| 摘要 |
PROBLEM TO BE SOLVED: To reduce fluctuations of voltage of secondary battery, reduce the power consumption and also shorten the voltage compensating operation period, in a battery voltage compensating apparatus of a set-battery. SOLUTION: In a battery voltage compensating apparatus of a set-battery is connected in series, to both ends of the secondary battery 1, there are plural provided secondary batteries connect an on/off controllable discharging means 2 via a power feeding element 2b which turns off with the predetermined voltage, and a control unit 3 which detects a batter voltage to determine the secondary battery 1 which is required to conduct the discharge and cause the discharge means 2 to start the discharge by sending the on signal.
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