基于正面碰撞的新能源电动车前舱模块目标设计与优化

Object of Front Cabin Space Layout and Vehicle Acceleration of New Energy Electric Vehicle

分析了目前新能源电动车正面碰撞特点,提出解决方案和基本思路、应用方法流程,不仅适用于概念阶段(T/N前期),也适用于项目中后期(N后期/A/B版),最终形成前舱数据库和截面数据库,为车型开发提供参考和指导。首先,根据前舱空间尺寸,建立整车加速度(双梯度)矩阵;其次,结合乘员约束系统仿真,得出最优加速度;然后,提出前舱布置空间、车体加速度(双梯度)目标要求,进而可以得到车体缓冲效率、车身刚度等信息。

The paper analyzed current crash characteristics of the new energy electric vehicle produced by our company, and proposed plan and some basic idea, and application process flow. It was not only applicable to the conception phase of project （NIP prophase）, but also to middle and late phase of project. Finally, database of front cabin and section was formed, providing reference and guidance for vehicle development. Firstly, according to the front cabin space size, vehicle acceleration matrix（dual gradient pulse） was established. Next, optimal acceleration was obtained, combining with the simulation result of occupant restraint system. Then, target requirement of the front cabin space layout and vehicle acceleration （dual gradient pulse）was proposed, and then buffer efficiency of vehicle and body rigidity and so on was obtained.