摘要
动力电池箱体作为动力电池系统的最关键的承重部件,其结构稳定性对整车运行至关重要。文章通过理论分析与有限元仿真分析相结合,详细研究了箱体材料厚度、箱体零件结构以及有无加强板三个方面对箱体局部应力的影响规律以及作用机理。通过HyperMesh软件进行有限元仿真分析,得到四组局部应力产生位置以及局部应力数值。对比分析数据,总结出工程项目中有效降低箱体局部应力的方向:合理的结构设计以及局部应力集中部位增加材料厚度,不仅能充分利用零件自身的弹性变形吸收部分应力而且能有效地将应力传递出去。文章最后通过对优化后的电池箱体进行振动试验,试验结果证明了降低局部应力的优化方向、箱体结构优化设计的有效性和合理性,为后续车载电池箱体结构优化设计提供了一定的参考依据。
As the most critical load-bearing component of the power battery system,the structural stability of the power battery house is crucial to the operation of the vehicle.This paper combines theoretical analysis and finite element simulation analysis to study in detail the influence of three aspects,such as the thickness of the house material,the structure of the house,and the presence or absence of reinforcement plates,on the local stress law and mechanism of the house.The finite element simulation analysis is carried out by HyperMesh software,and four groups of local stress locations and local stress values are obtained.Comparison and analysis of the four groups of local stress simulation results,the direction of the project to effectively reduce the local stress of the house:reasonable structural design can not only make full use of the elastic deformation of the parts themselves to absorb some of the stress,but also can effectively transfer the stress out,as well as increase the thickness of the material at the part of the local stress concentration.The paper also through the optimized battery house for vibration test,the test results prove the optimization direction of reducing local stress,house structure optimization design of the effectiveness and reasonableness,for the follow-up vehicle battery house structure optimization design provides a certain reference basis.
作者
陈燕
王玉
方有为
CHEN Yan;WANG Yu;FANG Youwei(Hefei Gotion High-tech Power Energy Company Limited,Hefei 230011,China)
出处
《汽车实用技术》
2024年第16期27-31,共5页
Automobile Applied Technology
