Method and device for simulating moisture transfer process of cathode gas diffusion layer of fuel cell

The invention provides a fuel cell cathode gas diffusion layer moisture transfer process simulation method and device, and the method comprises the steps: building a pore grid physical model of a gas diffusion layer according to the porosity of the gas diffusion layer, the pore grid physical model comprises a solid matrix, pore nodes and pores; iteratively solving the mass flux of moisture transmission in each hole node and each hole according to a preset time step number through a pre-established mass transfer mathematical model of the gas diffusion layer; and iteratively solving the phase change latent heat of mutual transformation of water vapor and liquid water in each grid space according to a preset time step number through a pre-established heat transfer mathematical model of the gas diffusion layer. By adopting the method, a comprehensive and accurate reference basis can be provided for hydrothermal management and gas diffusion layer design of the fuel cell. 本发明提供了一种燃料电池阴极气体扩散层水分传递过程仿真方法及装置，根据气体扩散层的孔隙