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The Mainstream Type of Lithium Battery in Electric Vehicle Industry

Jun 15 , 2021

1. Classification of lithium batteries

Lithium batteries are classified according to their appearance: there are square lithium batteries (such as commonly used mobile phone battery cells) and cylindrical (such as 18650); according to the outsourcing materials, lithium batteries can be divided into: aluminum shell lithium batteries, steel shell lithium batteries, and  pouch batteries; According to the positive and negative electrode materials (additives), lithium batteries can be divided into: LiCoO2 battery or LiMn2O4, lithium iron phosphate battery, and disposable manganese dioxide lithium battery. According to different performance purposes, lithium batteries can be divided into: high-capacity (high-platform) lithium batteries, used in mobile phone digital products; high-rate lithium batteries, used in electric vehicles and power tools and airplane models; high-temperature-resistant lithium batteries, used for lighting in miner's lamp room, as the built-in backup power of machines; low temperature resistant lithium battery, used in outdoor environment of winter.

2. Introduction of lithium iron phosphate battery pool

Lithium iron phosphate is used as a material for lithium power batteries. Lithium iron phosphate batteries have only appeared in recent years. Their safety performance and cycle life are unmatched by other materials. These are also the most important technical indicators of power batteries. The 1C charge-discharge cycle life is up to 2000 times. Single-cell battery will not burn or explode when overcharged at 30V. Lithium iron phosphate cathode materials make large-capacity lithium-ion batteries easier to use in series to meet the needs of frequent charging and discharging of electric vehicles. Lithium iron phosphate is non-toxic and non-polluting, with advantages of good safety performance, wide sources of raw materials, low price, and long life. Therefore, it is an ideal cathode material for a new generation of lithium batteries.