质子交换膜燃料电池阴极气液两相流模型的建模及仿真

摘要

Impacting for liquid generated in porous media of proton exchange membrane fuel cell (PEMFC) and effect-ing on its mass transfer and performance,a one-dimensional two-phase flow model is established in this paper. First-ly,the cathode oxygen partial pressure of the fuel cell is solved through using the MATLAB software;then this mod-el is simulated by using the Matlab/simulink software, the desired image is got. By comparison with the experimental results,shows that the model is feasible. Finally,analysing different operating temperature and operating pressure of the fuel cell output voltage influence on the battery performance were researched. The results show that, within the range of 313~353K、0.2~0.4MP,raising the operating temperature and operating pressure will help improve fuel cell perfor-mance.%针对质子交换膜燃料电池（PEMFC）多孔介质中产生的液态水对其传质及性能的影响，建立了一维气液两相流模型。首先采用Matlab编程软件对燃料电池的阴极氧气分压进行求解；然后运用Matlab/simulink软件对模型进行仿真，得到所需图像。通过与实验结果对比，说明该模型具有可行性。最后，研究了不同的工作温度及操作压力对燃料电池输出电压的影响。结果表明，在313~353K、0.2~0.4MP范围内，提高工作温度和操作压力有利于提升燃料电池的性能。