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:
May. 13, 2014
Filed:
Feb. 06, 2008
Sriram Ganapathy, Rochester, NY (US);
Kiran Mallavarapu, Honeoye Falls, NY (US);
Balasubramanian Lakshmanan, Pittsford, NY (US);
John P. Salvador, Penfield, NY (US);
Frank X. Leo, Honeoye Falls, NY (US);
Sriram Ganapathy, Rochester, NY (US);
Kiran Mallavarapu, Honeoye Falls, NY (US);
Balasubramanian Lakshmanan, Pittsford, NY (US);
John P. Salvador, Penfield, NY (US);
Frank X. Leo, Honeoye Falls, NY (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method for providing a current density set-point for a fuel cell stack in response to a power request from the stack where the set-point is determined based on system parameters that identify the life and degradation of the stack. The method includes dividing a current density range of the fuel cell stack into a predetermined number of sample regions, and selecting the sample regions in order from low to high during the current set-point analysis. The method calculates an average cell voltage for the current density of the selected sample region, and stack power from the average cell voltage. The method then determines whether a power request signal is less than the stack power for the selected sample region and greater than the calculated power for the previous sample region, and if so, calculates the current density set-point at the requested power based on these values.