侧面柱碰撞条件下电动汽车电池系统结构优化

摘要/Abstract

摘要：

将动力电池短路失效分析引入电动汽车侧面柱碰撞研究中，利用动态拓扑优化方法对某电池系统结构进行优化设计,基于拓扑结果搭建具有更佳承载路径的新型电池系统结构，同时通过正交试验对其厚度分布进行优化。相比于原结构，新结构在不增大质量的情况下极大地减小了侧面柱碰撞后电池系统的结构变形和电池短路失效，显著提高了动力电池的碰撞安全性。

关键词: 电动汽车, 侧面柱碰撞安全, 电池系统结构, 拓扑优化

Abstract: The short-circuit failure analysis of power cells was introduced into electric vehicle pole side impact researches, the dynamic topology optimization method was used to optimize the design of battery system structures. A new battery system structure with better load paths was built based on the topology results, and the thickness distribution was optimized by orthogonal test. Compared with the original structure, the new structure greatly reduces the structural distortions and battery failures under pole side impacts without increasing mass, and significantly improves the crash safety of the power batteries.

Key words:

electric vehicle, pole side impact safety, power battery system structure, topology optimization

中图分类号:

U469.72

陈涛1;李宁宁1;李卓1;李奇奇1;陈少伟1;张茜2. 侧面柱碰撞条件下电动汽车电池系统结构优化[J]. 中国机械工程.

CHEN Tao1;LI Ningning1;LI Zhuo1;LI Qiqi1;CHEN Shaowei1;ZHANG Qian2 . Structural Optimization of Electric Vehicle Battery Systems under Pole Side Impacts[J]. China Mechanical Engineering.

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