2013年12月20日星期五

The composition of electric scooters

Electric motorcycle components include: motor, battery, charger, turn to, brake handle, power sensors, lamps and lanterns, display instrument, various work unit to complete the task. Motor used in electric vehicle, the mechanical structure, speed range, and there are many kinds of form of electricity. Common are: brush brush gear hub motor, no gear hub motor, brushless Three wheel bikes hub motor, brushless gear hub motor, side to hang and so on. Now in general use machine has two kinds, one is the rare earth permanent magnet motor, the other is a rare earth permanent magnet Folding electric bikesmotor, these two motor which a better quality, which mainly involves using performance, service life and maintenance cost. The internal structure of the permanent magnet motor it for disc rotor, containing carbon brush, the motor speed is 3000 RPM, must through the matching speed reducer, such as clutch reduced the speed to 180 r/min, to drive vehicles moving. So there are the biggest drawback is carbon brush motor brush wear easily, often need to change, and carbon brush poor contact, not only in the process of driving power consumption is big, but also produces the electric spark and accelerate the commutator oxidation, but have a motor for the control system of the technical requirements is low, simple and convenient maintenance, its production cost is far lower than the brushless motor, vehicle cheaper. Consists of two parts, electric wheel hub and control system, it is the use of electronic commutation, automatic switch drive the polarity of the magnetic field, the direct drive motor wheel rotation at low speed, brushless motor due to the low speed without the need for gear, smooth operation, no mechanical wear and tear, can be directly driven wheels, so there is no brush wear, no commutation spark electronic jamming, its service life can reach more than 10 years. Such motor production technology is complex, and cost is high, slightly lower than brush start torque motor.

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