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. 26, 2005
Filed:
May. 16, 2003
Applicants:
Ralf Senner, Wiesbaden, DE;
Rittmar Von Helmolt, Mainz, DE;
Inventors:
Ralf Senner, Wiesbaden, DE;
Rittmar Von Helmolt, Mainz, DE;
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M008/02 ; H01M008/04 ;
U.S. Cl.
CPC ...
Abstract
A method of fuel cell stack humidification is provided incorporating the use of an accumulation device. The method provides for feeding back humid anode exhaust gas of the fuel cell stack to the fuel cell inlet and switching the anode inlet and outlet of the fuel cell stack for achieving better homogeneity of humidity along the fuel cell channels.