WO2022193792A1 - Cadre de support et module de batterie - Google Patents

Cadre de support et module de batterie Download PDF

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Publication number
WO2022193792A1
WO2022193792A1 PCT/CN2021/143881 CN2021143881W WO2022193792A1 WO 2022193792 A1 WO2022193792 A1 WO 2022193792A1 CN 2021143881 W CN2021143881 W CN 2021143881W WO 2022193792 A1 WO2022193792 A1 WO 2022193792A1
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WO
WIPO (PCT)
Prior art keywords
partition
opening
support frame
frame
partition member
Prior art date
Application number
PCT/CN2021/143881
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English (en)
Chinese (zh)
Inventor
陈斌斌
王华文
席兵荣
花黄伟
Original Assignee
欣旺达电动汽车电池有限公司
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.)
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Publication date
Application filed by 欣旺达电动汽车电池有限公司 filed Critical 欣旺达电动汽车电池有限公司
Publication of WO2022193792A1 publication Critical patent/WO2022193792A1/fr

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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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of power batteries, and in particular, to a support frame and a battery module.
  • a battery module is formed by first stacking the single cells, then bonding the first and last single cells to the aluminum end plates, and then welding the side plates and the aluminum end plates.
  • the stacking of the battery modules is complicated and easy. Cumulative assembly errors.
  • the present application aims to solve at least one of the technical problems existing in the prior art.
  • the present application proposes a support frame, which can simplify the assembly process of the battery module and form airflow channels between adjacent single cells by arranging partition components in the opening frame at intervals, thereby improving the battery module's durability. Thermal performance.
  • the present application also proposes a battery module having the above-mentioned support frame.
  • the support frame according to the embodiment of the first aspect of the present application for accommodating a plurality of single cells, includes:
  • the opening frame is provided with a first opening and a second opening;
  • a partition assembly includes a first partition member and a second partition member, the first partition member and the second partition member are both fixedly connected to the opening frame, and the first partition member and the second partition member are fixedly connected to the opening frame.
  • a first channel is defined between the two separators, and a plurality of the separator assemblies are spaced apart along the first direction and used to separate the adjacent single cells;
  • first opening and the second opening are located on both sides of the first partition, and the airflow can enter the opening frame through the first opening, and after flowing in the first channel discharged through the second opening.
  • the one-piece housing according to the embodiment of the present application has at least the following beneficial effects: by arranging a plurality of partition components at intervals in the opening frame, the assembly process of the battery module can be simplified, the accumulated error of the battery stack can be reduced, and the battery module can be improved. In addition, the assembly accuracy can be improved, and an airflow channel can be formed between adjacent single cells, thereby improving the heat dissipation performance of the battery module.
  • the first partition is fixedly connected with the bottom member of the opening frame.
  • the second partition includes a first partition, a second partition and a third partition, the first partition and the second partition are oppositely disposed, and the third partition A partition connects the first partition and the second partition.
  • an elastic component is further included, the elastic component is disposed on the second partition, and along the first direction, the elastic component protrudes from the second partition, and the elastic component extends out of the second partition.
  • the assembly is used to abut the unit cells.
  • the elastic component includes a first abutting portion and a second abutting portion, the first abutting portion and the second abutting portion are disposed opposite to each other and have a gap, and the first abutting portion and the second abutting portion are opposite to each other and have a gap.
  • the abutting portion and the second abutting portion can approach each other under the action of the expansion of the unit cell.
  • connection between the second partition and the opening frame is connected by an arc transition.
  • the outer edge of the first partition is at least partially arcuate.
  • the plurality of the opening frames are arranged along a second direction, wherein the first direction is the length direction of the support frame, and the second direction is all the the width direction of the support frame.
  • the partition assemblies there are multiple rows of the partition assemblies, and the multiple rows of the partition assemblies are arranged at intervals along a second direction, and the second direction is the width direction of the support frame.
  • the battery module according to the embodiment of the second aspect of the present application includes a plurality of single cells and the support frame of the embodiment of the first aspect.
  • FIG. 1 is an expanded schematic diagram of a battery module according to an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of a support frame and a side mounting plate according to an embodiment of the application;
  • Fig. 3 is the bottom view of Fig. 2;
  • Figures 4 to 6 show cross-sectional views of different embodiments of section A-A in Figure 3;
  • Fig. 7 is a partial cross-sectional view of the B-B section in Fig. 3;
  • Support frame 100 opening frame 110 , first side member 111 , second side member 112 , bottom member 113 , first opening 1131 , second opening 1132 , first partition 120 , second partition 130 , first partition 131, the second partition part 132, the third partition part 133, the first channel 140, the elastic component 150, the first abutting part 151, the second abutting part 152, the through hole 160;
  • a single battery 200 an upper cover 300, a side mounting plate 400, a first mounting portion 410, and a second mounting portion 420;
  • orientation or positional relationship indicated in relation to orientation description is based on the orientation or positional relationship shown in the accompanying drawings, only For the convenience of describing the present application and simplifying the description, it is not indicated or implied that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application.
  • the meaning of several is more than one, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including this number, above, below, within, etc. are understood as including this number. If it is described that the first and the second are only for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance, or indicating the number of the indicated technical features or the order of the indicated technical features. relation.
  • references to the terms “one embodiment,” “some embodiments,” “exemplary embodiment,” “example,” “specific example,” or “some examples”, etc., are meant to incorporate the embodiments
  • a particular feature, structure, material, or characteristic described or exemplified is included in at least one embodiment or example of the present application.
  • schematic representations of the above terms do not necessarily refer to the same embodiment or example.
  • the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
  • the support frame 100 is used for accommodating a plurality of single cells 200, and includes an opening frame 110 and a partition assembly.
  • the opening frame 110 is provided with a first opening 1131 and a second opening 1132, and the partition assembly includes a first partition member 120 and a second partition member. 130.
  • Both the first partition member 120 and the second partition member 130 are fixedly connected with the opening frame 110, the first partition member 120 and the second partition member 130 define a first channel 140, and a plurality of partition components are arranged at intervals along the first direction and For separating adjacent single cells, the first opening 1131 and the second opening 1132 are located on both sides of the first separator 120 , and the airflow can enter the opening frame 110 through the first opening 1131 and flow in the first channel 140 Then, it is discharged through the second opening 1132 .
  • the opening frame 110 includes a bottom member 113 , two oppositely disposed first side members 111 and two oppositely disposed second side members 112 , the first side members 111 are along the X direction Extending, the second side member 112 extends along the Y direction, wherein the X direction is the stacking direction (ie, the first direction) of the single cells 200 , which is also the length direction of the support frame 100 , and the Y direction is the width direction of the support frame 100 .
  • the X direction is the stacking direction (ie, the first direction) of the single cells 200 , which is also the length direction of the support frame 100
  • the Y direction is the width direction of the support frame 100 .
  • the partition assembly includes a first partition 120 and a second partition 130 , the first partition 120 is fixedly connected to the bottom member 113 , the second partition 130 is fixedly connected to the first side member 111 , and the first partition There is a distance between the part 120 and the second partition part 130 , that is, a first channel 140 is formed between the first partition part 120 and the second partition part 130 .
  • the plurality of separation assemblies are arranged at intervals along the first direction, and the separation assemblies divide the opening frame 110 into a plurality of subspaces, and the single cells are placed in the subspaces, so that the support frame 100 can accommodate (or support) a plurality of single cells. Adjacent single cells are separated by separation components, so that the adjacent single cells are not in direct contact.
  • the bottom member 113 is provided with a first opening 1131 and a second opening 1132 , and the first opening 1131 and the second opening 1132 are located on both sides of each of the first partitions 120 in the Y direction.
  • the specific structure of the first opening 1131 and the second opening 1132 can be an integrated opening structure, that is, the bottom member 113 has only one first opening 1131 and one second opening 1132, the first opening 1131 is a long strip opening, and all the Both sides of the first partition 120 have a first opening 1131 and a second opening 1132 .
  • first openings 1131 and the second openings 1132 may be a plurality of openings distributed at intervals, and the number of the first openings 1131 and the number of the second openings 1132 are the same as the number of the first partitions 120, so that each Both sides of the first partition 120 have a first opening 1131 and a second opening 1132 .
  • the first divider 120 and the second divider 130 in each divider assembly define a first channel 140 with a set interval between the first divider 120 and the second divider 130 .
  • the air can contact the surfaces of the two adjacent single cells 200, and exchange heat with the single cells 200, thereby taking away the heat of the single cells 200, which is harmful to the single cells 200.
  • 200 cool down.
  • the first separator 120 , the second separator 130 and the opening frame 110 work together to fix the single cell 200 in the subspace of the opening frame 110 .
  • the single cell 200 can be fixed more firmly , effectively preventing the single battery 200 from shaking in the battery module.
  • This embodiment shows the structure of the support frame 100 that the first partition 120 is fixedly connected to the bottom member 113 .
  • the structure of the support frame 100 may be such that the first partition 120 is fixedly connected to a first side member 111 , and the corresponding first opening 1131 and the second opening 1132 are also provided in the first side member 111 superior.
  • the assembly process of the battery module can be simplified, and the single cells can be directly placed in the subspace of the opening frame 110, which can reduce the stacking process of the single cells 200.
  • the accumulative error in the battery module can be improved, thereby improving the assembly accuracy of the battery module.
  • an airflow channel can be formed between the adjacent single cells 200, thereby improving the heat dissipation performance of the battery module.
  • the second partition 130 includes a first partition 131 , a second partition 132 and a third partition 133 , the first partition 131 and the second partition 132 are disposed opposite to each other, and the third partition The partition part 133 connects the first partition part 131 and the second partition part 132 .
  • the second partition 130 has a door frame structure as a whole, the first partition 131 and the second partition 132 are disposed opposite to each other, one end of the third partition 133 is fixedly connected to the end of the first partition 131, and the third partition The other end of the part 133 is fixedly connected with the end of the second partition part 132 , the first partition part 120 is placed inside the door frame, and has a space between the first partition part 131 , the second partition part 132 and the third partition part 133 . a certain distance.
  • the first partition 131 of the second partition 130 is fixedly connected to a first side member 111, and the second partition 132 of the second partition 130 is connected to another first side member 111.
  • the side member 111 is fixedly connected, and the third partition portion 133 of the second partition member 130 is flush with the top of the opening frame 110 .
  • the first partition 120 is fixedly connected with the first side member 111
  • the first partition 131 of the second partition 130 is fixedly connected with the bottom member 113
  • the third partition 133 of the second partition 130 is connected with another first partition 130 .
  • the side members 111 are fixedly connected, and the second partition 132 of the second partition 130 is flush with the top of the opening frame 110 .
  • the second separator 130 is a door frame type structure with three partitions.
  • the second partition 130 only includes the first partition 131 and the second partition
  • the partition 132, the first partition 131 and the second partition 132 are arranged opposite to each other, the first partition 131 is fixedly connected to a first side member 111, the second partition 132 is fixedly connected to the other first side member 111,
  • the one side member 111 and the two adjacent first partitions 131 thereon form a clip slot for clipping one side of the unit cell 200 , and the other first side member 111 is adjacent to the two first partitions thereon.
  • 131 forms a snap slot for snapping the other side of the single battery 200, so as to realize the fixing of the single battery 200.
  • an elastic component 150 is further included.
  • the elastic component 150 is disposed on the second partition member 130. Along the first direction, the elastic component 150 protrudes from the second partition member 130, and the elastic component 150 is used for resisting the second partition member 130. Connect to the single battery 200 .
  • the elastic component 150 is disposed on the second separator 130 .
  • the elastic component 150 moves toward the second separator 130 . Both sides of the 130 are protruded for abutting against the unit cells 200 .
  • the single battery 200 will be thermally expanded during the charging and discharging process, in order to ensure the working performance of the single battery 200 and avoid the occurrence of thermal runaway due to no expansion space, along the X direction, two adjacent second partitions
  • the spacing between the parts 130 is slightly larger than the thickness of the single cell 200 in the X direction, so as to provide a certain expansion space for the single cell 200, but since the spacing between two adjacent second separators 130 is larger than that of the single cell Due to the thickness of 200 , the single cell 200 may shake.
  • the elastic component 150 is provided on the second separator 130 . When the single battery 200 is not expanded, the elastic member 150 abuts the single battery 200, thereby fixing the single battery 200.
  • the single cell 200 When the single cell 200 expands, the single cell 200 exerts a force on the elastic member 150 to elastically deform the elastic member 150 , so that the single cell 200 can abut against the second separator 130 .
  • a certain expansion space can be provided for the unit cell 200, and the stability of the unit cell 200 can also be ensured.
  • the elastic component 150 includes a first abutment portion 151 and a second abutment portion 152 , and the first abutment portion 151 and the second abutment portion 152 are disposed opposite to each other and have a gap , along the stacking direction of the unit cells 200 (ie, along the X direction), the first abutting portion 151 and the second abutting portion 152 protrude from the second separator 130 , when the unit battery 200 does not expand, the unit There is a certain gap between the battery and the second separator 130 , and the two adjacent single cells 200 are in contact with the first abutting portion 151 and the second abutting portion 152 respectively.
  • the two adjacent single cells 200 press the first abutting part 151 and the second abutting part 152 respectively, and the first abutting part 151 and the second abutting part 152 are elastically deformed, that is, they are close to each other in the X direction. , so that the single battery 200 can be abutted with the second separator 130, and by providing the elastic component, the single battery 200 can avoid shaking due to the gap in the state of low temperature, and can have expansion space in the state of high temperature . As shown in FIG. 4 to FIG.
  • an elastic component 150 is provided at the lower ends of the first partition part 131 and the second partition part 132 , and the lower part of the third partition part 133 is arranged There are two spaced apart elastic members 150 .
  • the elastic components 150 on the first partition part 131 and the second partition part 132 can also extend along the Y direction, that is, the elastic components 150 on the first partition part 131 extend out of the first partition part 131 and face the second partition part 131
  • the partition portion 132 extends, and the elastic component 150 on the second partition portion 132 protrudes out of the second partition portion 132 and extends toward the first partition portion 131 .
  • the number of the elastic components 150 on the second separator 130 can be set according to the size of the single battery 200 .
  • connection between the second partition 130 and the opening frame 110 is connected by a circular arc transition.
  • FIG. 2 shows that the first partition 131 of the second partition 130 is fixedly connected to the first side member 111 on one side, and the connection between the first partition 131 and the first measuring member 111 is provided with rounded corners , that is, the two transition through an arc.
  • the second partition portion 132 is fixedly connected to the first side member 111 on the other side, and the connection between the second partition portion 132 and the first side member 111 on the same side is provided with a rounded corner, that is, the two transition through a circular arc .
  • the accommodating cavity formed between the first side member 111 , the bottom member 113 and the second separator 130 can better match the shape of the single cell 200 , and also avoid stress concentration on the opening frame 110 .
  • the structural strength of the opening frame 110 is improved, thereby improving the safety of the battery module.
  • the outer edge of the first partition 120 is at least partially arc-shaped.
  • the outer edge of the first partition 120 in the YZ plane, has an arc-shaped structure as a whole, and the air flows in through one of the first opening 1131 and the second opening 1132 , along the first partition 120 .
  • the outer edge of the air flows, and then flows out through the first opening 1131 and the second opening 1132, so that the air path is U-shaped. It can be understood that, in other embodiments, as shown in FIG.
  • the outer edge of the first partition 120 is fan-shaped, and the air flows in through one of the first opening 1131 and the second opening 1132 , along the The outer edge of a partition 120 flows, and then flows out through the first opening 1131 and the second opening 1132, and the air path is also substantially U-shaped.
  • the outer edge of the first partition 120 in the YZ plane, is composed of a square part (which is a square or a rectangle) and an arc part, and the air along the first partition 120 The edges flow through and the air path is U-shaped.
  • the resistance of the air flow can be reduced, thereby increasing the speed of the air flow, thereby improving the cooling effect.
  • the first separator 120 when the first separator 120 is fixedly installed on the bottom member 113, the height of the first separator 120 along the Z direction does not exceed half of the height of the single cell 200 along the Z direction;
  • the length of the first separator 120 along the Y direction does not exceed half of the length of the single cell 200 along the Y direction.
  • the central region of the single cell 200 swells the most, and air can flow through the central region of the single cell 200 , so that the middle of the single cell 200 can also be cooled, thereby improving the battery performance.
  • the cooling performance of the module is not limited to:
  • the multiple opening frames 110 there are multiple opening frames 110 , and the multiple opening frames 110 are arranged along the second direction, wherein the first direction is the length direction of the support frame 100 , and the second direction is the width direction of the support frame 100 . .
  • the support frame 100 shown in FIG. 1 can only accommodate one column of single cells stacked along the X direction (ie, the length direction of the support frame).
  • the illustrated opening frames 110 are arranged along the width direction of the support frame 100 (ie, the Y direction shown in FIG. 1 ), and a plurality of opening frames 110 form an integrated opening frame.
  • partition components a first partition member 120 and a second partition member 130
  • the first partition 120 in each opening frame 110 is fixedly connected with the bottom member 113 of the opening frame 110
  • the second partition 130 in each opening frame 110 is fixedly connected with the first side member 111 of the opening frame 110 ,
  • an integrated support frame 100 is formed.
  • Each opening frame 110 can accommodate a row of single cells. When the support frame 100 is filled with the single cells 200, the single cells 200 are distributed in a rectangular array in the support frame 100.
  • the first partition components are in multiple rows, and the multiple rows of first partition components are arranged at intervals along a second direction, and the second direction is the width direction of the support frame.
  • the support frame has an opening frame 110 in which multiple rows of partition assemblies are arranged, and the multiple rows of partition assemblies are arranged at intervals along the width direction of the support frame 100 (ie, the Y direction shown in FIG. 1 ).
  • the number of columns of the partition assembly can be 2, the first partitions 120 in the 2-column partition can be simultaneously disposed on the bottom member 113 of the opening frame 110, and the first partition 120 in the 2-column can also be one row
  • the first spacer 120 is disposed on one first side member 111 , and another row of first spacers 120 is disposed on the other first side member 111 .
  • the above-mentioned support frame 100 with 2-column separation components can be used to place 2-column single cells (the 2-column single cells are distributed along the width direction of the support frame 100 ), and the first separator 120 and the second separator 130 in the separation module Both are used to separate adjacent single cells in each column of single cells. It can be understood that, the separation components may also have more than 3 columns.
  • the first partitions 120 in the partition assemblies of three or more rows may be disposed on the bottom member 113 of the opening frame 110 at the same time, or may be two rows of partition assemblies on both sides in the width direction
  • the first partitions 120 in the partition assemblies are respectively arranged on the first side members 111 of the corresponding sides, and the first partitions 120 in the partition assemblies of the remaining columns are all arranged on the bottom member 113 of the opening frame 110 .
  • the above-mentioned support frame 100 with more than 3 rows of separator assemblies can be used to place more than 3 rows of single cells, and the first separator 120 and the second separator 130 in each row of separator assemblies are used to separate the phases in each row of single cells. adjacent single cell.
  • the battery module of the embodiment of the second aspect of the present application includes a plurality of single cells and the support frame 100 of the embodiment of the first aspect.
  • the separator assembly (the first separator 120 and the second separator 130 ) divides the opening frame 110 into a plurality of subspaces, and the single cells are placed in the subspaces of the opening frame 110 , thereby completing the assembly of the battery module.
  • the battery module of the present application can reduce stacking errors and improve the assembly accuracy of the battery module.
  • the first channel 140 is formed between the first separator 120 and the second separator 130 , there is a gap between the single cell and the support frame, and the airflow can flow in the gap (ie, the first channel 140 ), thereby improving the Thermal performance of the battery module.
  • a side mounting plate 400 is provided on the outer sides of the two first side members 111 .
  • 400 has an L-shaped structure and has a first mounting portion 410 and a second mounting portion 420.
  • the first mounting portion 410 is fixedly connected with the first side member 111
  • the second mounting portion 420 is used for fixedly connecting with the battery pack case.
  • the first side member 111 is provided with a through hole 160 , and the first side member 111 and the side mounting plate 400 are fixed by gluing.
  • the first side member 111 is provided with a plurality of through holes 160, and the number of the through holes 160 on each side of the first side member 111 is the same as the number of the single cells 200.
  • the battery 200 is placed in the subspace in the support frame 100, and then glue is applied to the first side member 111, and then the side mounting plate 400 is placed on the outside of the first side member 111.
  • the side member 111 and the side mounting plate 400 are fixedly connected. Through the above arrangement, the unit cells 200 are fixedly connected to the support frame 100 , and the unit cells are not easily shaken relative to the support frame 100 .

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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

La présente demande concerne un cadre de support et un module de batterie. Le cadre de support est utilisé pour recevoir une pluralité de batteries individuelles et comprend un cadre d'ouverture et des ensembles de séparation, une première ouverture et une seconde ouverture étant ménagées dans le cadre d'ouverture, les ensembles de séparation comprenant un premier élément de séparation et un second élément de séparation, le premier élément de séparation et le second élément de séparation étant tous deux reliés de manière fixe au cadre d'ouverture, un premier canal étant formé entre le premier élément de séparation et le second élément de séparation, les ensembles de séparation multiples étant disposés à intervalles dans une première direction et utilisés pour séparer les batteries individuelles adjacentes, la première ouverture et la seconde ouverture étant situées sur deux côtés du premier élément de séparation, et un flux d'air pouvant pénétrer dans le cadre d'ouverture par la première ouverture, s'écouler dans le premier canal et être ensuite évacué par la seconde ouverture. Le cadre de support de la présente demande peut recevoir la pluralité de batteries individuelles de manière à former le module de batterie, de telle sorte que la précision d'assemblage et les performances de dissipation de chaleur du module de batterie peuvent être améliorées.
PCT/CN2021/143881 2021-03-18 2021-12-31 Cadre de support et module de batterie WO2022193792A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202120560947 2021-03-18
CN202120560947.3 2021-03-18
CN202110619907.6A CN113540638A (zh) 2021-03-18 2021-06-03 支撑架和电池模组
CN202110619907.6 2021-06-03

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WO2022193792A1 true WO2022193792A1 (fr) 2022-09-22

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WO (1) WO2022193792A1 (fr)

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CN113540635A (zh) * 2021-03-18 2021-10-22 欣旺达电动汽车电池有限公司 围框、围框组件及电池包
WO2023187812A1 (fr) * 2022-03-27 2023-10-05 Tvs Motor Company Limited Bloc-batterie
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