The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 05, 2011
Filed:
Jun. 24, 2004
Scott Dewey, Dansville, NY (US);
Clark G. Hochgraf, Rochester, NY (US);
Victor W. Logan, Naples, NY (US);
John Wheat, Rochester, NY (US);
David B Ouwerkerk, Torrance, CA (US);
Scott Dewey, Dansville, NY (US);
Clark G. Hochgraf, Rochester, NY (US);
Victor W. Logan, Naples, NY (US);
John Wheat, Rochester, NY (US);
David B Ouwerkerk, Torrance, CA (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A fuel cell system that includes a fuel cell stack providing high voltage power. A tap is electrically coupled to the positive end of the stack to provide a positive voltage output terminal of the fuel cell stack, and a tap is electrically coupled to the negative end of the stack to provide a negative output terminal of the fuel cell stack. A low voltage tap is electrically coupled to one or more intermediate bipolar plates of the stack to provide low voltage power. Several intermediate taps can be electrically coupled to the bipolar plates, where a center intermediate tap is designated a reference potential tap. A switching network switches the several voltage potentials to provide an AC signal.