How many times is the life cycle of ternary lithium battery

With the promotion of social energy conservation and environmental protection, more and more environmental protection products are applied to the market. In the battery industry, ternary lithium battery with many advantages quickly occupied the market, and gradually replaced the traditional lead-acid battery. For the traditional battery, the ternary lithium battery has the advantages of long life, energy conservation, environmental protection and pollution-free, low maintenance cost, complete charging and discharging, light weight and so on. In general, the ternary lithium battery has a long life, to what extent?            Ternary lithium battery            What is a ternary lithium battery?            In nature, lithium is a light metal with small atomic mass. Its atomic weight is 6.94g/mol, ρ = 0.53g/cm3. Lithium is a kind of material with high specific energy because of its active chemical property, easy to lose electrons and be oxidized to Li +, so the standard electrode potential * is negative, which is - 3.045v, and the electrochemical equivalent * is small, which is 0.26g/ah. The ternary lithium battery is a kind of lithium secondary battery which uses three kinds of transition metal oxides of nickel cobalt manganese as positive materials. It fully integrates the good cycle performance of lithium cobalt oxide, the high specific capacity of lithium nickel oxide, the high safety and low cost of lithium manganate, and uses the methods of molecular level mixing, doping, coating and surface modification to synthesize the composite lithium intercalation oxides of nickel, cobalt and manganese. It is a kind of lithium-ion rechargeable battery which has been widely studied and applied.            Ternary lithium battery life            The so-called life of lithium battery means that after a period of use, the capacity of the battery decays to 70% of the nominal capacity (room temperature 25 ℃, standard atmospheric pressure, and battery capacity discharged at 0.2C), which can be regarded as the end of life. In the industry, the cycle life is generally calculated by the cycle times of full discharge of lithium battery. In the process of use, irreversible electrochemical reaction will occur inside the lithium battery, which will lead to the capacity reduction, such as the decomposition of electrolyte, the deactivation of active materials, the collapse of positive and negative pole structure, which will lead to the reduction of the number of lithium ion embedding and deblocking, and so on. Experiments show that a higher rate of discharge will lead to a faster capacity attenuation. If the discharge current is low, the battery voltage will be close to the balance voltage, which can release more energy.            The theoretical life of ternary lithium battery is about 800 cycles, which is medium in the commercial rechargeable lithium battery. Lithium iron phosphate is about 2000 times, while lithium titanate is said to be able to achieve 10000 cycles. At present, the mainstream battery manufacturers promise more than 500 times (charging and discharging under standard conditions) in their specifications of ternary cell, but after the cell is assembled into a battery pack, due to the consistency problem, the main reason is that the voltage and internal resistance cannot be exactly the same, and the cycle life is about 400 times. The manufacturer recommends 10% - 90% SOC service window. It is not recommended to conduct deep charging and discharging, otherwise it will cause irreversible damage to the positive and negative pole structure of the battery. If the calculation is based on shallow charging and shallow discharging, the cycle life will be at least 1000 times. In addition, if the lithium battery is often discharged in high rate and high temperature environment, the battery life will be greatly reduced to less than 200 times.            The life cycle times of lithium battery are determined according to the battery quality and battery material:            1. The cycle times of ternary materials are about 800.            2. The cycle times of lithium iron phosphate battery are about 2500.            3. There is a difference between the cycle times of the genuine battery and the defective battery. The genuine battery is designed and produced according to the cycle times in the battery manufacturer's specifications, while the cycle times of the defective battery may be less than 50 times.            Ternary lithium battery life            The so-called life of lithium battery means that after a period of use, the capacity of the battery decays to 70% of the nominal capacity (room temperature 25 ℃, standard atmospheric pressure, and battery capacity discharged at 0.2C), which can be regarded as the end of life. In the industry, the cycle life is generally calculated by the cycle times of full discharge of lithium battery. In the process of use, irreversible electrochemical reaction will occur inside the lithium battery, which will lead to the capacity reduction, such as the decomposition of electrolyte, the deactivation of active materials, the collapse of positive and negative pole structure, which will lead to the reduction of the number of lithium ion embedding and deblocking, and so on. Experiments show that a higher rate of discharge will lead to a faster capacity attenuation. If the discharge current is low, the battery voltage will be close to the balance voltage, which can release more energy.            The theoretical life of ternary lithium battery is about 800 cycles, which is medium in the commercial rechargeable lithium battery. Lithium iron phosphate is about 2000 times, while lithium titanate is said to be able to achieve 10000 cycles. At present, the mainstream battery manufacturers promise more than 500 times (charging and discharging under standard conditions) in their specifications of ternary cell, but after the cell is assembled into a battery pack, due to the consistency problem, the main reason is that the voltage and internal resistance cannot be exactly the same, and the cycle life is about 400 times. The manufacturer recommends 10% - 90% SOC service window. It is not recommended to conduct deep charging and discharging, otherwise it will cause irreversible damage to the positive and negative pole structure of the battery. If the calculation is based on shallow charging and shallow discharging, the cycle life will be at least 1000 times. In addition, if the lithium battery is often discharged in high rate and high temperature environment, the battery life will be greatly reduced to less than 200 times.            Hebei Xinli power has long been manufacturing battery packs, ternary lithium batteries, lithium iron phosphate batteries, lithium iron manganate batteries, lithium-ion batteries and so on. Our products are widely used and of high quality. Xinli power is the top battery brand in China.            In today's lithium battery market, ternary lithium battery is widely used as a kind of battery with moderate performance and low price. Therefore, the price performance ratio of ternary lithium battery is *. People always say that ternary lithium battery has a long life. How long is it? The ternary polymer lithium battery refers to the cathode material of lithium nickel cobalt manganate (Li (NiCoMn