摘要
首先针对某款纯电动汽车的高强钢电池包进行了结构改进设计和轻质合金材料替换,提高了结构在安全和散热方面的性能,且电池包体的轻便性也得以改善;然后采用有限元仿真分析方法检验了其静态性能,并在现有设计基础上进行了细节拓扑优化和全局尺寸优化,同时根据优化数值的分布趋势,引入载荷比概念,分析得到了不同设计件在参数化设计中的取值规律;最后基于仿真与试验分析,验证了新结构的强度和刚度性能。新设计在保证电池包最大变形小于1 mm的同时,完成了电池包结构12.3%的轻量化,整车续航里程进而提升11.1%。
Firstly,structural improvement design and light alloy material replacement for high-strength steel battery pack of a pure electric vehicle were carried out,which improvd the safety and heat dissipation performance of the structure,and the lightness of the battery pack body was also improved.Then,the static performance was checked by finite element simulation analysis method.Based on the existing design,detailed topology optimization and global size optimization were carried out.At the same time,based on the distribution trend of the optimized values,the concept of load ratio was introduced,and the law of value of different designed parts in parameterized design was anlyzed and obtained.Finally,based on simulation and experimental analysis,the strength and rigidity performance of the new structure was verified.The new design achieves a 12.3%lightweight of the battery pack structure while ensuring that the maximum deformation of the battery pack is less than 1 mm,and the vehicle mileage is increased by 11.1%.
作者
谢晖
孙延
王杭燕
XIE Hui;SUN Yan;WANG Hang-yan(State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,School of Mechanical and Vehicle Engineering,Hunan University,Changsha 410082,China)
出处
《塑性工程学报》
CAS
CSCD
北大核心
2020年第12期88-96,共9页
Journal of Plasticity Engineering
基金
国家重点研发计划项目(2017YFB0304405)
佛山广工大研究院创新人才团队计划项目。
关键词
动力电池包
改进设计
轻量化
多目标优化
载荷比
power battery pack
improvement design
lightweight
multi-objective optimization
load ratio
