Title:
BATTERY CELL END COVER, END COVER ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRICAL APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/165462
Kind Code:
A1
Abstract:
Provided in the present application are a battery cell end cover, an end cover assembly, a battery cell, a battery, and an electrical apparatus. The battery cell end cover comprises a through hole and a pressure relief structure, the through hole being used for the arrangement of an electrode terminal, a first weak part of the pressure relief structure being configured to be arcuate, and the centre of curvature thereof being positioned on the side furthest from the through hole, such that, when the first weak part cracks, the pressure relief structure surrounded by the arcuate first weak part can be folded towards the centre of curvature of the first weak part under the action of stress in order to be away from the electrode terminal, reducing the risk of the pressure relief structure surrounded by the first weak part overlapping the electrode terminal and reducing the possibility that the pressure relief structure will come into contact with the electrode terminal, and thereby helping to improve the safety performance of the battery.
Inventors:
CHEN XIAOBO (CN)
GU MINGGUANG (CN)
GU MINGGUANG (CN)
Application Number:
PCT/CN2023/078676
Publication Date:
September 07, 2023
Filing Date:
February 28, 2023
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M50/342; H01M50/15; H01M50/588
Foreign References:
| CN217158380U | 2022-08-09 | |||
| CN111033790A | 2020-04-17 | |||
| CN1776936A | 2006-05-24 | |||
| CN215578755U | 2022-01-18 | |||
| JP2002367583A | 2002-12-20 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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