Patent · US Expired

Fuel-cell stack

US7314676B2 · kind B2 · utility

3Cited by

5References

16Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Herbert Hartnack · Erlangen, DE
Josef Lersch · Heroldsbach, DE
Arno Mattejat · Bubenreuth, DE

Key dates

Filing date	Sep 13, 2002
Grant date	Jan 1, 2008
Priority date	—
Expiry date	Jun 3, 2024

Classification

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

Abstract

During the humidification of operating gases for a fuel cell, the operating gases cool to such an extent as a result of the loss of evaporation heat that they cannot absorb humidity to prevent damage to the membrane of the fuel cell. To solve this problem, a fuel cell assembly includes a humidification cell, which contains a planar heating element. The humidification cell is configured in terms of shape, location and materials in the same way as a fuel cell of the fuel-cell stack.

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