Optimum Structural Design of Fuel Cell Stacks for Improving the Resistance to Mechanical Shock

2020 IEEE Vehicle Power and Propulsion Conference (VPPC) Pub Date : 2020-11-01 DOI:10.1109/VPPC49601.2020.9330904

Huihui Dong, Zhang Yanyi, Wang Renguang, Liu Lin, Hou Yongping, Guo Shuaishuai

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Abstract

for improving the fuel cell stack's resistance to mechanical shock, a finite element model was established using ABAQUS, and used to optimally design the mechanical structure of the fuel cell stack from perspectives of bolt packaging and end plate optimizing. According to the analysis results, the packaging torques of the fuel cell stack is within a reasonable limit under the bolt packaging method; the smaller the better. An optimal performance has been gotten with six bolts. And the ratios for the best horizontal position and the best longitudinal distribution are 5mm and 0.5 respectively. Besides, with the thickness of the front end plate being 20mm, the best shock resistance can be obtained, and the weight of the front end plate can also be reduced, which contributing to the lightweight of the fuel cell stack. In comparison with aluminum alloy and stainless steel, the epoxy resin is recommended to be the material of the front end plate, which can provide the best shock resistance and the lightest weight.

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提高燃料电池堆抗机械冲击性能的优化结构设计

为了提高燃料电池堆的抗机械冲击能力，利用ABAQUS软件建立了燃料电池堆的有限元模型，并从螺栓封装和端板优化两方面对燃料电池堆的机械结构进行了优化设计。分析结果表明，螺栓封装方式下燃料电池堆封装扭矩在合理范围内;越小越好。采用6个螺栓时得到了最优的性能。最佳水平位置和最佳纵向分布的比值分别为5mm和0.5。此外，当前端板厚度为20mm时，可以获得最佳的抗冲击性能，并且还可以减轻前端板的重量，从而有助于燃料电池堆的轻量化。与铝合金和不锈钢相比，推荐环氧树脂作为前端板的材料，它可以提供最好的抗震性和最轻的重量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2020 IEEE Vehicle Power and Propulsion Conference (VPPC)

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