1, the first English letter is the manufacturer's number, 48V is the working voltage, the last 6 digits are the production date, and the last 3 digits are the production number;

2, according to the different use environment and frequency, the form is also different. Different types of motors have different characteristics. At present, permanent magnet DC motors are widely used in electric vehicle motors;

3. The motors of electric vehicles can be divided into brush motors and brushless motors. According to the mechanical structure of the motor assembly, it is generally divided into two categories: "toothed" (the motor rotates at high speed and needs gear deceleration) and "toothless" (the torque output of the motor does not undergo any deceleration).