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:
Mar. 20, 2007
Filed:
Feb. 07, 2003
Tomas Dehne, Bornheim, DE;
Tomas Dehne, Bornheim, DE;
General Motors Corporation, Detroit, MI (US);
Abstract
A fuel cell stack comprising a plurality of fuel cells which are connected together. Each cell has an anode, a cathode, and a membrane therebetween and which are each arranged between two bipolar plates. The anode sides of the individual fuel cells have flow fields for a gaseous fuel supplied to the fuel cells extending between an anode space arranged at the top in the fuel cell stack and an anode space arranged at the bottom of the fuel cell stack. A collecting container is provided in the anode space arranged at the bottom of the fuel cell stack for water which is produced during the electrochemical reaction and is present in the form of a liquid and the water which is collected there has an evaporation surface and serves for the humidification of the fuel fed to the fuel cell stack.