System and method for testing matching visualization of fuel cell polar plate and diffusion layer

By designing a test system that includes visual testing modules and simulates gas/water flow, the problem of matching assembly force between the fuel cell plate and the diffusion layer is solved, and the efficient matching test between the plate and the diffusion layer is achieved, and the performance of the fuel cell is improved.

CN119715925APending Publication Date: 2025-03-28SUNRISE POWER CO LTD
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Patent Information

Application Number
CN202411843114.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-13
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The prior art is difficult to quickly observe and diagnose the assembly force matching between the fuel cell plate and the diffusion layer online, resulting in problems such as reducing gas conveying space, increasing flow resistance and liquid water accumulation.

Method used

A test system for visual matching of fuel cell plates and diffusion layers is designed, including a visual test module, a gas delivery path module, a liquid water delivery path module, a water vapor output path module and a test condition setting module. The system simulates gas conditions and liquid water flow rate at different current densities, monitors the liquid water flow state and flow resistance changes in real time, and judges the degree of matching between the electrode plate and the diffusion layer.

Benefits of technology

Visual testing of the matching of the plate and the diffusion layer is realized, which can intuitively observe the flow and distribution of liquid water, evaluate the flow resistance changes under different assembly forces, thereby optimizing the matching plan of the plate structure and diffusion layer model and improving fuel cell performance.

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Abstract

The invention relates to a fuel cell electrode plate and diffusion layer matching visualization test system, which comprises: a visualization test module, which is used for observing the flowing process of liquid water between a fuel cell electrode plate and a diffusion layer and influencing the existing influence of carbon paper deformation invading a flow channel space; the gas conveying passage module is used for adjusting the air inlet flow of the visual test module and simulating gas conditions under different current densities; the liquid water conveying passage module is used for adjusting the flow of water entering the visual test module so as to simulate the flow of water generated by the cathode under the corresponding current density; the water vapor output path module is used for adjusting the pressure of the outlet of the visual test module; and the test condition setting module is connected with the gas conveying passage module, the liquid water conveying passage module and the water vapor output passage module and is used for setting test conditions required in the test process.
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