Battery cell, battery, and electrical apparatus
AssigneeContemporary Amperex Technology Co., Limited
InventorsChunyang PENG, Shiyuan LIAN, Zeyuan YIN, Jianyun CHEN
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Abstract
A battery cell, a battery, and an electrical apparatus are disclosed in the present application. The battery cell includes a shell and an end cover, where the shell has an opening; the end cover is welded at the opening to form a welding structure, the welding structure includes a plurality of first welding seams, the first welding seams are arranged corresponding to edge portions of the end cover, the plurality of first welding seams are connected to form a closed annular structure to be arranged surrounding the end cover; where two adjacent first welding seams are connected at a corresponding corner of the end cover in a laminated manner.
Claims20
A battery cell, comprising:
- a shell having an opening;
- an end cover, wherein the end cover is welded at the opening to form a welding structure, the welding structure comprises a plurality of first welding seams, the first welding seams are arranged corresponding to edge portions of the end cover, and the plurality of first welding seams are connected to form a closed annular structure to be arranged surrounding the end cover;
- wherein two adjacent first welding seams are connected at a corresponding corner of the end cover in a laminated manner.
Dependencies are inferred from the claim text.