How to check whether the electric vehicle motor and controller are broken by water 5

Your motor is connected to the controller and there is resistance, if it is, the controller is broken. Open it, and you'll know it at a glance.

Check whether there is any water, clean it, see if the insurance is burned, check it first, after it is confirmed, measure the voltage of the battery, and check the line. Use the switch to give a little speed, listen to the sound, if it is bad, the sound will be wrong. Determine whether it is broken.

Plug in the water to dry with a hair dryer.

What kind of controller are you What kind of motor is it, is it a series excited or a brushless DC motor, you have to explain clearly?

You will know it as soon as you receive the motor.

Evaporation water removal with a heat gun: if the motor wheel is aluminum, the surface of the inner magnet is dried with a heat gun, and the evaporation method is used to remove water, if the magnet is wet, the surface of the magnet is oxidized and corroded, and the "internal force" of the motor is lost, resulting in a large discharge current and the motor heats up, wasting electricity.

After the electric vehicle motor enters the water, it is best to maintain the motor in time for the sake of insurance, including the expansion and cleaning of the inside and outside of the motor, drying, measuring insulation, dipping, measuring insulation, cleaning the mechanical part and replacing the lubricating grease, which must be timely.

Precautions for electric vehicle motors.

When riding a bicycle and wading through the water. Therefore, although the puddle is shallow, try not to ride in if you can ride in. If you encounter rainy weather and puddles on the ground, it is recommended that you air dry the motor after riding, so as to prolong the service life.

The current has a thermal effect, and the internal temperature will inevitably rise when the motor works for a long time. The key parts of the motor, the magnet and the coil, are afraid of high temperature, because high temperature will cause the magnet to demagnetize, and will also reduce the insulation performance of the enameled wire, which is the so-called burned coil.

Never turn on the electricity, then disassemble the motor and dry it for two or three days, then dry it and then assemble it.

1. The controller cannot enter the water, at most, the power cord connected to the controller is short-circuited by the water, and it can be cooled for a few hours. Or take a hair dryer and dry it, the motor is easy to get into the water, the 3 bags of the motor, burned out, the consciousness is how cool it is after the water is not good, that is, the motor is water.

2. The general controller and converter of electric vehicles are easy to enter water, and the motor generally does not enter water, because the section of the motor cover is flat, and the cover is basically sealed, even if there is a few drops of water. The motor is connected to the controller and there is resistance.

The general controller and converter of electric vehicles are easy to enter water, and the motor generally does not enter water, because the section of the motor cover is flat, and the cover is basically sealed, even if the water is inlet is a few drops of water. The tragedy is that my car drove into deep water, the controller and converter burned, crying bitterly...

You first take a megohmmeter to see if the motor is grounded. The controller is easily burned out due to water ingress and a short circuit.

If the electric vehicle is seriously soaked, you can remove the controller to dry the water inside, use a hair dryer to dry it and then install it, you can use plastic to wrap the controller after installation, so as to increase the waterproof ability.

When the electric vehicle is not in use, set the multimeter to the +20 rounds (DC) position. If the potential change of the brake signal exceeds 4V when pinching the brake handle, the brake handle fault can be ruled out. Check for faults in peripheral devices or integrated circuits, and troubleshoot them by replacing them with devices of the same model.

It may not be a good way to cover it with a packaging bag, although it can be waterproof, it will also affect the heat dissipation, and it is not easy to air dry once the water goes in. Don't ride again after getting into the water, just ride again after it dries naturally. Always wait for the controller to dry before riding.

The second problem is relatively simple: cut off the power immediately, unplug the battery, and wait until it dries naturally before use.

The first one is very troublesome, some controllers themselves have waterproof functions, if not, it is more difficult to deal with them by themselves, or find a repair shop, but not every shop has such technology, the main thing is to be waterproof, but also to pay attention to ventilation and heat protection.

Cover it with a bag! Once.

Be sure not to use it after it has been flooded! Wait 12 hours before using it!

What does this mean by your unpowered! Does it mean that after opening the electric door, nothing has any power? If that's the case, it's easier to judge. Finally, the 60° slope is not something that your car can go up for, it should be that you go up against the car.

First, if you have insurance in your car, it should be that your insurance burns. The e-bike checks the battery power socket there, where there will generally be a small finger-sized plastic cover that can be twisted. Unscrew him and you'll see the insurance.

Replace it or remove it. If it is an electric motorcycle, check the battery (some have insurance, most do not) and the electric switch.

Second, check the wiring, if there is a multimeter, it is simple. This can only be seen subjectively, and you may not be able to see it if it is short-circuited. It's up to you!

This line, you turn on the battery, find the main line, and then reconnect a positive wire to the controller, that is, re-make a good line, and then see, if it is good, it is a line problem, if it is not good, it may be burned control, but most of the burning control, the instrument will show that the motor does not go, and your situation has nothing to do with the motor! If you burn the motor, the instrument is good.

The main thing is to check the line between the battery and the controller, and the safety switch and electric door. If you give it to me, it can be done in 1 minute, but if you judge it, it's hard to say.

If you have a multimeter, measure the voltage of the controller and determine the line.

The cause of the failure is that the car cannot move. I don't know how you can tell if there is a problem with the motor or controller. Let's start simple.

What I've come across is. The power indicator is not normal. You can't move.

The car came and asked to move, and it was normal again. If that's the case too. That's not the reason you said.

If it is completely immobile, check the insurance, and then it may be the reason you said.