What s going on when the tram charger rings when it s charging

This is the cause of battery polarization and battery water loss. Timely maintenance can be restored.

The method is: add 15ml of pure water to the battery, charge it with a current of 4 amps, charge it until the current drops to 1 amp, park it for 2 hours, measure the voltage of each battery, and then charge the battery if it can't reach it.

Then string the batteries together and you're good to go.

In the summer, the weather is hot and hot, and people will feel uncomfortable The same goes for the battery. In the summer, the battery will lose water more severely, and it will be thirsty like a human.

Therefore, when charging the battery in summer, we should pay attention to the following points to properly avoid a big belly of the battery.

1. It was found that the battery charging time was significantly longer (the general charging time was 6-8 hours). I didn't turn the light after charging overnight, so I had to take the charger off quickly. Go to a professional place to test the charger. Switching to a better charger is beneficial.

2. If the battery has a long charging time and turns to green light, there is no problem with the charger after testing, that is, there is a problem with the battery. The battery is out of liquid. Appropriate liquid can be added.

Be careful not to add too much liquid. Don't see the watery inside. (It's best to find a professional to add) after adding the liquid to stand for a day before charging.

3. In addition to excessive fluid loss, it is also possible that one of the batteries has a short circuit. You can take a multimeter to measure the voltage of each battery. If you find that there is a very low voltage, it is a short circuit. It's time for a new battery.

However, there were signs of the scrapping of the battery before, such as the original battery did not heat up when charging, and it was found that the battery was heating up when it was used for about a year (some even shorter) when charging, (you can feel it by touching the shell of the battery with your hands) However, most users feel strange but do not care too much, because the feeling does not hinder riding, and most of them suddenly happen one day in summer.

Therefore, for electric vehicle users, the usual maintenance is very important, but most people do not know how to maintain it. In addition, some users are told that the battery is maintenance-free when buying an electric vehicle, but the electrolyte of the battery is made into a gelatinous form or has better sealing performance than the general battery, and the water loss is small. But in any case, when the battery is used for about a year (or longer or shorter), it is inevitable that the battery plates will generate sulfate crystals, and it is inevitable that the resistance will increase the heat of charging, the loss of moisture, and then increase the vulcanization, resulting in a vicious circle.

Electric vehicle batteries need to be maintained.

There is an abnormal sound when the electric car charger is charging, and the master will teach you a trick to solve it easily!

Fan or current! Can't be heard at high currents of 220V! But after becoming 48, the voltage is smaller, and the power remains the same, then the current will increase, and you will hear the sound of current! It's like the sound of a rectifier for a fluorescent lamp!

Normally, it will ring as soon as you connect it, and it won't ring if you don't connect it. I both have a charger.

The charger rings, that's because there is a cooling fan in the charger, and when it is charging, the fan will start, and when it turns, it will make a loud noise.

You can disassemble the charger and add a little lubrication to the fan, so that after the fan starts, the sound will be quieter, especially if the charger has been used for many years.

If the sound is still relatively loud, then you can buy the kind of charger without a cooling fan, that kind of charger has no fan, it is silent, and there is no noise drying. Therefore, when you buy it, you must choose which one you need to buy.

The shell of the silent charger generally has multiple heat dissipation ports, and it is enough to use the heat vents alone, so there is no need to use a fan to dissipate heat.

The charger of the battery car is mainly caused by the unstable operation of the internal fan, usually the shaft loses oil, the easiest way is to buy a fan and replace it directly, if you are interested, you can also remove the fan, uncover the sticker on the fan shaft, apply butter, manually turn a few times and then paint, and then turn, so that the sticker can be put back to the original position.

Hello, there are the following points.

1. Lack of oil in the cooling fan bearingIf the charger is short of oil in the cooling fan bearing, 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, what we need to understand is that 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. 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 offIn 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.

If I'm helpful to you, please give me a thumbs up, thank you

Most of the EV chargers have cooling fans, after long-term use of the charger, when the cooling fan bearing is short of oil, it will make rhythmic noise when charging, you can open the charger to fill a little oil for the fan to eliminate the noise.

There are two kinds of chargers, one is a charger with a fan with forced air cooling, this kind of charger will make a buzzing sound as long as it is plugged in to charge; One is that there is no need for a fanless charger with a fan, and charging is silent when plugged in.

1) Add a forced air-cooled micro-fan to the charger, which can reduce the power configuration of the charging integrated circuit module, and the module can be selected without the power of 1 3 fans (the higher the power of this element, the higher the ** of a micro fan).

Advantages of this charger: Cheaper accordingly.

The disadvantages of this charger are: there is noise, and once the fan stops, the charging module will burn out immediately due to high temperature.

2) According to the requirements of charging, select the corresponding power adaptation of the charging integrated circuit module, no need to increase the micro fan at room temperature and will not produce high temperature, saving the cost of configuring the fan, and has the advantages of long life without noise.

The advantages of this charger: noiseless, stable operation and long life.

Disadvantages of this charger: more expensive than those with fans.

The charger of an electric car buzzes when it is charging", which means that you are looking at a charger with a built-in fan.

The reasons why the battery car charging noise is high are as follows:

1. The noise of the charger of the battery car comes from the cooling fan inside, when the charger is charging, some of the internal components will have a certain temperature rise, in order to prevent its work from being unstable or damaged, the manufacturer will install a cooling fan inside the charger, due to the high-speed operation of the fan and the rapid flow of air, it will produce a lot of noise, and the sound will be obvious at night.

2. After the charger has been used for a long time, the heat dissipation fan bearing inside is short of oil, and the noise is increased due to poor lubrication.

Here's why:

1. 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.

2. The internal high-frequency magnetic core of the charger is loose, which can be fastened with paper and then sealed with paraffin wax and hot melt adhesive.

3. The filter capacitor of the pre-stage fails, which increases the ripple, which is generally accompanied by the decrease of the charging current.

The charger of an electric vehicle will also generate heat, and in order to prevent the heat from burning out the charger, a fan is often set up inside to dissipate heat. Like the computer radiator, at the beginning, due to sufficient lubrication, the sound will be very small, and the feeling will not be obvious, with the growth of time, there will be more and more dust inside, and the lubrication effect of the fan will become smaller and smaller, and the natural sound will become louder and louder.

How to care for the battery.

1. Charge in time, if the battery is often "lost", the battery plate is very easy to be injured, so it is very important to fully charge it in time.

2. Start skills, before starting, you should ride like a bicycle for a period of time before starting the power supply of the electric vehicle. This can reduce the damage of high current to the battery plates.

3. Deep discharge, the battery will sink after a period of use, and if it is not activated in time, it will affect the capacity of the battery.

4. Charger, do not buy a fast charger, otherwise it will cause damage to the battery plate.

5. Use the battery protector, the battery protector will eliminate the vulcanization of the battery, so that the plate is always "clean", so as to prolong the service life of the battery.

1. There are many kinds of electric vehicle chargers, some use fans to dissipate heat, some use heat sinks to dissipate heat, and chargers that use fans to dissipate heat have good heat dissipation performance but high noise. Heatsink, heat dissipation is not as good as a fan, but there is no noise. But they have one thing in common, they are all using a three-stage inverter charging method, which is protective for lead-acid batteries, and the indispensable thing in its circuit is the high-frequency transformer, if the charger is unqualified or has fallen, this thing also has noise, which is generated by high-frequency resonance.

2. Buzzing or sizzling sounds. The solution, five minutes after the power is off, disassemble it, there is a largest black block inside, a bit like a magnet (but there is no permanent magnet), that's it, use universal glue (liquid is the best) or use insulating paint to pour it along the gap, and it's good to dry.