At present, Electric SUV Car power batteries are lithium-ion batteries, and their structures can be divided into positive materials, negative materials, battery separators, electrolytes and other parts. From the front material, Electric SUV Car manufacturers tell you that power batteries can be roughly divided into two types: lithium iron phosphate batteries and ternary lithium batteries.
The so-called lithium iron phosphate battery refers to a lithium-ion battery using lithium iron phosphate as a material, while a ternary lithium battery is a lithium-ion battery made of three materials: nickel cobalt aluminum or nickel cobalt manganese in a certain proportion.
Compared with lithium iron phosphate batteries, the advantage of ternary lithium batteries is their high energy density. It can increase battery energy density by adjusting the proportion of nickel. When Electric Car regard driving range as the primary technical parameter, ternary lithium batteries with higher energy density have become the primary choice for Electric SUV Car power batteries, and the current installed volume has reached about 60.
At the end of 2018, the energy density of a single cell of my country's ternary lithium battery reached 265Wh/kg. In 2019, the 811 ternary lithium battery with an energy density as high as 304Wh/kg was launched. The use of high-energy-density ternary lithium batteries has enabled my country's mainstream Electric Car to have a driving range of more than 400 kilometers, and some models have a driving range of even as high as 500 kilometers, effectively alleviating the range anxiety of Electric Car. However, high energy density also brings high risks. Its stability is relatively poor and may cause combustion accidents.