| 摘要 |
A power supply device is provided with: secondary batteries 3a, 3b, 3c; power conversion units 4a, 4b, 4c for detecting the output current values from the secondary batteries connected and performing control for converting the DC powers from the secondary batteries 3a, 3b, 3c to AC powers so that the output current values become a target output current value; a power remaining amount detection unit 5 for detecting the power remaining amounts of the secondary batteries 3a, 3b, 3c; and an output current control unit 6 for measuring the holding times of the power remaining amounts of the secondary batteries 3a, 3b, 3c, calculating holding time conversion values of the respective secondary batteries 3a, 3b, 3c using the holding time and weighting factor of a set power remaining amount, calculating a total holding time conversion value that is the summation of the holding time conversion values of the secondary batteries 3a, 3b, 3c, calculating a total output current value that is the summation of the output current values of the secondary batteries 3a, 3b, 3c, and calculating the target output current value of the secondary batteries 3a, 3b, 3c using the total output current value, the holding time conversion values of the secondary batteries 3a, 3b, 3c, and the total holding time conversion value. |
