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:
Nov. 09, 2010
Filed:
Aug. 24, 2006
Josef Kallo, Stuttgart, DE;
Kilian Simbeck, Berlin, DE;
Peter Kilian, Heidelberg, DE;
Oliver Maier, Worms, DE;
Manish Sinha, Pittsford, NY (US);
Steven D. Burch, Honeoye Falls, NY (US);
John P. Salvador, Penfield, NY (US);
Josef Kallo, Stuttgart, DE;
Kilian Simbeck, Berlin, DE;
Peter Kilian, Heidelberg, DE;
Oliver Maier, Worms, DE;
Manish Sinha, Pittsford, NY (US);
Steven D. Burch, Honeoye Falls, NY (US);
John P. Salvador, Penfield, NY (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A system and method for reducing RH cycling of the membranes in a fuel cell stack. A control algorithm damps a power request signal using a first order filter during low power transients so that the fuel cell stack continues generating power at a higher rate than is requested. The excess power generated by the stack is used to recharge a battery in the fuel cell system. The damped power signal is weighted so that more fuel cell stack power is provided for a low battery state of charge unless stack power is provided for a high battery state of charge.