Electric vehicle in-wheel motor stator

A hub motor and electric vehicle technology, applied in the field of electric vehicles, can solve the problems of high temperature damage to internal electronic components, hinder the use and popularization of electric vehicles, and the short service life of the motor, so as to reduce the temperature rise of the iron core and improve the quality stability and product performance, the effect of improving slot utilization

Inactive Publication Date: 2016-12-14
TAIZHOU JINYU ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] With the continuous development of electric vehicles, electric vehicles are becoming more and more popular as a green means of transportation. They are gradually promoted from flat road areas such as cities to areas with complex road conditions such as rural areas and mountainous areas, especially in rural areas. In terms of agricultural transportation, some conventional electric vehicles for cities have the following problems: 1. The motor has insufficient power, unable to climb slopes, and cannot car

Method used

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  • Electric vehicle in-wheel motor stator

Examples

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Embodiment 1

[0039] The stator of the electric wheel hub motor is fixed to the frame through the connecting shaft, and the stator forms a rotating connection structure with the rotor through the end covers on both sides of the shaft. The stator is not only affected by the electromagnetic field force, but also bears the impact force from the hub. , supporting the whole structure of the motor. The stator of the electric wheel hub motor includes an iron core 1 and a bracket 2 .

[0040] In this embodiment, the outer diameter of the stator 1 is 206.9 mm. By increasing the outer diameter of the stator, expanding the effective air gap flux, increasing the electromagnetic force and the magnetic force arm, the torque of the motor is increased, and at the same time, a reasonable inner diameter of the stator is designed to reduce The characteristic volume of the iron core improves the power density of the motor. Under the condition that the hub motor is applied to a 10-inch wheel hub, it maximizes t...

Embodiment 2

[0048] The technical solution in this embodiment is basically the same as the technical solution in Embodiment 1, the difference is that in this embodiment, the outer diameter of the stator 1 is 206.8mm, the number of slots in the stator core 1 is 54 slots, and the iron core 1 The tooth width is 5.3mm.

Embodiment 3

[0050] The technical solution in this embodiment is basically the same as the technical solution in embodiment 1, the difference is that in this embodiment, several self-riveting positioning holes 5 distributed in the circumferential direction are used as winding positioning holes 4 after being riveted, As a positioning reference when winding.

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Abstract

The invention provides an electric vehicle in-wheel motor stator, which comprises an iron core and a support, wherein the iron core is fixed on the circumference of the support; the iron core and the support are tightly matched for circumferential positioning; a coil is wound on the iron core; two different disc-shaped supporting plates are positioned, buckled and connected via a self-riveting positioning hole structure to form the support; the supporting plates are connected via a rivet or partial butt riveting fixing is realized; the center of each supporting plate is a round hole with a turned edge; the round holes with turned edges of the two supporting plates are welded to the same sleeve; and welding between the two supporting plates and the sleeve is located at the near end of two ends of the sleeve. The stator support adopts an irregular concave and convex polygon reinforced rib structure, the surface area of the support is increased, the radial or axial irregular complex impact force applied to the support can be effectively shouldered on one hand, output torque variations of the in-wheel motor can be better borne, and on the other hand, the stator support cooling surface area is increased, cooling of the stator is facilitated, temperature rise of the motor is reduced, the bearing ability and the anti-impact ability of the motor are improved, and the electric vehicle in-wheel motor stator can be applied to all kinds of bad environments.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles and relates to a stator of an electric wheel hub motor. Background technique [0002] Electric vehicles are widely used in daily life transportation and travel due to their advantages of environmental protection, energy saving, convenient use, low cost of use, and adaptability to various environments, and are widely favored by consumers. The core component of an electric vehicle is the hub motor. The performance of the hub motor determines the safety, reliability, load capacity, climbing characteristics and cruising range of the electric vehicle during normal riding. In addition, the daily maintenance-free characteristics of the hub motor are also important for consumers to compare. Therefore, while improving the performance of the motor, attention should also be paid to reducing the failure rate of the motor and prolonging its service life. [0003] Existing hub motors include compon...

Claims

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Application Information

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IPC IPC(8): H02K1/16H02K1/18
CPCH02K1/16H02K1/187Y02T10/64
Inventor 王加许王健张忠丁伟
Owner TAIZHOU JINYU ELECTROMECHANICAL
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