Simple handling of electric vehicle faults (1)

<1> If the electric vehicle is out of power, how to deal with it (1) Check whether the battery has output and whether the wire ends are open welding

(2) Check whether the fuse and fuse holder are good or bad

(3) Check whether the power lock is good or bad

<2> What to do if the car is powered on and not running (1) Check whether the battery output of the electric car is normal. If the output is too low, the battery is bad. Urgent need to replace the battery

(2) Pull out the brake cable section. If the car turns to prove that the handlebar is broken, the handlebar must be replaced or repaired. It is OK to use the meter 2 and the tube to measure the handlebar (normal long-closed handlebar)

(3) Check the handlebar. Short-circuit the handlebar and the signal line with an iron wire. If the car turns, it proves that the handlebar is broken and needs to be replaced or repaired urgently. Turn on the power and turn the handle. Use a universal meter to measure the positive and signal wires. There is a positive 5V 〈1-4〉 Rotary handle

(4) Whether the controller is good or not, you can short-circuit the positive 5V of the switch cable. If the switch is turned, the controller is okay. The simplest way is to smell the controller for burnt smell. If there is, it proves that the controller is broken.

(5) Check whether the motor is good or bad. If the carbon brush of the motor is not contacted properly, it will cause a little failure

<3> How to repair the electric vehicle motor <Brushed and brushless> (1) If the brushed motor is measured with a universal meter, it proves that the motor is good or bad

(2) The eight lines of the brushless motor are black, red, yellow, green, blue, big yellow, big, green, and big blue. The black line of the motor is used up with the red pen of the energy meter. The three lines are blocked with a black pen. The proof is between 650-750. No problem with the motor

(3) The brush motors of electric vehicles generally replace the carbon brushes. Before opening, pay attention to whether the friction between the changer and the carbon brush is not connected. If so, rub the changer with sandpaper to keep the same distance from the carbon brush.

(3) When opening the motor, pay attention to the motor cable package not to rub the cable package to avoid damage to the cable package

Do not stick the magnet with iron to avoid breaking the magnet

(4) When replacing the Hall of the brushless motor, pay attention to the connection of the Hall wire. If it is the first time, it is best to take the wire down and solder it up to avoid soldering errors. After soldering, use 502 to dip it and dip it with AB glue. Tight so as not to be unstable

(5) Change the magnetic steel and dip the magnetic steel. Be careful to make the glue on the spindle and the magnetic steel clear and clean.

When magnets and magnets are attracted to each other, the glue should be put in the opposite direction and then glued.

<4> Change the controller for electric vehicles. Brushed and non-brushed (1) The brushed controller is easy to change with the ordinary line controller, but the battery display version is 12V to 36V, and 36 direct 12V battery display version is used (but it is not allowed to change the same as if it is not changed)

(2) For brushless controllers, there are two ways to change the phase of the controller with the body, such as over-reversal. 1. Overturn the motor. 2. Use the motor's 8 follow line + positive-negative A yellow B blue C green small line is SA yellow SB, blue, SC, green, positive and negative, the big wire A and B are changed, and the small wire SA and SC can be changed.

<5> Can the electric car body with 250W motor and 150 controller be changed?

(1) It is not possible. For example, the 250W motor can be matched with the 350 controller in 1-4 revolutions, but the 150 controller can be matched with the 250 motor. It is not possible to bring it because the controller outputs to the end, only 150W can not be brought into control. Device

<6>Will the wheel of a brushless electric vehicle rotate when the battery display is broken? (1) Generally speaking, the brushless motor will rotate when the handle is connected to the controller, but if the handle is not connected to the controller, it will be connected to the power If it is displayed, the motor will not rotate.