Structure of lithium ion power battery
Release time：
2022-12-05
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 pole and then the negative pole, and so on.
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 pole and then the negative pole, 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, valves and PTC elements are also installed to protect the battery from damage in case of abnormal state and output short circuit.
The voltage of a single lithium battery is 3.6V, and the capacity cannot always be large. Therefore, single lithium batteries are often used in series and parallel to form a battery pack to meet the requirements of different occasions.
1. Restrain battery polarization, reduce thermal effect and improve magnification performance;
2. The internal resistance of the battery is reduced, and the increase of dynamic internal resistance during the cycle is significantly reduced;
3. Improve the consistency and increase the cycle life of the battery;
4. Improve the adhesion between the active substance and the collector, and reduce the manufacturing cost of the pole piece;
5. Protect the collector from electrolyte corrosion;
6. Improve the processing performance of lithium iron phosphate and lithium titanate materials.
Related news
Mobile website
Hefei Jingyi Intelligent Technology Co., Ltd
Tel.: +86-13631678300
Email: 261525425@qq.com
Address: Factory of Hefei Huajun Auto Parts Co., Ltd., Jianghuai Auto Parts Industrial Park, Gangji Town, Changfeng County, Hefei, Anhui
Copyright © 2022 Hefei Jingyi Intelligent Technology Co., Ltd
