FUEL BATTERY SYSTEM
To provide a fuel battery system capable of improving accuracy of performance degradation determination of a fuel battery.SOLUTION: A fuel battery 10 is made of a plurality of laminated fuel battery 10 cells for generating power when fuel gas and oxidant gas are supplied to one surface and the other...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | To provide a fuel battery system capable of improving accuracy of performance degradation determination of a fuel battery.SOLUTION: A fuel battery 10 is made of a plurality of laminated fuel battery 10 cells for generating power when fuel gas and oxidant gas are supplied to one surface and the other surface of an MEA including an electrolyte membrane, respectively. An impedance detection section 34 detects an impedance value of the fuel battery 10 when a predetermined high frequency wave is applied to the fuel battery 10. A voltage detection section 31 detects a voltage value output by the fuel battery 10. An ECU 100 as a battery deterioration detection section detects deterioration of the fuel battery 10 on the basis of relation between an impedance value at the time of the fuel battery 10 performing predetermined low load power generation and a voltage value at this time.SELECTED DRAWING: Figure 6
【課題】燃料電池の性能劣化判定の精度を向上することの可能な燃料電池システムを提供する。【解決手段】燃料電池１０は、燃料ガスと酸化剤ガスがそれぞれ電解質膜を含めたＭＥＡの一方の面と他方の面に供給されて発電する複数の燃料電池１０セルが積層されて構成されている。インピーダンス検出部３４は、燃料電池１０に所定の高周波を印加したときの燃料電池１０のインピーダンス値を検出する。電圧検出部３１は、燃料電池１０が出力する電圧値を検出する。電池劣化検出部としてのＥＣＵ１００は、燃料電池１０が所定の低負荷発電を行う時のインピーダンス値とその時の電圧値との関係に基づいて燃料電池１０の劣化を検出する。【選択図】図６ |
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