基于OptiStruct的电动汽车电池包结构仿真及验证  

Simulation and Verification of Battery Pack Structure of Electric Vehicle Based on OptiStruct

作　　者：卞烨峰 褚超美[1] Bian Yefeng;Chu Chaomei(Shanghai University of Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学,上海市200093

出　　处：《农业装备与车辆工程》2020年第5期131-134,共4页Agricultural Equipment & Vehicle Engineering

摘　　要：电池包的安全性能是电动汽车开发时的重要考察项,在电池包结构需要做出改动的情况下,重新对电池箱结构强度进行验证是非常必要的。通过HyperMesh建立电池包的有限元模型,并进行静态载荷分析,结果表明,在3种典型工况下,结构未发生失效,其安全系数满足要求。然后,基于OptiStruct进行电池包随机振动分析,确认结构失效的最危险位置,最后按照国标(GB/T31467)的要求进行随机振动试验。试验结果表明:该动力电池包满足在通过不平路面引起的随机振动下的安全性能要求。说明在结构修改之后,该电池包依然满足安全性能要求。The safety performance of battery pack is an important consideration in the development of electric vehicle.When the battery pack structure needs to be changed,it is necessary to re-verify the structural strength of the battery pack.The finite element model of the battery pack is firstly established through HyperMesh,and the static load is analyzed.The results show that under three typical working conditions,the structure has no failure and its safety coefficient meets the requirements.Then,based on OptiStruct,the random vibration analysis of the battery pack is performed to identify the most dangerous location for structural failure.Finally,random vibration test is carried out according to the requirements of GB/T31467.The test results show that the power battery pack meets the safety performance requirements under random vibration caused by uneven road surface.

关 键 词：电动汽车 电池包 静态载荷分析 随机振动 

分 类 号：U469.72[机械工程—车辆工程]