Does fast charging of new energy electric vehicles damage the battery all the time?

New Energy Vehicles:

Although there are many disadvantages of new energy vehicles, there are still many consumers who choose to buy new energy vehicles under the strong subsidies and preferential treatment of the state. There is still a big difference between new energy vehicles and traditional fuel vehicles, for example, new energy vehicles use kinetic energy as energy supply, while fuel vehicles need to refuel to supply energy. However, there are two ways to charge new energy vehicles:

Fast charging and slow charging.

Fast and slow charging of new energy vehicles:

Fast charging is what we call DC charging, generally speaking, the DC voltage of fast charging will be greater than the battery voltage. Generally, it can reach 80% capacity in half an hour, while slow charging takes a long time, and it can take more than six hours to fully charge the battery. Slow charging is the use of alternating current, the current and power are relatively small, although the charging time will be relatively long, but the life of the battery has a good guarantee, and the cost of electricity will be relatively low.

What is the impact of long-term fast charging of new energy vehicles on the car:

When we use fast charging for a long time, the semi-permeable membrane on the surface of the battery anode will be broken to a certain extent, which will cause the electrode material and the electrolyte to react with each other, and when charging, the temperature will be much higher than usual, which will decompose the electrolyte, resulting in a reduction in battery capacity, which greatly shortens the life of the battery.

If the new energy vehicle is used for long-term fast charging, then the damage to the battery is also irreversible, which will greatly reduce the life of the battery. Because the characteristic of lithium batteries is to generate electrical energy through electrochemical reactions, if new energy vehicles are used for long-term fast charging, the reducing ability of the battery will be reduced. Due to the frequent use of fast charging, the number of charges increases, resulting in fewer battery cycles.

How do I protect my battery?

Try to use slow charging, although it takes a long time, it will protect the battery. Avoid over-discharging or overcharging, which means minimizing the use of fast charging. Develop good habits to play a role in battery protection.

Advantages and disadvantages of slow charging: small current, long charging time, lower charger and installation costs; It can make full use of the power off-peak period for charging and reduce charging costs; It can charge the battery deeply, improve the charging and discharging efficiency of the battery, and prolong the battery life.

Advantages and disadvantages of fast charging: the battery pack can be quickly replenished in a short period of time, and the charging speed is fast; The installation requirements and cost of charging equipment are high, the current and voltage are high, the impact on the battery is large in a short time, and the long-term fast charging affects the battery life (reducing the reducing ability of the battery).

To put it simply, fast charging has high requirements for the quality of the battery, and the reaction conditions of the battery under high current are too harsh and violent, and the deviation from the equilibrium state is farther, which has a large loss of battery life, and the safety factor will be significantly reduced, so try to do as little as possible when it is not necessary.

Fast charging alleviates the hassle of charging to a certain extent, but don't rely too much on fast charging. Slow charging is the main thing, supplemented by fast charging, which is a healthier choice.

Finally, to take a metaphor that may not be appropriate: a low-power battery is like a weak patient, and slow charging is like giving the patient lean broth, so that he can slowly digest and absorb nutrients by himself; Fast charging is to inject glucose directly into the patient's vein, so that he can quickly recover his vitality. But we all know that when we are not sick, we eat and drink soup normally, instead of hanging glucose every day.

If you use a fast charger to charge an electric vehicle for a long time, the battery life will be reduced to a certain extent. The working principle of the electric vehicle fast charging station is to increase the current, so as to achieve the purpose of "fast charging". The current of the fast charging station is generally about 9A, while the ordinary charging current at home is about 2A, which means that the current of the fast charging station is 5 times that of the home!

In the absence of pulse protection, the fast charging station can be fully charged in a short time, but this will cause great damage to the battery plates, accelerate the vulcanization and aging of the plates, and even cause the plates to fall off and break down.

Fast charging of battery cars will hurt the battery. To charge the battery, the charging current is generally selected from one-tenth of the battery capacity (called battery fast charging) to one-twentieth of the battery capacity (called battery slow charging). It is best to charge the battery for a long time (i.e. slowly) with a small current.

Under normal circumstances, it is charged with one-twentieth of the battery capacity, and the charging time is about 24 hours. Choose fast charging, the output voltage of the charger is relatively high, because the high charging voltage will lead to a high charging current to the battery, which is easy to cause the battery liquid to boil, the water to be vaporized and discharged, and the concentration of sulfuric acid in the electrolyte to increase, accelerate the corrosion of the battery electrode plate, and affect the battery life. Therefore, fast charging cannot be used under normal circumstances, and fast charging is only occasionally used in emergency situations.

Well, if you use it for the first three times, don't use a fast charge. After that there is no problem. When charging, always check for electrolyte and open the lid completely.

I also think that since you want to fully charge it quickly, you need to charge the battery with a high current. We know that high-current charging and discharging is not good for batteries. I think that in the future, technological progress will reduce its impact.

It doesn't have much effect on the battery, but try to rush as little as possible! The movie is loud! The coin-operated fast charging stations are all intelligent, and the charging current can be adjusted at any time according to the voltage, so it has little impact on the battery!

1. Although major OEMs have battery management systems to control the damage to batteries caused by fast charging, this is only a means and cannot be fundamentally solved. 2. In addition, the current charging pile is not unified, and it is unknown whether there is a special program for matching battery materials and temperature. 3. Combining the above factors, although fast charging does save the charging time of the car.

No, since there is no problem with supporting.

The fast charging of new energy vehicles has certain damage to the battery.

Theoretically, fast charging of new energy vehicles has certain damage to the life of the battery, but this damage is relative to slow charging. If there are more fast charging times, the user can clearly feel that the battery is not working, which means that the fast charging settings of this car are problematic. In order to achieve fast charging capabilities, car companies carry out fast charging in a state that the battery cells cannot bear, which will also affect the battery life.

When to charge

In the case of daily driving, if the current remaining power cannot meet the mileage of the subsequent destination, you should find the nearest charging pile for charging. If you have enough time, you should try to choose the slow charging mode, and if the time is urgent, you can also choose the fast charging mode.

Advantages of new energy vehicles

1. Reduce air pollution

As we all know, general fuel vehicles will emit a large amount of exhaust gas when they are running, and the exhaust gas emitted into the air will produce material changes and cause pollution to the air. The smog problem in recent years is also caused by excessive vehicle emissions. Because new energy vehicles generally use charging, fuel hybrids, or direct pure electric energy, the use of new energy vehicles can reduce air pollution, which is also one of the reasons why the state has been vigorously supporting the new energy industry.

2. There is no tail number restriction and national policy support

Now more and more big cities travel to limit the number of lines, in addition to the cost of buying a license plate, many families to buy two cars may not be enough, but under this premise, the state has introduced policies to vigorously support new energy vehicles, many cities no longer limit the tail number of new energy vehicles, to solve the problem of many people driving troubles.

The fast charging of new energy vehicles has some damage to the battery, and the key is whether the damage is too large and whether it will affect the service life of the battery. First of all, fast charging is more likely to cause uneven battery heating, and once thermal runaway occurs, there is a danger of ***. Secondly, fast charging is the rapid insertion of ions from the positive electrode into the negative electrode to increase the flow and speed of the ions.

This causes electrode concentration polarization, which ultimately leads to the destruction of the electrode material. The longer the fast charge is used, the more serious the damage to the electrode material. But that being said, batteries aren't that squeamish either, and most of them are protected nowadays.

For example, the BMS system has the monitoring, deployment, maintenance and protection of the individual modules of the battery center. The purpose is to prevent overcharging and overdischarging, prolong the battery life, and help the battery work properly. Long-term fast charging will definitely damage the power battery.

After all, fast charging itself uses high-current charging, which can easily lead to overheating and overcharging. Many power batteries will spontaneously combust because of the fast charging mode. From this point of view, it should be possible to intuitively understand fast charging, especially the damage caused by long-term fast charging to the power battery.

However, whether new energy vehicles are fast charging or slow charging must be discussed according to certain usage scenarios. The charging method that meets the charging needs of current users is a good charging method.

Fast charging does no harm to the battery and does not affect the service life of the battery. It can be used with confidence, and the technologies promoted are all tested.

<> "Many new energy vehicles are now listed in the automobile market, covering two charging modes: fast charging and slow charging. In fast charging mode, many electric vehicles can replenish most of the battery in a short period of time. For car users, fast charging can save a lot of charging time, but some people say that fast charging is harmful to new energy vehicle batteries.

The following is a brief analysis for you.

First of all, frequent fast charging is more damaging to the car battery than slow charging.

There are two main charging methods for new energy vehicles, one is DC fast charging, and the other is AC slow charging. For fast charging and slow charging, many countries will provide different charging interfaces, but the actual role is somewhat different. However, the biggest difference between fast charging and slow charging is that slow charging is charged with standard charging current, while fast charging is charging with a current that exceeds the standard charging current by several times or even dozens of times.

However, when charged to about 80% in fast charging mode, the subsequent power is filled by slow charging.

Although the lithium ions from the positive electrode of the battery cell are migrated to the negative electrode of the battery cell through external electrical energy guidance, fast charging will accelerate the polarization of the battery cell. This situation can be explained in this way: in the state of fast charging, it is quite loose to pour beer into the cup quickly, and the speed of pouring is fast, which will lead to more foam and less beer.

The slow charging state is equivalent to pouring beer into the cup at a slow rate, with less foam and more beer.

Polarization means that when a large current passes through the car battery, the electrodes of the battery will deviate from the electrode potential of the balanced battery. Fast charging is the main reason for the generation of high current, and it is also an important reason for the polarization of automotive battery cells. However, most plug-in hybrid models in the automobile market now use power lithium batteries, which can withstand relatively high charging and discharging power, so they are safer and more reliable than non-power lithium batteries.

In addition, the lithium evolution process will lead to a decrease in lithium ions, which will eventually lead to a decrease in the capacity of the car battery, which in turn will have an impact on the battery life of the car. However, there is no need to worry too much about such a situation, this situation is not irreversible, except for lithium iron phosphate batteries. After fast charging, the car battery is given a short break, and the lithium metal in the battery will turn back to lithium-ion, and the critical temperature will return to normal values.

In general, fast charging is not unavailable, but it is best to choose slow charging for new energy vehicles, and fast charging only in emergencies. In this way, the damage of fast charging to the car battery itself can be reduced as much as possible.

<> "Does fast charging hurt new energy vehicle batteries?"

In recent years, many automobile manufacturers are developing new energy vehicles, and some new energy vehicles will be equipped with fast charging chargers. So the question is, does fast charging hurt new energy vehicle batteries?

Fast charging will have some harm to the new energy vehicle battery, such as damaging the life of the vehicle battery, if the owner uses the fast charging charger for a long time to charge the new energy vehicle, the vehicle's battery may not work.

In addition, fast charging is more likely to cause uneven battery heating, and once there is thermal runaway, there will be a risk of **. Moreover, the working principle of fast charging is to quickly embed ions from the positive electrode into the negative electrode, increasing the flow and speed of ions.

This will cause the electrode concentration polarization phenomenon, which will eventually lead to the destruction of the electrode material, so the longer the fast charging time is used, the more serious the damage will be to the accommodator material. Therefore, for the sake of safety, car owners should try to use fast charging, and Xiangqi hail is only used as a temporary emergency measure, and it is recommended to choose a dedicated adaptive charger for daily charging.