What is the intuitive difference between a ternary lithium battery and a lithium iron phosphate battery?

　　Ternary lithium batteries and lithium iron phosphate batteries, both of which are the types of batteries that can often be seen on the market now, are also widely used in our lives. Such as mobile phones, flashlights, electric cars, photovoltaic power generation, outdoor power supplies and so on.

　　Here is a brief introduction for everyone, so that everyone has an intuitive impression of these two kinds of batteries.

　　Low temperature performance: the low temperature performance of the ternary lithium battery is better

　　"Relative 25°C capacity" refers to the ratio of the discharge capacity under different temperature conditions to the discharge capacity at 25°C. This value can accurately reflect the attenuation of battery life under different temperature conditions. The closer to 100%, the better the battery performance.

　　Taking 25°C as the reference room temperature, the two types of batteries are discharged at a high temperature of 55°C and discharged at a normal temperature of 25°C, and there is almost no difference in discharge capacity.

　　But at minus 20°C, the ternary lithium battery has obvious advantages. Customers in different regions must consider this when choosing lithium battery materials.

　　Energy density: Ternary lithium battery is better than lithium iron phosphate battery.

　　At present, new energy vehicles mainly use lithium iron phosphate power batteries, but the theoretical energy density of lithium iron phosphate power batteries is limited. The energy density of lithium iron phosphate batteries is 120Wh/kg, and the energy density after grouping is 80Wh/kg.

　　The energy density of the ternary battery is relatively high. The energy density of the ternary lithium battery is 180Wh/kg and 110Wh/kg after grouping. The corresponding advantages are obvious.

　　Therefore, in terms of energy density, ternary lithium batteries are superior to lithium iron phosphate batteries.

　　Safety: Lithium iron phosphate battery is better than ternary lithium battery.

　　In terms of safety, lithium iron phosphate batteries have more advantages than ternary lithium batteries. The reason is that the ternary material will self-heat when it exceeds 180°C, and it is difficult to control it after a fire occurs, while the lithium iron phosphate material will not produce heat until 250°C.

　　With the development of technology, many manufacturers have developed excellent battery management systems, and safety issues have been greatly improved.

　　Cycle life: Lithium iron phosphate battery is better than ternary lithium battery.

　　This is the strength of lithium iron phosphate batteries because of its extremely high stable chemical properties. The cycle life of lithium iron phosphate batteries is generally more than 4000 times. The ternary lithium battery is limited by its chemical structure, and its cycle life is about 1,000 times.

　　Of course, the cycle life mentioned above only refers to the battery cell. When many cells are combined into a battery pack and then placed in a real application environment, the life of the battery pack will be reduced. The essential reason is that the battery cannot be in the real environment, and the superior environment like the laboratory will naturally affect the life.

　　And surely, what users care about is the life of the finished battery pack, so on the one hand, many manufacturers strive to improve the cycle life of the battery cell, on the other hand, they invest huge research and development funds to develop a battery that can make every battery cell fit. A system that works in an environment.