汽车工程

汽车工程

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纯电动汽车电驱动总成悬置设计方法研究

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
  • 出版日期:2019-02-25 发布日期:2019-02-25
  • 基金资助:
     

Research on Design Principles of Electric Powertrain Mount of Pure Electric Vehicles

    

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  • Online:2019-02-25 Published:2019-02-25
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摘要： 相比于内燃机的低频发火阶次的机械及燃烧噪音，电动汽车的电驱动总成噪音主要是由电磁力和齿轮啮合产生的高频啸叫阶次噪音[1]。尽管其辐射的声功率远远低于内燃机，但是电机和减速器的高频噪音同样是相当扰人的。驾驶室内的电驱动总成的2000-2500Hz以下频率的噪声主要由结构传递路径贡献。由于电动汽车的驱动电机扭矩大，如何在实现电驱动总成悬置的抗扭性能时尽可能提高悬置隔振性能，是一个挑战。本文通过对电动车和燃油车动力总成振动特性进行对比，对不同悬置布置方案进行对比，以及对影响电驱动总成悬置隔振率的主要因素进行测试分析，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

Abstract: Compared with the mechanical and combustion noise of the low-frequency ignition order of the internal combustion engine, the electric drive assembly noise of electric vehicles is mainly the high-frequency whining order noise generated by the electromagnetic force and gear meshing. Although the radiated sound power is far less than that of an internal combustion engine, the high frequency noise of the motor and the reducer is also annoying. Noise below 2000-2500Hz of the electric drive assembly in the passenger room is mainly contributed by the structural transfer path. Due to the high torque of the driving motor of electric vehicles, it is a challenge to improve the mount isolation performance as much as possible when the anti-torque performance of the electric drive assembly mount is realized. By comparing the vibration characteristics of electric vehicle and traditional vehicle powertrain, comparing different mount layout schemes, and analyzing the main factors affecting the vibration isolation rate of electric vehicle powertrain mount, the general design principles of electric vehicle powertrain mounting system are summarized.

Key words: Electric Car, Electric Drive Assembly, Mount, Isolation

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