Fuel cell power supply with oxidant and fuel gas switching

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United States of America Patent

PATENT NO 4657829
SERIAL NO

06453249

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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This invention relates to a fuel cell vehicular power plant. Fuel for the fuel stack is supplied by a hydrocarbon (methanol) catalytic cracking reactor and CO shift reactor. A water electrolysis subsystem is associated with the stack. During low power operation part of the fuel cell power is used to electrolyze water with hydrogen and oxygen electrolysis products being stored in pressure vessels. During peak power intervals, viz, during acceleration or start-up, pure oxygen and pure hydrogen from the pressure vessel are supplied as the reaction gases to the cathodes and anodes in place of air and methanol reformate. This allows the fuel cell stack to be sized for normal low power/air operation but with a peak power capacity several times greater than that for normal operation.

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Patent Owner(s)

  • UNITED TECHNOLOGIES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chludzinski, Paul J Swampscott, MA 2 213
Dantowitz, Philip Peabody, MA 4 277
McElroy, James F Hamilton, MA 62 2080

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