高拓展性电动钢铝混合车身架构研究和应用

Research and application of high extensibility electric steel-aluminum hybrid body architecture

面对日益严格的环保和政策法规要求,各车企正大力推进电动车的研发与市场投放。目前市场上绝大多数电动车车身平台都是基于燃油车车身平台架构适应性改造匹配而来,受制于燃油车布置、性能等影响以及电动车的专有特点和专有系统要求,基于传统燃油车车身平台架构已不利于电动车的布置和性能提升。本文简述了广汽电动车车身平台架构的发展趋势,提出了新一代电动车钢铝混合车身跨平台架构,此车身架构覆盖从A级到B级车型的模块套件矩阵,其下车体零件数量相比钢制车身架构减少约46%,重量降低25%左右,在达到高性能、轻量化的同时,最大化提升了乘员空间和布置自由度。建立了广汽自主的电动钢铝混合结构车身体系架构并实现车型的投产和上市,正逐步取得良好的经济效益。

In the face of increasingly strict environmental protection and policy and regulation requirements,car companies are vigorously promoting the development and marketing of electric vehicles.At present,most of the electric vehicle body platform in the market is based on the fuel car body platform structure adaptive transformation matching.Subject to the influence of fuel car layout and performance,as well as the proprietary characteristics and system requirements of electric cars,the traditional fuel car body platform architecture is not conducive to the layout and performance improvement of electric cars.This paper briefly describes the development trend of Guangzhou Automobile Corporation(GAC)electric vehicle body platform architecture,and puts forward a new generation of steel-aluminum hybrid body cross-platform architecture.This body architecture covers A matrix of modules for class A to class B models,the number of underbody parts is about 46%less than the steel frame,and the weight is about 25%less,which maximizes the freedom of occupant space and layout while achieving high performance and lightweight.GAC has established its own electric steel-aluminum hybrid structure body system,which has been put into production and put on the market.Good economic benefits are gradually obtained.