What is a cylindrical lithium-ion battery? What are the advantages

Cylindrical lithium-ion batteries can also be called 18650 lithium-ion batteries. As the originator of lithium-ion batteries, the 18650 is a standard lithium-ion battery model designed by the Japanese company Sony at that time to save costs. The 18650 rechargeable battery that everyone often talks about is actually based on the rechargeable battery. The size is named, in 18650, 18 refers to the diameter of the lithium battery is 20mm, 65 refers to the length of 65mm, 0 refers to the length of 65mm, generally used in household rechargeable batteries is the fifth battery, it The model specification is 14500. The Chinese translation means a cylindrical rechargeable battery with a diameter of 14mm and a length of 50mm. In short, 18650 actually refers to the specifications of the rechargeable battery. According to the type of rechargeable battery, 18650 is generally divided into Lithium-ion batteries and lithium iron phosphate lithium-ion battery rechargeable batteries, the former is more widely used in the market, the latter is also more widely used. Research has found that the ternary lithium-ion battery has the advantages of high specific energy, good memoryless ability, and long life. The advantages of cylindrical lithium iron phosphate batteries: 1. The single unity is good; cylindrical lithium batteries have long had a series of internationally unified specifications and model specifications. The production process is relatively complete and perfect, and it is suitable for large-scale continuous production and processing. Second, the single itself has excellent engineering mechanical properties, the specific surface of the drum is large, the heat pipe radiator is excellent, and it can obtain higher bending strength; third, the key technology is perfect and sound, and the cost is low. The plastic shell of the storage battery has high compression resistance, and it is not easy to cause the expansion of the grid and the soft pack battery in the whole process of application. Fourth, the single energy consumption is low, and the probability of several safety accidents is low. Cylindrical rechargeable batteries are generally closed batteries, which have no maintenance problems during the entire application process, and are very prone to safety accidents during the entire application process. The rechargeable battery has no memory battery charging, and the battery may not be charged or discharged before the battery is charged. The application is more convenient; the internal resistance is small, and the irreversible volume is small, which can greatly reduce the energy consumption of the rechargeable battery itself and increase the number of battery cycles; The test data information shows that the ternary lithium-ion battery has a high safety factor and reliability, and is not easy to cause explosion and air pollution. The test data information shows that the positive and negative stages of the ternary lithium-ion battery are separated, so that the probability of common faults in short-circuit faults is reduced to the best in most situations. The lithium-ion battery protection board of the polymer cell can repair the ternary lithium-ion battery , On the one hand, it can prevent the rechargeable battery from overcharging or the switching power supply damage. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Which is safe for 18650 lithium ion battery or polymer lithium ion battery?