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:
Apr. 22, 2003
Filed:
Mar. 31, 2000
Norbert Berg, Darmstadt, DE;
Gerhard Filip, Kronberg, DE;
Bernd Kohlstruck, Neu-Anspach, DE;
Arnold Lamm, Thalfingen, DE;
AEG Energietechnik GmbH, Frankfurt, DE;
Abstract
The invention relates to a fuel cell system ( ) comprising an anode chamber ( ) and a cathode chamber ( ) which are separated from each other by a proton conducting membrane ( ). When the fuel cell system is operated, fuel, in particular H or a water/methanol mixture, can be fed to the anode chamber and an oxidant, in particular oxygen, can be fed to the cathode chamber. In standby mode, the cathode chamber ( ) does not allow flow through and the oxidant and fuel are present in both the cathode chamber ( ) and the anode chamber ( ), respectively. The fuel cell system remains at operating temperature in the standby mode. This enables the fuel cell system ( ) to be used as a combined interruption-free power supply unit and backup unit.