What improper use will lead to the loss of battery life?

　　At present, the new energy vehicle power battery sold on the market is lithium ion battery, among which lithium ion battery can be divided into lithium iron phosphate battery and ternary lithium battery. However, most consumers are laymen. They don't know which is better, lithium iron phosphate battery or ternary lithium battery? Today we will introduce the difference and service life between lithium iron phosphate battery and ternary lithium battery in detail. What is lithium iron phosphate battery? Lithium iron phosphate battery is a kind of lithium ion battery with lithium iron phosphate as cathode material. It has the characteristics of strong safety and stability, high temperature resistance, good cycle performance, etc. What is a ternary lithium battery? The ternary lithium battery, also known as "ternary polymer lithium battery", refers to the lithium battery with lithium nickel cobalt manganate or lithium nickel cobalt aluminate as the cathode material. Due to its smaller size and higher capacity density, ternary lithium batteries are widely used in new energy vehicles, such as the well-known Tesla. All models use ternary lithium batteries

　　1. Battery energy density: ternary lithium>lithium iron phosphate. Generally speaking, in the case of unit volume or weight, the ternary lithium battery can store more electric energy, and the vehicle mileage will be larger. This is because the electrode materials of the two are different. The cathode material of lithium iron phosphate battery is lithium iron phosphate, while the ternary lithium battery is nickel cobalt manganese or nickel cobalt aluminum. Due to different chemical characteristics, the energy density of ternary lithium battery is 1.7 times that of lithium iron phosphate under the same mass

　　2. Safety performance: lithium iron phosphate>lithium ternary. Among the current mainstream automotive batteries, lithium iron phosphate has the best thermal stability. When the ambient temperature reaches 600 ℃, it starts to dissolve. In contrast, ternary lithium batteries begin to dissolve at about 300 ℃. In the event of spontaneous combustion, the ternary lithium battery model really accounts for a larger proportion

　　3. Low temperature performance: ternary lithium>lithium iron phosphate pure electric vehicle cruise range attenuation has become the default phenomenon in the industry. At low temperature, the performance of lithium iron phosphate battery is worse than that of ternary lithium battery. When lithium iron phosphate is at - 10 ℃, the battery capacity drops to about 50%, and it cannot work above - 20 ℃. The lower limit of lithium ternary is - 30 ℃. At the same temperature, the attenuation is less than that of lithium iron phosphate

　　4. Service life: lithium iron phosphate>ternary lithium automotive battery pack is the same as mobile phone battery. When the chemical substance in it loses its activity after multiple reactions, the total power decreases. Lithium iron phosphate can be charged 3500 times and then attenuated to 80% of the mandatory replacement limit. It is estimated that it can be used for more than 10 years. Lithium terpolymer decays to the limit value after about 2000 times of charging, and can only be used for about 6 years. Comprehensive evaluation: ternary lithium battery is suitable for passenger cars, lithium iron phosphate battery is suitable for passenger cars, and it will become the world's solid state battery in the future. The safety performance, density capacity, service life and low temperature performance of the battery were compared. Both have their own advantages. BYD, represented by lithium iron phosphate, believes that its safety performance is better. Tesla uses ternary lithium battery, which has significant durability advantages. The weakness of endurance will make consumers unconsciously ignore other advantages. Since BYD began to use ternary lithium batteries, the century war between the two types of batteries has also ended. It can only be said that in the field of household cars, the comprehensive performance of ternary lithium batteries obviously meets the market demand

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