A branched wave channel fuel cell bipolar plate structure and fuel cell

By introducing a wave-like structure into the fuel cell flow channel, the problems of low gas transmission efficiency and poor liquid water removal in traditional branch DC channels are solved, achieving higher reactant utilization and liquid water removal effect, thus improving battery performance and lifespan.

CN224554336UActive Publication Date: 2026-07-24GUANGDONG YUNTAO HYDROGEN ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG YUNTAO HYDROGEN ENERGY TECH CO LTD
Filing Date
2025-07-16
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The gas flow pattern of existing branch DC fuel cells is simple and the gas transmission efficiency is low, resulting in insufficient gas supply at the end of the battery and low efficiency in liquid water removal, which affects the battery output performance and lifespan.

Method used

The branched wave channel design promotes frequent gas disturbance and convection mass transfer by setting wave-shaped structures in the channel, thereby improving gas transmission efficiency. The wave-shaped interface also accelerates the discharge of liquid water and reduces the risk of flooding.

Benefits of technology

It improves the output performance of fuel cells and extends battery life, while reducing the risk of battery flooding by increasing reactant participation rate and liquid water removal capacity.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224554336U_ABST
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Abstract

The utility model belongs to fuel cell polar plate field discloses a kind of branch wave flow channel fuel cell bipolar plate structure and fuel cell.Bipolar plate structure is: be provided with wave-shaped flow channel on anode plate and cathode plate, and the flow channel includes main flow channel and branch flow channel;Wave-shaped main flow channel is arranged at the gas inlet and gas outlet of polar plate, wave-shaped branch flow channel is arranged at the middle position of polar plate, and the wave-shaped main flow channel is connected with wave-shaped branch flow channel.The utility model uses branch wave flow channel, since its periodic variation cross-sectional area frequently disturbs reaction gas, promotes convective mass transfer and mass transfer under rib, so that more reactants can be from GDL into CL and participate in reaction, and simultaneously, wave flow channel is due to its structural characteristics, so that liquid water is discharged from gentle wave interface after local acceleration, and this frequent speed change is more conducive to the removal of liquid water, so as to improve the output performance of battery, reduce the risk of waterlogging, and improve battery life.
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