| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system capable of suppressing dryness of an electrolyte more suitably as compared with a conventional system, an operation method of a fuel cell and a method for estimating a dryness degree of the electrolyte. <P>SOLUTION: A supply flow rate of hydrogen gas to be supplied to a fuel cell is temporarily increased (step S240). Then whether a temporary change (ΔP) of anode pressure loss when the supply flow rate of hydrogen gas is temporarily increased is zero or more is determined (step S250). When the ΔP is positive, the ΔP is detected (step S250, YES) and cathode back-pressure is set to P2 (step S260) to intensify dryness suppression of an electrolyte membrane. <P>COPYRIGHT: (C)2012,JPO&INPIT |
