Circular battery cover plate

Abstract

The utility model provides a kind of circular battery cover plate. The circular battery cover plate includes substrate, pole, upper plastic, lower plastic and connecting piece, the substrate and lower plastic are all discoid, the pole middle part is connected in substrate by being provided with connection, the upper plastic is connected between the pole upper portion and substrate, the lower plastic is fixedly connected in substrate lower portion, the connecting piece includes discoid piece body one and piece body two, the piece body one center has the connecting hole that is passed through, the piece body one and piece body two have the buckling structure that can be buckled and connected, and piece body two is connected in piece body lower portion by buckling structure tight fit. The circular battery cover plate is relatively low in cost.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, specifically to a terminal connecting piece and its battery cover. Background Technology

[0002] In the battery cover (also known as the top cover or sealing plate), the connecting piece (also known as the terminal connecting piece, the electrode adapter piece, or busbartab) is a key internal conductive structural component. Its core function is to achieve a low-resistance, high-reliability electrical connection between the internal electrode and the external terminal of the battery cell.

[0003] The existing connecting piece is directly fixed to the lower part of the pole post, and the connection part between the pole post and the connecting piece is exposed to the external environment, which has an adverse effect on its stability.

[0004] The connecting piece needs to connect to the pole and also shield the connection area, so a cylindrical connecting part must be machined on the connecting piece. Although this design achieves the purpose of connection and shielding of the connection area, it makes the connecting piece structure complex, the manufacturing cost relatively high, and the assembly process requirements of the connecting piece are also quite stringent. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by providing a circular battery cover that is relatively low in cost and easy to assemble.

[0006] To achieve the above objectives, this utility model can be implemented through the following technical solutions: A circular battery cover includes a substrate, an electrode post, an upper plastic, a lower plastic, and a connecting piece. The substrate and the lower plastic are both disc-shaped. The electrode post is connected to the substrate through its center. The upper plastic is connected between the upper part of the electrode post and the substrate. The lower plastic is fixed to the lower part of the substrate. The connecting piece includes a disc-shaped piece one and a piece two. The piece one has a through-hole at its center. The piece one and the piece two have a fastening structure that allows them to be fastened together. The piece two is tightly connected to the lower part of the piece two through the fastening structure.

[0007] In the aforementioned circular battery cover, the lower end of the electrode post has a protruding connecting section, the lower part of the electrode post abuts against the first sheet body, and the connecting section is embedded in the connecting hole of the first sheet body.

[0008] In the aforementioned circular battery cover, the upper part of the sheet is in contact with the lower plastic surface, and the lower end of the connecting section is flush with the lower part of the sheet.

[0009] In the aforementioned circular battery cover, the fastening structure includes a first annular protruding fastening edge at the lower part of the sheet body and a second annular protruding fastening edge at the upper part of the sheet body. The second fastening edge is fastened and connected to the outside of the first fastening edge, and the two are tightly fitted together.

[0010] In the aforementioned circular battery cover, the fastening edge and the sheet body are an integral structure.

[0011] In the aforementioned circular battery cover, the upper part of the sheet has a deformation groove that is directly opposite the fastening edge.

[0012] In the aforementioned circular battery cover, the second fastening edge is located at the edge of the two sheet bodies, and when the first fastening edge and the second fastening edge are fastened together, the outer edge of the first sheet body is flush with the outer edge of the second sheet body.

[0013] In the aforementioned circular battery cover, there is a gap between the first sheet and the second sheet.

[0014] In the aforementioned circular battery cover, the two centers of the sheet have protruding buffer portions that are directly opposite the lower end of the electrode post.

[0015] In the aforementioned circular battery cover, the buffer portion protrudes from the upper part of the second sheet, and the lower part of the second sheet has a buffer groove directly opposite the buffer portion.

[0016] Compared with existing technologies, this circular battery cover plate achieves a stable connection between the first piece and the terminal post. After the first piece and the second piece are connected, they can stably cover the connection point of the terminal post, preventing the connection point from being exposed. While improving its stability, it can also ensure that the connection at the connection point is relatively simple.

[0017] Meanwhile, the appropriate gap between plate one and plate two in the connecting piece provides good cushioning under stress, improving its stability. Furthermore, the buffer section on plate two further enhances its cushioning performance, making it highly practical. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the circular battery cover.

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the first piece.

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the front side of the second piece.

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure on the back of the second piece.

[0022] Figure 5 yes Figure 1 A schematic diagram of the local structure at point A.

[0023] In the picture: 1. Substrate; 2. Pole post; 21. Connecting section; 3. Upper plastic; 4. Lower plastic; 5. Sheet body one; 51. Connecting hole; 52. Fastening edge one; 53. Deformation groove; 6. Sheet body two; 61. Fastening edge two; 62. Buffer part; 63. Buffer groove. Detailed Implementation

[0024] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings.

[0025] like Figure 1-5 As shown, this circular battery cover includes a substrate 1, an electrode post 2, an upper plastic 3, a lower plastic 4, and a connecting piece. The substrate 1 and the lower plastic 4 are both disc-shaped. The electrode post 2 is connected to the substrate 1 through the center. The upper plastic 3 is connected between the upper part of the electrode post 2 and the substrate 1. The lower plastic 4 is fixed to the lower part of the substrate 1. The connecting piece includes a disc-shaped piece 5 and a disc 6. The disc 5 has a through connecting hole 51 in the center. The disc 5 and the disc 6 have a fastening structure that allows them to be fastened together. The disc 6 is tightly connected to the lower part of the disc 5 through the fastening structure.

[0026] After the lower end of the electrode post 2 is inserted into the connection hole 5 of the plate body 5, the lower end of the electrode post 2 can be stably connected to the plate body 5.

[0027] After the second piece 6 is tightly connected to the first piece 5 through a snap-fit ​​structure, the second piece 6 covers the connection between the first piece 5 and the pole 2, thereby preventing the connection of the pole 2 from being exposed.

[0028] The substrate 1 serves as the basic support, ensuring that the pole post 2, the upper plastic 3, and the lower plastic 4 can be connected on a unified basic support.

[0029] Since plate 5 is connected to terminal post 2, plate 6 can be stably connected to plate 5 under the action of the fastening structure. It can be seen that the assembly of plate 5 and plate 6 is not difficult, which ultimately ensures the stable and simple assembly of the entire battery cover.

[0030] The lower end of the pole post 2 has a protruding connecting section 21, and the lower part of the pole post 2 abuts against the sheet body 5. The connecting section 21 is embedded in the connecting hole 51 of the sheet body 5.

[0031] Connector segment 21 has two functions: Firstly, since the connecting section 21 matches the connecting hole 51 of the plate body 5, the plate body 5 and the pole post 2 can be stably connected. Secondly, since the outer diameter of the connecting section 21 is smaller than the outer diameter of the pole post 2, the lower end of the pole post 2 can stably abut against the upper part of the plate body 5.

[0032] The upper part of the sheet 5 is in contact with the lower plastic 4, and the lower end of the connecting section 21 is flush with the lower part of the sheet 5.

[0033] While improving connection stability, it also ensures the compactness of its structure.

[0034] The fastening structure includes a fastening edge 52 protruding from the lower part of the sheet 5 and a fastening edge 61 protruding from the upper part of the sheet 6. The fastening edge 61 is fastened to the outside of the fastening edge 52 and the two are tightly connected.

[0035] After the first snapping edge 52 and the second snapping edge 61 are tightly fitted and connected, the first piece 5 and the second piece 6 can be stably connected together.

[0036] The fastening edge 52 and the sheet 5 are an integral structure.

[0037] The integrated structure can effectively improve the structural compactness of the sheet-5.

[0038] The upper part of the sheet 5 has a deformation groove 53 that is directly opposite the fastening edge 52.

[0039] The above-mentioned fastening edge 52 is formed by die stamping. After stamping, the deformation groove 53 formed during the stamping process remains on the other side of the sheet 5.

[0040] The deformation groove 53 is not merely a residual structure from the stamping process. The deformation groove 53 can also appropriately reduce the contact area between the sheet 5 and the lower plastic 4, ultimately ensuring that the sheet 5 adheres to the lower plastic 4 as stably as possible.

[0041] The second fastening edge 61 is located at the edge of the second piece 6, and when the first fastening edge 52 and the second fastening edge 61 are fastened together, the outer edge of the first piece 5 is flush with the outer edge of the second piece 6.

[0042] This eliminates sharp protrusions, and the connection between the first snap-fit ​​edge 52 and the second snap-fit ​​edge 61 ensures a compact structure for the connecting piece.

[0043] There is a gap between sheet 5 and sheet 6.

[0044] Under the action of this gap, the entire battery cover can generate a certain buffer when subjected to force, thus appropriately improving its safety performance.

[0045] The plate 6 has a protruding buffer portion 62 at its center, and the buffer portion 62 is directly opposite the lower end of the pole post 2.

[0046] The buffer portion 62 protrudes from the upper part of the second sheet 6, and the lower part of the second sheet 6 has a buffer groove 63 that is directly opposite the buffer portion 62.

[0047] The buffer section 62 can further improve its buffering performance. At the same time, the buffer groove 63 is also a residual structure formed after the buffer section 62 is stamped.

[0048] The circular battery cover plate first is stably connected to the terminal post. After the first plate is connected to the second plate, it can stably cover the connection point of the terminal post, preventing the connection point from being exposed. While improving its stability, it can also ensure that the connection at the connection point is relatively simple.

[0049] Meanwhile, the appropriate gap between plate one and plate two in the connecting piece provides good cushioning under stress, improving its stability. Furthermore, the buffer section on plate two further enhances its cushioning performance, making it highly practical.

[0050] The above-described technical solution of this utility model addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies. The parts not covered in this application's technical solution are the same as or can be implemented using existing technologies, and will not be described in detail here.

[0051] The technical solutions in the above embodiments have clearly and completely described the content of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A circular battery cover, comprising a substrate, an electrode post, an upper plastic, a lower plastic, and a connecting piece, wherein the substrate and the lower plastic are both disc-shaped, the electrode post is inserted through and connected to the substrate at its center, the upper plastic is connected between the upper part of the electrode post and the substrate, and the lower plastic is fixedly connected to the lower part of the substrate, characterized in that, The connecting piece includes a disc-shaped piece one and a piece two. The disc one has a through connecting hole in the center. The disc one and the piece two have a fastening structure that allows them to be fastened together. The piece two is tightly connected to the lower part of the disc through the fastening structure.

2. The circular battery cover according to claim 1, characterized in that, The lower end of the electrode post has a protruding connecting section, and the lower part of the electrode post abuts against the plate body. The connecting section is embedded in the connecting hole of the plate body.

3. The circular battery cover according to claim 2, characterized in that, The upper part of the sheet body is in contact with the lower plastic surface, and the lower end of the connecting section is flush with the lower part of the sheet body.

4. The circular battery cover according to claim 1, 2, or 3, characterized in that, The fastening structure includes a first annular protruding fastening edge at the lower part of the sheet body and a second annular protruding fastening edge at the upper part of the sheet body. The second fastening edge is fastened and connected to the outside of the first fastening edge, and the two are tightly fitted together.

5. The circular battery cover according to claim 4, characterized in that, The fastening edge and the sheet body are an integral structure.

6. The circular battery cover according to claim 5, characterized in that, The upper part of the sheet has a deformation groove that is directly opposite the fastening edge.

7. The circular battery cover according to claim 4, characterized in that, The second fastening edge is located at the two edges of the sheet body, and when the first fastening edge and the second fastening edge are fastened together, the outer edge of the first sheet body is flush with the outer edge of the second sheet body.

8. The circular battery cover according to claim 4, characterized in that, There is a gap between sheet one and sheet two.

9. The circular battery cover according to claim 8, characterized in that, The two centers of the plate have protruding buffer portions, and the buffer portions are directly opposite the lower end of the pole post.

10. The circular battery cover according to claim 9, characterized in that, The buffer portion protrudes from the upper part of the second sheet, and the lower part of the second sheet has a buffer groove directly opposite the buffer portion.

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