How to choose the motor of electric vehicle?
There are two kinds of electric bicycles: brushless and brush motors. At present, brushless permanent magnet motors have the tendency to replace brush motors. The controller must have the functions of stepless speed regulation, undervoltage, overload and power-off protection, and also has an electric quantity display device. Charger should have automatic equalization charging function, generally observed from the plug for the four core, can be achieved after charging three sets of battery voltage consistent, so as to improve the capacity of the battery.Battery (storage battery) is the key part of electric vehicle. At present, all manufacturers are using lead-acid battery maintenance free, but because of the different formula, the service life is not the same, some seven or eight months, some year or even longer. A car battery market price of 300 to 450 yuan. The longer the service life, the better for the user. It is reported that there are new nickel hydrogen hydride, nickel cadmium battery came out, but the price is more than 3 times the lead-acid battery, but because of its light weight, long service life.
How to choose an electric car?To choose a satisfactory electric bicycle, first of all, to observe the accuracy of the frame. Such as front and rear wheels should be in the central plane of the frame, and the center of the axle should be perpendicular to the center plane of the frame. Handlebar in the left and right sides of not less than 60 degrees within the scope of the steering should be flexible, front and rear wheel radial and end runout of less than 2 mm. The tightness of the chain is suitable, and the fasteners are free from looseness. According to the color of personal preference, the popular silver gray, green, light yellow penang. For the style, to the battery box is arranged on the oblique beam, and no influence on and off for good.
