Patent ID: 6346344
Filing Date: 2002-02-12
Classification: H01M,Y02E,Y02P

Abstract:
A circuit breaker for a secondary battery comprising a can and a cap assembly mounted on the can, the cap assembly comprising a plate and a circuit breaker disposed under the plate, the circuit breaker comprising:a first portion for attaching to the plate; a second portion formed around the first portion; a third portion connecting the first portion to the second portion, the third portion being broken by a predetermined level of pressure; and a centrally formed opening, a bridge formed across the centrally formed opening and notches respectively formed on both ends of the bridge, with the first portion comprising a portion of the bridge, the third portion comprising the notches, and the second portion comprising a remaining portion of the circuit breaker, the remaining portion being a portion of the circuit breaker other than the first portion and the third portion.