| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent that a fuel cell becomes in excessively reduced pressure state and the stack of the fuel cell 1a becomes uneven reduced pressure state, when the fuel cell generates power with a supply valve and an exhaust valve in closed state (fuel shut-off state) and the communicated fuel cell and a water pool part become in reduced pressure state, by a structure of low cost and a high freedom of piping design. <P>SOLUTION: The fuel cell 1b and a container (water pool part) 7b are communicated by a tube passage of at least two piping 63a, 63b, and when the fuel cell 1b generates power with a supply valve 4 and an exhaust valve 8 in closed state, and the fuel cell 1b and the container 7b communicated become in reduced pressure state, the ventilation resistance of the tube passage between the fuel cell 1b and the container 7b becomes smaller than the case of one piping, and the fuel cell 1b is prevented from becoming in excessively reduced pressure state. Thereby, it is prevented that the fuel cell 1b becomes in excessively reduced pressure state and the inside of the stack of the fuel cell 1b becomes in uneven reduced pressure state. <P>COPYRIGHT: (C)2009,JPO&INPIT |
