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Introducing the principle of 102450 battery assembly process
[102450 battery principle] Introducing the principle of 102450 battery assembly process 102450 battery
As we all know, the positive electrode material of lithium-ion batteries is lithium cobalt oxide, and the negative electrode is carbon.
The working principle of lithium-ion batteries refers to their charging and discharging principles. When the battery is charged, lithium ions are generated at the positive electrode of the battery, and the generated lithium ions move to the negative electrode through the electrolyte. The carbon as the negative electrode has a layered structure and has many micropores. The lithium ions that reach the negative electrode are embedded in the micropores of the carbon layer. The more lithium ions are embedded, the higher the charging capacity.
Similarly, when the battery is discharged (that is, the process of using the battery), the lithium ions embedded in the carbon layer of the negative electrode come out and move back to the positive electrode. The more times the lithium ions return to the positive electrode, the higher the discharge capacity. What we generally call battery capacity refers to the discharge capacity.
It is not difficult to see that in the charging and discharging process of lithium-ion batteries, lithium ions are in a state of movement from the positive electrode to the negative electrode to the positive electrode. If we compare lithium-ion batteries with rocking chairs, the two ends of the rocking chair are the two poles of the battery, and lithium ions are like an excellent athlete, running back and forth at the two ends of the rocking chair. Therefore, experts gave lithium-ion batteries a cute name rocking chair batteries.
Introduction to the working principle of lithium batteries Assembly process of lithium batteries
Introduction to the working principle of lithium batteries Assembly process of lithium batteries
Working principle and assembly process of lithium batteries
Tools/raw materials
Cathode materials
Anode materials
Separator paper
Steps/methods
1? Pulping:
Mix the powdered positive electrode active material and negative electrode active material with special solvents and adhesives, and stir at high speed to form a slurry of positive and negative electrode materials.
2? Coating:
The prepared slurry is evenly coated on the surface of the metal foil and dried to prepare the positive and negative electrode sheets separately.
3? Assembly:
According to the positive electrode sheet-separator-negative electrode sheet-the separator is placed from top to bottom in sequence, and the battery core is wound, and then the process of injecting electrolyte is completed, that is, the assembly process of the battery is completed. Enter the finished battery.
4?Enter:
Use a dedicated battery charging and discharging device to perform charge and discharge tests on the finished battery, test each battery, and filter out qualified finished batteries to be shipped.
Precautions
The process technology of lithium-ion batteries is very strict and complicated, so here is a brief introduction!
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