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作 者:祝文涛 廖书信 邱殿凯 彭林法[1] ZHU Wentao;LIAO Shuxin;QIU Diankai;PENG Linfa(School of Automotive Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)
机构地区:[1]上海交通大学机械与动力工程学院,上海200240
出 处:《电源技术》2025年第4期824-830,共7页Chinese Journal of Power Sources
基 金:国家重点研发计划课题(2023YFB4006304)。
摘 要:针对质子交换膜燃料电池(PEMFC)电堆反复组装引起装配力变化,输出性能衰减的问题,基于电堆实际装配流程设计了循环压缩实验,揭示了循环压缩对气体扩散层力学性能、体电阻以及接触电阻的影响规律,并提出针对不同装配次数的压缩率补偿方案。研究发现,保持相同的压缩率,气体扩散层的压力和厚度衰减主要发生在第二次装配,压力衰减了6.24%,厚度减小4.64%。此外,气体扩散层的体电阻和接触电阻分别增大了2.82%和7.77%。在此基础上,采用满意度函数设计了装配补偿方案,获得不同装配次数时的压缩率区间和最优压缩率,可为质子交换膜燃料电池电堆装配质量优化提供参考。Repeated assembly of proton exchange membrane fuel cell(PEMFC)stacks causes assembly force change and output performance degradation.In this study,a cyclic compression experiment was conducted to investigate the effects of cyclic compression on the mechanical property,body resistance and contact resistance of the gas diffusion layer,and a compression rate compensation scheme for different assembly times was proposed.It is found that,with the same compression rate,the pressure and thickness attenuation of the gas diffusion layer mainly occur in the second assembly,with a pressure attenuation of 6.24%and a thickness reduction of 4.64%.In addition,the body resistance and contact resistance of the gas diffusion layer are enhanced by 2.82%and 7.77%,respectively.Hence,an assembly compensation scheme was designed using the satisfaction function to obtain the compression rate interval and the optimal compression rate at different assembly times,which can provide a reference for the optimization of the assembly quality of the PEMFC stack.
分 类 号:TM911.4[电气工程—电力电子与电力传动]
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