CAPACITY LEVELING CIRCUIT FOR GROUP BATTERY

摘要

PROBLEM TO BE SOLVED: To improve the reliability of a system leveling the capacities of unit batteries making up a group battery. SOLUTION: Voltage dividing circuits P1-P3 are provided between GND line linked to a battery B and the positive electrode side terminal of each of unit cells C1 to C3, while forced discharging circuits D1 to D3 are provided between the positive electrode side output line of the battery B and the positive electrode side terminal of the unit cells C1 to C3. The discharging amount of each unit battery by each forced discharging circuit D1 to D3 is equalized to that of each unit battery by each of the voltage dividing circuits P1 to P3 so that the capacity of each unit battery can be leveled.