Introduction and classification of lithium batteries
A lithium battery is a type of battery that uses a lithium metal or a lithium alloy as a plate material and uses a non-aqueous electrolyte solution. Because of the very active chemical properties of lithium metal, lithium metal is difficult to process and store. The cost of production is relatively high, so lithium batteries have not been widely used for a long time. Until recent years, with the continuous maturation and commercial scale production of lithium-ion compound and lithium battery separator technology, the cost has been greatly reduced due to light weight, large capacity, long life and lack of pollution. Lithium batteries will gradually replace lead-acid batteries and will become the main products. Power tools, electric bicycles, electric motorcycles, electric vehicles, military equipment, aviation and various mobile power supplies, mobile phone power supplies, various emergency lights, flashlights, razors, cameras, cameras, photovoltaics. Street lamps and so on.
Lithium batteries are divided into two types: liquid lithium batteries, a lithium battery, a polymer lithium battery in which a lithium battery adopts a winding structure and has two types of a polymer lithium battery. The structure of lithium batteries is divided into two categories: split winding and stacked. The lithium battery structure then consists essentially of five large blocks: positive electrode, negative electrode, electrolyte, diaphragm, outer housing, and electrode cable.
The wound positive electrode film, separator and negative electrode film are placed sequentially and wound into a cylindrical shape or a flat cylindrical shape and are mainly represented by SANYO, TOSHIBA, SONY and ATL. The stacked type is stacked in multiple layers such as a positive electrode, a separator, a negative electrode, a separator and a positive electrode. All positive electrodes are welded together and the negative electrodes are welded together, mainly represented by ATL.
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