Single cell structure and fuel cell

By setting a smooth gasket in the single cell structure of the fuel cell, the water accumulation problem caused by the diffusion layer in the traditional fuel cell is solved, and the performance and stability of the battery are improved.

CN113782795BActive Publication Date: 2025-03-25FTXT ENERGY TECH CO LTD
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Patent Information

Application Number
CN202010524203.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-06-10
Publication Date
2025-03-25
Estimated Expiration
2040-06-10

AI Technical Summary

Technical Problem

In the single cell structure of traditional fuel cells, the surface of the diffusion layer of the MEA is not smooth, resulting in water accumulation during assembly, affecting battery performance.

Method used

A single cell structure is designed in which the CCM is arranged between two diffusion layers, the frame connects the end of the diffusion layer and the CCM, the gasket is arranged on the frame, the bipolar plate is arranged corresponding to the membrane electrode assembly, and the surface of the gasket facing one side to the distribution area is a smooth surface to prevent water accumulation.

Benefits of technology

Through the smooth gasket surface, water can flow smoothly, avoiding the occurrence of water accumulation, thereby improving the performance and stability of the fuel cell.

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Abstract

The present invention relates to the field of fuel cells, and provides a single cell structure and a fuel cell, wherein the single cell structure comprises a bipolar plate and a membrane electrode assembly; the bipolar plate comprises a distribution area and a reaction area; the membrane electrode assembly comprises a CCM, a diffusion layer, a frame and a gasket; the number of the diffusion layers is two, the CCM is arranged between the two diffusion layers, the frame is used to provide support for the diffusion layer and the CCM, and the gasket is arranged on the frame; the bipolar plate is arranged correspondingly to the membrane electrode assembly, wherein the reaction area is arranged correspondingly to the diffusion layer, the distribution area is arranged correspondingly to the gasket, and the surface of the gasket facing the distribution area is a smooth surface. The single cell structure of the present invention will not cause water accumulation.
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