燃料电池堆力学结构研究与端板设计优化  

Study on Mechanical Structure and End Plate Design Optimization of Fuel Cell Stack

作　　者：刘志伟[1] 杨海玉[1] 胡杨月 

机构地区：[1]东方电气集团中央研究院,成都611731

出　　处：《东方电气评论》2015年第2期8-14,共7页Dongfang Electric Review

摘　　要：针对燃料电池堆端板装配过程中易发生变形的现象,以ANSYS软件为工具建立了电堆的三维有限元模型,研究了端板在采用不同材料、结构和功能设计时的变形分布和应力分布。结果表明,通过选择合适的端板材料、优化端部结构、控制预紧力分配以及整合端部功能,可以有效地减小电堆的装配变形,改善密封效果以及提高比功率密度等性能指标。通过实测电堆的节电压分布验证了端板设计的合理性。A throe dimensional finite element model is established to simulate the end plate deformation of fuel cell stack in its assembly process using ANSYS software. Base on this model, the distributions of stress and strain over different end plate structures are studied in terms of material type, stack design and function requirement. The results indicate that the deformation of the stack in the assembly process can be significantly reduced by end plate material selection, structure optimization, proload control and function integration. Meanwhile, with lower end plate deformation during fuel cell system operation, the sealing property and specific power density of stack can also be improved. Finally the end plate structure design and robust assembly process are verified by stack performance and cell voltage distribution profile.

关 键 词：燃料电池 端板 三维有限元模型 应力应变 比功率密度 

分 类 号：TM911.4[电气工程—电力电子与电力传动]