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Integrated reversible hydrogen fuel cell high-pressure sealing element

A fuel cell and high-pressure sealing technology, which is applied in the field of electrolytic cells, can solve the problems of easy misalignment of sealing rings, sealing contact pressure, large compressive stress, etc., and achieve the effect of improving sealing performance and meeting the needs of high-pressure sealing

Pending Publication Date: 2022-03-18
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a one-piece reversible hydrogen seal in order to solve the problems that the sealing material compressive stress is too large during use, the sealing ring is prone to misalignment when there are manufacturing and assembly errors, and the sealing contact pressure decreases with the increase of gas pressure. Fuel cell high-pressure sealing components, significantly improving fuel cell sealing performance

Method used

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  • Integrated reversible hydrogen fuel cell high-pressure sealing element
  • Integrated reversible hydrogen fuel cell high-pressure sealing element
  • Integrated reversible hydrogen fuel cell high-pressure sealing element

Examples

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Effect test

Embodiment 1

[0036] One-piece reversible high-pressure sealing components for hydrogen fuel cells, including hydrogen-side sealing rings and oxygen-side sealing rings; the hydrogen-side sealing rings adopt an odd-numbered composite sealing structure with rectangular structures and O-shaped structures arranged at intervals, and the oxygen-side sealing rings use O-shaped sealing rings. Odd-numbered composite sealing structure with rectangular structure and rectangular structure arranged at intervals.

[0037] like Figure 1-6As shown, a complete integrated reversible fuel cell structure includes an oxygen plate 3, a hydrogen plate 4, a membrane electrode 5 and a membrane electrode frame 6, and oxygen is provided between the oxygen plate 3 and the membrane electrode frame 6. A hydrogen side sealing ring 2 is arranged between the side sealing ring 1 , the hydrogen electrode plate 4 and the membrane electrode frame 6 . An oxygen-side sealing ring 1 and a hydrogen-side sealing ring 2 are arrang...

Embodiment 2

[0052] A new type of high-pressure sealing structure for an integrated reversible hydrogen fuel cell, including hydrogen side sealing rings and oxygen side sealing rings; The side sealing ring adopts an O-shaped structure and an odd-numbered composite sealing structure with rectangular protrusions arranged at intervals.

[0053] A complete integrated reversible fuel cell structure includes an oxygen plate 3, a hydrogen plate 4, a membrane electrode 5 and a membrane electrode frame 6, and an oxygen side sealing structure is provided between the oxygen plate 3 and the membrane electrode frame 6 1. A hydrogen-side sealing structure 2 is provided between the hydrogen electrode plate 4 and the membrane electrode frame 6 . An oxygen-side sealing structure 1 and a hydrogen-side sealing structure 2 are provided between the hydrogen electrode plate 4 , the oxygen electrode plate 3 and the membrane electrode frame 6 to ensure good sealing performance of the membrane electrode 5 .

[00...

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Abstract

The invention relates to an integrated reversible hydrogen fuel cell high-pressure sealing element which is a composite sealing structure formed by arranging m rectangular sealing structures and n O-shaped sealing structures at intervals and integrally forming, every two adjacent structures are connected through a central thin-layer structure, m is larger than or equal to 1, n is larger than or equal to 1, and m + n is an odd number. Compared with the prior art, through the cooperation of the O-shaped structure and the rectangular structure of the sealing ring, the good self-tightening performance of the O-shaped structure and the anti-sliding performance of the rectangular structure are fully utilized; the problems that the sealing ring is easy to misplace and the sealing contact pressure is reduced along with the increase of the gas pressure when the compression stress of the sealing material is too large and the assembly error exists in the use process of the fuel cell are solved, and the sealing performance of the fuel cell is obviously improved.

Description

technical field [0001] The invention relates to the technical fields of reversible hydrogen fuel cells and electrolytic cells, in particular to an integrated reversible hydrogen fuel cell high-pressure sealing element. Background technique [0002] The integrated reversible hydrogen fuel cell is an electrochemical device that combines the fuel cell (FC) power generation process and the electrolysis of water (WE) process in the same device to achieve reversible and controllable conversion of electrical energy to chemical energy; High energy density and low space cost have great application prospects in space power fields such as aerospace, unmanned aerial vehicles, and submarines. The integrated reversible hydrogen fuel cell needs to realize two working modes of fuel cell (FC) and electrolytic cell (WE): in FC mode, H 2 and O 2 A chemical reaction occurs to generate water, and the electrical energy is output to the outside; in WE mode, under the load of an external power su...

Claims

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Application Information

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IPC IPC(8): H01M8/0273H01M8/0276
CPCH01M8/0273H01M8/0278Y02E60/50
Inventor 彭林法田钰琦邱殿凯邓宇君来新民
Owner SHANGHAI JIAO TONG UNIV
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