What is the battery life of the new energy vehicle? How to maintain the new energy vehicle battery? How to deal with the new energy vehicle battery retirement?

Battery life has "dry storage life" and "wet storage life". These two concepts are only for the size of the battery self-discharge, not the actual life of the battery. The true life of the battery is the length of time the battery is actually used. For a primary battery, the life of the battery is a function of the operating time (depending on the magnitude of the discharge rate) that gives the rated capacity.

For the secondary battery, the life of the battery is divided into two types: the charge and discharge cycle life and the wet shelf life. The charge and discharge cycle life is an important parameter to measure the performance of secondary batteries. Subject to one charge and discharge, it is called a cycle (or a cycle). Under a certain charge and discharge system, the number of charge and discharge cycles that the battery can withstand before the battery capacity drops to a certain value is called the charge and discharge cycle life of the secondary battery.

The longer the charge and discharge cycle life, the better the performance of the battery. In the commonly used secondary batteries, the charge and discharge cycle life of the cadmium nickel battery is 500 to 800 times, the lead acid battery is 200 to 500 times, the lithium ion battery is 600 to 1000 times, and the zinc and silver battery is very short, about 100 times.

The charge and discharge cycle life of the secondary battery is related to conditions such as depth of discharge, temperature, and charge and discharge system. The term "discharge depth" refers to the percentage of the capacity discharged by the battery to the rated capacity. By reducing the depth of discharge (ie, "shallow discharge"), the charge and discharge cycle life of the secondary battery can be greatly extended.

Wet shelf life is one of the important parameters to measure the performance of secondary batteries. It refers to the time when the battery is charged and discharged after the electrolyte is added until the end of the charge and discharge cycle life (including the time during which the battery is in the discharge state during the charge and discharge cycle). The longer the wet shelf life, the better the battery performance. Among the commonly used batteries, the cadmium nickel battery has a wet shelf life of 2 to 3 years, a lead-acid battery of 3 to 5 years, a lithium ion battery of 5 to 8 years, and a zinc-silver battery has the shortest time of only about 1 year.

1, please start lightly

If the new energy vehicle slams on the acceleration at the start, it will cause the battery to discharge at a high current. The high current discharge will easily produce lead crystallization, which will damage the physical properties of the battery plate and affect the service life. Therefore, remind the majority of car owners here, do not worry about starting.

2, to prevent exposure and cold

If the new energy vehicle is exposed to the sun for a long time, the temperature will be too high, which will increase the internal pressure of the battery and cause the battery to lose water, causing the battery activity to decrease and accelerate the aging of the plate. If it is stopped in a cold environment for a long time, it will The impact on the endurance of the battery has a sharp decline, and will have a negative impact on battery performance. Many car owners in the northern region have reported that new energy vehicles are not willing to turn on air conditioners during the winter, or they are worried that their endurance will be even worse.

3, charging time is not as long as possible

New energy vehicles should not overcharge, over discharge and undercharge, which will shorten battery life. During the use process, the charging time and frequency should be determined according to the actual vehicle condition. If the battery indicator light is on, it should be charged as soon as possible. Otherwise, the battery will be over-discharged, which will affect the service life. And the charging time should not be too long, otherwise it will form overcharge and make the battery heat. If the battery temperature exceeds 65 °C during the charging process, the charging should be stopped immediately to avoid danger.

4, develop a good habit of regular inspection

Whether it is a drive-driven car or a new-energy car, regular inspections of the car are an essential part. If the mileage of the new energy vehicle suddenly drops sharply during the use, it is very likely that there is at least one battery in the battery pack. At this time, it should be rushed to the repair shop for timely treatment.

5, parking vehicles for a long time should also be charged

Some car owners believe that if the vehicle is not used for a long time, it is not worried that the new energy vehicle will be parked in a deficient state. It is only necessary to charge the car before the next use. This is a big mistake. When the battery is stored in a depleted state, it is prone to sulfation, and the lead sulfate crystals adhere to the plate, which is extremely harmful to the battery. Therefore, the car with the above habits is mainly changed in time.

6, the battery and the tire pressure has a close relationship

This principle is the same as that of a conventional drive car. Incorrect tire pressure can cause a lot of power consumption, short mileage, and also reduce the life of the tire, and also poses a certain threat to driving safety.

Don't underestimate the maintenance of new energy car batteries. The battery is the most critical "heart" part for new energy vehicles. At this time, some friends have to ask questions. Even if daily care is taken, how long will the battery life last? ? Xiao Bian specifically asked the internal staff of BAIC New Energy. According to the staff, if the daily maintenance is proper, the battery will perform effectively for about 6 years. Of course, the battery life mentioned here means that the battery charging capacity has dropped to 70%, not 100%. Therefore, the majority of car owners for the six years of peace of mind, daily maintenance work is essential.