How to distinguish the electric motor is brushless motor or brush motor?
A) "brushless" brush "basic concepts: widely used electric bicycle is a permanent magnet DC motor, DC permanent magnet motor according to whether use the brush can be divided into brushless motor and brushless motor two, brush motor is the mainstream product of DC motor, the vast majority of electric bicycle motor is a brushless motor. Brushless motor is a DC motor special, it uses a built-in sensor and method of electronic commutator for electronic commutation of brushless motor, the main purpose is to eliminate the brush wear, and the noise generated by the brush contact.Two) brush motor faults did not become restraints it is widely used in the electric bicycle: brush wear and noise of the motor is "brush" and "two major drawbacks of brushless", but in spite of these two disadvantages, why the vast majority of domestic brand manufacturers are still using the brush motor the scheme, are they not aware of this problem? The reason lies in:
From the car appearance, there are 2 ways to determine whether your car is a brush or brushless: first, if it is a brushless motor rotating motor forward is very light, turn back when the heavier can obviously feel resistance. Brushless motor is the same as before and after the light. Two, brush motor only two power lines, brushless motor has 3 thick power cord, there are 5 thin Hall of the ear line, a total of 8 lines. You can try to use your hand motor car (the car just after the wheels), forwardreverse is not as easily without resistance or forward when the light reversal is a little heavy, refer to the first completely know your car is a brush or brushless motor.
