What are the types of wheel motors?

A hub motor is a motor in which the hub and the drive are directly combined into one. Hub motors are divided into inner rotor type and outer rotor type, and today we will explain the classification of hub motors in detail

1. Inner rotor type: Usually, the inner rotor type is equipped with a fixed-ratio reducer that runs with a high-speed inner rotor motor. The motor speed is usually up to 10,000r/min to achieve a large power density. The reduction structure usually uses a planetary gear reduction system with a wheel speed of about 1,000 r/min and a transmission ratio of about 10:1. The high-speed inner-rotor hub motor has the following advantages: high specific power, light mass, small size, high efficiency, low noise, and low cost; however, the use of a reduction device reduces efficiency, increases unsprung mass, and, due to friction losses, coil losses, and other losses and to the variable speed mechanism The resistance of the motor limits the maximum speed of the motor.

2. Outrunner type: The outrunner type usually uses a low-speed outrunner motor with a maximum speed of about 1000 to 1500 r/min without any reduction device. Since the outer rotor of the motor is fixed to or integrated into the rim of the wheel, the speed of the wheel is equal to the speed of the motor.The advantages of the low-speed outer rotor motor are its simple design, small axial dimensions, high specific power, ability to control torque over a wide speed range, fast response, and direct connection of the outer rotor to the wheel, resulting in high efficiency. The disadvantages are that the size and mass of the motor must be increased in order to generate large torques, which leads to high costs, poor acceleration efficiency and noisy operation.

The above is the classification of wheel motors introduced for you, more related information welcome to consult us at any time