| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system capable of recovering cell voltage while preventing degradation of fuel efficiency performance when the cell voltage of a fuel cell stack falls. <P>SOLUTION: A control unit 32 reads and determines the cell voltage of the fuel cell stack 2 detected by a cell voltage sensor 22. According to the determination result of the cell voltage, the control unit 32 increases the amount of hydrogen circulation by a hydrogen circulation pump 6 or opens a purge valve 7 to discharge gas in a hydrogen circulation path to the outside of a system. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
