| 摘要 |
A secondary battery includes a can having an open end and housing an electrode assembly; a cap assembly sealing the open end of the can; and an insulating case located between the electrode assembly and the cap assembly, the insulating case comprising folding protrusions protruding from a peripheral surface of the insulating case and oriented such that a first side of the folding protrusion contacts the insulating case and a second side of the folding protrusion contacts the can. |
