Fuel cell sealing assembly and sealing method

A technology of fuel cells and sealing components, which is applied to fuel cell parts, fuel cells, electrical components, etc., can solve the problems of complex structure of elastic sealing materials, high processing precision requirements, complex processing procedures, etc., to prevent gas crossover , enhance the sealing strength, improve the effect of safety factor

Inactive Publication Date: 2018-05-18
BEIJING UNIV OF AERONAUTICS & ASTRONAUTICS DONGGUAN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the irregular shape of the elastic sealing material involved in the present invention has a complex structure, high requirements for processing accuracy, high production difficulty, complex processing procedures, and low installation efficiency

Method used

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  • Fuel cell sealing assembly and sealing method
  • Fuel cell sealing assembly and sealing method
  • Fuel cell sealing assembly and sealing method

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Embodiment Construction

[0028] In order to describe the technical solution, structural features, and achieved technical effects of the present invention in detail, the following will be described in detail in combination with specific embodiments and accompanying drawings.

[0029] Such as figure 1 As shown, the fuel cell sealing assembly 100 provided by the present invention is used to seal a fuel cell including a bipolar plate 1 and a membrane electrode. The bipolar plate 1 is provided with a sealing groove 11 , and the membrane electrode includes a proton exchange membrane 3 . The fuel cell seal assembly 100 includes a seal 12 and a support structure 2 . The seal 12 is arranged in the sealing groove 11 of the bipolar plate 1, the support structure 2 includes an upper support structure 21 and a lower support structure 22, the upper support structure 21 is located on the proton exchange membrane 3, and the lower support structure 22 is located on the proton exchange membrane 3 below, and one end of...

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Abstract

The invention provides a fuel cell sealing assembly. The fuel cell sealing assembly comprises a sealing part and a supporting structure and is used for sealing a fuel cell monomer including a bipolarplate and a membrane electrode, the bipolar plate is provided with a sealing groove, the membrane electrode comprises a proton exchange membrane, the sealing part is arranged in the sealing groove, the supporting structure comprises an upper supporting structure body and a lower supporting structure body, one end of the upper supporting structure body and one end of the lower supporting structurebody form attaching areas for being attached to the upper top face and the lower bottom face of the proton exchange membrane respectively, and the other end of the upper supporting structure body is attached to the other end of the lower supporting structure body to form a sealing area for abutting against the sealing part. The fuel cell sealing assembly is simple in structure and low in production difficulty coefficient and has a good sealing effect, very high economy and practicability. The invention further provides a fuel cell and a sealing method of the fuel cell.

Description

technical field [0001] The invention belongs to the field of hydrogen-oxygen proton exchange membrane fuel cells, and in particular relates to a fuel cell sealing assembly and a sealing method. Background technique [0002] A fuel cell is a power generating device that directly converts the chemical energy present in fuel and oxidant into electrical energy. A fuel cell is composed of multiple single cells, and each cell mainly includes a bipolar plate and a membrane electrode. To ensure that the fuel and oxidant entering the fuel cell are distributed across the entire MEA surface without mixing, sealing techniques are critical. [0003] In the existing sealing technology, sealing rings are mainly used for sealing. The invention patent with the application number 201480029887.5 discloses a fuel cell sealing structure. Elastic sealing materials with different shapes are placed in the bipolar plate sealing grooves on both sides of the membrane electrode. The main lip on one s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0271H01M8/0273H01M8/0276H01M8/0286
CPCH01M8/0271H01M8/0273H01M8/0276H01M8/0286H01M2008/1095Y02E60/50Y02P70/50
Inventor 马传明曾嘉年李目武闫志龙
Owner BEIJING UNIV OF AERONAUTICS & ASTRONAUTICS DONGGUAN
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