| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system capable of diagnosing abnormality of an internal state of one part of a fuel cell. <P>SOLUTION: Respective impedances of plural cell groups B1-Bn formed by dividing plural unit cells 10 into plural blocks in a lamination direction are calculated. When the cell groups having an impedance exceeding a predetermined threshold exist among the plural cell groups B1-Bn, it is diagnosed that lack of gas occurs in the fuel cell 1. Furthermore, when the number of the cell groups having an impedance exceeding the predetermined threshold is not more than a reference number among the plural cell groups B1-Bn, it is diagnosed that lack of gas occurs to one part of the fuel cell 1. When the number of the cell groups having an impedance exceeding the predetermined threshold exceeds the number of the cell groups, it is diagnosed that lack of gas occurs to the entire fuel cell 1. <P>COPYRIGHT: (C)2013,JPO&INPIT |
