How to judge the quality of motor vehicles?
(2) brushless low speed motor. The non reduction gear device has the advantages of no maintenance and no noise. But the controller is complex, the starting current is large, and the overload climbing ability is poor.(3) the low speed motor with brush and no gear reducer has the advantages of simple structure, low cost, poor ability of starting uphill and overload, and large power consumption.
At present, there are three kinds of motors used in electric vehicles:(1) high speed motor with brush. The utility model has the advantages of high motor efficiency, high capacity for overload climbing, large starting torque, and power output after a slow speed reduction by a gear transmission device.
Because of high speed brushless high speed motor (high speed motor, low speed motor 3000 rpm 500 rpm), the need for speed through a reduction gear device torque output power, so the noise than low speed motor noise is relatively large. High speed low speed motor production process complex, high cost, like some brand-name electric cars, high-speed motor selection. A car, cheap car, assembled cars, in order to reduce the cost of the low-speed motor, you in the purchase of electric cars, not because the motor sounds slightly larger and wrong. Car Buying users should pay more attention to, not because the motor no noise, no wear is good, the main indicators of motor efficiency and motor power, the maximum the weakness of low speed motor is the motor efficiency is low, easy to fade magnet magnetic, heavy weight, poor motivation, riding weakness, large power consumption etc.. At present, the electric car brand is particularly miscellaneous, most brands from medium and small enterprises.
