| 摘要 |
PROBLEM TO BE SOLVED: To charge a plurality of secondary batteries in a shorter time per secondary battery than charging them one by one, with the use of a power supply capable of supplying a current required to charge a single secondary battery.SOLUTION: Control means 14 controls a changeover switch S1 such that a constant voltage charging unit 12 charges a capacitor C1 and then constant-current-charges a secondary battery 30 connected to a secondary battery connection part 16, with a current supplied from a constant current charging unit 11, and subsequently constant-voltage-charges the secondary battery 30 with the charge of energy in the capacitor C1. The control means 14 controls a changeover switch S2 such that a constant voltage charging unit 13 charges a capacitor C2 and then constant-current-charges a secondary battery 30 connected to a secondary battery connection part 20 with a current supplied from the constant current charging unit 11 while the constant voltage charging unit 12 performs the constant voltage charge, and subsequently constant-voltage-charges the secondary battery 30 with the charge of energy in the capacitor C2. |
