Lightweight Design of Protective Structures of Battery Packs for Bottom-scraping Safety

被引：2

作者：

Wang C. ^{[1
]}

Cheng A. ^{[1
]}

Zhang C. ^{[1
]}

Yu W. ^{[2
]}

He Z. ^{[1
]}

机构：

[1] State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha

[2] College of Automotive Engineering, Liuzhou Vocational &- Technical College, Guangxi, Liuzhou

来源：

Zhongguo Jixie Gongcheng/China Mechanical Engineering | 2023年 / 34卷 / 19期

关键词：

aluminum alloy; battery pack bottom-scraping; lightweight; multi-objective marine predator algorithm(MOMPA); topology optimization;

D O I：

10.3969/j.issn.1004-132X.2023.19.009

中图分类号：

学科分类号：

摘要：

To protect the battery pack from bottom-scraping, a section-layout design method for aluminium alloy protective structures was proposed. Firstly, a simulation model of the bottom-scraping of the vehicle was established and the intrusion target of the battery pack module was defined. The accuracy of the material was verified by three-point static pressure tests and simulation analysis on the anticollision beam. Secondly, the " A " glyph optimal cross-section was determined through topology optimization. Then the effects of different section shapes, installation positions and layout parameters on the bottom-scraping performance were compared and analyzed. The mechanism of bottom-scraping protection was investigated. Finally, hybrid approximation models were constructed and the MOMPA was used to optimize the section-layout of the structures. The results show that the two optimized aluminium alloy protection structures are 59.6% and 46.8% lighter than the original steel structures, respectively, and the battery module intrusions meet the requirements. © 2023 China Mechanical Engineering Magazine Office. All rights reserved.

引用

页码：2343 / 2352

页数：9

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