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End plate assembly having a two-phase fluid-filled bladder and method for compressing a fuel cell stack

United States Patent

March 13, 2001
View the Complete Patent at the US Patent & Trademark Office
An end plate assembly is disclosed for use in a fuel cell assembly in which the end plate assembly includes a housing having a cavity, and a bladder receivable in the cavity and engageable with the fuel cell stack. The bladder includes a two-phase fluid having a liquid portion and a vapor portion. Desirably, the two-phase fluid has a vapor pressure between about 100 psi and about 600 psi at a temperature between about 70 degrees C. to about 110 degrees C.
Carlstrom, Jr.; Charles M. (Clifton Park, NY)
Plug Power Inc. (Latham, NY)
09/ 371,818
August 11, 1999
STATEMENT OF GOVERNMENT RIGHTS The Government of the United States of America has rights in this invention pursuant to Contract No. DE.FCOI.97EE50472 awarded by the U.S. Department of Energy.