WO2024036750A1 - Battery module and power battery - Google Patents

Battery module and power battery Download PDF

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Publication number
WO2024036750A1
WO2024036750A1 PCT/CN2022/127543 CN2022127543W WO2024036750A1 WO 2024036750 A1 WO2024036750 A1 WO 2024036750A1 CN 2022127543 W CN2022127543 W CN 2022127543W WO 2024036750 A1 WO2024036750 A1 WO 2024036750A1
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WO
WIPO (PCT)
Prior art keywords
battery
battery module
top cover
tray
module according
Prior art date
Application number
PCT/CN2022/127543
Other languages
French (fr)
Chinese (zh)
Inventor
欧阳效群
李凡
陈朝海
陈智伟
Original Assignee
湖北亿纬动力有限公司
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
Application filed by 湖北亿纬动力有限公司 filed Critical 湖北亿纬动力有限公司
Publication of WO2024036750A1 publication Critical patent/WO2024036750A1/en

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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
    • H01M10/04—Construction or manufacture in general
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-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
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • 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
    • H01M50/258—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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • 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
    • H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
    • 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

  • This application relates to the field of battery technology, for example, to a battery module and a power battery.
  • Battery modules usually include components such as battery packs, trays, and battery module collection integration components (Cell Contacting System, CCS components). Among them, the battery pack is fixed on the tray through foam glue. If the cells in the battery pack experience thermal runaway, the foam rubber will easily carbonize in a high-temperature environment, and the viscosity of the foam rubber will weaken. At the same time, The high-temperature and high-pressure gas inside the battery core spurts out from the pressure relief valve of the battery core, causing the battery core to break away from the foam rubber and spurt upward, causing heat diffusion problems; in addition, CCS components usually include copper bars and brackets to fix the copper bars. During the transportation and use of battery modules, vibration often occurs.
  • CCS components Cell Contacting System
  • This application provides a battery module that can reduce the probability of heat diffusion and avoid internal stress in CCS components.
  • this application provides a
  • Battery module including:
  • the pallet is provided with a first receiving slot
  • the top cover is buckled and connected to the tray, and the top cover and the first containing groove form a containing cavity;
  • the battery core group is arranged in the accommodation cavity
  • the CCS component includes a connecting row and a bracket.
  • the connecting row is installed on the bracket.
  • the connecting row and bracket are located between the battery pack and the top cover;
  • Top structural glue The gaps between the connecting rows, brackets and top covers are filled with top structural glue.
  • the battery module further includes a bottom structural adhesive, and the battery pack is fixed to the bottom of the first receiving tank through the bottom structural adhesive.
  • the battery module further includes a liquid cooling plate.
  • the liquid cooling plate is disposed in the receiving cavity and is used to absorb heat generated by the battery pack.
  • the top cover is provided with a second accommodation groove, and the second accommodation groove cooperates with the first accommodation groove to form an accommodation cavity.
  • the tray and the top cover are connected through a connector.
  • the number of connecting members is multiple, and the multiple connecting members are evenly distributed along the circumferential direction of the pallet.
  • the connecting member includes a bolt and a nut, and the bolt is threadedly engaged with the nut.
  • the bottom of the first receiving groove is provided with protruding ribs.
  • the number of protruding ribs is multiple, and the plurality of protruding ribs are evenly distributed on the bottom of the first receiving groove.
  • the present application provides a power battery.
  • the power battery includes a battery box and the above-mentioned battery module.
  • the battery module is installed in the battery box.
  • the top cover and the tray are buckled and connected, so that the top cover and the first accommodation groove form an accommodation cavity, and the battery core group is arranged in the accommodation cavity.
  • the top cover blocks the upward spraying of the battery core, thereby reducing the probability of heat diffusion; in addition, the gaps between the connecting row, the bracket and the top cover are all passed through the top Structural glue filling, that is, the top structural glue is used to realize the bonding and fixing between the connecting rows and the bonding and fixing between the CCS component and the top cover, which avoids the relative motion of the connecting row relative to the bracket when the battery module vibrates.
  • the top structural adhesive also improves the structural strength of the top cover.
  • the top cover blocks the upward movement of the battery cells, When spraying, it can avoid the problem of deformation of the top cover, which plays a very good role in maintaining the structural consistency of the battery module.
  • the power battery provided by this application uses the above-mentioned battery module.
  • the top cover of the battery module can block the battery core, thereby reducing the probability of thermal diffusion of the power battery, effectively improving the efficiency of the power battery.
  • Safety in addition, when the power battery vibrates, the internal stress of the CCS component is small, so it plays a good role in ensuring the connection stability and reliability of the connecting row and bracket, effectively improving the stability of the power battery operation. .
  • Figure 1 is a schematic diagram of the exploded structure of the battery module provided by this application.
  • connection should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integral body; it can be It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components or an interaction between two components.
  • connection can be a fixed connection, a detachable connection, or an integral body; it can be It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components or an interaction between two components.
  • a first feature to a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact. contact but through additional characteristic contact between them.
  • the terms “above”, “above” and “above” a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature.
  • “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • This embodiment provides a battery module that can reduce the probability of heat diffusion and avoid the problem of internal stress in CCS components.
  • the battery module includes a tray 100, a top cover 200, a battery pack 300, a CCS component 400 and a top structural glue 500.
  • the tray 100 is provided with a first receiving slot 110, and the top cover 200 and The tray 100 is snap-fitted, and the top cover 200 and the first receiving slot 110 form a receiving cavity, and the battery pack 300 is arranged in the receiving cavity.
  • the CCS assembly 400 includes a connecting row 410 and a bracket 420, and the connecting row 410 is installed on the bracket 420.
  • the connection row 410 and the bracket 420 are located between the battery pack 300 and the top cover 200 .
  • the gaps between the connection row 410 , the bracket 420 and the top cover 200 are filled with the top structural glue 500 .
  • the top cover 200 is snap-fitted to the tray 100 so that the top cover 200 and the first receiving slot 110 form a receiving cavity, and the battery pack 300 is placed in the receiving cavity.
  • the top cover 200 blocks the upward ejection of the battery core, thereby reducing the probability of heat diffusion.
  • the gaps between the connecting row 410, the bracket 420 and the top cover 200 are all filled with the top structural glue 500, that is, the top structural glue 500 is used to realize the bonding and fixation between the connecting row 410 and the bracket 420, and the CCS component 400 and the top cover.
  • the adhesive fixation between 200 avoids the problem of relative movement of the connection row 410 relative to the bracket 420 when the battery module vibrates, thereby avoiding the problem of internal stress in the CCS component 400 and improving the connection between the connection row 410 and the bracket 420 Connection stability and reliability.
  • the top structural adhesive 500 also improves the structural strength of the top cover 200. When the top cover 200 blocks the upward ejection of the battery cells, it can avoid the problem of deformation of the top cover 200, which plays a good role in maintaining the structural consistency of the battery module. effect. Since the structural adhesive also has good sealing properties, filling the gaps between the connecting row 410, the bracket 420 and the top cover 200 with the top structural adhesive 500 also achieves a sealing effect on the top of the battery module.
  • connection row 410 is made of copper material. Copper material has good conductive properties and is cheap. Of course, in other embodiments, the connection row 410 can also be made of aluminum material or other materials with better properties. Made of conductive material.
  • the battery module also includes a bottom structural adhesive 600 .
  • the battery pack 300 is fixed to the bottom of the first accommodation slot 110 through the bottom structural adhesive 600 to prevent the battery module from shaking or colliding.
  • the problem of shaking or relative movement occurs, which improves the stability of the battery pack 300 being fixed in the accommodation cavity.
  • the bottom structural adhesive 600 is used Fixing the battery pack 300 at the bottom of the first receiving slot 110 also achieves a sealing effect at the bottom of the battery module, so that the battery module as a whole has better sealing performance.
  • the tray 100 and the top cover 200 are connected through connectors, and the connectors are threaded bolts and nuts.
  • the threaded connection method of bolts and nuts is relatively simple and has high connection reliability.
  • the connecting piece can also be a buckle or other connecting piece.
  • the number of connectors is multiple, and the multiple connectors are evenly distributed along the circumferential direction of the tray 100, which not only improves the reliability of the connection between the tray 100 and the top cover 200, but also improves the uniformity of the connection between the two. .
  • the battery module also includes a liquid cooling plate 700.
  • the liquid cooling plate 700 is disposed in the accommodation cavity.
  • the liquid cooling plate 700 is used to absorb the heat emitted by the battery core group 300 to achieve the purpose of maintaining the battery core.
  • the cooling effect of the battery pack 300 reduces the probability of thermal runaway of the cells in the battery pack 300 and improves the safety of the battery module.
  • the top cover 200 is provided with a second accommodating groove, and the second accommodating groove cooperates with the first accommodating groove 110 to form an accommodating cavity, so as to expand the volume of the accommodating cavity and increase the volume of the battery pack 300 disposed in the accommodating cavity, thereby To achieve the effect of improving battery energy density.
  • the bottom of the first receiving groove 110 is provided with protruding ribs 111 to improve the structural strength of the bottom of the tray 100 , thereby improving the load-bearing capacity of the tray 100 and the overall structural strength of the battery module.
  • the shape of the protruding rib 111 is generally cylindrical, annular or irregular. The specific shape of the protruding rib 111 may be determined according to the actual situation.
  • the number of protruding ribs 111 is multiple, and the plurality of protruding ribs 111 are evenly distributed at the bottom of the first receiving groove 110 , which on the one hand improves the structural strength of the bottom of the tray 100 and on the other hand On the one hand, the uniformity of the structural strength of the bottom of the tray 100 is improved, thereby making the overall load-bearing capacity of the tray 100 more uniform, and the overall structural strength of the battery module more uniform.
  • the bottom of the battery pack 300 and the bottom of the first receiving tank 110 are fixed by the bottom structural glue 600
  • the CCS component 400 and the top cover 200 are fixed by the top structural glue 500
  • the CCS The connection row 410 of the component 400 and the bracket 420 are also fixed by the top structural glue 500.
  • the battery pack 300 can be well fixed at the bottom of the first accommodation tank 110, and CCS
  • the internal stress of the component 400 is also small; the top structural glue 500 and the bottom structural glue 600 realize the sealing of the battery module, eliminating the remaining sealing structure of the battery module; the battery module eliminates the need for foaming in related technologies glue, effectively reducing the production cost of the battery module; if the cells in the battery pack 300 undergo thermal runaway, the top cover 200 can prevent the cells from ejecting upward, thus reducing the probability of heat diffusion and improving the efficiency of the battery module. security.
  • This embodiment also provides a power battery, which has high safety and operational stability.
  • the power battery includes a battery box and the above-mentioned battery module.
  • the battery module is installed in the battery box.
  • the top cover 200 of the battery module can block the battery core, thereby causing the power battery to fail.
  • the probability of heat diffusion is low, which effectively improves the safety of the power battery; in addition, when the power battery vibrates, the internal stress of the CCS component 400 is small, which affects the connection stability and reliability of the connection row 410 and the bracket 420. It has a very good protective effect and effectively improves the stability of the power battery operation.

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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)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

Disclosed in the present application are a battery module and a power battery. The battery module comprises a tray, a top cover, a battery cell group, a CCS assembly and a top structural adhesive. The tray is provided with a first accommodating recess; the top cover is snap-connected to the tray, and the top cover and the first accommodating recess form an accommodating cavity, the battery cell group being arranged in the accommodating cavity; the CCS assembly comprises a support and a connection bar installed on the support, the connection bar and the support both being located between the battery cell group and the top cover, and gaps between the connection bar, the support and the top cover being all filled by means of the top structural adhesive.

Description

电池模组及动力电池Battery modules and power batteries
本申请要求在2022年08月17日提交中国专利局、申请号为202222176383.0的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。This application claims priority to the Chinese patent application with application number 202222176383.0, which was submitted to the China Patent Office on August 17, 2022. The entire content of this application is incorporated into this application by reference.
技术领域Technical field
本申请涉及电池技术领域，例如涉及一种电池模组及动力电池。This application relates to the field of battery technology, for example, to a battery module and a power battery.
背景技术Background technique
电池模组通常包括电芯组、托盘和电池模组采集集成件(Cell Contacting System，CCS组件)等部件。其中，电芯组通过发泡胶粘接固定在托盘上，若电芯组中的电芯发生热失控，则发泡胶容易在高温环境下发生碳化，进而发泡胶的粘度减弱，同时，电芯内部的高温高压气体从电芯的泄压阀喷出，使得电芯脱离发泡胶并向上喷窜，引发热扩散的问题；另外，CCS组件通常包括铜排和固定铜排的支架，在电池模组的运输和使用过程中，往往会发生振动现象，该振动将导致铜排发生一定的振幅，使得铜排与支架发生相对运动，进而产生了CCS组件的内应力，CCS组件的内应力严重降低了铜排与支架连接的稳定性和可靠性。Battery modules usually include components such as battery packs, trays, and battery module collection integration components (Cell Contacting System, CCS components). Among them, the battery pack is fixed on the tray through foam glue. If the cells in the battery pack experience thermal runaway, the foam rubber will easily carbonize in a high-temperature environment, and the viscosity of the foam rubber will weaken. At the same time, The high-temperature and high-pressure gas inside the battery core spurts out from the pressure relief valve of the battery core, causing the battery core to break away from the foam rubber and spurt upward, causing heat diffusion problems; in addition, CCS components usually include copper bars and brackets to fix the copper bars. During the transportation and use of battery modules, vibration often occurs. This vibration will cause the copper bar to have a certain amplitude, causing the copper bar and the bracket to move relative to each other, which in turn generates internal stress in the CCS component. The stress seriously reduces the stability and reliability of the connection between the copper bar and the bracket.
发明内容Contents of the invention
本申请提供一种电池模组，该电池模组能够降低热扩散的几率，还能够避免CCS组件产生内应力。This application provides a battery module that can reduce the probability of heat diffusion and avoid internal stress in CCS components.
第一方面，本申请提供了一种Firstly, this application provides a
电池模组，包括：Battery module, including:
托盘，托盘设有第一容纳槽；The pallet is provided with a first receiving slot;
顶盖，顶盖与托盘扣合连接，且顶盖与第一容纳槽形成容纳腔；The top cover is buckled and connected to the tray, and the top cover and the first containing groove form a containing cavity;
电芯组，电芯组设置于容纳腔内；The battery core group is arranged in the accommodation cavity;
CCS组件，CCS组件包括连接排和支架，连接排安装于支架上，连接排和支架均位于电芯组与顶盖之间；CCS component. The CCS component includes a connecting row and a bracket. The connecting row is installed on the bracket. The connecting row and bracket are located between the battery pack and the top cover;
顶部结构胶，连接排、支架以及顶盖之间的间隙均通过顶部结构胶填充。Top structural glue. The gaps between the connecting rows, brackets and top covers are filled with top structural glue.
在一实施例中，电池模组还包括底部结构胶，电芯组通过底部结构胶固定于第一容纳槽的槽底。In one embodiment, the battery module further includes a bottom structural adhesive, and the battery pack is fixed to the bottom of the first receiving tank through the bottom structural adhesive.
在一实施例中，电池模组还包括液冷板，液冷板设置于容纳腔内，液冷板用于吸收电芯组发出的热量。In one embodiment, the battery module further includes a liquid cooling plate. The liquid cooling plate is disposed in the receiving cavity and is used to absorb heat generated by the battery pack.
在一实施例中，顶盖设有第二容纳槽，第二容纳槽与第一容纳槽配合形成容纳腔。In one embodiment, the top cover is provided with a second accommodation groove, and the second accommodation groove cooperates with the first accommodation groove to form an accommodation cavity.
在一实施例中，托盘与顶盖通过连接件连接。In one embodiment, the tray and the top cover are connected through a connector.
在一实施例中，连接件的数量为多个，多个连接件沿托盘的周向均匀分布。In one embodiment, the number of connecting members is multiple, and the multiple connecting members are evenly distributed along the circumferential direction of the pallet.
在一实施例中，连接件包括螺栓和螺母，螺栓与螺母螺纹配合。In one embodiment, the connecting member includes a bolt and a nut, and the bolt is threadedly engaged with the nut.
在一实施例中，第一容纳槽的槽底设有凸肋。In one embodiment, the bottom of the first receiving groove is provided with protruding ribs.
在一实施例中，凸肋的数量为多个，多个凸肋均匀分布于第一容纳槽的槽底。In one embodiment, the number of protruding ribs is multiple, and the plurality of protruding ribs are evenly distributed on the bottom of the first receiving groove.
第二方面，本申请的提供一种动力电池，该动力电池，包括电池箱以及上述的电池模组，电池模组安装于电池箱内。In a second aspect, the present application provides a power battery. The power battery includes a battery box and the above-mentioned battery module. The battery module is installed in the battery box.
本申请的有益效果：Beneficial effects of this application:
本申请提供的电池模组，将顶盖与托盘扣合连接，使顶盖与第一容纳槽形成容纳腔，将电芯组设置在容纳腔内，当电芯发生热失控时，若电芯内的高温高压气体从泄压阀喷出，则顶盖起到了遮挡电芯向上喷窜的效果，进而降低了热扩散的几率；另外，连接排、支架以及顶盖之间的间隙均通过顶部结构胶填充，即，通过顶部结构胶实现连接排与之间的粘接固定，以及CCS组件与顶盖之间的粘接固定，避免了电池模组发生振动时，连接排相对于支架产生相对移动的问题，进而避免了CCS组件产生内应力的问题，提高了连接排与支架连接的稳定性和可靠性，并且，顶部结构胶还提高了顶盖的结构强度，当顶盖阻挡电芯向上喷窜时，能够避免顶盖发生变形的问题，对保持电池模组结构一致性起到了很好的保障作用。In the battery module provided by this application, the top cover and the tray are buckled and connected, so that the top cover and the first accommodation groove form an accommodation cavity, and the battery core group is arranged in the accommodation cavity. When the battery core undergoes thermal runaway, if the battery core When the high-temperature and high-pressure gas inside is ejected from the pressure relief valve, the top cover blocks the upward spraying of the battery core, thereby reducing the probability of heat diffusion; in addition, the gaps between the connecting row, the bracket and the top cover are all passed through the top Structural glue filling, that is, the top structural glue is used to realize the bonding and fixing between the connecting rows and the bonding and fixing between the CCS component and the top cover, which avoids the relative motion of the connecting row relative to the bracket when the battery module vibrates. This avoids the problem of internal stress in CCS components and improves the stability and reliability of the connection between the connection row and the bracket. Moreover, the top structural adhesive also improves the structural strength of the top cover. When the top cover blocks the upward movement of the battery cells, When spraying, it can avoid the problem of deformation of the top cover, which plays a very good role in maintaining the structural consistency of the battery module.
本申请提供的动力电池，采用上述的电池模组，当电芯发生热失控时，电池模组的顶盖能够遮挡电芯，进而动力电池发生热扩散的几率较低，有效提高了动力电池的安全性；另外，该动力电池发生振动时，CCS组件的内应力较小， 因此对连接排和支架的连接稳定性和可靠性起到了很好的保障作用，有效提高了动力电池运行的稳定性。The power battery provided by this application uses the above-mentioned battery module. When the battery core undergoes thermal runaway, the top cover of the battery module can block the battery core, thereby reducing the probability of thermal diffusion of the power battery, effectively improving the efficiency of the power battery. Safety; in addition, when the power battery vibrates, the internal stress of the CCS component is small, so it plays a good role in ensuring the connection stability and reliability of the connecting row and bracket, effectively improving the stability of the power battery operation. .
附图说明Description of drawings
图1是本申请提供的电池模组的爆炸结构示意图。Figure 1 is a schematic diagram of the exploded structure of the battery module provided by this application.
图中：In the picture:
100、托盘；110、第一容纳槽；111、凸肋；200、顶盖；300、电芯组；400、CCS组件；410、连接排；420、支架；500、顶部结构胶；600、底部结构胶；700、液冷板。100. Tray; 110. First receiving groove; 111. Protruding ribs; 200. Top cover; 300. Cell group; 400. CCS assembly; 410. Connection row; 420. Bracket; 500. Top structural glue; 600. Bottom Structural adhesive; 700, liquid cooling plate.
具体实施方式Detailed ways
在本申请的描述中，除非另有明确的规定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可视具体情况理解上述术语在本申请中的具体含义。In the description of this application, unless otherwise clearly stated, the terms "connected", "connected" and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components or an interaction between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application may be understood based on specific circumstances.
在本申请中，除非另有明确的规定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。In this application, unless expressly stated otherwise, "above" or "below" a first feature to a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact. contact but through additional characteristic contact between them. Furthermore, the terms "above", "above" and "above" a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature. “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.
在本实施例的描述中，术语“上”、“下”、“右”、等方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化操作，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作。此外，术语“第一”、“第二”仅仅用于在描述上加以区分，并没有特殊的含义。In the description of this embodiment, the terms "upper", "lower", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplified operation, rather than instructions. or to imply that the device or element referred to must be oriented, constructed, and operate in a particular orientation. In addition, the terms "first" and "second" are only used for descriptive purposes and have no special meaning.
本实施例提供一种电池模组，能够降低热扩散的几率，还能够避免CCS组件产生内应力的问题。This embodiment provides a battery module that can reduce the probability of heat diffusion and avoid the problem of internal stress in CCS components.
可选地，如图1所示，该电池模组包括托盘100、顶盖200、电芯组300、CCS组件400以及顶部结构胶500，托盘100设有第一容纳槽110，顶盖200与托盘100扣合连接，且顶盖200与第一容纳槽110形成容纳腔，电芯组300设 置于容纳腔内，CCS组件400包括连接排410和支架420，连接排410安装于支架420上，连接排410和支架420均位于电芯组300与顶盖200之间，连接排410、支架420以及顶盖200之间的间隙均通过顶部结构胶500填充。Optionally, as shown in Figure 1, the battery module includes a tray 100, a top cover 200, a battery pack 300, a CCS component 400 and a top structural glue 500. The tray 100 is provided with a first receiving slot 110, and the top cover 200 and The tray 100 is snap-fitted, and the top cover 200 and the first receiving slot 110 form a receiving cavity, and the battery pack 300 is arranged in the receiving cavity. The CCS assembly 400 includes a connecting row 410 and a bracket 420, and the connecting row 410 is installed on the bracket 420. The connection row 410 and the bracket 420 are located between the battery pack 300 and the top cover 200 . The gaps between the connection row 410 , the bracket 420 and the top cover 200 are filled with the top structural glue 500 .
该电池模组中，顶盖200与托盘100扣合连接，使顶盖200与第一容纳槽110形成容纳腔，将电芯组300设置在容纳腔内，当电芯发生热失控时，若电芯内的高温高压气体从泄压阀喷出，则顶盖200起到了遮挡电芯向上喷窜的效果，进而降低了热扩散的几率。连接排410、支架420以及顶盖200之间的间隙均通过顶部结构胶500填充，即，通过顶部结构胶500实现连接排410与支架420之间的粘接固定，以及CCS组件400与顶盖200之间的粘接固定，避免了电池模组发生振动时，连接排410相对于支架420产生相对移动的问题，进而避免了CCS组件400产生内应力的问题，提高了连接排410与支架420连接的稳定性和可靠性。顶部结构胶500还提高了顶盖200的结构强度，当顶盖200阻挡电芯向上喷窜时，能够避免顶盖200发生变形的问题，对保持电池模组结构一致性起到了很好的保障作用。由于结构胶还具有较好的密封特性，将顶部结构胶500填充在连接排410、支架420以及顶盖200之间的间隙，还实现了电池模组顶部的密封效果。In this battery module, the top cover 200 is snap-fitted to the tray 100 so that the top cover 200 and the first receiving slot 110 form a receiving cavity, and the battery pack 300 is placed in the receiving cavity. When the battery core undergoes thermal runaway, if When the high-temperature and high-pressure gas in the battery core is ejected from the pressure relief valve, the top cover 200 blocks the upward ejection of the battery core, thereby reducing the probability of heat diffusion. The gaps between the connecting row 410, the bracket 420 and the top cover 200 are all filled with the top structural glue 500, that is, the top structural glue 500 is used to realize the bonding and fixation between the connecting row 410 and the bracket 420, and the CCS component 400 and the top cover. The adhesive fixation between 200 avoids the problem of relative movement of the connection row 410 relative to the bracket 420 when the battery module vibrates, thereby avoiding the problem of internal stress in the CCS component 400 and improving the connection between the connection row 410 and the bracket 420 Connection stability and reliability. The top structural adhesive 500 also improves the structural strength of the top cover 200. When the top cover 200 blocks the upward ejection of the battery cells, it can avoid the problem of deformation of the top cover 200, which plays a good role in maintaining the structural consistency of the battery module. effect. Since the structural adhesive also has good sealing properties, filling the gaps between the connecting row 410, the bracket 420 and the top cover 200 with the top structural adhesive 500 also achieves a sealing effect on the top of the battery module.
可选地，上述连接排410采用铜质材料制成，铜质材料具有很好的导电特性且价格低廉，当然，在其他实施方案中，连接排410也可以选用铝质材料等其他具有较好导电特性的材料制成。Optionally, the above-mentioned connection row 410 is made of copper material. Copper material has good conductive properties and is cheap. Of course, in other embodiments, the connection row 410 can also be made of aluminum material or other materials with better properties. Made of conductive material.
在一实施例中，如图1所示，电池模组还包括底部结构胶600，电芯组300通过底部结构胶600固定于第一容纳槽110的槽底，防止电池模组发生晃动或碰撞时，电芯组300在容纳腔内发生晃动或相对移动的问题，提高了电芯组300固定在容纳腔内的稳定性，另外，由于结构胶具有较好的密封特性，采用底部结构胶600将电芯组300固定在第一容纳槽110的槽底，还实现了电池模组底部的密封效果，使得该电池模组整体具有较好的密封性。In one embodiment, as shown in FIG. 1 , the battery module also includes a bottom structural adhesive 600 . The battery pack 300 is fixed to the bottom of the first accommodation slot 110 through the bottom structural adhesive 600 to prevent the battery module from shaking or colliding. When the battery pack 300 is in the accommodation cavity, the problem of shaking or relative movement occurs, which improves the stability of the battery pack 300 being fixed in the accommodation cavity. In addition, because the structural adhesive has good sealing properties, the bottom structural adhesive 600 is used Fixing the battery pack 300 at the bottom of the first receiving slot 110 also achieves a sealing effect at the bottom of the battery module, so that the battery module as a whole has better sealing performance.
可选地，托盘100与顶盖200通过连接件连接，且连接件为螺纹配合的螺栓和螺母，螺栓螺母螺纹配合的连接方式较为简单，且连接可靠性较高，当然，在其他实施方案中，连接件也可以是卡扣等其他连接件。Optionally, the tray 100 and the top cover 200 are connected through connectors, and the connectors are threaded bolts and nuts. The threaded connection method of bolts and nuts is relatively simple and has high connection reliability. Of course, in other embodiments, , the connecting piece can also be a buckle or other connecting piece.
在一实施例中，连接件的数量为多个，多个连接件沿托盘100的周向均匀分布，提高托盘100与顶盖200连接可靠性的同时，还提高了其二者连接的均匀性。In one embodiment, the number of connectors is multiple, and the multiple connectors are evenly distributed along the circumferential direction of the tray 100, which not only improves the reliability of the connection between the tray 100 and the top cover 200, but also improves the uniformity of the connection between the two. .
可选地，如图1所示，电池模组还包括液冷板700，液冷板700设置于容纳腔内，液冷板700用于吸收电芯组300发出的热量，以达到为电芯组300降温的效果，降低电芯组300中的电芯发生热失控的几率，提高电池模组的安全性。Optionally, as shown in Figure 1, the battery module also includes a liquid cooling plate 700. The liquid cooling plate 700 is disposed in the accommodation cavity. The liquid cooling plate 700 is used to absorb the heat emitted by the battery core group 300 to achieve the purpose of maintaining the battery core. The cooling effect of the battery pack 300 reduces the probability of thermal runaway of the cells in the battery pack 300 and improves the safety of the battery module.
可选地，顶盖200设有第二容纳槽，第二容纳槽与第一容纳槽110配合形成容纳腔，以扩大容纳腔的容积，增加设置在容纳腔内电芯组300的体积，进而达到提高电池能量密度的效果。Optionally, the top cover 200 is provided with a second accommodating groove, and the second accommodating groove cooperates with the first accommodating groove 110 to form an accommodating cavity, so as to expand the volume of the accommodating cavity and increase the volume of the battery pack 300 disposed in the accommodating cavity, thereby To achieve the effect of improving battery energy density.
可选地，如图1所示，第一容纳槽110的槽底设有凸肋111，以提高托盘100底部的结构强度，进而达到提高托盘100承载能力和电池模组整体结构强度的效果。可选地，凸肋111的形状大致呈圆柱形、环形或不规则形状，此处凸肋111的具体形状根据实际情况而定即可。Optionally, as shown in FIG. 1 , the bottom of the first receiving groove 110 is provided with protruding ribs 111 to improve the structural strength of the bottom of the tray 100 , thereby improving the load-bearing capacity of the tray 100 and the overall structural strength of the battery module. Optionally, the shape of the protruding rib 111 is generally cylindrical, annular or irregular. The specific shape of the protruding rib 111 may be determined according to the actual situation.
在一实施例中，如图1所示，凸肋111的数量为多个，多个凸肋111均匀分布于第一容纳槽110的槽底，一方面提高托盘100底部的结构强度，另一方面提高托盘100底部结构强度的均匀性，进而使得托盘100的承载能力整体较为均匀，且电池模组整体的结构强度较为均匀。In one embodiment, as shown in FIG. 1 , the number of protruding ribs 111 is multiple, and the plurality of protruding ribs 111 are evenly distributed at the bottom of the first receiving groove 110 , which on the one hand improves the structural strength of the bottom of the tray 100 and on the other hand On the one hand, the uniformity of the structural strength of the bottom of the tray 100 is improved, thereby making the overall load-bearing capacity of the tray 100 more uniform, and the overall structural strength of the battery module more uniform.
本实施例提供的电池模组，电芯组300底部与第一容纳槽110的槽底之间通过底部结构胶600固定，CCS组件400与顶盖200之间通过顶部结构胶500固定，且CCS组件400的连接排410与支架420之间也通过顶部结构胶500固定，当电池模组发生晃动或碰撞时，电芯组300能够很好地固定在第一容纳槽110的槽底，并且CCS组件400的内部应力也较小；顶部结构胶500和底部结构胶600实现了电池模组的密封，省去了电池模组其余的密封结构；该电池模组省去了相关技术中的发泡胶，有效降低了电池模组的生产成本；若电芯组300中的电芯发生热失控现象，顶盖200能够阻挡电芯向上喷窜，进而降低了热扩散的几率，提高了电池模组的安全性。In the battery module provided by this embodiment, the bottom of the battery pack 300 and the bottom of the first receiving tank 110 are fixed by the bottom structural glue 600 , the CCS component 400 and the top cover 200 are fixed by the top structural glue 500 , and the CCS The connection row 410 of the component 400 and the bracket 420 are also fixed by the top structural glue 500. When the battery module shakes or collides, the battery pack 300 can be well fixed at the bottom of the first accommodation tank 110, and CCS The internal stress of the component 400 is also small; the top structural glue 500 and the bottom structural glue 600 realize the sealing of the battery module, eliminating the remaining sealing structure of the battery module; the battery module eliminates the need for foaming in related technologies glue, effectively reducing the production cost of the battery module; if the cells in the battery pack 300 undergo thermal runaway, the top cover 200 can prevent the cells from ejecting upward, thus reducing the probability of heat diffusion and improving the efficiency of the battery module. security.
本实施例还提供一种动力电池，该动力电池具有较高的安全性和运行稳定性。This embodiment also provides a power battery, which has high safety and operational stability.
可选地，该动力电池包括电池箱以及上述的电池模组，电池模组安装于电池箱内，当电芯发生热失控时，电池模组的顶盖200能够遮挡电芯，进而动力电池发生热扩散的几率较低，有效提高了动力电池的安全性；另外，该动力电池发生振动时，CCS组件400的内应力较小，因此对连接排410和支架420的连接稳定性和可靠性起到了很好的保障作用，有效提高了动力电池运行的稳定性。Optionally, the power battery includes a battery box and the above-mentioned battery module. The battery module is installed in the battery box. When the battery core undergoes thermal runaway, the top cover 200 of the battery module can block the battery core, thereby causing the power battery to fail. The probability of heat diffusion is low, which effectively improves the safety of the power battery; in addition, when the power battery vibrates, the internal stress of the CCS component 400 is small, which affects the connection stability and reliability of the connection row 410 and the bracket 420. It has a very good protective effect and effectively improves the stability of the power battery operation.

Claims (10)

  1. 电池模组，包括：Battery module, including:
    托盘(100)，所述托盘(100)设有第一容纳槽(110)；Tray (100), the tray (100) is provided with a first receiving slot (110);
    顶盖(200)，所述顶盖(200)与所述托盘(100)扣合连接，且所述顶盖(200)与所述第一容纳槽(110)形成容纳腔；Top cover (200), the top cover (200) is snap-fitted to the tray (100), and the top cover (200) and the first accommodation groove (110) form an accommodation cavity;
    电芯组(300)，所述电芯组(300)设置于所述容纳腔内；Battery core group (300), the battery core group (300) is arranged in the accommodation cavity;
    CCS组件(400)，所述CCS组件(400)包括连接排(410)和支架(420)，所述连接排(410)安装于所述支架(420)上，所述连接排(410)和所述支架(420)均位于所述电芯组(300)与所述顶盖(200)之间；CCS assembly (400). The CCS assembly (400) includes a connecting row (410) and a bracket (420). The connecting row (410) is installed on the bracket (420). The connecting row (410) and The brackets (420) are located between the battery pack (300) and the top cover (200);
    顶部结构胶(500)，所述连接排(410)、所述支架(420)以及所述顶盖(200)之间的间隙均通过所述顶部结构胶(500)填充。Top structural glue (500), the gaps between the connecting row (410), the bracket (420) and the top cover (200) are all filled with the top structural glue (500).
  2. 根据权利要求1所述的电池模组，还包括底部结构胶(600)，所述电芯组(300)通过所述底部结构胶(600)固定于所述第一容纳槽(110)的槽底。The battery module according to claim 1, further comprising a bottom structural glue (600), and the battery pack (300) is fixed to the groove of the first receiving groove (110) through the bottom structural glue (600). end.
  3. 根据权利要求1所述的电池模组，还包括液冷板(700)，所述液冷板(700)设置于所述容纳腔内，所述液冷板(700)用于吸收所述电芯组(300)发出的热量。The battery module according to claim 1, further comprising a liquid cooling plate (700), the liquid cooling plate (700) being disposed in the accommodation cavity, the liquid cooling plate (700) being used to absorb the electricity The heat emitted by the core set (300).
  4. 根据权利要求1所述的电池模组，其中，所述顶盖(200)设有第二容纳槽，所述第二容纳槽与所述第一容纳槽(110)配合形成所述容纳腔。The battery module according to claim 1, wherein the top cover (200) is provided with a second accommodation groove, and the second accommodation groove cooperates with the first accommodation groove (110) to form the accommodation cavity.
  5. 根据权利要求1-4任一项所述的电池模组，其中，所述托盘(100)与所述顶盖(200)通过连接件连接。The battery module according to any one of claims 1 to 4, wherein the tray (100) and the top cover (200) are connected through a connector.
  6. 根据权利要求5所述的电池模组，其中，所述连接件的数量为多个，多个所述连接件沿所述托盘(100)的周向均匀分布。The battery module according to claim 5, wherein the number of the connecting members is multiple, and the plurality of connecting members are evenly distributed along the circumferential direction of the tray (100).
  7. 根据权利要求5所述的电池模组，其中，所述连接件包括螺栓和螺母，所述螺栓与所述螺母螺纹配合。The battery module according to claim 5, wherein the connecting member includes a bolt and a nut, and the bolt is threadedly engaged with the nut.
  8. 根据权利要求1-4任一项所述的电池模组，其中，所述第一容纳槽(110)的槽底设有凸肋(111)。The battery module according to any one of claims 1 to 4, wherein the bottom of the first receiving groove (110) is provided with protruding ribs (111).
  9. 根据权利要求8所述的电池模组，其中，所述凸肋(111)的数量为多个，多个所述凸肋(111)均匀分布于所述第一容纳槽(110)的槽底。The battery module according to claim 8, wherein the number of the protruding ribs (111) is multiple, and the plurality of protruding ribs (111) are evenly distributed on the bottom of the first receiving groove (110). .
  10. 动力电池，包括电池箱以及如权利要求1-9任一项所述的电池模组，所述电池模组安装于所述电池箱内。A power battery includes a battery box and a battery module according to any one of claims 1 to 9, and the battery module is installed in the battery box.
PCT/CN2022/127543 2022-08-17 2022-10-26 Battery module and power battery WO2024036750A1 (en)

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Citations (6)

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CN111653701A (en) * 2020-04-28 2020-09-11 南京创源动力科技有限公司 Encapsulating type power battery system
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CN214688995U (en) * 2021-01-07 2021-11-12 比亚迪股份有限公司 Battery pack and vehicle
WO2021253976A1 (en) * 2020-06-19 2021-12-23 比亚迪股份有限公司 Vehicle and battery pack thereof
CN114284594A (en) * 2020-09-17 2022-04-05 比亚迪股份有限公司 Battery and battery pack
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CN111653701A (en) * 2020-04-28 2020-09-11 南京创源动力科技有限公司 Encapsulating type power battery system
WO2021253976A1 (en) * 2020-06-19 2021-12-23 比亚迪股份有限公司 Vehicle and battery pack thereof
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