电动汽车快换电池锁止装置设计及仿真分析  

Design and Simulation Analysis of Quick-Change Battery Locking Device for Electric Vehicles

作　　者：孟飞 涂传旻 徐尤南 彭兴禹 Meng Fei;Tu Chuanmin;Xu Younan;Peng Xingyu(School of Mechatronics and Vehicle Engineering,East China Jiaotong University,Nanchang 330013,China;Key Laboratory of Conveyance and Equipment of Ministry of Education,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学机电与车辆工程学院,江西南昌330013 [2]华东交通大学载运工具与装备教育部重点实验室,江西南昌330013

出　　处：《华东交通大学学报》2023年第6期96-102,共7页Journal of East China Jiaotong University

基　　金：国家自然科学基金项目(52075171);江西省研究生创新专项资金项目(YC2021-S466)。

摘　　要：针对电动汽车底盘换电的电池包,设计了一种快速换电的锁止装置,以实现对电池的快速锁止和解锁。为了验证该装置的结构安全性,通过有限元ANSYS软件分析了该装置在两种典型极限工况下的静态特性和模态特性。结果表明:该装置在两种工况下的最大应力位于上锁体处,其最大应力值分别为207.63 MPa和264.18 MPa,满足所选材料的强度设计要求;该装置的前6阶模态固有频率均大于电动汽车所受的激励频率,汽车在行驶过程不会与该装置发生共振。Aiming at the battery pack of chassis power exchange for electric vehicles,a locking device for rapid power change is designed to realize the rapid locking and unlocking of the battery.In order to verify the structural safety of the device,the static and modal characteristics of the device under two typical limit conditions were analyzed by finite element ANSYS software.The results show that the maximum stress of the device under the two working conditions is located at the lock body,and its maximum stress values are 207.63 MPa and 264.18 MPa,respectively,which meet the strength design requirements of the selected materials,and the natural frequencies of the first six modes of the device are greater than the excitation frequencies of the electric vehicle,so the car will not resonate with the device during driving.

关 键 词：锁止装置 静态特性 模态特性 

分 类 号：TH122[机械工程—机械设计及理论] U473[机械工程—车辆工程]