高温质子交换膜燃料电池堆的建模与仿真  

Modeling and simulation of HT-PEMFC stack

作　　者：林煌[1] 焦魁[1] 尹燕[1] 杜青[1] 

机构地区：[1]天津大学内燃机燃烧学国家重点实验室,天津300072

出　　处：《电源技术》2015年第6期1225-1227,1288,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金(51276121);天津市自然科学基金(11JCZDJC235007&11JCYBJC07400)

摘　　要：高温质子交换膜燃料电池相较于传统质子交换膜燃料电池具有更快的电化学动力性,简易的水热管理以及较强的耐CO能力等优点,因此已成为燃料电池研究工作的新热点。建立了高温质子交换膜燃料电池堆的模型,研究单电池数量、电流密度、阳极进气湿度等因素对电池堆性能的影响。研究表明,Z型结构电池堆内阳极气体质量流量分布比较一致,阴极气体质量流量分布呈中间低,两侧高的趋势。单电池数量、电流密度的增大会引起气体分布不均匀性的增强,进而使电池堆电压不均匀性增大;阳极进气湿度的变化主要影响电池欧姆损失。High temperature proton exchange membrane fuel cells （HT-PEMFCs） have faster electrochemical kinetics, easier water management and higher CO tolerance than the conventional PEMFCs, becoming the hot topic of fuel cell research. A HT-PEMFC stack model was developed to investigate the effect of the number of cell, current density and anode inlet relative humidity on the performance of HT-PEMFC stacks. The results indicate that on the anode side of a Z-configuration stack, the mass flow is fairly uniformly distributed among the active cells in the stack; the cathode air flow distribution is highly non-uniform with the minimum occurring in the middle cell of the stack and maximum at the end. The non-uniformity degree of gas distribution increases as the number of the cells and the current density increase. The anode inlet relative humidity mainly influences the cell ohmic loss.

关 键 词：高温质子交换膜燃料电池堆 电压不均匀性 单电池数量 电流密度 

分 类 号：TM911.4[电气工程—电力电子与电力传动]