Electric vehicle in-wheel motor stator

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...

AI Technical Summary

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 carry heavy loads; 2. The temperature of the motor rises, and it is easy to heat up and burn out the wire package, and the internal electronic components are overheated. Damage, high temperature demagnetization of permanent magnets; 3. Insufficient structural strength under heavy load; 4. High failure rate and short service life of the motor, etc.

The high failure rate and low load capacity of electric vehicles have seriously hindered the use and popularization of electric vehicles in rural and mountainous areas

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