| 摘要 |
PROBLEM TO BE SOLVED: To suppress the insufficient charging of a storage battery and to prevent the decrease of the capacity of a storage battery occurring due to the fact that between a power generation source and the storage battery becomes an open state by an induction lightning surge, etc., a power supply system from being interrupted in a power supply system for power generating to convert a natural energy, such as a solar light power generation, etc. into a power. SOLUTION: The power supply system for supplying a power to a load by the storage battery by charging the storage battery by a power generation source for converting the natural energy, such as a solar light, a wind power, a wave power, a tide power, etc. into the power. The power supply system includes a main power generation source. The power from this main power generation source is charged in the storage battery through a charge control circuit. The charge control circuit opens a charge circuit when the voltage of the storage battery at the charging time is raised to a first set voltage (V<SB>1</SB>), stops charging from the main power generation source, closes the charge circuit when the voltage of the storage battery is lowered to a second set voltage (V<SB>2</SB>), and charges. The power supply system also includes a sub-power generation source of low output rather than the main power generation source. The sub-power generation source is connected to the storage battery in parallel with the charge control circuit without intermediary of the charge control circuit. COPYRIGHT: (C)2005,JPO&NCIPI
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