| 摘要 |
PROBLEM TO BE SOLVED: To provide a charging device for charging a rechargeable battery at a time less than output from a photovoltaic panel which cannot generate power due to cloudy weather or from wind power generation under a weak wind force, a charging method, a high-efficiency power generation and supply system which is available all the time, and a residual stored power amount measuring method thereof.SOLUTION: The charging device comprises: a low voltage detector which is connected between a power conditioner (PCS) of a power generation system effectively utilizing natural energy and a rechargeable battery, detects an operational voltage range of the PCS, and determines that the operational voltage is equal to or lower than a predetermined value; and a relay with a contact for not electrically connecting an input-side DC circuit of the PCS and the rechargeable battery when the operational voltage exceeds the predetermined value, but electrically connecting the input-side DC circuit of the PCS and the rechargeable battery when it is determined that the operational voltage is equal to or lower than the predetermined value. The charging device is capable of providing a high-efficiency power supply system which is available all the time in combination with a charging/discharging amount measuring section for residual capacitance value confirmation of the rechargeable battery. |
