中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊
重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2021, Vol. 40 ›› Issue (11): 128-134.DOI: 10.3969/j.issn.1674-0696.2021.11.19

• 交通装备 • 上一篇    

纯电动汽车轻量化机舱支架总成优化与验证

丁明德1，张鹏2，刘波3   

  1. (1. 重庆文理学院 材料表界面科学重庆市重点实验室，重庆 402160； 2. 重庆邮电大学移通学院 智能工程学院，重庆 401520； 3. 重庆长安汽车股份有限公司，重庆 400023)
  • 收稿日期:2020-03-02 修回日期:2020-08-19 发布日期:2021-11-24
  • 作者简介:丁明德(1986—)，男，山东日照人，高级工程师，硕士，主要从事复合材料及汽车轻量化研究方面的工作。E-mail：mingdeding@126.com 通信作者：张鹏(1988—)，男，重庆人，工程师，硕士，主要从事汽车零部件产品开发和轻量化研究方面的工作。E-mail：493131698@qq.com
  • 基金资助:
    国家重点研发计划“新能源”汽车专项（2016YFB0101703、2016YFB0101704、2016YFB0101601）； 重庆市重点产业共性关键技术创新专项重点研发项目（cstc2018jszx-cyzdX0138）；重庆市科委创新应用示范项目（2018jscx-msybX0008）；重庆市普通本科高校新型二级学院建设项目（渝教高发（2018）22号）

Optimization and Verification of the Lightweight Engine Room Bracket of Electrical Vehicle

DING Mingde1, ZHANG Peng2, LIU Bo3   

  1. (1.Chongqing Key Laboratory of Materials Surface & Interface Science, Chongqing University of Arts and Sciences, Chongqing 402160, China; 2. School of Intelligent Engineering, College of Mobile Telecommunications, Chongqing University of Posts and Telecommunications, Chongqing 401520, China; 3. Chongqing Changan Automobile Co., Ltd., Chongqing 400023, China)
  • Received:2020-03-02 Revised:2020-08-19 Published:2021-11-24

PDF

摘要： 为了满足纯电动汽车轻量化的需求，针对长安某纯电动汽车结构功能件机舱支架总成进行了复合材料轻量化开发，基于性能及成本因素选用了片状模塑料（sheet molding compound, SMC），对该SMC机舱支架总成进行了CAE分析及台架疲劳振动试验，根据试验分析结果进行了分析模型及结构优化，并对优化后的SMC机舱支架总成进行了试验验证。研究结果表明，悬挂重量对复合材料机舱支架总成的性能有较大影响，CAE建模应体现悬挂重量，分析模型及结构改进后的SMC机舱支架总成可以满足强度及疲劳耐久要求；相对于金属机舱支架总成，SMC部件可以实现2 kg，减重率为31.3%，轻量化效果明显，SMC部件成本相对于金属部件成本只增加20元，每公斤减重的成本为10元，成本增加可以接受，具有大批量应用前景；应用SMC复合材料，可以大量减少生产工序，取消焊接流程，能够明显降低能源消耗，同时降低了排放和资源消耗，符合国家节能环保政策，为纯电动车及汽车结构功能件轻量化开发提供了一个很好的方向。

关键词: 车辆工程；纯电动汽车；轻量化；机舱支架总成 ；片状模塑料

Abstract: In order to meet the lightweight requirements of pure electric vehicles, a compound material lightweight development was carried out for the engine room support assembly of a pure electric vehicle of Changan. Sheet molding compound (SMC) was selected based on performance and cost factors, and CAE analysis and bench fatigue vibration test were carried out for the SMC engine room support assembly. According to the test analysis results, the analysis model and structure optimization were carried out, and the optimized SMC nacelle support assembly was verified by test. Research results show that the suspension weight has a great impact on the performance of the composite engine room support assembly, and CAE modeling should reflect the suspension weight. The analysis model and the improved SMC engine room support assembly can meet the requirements of strength and fatigue durability. Compared with the metal engine room bracket assembly, SMC component can achieve a 2kg weight reduction with a weight reduction rate of 31.3%, whose lightweight effect is obvious. Compared with the cost of metal parts, the cost of SMC components only increases by 20 yuan, and the cost of weight reduction per kilogram is 10 yuan. The cost increase is acceptable and has the prospect of mass application. The application of SMC composite materials can greatly reduce the production process, cancel the welding process and significantly reduce the energy consumption. At the same time, it reduces emissions and resource consumption. It conforms to the national energy conservation and environmental protection policy and provides a good direction for the lightweight development of pure electric vehicles and automotive structural functional parts.

Key words: vehicle engineering; electrical vehicle; lightweight; engine room bracket assembly; sheet molding compound (SMC)

中图分类号: