Fuel cell system and fuel cell starting method

Details Fuel cell system and fuel cell starting method Fuel cell system and fuel cell starting method

2005-06-15

2009-11-24

Ryan, Patrick (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S010000

Reexamination Certificate

active

07622209

ABSTRACT:
The present invention provides a system in which a fuel cell can be operated using a fuel having a constantly optimum concentration and the time taken to start the fuel cell is shortened. A low-concentration fuel for performing a power generation reaction and a high-concentration fuel for performing the power generation reaction and a reaction for raising the temperature of a power generation cell are stored respectively in separate storage vessels. The fuel supplied to a negative electrode can be instantaneously changed over according to the temperature of the power generation cell. This makes it possible to perform an operation at a constantly optimum fuel concentration. By having the capability to raise the power generation cell temperature in a short time, it is possible to reduce the capacity of an auxiliary battery used when power generation cell temperature is low, and to reduce the fuel cell system in size.

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