What s the deal with the electric car twisting the motor and not moving?

1. DC motor.

There is a feature, it can be used as a driving motor, but also as an engine, once the positive and negative poles of the motor are short-circuited, it is equivalent to the motor forming a closed loop, if you push the electric car at this time, the wheel rotation is equivalent to generating electricity, and the positive and negative electrode short circuit just forms a short-circuit current.

So that's when there's a lot of resistance.

2. Due to the large current of the short circuit, it is easy to burn out the internal components of the motor, so this situation should be avoided as soon as possible, and the wires of the positive and negative electrodes should be disconnected and then pushed away. If not other mechanical failures, this is the main reason why electric cars won't push.

3. Using this principle, some electric vehicle manufacturers have designed special circuits to deliberately lock the positive and negative poles so that the car cannot be pushed away for anti-theft. Some manufacturers use the principle that the electric motor can generate electricity, so that the electric vehicle can generate electricity when it is downhill and braking, and recharge it into the battery to increase the cruising range.

Extended Information: Judgment Check for Frequently Asked Questions:

1) Check that the whole vehicle is out of power: first check whether the power supply has power, and if not, check the fuse.

Whether it is good, if the fuse is normal and the power supply is out, then check whether the internal electrode connection of the power supply is loose and whether the battery is disconnected. If the power supply is powered, check whether the power cord and power lock are normal.

2) The whole vehicle is electrified, how to check if the motor does not rotate: turn the controller up to the positive red line and short the yellow line of the rotation speed, if the motor is running normally, the motor and the controller are good, if the motor does not rotate, the motor is bad or the controller is broken. If the motor and controller are normal and the motor does not rotate, it may be a problem with the handlebar and brake handlebar.

3) Detect brushless motors.

a. Unplug all the motor from the wiring harness and use a multimeter.

Diode file, point the red needle of the multimeter on the thin red line of the six-core plug of the motor, and the black needle points on the fine yellow, blue, green and black lines, the value is displayed as more than 900, the red needle is pointed at the black line, and the black needle is pointed at the fine yellow, blue, green and red lines, and the value is displayed as 500-600. Showing zero or infinity is bad.

The possibility is that there is no electricity, charge the electricity for a while and try to see if you can twist it to make money, right? If it's still what you said, twist it and move it, then you can replace it and replace the knob with a new one.

The electric car has electricity, but the twist handle does not go, what is the reason for this, the electric car encounters this kind of problem, there are generally 5 reasons, it may be the speed control handle failure, or the controller connection line is loose or falling off, or the reason for the motor hall failure, let's find out.

The problem that the electric car twist does not respond.

1. The speed control handle is faulty.

If the connecting cable of the speed control handle fails, the electric vehicle shows that there is electricity, but the user twists the handlebar, and the electric car will not go.

Solution: Use a multimeter to measure the voltage of the positive wire and the signal line, if it is only the internal connection line of the rotary handle, then replace the connection wire. If it can't be repaired, then the entire handle needs to be replaced.

2. The controller connection line is loose or falls off.

The red and black wires of the controller are loose or fall off, and the electric vehicle will also have electricity and the twist handle will not go.

Solution: Find these two wires and reconnect them.

3. Motor Hall fault.

The electric car has electricity, and the twist handle does not go away, which may be a motor hall failure. Once the motor has a Hall failure, it will be obviously difficult to operate.

Workaround: Simply replace it with a new Hall.

4. The battery terminal is rusty or corroded.

If the battery terminal is rusted or corroded, the electric vehicle will have insufficient power, that is, it rotates without load and the load does not turn.

Solution: Remove the rust or replace the battery cable directly.

5. The brakes are locked.

If the brakes of the electric car are locked, then the electric car has electricity, and the knob will not go.

Solution: Use a screwdriver to loosen the brake cable.

When the electric car has electricity, but the twist handle does not go, it is generally caused by the above five reasons, you can try to solve it yourself, if you can't solve it, you can go to the repair shop for maintenance, the probability of being repaired will be greater.

In addition, in daily life, strengthen the maintenance of electric vehicles, do not overload driving, overcharge and discharge, etc., will reduce the probability of such problems to a certain extent.

If you buy a new tram, you now need to pinch the handbrake before it can start. If this is not the reason, it is a loose wiring, a wiring problem, or a motor problem.

The handle does not respond, the motor does not rotate, there are many reasons! Such as: the battery is underpowered, the control line is faulty, and the circuit is not working! may cause the motor not to rotate! So your "electric car may all be out of order"! Need to be eliminated step by step!

There is a problem with what you said, if everything is normal, then the knob does not respond, and the motor does not rotate, can it be called all normal? If this problem occurs, you can try it first, is there anything wrong with the motor? If there is no fault with the motor, it is a fault with the line.

Check if the line is open? Replace parts one by one to find the problem.

The electric cars are all normal, and they should be fine. Since the handle does not respond, the motor does not rotate must be a problem, and it is recommended to go directly to repair.

Electric bikes.

Turn the turn of the motor and it won't move because.

1. The poor contact of the line is likely to be caused by the high-voltage series in a certain place of the line.

2. If the negative pole of the handle is broken (the negative pole may be in poor contact), it will fly, turn off the key and reopen the key, the controller will protect, and it will not react, and it is easy to judge that the handle is burning.

3. The controller is broken, and the current and voltage cannot be output normally, so replace the controller.

The handlebar of an electric vehicle has three leads: the power supply (+5V), the ground wire, and the handlebar signal line (continuous change signal of linear shape). There are two kinds of handlebars used in electric vehicles: photoelectric handlebars and Hall handlebars, and the vast majority of electric vehicles currently use Hall handlebars.

The magnitude of the output voltage of the Hall handle depends on the strength of the magnetic field around the Hall element.

Turning the handle changes the strength of the magnetic field around the Hall element, which in turn changes the output voltage of the Hall handle.

Electric bicycle, turn the handlebar for a while, and then it doesn't move, first check whether the handlebar line is loose, or is there any abnormality in the Hall element?

Secondly, it is possible that there is an abnormality in the controller of the electric vehicle.

This is because the wire in front of your handlebar is short-circuited, and before that, you must have had a flying car, that is, you don't use household appliances, you can turn the car directly, and the motor will move. Change the handlebar and basically the problem is solved.

It means that the hall sensor inside the motor is damaged, it is recommended to go to the repair shop and test it, and you can do it.

As follows:

1. The speed control handle is faulty.

Users can use a multimeter to measure the voltage of the positive wire and the signal line, if only the internal connection line of the rotary bar is faulty, then the connection line can be replaced. Of course, if it can't be repaired, the entire turnbar needs to be replaced.

2. The controller connection line is loose or falls off.

If the red and black wires of the controller are loose or fall off, the electric vehicle will also have electricity and the twist handle will not go. For this kind of problem, the user only needs to find these two wires and reconnect them.

Note that for users, regardless of the cause, it can be solved in a corresponding way. And if you can't solve it yourself, you must go to the repair shop as soon as possible to repair it, so that the probability of being repaired will be greater.

Of course, in daily life, users strengthen the maintenance of electric vehicles, so as not to overload, but not overcharged, etc., can also reduce the probability of such problems to a certain extent.

First of all, check whether the source, indicator light, and battery connection cable are broken, and whether they can be charged. Then check the handlebar, control, motor.

Red and black incoming line, yellow and blue outlet, the motor will rotate, the battery is no problem, the red and green short connection of the turn wire will be turned, it is the handle problem, otherwise it is the controller or line problem, check, replace. But if the brake line is too loose, the power-off brake will work and will not go.

The connection between the handlebar and the electric vehicle. 5V between the red and black wires, 0-5V between the blue and black wires of the rotating handlebar

If the handle is broken, it will be replaced, and there is nothing to repair.

Is it enough to see the v of the battery? Not enough to check the battery's wiring, at the interface of the battery. Is it okay to look at the handlebar? If it's not good, change it

The motor locking may be due to the water ingress into the motor, and the water does not dry for a long time, causing the magnet to rust and lock.

Need to open the motor to check if the magnet is really rusty. This phenomenon can be felt in ordinary times, and it is relatively heavy to push the car. In such cases, it is best to deal with it as early as possible, as the consequences may even damage the hall of the controller and motor.

After the motor is turned on, all the rust on the magnet is cleaned up with sandpaper, and whether the hall and the motor line are normal, at this time you can install it to debug whether the motor has been easily rotated, and finally everything is installed and then the motor wire is connected to the debugging is normal, and the problem of the motor will be completely solved.

1. The screws and nuts of each bicycle should be tightened and should not be loosened or fall off.

2. The rotating parts should operate flexibly, and there should be no jamming or stiffness. For example, the front and rear wheels should rotate flexibly, and should not swing left and right and jump up and down, and the wheels should be able to swing briskly back and forth when they are about to stop, and cannot stop rotating suddenly.

The handlebar should rotate flexibly and freely, and the pedal shaft and crank should be tightened, not loose with each other, and rotate flexibly.

3. The gearing of the transmission vehicle should be correct within the transmission range, the transmission position should be clear, and there should be no neutral gear in the middle.

4. The chain should be tightened appropriately and operate flexibly. Repeatedly shake the crank sprocket with the hand in the forward and reverse directions, and the chain will run flexibly, and there shall be no jumping and falling off.

5. Hold the front and rear parts of the saddle with both hands, and press down the front end of the saddle with one hand, and the front end of the saddle shall not collapse. Then use both hands to turn the saddle horizontally, and the saddle should not be rotated.

6. Selection of brake and brake system: hold the handlebar with both hands, brake left and right respectively and push and pull the bicycle back and forth, and the wheels should not rotate at this time; Release the handle and the brake system should be able to reset quickly.

7. The surface of each part should be clean, no stains and rust, the trademark decal should be complete and clear, without sharp edge burrs, etc., such as the edge of the mud board and the chain cover should not have the feeling of pricking the hand, and the end of the steel rope such as brakes should be equipped with a protective sleeve.

The rear brake disc is stuck, or the rear brake is locked, let the master come to the door to see, or let the father take a look, it's just a small problem.

There are many reasons why the wheels of electric vehicles suddenly do not turn, and the specific reasons and corresponding solutions are as follows:

1.Disconnect the brake power supply (brake cable, brake switch not returning to its original position, etc.). In this case, turn on the power and the rear brake light is always lit with a twinkle. ）

2.The speed control handle is malfunctioning. (Check that the speed control handle is reliably connected.) For 3-wire cables, you can directly short the usually red) and signal wires (usually green). After the motor is short-circuited, it should be rotated).

3.Car hall. (When accelerating, the rear wheels make a sound, then stop).