Double-motor electric drive axle

Abstract

The invention provides a double-motor electric drive axle. The double-motor electric drive axle comprises two sets of drive motor modules I, a transmission module II and an axle assembly module III, two sets of driving motor systems are matched to share one set of AMT gearbox, different coupling of driving force under different vehicle speeds and different loads is achieved, real-time power distribution is achieved, for example, double motors work at the same time during rapid acceleration, overtaking, high speed and climbing, and the dynamic property of the whole vehicle is improved; single-motor driving is adopted under common working conditions, the motor load rate is increased, the motor working efficient area is optimized, and the whole vehicle economy is improved; when one group of motors fails, the normal driving function of the double-motor mechanism can still be ensured, so that the safety of the whole vehicle is improved; and the two motors share two-gear gear shifting, the output torque of the motors can be further increased and the motors can work in a high-efficiency interval while the gear shifting reliability is guaranteed, and the dynamic property economy is improved. All the gear transmission speed reduction modules and the planet row speed reduction modules are provided with bearings, bearing sealing pieces and lubricating oil which are needed for supporting rotation of the gear transmission speed reduction modules and the planet row speed reduction modules.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a dual-motor electric drive axle. Background technique [0002] From the perspective of the development trend of new energy vehicle electric drive system technology, it is generally developing in the direction of power system integration and integration. Car companies have integrated drive motors, gearboxes, reducers, axles, etc. as electric drive assembly products. Through the integrated design, on the one hand, the volume and weight of the assembly can be further reduced, and the power, volume, and torque density of the system can be improved; It can improve the versatility of products and reduce the cost of development and production. [0003] At present, electric drive axles of new energy commercial vehicles mostly adopt single-motor matching AMT gearboxes, single-motor matching reducers, double-motor matching reducers, and double-motor matching AMT gearbox solu...

AI Technical Summary

Problems solved by technology

[0003] At present, electric drive axles of new energy commercial vehicles mostly adopt single-motor matching AMT gearboxes, single-motor matching reducers, double-motor matching reducers, and double-motor matching AMT gearbox solutions, and most of them are single-motor solutions. low degree

[0004] Moreover, at present, the various components in the electric drive axle of new energy commercial vehicles are loosely installed on the frame, lacking a certain unity and integrity, resulting in inconvenient maintenance, and if the components are not firmly fixed on the vehicle body, it is easy to cause damage. affect vehicle use

Images