High Quality Electric Bike DC Motor with Cassette for Electric Bicycle

The drive motor of electric vehicle usually requires frequent start/stop, acceleration/deceleration, high torque at low speed or climbing, low torque at high speed, and wide speed range. Electric vehicle motors can be divided into two categories: brushless motor and brushless motor according to the power on form of motor; According to the mechanical structure of the motor assembly, it is generally divided into two categories: "toothed" (the motor has high speed and needs to be decelerated through gears) and "toothless" (the motor torque output does not undergo any deceleration).

Generally speaking, because brushless DC motor has no friction loss of mechanical commutation, gearbox consumption and speed regulating circuit loss, the efficiency can generally be higher than 85%. However, considering the highest cost performance in actual design, in order to reduce material consumption, it is generally designed to be 76%. The efficiency of the brush DC motor is usually about 70% due to the consumption of the gearbox and overrunning clutch.