Nowadays, new energy vehicles, especially pure electric vehicles or plug-in hybrid vehicles, usually use lithium batteries, that is, ternary lithium batteries or lithium iron phosphate batteries.

And the expensive part of electric vehicles is the battery. Even when the value of the battery exceeds the overall value of the car by more than 50%, but as long as the battery has a life span, the battery of many new energy vehicles now.

The general warranty is 6 to 8 years. Or 100000 to 150000 kilometers. If the warranty period of our car comes out a few years later, the electric cars we bought that year, whether in terms of electric control or battery technology, may have fallen behind for a long time, but we will spend tens of thousands more to replace the battery, which is obviously not worth it for a long time, so it is more cost-effective for us to protect the battery for several years.

Use less and spend less

The core indicator of the battery life of our cars is the number of charging and discharging cycles, which is usually more than 1000 times. If we go from 0 to 100 percent and then to 0, it is regarded as a complete cycle.

The longer the mileage/year we use and the higher the frequency of use, the faster the battery will decay. However, if we use fewer cars, the decay will naturally be slow. In a word, it costs more to use more, less to use less, and no use is also expensive, because the battery will slowly self discharge. Then we consider that the car is bought for use, so there is no need to deliberately save the battery in terms of the strength of the car.

Shallow charging and shallow discharging

In the past, I only knew that shallow charging and shallow discharging of batteries must have a longer life than deep charging and deep discharging. But I didn't expect that it would be so much worse before I checked the data,

break off both ends

In terms of the electrochemical characteristics of the battery for the maintenance of new energy vehicles, the charging power is limited when the battery is high, the discharge power is high, and the discharge power is limited when the battery is low, and the charging power is high. This is why many vehicle power batteries charge 80% of their power, and the charging speed drops sharply, and more than 95% of them enter the trickle state.

On the other hand, when the electric charge is less than 20%, the power performance of the electric vehicle is far from the outstanding performance in the acceleration test, and when it is less than 5%, it can only drive at tortoise speed. When the power is close to 50%, the charging and discharging performance can reach a good level, and the power is good and the charging is fast. I also named it "the principle of pinching the head and eliminating the tail".

This is like a disposable plastic cup, which is easy to spill when it is filled with water, and easy to pour when it is not filled with water. In fact, "half bottle banging" is a comfortable state

Avoid too high and too low ambient temperature

If the temperature is too high or too low, it will actually hurt the storage and use of the battery. If you live in the northeast or northwest, where it is very cold in winter, it is better to buy a pure electric vehicle and store it in a garage. If you drive in winter, you should try not to park it outdoors for too long.

In addition, the heat dissipation of batteries and electric control systems in summer also needs to be noted. Electric vehicles have antifreeze in the same place as fuel vehicles, so electric vehicles are used to dissipate heat for electric control systems and batteries, and must be checked regularly. Guangxi TESTU Automobile Technology Co., Ltd

Stop driving

If our electric vehicles stop driving for a long time, it is better to park them in a garage with a temperature of 10 to 20 degrees, charge the batteries with 70 to 80 percent of the power every minute, and check the power every month.

The other thing is that after all, the car is a tool that needs to be used, so we should not give up eating because of choking. So we should try to be friendly to the battery without affecting our own use. With limited investment, we can actually achieve maximum returns.

We should control the charging of electric vehicle batteries at about 30%. There are some users who like to charge as soon as they are used, and there are also some users who like to recharge after they are used up. In fact, this is wrong.

First of all, lead-acid batteries have a certain number of charging and discharging times. If they are charged frequently, their service life will also be affected. Secondly, if the lead-acid battery is recharged after being used up, it will cause over discharge of the battery for a long time, which also affects the service life of the battery.

So the correct approach is that we should control the charge at about 30% of the power for a long time, because this can effectively extend the service life of the battery.