A stator for an electric wheel hub motor and a motor containing the stator

A technology for in-wheel motors and electric vehicles, applied in the field of electric vehicles, can solve problems such as low conversion efficiency of motors, structural changes of electric vehicles, and sharp increase in motor failure rate, so as to prevent the failure of Hall position sensors, increase the area of ​​stator slots, Improve the effectiveness of the efficiency platform

Active Publication Date: 2018-07-13
WENLING JIUZHOU ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional electric wheel hub motors have the problem of low motor conversion efficiency, and under complex road conditions (such as rural roads), electric vehicles will have problems such as insufficient power, weak climbing, short cruising range, burning coils, and burning Hall devices. Motor failure rate increases sharply
The current practice in the industry is to increase the size of the stator by increasing the size of the hub to improve the anti-overload capability, but increasing the size of the hub will inevitably lead to changes in the structure of the electric vehicle and an increase in manufacturing costs

Method used

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  • A stator for an electric wheel hub motor and a motor containing the stator
  • A stator for an electric wheel hub motor and a motor containing the stator
  • A stator for an electric wheel hub motor and a motor containing the stator

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Effect test

Embodiment 1

[0041] Such as Figure 1 to Figure 5 As shown, the present embodiment provides a 10-inch electric wheel hub motor stator, including a stator core 1 and a bracket 2. The stator core 1 is fixed on the bracket 2, and the stator core 1 is laminated by a plurality of stator sheets. As a result, a copper wire winding 8 is wound on the stator core 1. In this embodiment, two brackets 2 of the same shape are used to fix the stator core 1 between the two brackets 2 through press buckles. The center of the bracket 2 is provided with a mounting hole, and a shaft sleeve 3 is penetrated in the mounting hole. The stator core 1 is provided with an anti-rotation groove 15 and the bracket 2 is provided with an anti-rotation rib 21. The above-mentioned anti-rotation groove 15 corresponds to the anti-rotation rib 21 one by one, which can ensure that the stator is under the action of electromagnetic shear force when the motor rotates. Will not rotate with it. In this embodiment, the structure of ...

Embodiment 2

[0063] The technical solution in this embodiment is mostly the same as the technical solution in Embodiment 1. This embodiment only details the different parts, and the same parts in this embodiment and Embodiment 1 will not be repeated.

[0064] The outer diameter of the stator core 1 is 205.01 ~ 212mm, preferably, the outer diameter of the stator core 1 is 206 ~ 210mm, the slot width A2 of the stator core slot and the outer diameter of the stator core, the inner diameter of the stator core, and the yoke of the stator core The radial width A3 and the number of stator core slots satisfy the following relationship:

[0065] In this embodiment, the structure of the stator is a 48-slot 44 permanent magnet structure. The slot width of the stator core slot A2 = (α + the value of the thickness of the single-layer silicon steel sheet of the stator core) × π × (outer diameter of the stator core-inner diameter of the stator core-radial width of the yoke of the stator core A3 ) / Number of st...

Embodiment 3

[0068] In this embodiment, the structure of the stator is a 48-slot 52-piece permanent magnet structure. The technical solution in this embodiment is mostly the same as the technical solution in Embodiment 1. This embodiment only details the different parts, and the same parts in this embodiment and Embodiment 1 will not be repeated.

[0069] The outer diameter of the stator core 1 is 205.01 ~ 212mm, preferably, the outer diameter of the stator core 1 is 205.5 ~ 211mm, the slot width A2 of the stator core slot and the outer diameter of the stator core, the inner diameter of the stator core, and the yoke of the stator core The radial width A3 and the number of stator core slots satisfy the following relationship:

[0070] The slot width of the stator core slot A2 = (α + the value of the thickness of the single-layer silicon steel sheet of the stator core) × π × (outer diameter of the stator core-inner diameter of the stator core-radial width of the yoke of the stator core A3 ) / Numb...

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Abstract

The invention relates to a stator for an electric car hub motor and a motor containing the same. The stator for the electric car hub motor comprises a stator core and a bracket; the stator core is fixed on the bracket, the outer diameter of the stator core is 205.01-212mm, the notch width of the stator core groove, the stator core outer diameter, the stator core inner diameter, the yoke thickness of the stator core, and the stator core groove number meet the following relations: the notch width of the stator core groove=(alpha+ the value of the single-layer silicon steel sheet thickness of the stator core)*Pai*(stator core outer diameter-stator core inner diameter-yoke thickness of the stator core) / stator core groove number, wherein the value range of alpha is 0.3-0.9. The stator disclosed by the invention has the beneficial effects: the stator structure of the invention reasonably optimizes the electric power and magnetic power in the motor magnetic circuit design, the quick heating condition of the motor caused by short-term overload is avoided, the problems that a winding insulation layer is damaged and the Hall position sensor is invalid are prevented, and the service life of the motor is increased.

Description

Technical field [0001] The present invention relates to the technical field of electric vehicles, in particular to a stator for an electric wheel hub motor and a motor containing the stator. Background technique [0002] Electric vehicles are favored by consumers due to their convenient driving, easy parking, and green environmental protection. As the core component of electric vehicles, the performance, efficiency, and reliability of motors have a great impact on electric vehicles. High-performance drive motors play a decisive role in the realization of the functions of electric vehicles. [0003] At present, most of the motors for electric vehicles are hub motors. The main internal components of the hub motors include a rotor and a stator with a number of permanent magnets installed radially and uniformly on the inner edge. The stator is installed on the rear axle, and the rotor and the rotor are spaced apart. The outer edge of the stator is integrally connected with the hub, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/17H02K1/18H02K1/16H02K1/27H02K1/28
CPCH02K1/165H02K1/17H02K1/18H02K1/2786H02K1/28Y02T10/64
Inventor 钟治平钟玲兵洪国平
Owner WENLING JIUZHOU ELECTROMECHANICAL
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