汽车工程

汽车工程 ›› 2019, Vol. 41 ›› Issue (11): 1235-1242.doi: 10.19562/j.chinasae.qcgc.2019.011.002

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纯电动汽车电驱动总成悬置设计原则研究

康强1,2,3, 顾鹏云2, 左曙光3   

  1. 1.浙江汽车工程学院,杭州 310000;
    2.浙江吉利汽车研究院有限公司,宁波 315000;
    3.同济大学新能源汽车工程中心,上海 201800
  • 收稿日期:2018-11-20 出版日期:2019-11-25 发布日期:2019-11-28
  • 通讯作者: 康强,高级工程师,博士,E-mail:kangqiangok@163.com

A Research on Design Principles for Electric Drive

Assembly Mounts of Pure Electric VehiclesKang Qiang1,2,3, Gu Pengyun2, Zuo Shuguang3   

  1. 1.Zhejiang Automotive Engineering Institute, Hangzhou 310000;
    2.Geely Automobile Research Institute, Ningbo 315000;
    3.New Energy Automobile Engineering Center, Tongji University, Shanghai 201800
  • Received:2018-11-20 Online:2019-11-25 Published:2019-11-28

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摘要： 与内燃机的机械和低频发火阶次的燃烧噪声不同,电动汽车电驱动总成的噪声主要是由电磁力和齿轮啮合产生的高频啸叫声。电驱动总成的2 000-2 500 Hz以下频率的噪声主要通过结构传递路径传入驾驶室内。由于电动汽车的驱动电机转矩大,故电驱动总成悬置在保证抗扭性能的前提下应尽可能提高隔振性能。本文中对电动车和燃油车动力总成振动特性以及不同悬置布置方案下绕横向轴角位移和悬置力进行对比,分析了影响电驱动总成悬置隔振率的主要因素,最后总结了电动汽车电驱动总成悬置的一般设计原则。

关键词: 电动汽车, 电驱动总成, 悬置, 隔振, 设计原则

Abstract: Different from the mechanical noise and the combustion noise of low-frequency order ignition in internal combustion engine, the noise of electric drive assembly in electric vehicles is mainly the high-frequency whistling generated by electromagnetic force and gear meshing. Noise below 2000-2500 Hz of electric drive assembly propagates into vehicle cabin mainly through structural paths. In view of the high torque of the driving motor of electric vehicles, the vibration isolation performance of electric drive assembly mounts should be as high as possible while ensuring their torsion resistant performance. In this paper, the powertrain vibration characteristics of electric vehicle and traditional fuel vehicle as well as the angular displacement around transverse axis and forces of mounts in different mount layout schemes are compared, and the main factors affecting the vibration isolation rates of electric drive assembly are analyzed. Finally, the general design principles for the drive assembly mounts of electric vehicle are summarized.

Key words: electric vehicle, electric drive assembly, mount, isolation, design principle