Fuel cell system and freezing prevention method thereof

Details Fuel cell system and freezing prevention method thereof Fuel cell system and freezing prevention method thereof

2005-05-31

2005-05-31

Ryan, Patrick Joseph (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C429S010000, C429S006000, C429S006000, C429S006000, C429S006000

Reexamination Certificate

active

06899969

ABSTRACT:
In a fuel cell system, a temperature sensor detects an internal temperature of a fuel cell. A cooling water pump is controlled so that it is stopped when the internal temperature of the fuel cell is equal to or lower than 0 degrees. A driving amount of the cooling water pump increases according to a rise in internal temperature of the fuel cell when the internal temperature is higher than 0 degrees. A degree of increase in driving amount is restrained when the internal temperature of the fuel cell is between 0 degrees and a predetermined temperature higher than 0 degrees.

REFERENCES:
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patent: 6713729 (2004-03-01), Takeo et al.
patent: 198 25 286 (1998-12-01), None
patent: 199 45 715 (2001-04-01), None
patent: 6-223855 (1994-08-01), None
patent: WO 00/74163 (2000-12-01), None

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