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Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
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:2024-04-01 Hits: Popular:AG11 battery
What is the production process of 18650 battery flat top?
What are the main production processes for lithium battery packs?
Mixing materials (positive and negative active materials + conductive agent + binder + dispersant), coating, rolling, slitting, welding and winding of tabs (or gaskets), sticking adhesive paper into the battery shell, welding and sealing, etc.; basically the entire The battery production processes in the industry are similar. The main difference is the difference in equipment or battery products. For example, soft-packed lithium battery packs generally have lamination, cylindrical winding, square winding and lamination coexist; resulting in the battery core being inconsistent during the winding process. The same; the most important and core technology is mixing and coating, as well as the final formation.
The production process of lithium battery packs is relatively complex. The main production process mainly covers the stirring and coating stage of electrode production, the winding and liquid injection stage of cell synthesis, and the packaging and testing stage of chemical packaging. The value ratio is about (35~40 %): (30~35)%: (30~35)%. According to Coating Online, the differences mainly come from different equipment suppliers, differences in the proportion of imported/domestic products, etc. The process flow is basically the same, and the value ratio is deviated but generally consistent with this ratio.
The lithium battery equipment corresponding to the front-end process of lithium battery pack production mainly includes vacuum mixers, coating machines, roller presses, etc.; the middle-stage process mainly includes die-cutting machines, winding machines, lamination machines, liquid injection machines, etc.; the back-end process includes Formation machines, volumetric testing equipment, process warehousing and logistics automation, etc. In addition, the production of battery packs also requires Pack automation equipment.
The production process flow of 18650 battery flat top:
Soft-packed lithium batteries use thermal packaging, while metal-cased batteries generally use welding (laser welding). The reason why soft-packed batteries can be thermally sealed is that they use aluminum-plastic packaging film.
The first step - preparation of electrode slurry
It mainly mixes electrode active materials, binders, solvents, etc. together, and then stirs and disperses them thoroughly to form a slurry;
The second step - coating
Apply the slurry prepared in the first step evenly to the current collector (aluminum foil or copper foil, etc.) with a specified thickness, and dry the solvent;
Step 3 - Pole piece punching
Cut the pole piece made in the previous step into the specified size and shape;
Step 4 - Lamination
Assemble the positive and negative electrode sheets and separator together, and after completing the glue application, form the electrode core;
Step 5 - Assemble the soft pack battery
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