质子交换膜燃料电池封装结构安全性研究

Study on Encapsulation Structure Safety of Proton Exchange Membrane Fuel Cell

针对电堆的封装对质子交换膜燃料电池结构安全性影响的问题进行有限元分析。用Catia建立5种不同螺栓封装位置的10层单体组成的质子交换膜燃料电池电堆的三维模型,用Hypermesh进行网格划分,以最佳封装力和螺栓封装位置为研究目标,在ANSYS Workbench软件中对不同螺栓封装的电堆端板进行应力分布和变形量的分析,选择其中变形量最均匀的电堆端板进行拓扑优化设计。结果表明,电堆模型的最佳螺栓封装力为2500 N,最佳螺栓封装位置在端板的中部位置,拓扑优化后的端板质量减轻14.82%,并对应力分布均匀性有一定提升。

Finite element analysis was used to investigate the influence of reactor packaging on the structural safety of proton exchange membrane fuel cell.The three-dimensional model of proton exchange membrane fuel cell stack composed of ten layers of monomer with five different packaging positions was established by Catia.Hypermesh was used to partition the model.The optimal packaging force and the optimal packaging position were taken as the research objectives.In ANSYS Workbench,the stress distribution and deformation of different bolt packages of the reactor end plate were analyzed and studied,and the reactor end plate with the most uniform deformation was selected for topology optimization design.The results show that the optimal bolt packing force of the reactor model is 2500 N,and the optimal packing position is in the middle of the end plate.The mass of the end plate after topology optimization is reduced by14.82%,and the stress distribution uniformity is improved to some extent.It provides reference for the packaging and endplate design of the reactor.