Battery top cover

Abstract

The utility model provides a battery top cover, which comprises a top cover piece, a top cover plate, a top cover plate, a top cover plate and a top cover plate cover plate, and is characterized in that the top cover plate is provided with a first end and a second end; a mounting hole is formed in the top cover plate; the mounting hole penetrates from the first end to the second end, and a pole assembly is mounted in the mounting hole; the first end is provided with a turnover ring, and the turnover ring is turned over towards the direction of the pole assembly and is used for preventing the pole assembly from moving upwards; a rotation stopping groove is formed in the turnover ring, and the rotation stopping groove is connected with the pole assembly in a clamping manner; according to the utility model, the pole assembly is fixed on the mounting hole through the turnover ring, and then the rotation stopping groove on the turnover ring is clamped with the boss on the upper plastic, so that the pole assembly is stably fixed on the top cover plate, and the pole assembly can be prevented from rotating relative to the top cover plate.

Description

Technical Field

[0001] The utility model relates to the field of lithium ion batteries, in particular to a battery top cover. Background Art

[0002] With the development of new energy, the requirements for energy density of existing batteries are further improved. New energy power batteries are usually secondary batteries, which means that after the battery is discharged, the active material can be activated by charging and the battery can continue to be used.

[0003] A Chinese utility model patent with announcement number CN219419260U discloses a cover plate assembly and a battery, a cover plate assembly comprising a top cover plate and a first insulating member, the top cover plate being provided with a mounting hole; a pole being mounted in the mounting hole; a first end being provided with a folding portion, folded toward the center of the mounting hole; an axial inner wall of the mounting hole being provided with a first fixing portion; a first insulating member being clamped between the pole and the mounting hole, the folding portion abutting against the first insulating member; a second fixing portion being provided on the axial outer peripheral surface of the first insulating member, the first fixing portion being fixedly matched with the second fixing portion so that the first insulating member is fixedly connected to the mounting hole.

[0004] In the above patent, due to the limitation of the connection method between the pole assembly and the top cover sheet, the pole assembly is prone to rotate relative to the top cover sheet.

[0005] To this end, we propose a battery top cover to solve the problem of the pole assembly rotating relative to the top cover sheet. Utility Model Content

[0006] The purpose of the utility model is to solve the shortcomings of the prior art. In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A battery top cover comprises: a top cover sheet, the top cover sheet having a first end and a second end which are away from each other; a mounting hole is provided on the top cover sheet; the mounting hole passes through from the first end to the second end, and a pole assembly is installed in the mounting hole; a folding ring is provided at the first end, the folding ring is folded toward the pole assembly and is used to prevent the pole assembly from moving upward; a rotation-stopping groove is provided at the upper end of the folding ring, and the rotation-stopping groove is clamped with the pole assembly.

[0008] Further preferably, the pole assembly includes a sealing ring, a pole and an upper plastic; the upper plastic is formed by injection molding around the outside of the pole, a boss is provided on the upper plastic, the pole is fixed in the mounting hole by a sealing ring, the sealing ring insulates the top cover sheet from the pole, the folding ring is fixed to the upper plastic by riveting and flanging, and the anti-rotation groove is clamped with the boss.

[0009] Further preferably, the pole has a stepped surface, and a rotation-stopping edge is arranged on the stepped surface.

[0010] Further preferably, there are two anti-rotation grooves, and the two anti-rotation grooves are asymmetric.

[0011] Further preferably, the height of the boss is lower than the depth of the anti-rotation groove.

[0012] Further preferably, the distance between the side edge of the boss and the side wall of the anti-rotation groove is 0.1-1 mm.

[0013] Further preferably, the back side of the top cover sheet is equipped with lower plastic.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model fixes the pole assembly on the mounting hole through the folding ring, and then clamps the anti-rotation groove on the folding ring with the upper plastic boss, which not only stably fixes the pole assembly on the top cover sheet, but also prevents the pole assembly from rotating relative to the top cover sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the top cover piece;

[0017] Figure 2 It is an explosion diagram of the utility model;

[0018] Figure 3 It is a schematic diagram of the assembly of the utility model;

[0019] Figure 4 It is a cross-sectional view of the utility model;

[0020] Figure 5 This is a flow chart of the anti-rotation groove forming.

[0021] In the figure: top cover sheet 1, sealing ring 2, pole 3, upper plastic 4, lower plastic 5, mounting hole 11, folding ring 12, anti-rotation groove 13, anti-rotation edge 31, boss 41. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-Figure 5A battery top cover comprises: a top cover sheet 1, wherein the top cover sheet 1 has a first end and a second end which are away from each other; a mounting hole 11 is provided on the top cover sheet 1; the mounting hole 11 passes through from the first end to the second end, and a pole assembly is installed in the mounting hole 11; a folding ring 12 is provided at the first end, and the folding ring 12 is folded toward the pole assembly and used to prevent the pole assembly from moving upward; a rotation-stopping groove 13 is provided at the upper end of the folding ring 12, and the rotation-stopping groove 13 is clamped with the pole assembly, and a lower plastic 5 is assembled on the back of the top cover sheet 1.

[0024] In the embodiment: there are two pole assemblies, which are respectively a positive pole assembly and a negative pole assembly, and there are two mounting holes 11, which are respectively arranged on both sides of the top cover sheet 1, as shown in Figure 5. The folding ring 12 is a vertical ring before folding. Several anti-rotation grooves 13 are first opened on the vertical ring. Preferably, two anti-rotation grooves 13 are opened on the vertical ring on each side. The center of the circle connecting the two mounting holes 11 on the surface of the top cover sheet 1 is the center line. The two anti-rotation grooves 13 are asymmetrically designed relative to the center line, and the anti-rotation grooves 13 on the left and right sides are also asymmetrically designed. The positive pole assembly and the negative pole assembly are respectively installed on the mounting holes 11 on both sides, and then the vertical ring is folded toward the pole assembly to form a folding ring 12 for preventing the pole assembly from moving upward, and is clamped with the pole assembly through the anti-rotation groove 13 to effectively prevent the pole assembly from rotating relative to the top cover sheet 1.

[0025] The pole assembly includes a sealing ring 2, a pole 3 and an upper plastic 4; the upper plastic 4 is formed by injection molding around the outside of the pole 3, and a boss 41 is provided on the upper plastic 4. The pole 3 is fixed in the mounting hole 11 through the sealing ring 2, and the sealing ring 2 keeps the top cover sheet 1 and the pole 3 insulated. The folding ring 12 is fixed to the upper plastic 4 by riveting and flanging, and the anti-rotation groove 13 is clamped with the boss 41.

[0026] In the embodiment, the anti-rotation groove 13 is engaged with the boss 41 , which effectively prevents the pole assembly from rotating relative to the top cover sheet 1 .

[0027] The pole 3 has a stepped surface, and a rotation-stopping edge 31 is arranged on the stepped surface.

[0028] In the embodiment: the design of the anti-rotation edge 31 effectively prevents the pole 3 and the upper plastic 4 from rotating.

[0029] There are multiple anti-rotation grooves 13, and the multiple anti-rotation grooves 13 are asymmetrical.

[0030] In the embodiment: preferably, two anti-rotation grooves 13 are provided, the two anti-rotation grooves 13 are asymmetrically designed relative to the center line, and the anti-rotation grooves 13 on the left and right sides are also asymmetrically designed.

[0031] The height of the boss 41 is lower than the depth of the anti-rotation groove 13 .

[0032] In the embodiment, the height of the boss 41 is lower than the anti-rotation groove 13, so as to facilitate the vertical ring to be folded toward the pole assembly.

[0033] The distance between the side edge of the boss 41 and the side wall of the anti-rotation groove 13 is 0-10 mm.

[0034] In the embodiment: the margin from the boss 41 to the stop groove 13 is 0.1 mm.

[0035] In the embodiment: the margin from the boss 41 to the stop groove 13 is 0.5 mm.

[0036] In the embodiment: the distance between the side edge of the boss 41 and the side wall of the anti-rotation groove 13 is preferably 0.1-1 mm, and the side edge of the boss 41 maintains an appropriate distance from the side wall of the anti-rotation groove 13. When the anti-rotation groove 13 is formed, the boss 41 will not interfere, which facilitates the folding of the vertical ring toward the pole assembly.

[0037] The utility model realizes the assembly of the top cover through a simple process; the manufacturing process is suitable for top covers of different specifications, has strong versatility, is conducive to standardized production, and reduces the cost of top cover assembly.

[0038] The utility model fixes the pole assembly on the mounting hole through the folding ring, and then clamps the anti-rotation groove on the folding ring with the upper plastic boss, which not only stably fixes the pole assembly on the top cover sheet, but also prevents the pole assembly from rotating relative to the top cover sheet.

Claims

1. A battery top cover, characterized in that: include: A top cover sheet, the top cover sheet having a first end and a second end which are away from each other; a mounting hole is provided on the top cover sheet; the mounting hole passes through from the first end to the second end, and a pole assembly is installed in the mounting hole; a folding ring is provided at the first end, the folding ring is folded toward the pole assembly and is used to prevent the pole assembly from moving upward; a rotation-stopping groove is provided at the upper end of the folding ring, and the rotation-stopping groove is clamped with the pole assembly; The pole assembly comprises a sealing ring, a pole and an upper plastic; the outer part of the pole is surrounded by injection molding to form the upper plastic, a boss is provided on the upper plastic, the pole is fixed in the mounting hole by the sealing ring, the sealing ring insulates the top cover sheet from the pole, the folding ring is fixed to the upper plastic by riveting and flanging, and the anti-rotation groove is clamped with the boss; The height of the boss is lower than the depth of the anti-rotation groove; The distance between the side edge of the boss and the side wall of the anti-rotation groove is 0-10mm.

2. A battery top cover according to claim 1, characterized in that: The pole has a stepped surface, and a rotation-stopping edge is arranged on the stepped surface.

3. A battery top cover according to claim 1, characterized in that: There are multiple anti-rotation grooves, and the multiple anti-rotation grooves are asymmetrical.

4. A battery top cover according to claim 1, characterized in that: The back side of the top cover sheet is equipped with lower plastic.

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