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:
Aug. 28, 2007
Filed:
Feb. 24, 2005
Maximilian Danzer, Scheyern, DE;
Franz-josef Wetzel, Gernlinden, DE;
Xiaofeng Yan, Leonberg-Warmbronn, DE;
Thomas Hoefler, Munich, DE;
Bernd Kuhn, Echterdingen, DE;
Andreas Oswald Stoermer, Tuntenhausen, DE;
Olav Finkenwirth, Munich, DE;
Maximilian Danzer, Scheyern, DE;
Franz-Josef Wetzel, Gernlinden, DE;
Xiaofeng Yan, Leonberg-Warmbronn, DE;
Thomas Hoefler, Munich, DE;
Bernd Kuhn, Echterdingen, DE;
Andreas Oswald Stoermer, Tuntenhausen, DE;
Olav Finkenwirth, Munich, DE;
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Abstract
A fuel cell includes a cathode-electrolyte-anode unit, and a perforated foil structure distributes fuel gas over an electrode surface thereof. Longitudinal axes of at least some of the holes forming perforations in the foil are inclined differently relative to the foil surface such that, near a fuel gas feed, the outlet openings of the holes facing the electrode are oriented at least slightly toward the area of the fuel gas outlet from the fuel cell. Near a fuel gas outlet, the inlet openings of the holes facing the electrode are oriented at least slightly to the area of the fuel gas feed. However, holes whose inlet openings facing away from the electrode are oriented toward the fuel gas feed, and holes whose outlet openings facing away from the electrode are oriented toward the fuel gas outlet, may also be arranged alternately side-by-side.