1. Ambient temperature
The nickel-cobalt-aluminum material used in the ternary lithium-ion battery will have an unstable structure at high temperatures, and there is a danger of explosion, so the high-temperature safety is poor, but the low-temperature performance of the ternary lithium-ion battery is very good;
The high temperature performance of the lithium iron phosphate battery is very good, and it can still be normal at +60 °C. The disadvantage is that the low temperature below -10 ℃ will be greatly discounted or even unusable, which is just the opposite of the ternary lithium-ion battery.
2. Volume and weight
Although lithium iron phosphate is small in size and light in weight, it is worse than ternary lithium-ion batteries. Under the same size conditions, lithium iron phosphate can be loaded with 10AH, and ternary lithium-ion batteries can usually be loaded with more than 15AH.
3. Energy density
Lithium iron phosphate battery, the single energy density is 120Wh/kg, and the group is 80Wh/kg;
The ternary lithium-ion battery has an energy density of 180Wh/kg, and the energy density after grouping is 110Wh/kg. From the data point of view, the ternary lithium-ion battery is better than lithium iron phosphate in terms of energy density.
4. Security
The liquid electrolyte of ternary lithium-ion battery is flammable and explosive, and it is easy to trigger thermal runaway during long-term use, causing potential safety hazards;
Lithium iron phosphate batteries are high temperature resistant, very stable, and have high safety.
5. Cost
The ternary lithium-ion battery is a lithium-ion battery with nickel cobalt lithium manganate as the positive electrode material and graphite as the negative electrode material, so the cost will be much more expensive;
Lithium iron phosphate batteries do not contain precious metal materials, so compared with ternary lithium ion batteries, the price of lithium iron phosphate is already cheap.
6. Use process
Although the ternary lithium-ion battery has a high density of battery cells, due to its poor safety and high temperature resistance, it must be combined with a set of complex battery protection equipment, and these devices have increased the weight, making the ternary battery in terms of energy density. the advantage is diminished;
Batteries composed of lithium iron phosphate cells are relatively simple, and do not protect auxiliary equipment too much.
