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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
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source:Industry News release time:2025-02-27 Hits: Popular:AG11 battery
The production process of cylindrical lithium - ion batteries is a complex and highly - controlled series of operations, aiming to create high - performance energy storage devices.
It commences with the preparation of electrode materials. For the positive electrode, lithium - containing compounds like lithium cobalt oxide, lithium iron phosphate, or lithium nickel - cobalt - manganese oxide are mixed with conductive agents and binders. This mixture is then coated onto a thin aluminum foil, which serves as the current collector. The coating thickness and uniformity are strictly monitored as they significantly impact battery performance. Similarly, for the negative electrode, graphite or other anode materials are mixed with binders and coated onto a copper foil current collector.
After electrode preparation, the electrodes are dried to remove any residual solvents. Then, they are calendared to compress the active materials, enhancing their density and electrical conductivity. Next is the winding or stacking process. In the case of cylindrical batteries, the positive and negative electrodes, along with a separator (usually a porous polymer film to prevent short - circuits between the electrodes), are precisely wound around a central mandrel. This requires high - precision machinery to ensure consistent winding tension and alignment.
The wound electrode assembly is then inserted into a cylindrical metal casing, typically made of aluminum or steel. The casing is sealed, and an electrolyte solution, which contains lithium salts dissolved in organic solvents, is injected into the cell. This electrolyte enables the movement of lithium ions between the positive and negative electrodes during charging and discharging. Finally, the battery undergoes an initial activation process, also known as formation, where it is charged and discharged several times to stabilize the electrode - electrolyte interface and optimize battery performance.
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