| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel cell system which can eliminate moisture inside the fuel cell after its operation is stopped in a fuel cell system used under a low temperature condition. SOLUTION: After a normal operation of a fuel cell 10 is stopped, dry oxygen is supplied to an oxygen electrode of the fuel cell 10 and dry hydrogen to a hydrogen electrode. Each output voltage of a plurality of cells structuring the fuel cell 10 is detected by a cell monitor 13, based on which, wet condition inside the fuel cell 10 is detected indirectly then at least dry hydrogen supply is controlled according to the wet condition inside the fuel cell 10. After the supply of the dry hydrogen is stopped, dry air heated higher than the temperature inside the fuel cell 10 is supplied to the oxygen electrode. |
