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Fuel cell bipolar plate sealing structure and sealing method

A sealing structure, fuel cell technology, applied in fuel cells, fuel cell components, sealing/supporting devices, etc., can solve the problems of high stack height, inability to mass production, and inconvenient assembly.

Pending Publication Date: 2020-07-07
SHANGHAI SHENLI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese Patent Publication No. CN110571452A discloses a gasket for a fuel cell. The sealing method used is to place a seal on both sides of the MEA and then compress the seal. This seal usually requires two seals. Sealing, thicker, resulting in a high stack height, affecting power density, and inconvenient assembly, one side of the seal must be fixed with glue, otherwise it cannot be stacked and installed, and mass production cannot be carried out

Method used

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  • Fuel cell bipolar plate sealing structure and sealing method
  • Fuel cell bipolar plate sealing structure and sealing method
  • Fuel cell bipolar plate sealing structure and sealing method

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0029] The present invention relates to a fuel cell bipolar plate sealing structure and a sealing method for the sealing structure, and a specific embodiment is provided below.

[0030] A fuel cell bipolar plate sealing structure, used for sealing between an anode plate 1, a membrane electrode 2 and a cathode plate 3, the sealing structure includes an insulating varnish layer 4, an adhesive 5 and a sealing member 6, the insulating varnish layer 4 and The a...

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Abstract

The invention relates to a fuel cell bipolar plate sealing structure, and the structure is used for sealing among an anode plate, a membrane electrode and a cathode plate, and comprises an insulatingpaint layer, an adhesive and a sealing element, wherein the insulating paint layer and the adhesive are both sprayed on the anode plate or the cathode plate; the insulating paint layer is sprayed on the edge area of the polar plate, and the adhesive is coated on the reaction area of the polar plate; the membrane electrode is fixed on the polar plate through an adhesive, and the sealing element ispositioned in a sealing groove of the polar plate. Compared with the prior art, the invention has the advantages of high volume power density of the galvanic pile, simpler assembly, low leakage risk and the like.

Description

technical field [0001] The invention relates to the technical field of fuel cell sealing, in particular to a fuel cell bipolar plate sealing structure and sealing method. Background technique [0002] Fuel cell is a kind of new energy battery. It has the advantages of low operating temperature, high specific power, and rapid start-up. It has become one of the hotspots in the field of new energy research. The key components of a fuel cell are the membrane electrode MEA and bipolar plates. The bipolar plate includes a cathode plate and an anode plate with a flow field. The MEA includes a reaction area and a supporting frame, which is placed between the cathode and anode plates. The reaction area provides a platinum catalyst to support the electrochemical reaction, and the frame supports the reaction area and isolates the cathode and anode. The role of the board to prevent short circuits. [0003] When the fuel cell is working, there are gaseous medium hydrogen, air, and cool...

Claims

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Application Information

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IPC IPC(8): H01M8/0276H01M8/0284H01M8/0286
CPCH01M8/0276H01M8/0284H01M8/0286Y02E60/50
Inventor 胡正坤甘全全王永湛
Owner SHANGHAI SHENLI TECH CO LTD
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