What are structures of lithium batteries?

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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