发明申请
US20070172708A1 Fuel cell system failure diagnosis method, failure diagnosis device using same, and fuel cell system
审中-公开
燃料电池系统故障诊断方法，故障诊断装置及燃料电池系统
- 专利标题： Fuel cell system failure diagnosis method, failure diagnosis device using same, and fuel cell system
- 专利标题（中）： 燃料电池系统故障诊断方法，故障诊断装置及燃料电池系统
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申请号： US10592500申请日： 2005-03-11
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公开(公告)号： US20070172708A1公开(公告)日： 2007-07-26
- 发明人: Yasuo Takebe , Makoto Uchida
- 申请人： Yasuo Takebe , Makoto Uchida
- 优先权： JP2004-071282 20040312
- 国际申请： PCT/JP05/04365 WO 20050311
- 主分类号： H01M8/04
- IPC分类号： H01M8/04 ; H01M8/06 ; G01R31/02
摘要：
It was difficult to specify a portion which is a cause of a power generation abnormality of a fuel cell which performs the power generation by feeding an oxygen-containing oxidizer gas into a cathode and feeding a hydrogen-containing fuel gas into an anode. A failure diagnosis method of a fuel cell system, which includes a step for computing an impedance in a prescribed portion of a fuel cell of a fuel cell system from a signal obtained by superposing an alternating current on a direct current as generated from the fuel cell system under a certain operation condition, wherein when in comparison of the impedance with an impedance as computed under a previously determined standard operation condition, an abnormality is present in the prescribed portion of the fuel cell, whether a cause of the abnormality of the prescribed portion resides in any one or plural prescribed sites constituting the fuel cell system is determined by using the comparison result.
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