SECONDARY BATTERY

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.