Double-motor multi-mode dynamic coupling driving assembly

Abstract

The invention provides a double-motor multi-mode dynamic coupling driving assembly. A first motor 15 and a second motor 3 are taken as systematic power sources. A rotor of the first motor is integrated with a gear ring to form a gear ring rotor 8, and a complete planetary gear structure is inside the gear rotor. The two motors are coaxially arranged, and a lock 4 is used for locking a sun gear and the second motor 3. The double-motor multi-mode dynamic coupling driving assembly is capable of realizing a single driving mode of the first motor 15, a first motor brake energy recovering mode, a double-motor speed coupling driving mode and a double-motor speed coupling brake energy recovering mode. In addition, the double-motor multi-mode dynamic coupling driving assembly is compact in dynamic coupling structure, small in size and large in power density. Under the condition of not changing the size of a main body of the motor 15, output torque of the motor is improved, demand characteristics on large torque of a driving system of a vehicle can be met, and demands on the driving system, with high power density, of a heavy vehicle under the condition that spatial mass is limited can be met.

Description

technical field [0001] The invention belongs to the technical field of power assembly components, and in particular relates to a dual-motor power coupling drive assembly. Background technique [0002] At present, the driving system of heavy-duty electric vehicles in the field of civil vehicles in my country mainly adopts the form of a large motor plus a transmission. By controlling the speed ratio of the gearbox, the driving torque of the motor is adjusted to meet the requirements of the car's climbing, acceleration and maximum speed. Require. However, this type of drive has stricter requirements on the bearings of large motors. Heavy-duty vehicles such as electric buses mostly work at low speeds, resulting in the motors often working in a low-efficiency working area. Power interruption will occur during the shifting process of the traditional transmission mechanism, which will cause unnecessary impact and affect the riding comfort and other problems. The present invention...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to provide a dual-motor multi-mode coupling drive structure with high power density, simple structure, and easy operation, so that a relatively large motor can work and output large torque when the car is running at low speed; , output high speed; so that the common working conditions of the vehicle work in the high-efficiency working area of ​​the motor; overcome the problems of low power density, complex structure, cumbersome control, and power interruption in shifting of existing transmission devices

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