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Hybrid power source

United States Patent

8,193,761
June 5, 2012
View the Complete Patent at the US Patent & Trademark Office
A hybrid power system is comprised of a high energy density element such as a fuel-cell and high power density elements such as a supercapacitor banks. A DC/DC converter electrically connected to the fuel cell and converting the energy level of the energy supplied by the fuel cell. A first switch is electrically connected to the DC/DC converter. First and second supercapacitors are electrically connected to the first switch and a second switch. A controller is connected to the first switch and the second switch, monitoring charge levels of the supercapacitors and controls the switching in response to the charge levels. A load is electrically connected to the second switch. The first switch connects the DC/DC converter to the first supercapacitor when the second switch connects the second supercapacitor to the load. The first switch connects the DC/DC converter to the second supercapacitor when the second switch connects the first supercapacitor to the load.
Singh; Harmohan N. (Rockaway, NJ)
Honeywell International, Inc. (Morristown, NJ)
11/ 937,341
November 8, 2007
GOVERNMENT RIGHTS This invention was made with Government support under Collaborative Technology Alliances Power & Energy Consortium contract DAAD19-01-2-0010 awarded by the Army Research Lab. The Government has certain rights in this invention.