Fuel cell system and control method therefor

Details Fuel cell system and control method therefor Fuel cell system and control method therefor

2005-04-04

2010-10-19

Mayes, Melvin C (Department: 1793)

Chemistry: electrical current producing apparatus, product, and

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

Process or means for control of operation

C429S061000, C429S090000, C429S050000, C429S502000, C429S091000, C429S429000, C700S296000, C700S299000

Reexamination Certificate

active

07816045

ABSTRACT:
A fuel cell system including a fuel cell stack is capable of raising the temperature of a fuel cell stack to a predetermined temperature within a short time without decreasing methanol fuel utilization efficiency. During system startup, the concentration of methanol aqueous solution which is to be supplied to the fuel cell stack is detected by a concentration sensor, and the temperature of the fuel cell stack is detected by a temperature sensor. A target concentration of methanol aqueous solution is determined by making reference to data stored in a memory, which indicates correspondence between the temperature of the fuel cell stack and the target concentration of methanol aqueous solution, and based on the temperature of the fuel cell stack detected by the temperature sensor.

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