18650 is a type of lithium-ion battery, the common 18650 battery is also divided into lithium-ion batteries and lithium iron phosphate batteries, 18650 in 18 refers to the diameter of the lithium-ion battery is 18mm, 65 indicates the length value of 65mm, 0 indicates that it belongs to the cylindrical battery. Capacity is 31.5ah and voltage is 3.6v. It is a very cost-effective battery.

The ball mill is a critical piece of equipment in the lithium battery manufacturing process, used to mix and grind various raw materials to achieve the desired particle size and homogeneity for the battery's anode or cathode material.

In the manufacturing process of lithium-ion batteries, there are three very key items that must be strictly controlled: first, dust; Second, metal particles; The third is water. Dust and metal particles are not well controlled, which will directly lead to internal short circuit of the battery, fire and burning safety accidents; If the moisture is not effectively controlled, it will also cause greater harm to the battery performance and lead to serious quality accidents! Therefore, for the control of the water content of the main materials such as electrode sheets, separators, and electrolytes in the process, it is very critical, and there can be no relaxation. The following is detailed from three aspects: the harm of water to lithium batteries, the source of water in the process, and the control of water in the process.