Patent · US Expired

Fuel cell system

US6551731B1 · kind B1 · utility

24Cited by

3References

33Claims

0Family size

Assignee

AEG Energietechnik GmbH · DE

Inventors

Norbert Berg · Darmstadt, DE
Gerhard Filip · Kronberg, DE
Bernd Kohlstruck · Neu-Anspach, DE
Arnold Lamm · Langenau, DE

Key dates

Filing date	Mar 31, 2000
Grant date	Apr 22, 2003
Priority date	—
Expiry date	Mar 31, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a fuel cell system (11, 111) comprising an anode chamber (13, 113) and a cathode chamber (14, 114) which are separated from each other by a proton conducting membrane (15, 115). When the fuel cell system is operated, fuel, in particular H2 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 (14, 114) does not allow flow through and the oxidant and fuel are present in both the cathode chamber (14, 114) and the anode chamber (13, 113), respectively. The fuel cell system remains at operating temperature in the standby mode. This enables the fuel cell system (11) to be used as a combined interruption-free power supply unit and backup unit.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.