的靠近散热件31的侧缘翻折形成,并抵靠于导热结构32。如此,通过设置抵接翻边22既增强了连接件20自身的结构强度,又增大了连接件20与导热结构32的接触面积,从而有利于提升导热效果。当然,在其他实施例中,还可以是连接件配置为连接板,连接板的侧缘直接抵接于导热结构,或者是连接板的侧缘插设于导热结构。Please refer to FIGS. 1 and 2. In one embodiment, the connector 20 includes a connecting plate 21 and an abutting flange 22. The connecting plate 21 is connected to the poles 11 of the two electric cores 10. The abutting flange 22 is formed by the connecting plate. The side edge of 21 close to the heat sink 31 is folded and leans against the heat conducting structure 32 . In this way, the abutment flange 22 not only enhances the structural strength of the connector 20 itself, but also increases the contact area between the connector 20 and the heat conduction structure 32 , which is beneficial to improve the heat conduction effect. Certainly, in other embodiments, the connecting member may also be configured as a connecting plate, and the side edge of the connecting plate directly abuts against the heat conducting structure, or the side edge of the connecting plate is inserted into the heat conducting structure.
请参照图4,在本申请电芯组件再一实施例中,散热结构30设有两个,两个散热结构分别位于电芯10的上、下两侧,并呈相对设置,如此能够进一步提升电芯10及连接件20的散热效率。可以理解的,抵接翻边22相对应地设有两个,并分别连接于连接板21的上、下两侧,也即,连接件20沿上下方向的截面形状呈U字型设置。Please refer to Fig. 4, in another embodiment of the battery cell assembly of the present application, there are two heat dissipation structures 30, and the two heat dissipation structures are respectively located on the upper and lower sides of the battery cell 10, and are arranged oppositely, so that the heat dissipation structure can be further improved. The heat dissipation efficiency of the battery cell 10 and the connector 20 . It can be understood that two abutting flanges 22 are provided correspondingly, and are respectively connected to the upper and lower sides of the connecting plate 21 , that is, the cross-sectional shape of the connecting member 20 along the vertical direction is U-shaped.
请参照图1和2,在一实施例中,至少两电芯10沿第一方向分布,连接板21的中部设有预延伸筋211,预延伸筋211的延伸方向与第一方向呈相交设置,并位于两电芯10的极柱11之间,预延伸筋211的横截面形状呈弯曲或弯折设置。如此,当发生电芯10膨胀,导致两相邻电芯10上的极柱11的间距产生变化时,预延伸筋211能够被随之拉长而适应该间距变化,也即,使连接件20仍能保持与极柱11的有效连接,并正常工作。当然,请参照图5,在本申请电芯组件又一实施例中,连接板21也可以不设置预延伸筋211,也即,连接件20配置为结构简单的L型支架。Please refer to Figures 1 and 2, in one embodiment, at least two battery cells 10 are distributed along the first direction, and the middle part of the connecting plate 21 is provided with a pre-stretching rib 211, and the extension direction of the pre-stretching rib 211 is intersected with the first direction. , and located between the poles 11 of the two electric cores 10, the cross-sectional shape of the pre-extended ribs 211 is curved or bent. In this way, when the cell 10 expands and the distance between the poles 11 on two adjacent cells 10 changes, the pre-extended ribs 211 can be elongated accordingly to adapt to the change in the distance, that is, the connector 20 It can still maintain an effective connection with the pole 11 and work normally. Of course, referring to FIG. 5 , in another embodiment of the cell assembly of the present application, the connecting plate 21 may not be provided with pre-stretching ribs 211 , that is, the connecting member 20 is configured as an L-shaped bracket with a simple structure.
在本实施例中,连接板21与抵接翻边22一体冲压成型设置。如此,能够降低连接件20的制造成本,且增强抵接翻边22与连接板21之间的连接强度,从而保证抵接翻边22能更贴合在导热结构32上。当然,在其他实施例中,还可以是连接件采用铸造或锻造工艺成型,又或者是挤压工艺成型,例如连接件采用挤压成型的石墨烯板等。 In this embodiment, the connecting plate 21 and the abutting flange 22 are integrally stamped and formed. In this way, the manufacturing cost of the connecting member 20 can be reduced, and the connection strength between the abutting flange 22 and the connecting plate 21 can be enhanced, so as to ensure that the abutting flange 22 can be more attached to the heat conducting structure 32 . Certainly, in other embodiments, the connecting part may also be formed by casting or forging process, or formed by extrusion process, for example, the connecting part is formed by extruded graphene plate and the like.
在本实施例中,抵接翻边22对应预延伸筋211设有让位口22a,连接板21设有与让位口22a相连通的避让缺口21a,预延伸筋211连接于避让缺口21a的边缘。如此,通过对应预延伸筋211作出避让结构(包括让位口22a和避让缺口21a),便于保证抵接翻边22冲压成型的良品率,并保证不同连接件20产品的质量一致性,从而保证多个连接件20上的抵接翻边22均能良好地贴合在导热结构32上。当然,在铸造连接件的实施例中,可以不设置让位口及避让缺口的结构。In this embodiment, the abutment flange 22 is provided with a relief opening 22a corresponding to the pre-extension rib 211, and the connecting plate 21 is provided with an escape gap 21a communicating with the escape opening 22a, and the pre-extension rib 211 is connected to the escape gap 21a. edge. In this way, by making an avoidance structure corresponding to the pre-extended rib 211 (including the escape opening 22a and the avoidance notch 21a), it is convenient to ensure the yield rate of the stamping forming of the abutment flange 22, and to ensure the quality consistency of different connectors 20 products, thereby ensuring The abutting flanges 22 on the plurality of connectors 20 can fit well on the heat conducting structure 32 . Of course, in the embodiment of the cast connector, the structure of the relief opening and the relief notch may not be provided.
请参照图1和2,在一实施例中,连接件20设有多个,多个连接件20沿第一方向间隔分布,导热结构32沿第一方向延伸,并与至少两连接件20连接。如此,通过一个导热结构32实现与多个连接件20的连接,既能够简化装配步骤,从而提高电池包的装配效率,又能更容易保证不同连接件20与导热结构32均有效连接,也即,保证装配质量的一致性。当然,在其他实施例中,还可以是每一连接件对应设置一独立的导热结构,或者抵接翻边的两端各自对应设置一独立的导热结构。Please refer to FIGS. 1 and 2. In one embodiment, there are multiple connectors 20, the plurality of connectors 20 are spaced along the first direction, and the heat conduction structure 32 extends along the first direction and is connected to at least two connectors 20. . In this way, the connection with multiple connectors 20 is realized through one heat conduction structure 32, which can not only simplify the assembly steps, thereby improving the assembly efficiency of the battery pack, but also make it easier to ensure that different connectors 20 are effectively connected to the heat conduction structures 32, that is, , to ensure the consistency of assembly quality. Of course, in other embodiments, it is also possible that each connecting piece is correspondingly provided with an independent heat conducting structure, or that two ends abutting against the flange are respectively provided with an independent heat conducting structure.
请参照图1和2,在一实施例中,连接板21遮盖极柱11设置。如此,通过尽量做大连接板21的横截面积,能提高其电流导通性能,从而降低其电阻,并改善工作时发热、温升的问题。当然,在其他实施例中,还可以是连接板遮盖部分极柱设置。Referring to FIGS. 1 and 2 , in an embodiment, the connecting plate 21 is arranged to cover the pole 11 . In this way, by making the cross-sectional area of the connecting plate 21 as large as possible, its current conduction performance can be improved, thereby reducing its resistance, and improving the problems of heat generation and temperature rise during operation. Certainly, in other embodiments, it is also possible that the connecting plate covers part of the pole arrangement.
在一实施例中,连接板21焊接固设于极柱11。如此,通过焊接方式固定,能够提高连接板21与极柱11之间的连接强度,保证这两者之间的连接稳定性和可靠性,并且安装工艺简单、易操作,有利于提高电池包的生产效率。当然,在其他实施例中,连接板还可以通过螺钉锁附或卡接结构安装在电芯上,并抵接于极柱。In one embodiment, the connecting plate 21 is welded and fixed on the pole 11 . In this way, fixing by welding can improve the connection strength between the connection plate 21 and the pole 11, ensure the stability and reliability of the connection between the two, and the installation process is simple and easy to operate, which is conducive to improving the reliability of the battery pack. Productivity. Of course, in other embodiments, the connecting plate can also be installed on the battery core through a screw locking or clamping structure, and abut against the pole.
在一实施例中,散热件31设有冷媒通道,冷媒通道用于供冷媒流通。如此,通过液冷方式使散热件31能够快速对电芯10及连接件20进行热交换,从而提升电芯10组件的整体散热效率。具体而言,本实施例中,冷媒配置为水和酒精的混合物。当然,其他实施例中,散热件31还可以不设置冷媒通道,而是在表面涂覆热辐射性能良好的涂料;冷媒还可以是水,或者是氟化液等。In one embodiment, the cooling element 31 is provided with a refrigerant channel, and the refrigerant channel is used for circulating the refrigerant. In this way, the heat dissipation element 31 can rapidly exchange heat between the battery cell 10 and the connecting piece 20 through liquid cooling, thereby improving the overall heat dissipation efficiency of the battery cell 10 assembly. Specifically, in this embodiment, the refrigerant is configured as a mixture of water and alcohol. Of course, in other embodiments, the heat sink 31 may not be provided with a refrigerant channel, but a paint with good heat radiation performance may be coated on the surface; the refrigerant may also be water, or a fluorinated liquid, and the like.
本申请还提出一种电池装置,包括前述的电芯组件,该电芯组件的具体 结构参照上述实施例,由于本电池装置采用了上述所有实施例的全部技术方案,因此至少具有上述实施例的技术方案所带来的所有有益效果,在此不再一一赘述。The present application also proposes a battery device, including the aforementioned cell assembly, and the specific details of the cell assembly Referring to the above embodiments for structure, since this battery device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be repeated here.
以上所述仅为本申请的可选实施例,并非因此限制本申请的专利范围,凡是在本申请的发明构思下,利用本申请说明书及附图内容所作的等效结构变换,或直接/间接运用在其他相关的技术领域均包括在本申请的专利保护范围内。 The above are only optional embodiments of the present application, and are not intended to limit the patent scope of the present application. Under the inventive concept of the present application, the equivalent structural transformations made by using the description of the application and the contents of the accompanying drawings, or direct/indirect Applications in other relevant technical fields are included in the patent protection scope of the present application.

Claims (10)

  1. 一种电芯组件,包括:A battery pack, comprising:
    电芯,具有极柱,所述电芯设有至少两个;The electric core has poles, and the electric core is provided with at least two poles;
    连接件,连接于两所述电芯的极柱之间;以及a connector, connected between the poles of the two electric cores; and
    散热结构,连接于所述连接件。The heat dissipation structure is connected to the connector.
  2. 如权利要求1所述的电芯组件,其中,所述散热结构包括散热件,所述散热件包括本体段和延伸段,所述电芯设有多个,多个所述电芯的底面设于所述本体段,所述本体段用于与所述电芯进行热交换;所述延伸段超出所述电芯的侧面,并用于与所述连接件进行热交换。The electric core assembly according to claim 1, wherein the heat dissipation structure includes a heat dissipation element, the heat dissipation element includes a body section and an extension section, there are a plurality of the electric cores, and the bottom surfaces of the plurality of electric cores are arranged As for the body section, the body section is used for heat exchange with the electric core; the extension section is beyond the side of the electric core and is used for heat exchange with the connecting piece.
  3. 如权利要求2所述的电芯组件,其中,所述散热结构还包括导热结构,所述导热结构夹设于所述连接件与所述散热件之间。The battery cell assembly according to claim 2, wherein the heat dissipation structure further comprises a heat conduction structure, and the heat conduction structure is interposed between the connecting piece and the heat dissipation piece.
  4. 如权利要求3所述的电芯组件,其中,所述导热结构的材质配置为绝缘材质;The battery cell assembly according to claim 3, wherein the material of the heat conducting structure is configured as an insulating material;
    和/或,所述导热结构配置为弹性材质的导热件;或者,所述导热结构配置为填充于所述连接件与所述散热件之间的导热胶或导热硅脂。And/or, the heat conduction structure is configured as a heat conduction element made of elastic material; or, the heat conduction structure is configured as heat conduction glue or heat conduction silicone grease filled between the connection element and the heat dissipation element.
  5. 如权利要求3所述的电芯组件,其中,所述连接件包括连接板和抵接翻边,所述连接板连接于两所述电芯的极柱上,所述抵接翻边由所述连接板的靠近所述散热件的侧缘翻折形成,并抵靠于所述导热结构。The cell assembly according to claim 3, wherein the connecting member comprises a connecting plate and an abutting flange, the connecting plate is connected to the pole posts of the two electric cells, and the abutting flange is formed by the abutting flange. The side edge of the connecting plate close to the heat sink is folded and leans against the heat conducting structure.
  6. 如权利要求5所述的电芯组件,其中,至少两所述电芯沿第一方向分布,所述连接板的中部设有预延伸筋,所述预延伸筋的延伸方向与所述第一方向呈相交设置,并位于两所述电芯的极柱之间,所述预延伸筋的横截面形状呈弯曲或弯折设置。The battery cell assembly according to claim 5, wherein at least two of the battery cells are distributed along a first direction, and a pre-stretching rib is provided in the middle of the connecting plate, and the extension direction of the pre-stretching rib is the same as that of the first The directions are intersecting, and are located between the poles of the two electric cores, and the cross-sectional shape of the pre-stretching ribs is bent or bent.
  7. 如权利要求6所述的电芯组件,其中,所述连接板与所述抵接翻边一 体冲压成型设置;The cell assembly according to claim 6, wherein the connecting plate and the abutting flange body stamping setup;
    和/或,所述抵接翻边对应所述预延伸筋设有让位口,所述连接板设有与所述让位口相连通的避让缺口,所述预延伸筋连接于所述避让缺口的边缘。And/or, the abutment flange is provided with a relief opening corresponding to the pre-extension rib, and the connecting plate is provided with a relief gap communicating with the relief opening, and the pre-extension rib is connected to the relief opening. edge of the notch.
  8. 如权利要求6所述的电芯组件,其中,所述连接件设有多个,多个所述连接件沿第一方向间隔分布,所述导热结构沿所述第一方向延伸,并与至少两所述连接件连接。The cell assembly according to claim 6, wherein a plurality of connecting parts are provided, and the plurality of connecting parts are distributed along the first direction at intervals, and the heat conducting structure extends along the first direction and is connected to at least one The two connectors are connected.
  9. 如权利要求5所述的电芯组件,其中,所述连接板遮盖所述极柱设置;The cell assembly according to claim 5, wherein the connecting plate covers the pole arrangement;
    和/或,所述连接板焊接固设于所述极柱。And/or, the connecting plate is welded and fixed on the pole.
  10. 一种电池装置,包括如权利要求1至9任一项所述的电芯组件。 A battery device, comprising the cell assembly according to any one of claims 1-9.
PCT/CN2023/079423 2022-03-03 2023-03-02 Cell assembly and battery device WO2023165579A1 (en)

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