Integrated driving device for new energy vehicle

Abstract

The invention discloses an integrated driving device for a new energy vehicle. Through integrated design, a driving motor, a speed reducer and a differential mechanism are integrated, a shell is shared by the driving motor, the speed reducer and the differential mechanism, a motor shaft serves as not only an output shaft of the driving motor but also an input shaft of the speed reducer, the speed reducer comprises a first-level speed reduction gear set and a second-level speed reduction gear set, a differential mechanism shell is connected with a second-level speed reduction gear, a half axle gear in the differential mechanism is coupled with a vehicle half axle spline, and therefore power generated by the integrated driving device is transmitted to wheel hubs, and the vehicle is driven to run. The integrated driving device for the new energy vehicle is compact in structure and high in integration level, the number of parts is reduced effectively, axial dimensions are shortened, the weight of an assembly is reduced, and the layout flexibility of a power system of the whole vehicle is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of driving devices for new energy vehicles, and in particular relates to an integrated driving device in which a motor and a reducer used on new energy vehicles are integrated. Background technique [0002] At present, global greenhouse gas emissions are intensifying, smog occurs frequently in various places, and environmental problems are becoming increasingly prominent. Vehicle exhaust is considered to be one of the culprits causing the above problems. With the continuous consumption of petroleum energy and the introduction of increasingly stringent emission regulations, new energy As a means of transportation with low emissions and less pollution, automobiles have been widely valued by various OEMs, and the development of new energy vehicles has become an urgent task for the automotive industry. [0003] In addition to the engine, transmission, reducer, differential and other components of traditional veh...

AI Technical Summary

Problems solved by technology

The existing problems are that each independent assembly is large in volume, heavy in weight, complex in structure, and poor in waterproof performance at the joints of each assembly

Patent CN101348075A discloses a drive axle driven by a motor. The power generated by the drive motor passes through the differential speed first, and then through the planetary gear deceleration, realizing an integrated design, but the device is relatively complicated, although the size in the height direction is reduced , but the axial size is large, the motor is slender, and the hollow shaft structure is adopted at the same time, the transmission shaft is a more slender shaft, and the slender shaft has a smaller connection stiffness, which is likely to cause system oscillation

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