微型纯电动汽车后部碰撞电安全分析与设计  

Analysis and Design of Electric Safety in Micro-BEV Rear Crash

作　　者：曾泽江 王丽娟[1] 陈宗渝[1] 欧阳威 Zeng Zejiang;Wang Lijuan;Chen Zongyu;Ouyang Wei(School of Mechatronics&Electrical Engineering,Nanchang University,Nanchang 330031,China)

机构地区：[1]南昌大学机电工程学院,南昌330031

出　　处：《机械科学与技术》2020年第6期948-953,共6页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(51165034);江西省自然科学基金项目(20132BAB206029)资助。

摘　　要：以某微型纯电动汽车为研究对象,分析其高压电气系统的结构特点,对高压线束进行细化建模,建立了含高压电气系统部件的整车有限元分析模型,选取后部追尾和柱撞两种碰撞工况进行仿真。结果表明,纯电动汽车在后部碰撞工况下高压线束受到破坏以及高压电部件存在安装支架强度不足的问题。进行改进设计后根据碰撞时高压电气系统的损伤情况,确立了纯电动汽车碰撞断电保护控制条件,制定了高压电安全防护控制策略,确保整车的高压电安全。Taking a micro-pure electric vehicle(BEV)as the research object,the paper analyzes the structural characteristics of the high-voltage system(HVS),refines modeling of the high-voltage harness,establishes the finite element model of the vehicle with HVS components,selects the rear-end crash and the rear-cylinder crash.By simulation,as a results,the high-voltage harness is damaged and the strength of the mounting bracket is insufficient in the high-voltage electrical components.After the improved design,according to the damage condition of the HVS in crash,the control conditions of the crash and power-off protection of the BEV were established,and the high-voltage electric safety protection control strategy was formulated to ensure the safety of the high-voltage electric power of the vehicle.

关 键 词：纯电动汽车 碰撞仿真 高压电安全 断电保护 

分 类 号：U469.72[机械工程—车辆工程]