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Electrochemical device

An electrochemical and equipment technology, applied in the field of electrochemical equipment, can solve problems such as consumption

Active Publication Date: 2016-11-09
EKPO燃料电池技术公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, however, it is necessary to support or reinforce the sealing element, for which there is no counterpart on the other side of the bipolar plate, which requires more complex structural solutions

Method used

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  • Electrochemical device
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Embodiment Construction

[0081] Figures 1 to 4 An electrochemical device, generally indicated at 100, is shown, such as a fuel cell stack or an electrolytic device, comprising a stack comprising a plurality of electrochemical cells 106 (such as fuel cell cells or electrolytic cells) following one another in a stacking direction 104. cell) and (not shown) a tensioning device for loading the electrochemical cell with a tensioning force oriented in the stacking direction 104 .

[0082] like best from figure 2 and 3 As seen, each electrochemical cell 106 of the electrochemical device 100 includes a bipolar plate 108 and a membrane electrode assembly (MEA) 110 , respectively.

[0083] The membrane electrode arrangement 110 comprises, for example, a catalyst-coated membrane (“catalyst coated membrane”; CCM) and two gas diffusion layers 112 and 114 , wherein the first gas diffusion layer 112 is arranged on the anode side and the second gas diffusion layer 114 placed on the cathode side.

[0084] The bi...

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PUM

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Abstract

The invention relates to an electrochemical device, comprising a stack consisting of a plurality of electrochemical units which succeed one another in a stacking direction and which in each case comprise an electrochemically active membrane-electrode arrangement, a bipolar plate, and at least one sealing element, at least one medium channel which extends in the stacking direction through a plurality of the electrochemical units, at least one flow field through which a medium can flow out of the medium channel transversely with respect to the stacking direction from the medium channel to another medium channel, and at least one connection channel, through which the flow field and the medium channel are in fluid communication with one another. Said device enables an overlap of sealing elements which succeed one another in the stacking direction even in the region of a connection channel and requires no complex structural solution for supporting or reinforcing the sealing element. According to the invention, the sealing arrangement comprises a connection channel region, in which the sealing arrangement traverses the at least one connection channel, and at least one neighbouring region lying in front of or behind the connection channel region in the longitudinal direction, wherein in the connection channel region the sealing arrangement has a lower average height than in the neighbouring region.

Description

technical field [0001] The present invention relates to an electrochemical device comprising: [0002] a stack consisting of a plurality of electrochemical units following one another in the stacking direction, the electrochemical units each comprising an electrochemically active membrane electrode arrangement, a bipolar plate and at least one sealing element; [0003] at least one dielectric channel extending through the plurality of electrochemical cells in the stacking direction; [0004] at least one flow field via which the medium from the medium channels can flow transversely to the stacking direction from one medium channel into the other medium channel; and [0005] At least one connecting channel via which the flow field and the medium channel are fluidically connected to one another. Background technique [0006] In known electrochemical devices of this type, the space of the electrochemical device through which a medium, such as gas, oxidizing agent or coolant f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/242H01M8/0258H01M8/0276H01M8/0284
CPCH01M8/0258H01M8/0276H01M8/0284H01M8/242H01M2008/1095H01M8/2483Y02E60/50H01M8/2457H01M8/241H01M8/0271H01M8/0267
Inventor 于尔根·克拉夫特彼得·施塔尔米夏埃尔·格茨曼努埃尔·莫尔科斯
Owner EKPO燃料电池技术公司