| 摘要 |
A secondary battery comprises a can into which an electrode assembly is inserted, a cap assembly mounted to an opening of the can; and an electrolyte injection hole formed on at least one of the can and cap assembly, and a safety member to close the electrolyte injection hole. The electrolyte injection hole is formed on a negative portion of the cap assembly. The safety member is inserted into and welded on the electrolyte injection hole.
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