CN219610626U - Bottom plate support and cylindrical battery module - Google Patents

Bottom plate support and cylindrical battery module Download PDF

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Publication number
CN219610626U
CN219610626U CN202320636623.2U CN202320636623U CN219610626U CN 219610626 U CN219610626 U CN 219610626U CN 202320636623 U CN202320636623 U CN 202320636623U CN 219610626 U CN219610626 U CN 219610626U
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China
Prior art keywords
bottom plate
battery cell
elastic
bracket
cylindrical battery
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CN202320636623.2U
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Chinese (zh)
Inventor
吴韬
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Shenzhen Exxon New Energy Technology Co ltd
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Shenzhen Exxon New Energy Technology Co ltd
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    • 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

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  • Battery Mounting, Suspending (AREA)

Abstract

The utility model provides a bottom plate bracket and a cylindrical battery module. The bottom plate support is used for being detachably connected with the top cover support, a bottom accommodating cavity is formed in the bottom plate support, and the bottom plate support comprises an elastic part; the bottom plate support is also provided with a plurality of battery core placing grooves which are distributed at intervals, and each battery core placing groove is connected with the bottom accommodating cavity and is used for placing a corresponding cylindrical battery core; the number of the elastic parts is multiple, each elastic part is positioned in the corresponding battery cell placing groove and connected with the bottom plate bracket, the elastic parts are arranged in one-to-one correspondence with the battery cell placing grooves, and each elastic part is used for being elastically connected with the corresponding cylindrical battery cell. The bottom plate support has good fixing performance on each cylindrical battery cell.

Description

Bottom plate support and cylindrical battery module
Technical Field
The utility model relates to the technical field of cylindrical battery modules, in particular to a bottom plate bracket and a cylindrical battery module.
Background
The cylindrical battery module is a basic energy storage unit of an energy storage system. The cylindrical battery module is widely applied to the fields of base station energy, power grid energy storage, electric automobiles, new energy automobiles, electric bicycles, mobile power supplies and the like. The cylindrical battery module consists of a top cover support, a bottom plate support, a plurality of cylindrical battery cells and the like, wherein the top cover support is connected with the bottom plate support to form a battery cell placing cavity, the plurality of cylindrical battery cells are distributed in the battery cell placing cavity at intervals, and each cylindrical battery cell is connected with the top cover support and the bottom plate support respectively.
In prior art, the cylinder battery module still includes a plurality of long bolts, the coupling bolt, the top cap support is the battery frame that is in the top promptly is formed with first cavity and a plurality of first connecting hole, every first connecting hole and first cavity intercommunication, a plurality of first connecting holes encircle the periphery interval setting of top cap support, the bottom plate support is the battery frame that is in the bottom promptly and is formed with second cavity and a plurality of second connecting holes, every second connecting hole and second cavity intercommunication, a plurality of second connecting holes encircle the periphery interval setting of bottom plate support, first cavity and second cavity are linked together in order to form the electric core and place the chamber, a plurality of cylinder electric cores are single battery package interval distribution in electric core place the intracavity, every cylinder electric core is connected with top cap support and bottom plate support respectively, every cylinder electric core is used for with the connection piece welding, every long bolt wears to locate first connecting hole, electric core place chamber and second connecting hole, the one end and top cap support butt of every long bolt, the other end and bottom plate support bolted connection of every long bolt, thereby make a plurality of long bolts fix top cap support and the position of bottom plate support make a position common effect of each cylinder support and the position of electric core. For example, a conventional cylindrical battery module, such as the one disclosed in the chinese patent No. cn2016621242047. X, is proposed as a power battery module, wherein four corners of a battery frame of the power battery module are provided with coupling holes, and each coupling bolt passes through the coupling hole to fix each battery frame in series, so as to facilitate replacement of a single battery pack.
However, the top cap support is connected with the top of each cylinder electric core, and the bottom plate support is connected with the bottom of each cylinder electric core, and there is the difference in height in the bottom of each cylinder electric core for the area of contact between the bottom of each cylinder electric core and the bottom plate support is less, thereby makes each cylinder electric core more easily take place to rock in electric core placement cavity, thereby makes the welding part between each cylinder electric core and the connection piece more easily fracture, and then makes the bottom plate support relatively poor to the fixed performance of each cylinder electric core.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a bottom plate bracket with good fixing performance for each cylindrical battery cell and a cylindrical battery module.
The aim of the utility model is realized by the following technical scheme:
a bottom plate bracket for detachable connection with a top cover bracket, the bottom plate bracket being formed with a bottom receiving cavity, the bottom plate bracket including an elastic portion;
the bottom plate support is also provided with a plurality of battery cell placing grooves, the battery cell placing grooves are distributed at intervals, and each battery cell placing groove is connected with the bottom accommodating cavity and is used for placing a corresponding cylindrical battery cell;
the number of the elastic parts is multiple, each elastic part is positioned in the corresponding battery cell placing groove and connected with the bottom plate support, the elastic parts are arranged in one-to-one correspondence with the battery cell placing grooves, and each elastic part is used for being elastically connected with the corresponding cylindrical battery cell.
In one embodiment, the floor support is an integrally formed structure.
In one embodiment, the bottom plate bracket is further formed with a plurality of heat dissipation holes, each of which is communicated with the bottom accommodating cavity, and the plurality of heat dissipation holes are arranged around the peripheral wall of the bottom plate bracket at intervals.
In one embodiment, each of the heat dissipation holes has an elliptical or rectangular or parallelogram cross section.
In one embodiment, each elastic portion includes a first elastic body and a second elastic body, the first elastic body and the second elastic body are arranged at intervals, the first elastic body and the second elastic body are connected with the inner wall of the cell placement groove, and the first elastic body and the second elastic body are respectively used for being elastically abutted to the cylindrical cell.
In one embodiment, each of the first elastic bodies and each of the second elastic bodies is a rubber structure.
In one embodiment, each of the elastic parts has a circular arc arch bridge shape in cross section.
In one embodiment, the bottom plate support is further formed with a plurality of bayonet holes, each bayonet hole is communicated with the bottom accommodating cavity, the bayonet holes are arranged around the peripheral wall of the bottom plate support at intervals, and each bayonet hole is used for being penetrated by a bayonet part of the corresponding top cover support so that the bottom plate support is used for being clamped with the top cover support.
In one embodiment, each of the elastic parts is bonded to the floor bracket.
The cylindrical battery module comprises a top cover support, a plurality of cylindrical battery cells and the bottom plate support in any embodiment, wherein the top cover support is provided with a plurality of clamping openings, the clamping openings are arranged at intervals around the peripheral wall of the top cover support, each clamping opening penetrates through a corresponding clamping opening hole so as to enable the bottom plate support to be clamped with the top cover support, and the clamping openings are arranged in one-to-one correspondence with the clamping openings; each cell placement groove is connected with the bottom accommodating cavity and is used for placing a corresponding cylindrical cell; each elastic part is elastically connected with the corresponding cylindrical battery cell, and the elastic parts, the battery cell placing grooves and the cylindrical battery cells are arranged in one-to-one correspondence.
Compared with the prior art, the utility model has at least the following advantages:
because each electric core standing groove is connected with the bottom holding cavity and is commonly used for placing corresponding cylindrical electric cores, the bottom wall of the electric core standing groove is used for being connected with the bottom end of the corresponding cylindrical electric core, each elastic part is used for being elastically connected with the bottom wall of the corresponding electric core standing groove, each elastic part is used for being elastically connected with the bottom end of the corresponding cylindrical electric core, each elastic part is elastically deformed, each elastic part is matched with the bottom end of the corresponding cylindrical electric core, the problem that the contact area between the bottom end of each cylindrical electric core and the bottom plate bracket is small due to the fact that the height difference exists at the bottom end of each cylindrical electric core is solved, and therefore the contact force between the bottom end of each cylindrical electric core and the corresponding elastic part is large, the problem that each cylindrical electric core is easy to shake in the electric core standing groove is avoided, the welding part between each cylindrical electric core and the connecting piece is difficult to fracture, and the fixing performance of the bottom plate bracket to each cylindrical electric core is good is further achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a cylindrical battery module according to an embodiment;
fig. 2 is an enlarged schematic view of a portion a of the cylindrical battery module shown in fig. 1;
fig. 3 is a schematic structural view of a bottom plate holder of the cylindrical battery module shown in fig. 1;
FIG. 4 is a cross-sectional view taken along line B-B of the floor bracket shown in FIG. 3;
FIG. 5 is an enlarged schematic view of the floor bracket shown in FIG. 4 at C;
fig. 6 is a schematic structural view of the bottom plate holder of the cylindrical battery module shown in fig. 1 at another view angle.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The utility model provides a bottom plate support, which is used for being detachably connected with a top cover support, wherein the bottom plate support is provided with a bottom accommodating cavity, and comprises an elastic part; the bottom plate support is also provided with a plurality of battery core placing grooves which are distributed at intervals, and each battery core placing groove is connected with the bottom accommodating cavity and is used for placing a corresponding cylindrical battery core; the number of the elastic parts is multiple, each elastic part is positioned in the corresponding battery cell placing groove and connected with the bottom plate bracket, the elastic parts are arranged in one-to-one correspondence with the battery cell placing grooves, and each elastic part is used for being elastically connected with the corresponding cylindrical battery cell.
The bottom plate support is characterized in that each cell placing groove is connected with the bottom containing cavity and is used for placing the corresponding cylindrical cell, so that the bottom wall of the cell placing groove is used for being connected with the bottom end of the corresponding cylindrical cell, each elastic part is used for being elastically connected with the bottom wall of the corresponding cell placing groove, each elastic part is used for being elastically connected with the bottom end of the corresponding cylindrical cell, each elastic part is elastically deformed, the bottom ends of each elastic part and the corresponding cylindrical cell are matched, the problem that the contact area between the bottom end of each cylindrical cell and the bottom plate support is small due to the fact that the bottom end of each cylindrical cell is high is solved, the contact force between the bottom end of each cylindrical cell and the corresponding elastic part is large, the problem that each cylindrical cell is easy to shake in the cell placing groove is avoided, the welding position between each cylindrical cell and the connecting piece is difficult to fracture, and the bottom plate support is good in fixing performance of each cylindrical cell is achieved.
In order to better understand the technical scheme and beneficial effects of the present utility model, the following describes the present utility model in further detail with reference to specific embodiments:
as shown in fig. 1 to 6, the bottom chassis 300 of an embodiment is for detachable connection with the top cover chassis 100, the bottom chassis 300 is formed with a bottom receiving cavity 311, and the bottom chassis 300 includes an elastic part 320; the bottom plate bracket 300 is further formed with a plurality of battery cell placing grooves 313, the plurality of battery cell placing grooves 313 are distributed at intervals, and each battery cell placing groove 313 is connected with the bottom accommodating cavity 311 and is used for placing a corresponding cylindrical battery cell 200; the number of the elastic parts 320 is multiple, each elastic part 320 is located in the corresponding cell placement groove 313 and connected with the bottom plate bracket 300, the elastic parts 320 are arranged in a one-to-one correspondence with the cell placement grooves 313, and each elastic part 320 is used for being elastically connected with the corresponding cylindrical cell 200.
In this embodiment, each cell placement groove 313 is connected to the bottom receiving cavity 311 for placing a corresponding cylindrical cell 200, such that the bottom wall of the cell placement groove 313 is used to connect with the bottom end of the corresponding cylindrical cell 200. Each elastic portion 320 is located in a corresponding cell placement groove 313 and is connected to the bottom plate holder 300, i.e., each elastic portion 320 is connected to the bottom wall of the corresponding cell placement groove 313.
In the above-mentioned bottom plate support 300, since each cell placement groove 313 is connected with the bottom accommodating cavity 311 and is generally used for placing the corresponding cylindrical cell 200, so that the bottom wall of the cell placement groove 313 is used for being connected with the bottom end of the corresponding cylindrical cell 200, each elastic portion 320 is used for being elastically connected with the corresponding cylindrical cell 200, each elastic portion 320 is connected with the bottom wall of the corresponding cell placement groove 313, each elastic portion 320 is used for being elastically connected with the bottom end of the corresponding cylindrical cell 200, each elastic portion 320 is elastically deformed, and thus each elastic portion 320 is matched with the bottom end of the corresponding cylindrical cell 200, the problem that the contact area between the bottom end of each cylindrical cell 200 and the bottom plate support 300 is small due to the height difference of the bottom end of each cylindrical cell 200 is solved, so that the contact force between the bottom end of each cylindrical cell 200 and the corresponding elastic portion 320 is large, and the problem that each cylindrical cell 200 is easy to shake in the cell placement groove 313 is avoided, and the bottom plate support 300 is difficult to be welded to each cylindrical cell 200.
In one embodiment, the bottom bracket 300 is integrally formed, so that the bottom bracket 300 is compact, and the bottom bracket 300 has high structural strength.
As shown in fig. 4, in one embodiment, the bottom bracket 300 is further formed with a plurality of heat dissipation holes 314, each heat dissipation hole 314 is communicated with the bottom receiving cavity 311, and the plurality of heat dissipation holes 314 are arranged around the peripheral wall of the bottom bracket 300 at intervals, so that heat generated between two adjacent cylindrical battery cells 200 is discharged to the outside through the plurality of heat dissipation holes 314, and the heat dissipation performance of the bottom bracket 300 is better, so that the heat dissipation performance of the cylindrical battery module 10 is better. Further, each of the heat dissipation holes 314 has an elliptical or rectangular or parallelogram shape in cross section.
As shown in fig. 1 to 5, in one embodiment, each elastic portion 320 includes a first elastic body 321 and a second elastic body 322, where the first elastic body 321 and the second elastic body 322 are disposed at intervals, each of the first elastic body 321 and the second elastic body 322 is connected with an inner wall of the battery cell placement groove 313, and each of the first elastic body 321 and the second elastic body 322 is elastically abutted against the cylindrical battery cell 200, so that each of the first elastic body 321 and the second elastic body 322 is tightly attached to a bottom end of the cylindrical battery cell 200, so that a contact area between the bottom end of the cylindrical battery cell 200 and the corresponding elastic portion 320 is larger, and a contact force between the bottom end of the cylindrical battery cell 200 and the corresponding elastic portion 320 is larger, so that the fixing performance of the elastic portion 320 to the corresponding cylindrical battery cell 200 is better, and the fixing performance of the base plate bracket 300 to each of the cylindrical battery cells 200 is better.
Further, in one embodiment, each of the first elastic bodies 321 and each of the second elastic bodies 322 are rubber structures, so that each of the first elastic bodies 321 and each of the second elastic bodies 322 has better elasticity.
Further, in one embodiment, the cross section of each elastic portion 320 is in a shape of arc arch bridge, so that the elastic portion 320 is easy to elastically deform when being abutted against the corresponding cylindrical battery cell 200, so that the connection convenience between the elastic portion 320 and the corresponding cylindrical battery cell 200 is better, and the connection convenience between the bottom plate bracket 300 and the cylindrical battery cell 200 is better.
As shown in fig. 4, in one embodiment, the bottom bracket 300 is further formed with a plurality of bayonet holes 312, each bayonet hole 312 communicates with the bottom accommodating cavity 311, the plurality of bayonet holes 312 are disposed around the peripheral wall of the bottom bracket 300 at intervals, each bayonet hole 312 is used to be penetrated by the corresponding bayonet part 110 of the top cover bracket 100, so that the bottom bracket 300 is used to be clamped with the top cover bracket 100, so that the bottom bracket 300 is used to be detachably connected with the top cover bracket 100, and thus, the connection convenience between the bottom bracket 300 and the top cover bracket 100 is better.
Further, in the present embodiment, the cross section of each bayonet hole 312 is rectangular or circular or triangular or trapezoidal or parallelogram.
As shown in fig. 1 to 5, in one embodiment, each elastic part 320 is adhered to the bottom plate holder 300, so that the connection strength between the elastic part 320 and the bottom plate holder 300 is high, thereby enhancing the structural strength between the elastic part 320 and the bottom plate holder 300, and further improving the structural stability of the cylindrical battery module 10.
As shown in fig. 1 to 6, the present utility model further provides a cylindrical battery module 10, which includes a top cover bracket 100, a plurality of cylindrical battery cells 200, and a bottom plate bracket 300 according to any of the foregoing embodiments, wherein the top cover bracket 100 is provided with a plurality of bayonet portions 110, the plurality of bayonet portions 110 are disposed around a peripheral wall of the top cover bracket 100 at intervals, each bayonet portion 110 is disposed through a corresponding bayonet hole 312, so that the bottom plate bracket 300 is clamped with the top cover bracket 100, and the plurality of bayonet portions 110 are disposed in one-to-one correspondence with the plurality of bayonet holes 312; each cell placement groove 313 is connected with the bottom accommodating cavity 311 and is used for placing the corresponding cylindrical cell 200; each elastic portion 320 is elastically connected to the corresponding cylindrical battery cell 200, and the plurality of elastic portions 320, the plurality of battery cell placement grooves 313, and the plurality of cylindrical battery cells 200 are disposed in a one-to-one correspondence.
In the present embodiment, the top cover holder 100 is formed with a top receiving chamber, which communicates with the bottom receiving chamber 311.
Compared with the prior art, the utility model has at least the following advantages:
because each cell placement groove 313 is connected with the bottom accommodating cavity 311 and is generally used for placing the corresponding cylindrical cell 200, so that the bottom wall of the cell placement groove 313 is used for being connected with the bottom end of the corresponding cylindrical cell 200, each elastic part 320 is used for being elastically connected with the corresponding cylindrical cell 200, each elastic part 320 is connected with the bottom wall of the corresponding cell placement groove 313, each elastic part 320 is used for being elastically connected with the bottom end of the corresponding cylindrical cell 200, each elastic part 320 is elastically deformed, the bottom ends of each elastic part 320 and the corresponding cylindrical cell 200 are matched, the problem that the contact area between the bottom end of each cylindrical cell 200 and the bottom plate bracket 300 is small due to the height difference of the bottom end of each cylindrical cell 200 is solved, so that the contact force between the bottom end of each cylindrical cell 200 and the corresponding elastic part 320 is large, the problem that each cylindrical cell 200 is easy to shake in the cell placement groove 313 is avoided, the position between each cylindrical cell 200 and the connecting piece is difficult to fracture, and the performance of each cylindrical cell bracket 300 is better.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A bottom plate bracket for detachable connection with a top cover bracket, the bottom plate bracket being formed with a bottom receiving cavity, characterized in that the bottom plate bracket includes an elastic portion;
the bottom plate support is also provided with a plurality of battery cell placing grooves, the battery cell placing grooves are distributed at intervals, and each battery cell placing groove is connected with the bottom accommodating cavity and is used for placing a corresponding cylindrical battery cell;
the number of the elastic parts is multiple, each elastic part is positioned in the corresponding battery cell placing groove and connected with the bottom plate support, the elastic parts are arranged in one-to-one correspondence with the battery cell placing grooves, and each elastic part is used for being elastically connected with the corresponding cylindrical battery cell.
2. The floor stand of claim 1, wherein the floor stand is an integrally formed structure.
3. The floor stand of claim 1, further comprising a plurality of heat dissipating holes formed therein, each of said heat dissipating holes being in communication with said bottom receiving cavity, a plurality of said heat dissipating holes being spaced around a peripheral wall of said floor stand.
4. A floor bracket according to claim 3, wherein each of said heat dissipating holes has an elliptical or rectangular or parallelogram cross-section.
5. The base plate bracket according to claim 1, wherein each elastic portion comprises a first elastic body and a second elastic body, the first elastic body and the second elastic body are arranged at intervals, the first elastic body and the second elastic body are connected with the inner wall of the battery cell placing groove, and the first elastic body and the second elastic body are used for elastically abutting against the cylindrical battery cell.
6. The floor stand of claim 5, wherein each of said first elastomer and each of said second elastomer are rubber structures.
7. The floor bracket of claim 1, wherein each of said resilient portions has a cross-section in the shape of a circular arc arch bridge.
8. The floor stand of claim 1, further comprising a plurality of bayonet holes, each of the bayonet holes in communication with the bottom receiving cavity, the plurality of bayonet holes spaced around the peripheral wall of the floor stand, each of the bayonet holes for being pierced by a bayonet portion of a corresponding top cover stand for the floor stand to be snapped into engagement with the top cover stand.
9. The floor stand of claim 1, wherein each of said resilient portions is bonded to said floor stand.
10. The cylindrical battery module is characterized by comprising a top cover bracket, a plurality of cylindrical battery cells and the bottom plate bracket according to any one of claims 1 to 9, wherein the top cover bracket is provided with a plurality of clamping parts, the clamping parts are arranged at intervals around the peripheral wall of the top cover bracket, each clamping part penetrates through the corresponding clamping hole so as to enable the bottom plate bracket to be clamped with the top cover bracket, and the clamping parts are arranged in one-to-one correspondence with the clamping holes; each cell placement groove is connected with the bottom accommodating cavity and is used for placing a corresponding cylindrical cell; each elastic part is elastically connected with the corresponding cylindrical battery cell, and the elastic parts, the battery cell placing grooves and the cylindrical battery cells are arranged in one-to-one correspondence.
CN202320636623.2U 2023-03-27 2023-03-27 Bottom plate support and cylindrical battery module Active CN219610626U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320636623.2U CN219610626U (en) 2023-03-27 2023-03-27 Bottom plate support and cylindrical battery module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320636623.2U CN219610626U (en) 2023-03-27 2023-03-27 Bottom plate support and cylindrical battery module

Publications (1)

Publication Number Publication Date
CN219610626U true CN219610626U (en) 2023-08-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320636623.2U Active CN219610626U (en) 2023-03-27 2023-03-27 Bottom plate support and cylindrical battery module

Country Status (1)

Country Link
CN (1) CN219610626U (en)

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