| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply system allowing for an increase in a fuel economy improvement rate.SOLUTION: A power supply system 10 comprises: a main battery 1; a sub battery 2 constituted of a battery or a capacitor; a selector 5 for changing over charge/discharge current of the main battery 1 and the sub battery 2; and a control unit 6 for controlling the selector 5's current changeover operation. The control unit 6 controls, in receiving regenerative power from an alternator 12 by using a power storage devices, the selector 5 so as to, first, charge the sub battery 2 and, next, charge the main battery 1, and controls, in discharging power from the power storage devices to a discharge load 14, the selector 5 so as to, first, discharge power from the sub battery 2 to the discharge load 14 and, next, discharge power from the main battery 1 to the discharge load 14. |
