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. 22, 2016
Filed:
Jul. 11, 2013
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
John P. Nolan, Rochester, NY (US);
Daniel T. Folmsbee, Victor, NY (US);
Derek R. Lebzelter, Conneaut, OH (US);
Yan Zhang, Victor, NY (US);
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 8/06 (2016.01); H01M 8/04 (2016.01);
U.S. Cl.
CPC ...
H01M 8/04992 (2013.01); H01M 8/0432 (2013.01); H01M 8/04126 (2013.01); H01M 8/04507 (2013.01); H01M 8/04828 (2013.01); Y02E 60/50 (2013.01);
Abstract
A method and an apparatus to adapt the performance of a cathode humidification unit as a membrane in a fuel cell stack degrades over time. An algorithm compares a sensed humidity profile of the fuel cell stack and model humidity profile of a cathode humidification unit model to calculate a new degradation factor. The cathode humidification unit model uses the degradation factor in the performance of the cathode humidification unit.