Battery pack containing a circuit breaker

摘要

The battery pack has batteries, a printed circuit board with battery protection circuit components mounted on it, and a circuit breaker contained in a case. The circuit breaker switches off if excessive current flows in the batteries, or if battery temperature exceeds a specified temperature. The circuit breaker has a plurality of solder terminals attached to its casing, and one or a plurality of the solder terminals are attached to the printed circuit board by solder re-flow. The printed circuit board is connected to the batteries via leads and is disposed in a fixed position inside the case. The circuit breaker is mounted in a fixed position inside the case via the printed circuit board.