Anti-torsion battery top cover structure

Abstract

The utility model provides an anti-torsion battery top cover structure which comprises a battery shell, a plastic part, a pole and a first limiting convex column, the plastic part is arranged on the battery shell, and the pole is arranged on the plastic part; a plurality of first limiting convex columns are arranged on the plastic part at equal intervals in the circumferential direction, a plurality of first limiting grooves are formed in the circumferential side of the pole column, the first limiting grooves are arc-shaped grooves and are communicated to the top and the bottom of the pole column, and the first limiting convex columns are inserted into the inner sides of the first limiting grooves respectively. When the terminal post and the plastic part are connected in a pressing and riveting mode, the first limiting protruding columns arranged on the plastic part are naturally inserted into the first limiting grooves, under the limitation of the first limiting protruding columns, the terminal post is prevented from twisting relative to the plastic part, and then the stability of connection between the terminal post and the plastic part is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery top covers, in particular to an anti-torsion battery top cover structure. Background Art

[0002] During the battery assembly process, the battery top cover is usually sealed by riveting or in-mold injection molding, etc. Among them, cylindrical batteries basically use riveting for sealing.

[0003] After the existing cylindrical top cover structure is riveted, the pole column cannot effectively prevent torsion, resulting in the pole column of the battery being extremely prone to torsion during the use of the battery, and then causing the sealing of the battery top cover to fail.

[0004] The invention with the publication number of CN114883759A proposes a pole column, a top cover assembly and a battery. Among them, the pole column includes a main body and a connecting plate connected to the main body. The connecting plate is used to connect the pole ear. An extension part protrudes from the main body. One end of the extension part far from the main body is connected to the connecting plate, and a fusing structure is arranged on the extension part. After the pole column connection structure of the above battery top cover is assembled, it is still not convenient to prevent the pole column from twisting by limiting the pole column on the circumferential side, which may still cause the pole column to twist during the connection process, and then lead to the problem of the sealing failure of the battery top cover. Therefore, the present application proposes an anti-torsion battery top cover structure to solve the above problems. Content of the Utility Model

[0005] In view of this, the utility model proposes an anti-torsion battery top cover structure. When performing the press riveting connection between the pole column and the plastic part, a plurality of first limiting convex columns arranged on the plastic part are naturally inserted into the interior of each first limiting groove. Under the limitation of the plurality of first limiting convex columns, the pole column is prevented from twisting relative to the plastic part, thereby increasing the connection stability between the pole column and the plastic part.

[0006] The technical solution of the utility model is realized as follows: The utility model provides an anti-torsion battery top cover structure, including a battery housing, a plastic part, a pole column and a first limiting convex column, wherein,

[0007] The plastic part is arranged on the battery housing, and the pole column is arranged on the plastic part;

[0008] A plurality of first limiting convex columns are arranged at equal intervals in the circumferential direction on the plastic part. A plurality of first limiting grooves are formed on the circumferential side of the pole column. The first limiting grooves are arc-shaped grooves and communicate with the top and bottom of the pole column. The plurality of first limiting convex columns are respectively inserted into the inner sides of the respective first limiting grooves.

[0009] On the basis of the above technical solution, preferably, the plastic part includes an upper connecting plastic and a lower connecting plastic, wherein,

[0010] A first mounting through-hole is formed in the battery housing;

[0011] The upper connecting plastic and the lower connecting plastic are respectively located on opposite sides of the first mounting through-hole. The upper connecting plastic is fixedly connected to the lower connecting plastic through a plastic body, and the plastic body passes through the first mounting through-hole.

[0012] Based on the above technical solution, preferably, the pole column includes an upper connecting pole column and a lower connecting pole column, wherein,

[0013] A second mounting through-hole communicating with the lower connecting plastic is formed in the upper connecting plastic;

[0014] The upper connecting pole column and the lower connecting pole column are respectively located on the separated sides of the upper connecting plastic and the lower connecting plastic. The upper connecting pole column is fixedly connected to the lower connecting pole column through a pole column body, and the pole column body passes through the second mounting through-hole.

[0015] Based on the above technical solution, preferably, a mounting groove is formed at the top of the upper connecting plastic, and the upper connecting pole column is inserted inside the mounting groove and is in contact with the groove wall of the mounting groove.

[0016] Based on the above technical solution, preferably, it further includes a second limiting convex post, wherein,

[0017] A plurality of second limiting convex posts are all arranged inside the mounting groove, and second limiting grooves for inserting the second limiting convex posts are formed on the upper connecting pole column.

[0018] Based on the above technical solution, preferably, both the first limiting convex post and the second limiting convex post are cylindrical convex posts.

[0019] Based on the above technical solution, preferably, an assembly groove is formed in the battery housing. The upper connecting plastic includes an assembly boss, and the assembly boss is located on the side of the upper connecting plastic close to the lower connecting plastic, and the assembly boss is inserted inside the assembly groove.

[0020] Based on the above technical solution, preferably, the assembly groove is an arc-shaped groove, and the assembly boss is in contact with the groove wall of the assembly groove.

[0021] Based on the above technical solution, preferably, the number of the assembly grooves is two, and the two assembly grooves are respectively located on both sides of the first mounting through-hole.

[0022] Based on the above technical solutions, preferably, a rack-shaped groove is provided inside the first mounting through hole, and the plastic body includes tooth-shaped protrusions that engage with the rack-shaped groove.

[0023] The anti-twist battery top cover structure of the present utility model has the following beneficial effects compared with the prior art:

[0024] (1) When performing the press riveting connection between the pole post and the plastic part, a plurality of first limiting protrusions provided on the plastic part are naturally inserted into the respective first limiting grooves. Under the restriction of the plurality of first limiting protrusions, the pole post is prevented from twisting relative to the plastic part, thereby increasing the connection stability between the pole post and the plastic part.

[0025] (2) By providing a rack-shaped groove inside the first mounting through hole, specifically when performing the press riveting connection and forming process of the plastic part, tooth-shaped protrusions can be naturally formed on the periphery of the plastic body and inserted into the rack-shaped groove. Since the tooth-shaped protrusions engage with the rack-shaped groove, the plastic part can be prevented from twisting relative to the battery housing under the restriction of the rack-shaped groove, thereby increasing the connection stability between the plastic part and the battery housing. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 Is a perspective view of the anti-twist battery top cover structure of the present utility model;

[0028] Figure 2 Is a cross-sectional schematic view of the structure at the plastic body of the anti-twist battery top cover structure of the present utility model;

[0029] Figure 3 Is an exploded view of the structure at the plastic body of the anti-twist battery top cover structure of the present utility model;

[0030] Figure 4 Is a perspective schematic view of the plastic body of the anti-twist battery top cover structure of the present utility model;

[0031] Figure 5 Is a front view of the plastic body of the anti-twist battery top cover structure of the present utility model;

[0032] Figure 6 Is a perspective schematic view of the pole post of the anti-twist battery top cover structure of the present utility model. Detailed implementation mode

[0033] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] As shown in Figures 1 to 6 the anti-torsion battery top cover structure of the present utility model is characterized in that it includes a battery housing 1, a plastic part 2, a pole column 3 and a first limiting convex column 4. Among them, the plastic part 2 is arranged on the battery housing 1, and the pole column 3 is arranged on the plastic part 2; a plurality of first limiting convex columns 4 are arranged circumferentially and equidistantly on the plastic part 2, and a plurality of first limiting grooves 311 are opened on the circumferential side of the pole column 3. The first limiting grooves 311 are arc-shaped grooves and communicate with the top and bottom of the pole column 3, and a plurality of first limiting convex columns 4 are respectively inserted into the inner sides of the respective first limiting grooves 311.

[0035] In specific implementation, both the plastic part 2 and the pole column 3 are installed on the battery housing 1 by riveting. When performing the press riveting connection between the pole column 3 and the plastic part 2, a plurality of first limiting convex columns 4 arranged on the plastic part 2 are naturally inserted into the respective first limiting grooves 311. Under the limitation of the plurality of first limiting convex columns 4, the pole column 3 is prevented from twisting relative to the plastic part 2, thereby increasing the connection stability between the pole column 3 and the plastic part 2.

[0036] As a preferred implementation mode, the plastic part 2 includes an upper connecting plastic 21 and a lower connecting plastic 22. Among them, a first installation through hole 11 is opened on the battery housing 1; the upper connecting plastic 21 and the lower connecting plastic 22 are respectively located on opposite sides of the first installation through hole 11, and the upper connecting plastic 21 is fixedly connected to the lower connecting plastic 22 through a plastic body 23, and the plastic body 23 passes through the first installation through hole 11.

[0037] With such a design, after the plastic part 2 is press riveted and formed, the upper connecting plastic 21 and the lower connecting plastic 22 can be respectively located at the top and bottom of the first installation through hole 11 for limiting connection, thereby preventing the plastic part 2 from detaching from the battery housing 1 and increasing the connection stability of the plastic part 2.

[0038] As a preferred embodiment, the terminal post 3 includes an upper connecting terminal post 31 and a lower connecting terminal post 32. Among them, a second installation through hole 211 communicating with the lower connecting plastic 22 is formed in the upper connecting plastic 21; the upper connecting terminal post 31 and the lower connecting terminal post 32 are respectively located on the separated sides of the upper connecting plastic 21 and the lower connecting plastic 22, and the upper connecting terminal post 31 is fixedly connected to the lower connecting terminal post 32 through a terminal post body 33, and the terminal post body 33 passes through the second installation through hole 211.

[0039] With such a design, after the terminal post 3 is formed by press riveting, the upper connecting terminal post 31 and the lower connecting terminal post 32 can be respectively located at the top of the upper connecting plastic 21 and the bottom of the lower connecting plastic 22. Thus, through the limiting effects of the top and the bottom, the connection process of the terminal post 3 is completed, and further, the terminal post 3 is prevented from detaching from the plastic part 2, increasing the connection stability of the terminal post 3.

[0040] As a preferred embodiment, an installation groove 212 is formed at the top of the upper connecting plastic 21, and the upper connecting terminal post 31 is inserted inside the installation groove 212 and fits against the groove wall of the installation groove 212.

[0041] With such a design, after the terminal post 3 is formed by press riveting, the installation groove 212 can cover the periphery of the upper connecting terminal post 31, and by limiting the upper connecting terminal post 31 from the periphery, the connection stability of the terminal post 3 is increased.

[0042] As a preferred embodiment, it further includes a second limiting convex post 5. Among them, a plurality of second limiting convex posts 5 are all arranged inside the installation groove 212, and a second limiting groove 312 for inserting the second limiting convex post 5 is formed on the upper connecting terminal post 31.

[0043] With such a design, the second limiting convex post 5 is the second component for restricting the torsion of the terminal post 3. Specifically, after the terminal post 3 is formed by press riveting, a plurality of second limiting convex posts 5 are respectively inserted inside the respective second limiting grooves 312, thereby preventing the terminal post 3 from twisting relative to the plastic part 2, and further increasing the connection stability between the terminal post 3 and the plastic part 2.

[0044] As a preferred embodiment, both the first limiting convex post 4 and the second limiting convex post 5 are cylindrical convex posts.

[0045] As a preferred embodiment, an assembly groove 12 is formed on the battery housing 1, and the upper connecting plastic 21 includes an assembly boss 213. The assembly boss 213 is located on the side of the upper connecting plastic 21 close to the lower connecting plastic 22, and the assembly boss 213 is inserted inside the assembly groove 12.

[0046] The assembly groove 12 is an arc-shaped groove, and the assembly boss 213 fits against the groove wall of the assembly groove 12.

[0047] The number of the assembly grooves 12 is two, and the two assembly grooves 12 are respectively located on both sides of the first mounting through hole 11.

[0048] With such a design, after the plastic part 2 is press riveted and formed, the assembly boss 213 can be formed inside the assembly groove 12 and fit against the groove wall of the assembly groove 12. Under the restriction of the assembly groove 12, the plastic part 2 can be prevented from shifting relative to the battery housing 1, thereby increasing the connection stability of the plastic part 2.

[0049] As a preferred embodiment, a rack-shaped groove 111 is provided inside the first mounting through hole 11, and the plastic body 23 includes a toothed protrusion 231, and the toothed protrusion 231 meshes with the rack-shaped groove 111.

[0050] By providing the rack-shaped groove 111 inside the first mounting through hole 11, specifically when the plastic part 2 is press riveted and connected and formed, the toothed protrusion 231 can be naturally formed on the circumferential side of the plastic body 23 and inserted into the rack-shaped groove 111. Since the toothed protrusion 231 meshes with the rack-shaped groove 111, under the restriction of the rack-shaped groove 111, the plastic part 2 can be prevented from twisting relative to the battery housing 1, thereby increasing the connection stability between the plastic part 2 and the battery housing 1.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery top cover structure with an anti-twist feature, characterized in that: It comprises a battery housing (1), a plastic part (2), a pole (3) and a first limiting protrusion (4), wherein: A plastic part (2) is arranged on the battery housing (1), and the pole (3) is arranged on the plastic part (2); A plurality of first limiting protrusions (4) are equidistantly arranged on the plastic part (2) in the circumferential direction, a plurality of first limiting grooves (311) are provided on the circumferential side of the pole (3), the first limiting grooves (311) are arc-shaped grooves and are connected to the top and bottom of the pole (3), and the plurality of first limiting protrusions (4) are respectively inserted into the inner side of each of the first limiting grooves (311).

2. The anti-twist battery top cover structure according to claim 1, characterized in that: The plastic part (2) comprises an upper connecting plastic (21) and a lower connecting plastic (22), wherein: The battery housing (1) is provided with a first mounting through hole (11); The upper connecting plastic (21) and the lower connecting plastic (22) are respectively located on opposite sides of the first mounting through hole (11); the upper connecting plastic (21) is fixedly connected to the lower connecting plastic (22) via a plastic body (23); and the plastic body (23) passes through the first mounting through hole (11).

3. The anti-twist battery top cover structure according to claim 2, characterized in that: The pole (3) comprises an upper connecting pole (31) and a lower connecting pole (32), wherein: The upper connecting plastic (21) is provided with a second mounting through hole (211) which is connected to the lower connecting plastic (22); The upper connecting pole (31) and the lower connecting pole (32) are respectively located on the side away from the upper connecting plastic (21) and the lower connecting plastic (22); the upper connecting pole (31) is fixedly connected to the lower connecting pole (32) via a pole body (33); and the pole body (33) passes through the second mounting through hole (211).

4. The anti-twist battery top cover structure according to claim 3, characterized in that: A mounting groove (212) is provided on the top of the upper connecting plastic (21), and the upper connecting pole (31) is inserted into the inner side of the mounting groove (212) and fits with the groove wall of the mounting groove (212).

5. The anti-twist battery top cover structure according to claim 4, characterized in that: It also includes a second limiting protrusion (5), wherein: A plurality of second limiting protrusions (5) are all arranged inside the installation groove (212), and a second limiting groove (312) for the second limiting protrusions (5) to be inserted is provided on the upper connecting pole (31).

6. The anti-twist battery top cover structure according to claim 5, characterized in that: The first limiting protrusion (4) and the second limiting protrusion (5) are both cylindrical protrusions.

7. The anti-twist battery top cover structure according to claim 3, characterized in that: The battery housing (1) is provided with an assembly groove (12); the upper connecting plastic (21) comprises an assembly boss (213); the assembly boss (213) is located on a side of the upper connecting plastic (21) close to the lower connecting plastic (22); and the assembly boss (213) is inserted into the interior of the assembly groove (12).

8. The anti-twist battery top cover structure according to claim 7, characterized in that: The assembly groove (12) is an arc-shaped groove, and the assembly boss (213) fits against the groove wall of the assembly groove (12).

9. The anti-twist battery top cover structure according to claim 8, characterized in that: The number of the assembly grooves (12) is two, and the two assembly grooves (12) are respectively located on two sides of the first mounting through hole (11).

10. The anti-twist battery top cover structure according to claim 3, characterized in that: A rack-shaped groove (111) is provided on the inner side of the first mounting through hole (11), and the plastic body (23) comprises a tooth-shaped protrusion (231), and the tooth-shaped protrusion (231) is meshed with the rack-shaped groove (111).

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