Dual-motor driving system

Abstract

The invention discloses a dual-motor driving system. The dual-motor driving system comprises a first motor, a second motor, two sets of gear speed reducing mechanisms, a differential lock and a parking mechanism, wherein the first motor and the second motor are coaxially arranged, primary gears of the two sets of gear speed reducing mechanisms are arranged on an output shaft of the first motor andan output shaft of the second motor respectively, and the differential lock mechanism is arranged at the tail ends of the output shaft of the first motor and the output shaft of the second motor; thedifferential lock mechanism comprises a movable fluted disc assembly, a fixed fluted disc assembly and a fixed armature assembly, and when relative rotation between the two motors needs to be locked,the movable fluted disc assembly and the fixed fluted disc assembly are meshed and locked in the axial direction; and when parking is needed, the differential lock mechanism and the parking mechanismcan be combined to achieve the parking function. According to the structure of the dual-motor driving system, the axial size of a gearbox can be reduced, the coupling of dual-motor output power is achieved through the differential lock mechanism, the maximum output power is improved, and the escape capacity of a vehicle is improved.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicles, and in particular relates to a dual-motor drive system. Background technique [0002] The drive system of pure electric vehicles mainly includes single-motor centralized drive and multi-motor distributed drive. Most of the pure electric vehicles currently on the market adopt a centralized drive scheme. The driving force of the motor is connected to the differential through gears and shafts, and is roughly evenly distributed to the left and right axle shafts. Individual wheels cannot be independently controlled. Compared with electric vehicles driven by single-motor centralized drive, the advantages of using dual-motor distributed independent wheel drive: compact structure, convenient layout, and strong vehicle driving flexibility. [0003] The design of the dual-motor independent drive system needs to consider the space layout, the force of each shaft system of the reducer, etc. As a...

AI Technical Summary

Problems solved by technology

At present, some pure electric vehicles on the market mostly adopt a centralized drive scheme. The driving force of the motor is connected to the differential through gears and shafts, and is roughly evenly distributed to the left and right half shafts. Individual wheels cannot be independently controlled.

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