Cylindrical 3V lithium battery

Lithium ion power batteries usually have two types: cylindrical and rectangular. The cylindrical battery adopts spiral wound structure inside, and is made of a very fine and highly permeable polyethylene or polypropylene or polyethylene and polypropylene composite film isolation material separated between the positive and negative electrodes. The rectangle is formed by laminating, that is, placing a diaphragm on the positive electrode and then the negative electrode, and so on. It includes lithium ion collector composed of lithium containing materials (such as lithium cobalate, lithium manganate, one or several mixed uses of lithium nickel cobalt manganate, etc.) and current collector composed of aluminum film. The cathode consists of lithium ion collector made of layered carbon material and current collector made of copper film. The battery is filled with organic electrolyte solution. In addition, safety valve and PTC element are also installed to protect the battery from damage in case of abnormal state and output short circuit.