流场板二次流对质子交换膜燃料电池性能影响  

Effect of secondary flow in PEMFC flow field plate on cell performance

作　　者：闵春华[1,2] 李飞[2] 王坤 MIN Chunhua;LI Fei;WANG Kun(School of Energy and Environmental Engineering,Hebei University of Technology,Tianjin 300401,China;Hebei Key Laboratory of Thermal Science and Energy Clean Utilization,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]河北工业大学能源与环境工程学院,天津300401 [2]河北工业大学热能科学与能源清洁利用河北省重点实验室,天津300401

出　　处：《河北工业大学学报》2023年第3期60-68,共9页Journal of Hebei University of Technology

基　　金：天津市自然科学基金(20JCZDJC00470)。

摘　　要：电池流道结构对电池性能有直接影响,有必要对电池流道结构进行研究。在质子交换膜燃料电池流道内放置堵块可以增强反应气体的传质进而增强电池性能,但不同堵块对电池性能影响不同。采用数值模拟的方法,建立了三维、稳态的单直流道质子交换膜燃料电池数值模型。对阴极流道内放置不同堵塞率堵块的质子交换膜燃料电池进行研究,重点分析堵块产生的二次流对电池性能的影响。研究发现在流道内放置堵块产生的二次流可以增强电池性能,堵块堵塞率为0.8时电池净功率最大。反应气体在流道内受到堵块扰流作用,在堵块后方产生二次流增强了反应气体传质是电池性能增强的主要原因。The channel structure of cell has a direct impact on the performance of cell,so it is necessary to study the channel structure of cell.Place blocks in the channel of proton exchange membrane fuel cell can enhance the mass trans-fer of reaction gas and enhance the performance of the cell,but different blocks have different effects on the performance of the cell.A three-dimensional,steady-state single channel proton exchange membrane fuel cell model was established by numerical simulation.Proton exchange membrane fuel cell with different blockage ratio blocks in the cathode channel was studied,and the effect of secondary flow generated by the block on the performance of the cell was emphatically ana-lyzed.It is found that the secondary flow generated by block in the channel can enhance the performance of the cell,and the net power of the cell is the maximum when the blockage ratio is 0.8.The reacting gas is disturbed by the block in the channel,and the secondary flow behind the block enhances the mass transfer of the reacting gas is the main reason for the enhanced cell performance.

关 键 词：质子交换膜燃料电池 堵块 二次流 数值模拟 堵塞率 

分 类 号：TM911.4[电气工程—电力电子与电力传动]