System for controlling the operating temperature of a fuel cell

Details System for controlling the operating temperature of a fuel cell System for controlling the operating temperature of a fuel cell

2006-06-06

2006-06-06

Tsang-Foster, Susy (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000

Reexamination Certificate

active

07056611

ABSTRACT:
A method and system are provided for improved control of the operating temperature of a fuel cell (32) utilizing an improved temperature control system (30) that varies the flow rate of inlet air entering the fuel cell (32) in response to changes in the operating temperature of the fuel cell (32). Consistent with the invention an improved temperature control system (30) is provided that includes a controller (37) that receives an indication of the temperature of the inlet air from a temperature sensor (39) and varies the heat output by at least one heat source (34, 36) to maintain the temperature of the inlet air at a set-point Tinset. The controller (37) also receives an indication of the operating temperature of the fuel cell (32) and varies the flow output by an adjustable air mover (33), within a predetermined range around a set-point Fset, in order to maintain the operating temperature of the fuel cell (32) at a set-point Topset.

REFERENCES:
patent: 4859545 (1989-08-01), Scheffler et al.
patent: 6136462 (2000-10-01), Kriechbaum et al.
patent: 6186254 (2001-02-01), Mufford et al.
patent: 6306531 (2001-10-01), Clingerman et al.
patent: 6368737 (2002-04-01), Margiott et al.
patent: 6461751 (2002-10-01), Boehm et al.
patent: 2002/0168556 (2002-11-01), Leboe et al.
patent: 07-161371 (1995-06-01), None
IPDL JPO Machine Translation for JP 07-161371 A (publication date of Jun. 1995).

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