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.

Date of Patent:
Sep. 02, 2003

Filed:

Sep. 11, 2000
Applicant:
Inventor:
Assignee:

Ballard Power Systems AG, Kirchheim/Teck-Nabern, DE;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 8/04 ; H01M 8/12 ;
U.S. Cl.
CPC ...
H01M 8/04 ; H01M 8/12 ;
Abstract

In a process for operating a fuel cell system with a water balance, a hydrogen-containing medium or a mixture of mediums is reformed in a reforming reactor with a water requirement, by adding water to a hydrogen rich reformate. The reformate is fed to an anode region of a fuel cell and reacts with oxygen from a cathode region of the fuel cell, forming water in the fuel cell. The the water required for the reforming reaction and/or the water balance of the fuel cell system is coupled directly to the oxidation rate of the partial combustion of the hydrogen-containing medium or the mixture of mediums in an oxidizing unit upstream of the reforming reactor.


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