Title:
BATTERY CELL AND MANUFACTURING METHOD AND MANUFACTURING SYSTEM THEREFOR, BATTERY, AND ELECTRICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/050282
Kind Code:
A1
Abstract:
Embodiments of the present application provide a battery cell and a manufacturing method and manufacturing system therefor, a battery, and an electrical device. The battery cell of the embodiments of the present application comprises: a housing, provided with an opening; an electrode assembly, accommodated in the housing; and an end cover, configured to cover the opening. The end cover comprises a cover body and a protrusion surrounding an outer side of the cover body, the protrusion protrudes from an inner surface of the cover body in a direction facing the electrode assembly, and at least a portion of the protrusion is located within the housing and is configured to mate with the housing. A recess is formed at a position on the end cover corresponding to the protrusion, and the recess is recessed from an outer surface of the cover body in the direction facing the electrode assembly, and is configured to release a stress when the protrusion extends into the housing. The present application can improve the assembly efficiency of the battery cell and enhance the safety of the battery cell.
Inventors:
FANG KUN (CN)
GUO ZHIJUN (CN)
GUO ZHIJUN (CN)
Application Number:
PCT/CN2021/122105
Publication Date:
April 06, 2023
Filing Date:
September 30, 2021
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M50/107
Domestic Patent References:
| WO2013024774A1 | 2013-02-21 |
Foreign References:
| GB1206627A | 1970-09-23 | |||
| CN207504025U | 2018-06-15 | |||
| CN113300033A | 2021-08-24 | |||
| CN113258179A | 2021-08-13 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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