Patent · US Active

Fuel cell system and method for switching off a fuel cell stack

US10727508B2 · kind B2 · utility

0Cited by

0References

11Claims

0Family size

Assignee

AUDI AG · DE

Inventors

Christian Lucas · Braunschweig, DE
Natalja Ermatschenko · Wolfsburg, DE
Daniel Grundei · Oberhausen, DE

Key dates

Filing date	Sep 30, 2015
Grant date	Jul 28, 2020
Priority date	—
Expiry date	Nov 19, 2036

Classification

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

Abstract

The disclosure relates to a fuel cell system comprising a fuel cell stack comprising anode chambers and cathode chambers, an anode supply comprising an anode supply path for supplying an anode operating gas to the anode chambers, and an anode exhaust path for discharging an anode exhaust gas from the anode chambers, and a cathode supply comprising a cathode supply path for supplying a cathode operating gas to the cathode chambers and a cathode exhaust path for discharging a cathode exhaust gas from the cathode chambers, and comprising a negative-pressure generation means for generating a negative pressure in the cathode chambers. It is provided that the negative-pressure generation means is designed as an ejector which is connected to a compressor arranged in the cathode supply path on the pressure input side, and to the cathode chambers of the fuel cell stack on the suction side, in a fluid-conducting manner.

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