Patent · US Active

Method for supplying fuel gas to a gas chamber of a fuel cell and fuel cell

US8748054B2 · kind B2 · utility

0Cited by

1References

10Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Detlev Coerlin · Erlangen, DE
Walter Stuhler · Hirschaid, DE
Ottmar Voitlein · Lonnerstadt, DE

Key dates

Filing date	Jun 22, 2006
Grant date	Jun 10, 2014
Priority date	—
Expiry date	Jan 24, 2031

Classification

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

Abstract

Mechanical stresses of the membrane of a fuel cell can be reduced by virtue of the fact that the supply of feed gas to a gas chamber of the fuel cell takes places, initially, by means of a first pressure increasing speed and then by means of a second pressure increasing speed. The first pressure increasing speed is slower than the second pressure increasing speed. Pressure surges are prevented in the membrane due to the lower pressure increasing speed in the first phase of the gas supply, and as a result, the life span of the membrane is increased.

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