| CPC H01M 50/533 (2021.01) [H01M 50/107 (2021.01); H01M 50/152 (2021.01); H01M 50/169 (2021.01)] | 20 Claims |
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1. A battery cell, comprising:
a housing, wherein an opening is provided at an end portion of the housing;
an electrode assembly arranged inside the housing, the electrode assembly comprising an electrode body and a first tab, the first tab being leaded from one end of the electrode body;
an end cap closing the opening, the outer periphery of the end cap being fixed to the housing by welding; and
a conductive piece located between the electrode assembly and the end cap, the conductive piece being electrically connected to the first tab, the conductive piece being electrically connected to the end cap to form a conducting loop by being molten-welded to the end cap using heat from a welding process during which the end cap is welded to the housing, and an outer edge of the conductive piece being welded to the end cap at a welding interface extending at a position close to a welding region at which the end cap is welded to the housing;
wherein the end cap is in direct contact with an inner surface of the housing, the conductive piece is in direct contact with the inner surface of the housing along a first direction, and the conductive piece is in direct contact with the end cap along a second direction, the first direction being approximately perpendicular to the second direction.
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