Fuel cell system and its operation stop method

Details Fuel cell system and its operation stop method Fuel cell system and its operation stop method

2006-11-29

2011-11-29

Cantelmo, Gregg (Department: 1726)

Chemistry: electrical current producing apparatus, product, and

Fuel cell, subcombination thereof, or method of making or...

Process or means for control of operation

C429S429000, C429S433000, C429S442000

Reexamination Certificate

active

08067125

ABSTRACT:
A fuel cell system includes a fuel cell which has a catalyst layer therein and which receives supply of a reactive gas to generate power, and a refrigerant system which supplies a refrigerant to the fuel cell to control its temperature. A method for stopping an operation of the system is also provided. When operated in a low-temperature environment, the system cannot be restarted due to freezing in the fuel cell. When the temperature of the fuel cell during the next system start is a predetermined temperature or less, the supply of the refrigerant is stopped during the system stop, and the supply of the refrigerant is resumed after elapse of a predetermined time.

REFERENCES:
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EG&G Services, Fuel Cell Handbook, Oct. 2000, Fifth Edition, p. 1-5.

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