We understand from the literal meaning of 18650, the value of 18650 lithium battery is a lithium battery with a diameter of 18mm and a height of 65mm, and the value of 0 is cylindrical. A single is mainly composed of positive electrode, negative electrode, diaphragm, positive electrode and negative electrode collector, valve, overcurrent protection device, insulation and shell. As for the shell, there were many steel shells in the early days, but at this stage, aluminum shells are dominant. It can be divided into lithium cobalt oxide battery, lithium manganese oxide battery, and ternary materials. The 3 kinds of material system batteries have different advantages
The 18650 battery is more robust and stable in the international market, and its market share is also the technology leader of other lithium-ion battery products. It has been widely used in large, medium and small lithium battery industries such as consumer digital technology electronic equipment, mechanical equipment, and medical machinery, and has been widely used in power lithium battery industries such as service robots, AGV trucks, drones, and new energy vehicles. Smartphones, tablets, notebooks, electric toy cars, mobile phone headsets, mobile chargers, model airplanes, mobile phones, etc. all show strong development prospects.
1. The storage capacity is large. The storage capacity of common batteries is about 800mah, while the storage capacity of 18650 lithium batteries can reach 1200mah to 3600mah. If they are combined to form a 18650 lithium battery pack, then its storage capacity is Can exceed 5000mah.
2. Long service life. As you said before, the 18650 lithium battery can be recharged 1,000 times, so it can be used normally for more than 500 times, which is more than twice the service life of ordinary batteries.
3. High safety factor. 18650 battery has high safety performance. It is environmentally friendly, non-polluting, and non-toxic. At the same time, it can be used with confidence. It will not burn or explode like fake and inferior batteries. At the same time, its high temperature resistance is very good.
4. Good consistency, 18650 battery is the earliest, most mature and most stable lithium-ion battery, widely used in electronic products. Over the years, manufacturers have accumulated a lot of experience in the production process of 18650 batteries, making the consistency and safety of the produced 18650 batteries reach a very high level. In contrast, stacked lithium-ion batteries are far from mature, and the production technology of battery manufacturers cannot meet the conditions. Most of them are controlled by humans, and the consistency of batteries cannot reach the level of 18650 batteries. The 18650 battery has a small capacity and requires a lot of cells, but the consistency is very good; the capacity of the laminated battery can be made larger (20 Ah to 60 Ah), and the number of cells can be reduced, but the consistency is poor . In contrast, at this stage, it is difficult to invest a lot of manpower and material resources to improve the production process of laminated batteries together with battery suppliers. Therefore, new energy electric vehicles generally use 18650 batteries.