The cycle number of the battery and the charging cycle are inextricably linked, the so-called battery cycle charging that is to complete a complete charge and discharge cycle, then the cycle number is actually a calculation of the charging cycle, when the battery reaches a complete charging cycle, the battery cycle number will +1. This article explains how to calculate the cycle number of lithium batteries? How to recycle lithium batteries?
How to calculate the cycle number of lithium battery?
The theoretical life of lithium batteries is about 800 cycles, which is medium in the commercial rechargeable lithium batteries. Lithium iron phosphate is about 2,000 cycles, while lithium titanate is said to be able to reach 10,000 cycles. At present, the mainstream battery manufacturers in their production of the cell specification book promises greater than 500 times, but the cell in the assembly made into a battery pack, due to consistency issues, mainly the voltage and internal resistance is not exactly the same, its cycle life of about 400 times.
① It is better to have a complete discharge and charging process once a week, that is, from red power to full charge, and it is better to realize once a week that the battery is almost exhausted and then filled.
② complete cycle charging means that after the battery is exhausted to 0 and then charged to 100% once, when the power is below 20% and then charged for cycle charging once, lithium batteries do not need to be completely cycle charging for normal use, lithium batteries do not have memory effect and do not require any adjustment.
③ charging to 100% when unplugging the charger is the best moment, charging 100% and then charging for an hour, its unplugging the charger when the battery power is not just good to 100% full, that is, fully charged lithium battery has entered the overcharge protection, has stopped charging, the next time is just battery consumption overcharge, so there is no need to charge more.
How to calculate the number of life cycles of lithium batteries?
Lithium battery life cycle number is based on the quality of the battery and battery materials to determine.
1, the number of cycles of ternary materials about 800 times.
2, lithium iron phosphate battery cycle times about 2500 times.
3, genuine batteries and defective batteries cycle times are different, genuine batteries are designed and produced according to the number of cycles on the battery manufacturer's specifications, while the number of cycles of defective batteries may sometimes be less than 50 times on the side.
How to recycle lithium batteries?
(1) Fire recycling technology: lithium batteries are sorted, crushed and copied into rotary kilns, at a high temperature of 1100~1300 degrees Celsius, zinc and zinc chloride are oxidized to zinc oxide and discharged with the flue gas, zinc oxide is recovered by cyclone dust collector, the residual manganese dioxide and hydromanganese stone enter the residue and then further recover manganese and other substances, general smelters do not need to increase equipment to recover zinc.
(2) Manual sorting and recycling technology: After sorting the dry cell for simple mechanical dissection, the zinc skin, plastic cover, charcoal rod, etc. are separated manually, and the residual Mn02, water manganese stone and other mixtures are sent back to the brick kiln for calcination to make dehydrated Mn02, this method is simple and easy but occupies more labor and has little economic benefit.
(3) The lithium battery of new energy vehicles has high requirements, and when the capacity of lithium battery decays to less than 80%, it cannot meet the demand; we can use the lithium battery in other fields by using the laddering method, such as providing power support for communication base stations, or providing power for low-speed new energy vehicles, and storing energy for the less demanding power supply system.
Discarded lithium batteries contain a large number of non-renewable and economically valuable metal resources, such as cobalt, lithium, nickel, copper and aluminum, etc. If the discarded or unqualified lithium batteries can be effectively recycled, it can not only reduce the pressure of waste filing batteries on the environment, but also avoid causing waste of metal resources such as cobalt and nickel. If lithium batteries can be recycled, 95% of the components can be used in the manufacture of new batteries or used in other industrial fields.
