| US 7,482,076 B2 | ||
| Fuel cell stack humidification method incorporating an accumulation device | ||
| Ralf Senner, Wiesbaden (Germany); and Rittmar Von Helmolt, Mainz (Germany) | ||
| Assigned to General Motors Corporation, Detroit, Mich. (US) | ||
| Filed on Jun. 10, 2005, as Appl. No. 11/149,688. | ||
| Application 11/149688 is a division of application No. 10/439588, filed on May 16, 2003, granted, now 6,921,601, filed on Jul. 26, 2005. | ||
| Prior Publication US 2005/0227127 A1, Oct. 13, 2005 | ||
| Int. Cl. H01M 8/04 (2006.01); H01M 8/02 (2006.01) | ||
| U.S. Cl. 429—17 [429/34; 429/39] | 3 Claims |
| 1. A method for operating a fuel cell having at least two openings for fuel gas inlet and outlet, comprising:
supplying fuel gas to one of said at least two openings;
storing exiting fuel gas from the other of said at least two openings in an expansion reservoir;
switching the supply of fuel gas to said other of said at least two openings; and
introducing the stored exiting fuel gas to the supply of fuel gas going to said other of said at least two openings.
|