Battery cover plate assembly structure

Abstract

The utility model relates to a battery cover plate assembly structure which comprises a metal cover plate, a positive / negative pole column and a negative / positive pole column are respectively arranged on two sides of the upper part of the metal cover plate in the length direction, and injection molding rubber is arranged on the periphery of the upper part of the positive / negative pole column; a cover plate front anti-explosion valve is arranged in the middle of the upper portion of the metal cover plate, and a cover plate front liquid injection hole is formed in one side of the cover plate front anti-explosion valve. The utility model has the advantages of reasonable structure, few processing procedures, improved productivity, safer and more reliable sealing performance, and reduced charge and discharge heat.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery appliances, and particularly relates to a structure of a battery cover plate assembly. Background Art

[0002] The existing battery consists of a wound core tab, a connecting piece, and a cover plate pole column, which are respectively connected into an integrated battery. The positive connecting piece and the negative connecting piece are independent monomers. The process is to weld the wound core tab to the connecting piece and then weld it to the cover plate pole column to form a battery; or the wound core tab and the cover plate pole column base are integrated, and they are respectively connected into an integrated battery. The cover plate pole column base is integrated (at the cover plate design end, the base and the pole column are designed as an integral structure). The process is to weld the wound core tab to the cover plate base to form a battery. Therefore, it is very necessary to provide a battery cover plate assembly structure with reasonable structure, fewer processing procedures, improved production capacity, safer and more reliable sealing performance, and reduced charging and discharging heat. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a battery cover plate assembly structure with reasonable structure, fewer processing procedures, improved production capacity, safer and more reliable sealing performance, and reduced charging and discharging heat.

[0004] The purpose of the utility model is realized as follows: A battery cover plate assembly structure includes a metal cover plate. On both sides of the metal cover plate in the length direction above, a positive / negative pole column and a negative / positive pole column are respectively arranged. A plastic injection is arranged on the outer periphery above the positive / negative pole column. A cover plate positive explosion-proof valve is arranged in the middle above the metal cover plate, and a cover plate positive liquid injection hole is arranged on one side of the cover plate positive explosion-proof valve.

[0005] On both sides of the metal cover plate in the length direction at the bottom, a positive / negative welding pad and a negative / positive welding pad are respectively arranged. Cover plate bottom glue is arranged outside both the positive / negative welding pad and the negative / positive welding pad.

[0006] The positive / negative pole column, the negative / positive pole column, and the cover plate positive liquid injection hole are all circular structures.

[0007] The positive / negative welding pad and the negative / positive welding pad are both rectangular structures. The cover plate bottom glue is a square structure and is respectively arranged at both ends of the metal cover plate in the length direction at the bottom.

[0008] A cover plate bottom liquid injection hole is arranged at the bottom of the metal cover plate corresponding to the cover plate positive liquid injection hole, and the cover plate bottom liquid injection hole is communicated with the cover plate positive liquid injection hole.

[0009] A cover plate bottom explosion-proof valve is arranged at the bottom of the metal cover plate corresponding to the cover plate positive explosion-proof valve. Cover plate bottom positioning glue is arranged on both the upper and lower sides of the cover plate bottom explosion-proof valve.

[0010] A cover bottom glue is provided in the area corresponding to the region between the positive / negative welding pads and the negative / positive welding pads at the bottom of the metal cover.

[0011] A battery cover assembly structure further includes a group of identical battery cells, and the battery cells are installed on both side edges in the length direction of the bottom of the metal cover.

[0012] Strip-shaped termination glue is provided above each of the battery cells, and negative / positive battery cell tabs are provided at one inner end of each battery cell corresponding to the negative / positive welding pads, and positive / negative battery cell tabs are provided at the other inner end corresponding to the positive / negative welding pads.

[0013] Advantages of the present utility model: The present utility model is a battery cover assembly structure. During use, by changing the structure of connecting the cover pole column to the core tab, the present utility model solves the problem of multiple processing procedures, reduces the heat generated during welding from damaging the pole column seal, simplifies the connection between the pole column and the core tab, and generates less heat during charge and discharge. Advantages of the present utility model: ① The welding process of the pole column and the tab improves the production capacity by 50%; ② It is safer and more reliable for the battery seal; ③ The number of connection points between the pole column and the core tab is reduced, and less heat is generated during charge and discharge. The present utility model has the advantages of reasonable structure, few processing procedures, improved production capacity, safer and more reliable seal, and reduced heat generation during charge and discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the front structure of the present utility model.

[0015] Figure 2 It is a schematic diagram of the bottom structure of the present utility model.

[0016] Figure 3 It is a schematic diagram of the structure of the battery cell assembly of the present utility model.

[0017] In the figure: 10, positive / negative pole column; 11, liquid injection hole in the front part of the cover; 12, explosion-proof valve in the front part of the cover; 13, negative / positive pole column; 14, injection plastic; 15, metal cover; 20, cover bottom glue; 21, positive / negative welding pad; 22, liquid injection hole at the bottom of the cover; 23, explosion-proof valve at the bottom of the cover; 24, negative / positive welding pad; 25, cover bottom positioning glue; 26, cover bottom glue; 30, termination glue; 31, battery cell; 32, negative / positive battery cell tab; 33, positive / negative battery cell tab. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following further describes the present utility model with reference to the drawings. Embodiment

[0019] As Figures 1-3As shown in the figure, a battery cover plate assembly structure includes a metal cover plate 15. On both sides of the upper part of the metal cover plate 15 in the length direction, a positive / negative electrode post 10 and a negative / positive electrode post 13 are respectively arranged. An injection plastic 14 is arranged on the outer periphery above the positive / negative electrode post 10. A cover plate positive part explosion-proof valve 12 is arranged in the middle of the upper part of the metal cover plate 15. A cover plate positive part liquid injection hole 22 is arranged on one side of the cover plate positive part explosion-proof valve 12.

[0020] On both sides of the bottom of the metal cover plate 15 in the length direction, a positive / negative electrode welding pad 21 and a negative / positive electrode welding pad 24 are respectively arranged. Cover plate bottom glue 20 is arranged on the outer sides of both the positive / negative electrode welding pad 21 and the negative / positive electrode welding pad 24.

[0021] The positive / negative electrode post 10, the negative / positive electrode post 13, and the cover plate positive part liquid injection hole 11 are all circular structures.

[0022] The positive / negative electrode welding pad 21 and the negative / positive electrode welding pad 24 are both rectangular structures. The cover plate bottom glue 20 is a square structure and the cover plate bottom glue 20 is respectively arranged at both ends of the bottom of the metal cover plate 15 in the length direction.

[0023] A cover plate bottom liquid injection hole 22 is arranged at the bottom of the metal cover plate 15 corresponding to the cover plate positive part liquid injection hole 11. The cover plate bottom liquid injection hole 22 is communicated with the cover plate positive part liquid injection hole 11.

[0024] A cover plate bottom explosion-proof valve 23 is arranged at the bottom of the metal cover plate 15 corresponding to the cover plate positive part explosion-proof valve 12. Cover plate bottom positioning glue 25 is arranged on both the upper and lower sides of the cover plate bottom explosion-proof valve 23.

[0025] A cover plate bottom glue 26 is arranged in the area between the positive / negative electrode welding pad 21 and the negative / positive electrode welding pad 24 at the bottom of the metal cover plate 15.

[0026] The present utility model is a battery cover plate assembly structure. In use, by changing the way of connecting the cover plate pole column to the core pole ear structure, the present utility model solves the problem of many processing procedures, reduces the heat generated during welding from damaging the pole column sealing performance, makes the connection between the pole column and the core pole column simpler, and generates less heat during charge and discharge. The advantages of the present utility model are as follows: ① The production capacity of the pole column and pole ear welding process is increased by 50%; ② It is safer and more reliable for the battery sealing performance; ③ The number of connection points between the pole column and the core pole ear is reduced, and less heat is generated during charge and discharge. The present utility model has the advantages of reasonable structure, few processing procedures, increased production capacity, safer and more reliable sealing performance, and reduced charge and discharge heat. Embodiment

[0027] Such as Figures 1-3As shown in the figure, a battery cover plate assembly structure includes a metal cover plate 15. On both sides of the metal cover plate 15 in the length direction above, a positive / negative pole column 10 and a negative / positive pole column 13 are respectively provided. An injection plastic 14 is provided on the outer periphery above the positive / negative pole column 10. A cover plate positive part explosion-proof valve 12 is provided in the middle above the metal cover plate 15, and a cover plate positive part liquid injection hole 22 is provided on one side of the cover plate positive part explosion-proof valve 12.

[0028] On both sides of the bottom of the metal cover plate 15 in the length direction, a positive / negative pole welding pad 21 and a negative / positive pole welding pad 24 are respectively provided. Cover plate bottom glue 20 is provided on the outer sides of both the positive / negative pole welding pad 21 and the negative / positive pole welding pad 24.

[0029] A battery cover plate assembly structure further includes a group of battery cells 31 with the same structure. The battery cells 31 are installed on both side edges of the bottom of the metal cover plate 15 in the length direction.

[0030] Strip-shaped termination glue 30 is provided above each of the battery cells 31. Negative / positive battery cell pole tabs 32 are provided at one inner end of each battery cell 31 corresponding to the negative / positive pole welding pad 24, and positive / negative battery cell pole tabs 33 are provided at the other inner end corresponding to the positive / negative pole welding pad 21.

[0031] The utility model relates to a battery cover plate assembly structure. In use, by changing the way of connecting the cover plate pole column to the winding core pole tab, the utility model solves the problem of many processing procedures, reduces the heat generated during welding from damaging the pole column sealing performance, makes the connection between the pole column and the winding core pole tab simpler, and generates less heat during charge and discharge. The advantages of the utility model are as follows: ① The welding procedure between the pole column and the pole tab improves the production capacity by 50%; ② It is safer and more reliable for the battery sealing performance; ③ The number of connection points between the pole column and the winding core pole tab is reduced, and less heat is generated during charge and discharge. The utility model has the advantages of reasonable structure, few processing procedures, improved production capacity, safer and more reliable sealing performance, and reduced heat during charge and discharge.

Claims

1. A battery cover plate assembly structure, comprising a metal cover plate, characterized in that: Positive / negative poles and negative / positive poles are respectively arranged on both sides of the length direction above the metal cover plate, and injection plastic is arranged on the outer periphery above the positive / negative poles; a positive explosion-proof valve of the cover plate is arranged in the middle part above the metal cover plate, and a positive liquid injection hole of the cover plate is arranged on one side of the positive explosion-proof valve of the cover plate.

2. A battery cover assembly structure according to claim 1, characterized in that: Positive / negative electrode welding pads and negative / positive electrode welding pads are respectively arranged on both sides of the length direction of the bottom of the metal cover plate, and the outer sides of the positive / negative electrode welding pads and the negative / positive electrode welding pads are both provided with cover plate bottom glue.

3. A battery cover assembly structure according to claim 1, characterized in that: The positive / negative poles, negative / positive poles and the liquid injection hole at the positive part of the cover plate are all circular structures.

4. A battery cover assembly structure according to claim 2, characterized in that: The positive / negative electrode welding pads and the negative / positive electrode welding pads are both rectangular structures, the cover plate bottom glue is both square structures and the cover plate bottom glue is respectively arranged at both ends of the length direction of the bottom of the metal cover plate.

5. A battery cover assembly structure according to claim 1, characterized in that: A cover plate bottom injection hole is arranged at the bottom of the metal cover plate corresponding to the cover plate front injection hole, and the cover plate bottom injection hole is communicated with the cover plate front injection hole.

6. A battery cover assembly structure according to claim 1, characterized in that: A cover plate bottom explosion-proof valve is arranged at the bottom of the metal cover plate corresponding to the cover plate front explosion-proof valve, and cover plate bottom positioning glue is arranged on both upper and lower sides of the cover plate bottom explosion-proof valve.

7. A battery cover assembly structure according to claim 1, characterized in that: A cover plate bottom glue is arranged in the area between the positive / negative electrode welding pad and the negative / positive electrode welding pad at the bottom of the metal cover plate.

8. A battery cover assembly structure according to claim 1, characterized in that: It also includes a group of battery cells with the same structure, and the battery cells are installed on both sides of the bottom of the metal cover in the length direction.

9. A battery cover assembly structure according to claim 8, characterized in that: A strip-shaped termination glue is arranged above the battery cells, and negative / positive battery cell tabs are arranged at one end of the inner side of the battery cells corresponding to the negative / positive electrode welding pads, and positive / negative battery cell tabs are arranged at the other end of the inner side corresponding to the positive / negative electrode welding pads.

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