First, the whole electric vehicle has no electricity. Processing method:

1. Check whether the battery has an output wire head or not.

2. Check whether the fuse is complete and whether the seat is burnt out.

3. Check whether the power lock is complete and good or bad.

2. Electric tricycles can't go without electricity. Processing method:

1. Check whether the battery input and output are normal. If the output bottom proves that the battery is broken. We need to replace an electric tricycle here.

Car accessories, that is, batteries.

2. Pull the brake cord off. If the wheels of the car are still turning at this time, it will prove that the car is broken. It needs to be replaced or repaired.

3. Check the handlebar and connect the positive level and signal line with the wire. If the handlebar is broken when the car turns, we need to replace or maintain it.

Repair. Turn on the power supply and twist the turning handle. There are positive 5V (1-4) turning handle with universal meter positive pole line and signal.

4. Whether the controller is good or bad can connect the positive 5V of the turntable as the turntable, then it shows that the controller has no problem, the simplest way is to smell.

Let's see if the controller has a burning odor. If so, it proves that the controller is broken. Let's do some repairs or replace the controller.

5. Check the motor, motor carbon brush contact is still solid, will also cause the car a little incapable of moving. At this time, the syndrome of motor can be prescribed according to syndrome.

Maintenance or replacement commissioning.

3. How to repair the electric motor of electric vehicle (divided into brushless and brushless cases here)

(1) If the brush motor can be measured by a universal meter, it will prove that the motor is good, if it is not connected, it will prove that the motor is broken.

1. Eight wires of brushless motor are black, red, yellow, green, blue, rhubarb, big green, big blue, black wire of red pen quantity motor with universal meter.

The resistance values of three small wires and three black pens are between 650 and 750, which proves that the motor is all right.

(2) Electric vehicles with brush motors generally replace carbon brushes. Before opening, pay attention to whether the friction between the switch and other carbon is not in good contact, if there is a virtual connection?

In this case, the problem can be solved by rubbing the exchanger with sandpaper as well as keeping the carbon brush at a distance.

(3) Turn on the motor and pay attention to the wire wrap of the motor. Do not rub the wire wrap to avoid damage to the wire wrap. Do not touch with ferrous materials to avoid rupture of the magnet.

(4) Brushless motor replacing Hall should pay attention to the connection of Hall wires. If it is the first time, it is best to take off one of the wires and weld another to avoid the occurrence of Hall wires.

Welding error. After welding, glue such as 502 is used first, and then AB glue is used to tighten up, so as to avoid unstable phenomenon.

(5) Change the magnet steel, stain the magnet steel. Here we remind you through practice: Clean the glue on the spindle and magnet steel. Reuse magnetism

Steel and magnets should be glued in the opposite direction and then bonded to each other.

The main fatal weaknesses are: short life, high noise and low efficiency.