| 摘要 |
PROBLEM TO BE SOLVED: To provide a small-sized and lightweight fuel cell power generating device by providing a means for measuring the temperature of exhaust gas discharged from an air electrode and the output current value from a fuel cell, and regulating the opening of an exhaust valve on the basis of these values. SOLUTION: In a generating device using a fuel cell 10 having an air electrode and a fuel electrode arranged therein, an exhaust valve 16 is provided on an air discharge passage 14 of exhaust gas discharged from the air electrode. The opening of the exhaust valve 16 is determined by the correlation between the output current value of the fuel cell 10 and the exhaust gas temperature from the air electrode, and controlled by a control means (CPU) 17 so as to impart a water balance condition optimum to the fuel cell 10. This device has a temperature sensor 18 and an ammeter 19 for monitoring the exhaust gas temperature and the current value, and the opening of the exhaust valve 16 is controlled on the basis of the measured values. Thus, the fuel cell 10 can be operated under an optimum water balance condition determined by the correlation of cell temperature and gas flow rate without requiring the supply of water from the outside. |
