Patent · US Expired

Fuel cell system and method for operating a fuel cell

US6656619B2 · kind B2 · utility

1Cited by

3References

12Claims

0Family size

Assignee

BALLARD POWER SYSTEMS INC. · US

Inventors

Werner Belschner · Michelbach an der Bilz, DE
Joachim Blum · Remscheid, DE
Lars Kaufmann · Tauberbischofsheim, DE

Key dates

Filing date	Mar 29, 2001
Grant date	Dec 2, 2003
Priority date	—
Expiry date	Jul 30, 2021

Classification

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

Abstract

In a fuel cell system having a gas generation system for providing hydrogen from a carbon- and hydrogen-containing medium for a fuel cell unit, means are provided for adjusting pressure in the gas generation system and/or mass flow through the fuel cell unit, upstream of the fuel cell unit. In a transition from a part-load range to a full-load range, the pressure can be at least briefly reduced, and in a transition from a full-load range to a part-load range, the pressure can be at least briefly increased.

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