内燃机工程2025，Vol.46Issue(3)：69-78,10.DOI:10.13949/j.cnki.nrjgc.2025.03.008
阴极出口可变结构对空冷型质子交换膜燃料电池的性能影响
Effects of Cathode Outlet Variable Structure on the Performance of Air-Cooled Proton Exchange Membrane Fuel Cells
摘要
Abstract
An air-cooled proton exchange membrane fuel cell(PEMFC)model with a variable cathode outlet structure was designed with separate cooling channels and a variable cathode outlet area,enabling effective regulation of the moisture balance inside the cell while enhancing the cooling effect.In order to highlight the characteristics of the outlet variable structure,single-cell models of the original structure and the outlet variable structure were calculated.At an output voltage of 0.6 V,the average temperature of the outlet variable structure model was 6℃lower than that of the original structure model,and the average water content of the outlet variable structule model increased by 0.78.At a load current density of 1.046 A/cm2,the power density of the outlet variable structure model was improved by 2.20%over the original structure model.Moreover,in the high-temperature and dry environment,the power density of the variable outlet structure model with a baffle height of 1.1 mm was 2.30%higher than that of the model with a baffle height of 0.3 mm.The results indicate that the variable outlet structure can improve the cell performance by enhancing the cooling performance and water retention performance of the cell,and it has better environmental adaptability in complex environments.关键词
燃料电池/水热管理/保水/冷却Key words
fuel cell/hydrothermal management/water retention/cooling分类
动力与电气工程引用本文复制引用
刘懿,杨旭东,雷基林,何述超,周杰..阴极出口可变结构对空冷型质子交换膜燃料电池的性能影响[J].内燃机工程,2025,46(3):69-78,10.基金项目
云南省基础研究计划项目(202201BE070001-034)Yunnan Basic Research Program(202201BE070001-034) （202201BE070001-034）
