How long is the cycle life of a lithium battery

The attenuation coefficient of the service life of the lithium battery cycle system, in fact, is the full available capacity of the rechargeable battery today, and the short-circuit capacity between the two at the original factory shows a tendency to continue to decrease. For an idealized lithium battery, the volume balance will not change during the cycle time of the circulatory system. The original volume of each circulatory system should be a special value, but the details are much more complicated. All adverse reactions that can cause or consume lithium batteries will cause changes in battery power balance. Once the battery power balance changes, such changes will be irreversible and can accumulate in several cyclic systems, which will seriously harm charging. The circulatory system characteristics of the battery. There are many factors that endanger the life of the lithium battery's circulatory system, but the straightforward reason is that the total number of lithium batteries participating in the kinetic energy transmission continues to decrease. It must be emphasized that the total output of lithium elements in rechargeable batteries has not decreased, but the active lithium batteries are becoming less and less. They are restricted to other places or the safe passage of themed activities, and they cannot participate in the full charge and discharge of the circulatory system. process. Under normal conditions, lithium batteries operate for 2 to 4 years, and the recharge frequency of the recycle battery is about 300 times. According to the quality of the rechargeable battery and the materials of the lithium battery, the frequency of the life of the lithium battery is clarified: 1. The frequency of the cycle system of the ternary material is around 800. 2. The cycle frequency of lithium iron phosphate battery is about 2500 times. 3. There is a difference between the frequency of the genuine lithium battery cycle system and the frequency of the defective lithium battery cycle system. The genuine rechargeable battery is designed, manufactured and manufactured in accordance with the cycle system frequency in the manufacturer’s instructions. The frequency of the defective battery cycle system is sometimes very high. It may not be easy to circulate the system 50 times. The service life of the current 18650 same cycle system can reach 500~1000 times. If it is a rechargeable battery processed by a reliable manufacturer, the service life of the 18650 same cycle system can reach 2000 times. Of course, if it is a defective product Or counterfeit rechargeable batteries, then they are too short. Its service life is divided into cycle time service life and schedule service life. Cycle time service life refers to the frequency of the battery charging cycle time of a rechargeable battery; calendar table service life refers to the time from manufacturing to completion of the rechargeable battery. The service life of this type of cycle system refers to the frequency of recharging the battery of the lithium battery recyclable system. A battery charge and a thorough battery charge are closely combined, that is, under the ideal temperature and environmental humidity, the battery is charged and discharged according to the rated value of the battery charge and charge and discharge current, and the battery power attenuation coefficient is measured to a certain level (such as 80 %) the frequency of the circulatory system. The national industry standard stipulates that the lithium cell and control module of the power lithium battery can maintain more than 90% of the initial state after 500 specific cycles, and can still maintain more than 80% of the volume after 1,000 battery charging cycles. , It is the most basic regulation for the service life of the power lithium battery sales market. 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: How to ensure the balance between the performance and safety of the power lithium battery car