To surely remove condensed water in a discharge valve when a fuel cell system is stopped.
The fuel cell system includes a fuel cell 1 for generating power by supplying a reaction gas, a first circulation passage L2 again returning the reaction gas discharged from the fuel cell 1 to the fuel cell 1, a circulation pump 8 for circulating the reaction gas in the first circulation passage L2, water-removing means 6, 7 for discharging moisture included in the reaction gas which flows in the first circulation passage L2, a discharge valve 9 for discharging the reaction gas in the first circulation passage L2, a discharge passage L5 for connecting between the discharge valve 9 and the first circulation passage L2, and a second circulation passage L3 for connecting between the discharge passage L5 and an upstream section of the circulation pump 8 in the first circulation passage L2. The fuel cell system circulates the reaction gas to the first circulation passage L2 and the second circulation passage L3 by driving the circulation pump 8.
COPYRIGHT: (C)2010,JPO&INPIT
Ken Nakayama
Shinichiro Takemoto
Holy Holy
Hara Satoshi
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