A simulation method and system for passive water removal of a hydrogen-oxygen proton exchange membrane fuel cell

By employing precise modeling and multiphysics coupled simulation, the problem of liquid water accumulation in proton exchange membrane fuel cells under near-dead-end operation was solved, achieving high-precision synergistic optimization of fuel cell drainage and electrical performance, and improving the accuracy and reliability of simulation results.

CN122452445APending Publication Date: 2026-07-24XI AN JIAOTONG UNIV
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Patent Information

Application Number
CN202610900338.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-22
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In the near-dead-end operation mode, existing proton exchange membrane fuel cells (PEMFCs) cannot drain liquid water in time, leading to cathode accumulation, blockage of reactant transport channels, impacting battery performance and potentially causing shutdown. Traditional simulation models have low accuracy and cannot accurately simulate multi-physics coupling, making them unsuitable for the passive drainage structure of space-based hydrogen-oxygen PEMFCs.

Method used

By accurately modeling, calibrating parameters, and performing multiphysics coupling simulation, a three-dimensional numerical calculation model is constructed. Combined with the physical data of the porous titanium water transport plate at the cathode, virtual electrical boundaries and drainage pressure boundaries at the cathode are set, and the oxygen stoichiometry is adjusted to achieve high-precision simulation of near-dead-end operation of the fuel cell.

Benefits of technology

It achieves accurate reproduction of the multi-physics field distribution inside the fuel cell, improves the accuracy and reliability of simulation results, provides reliable data support for the synergistic optimization of drainage performance and electrical performance, and improves the operating stability and power generation efficiency of the fuel cell.

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Abstract

The present application belongs to the technical field of hydrogen-oxygen proton exchange membrane fuel cell, and discloses a hydrogen-oxygen proton exchange membrane fuel cell passive drainage simulation method and system, which is used to solve the problem that the existing commercial CFD software modeling cannot be applied to PEMFC passive drainage simulation. The method is based on the PEMFC structure integrated with porous titanium water transfer plate, a three-dimensional calculation model containing a cathode equivalent porous titanium water transfer plate, a cathode solid plate area and a virtual cooling water flow channel is established; the physical property parameters and boundary conditions are configured, the near dead-end operation condition is set; the multi-physical field coupling solution is carried out, and the steady-state physical field distribution and the simulation polarization curve are obtained. The system adopts a corresponding modular structure and cooperatively realizes closed-loop simulation. The present application can provide support for passive drainage type battery structure optimization, reduce research and development cost, and has important engineering application value.
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