Power feeding apparatus for solar cell, and solar cell system

A power feeding apparatus for solar cells for adjusting an input voltage inputted from a solar cell to a predetermined voltage or less and outputting the adjusted voltage as a charging output voltage of a secondary battery, comprising:

• a voltage adjustment unit for subjecting the input voltage to a voltage adjustment and outputting a voltage adjusted to a voltage set in advance or less;
• a switching unit that is provided in a bypass line connected between a power input terminal and a power output terminal without being routed to the voltage adjustment unit, and that switches the connection and disconnection of the bypass line;
• and
• a control unit configured, when the input voltage is equal to or lower than the predetermined voltage, to control the switching unit to connect the bypass line to output the input voltage from the power output terminal;
• wherein the power feeding apparatus includes a second signal generation unit configured, when the input voltage is higher than the second predetermined voltage, to output a second signal having a high level to the control unit, and
• the control unit stops the current output from the power output terminal when a predetermined time has passed since the second signal having the high level was outputted.