端盖、端盖组件、储能装置及用电设备

Abstract

本申请提供一种端盖、端盖组件、储能装置及用电设备，增强端盖组件的结构稳定性，提高储能装置的安全性能。端盖包括第一表面和第二表面，沿端盖的厚度方向上，第一表面和第二表面相背设置，端盖设有第一极柱孔、安装槽和凹槽，第一极柱孔贯穿第一表面和第二表面，安装槽和凹槽的开口均设于第一表面，安装槽环绕第一极柱孔设置，且与第一极柱孔连通，并用于安装端盖组件的上绝缘件，凹槽位于安装槽背离第一极柱孔的一侧，且与安装槽连通。

Claims

1. An end cap for use in an end cap assembly, characterized by, The end cap includes a first surface and a second surface. Along the thickness direction of the end cap, the first surface and the second surface are disposed opposite to each other. The end cap is provided with a first pole hole, a mounting groove and a recess. The first pole hole penetrates through the first surface and the second surface. The openings of the mounting groove and the recess are both disposed on the first surface. The mounting groove is disposed around the first pole hole and communicates with the first pole hole, and is used to install the upper insulating member of the end cap assembly. The recess is located on the side of the mounting groove opposite to the first pole hole and communicates with the mounting groove.

2. The end cap of claim 1, wherein The end cap also includes a first peripheral side, which is connected between the first surface and the second surface, and the groove extends through the first peripheral side.

3. An end cap according to claim 1 or 2, characterised in that The mounting groove includes a first groove bottom wall surface, which is disposed opposite to the opening of the mounting groove. The groove includes a second groove bottom wall surface, which is disposed opposite to the opening of the groove. The minimum distance between the second groove bottom wall surface and the first surface is greater than or equal to the distance between the first groove bottom wall surface and the first surface.

4. The end cap of claim 3, wherein, Along the direction from the mounting groove to the recess, the distance between the bottom wall of the second groove and the first surface gradually increases.

5. The end cap of claim 3, wherein, The end cap also includes a hydrophobic coating, which is disposed on the bottom wall of the first tank.

6. The end cap of claim 5, wherein, The mounting groove also includes a first groove sidewall, which surrounds and is connected to the first groove bottom wall. The hydrophobic coating is also provided on the first groove sidewall.

7. The end cap according to claim 5, characterized in that, The end cap also includes a hydrophilic coating, which is disposed on the bottom wall of the second tank.

8. The end cap of claim 7, wherein, The thickness of the hydrophobic coating is less than or equal to the thickness of the hydrophilic coating.

9. An end cap according to claim 7 or 8, characterised in that The groove also includes a second groove sidewall, which surrounds the second groove bottom wall and is connected to the second groove bottom wall. The hydrophilic coating is also provided on the second groove sidewall.

10. The end cap of claim 1 or 2, wherein, There are two first pole post holes and two mounting slots. The two first pole post holes are spaced apart. Each mounting slot surrounds one first pole post hole. There are at least two grooves. Each groove communicates with the mounting slot.

11. An end cap assembly characterized by, The end cap assembly includes an end cap as described in any one of claims 1 to 10, an upper insulating member, and a pole post. The upper insulating member is installed in the mounting groove. The upper insulating member has a second pole post hole. The second pole post hole penetrates the upper insulating member along the thickness direction and communicates with the first pole post hole. The pole post passes through the first pole post hole and the second pole post hole.

12. An energy storage device, characterized by The energy storage device includes a housing, a cell assembly, and an end cap assembly as described in claim 11. The housing has a receiving cavity and an opening. The receiving cavity is located inside the housing and contains an electrolyte. The opening is located on the top side of the receiving cavity and communicates with the receiving cavity. The cell assembly is housed in the receiving cavity. The end cap assembly is mounted on the housing, closes the opening, and is electrically connected to the cell assembly.

13. An electrical device, characterized by The device includes the energy storage device of claim 12, which is used to supply power to the electrical equipment.

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