How long is the battery life of new energy vehicles?

There are two important factors affecting the battery life of a new energy vehicle: the number of charging cycles and the time. In addition, there are several secondary influencing factors: uniform charge and discharge power, battery storage and working environment temperature, charge and discharge depth. The number of charging cycles is usually 1000-2000 times under ideal conditions, and more than 70% of the usable capacity can be guaranteed. If it is a PHEV, the general mileage of a single cycle is about 50-80 kilometers, so before the battery is scrapped, about 100,000 kilometers can be used for pure electricity. But because PHEVs often have a lot of mileage hybrid, they can probably be charged according to the number of times. In any case, the battery capacity of PHEV is small, so the service life is short. In theory, the useful life of a PHEV private car is about 5-10 years. However, the BEV of a pure electric vehicle is easier to calculate. Take the mainstream 400-kilometer model as an example. A single charge can travel 400 kilometers. According to at least 1,000 cycles, the theoretical usable life is 400,000 kilometers. If 100,000 kilometers per year (operating vehicles), the theoretical life span is 4 years. If 20,000 kilometers per year (private car), the theoretical life span is 20 years. Normally, as long as the lithium battery is properly maintained, it can be used for 10 years without any problems. At least the battery of my Nokia 3120 cell phone still has electricity. If it takes a longer time, it is more difficult to say because of various maintenance problems and the decay of the active material of the battery itself. From the practical experience, it is no problem for lithium batteries to have a calendar life of more than 10 years under proper storage conditions, but it is hard to say more than 20 years. In short, the uniform power of charge and discharge is: fast charge affects battery life. In the same car, fast charge and slow charge are in the attenuation of the battery, the former is slightly faster, but it is not clear. People in the battery industry have also said that slow charging is beneficial to battery life, but the impact of fast charging is actually not as clear as imagined. During the normal life of the vehicle, the difference between the two is not very large. Battery storage and operating temperature temperature also have a greater impact on battery life. If the battery is operated below 0 degrees Celsius or above 40 degrees Celsius for a long time, it will accelerate the aging and capacity decay of the battery, and this decay is irreversible. Fortunately, today's new energy vehicles are basically equipped with a battery temperature control system, which can make the battery pack work at a more suitable temperature. Although the depth of charge and discharge has a secondary impact on battery life, it may cause fatal damage to the battery during use. When the lithium battery maintains 100% power for a long time, it will accelerate the progress of battery damage. It is recommended that the battery power is lower than a certain set value, such as 70% before charging, so as to give the battery time to rest and disconnect the power appropriately. But this problem does not exist in new energy vehicles, because the car cannot always have 100% electricity. So don't worry too much about this. Relatively pay attention to the depth of discharge. Although the lithium battery has a long life, it can't help being over-discharged. What is called a deep discharge? If the battery is used below 5%, or even below 0%, if the battery is not charged for a long time, the battery will be starved to death, and there will be no hope of resurrection. If the battery is left for half a month after deep discharge, the battery life will be terminated immediately. If the battery life is used normally, the battery life of PHEV is 5-10 years, and the battery life of BEV is 10-20 years. The larger the battery capacity, the longer the pure electric cruising range, and the longer the battery life. Che Meifu reminds you: Long time after deep discharge. Just once, the battery will be permanently obsolete. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete it.