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Fuel cell generator energy dissipator

United States Patent

6,025,083
February 15, 2000
View the Complete Patent at the US Patent & Trademark Office
An apparatus and method are disclosed for eliminating the chemical energy of fuel remaining in a fuel cell generator when the electrical power output of the fuel cell generator is terminated. During a generator shut down condition, electrically resistive elements are automatically connected across the fuel cell generator terminals in order to draw current, thereby depleting the fuel inventory in the generator. The invention provides a safety function in eliminating the fuel energy, and also provides protection to the fuel cell stack by eliminating overheating.
Veyo; Stephen Emery (Murrysville, PA), Dederer; Jeffrey Todd (Valencia, PA), Gordon; John Thomas (Ambridge, PA), Shockling; Larry Anthony (Pittsburgh, PA)
Siemens Westinghouse Power Corporation (Orlando, FL)
09/ 030,316
February 25, 1998
GOVERNMENT CONTRACT The Government of the United States of America has certain rights in this invention pursuant to Contract No. DE-FC21-91MC28055 awarded by the U.S. Department of Energy.