欢迎访问《汽车安全与节能学报》，
汽车安全与节能学报

JASE ›› 2019, Vol. 10 ›› Issue (1): 112-118.DOI: 10.3969/j.issn.1674-8484.2019.01.015

• 汽车节能与环保 • 上一篇    

电动汽车全新架构前期开发中的多学科集成优化设计

方 健，史国宏   

  1. （泛亚汽车技术中心有限公司，上海 201201，中国）
  • 收稿日期:2018-05-25 出版日期:2019-03-31 发布日期:2019-04-01
  • 作者简介:第一作者 / First author ： 方健 (1972—)，男( 汉)，安徽，高级工程师。E-mail: Jian_Fang@patac.com.cn。

Multi-disciplinary integrated optimization design in new architecture advance development of electrical vehicles

FANG Jian, SHI Guohong   

  1. (Pan Asia Technical Automotive Center Co., Ltd., Shanghai 201201, China)
  • Received:2018-05-25 Online:2019-03-31 Published:2019-04-01

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摘要：

       提出了一种满足电动汽车（EV）各项性能要求的全新车身、底盘、动力电池框架一体化的结构集成设计方案。基于物理尺寸建立拓扑优化设计空间，采用变密度拓扑优化方法，结合等效静态载荷方法（ESL），综合考虑静、动态载荷工况，以最小加权应变能为优化目标，通过对整车拓扑优化结果的解读，找到电动车架构主要载荷路径，并进行结构集成设计及计算机辅助工程设计（CAE）仿真验证。结果表明：整车刚度、电池安装在车身上的整体模态满足设计要求；32 km/h 刚性柱垂直侧面碰撞工况下电池框架未发生明显变形；架构载荷路径在满足整车布置的要求下，同时满足整车性能及电池局部性能要求，并实现系统的最优解和轻量化。

关键词: 电动汽车(EV) , 前期架构 , 一体化设计 , 拓扑优化 , 等效静态载荷（ESL）

Abstract:

A topology design space was established based on the physical dimensions to find a new integrated engineering solution considering different subsystems (body-in-white, chassis and battery structure) for meeting the performance requirements of an electrical vehicle (EV). Compound effects of static and dynamic load were investigated through equivalent static load (ESL) method in density-based topology. Minimum weighted strain energy was defined as the topology optimization objective. The key load path of the EV was find out through interpretation of the topology optimization results. And also the load path was validated in computer aided engineering (CAE) model. The result shows that the vehicle global torsion stiffness and modal of battery in the vehicle can satisfy the requirements, and the battery frame does not deform obviously under 32 km/h side rigid pole impact analysis. The architecture load path of the EV satisfies the requirements of the whole vehicle package and performance and local performance of battery. The integration design is also the optimal and lightweight solution.

Key words: electrical vehicle (EV) , advanced architecture ,  integration design , topology optimization ,  equivalent , static loads (ESL)