| 摘要 |
PROBLEM TO BE SOLVED: To provide a chargeable power supply apparatus which is capable of charging and discharging, even if the input voltage from an external power supply apparatus is lower than the voltage required for charging a chargeable/dischargeable storage battery. SOLUTION: This power supply apparatus is equipped with a boosting part 3 whose circuit is constituted, to enable the boosting of the voltage of the external power source 2, and it accumulates voltage higher than the input voltage of the external power source 2 into the chargeable/dischargeable storage battery 4 via the boosting part 3. The boosting part 3 includes electric double-layer capacitors 6 and 7, which can be connected in parallel with an external power source 2, and this power unit charges either of the electric double-layer capacitor 6 or 7 at all times, from the external power source 1. The electric double-layer capacitors 6 and 7 are arranged in series with the storage battery 4, and also the opposite side of the storage battery 4 is grounded. COPYRIGHT: (C)2004,JPO
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