Electric car wheel hub motor

Abstract

The invention discloses an electric car wheel hub motor including a stator, a rotor and a connecting shaft. The stator and the connecting shaft are circumferentially positioned. The rotor sleeves the stator. The wheel hub motor is a 10-inch motor. The inner diameter of a magnetic conductive ring of the rotor is between 212.1 mm and 212.9 mm. The outer diameter of the stator is between 205.1 mm and 208 mm. While rim valve hole perforation operability is ensure and the functions of a rim are not affected, through increasing the size of a rim welding inner ring, the inner diameter of the magnetic conductive ring and the outer diameter of the stator, and optimizing the inner support structure of the stator, the moment arm and effective air gap magnetic flux of the motor are increased, and larger electromagnetic force is obtained. The output torque performance and the work efficiency of the motor are improved, and the power density and material utilization rate of the motor are increased as well. More inner space of the motor is obtained, which facilitates motor cooling, reduces motor temperature rise, and reduces the high-temperature aging speed of the motor. The motor load capacity is high, safety and reliability is high, and the motor is more environment-friendly and energy-saving.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles and relates to 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 components such as...

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.

To solve the problem of insufficient power for electric vehicles, you can choose a larger size hub, such as the original 10-inch hub motor, and adjust it to a 12-inch or 16-inch hub motor, but this will increase the cost of the motor, and the large size motor is suitable The model of the model will also change accordingly, and cannot be used in small models

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