METHOD FOR CONTROLLING FUEL CELL HUMIDIFICATION AND FUEL CELL SYSTEM
PROBLEM TO BE SOLVED: To quickly and successfully control a humidification state of a fuel cell.SOLUTION: A method for controlling humidification of a fuel cell 14 comprises the steps of: measuring an impedance of the fuel cell 14 (measuring step); and adjusting an amount of humidification of the fu...
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| Sprache: | eng ; jpn |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To quickly and successfully control a humidification state of a fuel cell.SOLUTION: A method for controlling humidification of a fuel cell 14 comprises the steps of: measuring an impedance of the fuel cell 14 (measuring step); and adjusting an amount of humidification of the fuel cell 14 on the basis of an imaginary axis value Xi and a real axis value Xr on a complex plane of the measured impedance after the measuring step (adjusting step). The measuring step can easily measure the impedance on the basis of supply of AC current composed of one frequency of not more than 10 Hz during power generation of the fuel cell 14, thereby enabling quick and successful control of the humidification state of the fuel cell.
【課題】燃料電池の湿潤状態を迅速且つ良好に制御する。【解決手段】燃料電池１４の加湿制御方法は、燃料電池１４のインピーダンスを測定する測定工程と、測定工程後に、測定したインピーダンスの複素平面上の虚軸値Ｘｉ及び実軸値Ｘｒに基づき燃料電池１４の加湿量を調整する調整工程とを有する。測定工程では、燃料電池１４の発電中に、１０Ｈｚ以下の１つの周波数で構成される交流電流の供給に基づきインピーダンスを測定する。これにより、燃料電池１４のインピーダンスの測定が簡単に行われ、その湿潤状態を迅速且つ良好に制御することができる。【選択図】図１ |
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