The invention discloses an electric drive speed reducer, an electric drive axle power assembly and a vehicle. The electric drive speed reducer comprises a Ravigneaux planetary gear mechanism, and is characterized in that a large sun gear of the Ravigneaux planetary gear mechanism is selectively in power coupling connection with a driving motor, a common planet carrier of the Ravigneaux planet gearmechanism is selectively in power coupling connection with the driving motor, a gear ring of the Ravigneaux planet gear mechanism is selectively in power coupling connection with the driving motor, asmall sun gear of the Ravigneaux planet gear mechanism is locked, and the common planet carrier is used for being connected with the input end of a differential mechanism. According to the electric drive speed reducer, the electric drive speed reducer can output the power of the driving motor through speed reduction or constant speed or speed increase through the arrangement of the Ravigneaux planetary gear mechanism and has three selectable speed ratios for power output, so that the applicability of the electric drive speed reducer is enhanced, the structure is simple, the cost is low, and the dynamic property and the economical efficiency of a vehicle carrying the electric drive speed reducer are improved at the same time.
本发明公开了一种电驱减速器、电驱动桥动力总成、车辆,电驱减速器包括:拉维娜行星齿轮机构,拉维娜行星齿轮机构的大太阳轮可选择性地与驱动电机动力耦合连接,拉维娜行星齿轮机构的公共行星架可选择性地与驱动电机动力耦合连接,拉维娜行星齿轮机构的齿圈可选择性地与驱动电机动力耦合连接,拉维娜行星齿轮机构的小太阳轮锁止,公共行星架用于与差速器的输入端相连。根据本发明的电驱减速器通过拉维娜行星齿轮机构的设置,使电驱减速器可以通过减速或等速或增速输出驱动电机的动力,且具有三种可选择的速比进行动力输出,从而增强电驱减速器的适用性,且结构简单,成本低,同时提高搭载该电驱减速器的车辆的动力性和经济性。
Electric drive speed reducer, electric drive axle power assembly and vehicle
电驱减速器、电驱动桥动力总成、车辆
2020-07-07
Patent
Electronic Resource
Chinese
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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