| 摘要 |
<P>PROBLEM TO BE SOLVED: To diagnose power generation condition of a plurality of power generation cells of a fuel cell with a simple structure and without giving an adverse effect to the power generation performance of the fuel cell. <P>SOLUTION: The fuel cell diagnosis device is provided with a pair of magnetic sensors 53, 54 which are arranged at two places around the outer periphery of power generation cells 10 and detect intensity of the magnetic field formed at the outer circumference of the fuel cell 1 by electric current flowing in the fuel cell 1, magnetic collectors 531, 541 which are arranged adjacent to the magnetic sensors 53, 54 at the outer periphery of the fuel cell 1, extend along the lamination direction of the plurality of power generation cells 10, and collect the magnetic field formed at the outer circumference of the plurality of power generation cells 10 to the magnetic sensors 53, 54, and a diagnosis means (control device) 50 which calculates deviation of current (magnetic force difference) in the cell surface of the plurality of power generation cells 10 by the detection value detected by the pair of magnetic sensors 53, 54, and diagnoses the power generation condition of the fuel cell 1 based on the deviation of current (magnetic force difference) calculated. <P>COPYRIGHT: (C)2011,JPO&INPIT |
