Although the electric vehicles (EVs) have become the main development of the automotive industry, there is still very limited knowledge about the design method of EVs’ body structure. This paper substantially increases this limited knowledge by developing an EV’s aluminum alloy body frame structure design (EVFD) method based on battery arrangements. The main concept of the EVFD approach is the development of the parametric knowledge base to facilitate performance driven design of body structure in concept design stage, including the battery sub-libraries designed by vehicle power performances and the modular body frame structure sub-libraries and cross section of profile sub-libraries designed by structure performances. The layout of vehicle is firstly determined based on battery volume which calculated on the basis of power performance of EVs. And then, the body frame structures are designed by multi-load topology optimization and multi-objective parametric optimization based on the body structure performance, considering the battery layout and its mass distribution. The developed body structure knowledge base is screened through comparing their structural mechanical properties. The feasibility and accuracy of selected EV’s aluminum alloy body frame structure is verified by experiment. In this paper, the case study demonstrates that the proposed EVFD method based on battery arrangement can be effectively used to design aluminum alloy body frame structure of EVs, which provides a reference to other EV’s body structure design. Due to the performance driven design concept employed, the designed body structure for EV meets the requirements of lightweight, dynamic performance, and structural mechanical properties.

尽管电动汽车（EV）已成为汽车工业的主要发展方向，但对电动汽车车身结构的设计方法的了解仍然非常有限。本文通过开发基于电池布置的 EV 铝合金车身框架结构设计 (EVFD) 方法，大大增加了这一有限的知识。EVFD方法的主要概念是开发参数化知识库，以促进概念设计阶段车身结构的性能驱动设计，包括由车辆动力性能设计的电池子库和模块化车身框架结构子库和交叉根据结构性能设计的剖面子库部分。车辆的布局首先根据电动汽车的动力性能计算的电池容量来确定。然后，基于车身结构性能，考虑电池布局及其质量分布，通过多载荷拓扑优化和多目标参数优化设计车身框架结构。通过比较它们的结构力学性能，筛选开发的车身结构知识库。通过实验验证了所选电动汽车铝合金车身框架结构的可行性和准确性。在本文中，案例研究表明，所提出的基于电池排列的 EVFD 方法可以有效地用于设计电动汽车的铝合金车身框架结构，为其他电动汽车的车身结构设计提供参考。由于采用了性能驱动的设计理念，为电动汽车设计的车身结构满足轻量化、动态性能、