| 摘要 |
An aspect of the present invention provides a fuel cell system that includes a fuel cell configured to receive a fuel gas and an oxidant gas, electrochemically react the fuel gas with oxidant gas to generate electric power, an internal load configured to be electrically connectable to the fuel cell and consume the electric power generated by the fuel cell, a switch configured to electrically connect and disconnect the internal load with the fuel cell, a voltage detector configured to detect a voltage of the fuel cell, a shutdown controller configured to, when the fuel cell system is stopped, connect the internal load with the fuel cell through the switch, the shutdown controller configured to stop the supply of the oxidant gas to the fuel cell, continue the supply of the fuel gas to the fuel cell, and consume oxygen remaining in the fuel cell to decrease the voltage of the fuel cell, a threshold changer configured to change a threshold value according to a state of the fuel cell system at the time of stoppage of the fuel cell system, and a disconnection controller configured to electrically disconnect the internal load from the fuel cell through the switch when the voltage of the fuel cell detected by the voltage detector decreases to or below the threshold value. |
