Knife electric car, after three months of use, the power is obviously insufficient, where is the pro

Hello, the first thing to determine is whether your car is a first-hand or second-hand car. If it is a second-hand car, such a problem must be in the battery, the battery has been repaired, so it will not take long to run out of power.

If not a used car but a new one. Make sure that each wire is on the battery first, because sometimes a collision on the bike will cause the lower plate to hit the battery and loosen the battery wire. If they are all built, you can take the battery to the battery measuring station Now there are such shops in many cities that buy and sell second-hand batteries, and you can measure it for about 10 yuan.

But also be careful not to be deceived, because many people who sell batteries deliberately say that it is not good for you to change. If there is no problem, that is, it is not good to refuel the handlebar, go outside to change it for about 15-20 yuan, if you go to the accessories store to buy a 5 yuan and install it yourself, it is easy to install.

The description is not very clear, it is not easy to judge, the lack of power can be understood as 2 types: 1, the motor is weak, can not be overloaded, but the mileage is fine. 2. It is simply understood that the mileage suddenly becomes smaller. Which one do you belong to?

There must be a problem with the battery or line, and it is unreasonable to find a dealer to replace or repair it, and it is unreasonable to have such a situation in only three months

There is a problem with the battery. Poor contact or broken battery.

In fact, the under-voltage protection of the electric vehicle controller is set to two gears with lower values, and when the voltage drops, turn on the transfer switch and the tram can continue to run

Fake, it's just a change of technology, the general 48V electric vehicle is about to undervoltage protection and power off, thinking that there is no power, in fact, it is to protect the battery from damage and force protection to power off.

Because the cruising range of low-speed electric tricycle is still relatively limited, can not fully meet the daily travel needs of the public, if you want to increase its cruising range, you can install a range extender, in order to increase its cruising range, increase its range of activities, meet the daily travel needs of the public, realize the freedom of travel, no longer due to the lack of power halfway and difficult.

1. The battery cannot be charged at any time.

1.Lead-acid battery is not a lithium battery, can not be charged at any time, the life of the lead-acid battery is calculated according to the number of times of discharge, the battery is most afraid of power loss, often keep enough power to prolong the life of the battery.

2.When charging, the indicator light of the charger is red first and then green, and the floating charge should be guaranteed for 2 hours after the light turns green, which is good for inhibiting battery vulcanization.

2. Prevent the battery from being overcharged.

1.The overcharging of the battery produces a large amount of gas to wash the plates, which accelerates the shedding of the active substances on the plates and shortens the life of the battery.

2.The overcharging of the battery accelerates water loss, resulting in the drying up of the electrolyte and the increase of the battery temperature, resulting in thermal runaway, plate expansion, and shell deformation.

This is the slogan, correspondingly, it's the kind of electric car with pedals, which is out of battery and can be pedaled.

The voltage limiting protection is taken from the handlebar of the knife on the electric vehicle controller, and the voltage limiting protection is to protect the battery, and it is easy to lose the battery with backup power, and it is not good for the battery anyway.

No, it's fake, it's just a change of technology, the general 48V electric vehicle is about to undervoltage protection and power off, thinking that there is no power, in fact, it is to protect the battery from damage and force protection to power off.

Because the cruising range of low-speed electric tricycle is still relatively limited, can not fully meet the daily travel needs of the public, if you want to increase its cruising range, you can install a range extender, in order to increase its cruising range, increase its range of activities, meet the daily travel needs of the public, realize the freedom of travel, no longer due to the lack of power halfway and difficult.

An electric car will definitely not be able to walk without electricity, and no car can move without a power source. In addition to the hardware, the quality of the electric car depends on how far it can run, whether it can ensure daily travel, and whether the range of activities is far enough.

Summary. Hello <>

We'll be happy to answer for you. <>

Possible reasons why the knife electric car suddenly becomes very slow include: 1The battery is low and needs to be recharged. 2.

The electric vehicle circuit fails, resulting in insufficient motor output power. 3.The transmission of the electric vehicle is damaged, resulting in the inability to increase the speed.

4.The tire pressure of electric vehicles is insufficient, and the drag increases, which affects the speed. 5.

The drive chain of electric vehicles is slack or worn, affecting the transmission efficiency.

The knife electric car suddenly became very slow.

Master, my problem is this, the knife electric car did not stop when I parked, and suddenly it fell, and then I got up and rode his car again, and it slowed down.

Hello <>

Very happy to answer for you. <>

Possible reasons why the knife electric car suddenly becomes very slow include: 1The battery is low and needs to be recharged. 2.

The electric vehicle circuit fails, resulting in insufficient motor output power. 3.The transmission of the electric dumb model search family EMU is damaged, resulting in the inability to increase the speed.

4.The tire pressure of electric vehicles is insufficient, and the drag increases, which affects the speed. 5.

The drive chain of electric vehicles is slack or worn, affecting the transmission efficiency.

I fell a little, right?

There are two reasons:1The EV battery may have been damaged, and the electrolyte inside the battery has changed, resulting in a decrease in the performance of the electric limb cell and affecting the speed of the EV.

2.The motor of the electric vehicle may have been damaged, and the parts inside the motor have become loose or worn, which has affected the speed of the electric vehicle.

The controller is malfunctioning, causing the electric die chain to slow down. Although the controller is not large, it plays a vital role in the operation of electric vehicles, because it is used to supply power to the motor by adjusting the current size. If the controller fails, the motor will not have a normal power supply, and the speed will slow down, or even increase the speed.

In this case, you should choose to replace the controller with a new one to solve the speed problem.

Problem 1: Low battery. We often find that when the battery is about to run out of power, even if the knob is adjusted to the fastest position, the speed cannot come up, and the driving is intermittent.

Because the electric vehicle controller has under-voltage protection, such as the under-voltage point of the 48V battery is 42V, the under-voltage point of the 60V battery is 53V, and so on. When the power is used to the undervoltage point, the speed of the car will slow down, which is a kind of protection for the battery. This problem is not called a problem, as long as it is fully charged, it can be solved.

Problem 2: Speed limiting device. Since the current standard for electric vehicles is the old national standard in 1999, one of the requirements is that the maximum speed is not more than 20 yards, otherwise it is an over-standard car, can not be licensed, once there is a traffic accident manufacturers to be responsible.

Therefore, many manufacturers install a speed limit line when the new car leaves the factory, and as long as the line is cut, the speed can be increased.

Problem 3: Motor demagnetization. Frequent overweight and overload will weaken the magnetism of the motor and demagnetize the magnet; If the electric starter is demagnetized, which can also occur under strong vibration or excessive temperature, all demagnetized motors will have a weakened power and the speed will also be slowed down.

Problem 4: Handle problem. If the contact resistance of the plug is too large, it will also cause the motor to rotate slowly and drive hard.

Detect the voltage of the speed control signal line (green line) of the speed control handlebar, and when the handle is at the maximum angle, the voltage of the speed regulating terminal should be. If it is less than this voltage, it will cause the electrode speed to slow down, and the speed regulating handle should be replaced.

The knife electric car is boring, how to repair it?

Hello dear, the reason why the knife electric car is boring is urgent; 1. The motor is demagnetized, the power is attenuated, the speed is slowed down, and the uphill slope is weak. People usually don't care about it. The overweight drive causes the motor to run forcibly, and when the magnet "escapes" during operation, the magnetic force weakens, the speed slows down, and the power weakens.

Electric vehicles have certain load standards. If they are overloaded, the electric vehicles may be fine at the time, but if Yu Liangguo uses them again, the speed may not go up. Overloading and forcibly bearing weight will make the motor suffer and it will be difficult to recover.

2. The battery of the electric vehicle lacks power and the output current is insufficient, resulting in insufficient power and fatigue of the electric vehicle. The controller has a certain under-voltage protection function. When approaching the undervoltage point, the speed of the vehicle will slow down, 48 volt battery, the undervoltage point is at 42 volts, when the power supply is used to the undervoltage point, that is, when there is no power, if you ride forcibly, it will cause damage to the battery, and the speed will obviously slow down, and it will naturally be boring.

3. When the tire pressure of the electric vehicle tire is insufficient, the contact area between the tire and the ground will increase, which will lead to an increase in the resistance of the electric vehicle moving forward, and the electric vehicle will appear boring. How to solve the problem of electric car boring 1, charge the electric car in time to ensure that the electric car has sufficient power. 2. The daily use of electric vehicles should be carried out in strict accordance with the instructions.

3. Inflate the tires of electric vehicles in time to reduce the contact area between the tires and the ground.

It is impossible to have no battery, but it is just a change of technology The general 48V electric vehicle is about to undervoltage protection and power off, we think that there is no power In fact, it is to protect the battery from damage and force protection to power off.

If there is no power, it can still run, which reduces the protection voltage, for example, to 36V or lower, then the electric car can of course press the switch button to a lower protection voltage when there is no power, and then it can continue to run {but the protection voltage is set too low, which will cause permanent damage to the battery).

It is not advisable to set a low protection point, that is to drink to quench thirst, which manufacturer does this, it specifies that it will end early, I still agree with many friends on the Internet that the so-called raising of the protection point is said, early warning, and finally it is normal to reach the specified standard protection point and stop discharging.

Hello, the situation that you can run without electricity may be reflux electricity, since the electric vehicle is an electric vehicle, it must need a battery as an energy storage element.

If you don't need electricity, why is it called an electric car?

Hee-hee, if there really is, then my electric car looks like it's going to pass.

Hello, ACS is an intelligent charging system for knife electric vehicles. "The knife is good, you can run without electricity" thanks to this intelligent charging system, which can convert the kinetic energy part of the exercise into electrical energy. When the electric vehicle runs out of power, it only needs to enable the ACS intelligent charging system of the knife electric vehicle with one key, and it can continue to drive for five to ten kilometers, and the user can go to home or nearby to charge.

Summary. There is a problem with the battery cable or battery plug. Generally, a certain connecting wire on the battery may be loose, or the terminal of a certain battery may be corroded and loose.

The connecting wire will sometimes be rubbed by other things, etc., resulting in internal injuries to the power cord, which will cause the same consequences as the corrosion and loosening of the wiring head, the current is not forceful, it can turn when there is no load, but it will not work after the load, but the lights, horns, etc. can work normally. If these problems occur, try pulling the wires or plugs by hand and fixing them one by one.

The knife electric bicycle bike started to ride normally, and after a few minutes of riding, it didn't give power, and it still ran, and there was a problem there.

There is a problem with the battery cable or battery plug. Generally, a certain connecting wire on the battery may be loose, or the terminal of a certain battery may be corroded and loose. The connecting wire is sometimes rubbed by other things, etc., resulting in internal injuries to the power cord, which will cause the same consequences as the corrosion and loosening of the receiving number of wires, the current is not forceful, it can turn when there is no load, but it will not be able to do it after the load, but the light socks shed, horns, etc. can work normally.

If these problems occur, try pulling the wires or plugs by hand and fixing them one by one.

I suspect the thread is broken, isn't it?

It could also be that the air is lit up and tripped. Once the electric roller hall includes the car in the middle of the road, the first should check the laughing air switch. The air switch is easy to trip, and if it does, push it up to get the finch down.

There are two reasons for a switch tripping: a trip with a violent vibration, or a trip with an instantaneous current that is too large.

There are four reasons why the Knife electric car started in a month and started less than 45 yards.

The first is our power source battery. We can use a multimeter to test whether its voltage meets the required requirements after it is fully charged. Fight such as.

The second is the sock controller for electric vehicles. Electric car. All functions are completed in the controller to complete the power input and power output functions.

The third is the motor of an electric vehicle. In the first days, electric vehicles also had brushed motors, and now most of them use brushless motors.

The fourth is the peripheral original. to the dashboard. All kinds of lights. There's also the Hall handle controller.