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Classification of lithium batteries
- Jul 28, 2018 -

A lithium battery uses a lithium metal or lithium alloy as the plate material and a nonaqueous electrolyte solution. Because lithium is very active in chemical reaction, it is difficult to process and store. 

High production cost deterred the development of lithium batteries for a long time. In recent years, with the maturity of the separator technology and commercial production of lithium-ion compounds, the cost has been greatly reduced due to its light weight, large capacity, long life, and no pollution. 

Lithium batteries will gradually replace lead-acid batteries and become a mainstream battery type. It will be used in power tools, electric bicycles, electric motorcycles, electric vehicles, military equipment, aerospace, mobile power supplies, emergency lights, flashlights, razors, cameras, photovoltaics, street lights, etc.

Lithium batteries are divided into two types: liquid lithium batteries and polymer lithium batteries, where the liquid lithium battery adopts a winding structure, and the polymer lithium battery comes in either split winding structure or stacking structure. Generally, a lithium battery has five parts: positive electrode, negative electrode, electrolyte, diaphragm, outer casing and electrode lead.

The coiled positive electrode film, the separator and the negative electrode film are sequentially placed and wound into a cylindrical shape or a flat cylindrical shape.