What is the reason for the loud noise of Chery car chargers?

Hello, Chery car charger is loud because of the high speed of the fan, some electric car chargers have a cooling fan in the charger, this fan can suck air inward to speed up the flow of air to dissipate heat to the electronic components in the charger. If the fan is running at a high speed, it will cause the charger to be noisy when working, which is normal.

Electric vehicles are a very common means of transportation in daily life, and they are lightweight and flexible, making them ideal for navigating urban roads with traffic jams. And electric vehicles do not need to consume gasoline, which is good for environmental protection.

Most electric vehicles are using lead-acid batteries and lithium batteries, and electric vehicles that use lithium batteries** are more expensive.

Lithium batteries have a higher energy density and are lighter in weight, and this kind of battery also has a longer lifespan, but the cost of replacing the battery after it is damaged is also high.

The working principle of the battery is very simple, the chemical reaction carried out inside the battery is reversible, and the direction of the chemical reaction is different when discharging and charging. During discharge, ions will go from the negative electrode to the positive electrode, and the electrons will pass through the outer circuit from the negative electrode to the positive electrode, so that the external circuit can generate current. When it comes to charging, it's the opposite, almost all rechargeable batteries work like this.

The positive and negative electrodes of a battery are two metals with different reactive properties. As the number of charge and discharge increases, some ions are lost, and the battery's ability to store electricity also decreases.

Hope it helps!

1. Lack of oil in the cooling fan bearing: If the charger cooling fan bearing is short of oil, then when the charger is working, the fan rotation friction will make noise. You can disassemble the charger, find the cooling fan bearing, and add lubricating oil to solve the problem of high charging noise of the electric vehicle charger.

If the bearing has rusted, remove the rust first.

Second, the surrounding temperature is too high to dissipate heat: when the electric vehicle is charging, it will generate a lot of heat, and at this time the fan will start to run to ensure heat dissipation. If the electric vehicle is charged in a high-temperature environment, it will cause the charger cooling fan to rotate faster and become louder, so park the car in a cool place to charge, and try to control the charging time to prevent overcharging to solve the problem of loud noise.

3. Charger components fall off: Once the charger has components falling off, its charging parameters will change, which will make the charging voltage uneven, make the charger heat up, cause the cooling fan to rotate abnormally, and generate noise. It is generally not recommended to reconnect the components, but rather to replace them with a new charger.

Hope it helps!

1 is the sound of the fan, mainly because the fan bearing lubricating oil is too dry due to the weather, this does not affect the sound, just charge it for a while, 2 is the whistling sound of the electrical components in the charger transformer, which is recommended that you replace.

The Xpeng battery car charger was very loud at the beginning, which should be the problem of its power running at full load, and there is no way to solve it.

1. Lack of oil in the cooling fan bearing.

If the charger cools the fan bearing and lacks oil, then when the charger is working, the fan rotation friction will make noise. For this kind of problem, users only need to disassemble the charger, find the cooling fan bearing, and add lubricating oil to solve the problem of high charging noise of the EV charger. However, it is important to note that if the bearing has rusted, then the rust must be removed first.

Second, the surrounding temperature is too high to dissipate heat.

Secondly, we need to understand that when electric vehicles are charging, they generate a lot of heat, and at this time, the fans will start running to ensure heat dissipation. At this time, if the electric vehicle is charged in a high-temperature environment, it will cause the charger cooling fan to rotate faster, which will not only make the noise louder, but also likely to burn out the charger. For this kind of problem, the user only needs to park the car in a cool place to charge, and try to control the charging time to prevent overcharging to solve the problem of high noise.

3. The charger components fall off.

In addition, it is possible that the charger itself is faulty and the noise becomes louder. Why? Because once the charger has the problem of components falling off, its charging parameters will change, which will make the charging voltage uneven, make the charger heat up, cause the cooling fan to rotate abnormally, and generate noise.

For this kind of problem, it is generally not recommended to reconnect the components, but it is recommended to directly replace the new charger, which is safer and more convenient.

In short, when charging an electric vehicle, if the charger is very noisy, then it is generally caused by the above three reasons. For users, no matter what the reason is, it is necessary to take corresponding measures to solve it in time to prevent the battery from being charged.

The noise is very loud, mainly because the sound insulation effect is not good, you can add a sound insulation effect material to re-insulate.

, battery charger with fan heat dissipation, for a long time, the fan is gray or the fan roller oil is less, there will be a lot of noise, the fan roller can be solved by adding some lubricating oil; 2. The high-frequency core inside the charger is loose.

The noise of the charger is mainly caused by the fan, after the fan is used for a period of time, due to wear and tear, the shaft of the fan will become thinner, the fan blades will flutter up and down and vibrate back and forth in the shaft hole to produce noise, the main way is to change the fan or refuel the fan shaft hole, but the refueling effect is not large, and the time can not be maintained for a long time.

He is very noisy, because he is in the case of three, and then three, there is indeed a little noise, if you want to improve, just adjust this fan!

The reason why the tram charger has sound: the battery charger has a fan for heat dissipation, and after a long time, the fan is gray or the fan roller oil is less, there will be a lot of noise, and the fan roller can be solved by adding some lubricating oil.

The sound of the charger transformer, the general situation is nothing, pay attention to the charging current is not too large, and remember to open the battery cover, by the way to see if there is a lack of electrolyte.

After the charger is used for a period of time, the noise will gradually become louder, and you can go to the 4S store to apply for after-sales maintenance.

Chery battery car charger is very loud at the beginning, and then the sound is small after a while, this situation is the problem of the cooling fan, the cooling fan is not lubricated at the beginning and the sound is loud, but with the operation of the operation, the lubrication is good, and then the sound is small, this situation can be solved by turning on the cooling fan and lubricating it.

When charging an electric vehicle, the charger is loud, which is generally caused by the following two reasons:

1. The sound of the cooling fan.

There is a cooling fan inside the charger, the purpose of which is to shoot out the heat generated by other components of the power pipe machine itself during charging through the heat dissipation holes on the charger shell in time to protect the charger from damage caused by overheating.

During the fast charging process of the charger, the charging current is large, and the fan will run at full speed. When it comes to trickle charging, the fan speed will be greatly reduced and the sound will be much quieter.

2. The cooling fan lacks oil.

As the fan is used for a long time, the lubricating oil near the bearing will dry out, and the noise will increase when the fan is running.

Add lubricating oil and you're good to go.

1. The output line of the charger is short-circuited;

2. Short circuit inside the positive and negative poles of the battery;

3. After the battery voltage is over-discharged, there is almost no starting charging voltage, which makes the charger output high current for a long time and overheats up, resulting in damage to the charger circuit components;

4. The grid voltage is too high, such as the grid voltage input by the charger exceeds 280V, so that the charger can not work normally, and the battery is still charged.

5. The output of the charger is reversed from the positive and negative poles of the connected battery.

Encountering one of the above situations will cause damage to the charger.

1..If it is a charger for a plug-in ferromagnetic transformer, it may be that some of the plugs have gaps, tighten the core position with gaps or drop some paint.

2..The annular iron core is not caused by miscellaneous iron filings near the iron core, and the iron filings are removed.

3..If the inrush current is too large, adjust the charging current to a smaller one before charging and plugging in. Charge it for a while and then adjust it to the appropriate current.

This is a problem with the charger, there is no way to solve it at all, otherwise it is to replace the charger.

It was loud at first, probably a fan sound. Just start charging, the current is large, the heat is large, so the Zhaojing needs to run at high speed, when the charge is filled carefully, the current decreases, the heat is small, and the speed is reduced. The fan needs to be disassembled, oiled, or replaced. Except for wind noise.

After the charger has been used for a long time, the cooling fan bearing inside is short of oil, poor lubrication and rolling causes noise to increase, and adding a drop of oil to the fan bearing (tearing off the self-adhesive on the fan will regret that you can call the front surplus to the fan bearing) can perfectly solve the problem