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1.发明公开
公开(公告)号：EP1659653A4
公开(公告)日：2008-09-17
申请号：EP04772414
申请日：2004-08-24
发明人： MORITA JUNJI , UCHIDA MAKOTO , SUGAWARA YASUSHI , URATA TAKAYUKI , KOSAKO SHINYA , UMEDA TAKAHIRO , SHIBATA SOICHI , TSUJI YOICHIRO , OZEKI MASATAKA , NAKAMURA AKINARI , TANAKA YOSHIKAZU
CPC分类号： H01M8/0606 , H01M8/04231 , H01M8/04365 , H01M8/04388 , H01M8/04395 , H01M8/04425 , H01M8/04559 , H01M8/04649 , H01M8/04746 , H01M8/04776 , H01M8/04955 , H01M2008/1095
摘要： A fuel cell system is disclosed which enables to stabilize performance of a fuel cell and appropriately handles problems such as drying acceleration of an electrolyte membrane and local reactions. Disclosed is a fuel cell system comprising a fuel cell (121) for generating electric power from a fuel gas and an oxidant, a fuel gas supplying means, an oxidant gas supplying means, a raw material gas supplying means including a raw material gas supplying pipe (151) and a third switching valve (143) for supplying a raw material gas to the fuel cell, and a control unit (127). Before supplying the fuel gas and the oxidant gas to the fuel cell (121) when power generation by the fuel cell (121) is started, the raw material gas supplying means purges at least the cathode side of the fuel cell (121) with the raw material gas.
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公开(公告)号：EP1487042A4
公开(公告)日：2007-09-19
申请号：EP03712724
申请日：2003-03-18
发明人： MIYAUCHI SHINJI , UEDA TETSUYA , HARADA TERUMARU , OZEKI MASATAKA , YAMAMOTO MASAO , NAKAMURA AKINARI , TANAKA YOSHIKAZU
CPC分类号： H01M8/04022 , H01M8/04007 , H01M8/04029 , H01M8/04052 , H01M8/04268 , H01M8/04365 , H01M8/0612 , H01M8/0668
摘要： It has been conventional that, when abnormality occurs in a device, the conditional operation of the device is further continued while neglecting the abnormality temporarily on condition that remedial action taken later by service staff. There has been no simple method to quickly remove slight failures, etc. included in the abnormality. A fuel cell power generation system comprises a fuel cell (21), fuel gas supply means (22), oxidizing agent gas supply means (34), condition detection means (42) for measuring the temperature of the fuel gas supply means (22), operation control means (47) for detecting abnormality of a specific function of the fuel cell supply means (22) using the result of detection by the condition detection means (42) and conducting operation control in an operation mode corresponding to the content of the abnormality, and operation mode switching means (44) for switching the operation mode to a mode corresponding to the content of the abnormality.
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3.发明公开
公开(公告)号：EP1659652A4
公开(公告)日：2008-09-17
申请号：EP04772400
申请日：2004-08-24
发明人： SUGAWARA YASUSHI , OZEKI MASATAKA , NAKAMURA AKINARI , TANAKA YOSHIKAZU , URATA TAKAYUKI , KOSAKO SHINYA , MORITA JUNJI , SHIBATA SOICHI , UCHIDA MAKOTO , UMEDA TAKAHIRO , TSUJI YOICHIRO
CPC分类号： H01M8/0606 , H01M8/04231 , H01M8/04365 , H01M8/04388 , H01M8/04395 , H01M8/04425 , H01M8/04559 , H01M8/04649 , H01M8/04746 , H01M8/04776 , H01M8/04955 , H01M2008/1095
摘要： Durability of a fuel cell sometimes decreases due to deterioration of the catalyst when the fuel cell is stored for a long time. Disclosed is a fuel cell system comprising a stack (38) for generating electric power from a fuel gas and an oxidant, a fuel gas supplying means, an oxidant gas supplying means, a raw material gas supplying means including a raw material gas piping (33), a bypass pipe (55) and distributors (56, 60) for supplying a raw material of the fuel gas to a fuel cell, and a control unit (44). After power output of the fuel cell is turned off, the fuel gas supplying means stops supplying the fuel gas to the anode side of the fuel cell and the oxidant gas supplying means stops supplying the oxidant to the cathode side of the fuel cell, while the raw material gas supplying means supplies the raw material from the input side of the cathode of the fuel cell, thereby purging the cathode side of the fuel fell.
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