The most important accessory of an electric bicycle is the motor. The motor of an electric bicycle basically determines the performance and grade of the bicycle. Most of the motors used in electric bicycles are high-efficiency rare earth permanent magnet motors. Among them, there are mainly three types of high-speed brushed gear + wheel geared motors, low-speed brushed motors and low-speed brushless motors.

The motor is a component that converts battery electrical energy into mechanical energy and drives the electric wheels to rotate. There are many types of motors used in electric vehicles in terms of their mechanical structure, speed range and electrification form. Common ones are: brushed hub motors with gears, brushless hub motors with gears, brushless hub motors with gears, brushless hub motors with gears, high disk motors, side mounted motors, etc.

The assist sensor is a device that detects the pedal force back to the pedal speed signal when the electric vehicle is in the assist state. According to the electric driving power, the controller can automatically match the manpower and electric power, and jointly drive the electric vehicle to rotate. The most trendy power-assisted sensor is the central axis bilateral torque sensor, which is characterized by the ability to collect the pedal force on the left and right sides. The non-contact electromagnetic signal acquisition method is adopted to improve the accuracy and reliability of the signal acquisition.