Patent · US Active

PEM fuel cell with charging chamber

US7811719B2 · kind B2 · utility

0Cited by

2References

14Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Felix Blank · Eßlingen, DE
Thomas Kunick · Illerkirchberg, DE

Key dates

Filing date	Jul 26, 2006
Grant date	Oct 12, 2010
Priority date	—
Expiry date	Nov 5, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49117
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Proposed is a PEM fuel cell that comprises a separator plate assembly with a charging chamber, which is partitioned off by a partition wall and via charging spots has a fluid connection to an adjoining cathode chamber. The partition wall is designed so that the depths of the charging channels in the charging chamber and the depths of the distribution channels in the adjoining cathode chambers change in such a way that the quantity of oxidant that is charged at a charging spot from the charging chamber into the cathode chamber can be fixed in advance. As a result, the charging of oxidant, which has not been humidified or only slightly, into the cathode chamber can be improved with regard to the curve of the relative humidity along the cathode. Also proposed is a method for manufacturing a separator plate assembly suitable for a PEM fuel cell.

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