PEMFC膜电极组件接触压力分布仿真研究  

Simulation study on contact pressure distribution of PEMFC mem‐brane electrode components

作　　者：任桂 王影 邢彦锋 曹菊勇 缪雪龙 REN Gui;WANG Ying;XING Yanfeng;CAO Juyong;MIAO Xuelong(School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science of China,Shanghai 201600,China)

机构地区：[1]上海工程技术大学机械与汽车工程学院,上海201600

出　　处：《电源技术》2024年第7期1334-1339,共6页Chinese Journal of Power Sources

基　　金：上海市自然科学基金(20ZR1422600)。

摘　　要：膜电极组件(MEA)上接触压力分布对质子交换膜燃料电池(PEMFC)性能有显著影响。建立了PEMFC三维单电池模型,研究了产品装配过程中端板材料和厚度、密封垫硬度对MEA接触压力分布的影响。在工作工况下,使用热力耦合方法模拟化学反应引起的热效应,研究了温度对MEA接触压力分布的影响。结果表明,端板材料与厚度对接触压力分布均匀性的影响较大,随着密封垫硬度增大,接触压力的均匀性得到改善,但影响了密封效果。此外,温度升高不仅影响MEA上接触压力,也使燃料电池密封性能降低。The contact pressure distribution on the membrane electrode assembly(MEA)has a significant effect on the performance of proton exchange membrane fuel cell(PEMFC).A three-dimensional single-cell model of PEMFC was established.Effects of end plate material and thickness,and gasket hardness on the contact pressure distribution of MEA during the product assembly process were investigated.The effect of temperature on the MEA contact pressure distribution was investigated by using the thermodynamic coupling method to simulate the thermal effect caused by the chemical reaction under the working condition.The results show that the material and thickness of the end plate have a greater influence on the uniformity of the contact pressure distribution,and the uniformity of the contact pressure is improved with the increase of the gasket hardness,but the sealing effect is affected.In addition,the increase in temperature not only affects the contact pressure on the MEA,but also reduces the sealing performance of the fuel cell.

关 键 词：质子交换膜燃料电池(PEMFC) 接触压力 MEA 密封垫硬度 热力耦合 

分 类 号：TM911[电气工程—电力电子与电力传动]