摘要
为探究冲击载荷作用下质子交换膜燃料电池(PEMFC)电堆电学响应,揭示PEMFC电堆内部力-电耦合机制,对冲击载荷下PEMFC电堆力-电耦合建模方法进行了研究。基于建立的PEMFC电堆力-电耦合模型,系统研究了冲击速度和方向对PEMFC电堆电学响应影响。结果表明,所提出的PEMFC电堆力-电耦合建模方法可以准确模拟出电池内部的力-电耦合特性;PEMFC电堆内部单电池欧姆损耗会随着冲击载荷的增大而增大;同时,冲击载荷会导致气体扩散层(GDL)与双极板肋部产生额外电接触,引起GDL表面电流密度平均值下降以及分布均匀性变差。本研究工作对冲击载荷下PEMFC力-电耦合建模及电学响应研究具有一定的指导意义。
In order to investigate the electrical response of proton exchange membrane fuel cell(PEMFC)stack under impact load,and to reveal the mechanical-electrical coupling mechanism of PEMFC stack,the mechan-ical-electrical coupling modeling method of the PEMFC stack under impact load is studied.A systematic investiga-tion is undertaken to investigate the effect of impact velocity and direction on the electrical response of the PEMFC stack,based on the established mechanical-electrical coupling model of the PEMFC stack.The results show that the proposed method for modeling the mechanical-electrical coupling of the PEMFC stack can accurately simulate the in-herent mechanical-electrical coupling characteristics within the PEMFC stack.The ohmic loss of the single cell in-side the PEMFC stack increases as the shock load increases.Meanwhile,the impact load results in the formation of additional electrical contact between the gas diffusion layer(GDL)and the ribs of the bipolar plate,which causes a reduction in the average value of the current density on the surface of the GDL and deterioration in the distribution uniformity.This study has certain guiding significance for the modeling of PEMFC mechanical-electrical coupling and the study of electrical response under impact load.
作者
任立海
陈黎黎
杨振华
蒋成约
赵清江
刘西
胡远志
Ren Lihai;Chen Lili;Yang Zhenhua;Jiang Chengyue;Zhao Qingjiang;Liu Xi;Hu Yuanzhi(Chongqing University of Technology,Key Laboratory of Advanced Manufacturing Technology for Automobile Parts,Ministry of Education,Chongqing 400054;State Key Laboratory of Vehicle NVH and Safety Technology,Chongqing 401122)
出处
《汽车工程》
北大核心
2025年第1期96-106,共11页
Automotive Engineering
基金
汽车噪声振动和安全技术国家重点实验室开放基金(NVHSKL-202004)
重庆市技术创新与应用发展专项项目(CSTB2023TIAD-STX0036)
重庆理工大学研究生创新项目(gzlcx20232023)资助。
关键词
质子交换膜燃料电池
有限元方法
冲击
力-电耦合
电学响应
proton exchange membrane fuel cell stack
finite element method
impact
mechanical-electrical coupling
electrical response
作者简介
通信作者:蒋成约,教授,博士,E-mail:jiangchengyue@cqut.edu.cn。
