| 摘要 |
PROBLEM TO BE SOLVED: To restrain the elution and deposition of an electrode catalyst, thereby restricting the degradation of catalyst performance regardless of the remaining capacity of a power storage device.SOLUTION: In a fuel cell system, a control device sets the output voltage of the fuel cell on the basis of requested output and also controls charging/discharging of a power storage device on the basis of the set output voltage and the requested output. When a requested voltage corresponding to the requested output is equal to or greater than a designated control start voltage V1 and equal to or less than an upper limit threshold V2 and a change in the requested voltage is on a climb gradient (Yes in steps S1 and S3), the output voltage is set to a lower voltage than the requested voltage (step S11) and the power storage device is charged until its remaining capacity exceeds a first designated value (step S13). When the change in the requested voltage changes from the climb gradient to a descent gradient (No in step S3), the output voltage is retained intact (step S21) and the power storage device is discharged until its remaining capacity becomes less than a second designated value (step S23) and, after the discharge is finished, the output voltage is set to a lower voltage than the control start voltage (step S27). |
