电池、电池组、电池包和用电设备

Abstract

本申请提供了一种电池、电池组、电池包和用电设备，该电池包括盖板组件；盖板组件具有内侧和外侧，从内侧至外侧的方向为第一方向；盖板组件包括极柱、盖板本体、密封圈和内垫片，密封圈设置于盖板本体与极柱之间，以密封盖板本体与极柱之间的间隙；极柱设置有内翻边，极柱的内翻边与内垫片之间的抵接处设置有至少一个排气槽，各个排气槽连通内垫片内侧的区域与内翻边外侧的区域；在氦气检查等密封检测过程中，电池内部的氦气能够沿着排气槽从内垫片内侧的区域流动至内翻边外侧的区域，进而泄露至外界，从而保证漏装密封圈的电池能够有效检出，避免出现漏装密封圈无法检出的情况发生，从而有效提高本申请实施例的电池的加工良率。

Claims

1. A battery, characterized by, Includes a cover plate assembly (10); the cover plate assembly (10) has an inner side and an outer side, and the direction from the inner side to the outer side is a first direction; The cover plate assembly (10) includes a pole post (11), a cover plate body (12), a sealing ring (13) and an inner gasket (14). The sealing ring (13) is disposed between the cover plate body (12) and the pole post (11) to seal the gap between the cover plate body (12) and the pole post (11). The pole post (11) is provided with an inner flange (111), and at least one vent groove (15) is provided at the contact point between the inner flange (111) of the pole post (11) and the inner gasket (14). Each of the vent grooves (15) is configured to connect the area inside the inner gasket (14) with the area outside the inner flange (111).

2. The battery of claim 1, wherein, At least part of the vent groove (15) is disposed on the lower end surface of the inner gasket (14).

3. The battery of claim 1, wherein, At least a portion of the vent groove (15) is configured to penetrate the inner gasket (14) along the first direction.

4. The battery of claim 1, wherein, At least part of the exhaust groove (15) is provided on the upper end surface of the inner flange (111).

5. The battery of claim 1, wherein, At least a portion of the exhaust groove (15) is configured to extend through the inner flange (111) along the first direction.

6. The battery of claim 1, wherein, An auxiliary gasket (16) is provided between the inner flange (111) of the pole post (11) and the inner gasket (14).

7. The battery of claim 6, wherein, At least a portion of the vent groove (15) is configured to penetrate the radially inner and radially outer regions of the auxiliary gasket (16); The radially inner region of the auxiliary gasket (16) is connected to the inner region of the inner gasket (14); The radially outer region of the auxiliary pad (16) is connected to the region on the outer side of the inner flange (111).

8. The battery of claim 1, wherein, The outer contour of the inner flange (111) is circular, and the inner gasket (14) is annular and sleeved on the circumferential outer side of the pole post (11); at least two exhaust grooves (15) are provided, and each exhaust groove (15) is arranged circumferentially at the abutment between the inner flange (111) of the pole post (11) and the inner gasket (14).

9. The battery of claim 8, wherein, Each of the exhaust grooves (15) is evenly distributed circumferentially at the contact point between the inner flange (111) of the pole post (11) and the inner gasket (14).

10. The battery of claim 2, wherein, The ratio of the depth of the vent groove (15) along the first direction to the depth of the inner gasket (14) along the first direction is less than 50%.

11. The battery according to claim 8 or 9, characterized in that, The venting groove (15) has a circumferential width ranging from 0.5 mm to 2 mm.

12. A battery pack, characterized by It includes at least one battery as claimed in any one of claims 1 to 11.

13. A battery pack, characterized by It includes at least one battery as claimed in any one of claims 1 to 11.

14. An electrical device, characterized by It includes at least one battery according to any one of claims 1 to 11.

Images