CPC H01M 50/528 (2021.01) [H01M 50/147 (2021.01); H01M 50/562 (2021.01); H01M 50/591 (2021.01); H01M 50/176 (2021.01); H01M 50/55 (2021.01); H01M 50/553 (2021.01)] | 20 Claims |
1. A cap assembly for a secondary battery, comprising:
a cap plate, wherein the cap plate comprises an electrode lead-out hole;
an electrode terminal, wherein the electrode terminal comprises a terminal board, the terminal board is located at a side of the cap plate and covers the electrode lead-out hole;
a fixing member, wherein the fixing member at least partially surrounds the terminal board to fix the terminal board to the fixing member;
a connection member, wherein the connection member is separated from the electrode terminal by the fixing member, and the connection member is connected with the cap plate; the connection member comprises a main body, the main body is provided with a first groove formed downwardly along a top of the main body;
wherein a part of the fixing member is located in the first groove;
wherein the main body comprises a cylinder-like base portion and a ring-like first flange;
the first flange extends from the base portion in a direction toward the terminal board;
the first groove penetrates the first flange.
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