The invention belongs to the technical field of electric vehicles, and particularly relates to a dual-motor power system and an electric vehicle. The dual-motor power system comprises a first motor, a second motor, a differential mechanism and a transmission, wherein the transmission comprises a first input shaft, a second input shaft and a controllable torque transmission device; the transmission is connected with vehicle wheels through the differential mechanism; a driving shaft of the first motor is connected with the first input shaft, and the first motor outputs a first torque through the controllable torque transmission device in a neutral gear, a first gear transmission ratio or a second gear transmission ratio; a driving shaft of the second motor is connected with the second input shaft, and the second motor outputs a second torque in a three-gear transmission ratio; and the first-gear transmission ratio is greater than the second-gear transmission ratio. According to the invention, the dynamic property of the dual-motor power system is improved, meanwhile, the gear shifting time is shortened, impact in the gear shifting process is reduced, the integration degree of the dual-motor power system is high, and the installation space is saved.
本发明属于电动汽车技术领域,特别是涉及一种双电机动力系统及电动汽车。该双电机动力系统包括第一电机、第二电机、差速器以及变速器;变速器包括第一输入轴、第二输入轴以及可控扭矩传递装置;变速器通过差速器连接汽车车轮;第一电机的驱动轴连接第一输入轴,且第一电机通过可控扭矩传递装置以空档、一档传动比或以二档传动比输出第一扭矩;第二电机的驱动轴连接第二输入轴,且第二电机以三档传动比输出第二扭矩;其中,一档传动大于二档传动比。本发明中,提升了该双电机动力系统的动力性的同时,还加快了换档时间以及减小了换档过程中的冲击,且该双电机动力系统集成度高,节约了安装空间。
Dual-motor power system and electric vehicle
双电机动力系统及电动汽车
18.02.2022
Patent
Elektronische Ressource
Chinesisch
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 |