Unlock instant, AI-driven research and patent intelligence for your innovation.

The fuel cell

A fuel cell and electrode unit technology, applied in the direction of fuel cells, fuel cell components, circuits, etc., to achieve the effects of reduced demand for reactants, reduced volume, and reduced bypass flow of reactants

Active Publication Date: 2021-04-02
AUDI AG
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The disadvantage of this solution is that gaps have to be provided in order to ensure that the diaphragm electrode unit is not damaged by the non-elastic bipolar plates when the battery is compressed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • The fuel cell
  • The fuel cell
  • The fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] figure 1 A fuel cell stack 11 is shown in the schematic. The fuel cell stack 11 includes two end plates 12 . Arranged between the end plates 12 are a plurality of stack elements stacked one above the other, which include bipolar plates 20 and membrane electrode units 30 . The bipolar plates 20 and the membrane electrode units 30 are stacked alternately. The membrane-electrode unit 30 respectively includes a membrane and adjacent electrodes on both sides of the membrane, ie, an anode and a cathode (not shown). Adjacent to the membrane, the membrane electrode unit 30 can also have a gas diffusion layer 33 . It is pressed between the end plates 12 of the fuel cell stack 11 by means of tension elements 16 , such as tie rods or clamping plates.

[0032] exist figure 1 In , only the narrow side is visible from the bipolar plate 20 and the membrane electrode unit 30 . The main sides of the bipolar plate 20 and the membrane electrode unit 30 are in contact with each other...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a fuel cell (10) having a stack comprising a bipolar plate (20) which has a flow field (22) formed by a profiled section of the bipolar plate (20), and an elongated sealing element (21) which at least partially surrounds the flow field (22), and a membrane electrode assembly (30). It is provided that, inside a cavity (25) formed between the membrane electrode assembly (30) and the bipolar plate (20) in a region between the sealing element (21) and the flow field (22), a filling agent (24) is arranged which extends in the extension direction of the cavity (25).

Description

technical field [0001] The invention relates to a fuel cell consisting of at least one bipolar plate and a stack of membrane electrode units held by a frame. In this case, the bipolar plate has a flow field formed by the shaping of the bipolar plate. 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 as a core component a so-called membrane electrode unit (MEA stands for membrane electrode assembly), which is composed of an ion-conducting, in particular proton-conducting, membrane and a membrane electrode arranged on both sides of the membrane. A combination of electrodes (anode and cathode). Furthermore, a gas diffusion layer (GDL) can be arranged on both sides of the membrane-electrode unit on the side of the electrode facing away from the membrane. Typically, a fuel cell is formed of a plurality of MEAs arranged in a stack, the electrical power of wh...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/0276H01M8/0284
CPCH01M8/0276H01M8/0284Y02E60/50H01M8/0258
Inventor C.M.齐利希F.瓦尔克林
Owner AUDI AG