Abstract: With the penetration of new energy exceeding 50%, hybrid new energy vehicles are becoming more and more popular, in which the application of high-strength rolled steel battery box is also becoming more and more widespread in the market. In this paper, based on a hybrid battery pack, the structural simulation analysis and optimization of the rolled steel box are carried out. Firstly, the finite element simulation model of the steel battery box is established in HyperMesh, modal, static and random vibration strength analysis are carried out, and structural optimization is carried out for the substandard items in the simulation. After optimization, the rolled steel battery box meets the strength requirements, which provides a reference for the design of subsequent steel battery boxes.

Key words: battery box; rolled steel; random vibration; structural optimization

摘要： 随着新能源渗透率突破 50%，混动新能源汽车越来越受欢迎，其中高强度辊压钢电池 箱体在市场的应用也越来越广。文章基于某款混动电池包，进行辊压钢箱体的结构仿真分析 和优化。首先在 HyperMesh 建立了该钢制电池箱体的有限元仿真分析模型，进行约束模态、 静强度和随机振动强度分析，对仿真不达标项进行结构优化。优化后该辊压钢电池箱体满足 强度要求，为后续钢制电池箱体设计提供参考。

关键词: 电池箱体；辊压钢；随机振动；结构优化