| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system capable of correctly executing impedance measurement even after intermittent operation. <P>SOLUTION: The fuel cell system 10 includes: a fuel cell stack 11; a hydrogen supply system for supplying hydrogen from a hydrogen tank 22; an oxidant gas supply system for supplying air serving as an oxidant by an air compressor; an electrical system including an impedance measuring unit 13 for measuring the impedance of a fuel cell, a DC/DC converter 14 for converting generated electric power, a secondary battery 15 for storing electric power, and so on; and a drive system 50 for driving a vehicle. When the power generation is stopped by turning off an ignition switch in the state in which the power generation is suspended in an intermittent operation, the impedance measuring unit 13 measures the impedance after the supply of air is stabilized to avoid the transient state of the unit cell of the fuel cell caused by a delay in air supply. <P>COPYRIGHT: (C)2009,JPO&INPIT |
