| 摘要 |
In a charging control method and apparatus which can improve the operating efficiency of a power generation system and prolong the service life of an accumulation unit, a short-circuit switch is closed, and a current generated in a solar cell is charged in the accumulation unit in a charging state. With this charging, the terminal voltage of the accumulation unit rises. This voltage is detected by a detection unit and is loaded into a control unit. When the detected voltage rises to a predetermined voltage, the short-circuit switch is closed by a short-circuit control signal. The output current from the solar cell is then discharged to the ground, and charging is stopped. In this state, the control unit determines the connected state of a load from an output signal from the detection unit. When the closed state of the short-circuit switch is determined from an output signal from a detection unit, the control unit switches the short-circuit switch to an open state even if the voltage of the accumulation unit has not reached a charging start voltage. With this switching operation, discharging of an output current from the solar cell to the ground is stopped, and the output current from the solar cell is output to the accumulation unit and the load.
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