基于双重强化传质流道的PEMFC性能研究  

Study on performance of PEMFC based on double enhanced mass transfer channel

作　　者：赵永豪 袁伟[1] 周飞鲲 汤勇[1] ZHAO Yonghao;YUAN Wei;ZHOU Feikun;TANG Yong(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou Guangdong 510641,China;Intelligent Hydrogen Hybrid Electric Vehicle Technology Research Institute,Foshan Xianhu Laboratory,Foshan Guangdong 528216,China)

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510641 [2]佛山仙湖实验室智能氢复合动力车辆技术研究院,广东佛山528216

出　　处：《电源技术》2022年第12期1433-1437,共5页Chinese Journal of Power Sources

基　　金：国家自然科学基金项目(51975218)。

摘　　要：高效的流道设计对质子交换膜燃料电池(PEMFC)性能有重要影响。设计了一种具有双重强化传质作用的流道结构,通过强化反应气体传递及其在多孔介质中的扩散,促使更多气体参与反应,进而达到提升电池性能的目的。利用COMSOL软件建立了基于这种新型流道的三维、稳态、非等温PEMFC模型。深入研究了横向与纵向双重强化流道结构对燃料电池内部传质和输出性能的影响。研究结果表明:双重强化流道结构能够提高气体流速,有效促进气体在多孔介质层的扩散传输,显著提升电池的输出性能。基于优化的流道结构参数,电池性能可有效提高28.7%。Efficient flow channel design plays an important role in performance improvement of proton exchange membrane fuel cell(PEMFC).This study designed a flow channel structure with double enhancement of mass transfer.The channel can enhance the cell performance by enhancing the transfer of reaction gas and its diffusion in the porous media,as well as delivering more gas to participate in the reaction.The software COMSOL was used to establish a three-dimensional,steady-state,non-isothermal PEMFC model based on the new flow channel.The influence of transverse and longitudinal reinforcement channel structures on the mass transfer and output performance of a PEMFC was investigated.The results show that the double enhanced flow channel structural design can improve the gas flow rate,effectively promote the diffusion and transmission of gas in the porous media layer,and significantly improve cell output performance.Based on the optimized flow channel structure parameters,the cell performance can be effectively improved by up to 28.7%.

关 键 词：质子交换膜燃料电池 双重强化流道 传质 电池性能 模拟 

分 类 号：TM911.4[电气工程—电力电子与电力传动]