摘要
为降低车载动力电池质量,优化设计2种电池包结构方案,综合运用有限元仿真、约束模态和静力学分析对电池包模型进行计算。结果表明:与原模型相比,方案一电池包质量减少8%,但1阶模态频率降低8 Hz;方案二电池包质量减少6%,1阶模态频率增加1 Hz,急转弯工况下最大应力减少17.66 MPa,最大变形减少0.192 mm;方案二更有利于增加电池包的使用寿命。本研究可为电池包结构轻量化改进提供指导思路。
In order to reduce the quality of on-board power battery,two kinds of battery pack structure schemes are optimized.The battery pack model is calculated by finite element simulation,constrained modal analysis and static mechanical analysis.The results show that compared with the original pack,the overall weight reduction ratio of the battery packed in the first scheme is 8%,and the first-order frequency is reduced by 8 Hz.In scheme 2,the overall weight reduction ratio of the battery packed is 6%,the first-order frequency is increased by 1 Hz,the maximum stress in the ultimate condition is reduced by 17.66 MPa,and the maximum deformation is reduced by 0.192 mm.Scheme 2 is more beneficial to increase the life of the battery pack.The research can provide guidance for the improvement of battery pack structure lightweight.
作者
刘娜
高媛媛
崔长青
刘鹏
王成诺
刘永辉
LIU Na;GAO Yuanyuan;CUI Changqing;LIU Peng;WANG Chengnuo;LIU Yonghui(School of Mechanical and Electrical Engineering, Shandong Jianzhu University, Jinan 250101, China;Key Laboratory of Vehicle Detection and Diagnosis and Repair Technology of Transportation Industry, Jinan 250357, China;School of Automotive Engineering, Shandong Jiaotong University, Jinan 250357, China)
出处
《内燃机与动力装置》
2021年第4期26-30,共5页
Internal Combustion Engine & Powerplant
基金
山东省研究生教育质量提升计划项目(SDYAL18079)
运输车辆检测、诊断与维修技术交通行业重点实验室开放基金项目(JTZL2004)。
关键词
动力电池包
有限元分析
模态
结构优化
power battery pack
finite element analysis
mode
structure optimization
