Now more and more car brands have begun to launch their own electric models. In recent years, new energy vehicles have gradually become the choice for people to buy a car, but then comes the question of how long the battery life of new energy vehicles is. About this issue today Let’s have a chat.
Regarding the battery life of new energy vehicles for several years, theoretically speaking, the battery life of new energy vehicles can be ten years or even longer. However, foreign media reports mentioned that the current life of new energy vehicles is generally only about five years, which means that the battery of new energy vehicles can be used for about five years. Had to scrap and replace.
According to the life of the battery, it is basically about 6-8 years of use. Generally speaking, the life of a lithium battery is determined the moment the battery is made into a finished product. Taking the ternary lithium battery as an example, according to the material of the battery cell, the cycle life of the battery is about 1500 to 2000 times. If it is assumed that the new energy vehicle can run 500km in a complete cycle, it means that 30- The number of cycles of the battery will be used up after 500,000 kilometers.
According to the time, about 30,000 kilometers a year, it can be used for nearly ten years, but it may not be used for that long in reality. The specific service life depends on the usage habits and environment. At present, the nominal capacity at the end of the battery life is 80%. Since the battery decay is irreversible, the only thing that can be done is to replace the battery. According to the current technical level of lithium batteries, if used properly for vehicles, the life of lithium batteries can be used for at least 6 years.
A friend asked, my new energy vehicle battery has not been five years old, but the cruising range has dropped significantly. I used to be able to run more than 300 kilometers on a full charge, but now I can only run 200 kilometers on a full charge. Why is this? ?
1. Charge frequently. Many new energy vehicles support fast charging mode, so many car owners will choose fast charging to charge the car with a certain amount of power in a short period of time to ensure the normal driving of the vehicle. Fast charging is a good function, but frequent use of fast charging will reduce the battery’s restoring ability, thereby reducing the number of cycles of charging and discharging, causing certain damage to the battery.
2. Parking at low temperature for a long time. At present, the new energy vehicle batteries on the market are mainly divided into ternary lithium batteries and lithium ion phosphate batteries. Although they perform differently in the face of low temperature, no matter what kind of battery technology, there are batteries in the face of low temperature environments. attenuation phenomenon.
3, often low battery charging. Since there is no battery memory effect in lithium-ion batteries, electric vehicles are like our smartphones, which can be charged at any time, and try not to use up the power while charging.
4. Bigfoot throttle. Because electric vehicles have a characteristic, that is, the acceleration performance is excellent, so some car owners like the big-footed accelerator, and the feeling of pushing back comes immediately. However, it should be clear that the large current will cause a sharp increase in the internal resistance of the battery, and frequent driving in this way may even damage the battery.
Therefore, the battery life of an electric vehicle mainly depends on the use environment and method of use. Due to various influences in real life, especially when the battery is in use, the depth of charge and discharge is not fixed, so the service life of the battery can only be used as a reference. Therefore, instead of worrying about the life of the power battery pack, it is better to pay attention to the usual car habits.
Post time: May-21-2022