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Electrochemical device

An electrochemical and equipment technology, applied in the field of electrochemical equipment, can solve the problems of instability of the sealing system, increase the complexity and cost of the assembly process, and reduce the positioning accuracy, and achieve the effect of improving the positioning accuracy.

Pending Publication Date: 2021-02-09
EKPO FUEL CELL TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the instability of the sealing system in this area, the positioning accuracy of the sealing system in the area of ​​the medium channel is significantly reduced, or a suitable positioning may not be possible at all
This increases the complexity and cost of the assembly process required to manufacture electrochemical devices

Method used

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Examples

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Embodiment Construction

[0067] exist figure 1 with 2 An electrochemical device, indicated generally at 100 , such as a fuel cell device or an electrolyser, comprises a stack 102 comprising a plurality of electrochemical units 106 , such as fuel cell units or electrolysers, successively in a stacking direction 104 the cell; and comprising (not shown) a compression device for applying a compression force directed in the stacking direction 104 to the electrochemical cell.

[0068] exist figure 2 As best seen in , each electrochemical cell 106 of the electrochemical device 100 includes a bipolar plate 108 , a membrane electrode assembly (MEA) 110 and a sealing system 112 , respectively.

[0069] The membrane electrode arrangement 110 comprises, for example, a catalyst coated membrane (CCM) 113 and two gas diffusion layers 114 and 116, wherein the first gas diffusion layer 114 is arranged on the anode side and the second gas diffusion layer 116 placed on the cathode side.

[0070] The bipolar plate 1...

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PUM

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Abstract

In order to provide an electrochemical device, comprising a stack of multiple electrochemical units which follow one another along a stacking direction and each comprise an electrochemically active membrane-electrode arrangement, a bipolar plate and a sealing system, at least one medium channel, which extends along the stacking direction through a number of the electrochemical units, and at leastone flow zone, through which a medium from the medium channel can flow transversely to the stacking direction from the medium channel to another medium channel, wherein the sealing system comprises aflow-zone sealing arrangement, which extends around at least one flow zone, and at least one medium-channel sealing arrangement, which extends around a medium channel, in which electrochemical devicethe sealing system has a high mechanical stability and can be precisely positioned during the assembly of the electrochemical device, it is proposed that the flow-zone sealing arrangement is fixed onthe membrane-electrode arrangement and the at least one medium-channel sealing arrangement is fixed on the bipolar plate.

Description

technical field [0001] The present invention relates to electrochemical devices comprising: [0002] A stack consisting of a plurality of electrochemical units successively along the stacking direction, the electrochemical units respectively include electrochemically active membrane electrode devices, bipolar plates and sealing systems, [0003] at least one dielectric channel extending through the plurality of electrochemical cells along the stacking direction, and [0004] at least one flow field through which the medium from the medium channel can flow transversely to the stacking direction from the medium channel to the other medium channels, [0005] Wherein, the sealing system includes a flow field sealing device extending around at least one flow field and at least one medium channel sealing device extending around the medium channel. Background technique [0006] In known electrochemical devices of this type, the sealing system is bonded to one or more gas diffusio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B9/77C25C7/00H01M8/0271H01M8/0286H01M8/242H01M8/2483H01M8/1018
CPCC25B9/77H01M8/0271H01M8/0286H01M8/242H01M2008/1095H01M8/2483Y02E60/50C25B13/02H01M8/0258H01M8/0276
Inventor 彼得·施塔尔于尔根·克拉夫特
Owner EKPO FUEL CELL TECH GMBH