Integrated hub motor driving unit

Abstract

The invention discloses an integrated hub motor driving unit which comprises a driving motor arranged inside a rim. A motor shaft of the driving motor is supported on a motor shell through a motor bearing; one side of the motor shaft is connected with a parking brake, and the other side of the motor shaft is connected with a driving brake through a planetary deceleration mechanism; the planetary deceleration mechanism is a first-stage planetary wheel mechanism; and the input end of the planetary deceleration mechanism is connected with the motor shaft, and the output end of the planetary deceleration mechanism is connected with the rim and a brake disc of the driving brake. The integrated hub motor driving unit is simple in structure and convenient to use and replace, the functions of driving, braking and supporting are achieved at the same time, all the components are integrated in a wheel and compact in structure, the parking brake with the smaller capacity is used, and thus the excellent performance of the short braking distance and the high parking slope is achieved.

Description

technical field [0001] The invention relates to an in-wheel motor drive unit, which belongs to the technical field of drive unit components of a hybrid electric vehicle, in particular to an in-wheel motor drive unit integrating the functions of driving, deceleration, braking and support. Background technique [0002] With the development of new energy vehicle technology, there are more and more drive schemes for hybrid and electric vehicles. Hybrid and pure electric vehicles that are common in the market mainly replace the engine with a motor or add a motor and battery, while the form of power transmission devices such as gearboxes and drive shafts are still retained. Compared with traditional models, the weight of the vehicle has not been reduced, and the technical complexity has increased . Improving the mileage of electric vehicles is the goal that electric vehicles have been pursuing. Reducing vehicle curb weight and simplifying the transmission structure are important ...

AI Technical Summary

Problems solved by technology

[0003] In the Chinese invention patent CN104590001A, an integrated in-wheel motor drive unit is disclosed, which applies the drive motor, two-stage planetary gear reduction mechanism, brake disc, brake, etc. Traditional automotive components such as transmissions and drive shafts have greatly reduced the weight of the vehicle and improved transmission efficiency; and achieved high torque output through the two-stage planetary gear reduction mechanism; however, this technical solution uses two-stage planetary gears The deceleration mechanism requires a long drive motor with large width and small diameter to facilitate the installation of the two-stage planetary gear reducer and achieve stable power output. Due to the large width and small diameter of the drive motor, the rim of the corresponding automobile wheel It will also become larger, which will cause the mass of the electric wheel assembly to increase and increase the energy consumption of the wheel. At the same time, due to the small diameter of the two-stage planetary gear reduction mechanism, the corresponding torque will decrease. Insufficient situation; at the same time, due to the transmission pair structure of the two-stage planetary gear reduction mechanism, the electric wheel assembly has the disadvantages of high noise, poor sealing scheme, and difficult disassembly and assembly.

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