SHORT CIRCUIT-HEAT GENERATION PROTECTING CIRCUIT FOR STORAGE BATTERY

摘要

PURPOSE:To make it possible to discharge a storage battery without waiting the automatic reset of a thermal switch after its operation by connecting a device in which a thermal fuse which blows at a temperature higher than that operating an automatic reset thermal switch and a diode are connected in series to the automatic reset thermal switch in parallel. CONSTITUTION:A protecting circuit in which a circuit formed by connecting in series a diode 3 and a thermal fuse 2 having an operation temperature of 81 deg.C or more and a thermal switch 1 whose operation temperature is 50-80 deg.C and resetting temperature is less than 50 deg.C are connected in parallel is connected to a storage battery in series. Even after the thermal switch 1 was operated by abnormal temperature-increase in charging of a battery and short circuit between terminals of the storage battery, it is possible to discharge the battery through the circuit comprising the thermal fuse 2 and the diode 3 without waiting the automatic reset of the thermal switch 1 which is operated after the battery was cooled.