Unit module combined type stator axial magnetic field toothed hub motor

一种轴向磁场、单元模块的技术，应用在带有静止电枢和旋转磁体的同步电动机、齿轮传动装置、皮带/链条/齿轮等方向，能够解决变速范围大、低转矩、电磁密度高等问题，达到提高续行里程、材料消耗减少、高效率区间的效果

Pending Publication Date: 2020-10-13
眭华兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The drive motor of an electric bicycle requires frequent start / stop, acceleration / deceleration, high torque at low speed or climbing a slope, low torque when driving on normal flat ground, a large speed range, and can maintain speed when driving in various road conditions. Stable performance. Compared with general industrial motors, which can usually optimize the characteristics at the rated operating point, the requirements for electric bicycle drive motors are higher. Ordinary hub motors cannot meet the general requirements of people to improve the mileage of electric bicycles. Field DC motors meet this requirement by themselves
As disclosed in ZL 201620995774.7, "a disc-type ironless DC motor", but the axial magnetic field motor with an ironless structure has a double-rotor structure, which consumes more rare earth permanent magnets, and its economy is obviously insufficient
[0004] Axial magnetic field motors with iron cores, due to their small flux leakage, high electromagnetic density, and wide high-efficiency range, have obvious advantages in the electrical performance of hub motors. Due to the existence of axial magnetic pull, ordinary technicians will avoid simultaneous There is also an axial field motor with a single air gap structure for the overturning moment, so the axial field motors in the prior art are all double air gap structures, and the stator components are connected to the casing, and there is no fixed shaft structure that can be installed The iron-core axial magnetic field motor technology in the hub space that meets the requirements of the through-shaft of the hub motor. The realization of this technology is the best technical path to greatly increase the mileage of electric bicycles and achieve technological leapfrog progress in this field.

Method used

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  • Unit module combined type stator axial magnetic field toothed hub motor
  • Unit module combined type stator axial magnetic field toothed hub motor
  • Unit module combined type stator axial magnetic field toothed hub motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The fixed pin 11 is a dovetail pin integrated with the yoke of the unit stator 7 and unit stator 7, such as Figure 4 As shown, a first dovetail groove 14 is provided on the stator tray 9 in cooperation with the fixing pin 11, and the fixing pin 11 is inserted into the first dovetail groove 14, thereby realizing the fixed connection between the unit stator 7 and the stator tray 9.

Embodiment 2

[0039] The fixed pin 11 is dovetail-shaped on both sides or one side is dovetail-shaped and the other side is "T"-shaped. The yoke of the unit stator 7 is provided with a second dovetail groove 15 that cooperates with the fixed pin 11, corresponding to the second dovetail groove 15 in the stator. The tray 9 is provided with a first dovetail groove 14 or a "T"-shaped groove 16, and a fixing pin 11 is inserted into the second dovetail groove 15 and the first dovetail groove 14 or "T"-shaped groove 16, so that the unit stator 7 and the stator tray 9 fixed connections.

Embodiment 3

[0041] The fixed pin 11 is cylindrical, and the yoke of the unit stator 7 is provided with a first mounting hole 17 cooperating with the fixed pin 11. The stator tray 9 is provided with an outer ring 18 and an axial cylinder 19, and the outer ring 18 and the axial The cylinder 19 is formed with the ring groove 20 of the stator 7 of the set unit on the stator tray 9, and the second installation hole 21 and the third installation hole 22 are provided on the outer ring 18 and the axial cylinder 19 corresponding to the first installation hole 17, as Figure 4 , Figure 5 As shown, the fixing pin 11 is inserted from the second installation hole 21 , the first installation hole 17 and the third installation hole 22 , so as to realize the fixed connection between the unit stator 7 and the stator tray 9 .

[0042] Those skilled in the art can choose the specific form of the bearing unit according to the actual needs, as long as the bearing unit includes an angular contact ball bearing...

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Abstract

The invention discloses a unit module combined type stator axial magnetic field toothed hub motor. The motor comprises a main shaft, a hub, an end cover, a motor and a planetary gear reducing mechanism; the motor is an axial magnetic field motor with a single-air-gap fixed-axis structure; the motor comprises a rotor assembly and a stator assembly; a rotor disc in the rotor assembly is in rolling connection with the main shaft through a bearing unit which comprises an angular contact bearing and is provided with axially parallel rolling bodies; the stator assembly comprises a plurality of unitstators wound with coils and a stator tray; the unit stators are formed by superposing I-shaped silicon steel sheets with different widths in a radial direction and are connected into a whole; the unit stators are connected to the stator tray through fixing pins to form a unit module combined stator structure; and the stator tray is fixedly connected with the main shaft. The motor is low in cost,high in efficiency and wide in high-efficiency interval, and can greatly increase the continuous mileage of an electric bicycle.

Description

technical field [0001] The invention relates to the technical field of hub motors of electric bicycles, in particular to an axial magnetic field geared hub motor. Background technique [0002] There are two main types of existing electric bicycle motors, one is a central motor installed on the central axis of the bicycle, and the other is a hub motor integrated with the hub. The hub motor is divided into a low-speed hub motor and a planetary gear reduction motor. There are two types of geared hub motors for the mechanism. Due to the hysteresis resistance of electric bicycles with low-speed hub motors, the riding function of the bicycle is seriously weakened. The geared hub motor is equipped with a drive motor, a planetary gear reduction mechanism and a one-way clutch in the inner space of the hub and the end cover, which is more suitable Light electric bicycles with good riding function and sliding ability, such as Chinese patents CN03127256.8 and CN201510104597.9 for throu...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H02K21/24H02K7/116H02K9/02H02K1/14H02K11/215H02K1/32H02K1/18H02K1/16F16H1/32
CPCF16H1/32F16H2001/327H02K1/146H02K1/16H02K1/18H02K1/32H02K7/116H02K9/02H02K21/24H02K11/215
Inventor眭华兴
Owner眭华兴