Patent ID: 8232002

Claim:
A sealed battery, comprising: a battery outer can containing an electrode assembly inside thereof; an opening-sealing plate fixed at an opening portion of the battery outer can in an encapsulated state; and an external terminal attached to the opening-sealing plate and electrically-connected to a collector of the electrode assembly; wherein, the external terminal having a sword-guard portion being provided with a terminal portion formed at one end thereof and a cylindrical crimping member formed at another end thereof, the cylindrical crimping member being inserted through openings each formed at a first insulator, the opening-sealing plate, a second insulator and the collector, and being crimped in a diameter-enlarging direction, so that the sword-guard portion of the external terminal, the opening-sealing plate and the collector are mechanically-fixed and a thin-walled portion made thinner than other portions formed in a tip portion of the cylindrical crimping member is adhered to the collector, and the thin-walled portion and the collector being welded with a high energy beam.