Title:
TOP COVER ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/071524
Kind Code:
A1
Abstract:
Embodiments of the present application relate to the technical field of battery production, and disclose a top cover assembly, a battery cell, a battery and an electric device. The top cover assembly comprises a top cover, a connecting piece and a pressure relief valve. The top cover is connected to a housing of the battery cell, and is provided with a through hole. The connecting piece is arranged on the top cover, and is provided with a mounting hole in communication with the through hole and a first channel extending to the outside from a wall of the mounting hole. A first gas-permeable membrane is arranged at an opening where the first channel is in communication with the outside. The pressure relief valve is arranged in the mounting hole and can slide in the mounting hole under pressure. A second channel is arranged on the pressure relief valve.
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Inventors:
SHI GUANGDA (CN)
LI YING (CN)
GUO JINGHAO (CN)
CAI YAZHI (CN)
CHI QINGKUI (CN)
ZHONG LIBIN (CN)
LI YING (CN)
GUO JINGHAO (CN)
CAI YAZHI (CN)
CHI QINGKUI (CN)
ZHONG LIBIN (CN)
Application Number:
PCT/CN2022/116727
Publication Date:
May 04, 2023
Filing Date:
September 02, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M50/147; H01M50/30; H01M50/317
Foreign References:
| CN216980710U | 2022-07-15 | |||
| CN212810475U | 2021-03-26 | |||
| CN208173680U | 2018-11-30 | |||
| JP2019102190A | 2019-06-24 | |||
| CN202122577576U | 2021-10-25 |
Attorney, Agent or Firm:
CENFO INTELLECTUAL PROPERTY AGENCY (CN)
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