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What are structures of lithium batteries?


Lithium battery usually has two types of cylindrical and square shapes. What are the structures?



1. The inside of the battery adopts a spiral wound structure, and is formed by spacing a positive and negative electrode with a very fine and highly permeable polyethylene film insulation material;



2. The positive electrode comprises a current collector composed of lithium cobaltate (or lithium nickel cobalt manganate, lithium manganate, lithium iron phosphate, etc.) and aluminum foil;



3. The negative electrode is composed of a current collecting electrode composed of a graphitized carbon material and a copper foil. The battery is filled with an organic electrolyte solution;



4, equipped with safety valve and PTC components (partial cylindrical use), so that the battery protects the battery from damage in an abnormal state and output short circuit;



5. The voltage of a single-cell lithium battery is 3.7V (3.2V for lithium iron phosphate positive electrode), and the battery capacity is not likely to be infinite.



Therefore, when lithium battery under processed, a single-cell lithium battery often serially and parallelly processed to meet the requirements of different occasions.



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