What is the difference between the function of ternary lithium ion battery and lithium iron phosphate battery

1. Choose BYD for bus and Tesla for sedan. This is the difference in volume between the two. Judging from current skills, the energy density of ternary lithium-ion batteries is generally 200Wh/kg, and will probably reach 300Wh/kg in the future; while lithium iron phosphate batteries are fundamentally hesitant at 100~110Wh/kg, and can reach 130Wh/kg. ~150Wh/kg, but it is very difficult to break 200Wh/kg. Therefore, the ternary material power lithium battery can provide twice as much space as the lithium iron phosphate supply, which is very important for cars with limited space. Tesla produces ternary lithium-ion batteries, and BYD produces lithium iron phosphate batteries, so there is a saying that BYD is chosen for buses and Tesla is chosen for cars. 2. Also because of the high energy density, the weight is much smaller, the light weight and the small space occupied by the ternary lithium-ion battery new energy vehicle consumes less power, so it is faster and has a stronger battery life. Therefore, cars can run farther with ternary lithium-ion batteries, while lithium iron phosphate new energy vehicles are basically still used for urban buses at present, because the battery life is not long, and there must be charging piles for charging within a short interval. 3. Although, the recovery of lithium iron phosphate batteries by passenger buses is more focused on the consideration of safety. The fire and chaos of the Tesla car are more than one. The reason is that Tesla’s battery pack is composed of 7,000 pieces of 18650 ternary lithium-ion batteries. The batteries of these units may show an open flame if there is an internal short circuit in the entire battery pack. Extreme collisions disrupted, and short-circuits caused fires. The material of lithium iron phosphate will not burn if it encounters a short circuit, and its high temperature resistance is much better than that of ternary lithium ion batteries. 4. Although lithium iron phosphate batteries can withstand high temperatures, ternary lithium-ion batteries have better low-temperature resistance. They are an important technique for manufacturing low-temperature lithium-ion batteries. At minus 20C, ternary lithium-ion batteries can release 70.14% of the battery. Lithium iron phosphate batteries can only release 54.94% of the capacity, and because under low temperature conditions, the discharge platform of ternary lithium-ion batteries is much higher than the voltage platform of lithium iron phosphate batteries and starts faster. 5. The charging efficiency of the ternary lithium ion battery is higher. Lithium-ion battery charging is the recovery current limiting and voltage limiting method, that is, constant current charging is performed in the first stage, and the current is large at this time, and the efficiency is high. After the constant current charging reaches a certain voltage, it enters the second stage of constant voltage charging. At this time, the current is small and the efficiency is low. Therefore, to weigh the charging efficiency of the two, the ratio of the constant current charging power to the total battery capacity is called the constant current ratio. Try the data to show that the two are not much different when charging under 10C, but there will be a gap between 10C and above. When charging at 20C, the constant current ratio of the ternary lithium-ion battery is 52.75%, and the constant current ratio of the lithium iron phosphate battery It is 10.08%, the former is 5 times that of the latter. 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: Explanation of the difference between lithium ion battery pack and polymer lithium ion battery