Drive axle without mechanical difference device driven by permanent magnetic pure square wave motor

Abstract

The invention provides a drive axle without a mechanical difference device driven by a permanent magnetic pure square wave motor, and relates to a mechanical drive axle. A permanent magnetic pure square wave brushless direct current motor and an intelligent controller are connected on a half shaft in different methods through selectable three structures: 1, a drive axle directly driven by the permanent magnetic pure square wave brushless direct current motor; 2, a drive axle in which the permanent magnetic pure square wave brushless direct current motor drives a housing with a bridge; 3, and a drive axle with vertical input shaft and output shaft of a reduction gearbox. The electric vehicle drive axle removes the mechanical difference device and a direct-driven reduction gear. Compared with a conventional electric vehicle drive axle, the drive axle reduces cost, and is stable in control, optimized in structure, reduced in components, reduced in whole vehicle weight, reduced in fault points, reduced in noise, and improves driving mileage of an electric vehicle. The drive axle is characterized in that control is more accurate, the drive axle can realize electronic difference, pulsation is low, and noise is low.

Description

technical field [0001] The invention relates to a mechanical drive bridge, in particular to a drive bridge without a mechanical difference device driven by a permanent magnet pure square wave motor. Background technique [0002] Traditional electric vehicle drive axles (including wheel drive and hub drive) mainly use permanent magnet synchronous motors or variable frequency motors, reducers, mechanical differentials, half shafts and axle housings, etc., with complex structures, large volumes, and high costs. There are many failure points, especially in the narrow space under the vehicle, it is difficult to arrange and arrange so many parts, which will affect the structure and counterweight of the vehicle; [0003] Gearboxes and mechanical differentials produce transmission losses and reduce the cruising range of electric vehicles. If the reducer and mechanical differential can be eliminated, the structure of the drive axle can be simplified, cost can be reduced, failures can...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a permanent magnet pure square wave motor-driven non-mechanical differential drive bridge, the drive bridge is driven by a permanent magnet pure square wave brushless DC motor and an intelligent controller, which is a mechanical differential Even the electric vehicle drive axle with reducer solves the technical problems of complex drive axle structure, high cost, many fault points, and large transmission loss

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