Abstract: In this paper, a bracket with chip structure fixed on the chassis of a fuel cell passenger car is designed, which can carry high-power and high-pressure components of the fuel cell system. Combined with HyperWorks and n Code Design Life, the static strength and fatigue simulation analysis of the bracket are carried out, by optimizing the structure, material and thickness of the support, the strength and life of the support can be improved. And through the durability and reliability test of the whole vehicle and the bench, the sample has been fully verified, avoiding the risk of fracture, deformation and fatigue failure due to deficiencies in design, manufacturing and practical application.

Key words: Fuel cell passenger car; High-power and high-pressure components; Chip structure; Fatigue

摘要： 文章设计了一种固定于燃料电池乘用车底盘，可承载燃料电池系统大功率高压零部件的片式结构支架，结 合 HyperWorks 与 n Code Design Life 疲劳分析软件对支架进行静强度与疲劳寿命仿真分析，通过对支架的结构、材 料、厚度等方面进行优化，实现支架强度与寿命的提升，并通过整车与台架耐久可靠性试验，对样件进行了充分验 证，规避了由于设计、制造与实际应用时出现某些未考虑的原因发生断裂、变形以及疲劳失效的风险。

关键词: 燃料电池乘用车；大功率高压零部件；片式结构；疲劳