The sales of new energy vehicles are rising steadily. When many small partners choose new energy vehicles, they will always see different types of batteries used by different brands. LiFePO4 battery pack ，Today, I will tell you about the differences, advantages and disadvantages of various lithium batteries.
Lithium iron phosphate battery
Lithium iron phosphate battery composition: Lithium iron phosphate battery is a lithium ion battery using lithium iron phosphate (LiFePO4) as the positive electrode material and carbon as the negative electrode material.
Advantages: 1. High temperature resistance of the battery: the thermal runaway temperature can reach 500 ℃, the safety is higher, and the probability of spontaneous combustion is low. 2: High cycle life, high recycling value, 3. Low cost: It does not contain rare elements such as cobalt and nickel, the acquisition of raw materials is relatively simple, and the cost is lower, and it will not be stuck.
Disadvantages: 1. The low temperature performance is poor; the working performance at minus 20° is attenuated by more than half, which is what many friends say that the battery life in winter has shrunk seriously. 2. Low energy density; the general unit density is 180Wh/kg, and the battery volume and weight are large.
Ternary lithium battery
The composition of ternary lithium battery: ternary polymer lithium battery, refers to the lithium battery using the ternary positive electrode material of nickel cobalt lithium manganate (Li(NiCoMn)O2) or nickel cobalt aluminum aluminate as the positive electrode material, ternary composite positive electrode material It is made of nickel salt, cobalt salt and manganese salt.
Advantages: 1. Under low temperature conditions, the power attenuation is small. 2. The unit energy density is high, and more electricity can be stored under the same volume.
Disadvantages: 1. The unit energy density is high, and the impact is prone to thermal runaway and fire. 2. The cycle life is not as good as that of lithium iron phosphate. 3. The cost is high, and there are many applications of precious metals such as nickel and cobalt.