| 摘要 |
Provided is a secondary battery having a cap assembly, including an electrode assembly, a case into which the electrode assembly is inserted, and a terminal member having a cap plate coupled to the case to hermetically seal the case and a stepped protrusion, penetrating the cap plate to be riveted, insulated from the cap plate by an insulating member, and having a stepped protrusion on its head so as to press the insulating member in multiple steps, and the terminal member connected to a positive or negative electrode terminal of the electrode assembly.
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