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Fuel cell system having integrated gas connections for connection to an external test gas supply

A fuel cell system and supply device technology, applied in fuel cells, fuel cell additives, power system fuel cells, etc., can solve problems such as high time, high consumption, and infrastructure consumption

Active Publication Date: 2020-07-14
AUDI AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, the fuel cell system is removed from the vehicle for maintenance and integrated into a system test bench, which entails a high expenditure of time and a high expenditure on infrastructure

Method used

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  • Fuel cell system having integrated gas connections for connection to an external test gas supply

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Embodiment Construction

[0027]figure 1 A fuel cell system generally designated 1 according to a preferred embodiment of the invention is shown. The fuel cell system 1 is part of a vehicle, not shown in further detail, in particular an electric vehicle, which has a traction motor which is supplied with electrical energy via the fuel cell system 1 .

[0028] The fuel cell system 1 includes a fuel cell stack 10 as a core component, which has a large number of single cells 11 arranged in a stacked form, which is constructed by alternately stacking membrane electrode assemblies (MEAs) 14 and bipolar plates 15 (see details). Each individual cell 11 accordingly accordingly comprises an MEA 14 with an ion-conducting polymer electrolyte membrane (Polymerelektrolytmembran) or another solid electrolyte not shown further here and catalytic electrodes arranged thereon on both sides (ie anode and cathode), which can catalyze the corresponding partial reactions of the fuel cell conversion and can be formed in part...

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Abstract

The invention relates to a fuel cell system (1) comprising a shut-off element (29, 421, 422, 431, 432) arranged in each case in a supply path (21, 31) and an exhaust gas path (22, 32) of the anode and / or cathode supply (20, 30), and comprising a gas connection (423, 424, 425, 433, 434) arranged in each case between a shut-off element and a fuel cell stack (10) for connecting to an external test gas supply. The gas connections allow diagnosis and / or maintenance of the fuel cell stack (10) in the installed state.

Description

technical field [0001] The invention relates to a fuel cell system which is provided for connection to an external test gas supply. Background technique [0002] Fuel cells use the chemical conversion of fuel and oxygen to water in order to generate electricity. For this purpose, the fuel cell contains the so-called membrane electrode assembly (MEA stands for membrane electrode assembly) as a core component, which is composed of an ion-conducting (mostly proton-conducting) membrane and correspondingly arranged on both sides. A structure composed of catalytic electrodes (anode and cathode) at the membrane. In general, a fuel cell is composed of a large number of MEAs arranged in stacks (stacks), the electrical power of which is accumulated. Between the individual membrane-electrode assemblies there are generally arranged bipolar plates (also called flow field plates or separator plates), which ensure the supply of the operating medium (i.e. reactants) to the cells and usual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04089H01M8/04082H01M8/04313H01M8/04664G01M3/02
CPCH01M8/04089H01M8/04201H01M8/04313H01M8/04664H01M2250/20Y02E60/50Y02T90/40H01M8/04388H01M8/04679H01M8/04753
Inventor J.德内克M.R.基希霍夫
Owner AUDI AG