Coaxial asynchronous electric drive system
AssigneeXPT (Nanjing) E-powertrain Technology Co., Ltd.
InventorsChuanwei REN, Lu BI, Huaiyuan LIU
Life of this patent
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Abstract
Disclosed is a coaxial asynchronous motor drive system, comprising a speed reducer, an electric motor and a main housing, and further comprising a motor controller, wherein the electric motor and the speed reducer are connected to form a motor reducer assembly and mounted inside the main housing, and the motor controller is fixed to the main housing and connected to the motor reducer assembly. The system of the disclosure reduces parasitic loss of an auxiliary motor drive system of a battery electric four-wheel-drive vehicle and increases the rang per charge of the vehicle, and the compact and integrated coaxial motor drive system facilitates maximum utilization of available space of the vehicle.
Claims17
A coaxial asynchronous motor drive system, comprising a speed reducer, an electric motor and a main housing, and further comprising a motor controller, wherein the electric motor and the speed reducer are connected to form a motor reducer assembly and mounted inside the main housing, and the motor controller is fixed to the main housing and connected to the motor reducer assembly;
- an input shaft and an output shaft of the speed reducer are in a line, and a speed reducer input gear is provided on a hollow motor shaft of the electric motor;
- and
- the electric motor controller controls to drive the gear on the hollow motor shaft of the electric motor to mesh with an intermediate shaft assembly to transfer a torque to an integral differential, and the torque is output to two sides via the integral differential, with a differential axle shaft gear spline on one side thereof being connected to a vehicle axle shaft, and a differential axle shaft gear spline on the other side thereof being connected to a short axle shaft which passes through a motor rotor and which is provided with a spline and a retaining ring at a motor exposed end for connection to a vehicle axle shaft internal spline.
Dependencies are inferred from the claim text.