Patent · US Expired

Electrochemical fuel cell stack

US7485389B2 · kind B2 · utility

1Cited by

9References

14Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Felix Blank · Eßlingen, DE
Ottmar Schmid · Markdorf, DE
Markus Schudy · Ulm, DE

Key dates

Filing date	Dec 15, 2001
Grant date	Feb 3, 2009
Priority date	—
Expiry date	Mar 11, 2023

Classification

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

Abstract

An electrochemical fuel cell stack includes a membrane electrode assembly and a distributor plate. The distributor plate includes a channel region having gas channels for distributing reaction gas to the membrane electrode assembly, a first port area for supplying reaction gas to the channel region, and a second port area for removing reaction gas from the channel region. The gas channels are disentangled and each distributed in a respective separate channel area, at least one of the gas channels having at least one deflection point between the first and second port areas.

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