| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system capable of appropriately correcting map data showing the correlation between AC impedance and water content. <P>SOLUTION: The fuel cell system is equipped with map data 94 showing the correlation between the AC impedance and the water content of a fuel cell; and a correction part 95 correcting an error of the map data 94 based on the water content calculated by income and expense calculation and actual measurements of AC impedance of the fuel cell. A dead zone region where an AC impedance value does not vary when the water content exceeds a prescribed value is present in the correlation between the AC impedance and the water content. Since a value of the AC impedance becomes almost constant independent of the water content in the dead zone region, the correction part 95 utilizes the dead zone characteristics and can accurately correct the map data even when the estimated accuracy of the water content is low. <P>COPYRIGHT: (C)2009,JPO&INPIT |
