Gas-water separation device of hydrogen fuel cell

By designing a gas-liquid separation device for hydrogen fuel cells, gas-liquid separation is achieved through a combination of gravity and structural design, and liquid water is automatically discharged. This solves the problems of reduced electrode active area and decreased hydrogen purity caused by liquid water retention, thereby improving the energy efficiency and stability of the fuel cell.

CN224123352UActive Publication Date: 2026-04-14HENAN HYDROGEN POWER TECH CO LTD
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Patent Information

Application Number
CN202520845350.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-30
Publication Date
2026-04-14
Estimated Expiration
2035-04-30

AI Technical Summary

Technical Problem

In traditional hydrogen fuel cell gas-liquid separation devices, the retention of liquid water leads to a reduction in electrode active area, an increase in ohmic impedance, a decrease in hydrogen purity, and the direct emission of unreacted gases, which reduces energy efficiency and system stability.

Method used

A hydrogen fuel cell gas-liquid separation device was designed. By combining an input pipe, a split pipe, a gas-liquid separation pipe, and a water absorption component, gas-liquid separation is achieved using gravity and a special structure. Combined with a floating ring and a linkage rod to adjust the opening of the return pipe, liquid water is automatically discharged, ensuring hydrogen purity and device stability.

Benefits of technology

It achieves efficient gas-water separation, improves hydrogen purity, avoids liquid water retention, enhances electrode active area, and improves fuel cell energy efficiency and long-term operational stability.

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Abstract

The utility model provides a gas-water separation device of a hydrogen fuel cell, which relates to the technical field of fuel cells and comprises a tank body, the separation assembly comprises an input pipe fixedly connected to the interior of the tank body, one end of the input pipe is fixedly connected with a flow dividing pipe, the bottom end of the flow dividing pipe is fixedly connected with a gas-liquid separation pipe, the top end of the outer side of the gas-liquid separation pipe is provided with a vent hole, and the bottom end of the gas-liquid separation pipe is fixedly connected with a bottom supporting disc; the interior of the separation assembly is fixedly connected with a water absorption assembly; by means of the design, efficient gas-water separation and automatic discharge of water are achieved, the purity and the circulation efficiency of hydrogen are improved, meanwhile, the situation that the active area of an electrode is reduced due to liquid water retention is avoided, and the problems that a traditional gas-liquid separation device carries liquid drops and the purity of hydrogen is reduced under the conditions of high humidity and high flow speed are effectively solved.
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