Double-motor gear speed reduction drive axle assembly with wheel edge speed reduction mechanism

Abstract

The invention provides a dual-motor gear reduction drive axle assembly with a hub reduction mechanism. The dual-motor gear reduction drive axle assembly comprises a dual-drive motor, an axle housing assembly, a brake module, a gear reduction module, a differential mechanism module and a motor control unit used for controlling the working state of the dual-drive motor. The dual-drive motor comprises a main drive motor and an auxiliary drive motor, and the main drive motor and the auxiliary drive motor are arranged on the front side and the rear side of the axle housing assembly respectively. Power input by the motor is distributed to the two half shafts through the differential mechanism and finally transmitted to wheels through the hub reduction gear. The double-motor two-gear cylindrical gear speed reducing mechanism comprises a gear shifting mechanism, and two-gear speed reducing and gear shifting operation can be achieved. The differential mechanism module comprises a differential mechanism and a vehicle speed sensor; according to the drive axle assembly, front and rear motors are adopted for distributed driving, power transmission coupling is achieved through gear speed reduction transmission, the structure is compact, the motor operation efficiency is high, the weight of a power assembly is reduced, and the whole vehicle energy consumption level is reduced.

Description

technical field [0001] The present application relates to the technical field of vehicle drive, in particular to a double-motor gear reduction drive axle assembly with a wheel-side reduction mechanism. Background technique [0002] The power system is one of the main structures of the car, and the quality of the power system directly affects the performance of the car. At present, most of the market adopts the direct drive form of the drive motor and the traditional axle to drive the whole vehicle. The axle and the motor adopt a simple integration mode. The traditional axle occupies most of the chassis space, resulting in a short mileage of the vehicle. The overall experience is poor. [0003] The authorized notification number is CN203472532U utility model patent discloses a new energy drive axle assembly, which is a motor parallel type, cylindrical gear deceleration configuration, the motor axis is parallel to the power output axis, and the motor is hooked in front of the...

AI Technical Summary

Problems solved by technology

In this patent, because the motor is arranged on the side of the main reducer, the center of gravity of the axle deviates too much from the axis of the bearing axle housing, and the cantilever at the end of the drive train where the motor is located is too long, resulting in unbalanced axle counterweight and large vibration during operation. The attitude of the axle has a great impact, which reduces the comfort and overall reliability. In addition, when the motor is running on bumpy roads, it is difficult to ensure that the motor is coaxial with the transmission gear and bearing due to its heavy weight, which aggravates internal wear and abnormal noise, and the assembly efficiency is generally not good. High and low space utilization

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