The invention discloses a dual-motor planetary gear driving system of a pure electric vehicle and a switching method. In the driving system, a first motor is fixedly connected with an input gear through a first input shaft; a first brake is arranged on the first input shaft and is used for locking the input gear; the second motor is fixedly connected with the sun gear through a second input shaft, and a second brake is arranged on the second input shaft and used for locking the sun gear; the input gear is meshed with outer teeth of the gear ring; inner teeth of the gear ring and the sun gear are meshed with a plurality of planet gears which are positioned between the inner teeth of the gear ring and the sun gear and mounted on the planet carrier; a clutch is arranged between the second input shaft and the gear ring and used for combining the gear ring and the sun gear. The power output mechanism is coaxially connected to the output end of the planet carrier through a main speed reducer driving wheel. The integrated design is adopted, the space occupied by the driving system is reduced, the limitation of a single-motor driving system and the complexity of the structure of a multi-motor driving system are solved, the working modes are more diversified, and the economical efficiency and the dynamic property are better.

    本发明公开了一种纯电动汽车双电机行星齿轮驱动系统、切换方法,驱动系统中第一电机通过第一输入轴与输入齿轮固连;第一输入轴上设有第一制动器,用以锁止输入齿轮;第二电机通过第二输入轴与太阳轮固连,第二输入轴上设有第二制动器,用以锁止太阳轮;输入齿轮与齿圈的外齿啮合;齿圈内齿、太阳轮与位于两者之间安装在行星架上的多个行星轮相啮合;第二输入轴与齿圈之间设有离合器,用以结合齿圈与太阳轮;动力输出机构通过主减速器主动轮同轴连接在行星架的输出端。本发明采用集成设计,减少了驱动系统所占空间,解决了单电机驱动系统的局限性以及多电机驱动系统结构的复杂性,工作模式更加多样,具有更优的经济性和动力性。


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    Title :

    Pure electric vehicle dual-motor planetary gear driving system and working mode switching method


    Additional title:

    纯电动汽车双电机行星齿轮驱动系统、工作模式切换方法


    Contributors:
    XIAO ZHENGMING (author) / WANG HAO (author) / ZHANG YONG (author) / KANG ZHENHUI (author) / DUAN JUNJIE (author) / LU MIN (author)

    Publication date :

    2023-09-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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