质子交换膜燃料电池仿真特性分析

Simulation Analysis of Proton Exchange Membrane Fuel Cell

【目的】质子交换膜燃料电池(PEMFC)技术是实现高效、零污染的发电技术,其通过电化学反应,将氢气化学能转换为电能,在家用热电联产、新能源汽车等领域的应用前景广阔。【方法】本研究主要对某款PEM燃料电池的仿真特性进行研究。通过Simulink仿真软件来搭建燃料电池系统模型,重点研究测试阳极氢气和阴极氧气的分压力、工作温度等因素变化时,电池堆的电流-电压曲线,对PEMFC的性能变化规律进行研究。【结果】由仿真研究可知,仿真试验结果与典型燃料电池极化特性的曲线基本相同,该款PEMFC具有良好的稳态输出性能。【结论】本研究的结论为质子交换膜燃料电池堆性能的优化调整、提高电池系统运行的稳定性提供可靠依据。

[Purposes]Proton exchange membrane fuel cell(PEMFC)technology is an efficient and zeropollution power generation technology,which can convert the chemical energy of hydrogen into electric energy through the application of electrochemical reaction,and has a broad application prospect in vari⁃ous fields such as household cogeneration of heat and power,new energy vehicles and so on.[Methods]This study mainly builds a model of a PEM fuel cell system through Simulink simulation tool,and fo⁃cuses on the current-voltage curve of the battery stack when the partial pressure of anode hydrogen and cathode oxygen and the working temperature change factors,and studies the change law of PEMFC per⁃formance.[Findings]According to this simulation analysis,the simulation results are basically the same as the polarization characteristic curves of typical fuel cells,and the PEMFC has good steady-state out⁃put performance.[Conclusions]The conclusions obtained in this study can provide a reliable basis for the optimization and adjustment of the performance of proton exchange membrane fuel cell stack and the improvement of the operating stability of the battery system.