| 摘要 |
A fuel cell system has an oxidizer gas flow rate adjuster (5) that adjusts a flow rate of oxidizer gas of the fuel cell stack (1) and a controller (10) that determines a humidity state in the fuel cell stack (1). The controller (10) has an average cell voltage calculator (13) that calculates an average cell voltage, a minimum cell voltage calculator (14) that calculates a minimum cell value, a voltage difference calculator (15) that calculates a voltage difference between the average cell voltage and the minimum cell voltage, and a voltage comparator (16) that compares the absolute voltage difference with a preset value. The flow rate of the oxidizer gas is changed based on a comparison between the absolute voltage difference and the preset value, and then the humidity state in the fuel cell stack (1) is determined based on a change in the absolute voltage difference. |
