AFT variable-torque hub motor

Abstract

The invention discloses an AFT variable-torque hub motor. The AFT variable-torque hub motor comprises a hub motor shell (1), a motor shaft (9), a motor shell (18), an automatic clutch, rotor magnetic steel (22), a stator coil (19), a stator iron core (23), an isolator base (26), a low-speed isolator (27), a low-speed central gear (32) and a high-speed central gear (6), wherein the high-speed central gear (6), the automatic clutch and the low-speed central gear (32) are rotatably arranged on the motor shaft (9) in sequence; the isolator base (26) is fixed on the automatic clutch and connected with the low-speed central gear (32) through the low-speed isolator (27); an inner sleeve ring (10) is meshed with the high-speed central gear (6); and a low-speed transmission mechanism which is meshed with the low-speed central gear (32) and a high-speed transmission mechanism which is meshed with the high-speed central gear (6) are oppositely arranged on two sides of the motor shell (18). By adoption of the structure, the AFT variable-torque hub motor has the advantages of simple and reasonable structure, large transmission torque, high gradeability, high overload capacity, high operating efficiency and the like, and output torque can be automatically changed.

Description

technical field [0001] The invention relates to a hub motor, in particular to an AFT variable torque hub motor that can automatically change the output torque according to the speed change. Background technique [0002] Electric vehicles are popular among consumers due to their energy saving and environmental protection, simple operation, convenient use, and low operating costs. At the same time, they have also received great attention from governments at all levels. Electric vehicles have entered a rapid development channel, and hub motors are in short supply. [0003] At present, the hub motors used in electric vehicles include DC motors, hubs, left and right hub covers, left and right half shafts, and reduction devices. The device includes a central gear fixed on the rotating shaft of the DC motor, planetary gears distributed in a star shape, and a ring gear arranged on the right hub cover. The planetary gears are rotatably arranged on the fixed shaft, and the fixed shaft...

AI Technical Summary

Problems solved by technology

This mode is simple in structure and easy to control, but in actual use, electric vehicles have different requirements for different road conditions; when driving normally, the hub motor requires fast speed and small output torque; when starting, climbing or large When the load is applied, the wheel hub motor is required to have a slow speed and a large output torque; its disadvantages are: first, because the motor is designed according to normal operating conditions, the output torque cannot be changed under the condition that the motor power remains constant. Slopes and heavy loads often make the motor run in an abnormal state, forcing the motor to work in a low-efficiency area, causing the motor to stall, heat up, or even stop rotating, causing impacts on important components such as the motor, battery, and controller, and shortening the life; Second, the climbing ability and overload ability are poor, the adaptation range is small, the operating efficiency is low, and the mileage is short

For this reason, many manufacturers and people of insight have carried out fruitful development and research, but no reasonable products have come out so far.

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