Variable speed wheel-disc integrated mid-motor in electrical bicycle

Abstract

The invention relates to a variable speed wheel-disc integrated mid-motor in an electrical bicycle. The central motor is arranged on a five-way joint on a frame of the electrical bicycle, and can be driven electrically, manually, both electrically and manually or respectively electrically and manually without influence. The motor is low in energy consumption, stable and reliable in force transmission and high in climbing capability in motions. The motor comprises a left screw cap, a first bearing, a motor center shaft, a first screw, an inner motor end cover, stator silicon steel sheets, a second bearing, a stator inner core, a third bearing, a first one-way clutch, an internal gear, a planet carrier, a fourth bearing, a chain wheel, a second one-way clutch, a second screw, a fifth bearing, a right lock nut, an internal gear shaft, planetary gears, an outer motor end cover, magnetic steels and a chain wheel fixing ring.

Description

technical field [0001] The invention relates to an electric bicycle internal variable speed motor wheel disc integrated middle motor, which is installed on the middle bracket of the electric bicycle frame, and can be driven by electricity, human power, human power and electric power together or separately, without mutual influence , low energy consumption during exercise, stable and reliable force transmission, and strong climbing ability. technical background [0002] At present, the hub motor is still a key supporting component of the electric vehicle drive system. Although brushless motors have mostly replaced brushed motors, the overall production technology is backward, and almost all of them are still wound by hand. High-speed geared motors have the advantages of large torque and strong climbing ability, but because the design and manufacturing technology has not yet passed the test, quality problems occur from time to time, and have not yet become mainstream products...

AI Technical Summary

Problems solved by technology

Although brushless motors have mostly replaced brushed motors, the overall production technology is backward, and almost all of them are still hand-wound.

High-speed geared motors have the advantages of large torque and strong climbing ability, but because the design and manufacturing technology has not yet passed the test, quality problems occur from time to time, and have not yet become mainstream products to replace low-speed brushless hub motors

In addition, the reliability (repair rate) of the current better controllers can only be controlled at about 1-3%, and the overall quality of the drive control system is still at a relatively low level

[0003] The disadvantages and deficiencies of the existing small electric hub motor products are: low-speed hub motors have poor climbing ability, and the efficiency decreases under high torque; therefore, the diameter and volume of the motor are getting bigger and bigger, and have gradually reached 222mm from 142mm, 153mm, and 205mm , 266mm, due to the large amount of metal consumables and the heavy motor, the power and energy density are very low, which does not meet the requirements of the era of energy-saving society and light weight

However, due to excessive power consumption, limited battery energy, short mileage on a single charge, and coordinated control of front and rear wheel motors, it is only suitable for special purposes.

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