侧面柱碰撞条件下电动汽车电池系统结构优化  

Structural Optimization of Electric Vehicle Battery Systems under Pole Side Impacts

作　　者：陈涛[1] 李宁宁[1] 李卓[1] 李奇奇[1] 陈少伟[1] 张茜 CHEN Tao;LI Ningning;LI Zhuo;LI Qiqi;CHEN Shaowei;ZHANG Qian(State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha,410082;HBIS Group Tangsteel Company Technology Center,Tangshan,Hebei,063000)

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,长沙410082 [2]河钢集团唐钢公司技术中心,唐山063000

出　　处：《中国机械工程》2020年第9期1021-1030,共10页China Mechanical Engineering

基　　金：国家重点研发计划资助项目(2016YFE0102200)。

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。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.

关 键 词：电动汽车 侧面柱碰撞安全 电池系统结构 拓扑优化 

分 类 号：U469.72[机械工程—车辆工程]