Dual-power brushless DC motor

Abstract

The invention discloses a dual-power brushless DC motor comprising at least two motor drive units. Each motor drive unit comprises a stator core, a permanent-magnet rotor, a Hall sensor, a relay, a controller and a battery. Multiple teeth which are of the same structure and used for winding are arranged on the stator cores along the circumference. Windings of which the at least three phases are in same phase angle distribution relative to each other are wound on the teeth. The windings of each phase are wound in turn on the multiple stator cores to form multiple layer structures. The in-phase windings in the same layer are connected in series. The in-phase windings in two adjacent layers are connected end to end. Connectors lead out by the multi-phase windings in the last layer are connected to form a tail end. Connectors lead out by the multi-phase windings in the first layer are connected with alternating current to form an input end for driving the multi-phase windings in at least one layer to work. The torque and mileage of the dual-power brushless DC motor of the invention are 40-50% higher than those of a single-power motor. The dual-power brushless DC motor has the advantages of high torque, low temperature rise, low noise and long mileage, and is in line with the industry technical standard.

Description

technical field [0001] The invention relates to the technical field of electric vehicles. More specifically, the present invention relates to a dual-power brushless DC motor for electric vehicles. Background technique [0002] An electric vehicle is a fast-riding, heavy-duty vehicle, which is powered by a battery mounted on the frame and driven by a hub motor coaxially mounted on the rear wheel. The performance of the motor plays a vital role in the performance of the electric vehicle. The current single-power motors on the market have disadvantages such as high motor noise, high temperature rise, and short battery life. The iron core structure has not changed, but the winding wire is simply divided into two parts, which is equivalent to dividing the single-speed winding enameled wire into two-speed winding enameled wire. no substantive solution. Therefore, there is an urgent need for a dual-power motor with high torque, low temperature rise, low noise and long mileage. ...

AI Technical Summary

Problems solved by technology

The performance of the motor plays a vital role in the performance of the electric vehicle. The current single-power motors on the market have disadvantages such as high motor noise, high temperature rise, and short battery life. The structure of the iron core has not changed, but the winding wire is simply divided into two parts, which is equivalent to dividing the single-speed winding enameled wire into two-speed winding enameled wire. no substantive solution

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