How long can the lithium battery of a pure electric vehicle last?

For new energy vehicles, battery life is mainly divided into cycle life and service life. At present, the power lithium-ion batteries used in automobiles are roughly divided into lead-acid batteries, lithium batteries, nickel-hydrogen batteries, etc., and the most mature ones are ternary lithium batteries and lithium iron phosphate batteries. The lifespan of lithium iron phosphate batteries and ternary lithium batteries also have their own advantages. The theoretical cycle life of ternary lithium battery is about 1500 times. In actual use, the full charge and discharge cycle is more than 800 times, and the actual use can reach more than 1200 times when the battery is controlled to discharge at 25%-75%. Based on a general ternary lithium battery electric vehicle with a battery life of 200 kilometers, one complete cycle can actually travel 180 kilometers, and 800 cycles can travel 144,000 kilometers. Counting normal attenuation, 120,000 kilometers is not stressful. The charge-discharge cycle life of lithium iron phosphate batteries can generally reach more than 2000 times. Even for a car with a battery life of only 70 kilometers, 2000 cycles can support 140,000 kilometers of pure electricity. The only disadvantage is low energy density and low temperature attenuation. Obviously, the capacity will decrease by about 10% at 0°C, and the capacity will decrease by about 30% at -20°C. In addition to the recharge and discharge cycle of the battery itself, the shelf life is also an important factor in weighing the performance of the secondary battery. As the saying goes, the car is not afraid to drive, and you are afraid that you will not drive it. As far as new energy vehicles are concerned, not driving the car is equivalent to reducing the service life, but Sapphire knows that the current lithium iron phosphate battery and ternary lithium battery are used in wet storage. Basically, the life span can reach more than 10 years. In recent years, with the rapid development of my country's new energy vehicle market, the demand for power lithium batteries has increased significantly. With the continuous increase in the energy density requirements of lithium batteries, the market demand for ternary materials has always maintained an upward trend. According to the data, the output of new energy passenger vehicles in my country is expected to reach 800,000, 1.24 million and 1.94 million respectively from 2018 to 2020, which will drive the demand for ternary batteries by 30GWh, 51GWh and 89GWh, which will be converted into three yuan for the next three years. The demand for cathode materials will reach 52,000 tons, 82,000 tons, and 137,000 tons, respectively. The corresponding ternary cathode market scale for electric vehicles is 11.4 billion yuan, 16.3 billion yuan, and 24.5 billion yuan respectively. The total market size is More than 50 billion yuan. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the requirements of lithium battery pack assembly for lithium battery protection board