CN215342885U - Negative pole post subassembly and secondary cell top cap thereof - Google Patents
Negative pole post subassembly and secondary cell top cap thereof Download PDFInfo
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- CN215342885U CN215342885U CN202121151290.1U CN202121151290U CN215342885U CN 215342885 U CN215342885 U CN 215342885U CN 202121151290 U CN202121151290 U CN 202121151290U CN 215342885 U CN215342885 U CN 215342885U
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- post
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- 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
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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a negative pole post assembly and a secondary battery top cover thereof, wherein the negative pole post assembly comprises a negative pole post, a connecting piece, a sealing piece and an upper insulating piece arranged around the negative pole post, the connecting piece comprises a first connecting part, a second connecting part and a third connecting part which are sequentially connected, the first connecting part is fixed on a top cover plate, the second connecting part and the third connecting part are arranged in a groove in a surrounding manner, the sealing piece is arranged between the connecting piece and the negative pole post and abutted against the groove, and the upper insulating piece is abutted against the connecting piece and clamped and fixed with the negative pole post. The cathode post structure of the utility model means that the upper insulating part is clamped and fixed with the cathode post and simultaneously presses the connecting part, and the connecting part, the sealing part and the cathode post are sequentially abutted, thereby improving the connection firmness among the connecting part, the sealing part and the cathode post. And the upper insulating part and the negative pole column are mechanically clamped and fixed, so that the pollution problem caused by injection molding can be avoided.
Description
Technical Field
The utility model relates to the field of energy storage instruments, in particular to a negative pole column assembly and a secondary battery top cover thereof.
Background
In modern society, driving power sources for more and more electric tools and new energy vehicles are developed in a direction of high capacity and high safety, and batteries are widely used in electric tools and new energy vehicles due to their excellent characteristics such as high capacity. These batteries should have good safety in addition to high capacity to meet the standards of use and to meet the needs of people.
Secondary cell's utmost point post end includes utmost point post usually, welded fastening is the connecting piece on the top cap, carry out sealed sealing member between utmost point post and connecting piece, carry out the injection molding of parcel with utmost point post and connecting piece, with utmost point post, the sealing member, parts such as connecting piece are installed after the injection molding machine injection molding formation injection molding, the outward appearance nature of secondary cell top cap can be improved to the injection molding, and play the enhancement connecting piece, the firm nature of connection between utmost point post and the sealing member, but its technology of injection moulding is complicated, and cause the pollution easily, so at present many producers advocate to adopt other modes to replace injection moulding.
Therefore, it is desirable to provide a new top cover structure or a method for producing a top cover to solve the aforementioned problem of injection molding of top cover structures.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a negative electrode post assembly and a secondary battery top cap thereof, which are simple in structure and capable of maintaining the connection reliability between components in the post assembly without injection molding.
To achieve the above object, an aspect of the present invention provides a negative electrode tab assembly mounted to a top cap sheet of a secondary battery, including: negative pole post, connecting piece, sealing member and enclose and locate last insulating part of negative pole post, the connecting piece is including consecutive first connecting portion, second connecting portion and third connecting portion, first connecting portion are fixed in the top cap piece, the second connecting portion with the third connecting portion enclose and establish into the recess, the sealing member between the connecting piece with between the negative pole post and the butt in the recess, go up the insulating part butt in the connecting piece and with the negative pole post joint is fixed.
According to the negative pole column assembly, the assembly of the negative pole column and the top cover plate can be completed only by fixing the first connecting part and the top cover plate, the working procedure is simple, and complicated sealing and assembling processes are not needed. The sealing member butt is enclosed in the recess that establishes in the second connecting portion and the third connecting portion of connecting piece, goes up the insulating part butt and fixes in the connecting piece and with negative pole post joint, means promptly, goes up the insulating part and exerts pressure in the connecting piece when fixed with negative pole post joint, and carries out the butt in proper order with connecting piece, sealing member and negative pole post to in order to improve the firm nature of being connected between connecting piece, sealing member and the negative pole post. And the upper insulating part and the negative pole column are mechanically clamped and fixed without a complex injection molding process, so that the pollution problem caused by injection molding can be avoided.
Preferably, the peripheral wall of the upper part of the negative pole column extends outwards to form an upper boss, the upper insulating part is clamped and fixed on the upper boss, and the connection firmness between the upper insulating part and the negative pole column can be improved through the embedding mode.
Preferably, the negative pole post includes terminal spare and lower terminal spare, the upper portion of terminal spare is equipped with go up the boss, lower terminal spare covers in the orthographic projection of horizontal plane the orthographic projection of terminal spare and form joint portion in the edge go up, the sealing member support lean on and the joint in joint portion, the setting of edge joint portion is convenient for the joint between sealing member and the negative pole post.
Preferably, the upper terminal element, the lower terminal element, the sealing element and the third connecting portion enclose a cavity, the upper insulating element is clamped in the cavity and abuts against the second connecting portion and the third connecting portion at the same time, that is, the upper insulating element is clamped to the lower terminal element from above the third insulating element, and this connection is firm.
Preferably, the first connecting portion, the second connecting portion and the third connecting portion are integrally formed, and the first connecting portion and the third connecting portion are arranged in parallel.
Preferably, the sealing member has a body portion and a protrusion portion extending from an upper portion of the body portion toward the upper terminal member, a sidewall of the body portion abuts against an outer peripheral wall of the lower terminal member, and the other opposite sidewall abuts against a sidewall of the second connecting portion facing the lower terminal member, and the protrusion portion is spaced apart from the upper terminal member by the upper insulating member. The sealing element and the upper terminal piece are arranged at intervals, one side wall of the body part of the sealing element abuts against the peripheral wall of the lower terminal piece, the other opposite side wall abuts against the side wall of the second connecting part facing to the lower terminal piece, namely, the sealing element is not contacted with the upper terminal piece and is sealed between the lower terminal piece and the second connecting part in the horizontal direction, so that when the sealing element is sealed in the horizontal direction, the counter-elastic force in the vertical direction of the sealing element can not be applied to the joint surface of the copper-aluminum composite pole of the negative pole, and the problems that the resistance of the negative pole is increased and the negative pole is torn off due to the fact that the traditional sealing element is sealed in the vertical direction can be effectively avoided. Furthermore, the protruding part is clamped between the lower wall of the third connecting part and the upper wall of the lower terminal piece. The lower end of the body part is arranged in a suspended mode so as to release the bounce force formed in the vertical direction when the sealing element is sealed in the horizontal direction. The seal may be an electrically insulating material, preferably a rubber material, made of rubber or a plastic with a certain elasticity.
As another mode, the sealing member has a main body portion and a protruding portion extending from an upper portion of the main body portion toward the upper terminal member, the upper portion of the protruding portion is further provided with a reinforcing portion, the reinforcing portion abuts against a lower wall of the third connecting portion in the vertical direction, the protruding portion abuts against an upper wall of the lower terminal member in the vertical direction, the sealing member of this structure seals in the vertical direction, and the sealing member abuts against the groove, so that the second connecting portion can apply a force to the negative pole through the sealing member in the horizontal direction, thereby further reinforcing the connection between the connecting member and the negative pole. Furthermore, the body part is clamped between the second connecting part and the lower terminal part, the lower end of the body part is arranged in a suspended mode, and the protruding part and the reinforcing part are arranged at intervals by means of the upper insulating part and the upper terminal part.
The utility model provides a secondary battery top cover, which comprises a top cover plate, and a positive pole column assembly and a negative pole column assembly which are arranged on the top cover plate, wherein the top cover plate is provided with a negative pole column mounting hole, and the negative pole column assembly is fixed in the negative pole column mounting hole through the first connecting part. According to the secondary battery top cover, the assembly of the negative pole column and the top cover plate can be completed only by fixing the negative pole column assembly and the top cover plate, the working procedure is simple, and complicated sealing and assembling processes are not needed.
Preferably, the lower part of the top cover plate is concave to form a stepped negative pole mounting hole, and the first connecting part is clamped and fixed in the negative pole mounting hole, so that the size of the secondary battery top cover in the vertical direction can be reduced, and the volume energy density is improved.
Preferably, the lower insulating part is arranged below the top cover plate, the lower insulating part is clamped to the lower terminal part, a gap is formed between the lower insulating part and the sealing part in the vertical direction, and the sealing part is prevented from being rebounded in the vertical direction by the interval arrangement to be applied to the lower insulating part so as to influence the connection firmness between the lower terminal part and the lower insulating part.
Drawings
Fig. 1 is a perspective view of a secondary battery top cap according to the present invention.
Fig. 2 is a plan view of a secondary battery top cap according to the present invention.
Fig. 3 is a bottom view of the secondary battery top cap according to the present invention.
Fig. 4 is a cross-sectional view taken along a-a of fig. 2.
Fig. 5 is a cross-sectional view of fig. 2 in the direction B-B.
Fig. 6 is an exploded view of the secondary battery top cover of the present invention in a first direction.
Fig. 7 is an exploded view of the secondary battery top cover of the present invention in a second direction.
Fig. 8 is an enlarged view of a circled portion indicated by C in fig. 4.
Fig. 9 is an enlarged view of a portion indicated by a circle D in fig. 4.
Fig. 10 is a cross-sectional view of a negative post assembly of the present invention.
Fig. 11 is a variation of fig. 10.
Description of the element reference numerals
100-secondary battery top cover; 10-a top cover sheet; 11-negative pole post mounting holes; 13-positive pole mounting hole; 20-a positive post assembly; 21-positive pole column; 23-positive electrode connection; 231 — positive first connection; 233-positive second connection part; 235-positive electrode third connection; 25-positive seal; 27-positive pole upper insulator; 30-a negative post assembly; 31-negative pole column; 311-upper terminal piece; 3111-mounting a boss; 3113-a cavity; 313-lower terminal member; 3131-a snap-in portion; 33-a connector; 331-a first connection; 333-a second connecting part; 335-a third connection; 337-grooves; 35-a seal; 351-a body portion; 353-a boss; 355-a reinforcement; 37-upper insulator; 40-lower insulation; 41-a clamping piece; 50-liquid injection port; 60-space
Detailed Description
To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention 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 should be noted that, in general, the secondary battery is placed vertically, one side of the secondary battery top cover, where the pole extends out and is connected with the outside, is an upper side, and the other side is a lower side, and the thickness refers to the dimension along the up-and-down direction.
The secondary battery top cover can be used for sealing the shell to prepare a secondary battery, and the secondary battery top cover can be welded with the shell to be sealed. Referring to fig. 1 to 7, a secondary battery top cap 100 includes a top cap sheet 10, a liquid injection hole 50, and a positive electrode pillar assembly 20 and a negative electrode pillar assembly 30 provided on the top cap sheet 10, and a lower insulator 40 is provided below the top cap sheet 10 for electrically insulating the top cap sheet 10 from a cell in a case (not shown). Positive post subassembly 20 and negative post subassembly 30 can be the same or different, as shown in fig. 1-7, positive post subassembly 20 and negative post subassembly 30 are the same structure, and be equipped with positive post mounting hole 13 and negative post mounting hole 11 on the top cap piece 10 respectively, positive post subassembly 20 and negative post subassembly 30 are fixed in positive post mounting hole 13 and negative post mounting hole 11 respectively, both can all be insulated with top cap piece 10 electricity, also negative post subassembly 30 is insulated with top cap piece 10 electricity, and positive post subassembly 20 is connected with top cap piece 10 electricity, of course, positive post subassembly 20 and negative post subassembly 30 also can be different structures, and negative post subassembly 30 is insulated with top cap piece 10 electricity, and positive post subassembly 20 is connected with top cap piece 10 electricity, will be described in more detail respectively below for positive post subassembly 20 and negative post subassembly 30.
First, describing the negative pole assembly 30 in more detail, referring to fig. 1 to 8 and fig. 10 to 11, the negative pole assembly 30 includes a negative pole 31, a connecting member 33, a sealing member 35, and an upper insulating member 37 surrounding the negative pole 31, the connecting member 33 includes a first connecting portion 331, a second connecting portion 333, and a third connecting portion 335 connected in sequence, the first connecting portion 331 is fixed to the top cover 10, the second connecting portion 333 and the third connecting portion are surrounded to form a groove 337, the sealing member 35 is interposed between the connecting member 33 and the negative pole 31 and abuts against the groove 337, and the upper insulating member 37 abuts against the connecting member 33 and is clamped and fixed with the negative pole 31. The sealing member 35 abuts against the second connecting portion 333 of the connecting member 33 and the groove 337 surrounded by the third connecting portion 335, and the upper insulating member 37 abuts against the connecting member 33 and is fastened to the negative pole 31, that is, the upper insulating member 37 presses the connecting member 33 while being fastened to the negative pole 31, so as to sequentially abut against the connecting member 33, the sealing member 35 and the negative pole 31, thereby improving the connection firmness among the connecting member 33, the sealing member 35 and the negative pole 31.
As shown in fig. 1 to 8 and fig. 10 to 11, the negative electrode pillar 31 includes an upper terminal 311 and a lower terminal 313, the upper terminal 311 is provided with an upper boss 3111, an orthogonal projection of the lower terminal 313 on a horizontal plane covers an orthogonal projection of the upper terminal 311 to form a clamping portion 3131 on an edge, and the sealing member 35 abuts against and is clamped on the clamping portion 3131. The upper terminal piece 311, the lower terminal piece 313, the sealing member 35 and the third connecting portion 335 define a cavity 3113, and the upper insulating member 37 is clamped in the cavity 3113 and abuts against the second connecting portion 333 and the third connecting portion 335. The upper boss 3111 of the negative electrode tab 31 may be formed by crimping the negative electrode tab 31.
As shown in fig. 10, the sealing member 35 has a main body 351 and a protrusion 353 extending toward the upper terminal 311 from the upper portion of the main body 351, one side wall of the main body 351 abuts against the outer peripheral wall of the lower terminal 313, the other opposite side wall abuts against the side wall of the second connecting portion 333 facing the lower terminal 313, and the protrusion 353 is spaced apart from the upper terminal 311 by the upper insulating member 37. The sealing element 35 and the upper terminal element 311 are disposed at an interval, and a sidewall of the body portion 351 of the sealing element 35 abuts against the outer peripheral wall of the lower terminal element 313, and the other opposite sidewall abuts against a sidewall of the second connecting portion 333 facing the lower terminal element 313, that is, the sealing element 35 does not contact the upper terminal element 311, and is sealed between the lower terminal element 313 and the second connecting portion 333 in the horizontal direction, so that when the sealing element 35 is sealed in the horizontal direction, the vertical resilience of the sealing element cannot be applied to the joint surface of the copper-aluminum composite pole of the negative pole 31, and the problems of resistance increase and tearing-off of the negative pole 31 caused by the sealing of the conventional sealing element 35 in the vertical direction can be effectively avoided. The protrusion 353 is engaged between the lower wall of the third connecting portion 335 and the upper wall of the lower terminal 313, and the lower end of the main body 351 is suspended.
As shown in fig. 11, the sealing member 35 includes a main body 351 and a protrusion 353 extending toward the upper terminal 311 from an upper portion of the main body 351, the protrusion 353 is further provided with a reinforcement 355 at an upper portion thereof, the reinforcement 355 abuts against a lower wall of the third connecting portion 335 in the vertical direction, and the protrusion 353 abuts against an upper wall of the lower terminal 313 in the vertical direction. Second connecting portion 333 may apply a force to negative post 31 through seal 35 in the horizontal direction, thereby further strengthening the previous connection of connector 33 and negative post 31. The body 351 is clamped between the second connecting portion 333 and the lower terminal 313, and the lower end is suspended, and the protrusion 353 and the reinforcement 355 are spaced from each other by the upper insulating member 37 and the upper terminal 311.
The first connecting portion 331, the second connecting portion 333, and the third connecting portion 335 are integrally formed, and have the same material as the upper terminal member 311, and the first connecting portion 331 and the third connecting portion 335 are arranged in parallel. The lower portion of the top cover plate 10 is recessed to form a stepped negative post mounting hole 11, and the first connection portion 331 is engaged and fixed to the negative post mounting hole 11, because the size of the secondary battery top cover 100 in the vertical direction can be reduced to improve the volumetric energy density. The upper insulating member 37 is not formed by injection molding after the negative electrode tab 31, the connecting member 33, and the sealing member 35 are mounted, but is formed before the mounting of the components, has a certain deformation modulus, and is clamped to the negative electrode tab 21 by pressing. The bottom peripheral wall of the lower terminal 313 is provided with a boss to form a clamping portion 3131, the lower insulating member 40 is provided with a clamping member 41 clamped in the clamping portion 3131, a gap 60 is arranged between the lower insulating member 40 and the sealing member 35 in the vertical direction, and the arrangement of the gap 60 can prevent the sealing member 35 from exerting a rebound force in the vertical direction on the lower insulating member 40 to influence the connection firmness between the lower terminal 313 and the lower insulating member.
Next, describing the positive pole post assembly 20 in more detail, referring to fig. 1 to 7 and 9, for convenience of processing and installation, the positive pole post assembly 20 and the negative pole post assembly 30 are configured in the same manner, similarly, the positive pole post assembly 20 includes a positive pole post 21, a positive pole connecting member 23, a positive pole sealing member 25, and a positive pole upper insulating member 27 surrounding the positive pole post 21, the positive pole connecting member 23 includes a positive pole first connecting portion 231, a positive pole second connecting portion 233, and a positive pole third connecting portion 235 connected in sequence, the positive pole first connecting portion 231 is fixed to the top cover plate 10, the positive pole second connecting portion 233 and the positive pole third connecting portion 235 are surrounded to form a positive pole groove 237, the positive pole sealing member 25 is interposed between the positive pole connecting member 23 and the positive pole post 21 and abuts against the positive pole groove 237, and the positive pole upper insulating member 27 abuts against the positive pole connecting member 23 and is clamped and fixed to the positive pole post 21. However, in order to solve the problems of overcharge and puncture of the secondary battery during the use of the secondary battery, the positive electrode pillar assembly 20 and the top cover plate 10 are usually electrically conducted to form an external short circuit, so that when the positive electrode pillar assembly 20 is prepared by injection molding, conductive particles, such as conductive carbon or conductive metal, are added to the injection molding material, so that the positive electrode pillar and the connecting member in the positive electrode pillar assembly 20 are electrically connected through conductive plastic, and the positive electrode pillar assembly 20 and the top cover plate 10 are electrically conducted through the connection of the positive electrode connecting member 23 and the top cover plate 10. Of course, the positive and negative electrode pillar assemblies 20 and 30 may have different structures, and if the structures of the partial positive electrode sealing member 25, the positive electrode pillar 21, the positive electrode connecting member 23, the positive electrode sealing member 25, and the positive electrode upper insulating member 27 are adjusted based on actual requirements, the structures of the positive and negative electrode pillar assemblies 20 and 30 may not be completely symmetrical.
It should be noted that the above-mentioned embodiments illustrate rather than limit the scope of the utility model, and that those skilled in the art will be able to modify the utility model in its various equivalent forms after reading the present invention and to fall within the scope of the utility model as defined in the appended claims.
Claims (10)
1. A negative electrode column assembly (30) mounted to a top lid sheet (10) of a secondary battery, characterized by comprising: negative pole post (31), connecting piece (33), sealing member (35) and enclose and locate last insulating part (37) of negative pole post (31), negative pole post (31) include terminal piece (311) and lower terminal piece (313) on, connecting piece (33) are including consecutive first connecting portion (331), second connecting portion (333) and third connecting portion (335), first connecting portion (331) are fixed in top cap piece (10), second connecting portion (333) with recess (337) is enclosed to third connecting portion (335), sealing member (35) between connecting piece (33) with between negative pole post (31) and butt in recess (337), go up insulating part (37) butt in connecting piece (33) and with negative pole post (31) joint is fixed.
2. The negative electrode post assembly (30) according to claim 1, wherein the upper peripheral wall of the negative electrode post (31) extends outward to form an upper boss (3111), and the upper insulator (37) is snap-fitted to the upper boss (3111).
3. The negative electrode pillar assembly (30) of claim 2, wherein the upper boss (3111) is provided on the upper portion of the upper terminal member (311), the orthogonal projection of the lower terminal member (313) on the horizontal plane covers the orthogonal projection of the upper terminal member to form a snap-fit portion (3131) on the edge, and the sealing member (35) abuts against and snaps-fits to the snap-fit portion (3131).
4. The negative electrode column assembly (30) of claim 3, wherein the upper terminal member (311), the lower terminal member (313), the sealing member (35), and the third connecting portion (335) enclose a cavity (3113), and the upper insulator (37) is snapped into the cavity (3113) and simultaneously into abutment with the second connecting portion (333) and the third connecting portion (335).
5. The negative electrode pillar assembly (30) according to claim 3, wherein the first connection part (331), the second connection part (333), and the third connection part (335) are integrally formed, and the first connection part (331) and the third connection part (335) are arranged in parallel.
6. The negative electrode column assembly (30) according to any one of claims 3 to 5, wherein the sealing member (35) has a body portion (351) and a projection portion (353) extending from an upper portion of the body portion (351) toward the upper terminal member (311), one side wall of the body portion (351) abuts against an outer peripheral wall of the lower terminal member (313), the other opposite side wall abuts against a side wall of the second connecting portion (333) facing the lower terminal member (313), and the projection portion (353) is provided at a distance from the upper terminal member (311) via the upper insulating member (37).
7. The negative electrode column assembly (30) according to any one of claims 3 to 5, wherein the sealing member (35) has a body portion (351) and a projection portion (353) extending from an upper portion of the body portion (351) toward the upper terminal member (311), an upper portion of the projection portion (353) is further provided with a reinforcing portion (355), the reinforcing portion (355) abuts against a lower wall of the third connecting portion (335) in a vertical direction, and the projection portion (353) abuts against an upper wall of the lower terminal member (313) in the vertical direction.
8. A secondary battery top cap (100) characterized by comprising a top cap sheet (10) and a positive pole post assembly (20) and a negative pole post assembly (30) as claimed in any one of claims 1 to 7 arranged on the top cap sheet (10), wherein the top cap sheet (10) is provided with a negative pole post mounting hole (11), and the negative pole post assembly (30) is fixed on the negative pole post mounting hole (11) by means of the first connecting portion (331).
9. The secondary battery top cap (100) according to claim 8, wherein the lower part of the top cap piece (10) is recessed to form a stepped negative pole mounting hole (11), and the first connecting part (331) is clamped and fixed to the negative pole mounting hole (11).
10. The secondary battery top cap (100) according to claim 9, wherein a lower insulator (40) is provided under the top cap sheet (10), and the lower insulator (40) is snapped to the lower terminal member (313).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121151290.1U CN215342885U (en) | 2021-05-26 | 2021-05-26 | Negative pole post subassembly and secondary cell top cap thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121151290.1U CN215342885U (en) | 2021-05-26 | 2021-05-26 | Negative pole post subassembly and secondary cell top cap thereof |
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| Publication Number | Publication Date |
|---|---|
| CN215342885U true CN215342885U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121151290.1U Active CN215342885U (en) | 2021-05-26 | 2021-05-26 | Negative pole post subassembly and secondary cell top cap thereof |
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| CN (1) | CN215342885U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114447413A (en) * | 2022-01-28 | 2022-05-06 | 天津市捷威动力工业有限公司 | Battery cover plate and battery |
-
2021
- 2021-05-26 CN CN202121151290.1U patent/CN215342885U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114447413A (en) * | 2022-01-28 | 2022-05-06 | 天津市捷威动力工业有限公司 | Battery cover plate and battery |
| CN114447413B (en) * | 2022-01-28 | 2023-09-26 | 天津市捷威动力工业有限公司 | Battery cover plate and battery |
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