Parallel stack antifreeze system

Details Parallel stack antifreeze system Parallel stack antifreeze system

2004-01-22

2009-02-03

Ryan, Patrick (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C429S006000, C429S010000, C429S006000, C429S006000, C429S006000

Reexamination Certificate

active

07485382

ABSTRACT:
A fuel cell stack antifreeze system that purges a plurality of fuel cell stacks connected in parallel includes a compressor that supplies pressurized cathode gas to each of the plurality of fuel cell stacks. A controller deactivates a first group of one or more of the plurality of fuel cell stacks and maintains operation of a second group of one or more of the plurality of fuel cell stacks. The second group powers the compressor and the compressor purges excess fluid from the first group using the pressurized cathode gas.

REFERENCES:
patent: 2001/0055707 (2001-12-01), Roberts et al.
patent: 2004/0053092 (2004-03-01), Kato et al.
patent: 2004/0175601 (2004-09-01), Faye et al.

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