Top cover structure

Abstract

The utility model discloses a top cover structure, and belongs to the field of sealing structures. A top cover structure comprises a top cover sheet with a mounting hole and an electrode column arranged in the mounting hole, and further comprises an upper plastic part and a lower plastic part which are respectively arranged at the upper end and the lower end of the top cover sheet and are used for fixing the electrode column; wherein a first sealing part is arranged between the top cover sheet and the upper plastic part; the sealing ring is arranged on the periphery of the mounting end of the electrode column in a sleeving manner and is positioned between the electrode column and the side wall of the mounting hole; wherein a first annular convex block is fixedly arranged on the electrode column, and the lower end of the sealing ring abuts against the first annular convex block; according to the utility model, the problem that the compression amount of a local sealing ring is relatively small is effectively solved, so that the installation of the electrode column achieves a better sealing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing structures, in particular to a top cover structure. Background Art

[0002] After retrieval, a patent with the authorization number CN218919084U in China discloses a device for improving the sealing performance of a new energy battery top cover and a new energy battery. The device includes a top cover plate, and through holes are provided on the top cover plate; an electrode post, the electrode post includes a fixed seat and an installation end connected to the fixed seat, the installation end passes through the through hole, and the fixed seat abuts against the lower surface of the top cover plate; a plastic part, the plastic part is arranged on the outer periphery of the electrode post and is used to fix the electrode post, and an air passing groove is provided on the plastic part, and the air passing groove is used to pass air through the upper and lower surfaces of the top cover plate; a sealing ring, sleeved on the outer periphery of the installation end of the electrode post and located between the electrode post and the side wall of the through hole, and is used to seal the gap between the top cover plate and the electrode post. However, this sealing ring sealing technology has the following defects. After the pole column is welded, the compression amount of the sealing ring is reduced due to the influence of welding, resulting in the sealing performance being affected. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the problem in the prior art that the compression amount of the sealing ring is reduced due to the influence of welding, resulting in the sealing performance being affected, and to propose a top cover structure.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A top cover structure includes a top cover sheet with an installation hole and an electrode post arranged in the installation hole, and further includes: an upper plastic part and a lower plastic part, which are respectively installed at the upper and lower ends of the top cover sheet and are used to fix the electrode post; wherein, a first sealing part is arranged between the top cover sheet and the upper plastic part; a sealing ring, sleeved on the outer periphery of the installation end of the electrode post and located between the electrode post and the side wall of the installation hole; wherein, a first annular convex block is fixedly arranged on the upper part of the electrode post, and the lower end of the sealing ring abuts tightly against the first annular convex block.

[0006] In order to improve the sealing performance between the upper plastic part and the top cover sheet, preferably, the first sealing part includes a second annular convex block fixedly arranged on the top cover sheet, the axis of the second annular convex block is collinear with the axis of the electrode post, and an upper annular groove matched with the second annular convex block is arranged at the lower end of the upper plastic part.

[0007] In order to further improve the sealing performance between the upper plastic part and the top cover sheet, further, a second sealing part is arranged between the lower end of the upper plastic part and the top cover sheet.

[0008] In order to further improve the sealing performance between the upper plastic part and the top cover sheet, furthermore, the second sealing part includes a third annular convex block fixedly arranged at the lower end of the upper plastic part, the axis of the third annular convex block is collinear with the axis of the electrode post, and a lower annular groove matched with the third annular convex block is arranged on the top cover sheet.

[0009] In order to facilitate the installation of the electrode post, furthermore, the radial cross-sectional shapes of the second annular convex block and the third annular convex block are both rectangular, or the radial cross-sectional shapes of the second annular convex block and the third annular convex block are both trapezoidal.

[0010] In order to prevent the first annular convex block from damaging the sealing ring, preferably, the radial cross-sectional shape of the first annular convex block is semi-circular, and the arc surface faces the sealing ring.

[0011] In order to improve the sealing performance of the electrode post, furthermore, the radial cross-sections of the second annular convex block and the third annular convex block form an inclined S-shaped sealing structure.

[0012] In order to improve the sealing performance of the electrode post, furthermore, sealing gaskets are fixedly arranged in both the upper annular groove and the lower annular groove.

[0013] In order to facilitate the installation of the electrode post, preferably, the first annular convex block and the electrode post are integrally formed.

[0014] Compared with the prior art, the present utility model provides a top cover structure, which has the following beneficial effects:

[0015] 1. For this top cover structure, through the design of the first annular convex block, the problem of relatively small compression amount of the local sealing ring is solved, and the sealing ring structure has a compensation mechanism, so that a better sealing effect is achieved for the installation of the electrode post.

[0016] 2. For this top cover structure, by clamping the second annular convex block on the top cover sheet into the upper annular groove, the sealing performance between the top cover sheet and the upper plastic part is further improved, thereby improving the installation sealing performance of the electrode post.

[0017] 3. For this top cover structure, the sealing performance between the upper plastic part and the top cover sheet can be significantly improved through the S-shaped sealing structure, thereby indirectly improving the sealing performance of the electrode post.

[0018] The parts not involved in this device are the same as or can be implemented by the prior art. The present utility model effectively solves the problem of relatively small compression amount of the local sealing ring, so that a better sealing effect is achieved for the installation of the electrode post. Description of the Drawings

[0019] Figure 1 It is a first perspective axonometric structural schematic diagram of a top cover structure proposed by the present utility model;

[0020] Figure 2 Second perspective isometric structural schematic diagram of a top cover structure proposed by the present utility model;

[0021] Figure 3 Partial exploded view of a top cover structure proposed by the present utility model;

[0022] Figure 4 Partial sectional structural schematic of a top cover structure proposed by the present utility model Figure 1 ;

[0023] Figure 5 Partial sectional structural schematic of a top cover structure proposed by the present utility model Figure 2 ;

[0024] Figure 6 Structural schematic of part A in a top cover structure proposed by the present utility model Figure 5 ;

[0025] In the figure: 1, top cover sheet; 2, upper plastic part; 3, lower plastic part; 4, sealing ring; 5, electrode post; 6, first annular convex block; 7, second annular convex block; 8, upper annular groove; 9, third annular convex block; 10, lower annular groove; 11, gasket. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in 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 of the embodiments.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0028] Embodiment:

[0029] Refer to Figures 1 - 6, an embodiment of the present utility model provides a top cover structure, which includes a top cover sheet 1 with a mounting hole and an electrode post 5 arranged in the mounting hole, and further includes: an upper plastic part 2 and a lower plastic part 3 with circular holes, which are respectively installed at the upper and lower ends of the top cover sheet 1 for fixing the electrode post 5; wherein, a first sealing part is provided between the top cover sheet 1 and the upper plastic part 2; a sealing ring 4 in the shape of a circular ring is sleeved on the outer periphery of the mounting end of the electrode post 5 and is located between the electrode post 5 and the side wall of the mounting hole for sealing the gap between the electrode post 5 and the mounting hole; wherein, a first annular convex block 6 is fixedly arranged on the upper part of the electrode post 5, the lower end of the sealing ring 4 abuts against the first annular convex block 6, the first annular convex block 6 is integrally formed with the electrode post 5, and the radial cross-sectional shape of the first annular convex block 6 is semi-circular.

[0030] Specifically, when installing the electrode post 5, the first annular convex block 6 can abut against the bottom of the sealing ring 4, thus solving the problem of relatively small compression amount of the local sealing ring 4, enabling the sealing ring 4 structure to have a compensation mechanism, so that it achieves a better sealing effect. After the electrode post welding is completed, the sealing ring 4 structure of this product can ensure that the compression amount of the sealing ring 4 will not be reduced due to the welding of the electrode post 5, thereby ensuring the sealing performance of the sealing ring 4.

[0031] The first sealing part in the top cover structure includes a second annular convex block 7 fixedly arranged on the top cover sheet 1, the second annular convex block 7 is integrally formed with the top cover sheet 1, the axis of the second annular convex block 7 is collinear with the axis of the electrode post 5, and the lower end of the upper plastic part 2 is provided with an upper annular groove 8 cooperating with the second annular convex block 7.

[0032] Specifically, during the installation process, the second annular convex block 7 on the top cover sheet 1 can be stuck into the upper annular groove 8, thereby further improving the sealing performance between the top cover sheet 1 and the upper plastic part 2, and thus improving the installation sealing performance of the electrode post 5.

[0033] Refer to Figure 5 , a second sealing part is provided between the lower end of the upper plastic part 2 and the top cover sheet 1, and the second sealing part includes a third annular convex block 9 fixedly arranged at the lower end of the upper plastic part 2, the third annular convex block 9 is integrally formed with the upper plastic part 2, the axis of the third annular convex block 9 is collinear with the axis of the electrode post 5, and the top cover sheet 1 is provided with a lower annular groove 10 cooperating with the third annular convex block 9.

[0034] Specifically, during the installation process, the third annular convex block 9 on the upper plastic part 2 can also be stuck into the lower annular groove 10 on the top cover sheet 1, thereby further improving the sealing performance between the top cover sheet 1 and the upper plastic part 2, and thus improving the installation sealing performance of the electrode post 5.

[0035] The radial cross-sectional shapes of the above-mentioned second annular bump 7 and third annular bump 9 are both rectangular. During installation, the second annular bump 7 and the third annular bump 9 can be directly inserted into the upper annular groove 8 and the lower annular groove 10, facilitating the installation of the electrode post 5.

[0036] In another embodiment, the radial cross-sectional shapes of the above-mentioned second annular bump 7 and third annular bump 9 are both trapezoidal. The trapezoidal second annular bump 7 and third annular bump 9 can further improve the installation efficiency. Moreover, when the areas of the trapezoidal second annular bump 7 and third annular bump 9 are larger than those of the upper annular groove 8 and the lower annular groove 10, the sealing effect of the second annular bump 7 and the third annular bump 9 can also be improved.

[0037] The radial cross-sections of the above-mentioned second annular bump 7 and third annular bump 9 form an inclined S-shaped sealing structure. The S-shaped sealing structure can significantly improve the sealing performance between the upper plastic part 2 and the top cover sheet 1, thereby indirectly improving the sealing performance of the electrode post 5.

[0038] Sealing gaskets 11 are fixedly arranged in both the above-mentioned upper annular groove 8 and the lower annular groove 10. The material of the sealing gasket 11 is the same as that of the sealing ring 4. The sealing gasket 11 can further improve the sealing performance of the second annular bump 7 and the third annular bump 9.

[0039] In actual assembly, the top cover is fixedly installed on the battery cell, and the combination of the two forms a battery, which is common knowledge in the art and will not be elaborated in detail herein.

[0040] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A top cover structure, comprising a top cover sheet (1) having a mounting hole and an electrode column (5) arranged in the mounting hole, characterized in that: Also includes: An upper plastic part (2) and a lower plastic part (3) are respectively mounted on the upper and lower ends of the top cover sheet (1) and are used to fix the electrode column (5); Wherein, a first sealing portion is provided between the top cover sheet (1) and the upper plastic part (2); A sealing ring (4) is sleeved on the outer circumference of the mounting end of the electrode column (5) and is located between the electrode column (5) and the side wall of the mounting hole; Wherein, a first annular protrusion (6) is fixedly provided on the electrode column (5), and the lower end of the sealing ring (4) is tightly pressed against the first annular protrusion (6).

2. A top cover structure according to claim 1, characterized in that: The first sealing portion comprises a second annular protrusion (7) fixedly arranged on the top cover sheet (1), the axis of the second annular protrusion (7) being colinear with the axis of the electrode column (5), and the lower end of the upper plastic part (2) being provided with an upper annular groove (8) cooperating with the second annular protrusion (7).

3. A top cover structure according to claim 2, characterized in that: A second sealing portion is provided between the lower end of the upper plastic part (2) and the top cover sheet (1).

4. A top cover structure according to claim 3, characterized in that: The second sealing portion comprises a third annular protrusion (9) fixedly arranged at the lower end of the upper plastic part (2), the axis of the third annular protrusion (9) being colinear with the axis of the electrode column (5), and the top cover sheet (1) being provided with a lower annular groove (10) cooperating with the third annular protrusion (9).

5. A top cover structure according to claim 4, characterized in that: The radial cross-sectional shapes of the second annular protrusion (7) and the third annular protrusion (9) are both rectangular; Alternatively, the radial cross-sectional shapes of the second annular protrusion (7) and the third annular protrusion (9) are both trapezoidal.

6. A top cover structure according to claim 1, characterized in that: The radial cross-section of the first annular protrusion (6) is semicircular, and the arc surface faces the sealing ring (4).

7. A top cover structure according to claim 4, characterized in that: The radial cross-sections of the second annular protrusion (7) and the third annular protrusion (9) form an inclined S-shaped sealing structure.

8. A top cover structure according to claim 4, characterized in that: A sealing gasket (11) is fixedly disposed in both the upper annular groove (8) and the lower annular groove (10).

9. A top cover structure according to claim 1, characterized in that: The first annular protrusion (6) and the electrode column (5) are integrally formed.

Images