Hub motor for multi-shift automatic shift change electric car

Abstract

The present invention provides a hub motor for a multi-shift automatic shift change electric car, belonging to the technical field of electric cars. The problem is solved that a current hub motor is small in torque and wastes power in operation. A stator comprises an inner stator core arranged on an inner stator support and an outer stator core arranged at an outer stator support; the outer rotorsupport sleeves a fixed shaft through an unidirectional coupler 1, the inner rotor support sleeves on the fixed shaft through an unidirectional coupler 2, the rotor comprises inner magnetic steel arranged on the inner rotor support and outer magnetic steel arranged on the outer rotor support, and the inner stator core, the inner magnetic steel, the outer stator core and the outer magnetic steel are arranged in order from inside to outside along an extension line in a diameter direction of the fixed shaft. Compared to the prior art, the hub motor for a multi-shift automatic shift change electric car increases the sizes of the inner magnetic steel and the outer magnetic steel to allow the torques of the inner motor and the outer motor to be increased save more power in the climbing process of the electric car as easily as walking on firm earth.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, and relates to a hub motor, in particular to a hub motor for multi-gear automatic shifting electric vehicles. Background technique [0002] The in-wheel motor technology is also called the in-wheel motor technology. Its biggest feature is that the power, transmission and braking devices are integrated into the wheel hub, which greatly simplifies the mechanical part of the electric vehicle, and the vehicle driven by the in-wheel motor can obtain better space. Utilization rate, while the transmission efficiency should be much higher. [0003] At present, China Patent Network discloses an electric wheel hub motor and an electric wheel hub motor control method (application publication number: CN107171489A), which includes a wheel hub and a fixed shaft passing through the center of the wheel hub, and the wheel hub is rotationally connected with the fixed shaft. An inner rotor motor, an oute...

AI Technical Summary

Problems solved by technology

[0004] The electric wheel hub motor with the above structure adopts a structure in which the stator is on the outside and the rotor is on the inside. This structure leads to a smaller size of the rotor and a smaller torque of the wheel hub motor, which in turn makes it difficult for the electric vehicle to climb hills, and the electric vehicle is heavy. In addition, there is a motor that is locked in the second and third gears. The locking of the motor is realized by an electronic lock, which consumes a lot of power and consumes electricity.

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