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Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2024-12-09 Hits: Popular:AG11 battery
Introduction to NiMH No. 7 battery processing methods and NiMH No. 7 battery processing prices
As a storage battery that has developed rapidly in recent years, the manufacturing and processing technology of lithium-ion batteries is still relatively mysterious to us. After all, the development time of lithium-ion batteries is not long compared with lead-acid batteries, and the upper limit of their development has not yet been reached.
Structure of lithium-ion batteries
The structure of lithium-ion batteries is divided into five parts, namely positive electrode, negative electrode, diaphragm, electrolyte and shell.
1. Positive electrode
In the overall constituent materials of lithium-ion batteries, positive electrode materials account for a large proportion, and the mass ratio of positive and negative electrode materials is 3:1~4:1. Because the performance of positive electrode materials directly affects the performance of lithium-ion batteries, their cost also directly determines the cost of batteries.
The important purpose of the diaphragm is to separate the positive and negative electrodes of the battery to prevent the two electrodes from contacting and short-circuiting. In addition, it also has the function of allowing electrolyte ions to pass through.
The main market-oriented diaphragm materials are polyolefin diaphragms mainly composed of polyethylene (PE) and polypropylene (PP). Among them, PE products are mainly made by wet process, and PP products are mainly made by dry process.
IV. Electrolyte
Lithium-ion battery electrolyte is the carrier of ion transmission in the battery. It is generally composed of lithium salt and organic solvent. The electrolyte plays the role of conducting ions between the positive and negative electrodes of lithium-ion batteries, which is the guarantee for lithium-ion batteries to obtain advantages such as high voltage and high specific energy.
Electrolyte is generally made of high-purity organic solvents, electrolyte lithium salts, necessary additives and other raw materials, prepared under certain conditions and in a certain proportion.
V. Shell
The shell of lithium-ion batteries includes hardware such as steel shell, aluminum shell, cover plate, pole ear, insulating tape, etc.
Lithium-ion battery production and processing process
The production and processing process of lithium-ion batteries is not very consistent for each manufacturer, but most of them are inseparable from these links, as follows
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