What is the reason why the electric car has changed to a knob and is faster than it started?

It must be that the parameters of this knob have changed somewhat compared to the original knob.

For example, if the resistive handle is resistive, the resistance value may be higher than the original, which will give the controller a higher voltage, causing the controller to control the motor to rotate faster.

Some handlebars have high and low speed functions, so if you change one, then he will run fast, and the handlebar you change may not match, find him to change one, it is best to let him pick it up for you. And did you plug in the speed limit line on the controller?

The main reasons why the battery is not as good as the previous number are as follows; 1. The most important thing is that the current battery manufacturers pursue profit and efficiency in the production of batteries on the one hand, and on the other hand, in order to meet the national environmental restriction standards, the lead content in the battery is less, which is why the previous car battery can be used for three or four years, and now the new battery is the reason for paying attention to one and a half to two years. 2. Look at the battery brand, it is possible that the battery you replaced was a good brand before, and now it is replaced by other second-rate or third-rate brands. 3. The battery capacity is different from the previous one.

This can also be the case.

In this case, the handle is broken, and the handle is an adjustable resistor, which only controls the voltage and then the controller detects the voltage and releases a certain amount of electricity to the motor, just replace it with a new handlebar. Check the motor, use the multimeter resistance file, the black meter pen to connect the black wire of the five-wire socket, and the red meter pen to the yellow, blue, and green Hall wires respectively, and the measured resistance is 3K to ohms; It means that the motor is normal. Otherwise, replace the three halls in the motor.

Pay attention to the direction of the hall when replacing, it is best to replace it as it is. Check whether the connection between the motor and the controller is broken. If everything is normal before, switch to a Hall-free controller.

In this case, it is possible that the new knob adjustable resistor data is not the same.

Here's why: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.

How fast or slow the e-bike travels:

It is determined by the polarity of the magnetic field induced by the Hall element. When the different polarities of the magnet approach or move away from the Hall element, the voltage value of the Hall element output will increase or decrease. Under normal circumstances.

When the handle is rotated inward, the voltage value of the output of the Hall element will be from low to high (the range of voltage values is between), which is called the positive handlebar; When the handle is turned outward, the output voltage of the Hall element will be from high to low (the range of voltage values is between), which is called the reverse handle.

Maybe you've pinched the brakes.

Because it is the controller in it, there is a place for connecting to electricity.

Turn off the power first, and use the big brace to prop up the vehicle so that the rear wheels are suspended off the ground. Turn on the power again, the rear wheel rotates in the air, hold the front wheel brake handle, if you hold the front wheel brake handle, the rear wheel is still rotating, it is the controller that is broken.

If the rear wheel does not rotate when holding the front brake handlebar, it is the part of the negative wire connecting the control of the Hall handlebar that is broken, usually a thin black wire, and this wire is most likely to be damaged. The second is that the Hall element or return spring inside the Hall handle is stuck, and the handle can be directly replaced.

In the actual use process.

How many kilometers can you travel with enough power? This is related to many factors, the factors related to the manufacturer are mainly the efficiency characteristics of the motor, the capacity and life characteristics of the battery, and other objective factors related to the factors are: the weight of the rider, the road conditions of frequent riding, whether the brakes need to be used frequently, how the riding habits of the cyclist and so on.

Another issue that consumers need to pay attention to is that the battery capacity will gradually decrease with the growth of use time, and the distance that can be traveled with sufficient power will also decrease, and when the maximum driving distance of the old battery can not meet the needs of a day's transportation, the battery can be considered for maintenance or replacement with a new battery.

The electric door line is stuck, put some oil, OK

The manual knob must have failed.

Maybe there's something wrong with your car's control circuitry. If your handlebar is not damaged by external force or water ingress, it should be suspected that the faulty handlebar is a problem with the vehicle circuit. You can give it a try like this:

Replace your broken knob with another electric car to try, if it can be used, it is a problem with other circuits in your car, you should find a master with a high level of theory and practice to comprehensively investigate until the problem is fully solved. If it can't be used, it means that the handle is broken. In the case of opening the key, use a universal meter to measure the voltage of the signal line, one of which (generally red) has a voltage of 5V, and the other two are out of power, which means that it is normal, and then connect the red line and the remaining two signal lines in pairs, one of which should rotate at the highest speed after one connection, and the motor should stop rotating when the other signal line is also connected, so it should be judged that there is a problem with the quality of the handlebar, and it will be changed to a *** on the line. 3

In this case, if the handle is always easy to burn, this needs to be checked to see if it is a fault caused by a problem with the controller itself, and sometimes there is a problem with the controller itself, which will also cause the handle to be easy to break.

Question: The controller has changed.

The main reasons why the battery is not as good as the previous number are as follows;

1. The most important thing is that the current battery manufacturers pursue profit and efficiency in the production of batteries on the one hand, and on the other hand, in order to meet the national environmental restriction standards, the lead content in the battery is less, which is why the previous car battery can be used for three or four years, and now the new battery is the reason for paying attention to one and a half to two years.

2. Look at the battery brand, it is possible that the battery you replaced was a good brand before, and now it is replaced by other second-rate or third-rate brands.

3. The battery capacity is different from the previous one. This can also be the case.

It is possible that the speed control has put water inside, and due to the relatively low temperature, there may be a freeze break. It is recommended that you push the cart into a warm interior.

Place, it is best to use something like a hair dryer to heat the speed to make it dry, and the condition can basically be relieved, if it still doesn't work, then only change.

The electric car suddenly stopped leaving, and the power light did not come on. What is the reason?

If the power is off or short-circuited, check the line from the battery, use the bulb to see which line can be lit, if it is not lit from the battery, the battery is burned.

1. Turn the speed regulator when bai

Meal by DU situation - this may be a DAO failure of the controller or motor. Back to the inside of the electric car answered.

There is a line, the professional and technical requirements are relatively high, to confirm whether it is the fault of the motor or the controller, it is recommended to go to the brand after-sales service store to the professional maintenance personnel for testing.

2. Spent 20 yuan to replace one - this can be sure that 20 yuan is impossible to buy a brand new battery in the world, it is not excluded that the maintenance personnel have rehydrated the battery or replaced other old batteries, or your battery is still within their warranty period, and the after-sales service is only charged to you for your service fee, you can ask them directly.

3. As soon as you turn the speed control handle, the power will be reduced to the minimum, and the electric car will be bored at all - this is more like a single battery damage.

The controller is broken. For another one, the expensive one is one hundred and eighty yuan, and the cheap one is twenty or thirty less.

You are replacing the battery with his, he replaced you with a repair battery, and it is estimated that your battery is scrapped

Check whether the battery is deformed first, I estimate that the battery is damaged (it is easiest to charge the battery after sunning); If there has been a situation where the charging light does not turn green before, it is basically a broken battery.

<> may be because of the failure of the brake power-off device, or the problem of the acceleration handlebar line, the third is the motor failure of the electric vehicle, which is also one of the most common faults of the electric vehicle, and the fourth is the internal fault of the wiring harness of the electric vehicle.

Those who know about electric vehicles know that a lot of power-off protection devices are installed at the brakes of electric vehicles, and when the brakes are rusted, the springs are broken, and the brakes are damaged, the brake power-off protection devices will be activated. So the owner can try to replace the brake parts to get the electric car back to normal.

There is a problem with the acceleration handlebar line. The wire is divided into red, black and blue three colors, the owner can test the voltage of the three wires to accelerate the turn, if the voltage is abnormal, either there is a problem with the handle or there is a problem with the wire, the owner can choose to replace the handle or the wire according to the actual situation.

Motor failure is also known as Hall sensing commutator failure, generally speaking, to detect motor failure is to use a multimeter to test the voltage corresponding to the wire, if it can be confirmed that there is a problem with the Hall sensor, then the solution is to replace the broken sensor.

Internal failure of the wiring harness of an electric vehicle. Because some wiring harnesses of electric vehicles are exposed, they will age and be oxidized and corroded over time, which will also lead to the phenomenon that electric vehicles have electricity but cannot move. Generally speaking, the additional test method of the wiring harness is to separate the outer skin of the wiring harness to see whether the inner wire is oxidized and corroded, if the inner wire is gone, then the wiring harness needs to be replaced.

Summary. The speed control knob is not adjusted well, resulting in slow acceleration of the electric vehicle. Readjust it and you're good to go.

This is one of the most overlooked situations, as few people think that it is the speed control handlebar that causes the EV to accelerate slowly.

If the speed control knob fails, and the user screws the knob all the way down, it is only equivalent to screwing half of the original knob. As a result, electric vehicles will accelerate slowly.

The speed decreases after replacing the handlebar of the electric vehicle.

Hello, happy to serve you!

The speed control knob is not adjusted well, resulting in the slow acceleration of the electroslag Jianhong EMU. This is one of the most overlooked situations, because few people think that it is the speed control handlebar that causes the electric car to accelerate slowly. If the speed control grip fails, and the user screws the knob all the way down, it is only equivalent to screwing half of the original knob.

As a result, electric vehicles will accelerate slowly.

Summary. Hello, this question can give you a perfect reply, wait for me to sort out the information, I'm typing, 2-3 minutes, don't finish.

The speed decreases after replacing the handlebar of the electric vehicle.

Hello, this question can give you a perfect reply, wait for me to sort out the information, I'm typing, 2-3 minutes, don't finish.

Hello, I am your exclusive technician, attentive, careful, and attentive to answer your car's questions, and find solutions and solutions for you to solve the corresponding problems! The first replacement of the electric car handlebar and the original car's handlebar model is not right, resulting in a small signal output, the second handlebar line speed plug arrangement order is not the same, will also lead to this situation, I hope my answer to help you.

The previous knob was with high speed and low speed, but now it has been changed to one without high speed and low speed, but I feel that I can't run fast.

He told me that there was no power, and the electric display was full.

Yes, that's what happens when you replace the handlebars don't match.

This has nothing to do with electricity, you ask him to replace it with the same knob for you.

Just bring that high-speed and low-speed kind?

I looked at it and there was still a line that didn't connect when I changed it.

Yes, it is. Okay thank you.

Thank you for using Car Master and have a great day!

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