纯电平台钢铝混合车身机舱框架结构设计

Structural Design of Steel-Aluminum Hybrid Engine Room Frame of Pure Electric Platform

车身机舱框架结构是汽车发生正碰时吸能和传递载荷的重要总成,其耐撞性和轻量化设计影响到整车碰撞性能及轻量化水平;基于某款纯电动车型,采用钢铝混合材料完成机舱的框架结构设计,保证50km/h全正碰试验及64km/h偏置碰试验过程中,机舱框架稳定压溃变形,吸能模式合理,达到碰撞性能目标;同时保证机舱框架上重要安装点的性质指标。

The BIW engine room frame structure is one of the most important assemblys which absorb the impact energy and transfer load,Its crashworthiness and lightweight design affect the crash performance and lightweight level of the whole vehicle.Based on a pure electric vehicle,frame structure design of engine room with steel aluminum mixture,ensure the engine room frame is stable in collapse and deformation,the energy absorption mode is reasonable,and the collision performance target is achieved during 50km/h full frontal impact test and 64km/h offset impact test.At the same time,ensure the property index of the important installation points on the engine room frame.