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Fuel cell membrane hydration and fluid metering

United States Patent

March 4, 2003
View the Complete Patent at the US Patent & Trademark Office
A hydration system includes fuel cell fluid flow plate(s) and injection port(s). Each plate has flow channel(s) with respective inlet(s) for receiving respective portion(s) of a given stream of reactant fluid for a fuel cell. Each injection port injects a portion of liquid water directly into its respective flow channel. This serves to hydrate at least corresponding part(s) of a given membrane of the corresponding fuel cell(s). The hydration system may be augmented by a metering system including flow regulator(s). Each flow regulator meters an injecting at inlet(s) of each plate of respective portions of liquid into respective portion(s) of a given stream of fluid by corresponding injection port(s).
Jones; Daniel O. (Glenville, NY), Walsh; Michael M. (Fairfield, CT)
Plug Power, Inc. (Latham, NY)
09/ 416,705
October 12, 1999
STATEMENT OF GOVERNMENT RIGHTS The Government of the United States of America has rights in this invention pursuant to Contract No. DE-AC02-94CE50389 awarded by the U.S. Department of Energy.