风冷燃料电池结构优化及装配压力设计  

Structural optimization and assembly pressure design of air-cooled fuel cell

作　　者：杨昆鹏 杨海沦 裴后昌 宋少云 YANG Kunpeng;YANG Hailun;PEI Houchang;SONG Shaoyun(School of Mechanical Engineering,Wuhan Polytechnic University,Wuhan Hubei 430048,China)

机构地区：[1]武汉轻工大学机械工程学院,湖北武汉430048

出　　处：《电源技术》2023年第3期362-365,共4页Chinese Journal of Power Sources

摘　　要：风冷质子交换膜燃料电池简化了传统燃料电池的结构,极大地增强了其便携性而备受关注。风冷燃料电池的装配压力以及密封件的设计对于电池的性能具有重要影响。通过建立三维模型,运用有限元方法对风冷石墨流场板及密封件进行结构力学仿真分析。结果表明当直流道石墨流场板中密封圈的厚度为0.50 mm,双极板长度为225 mm,装配压力为2.5 MPa时,风冷燃料电池双极板应力分布均匀性最好,电池性能最优。Air-cooled proton exchange membrane fuel cells have attracted much attention for simplifying the structure of conventional fuel cells and greatly enhancing their portability.The assembly pressure of air-cooled fuel cells and the design of seals have an important impact on the performance of the cell.A three-dimensional model was established and a finite element method was applied to simulate the structural mechanics of the aircooled graphite flow field plate and the seal.The results show that when the seal ring thickness is 0.50 mm,the length of the bipolar plate is 225 mm and the assembly pressure is 2.5 MPa in the graphite flow field plate of the DC channel,the stress distribution uniformity of the bipolar plate of the air-cooled fuel cell is the best and the battery performance is the best.

关 键 词：燃料电池 仿真分析 装配压力 密封圈 双极板 

分 类 号：TM911[电气工程—电力电子与电力传动]