Teach you how to repair 18650 lithium battery

Teach you how to repair 18650 lithium battery. The theory of battery life is 1000 times. The density of the unit capacity is very large, so most of the laptop batteries, in addition, the safety function is very good in 18650, and it is widely used in various major electronic categories: commonly used in advanced light flashlights, portable electric, wireless data transmission, electrical thermal clothing , Shoes and portable instruments, portable lighting, portable printers, industrial equipment, medical equipment, etc. 18650 means 18 mm in diameter and 65 mm in length. The number of type 5 batteries is 14,500 pieces, 14 mm in diameter and 50 mm in length. Generally speaking, 18650 batteries are mostly used in industry and less in civilian use. Ordinary batteries are mostly used for laptop batteries and advanced flashlights. 18650 is just the size of the battery type. According to the battery type, it can be divided into lithium ion 18650, lithium iron phosphate 18650, nickel hydride 18650 (very rare), and ordinary lithium ion 18650. The principle of charge and discharge The working principle of lithium batteries is charging and discharging. When the battery is charged, lithium ions are formed at the positive electrode of the battery, and the lithium ions reach the negative electrode through the electrolyte. Carbon, that is, the negative electrode, has a layered structure with many micropores, and the lithium ions reaching the negative electrode are embedded in the micropores of the carbon layer. The more lithium ions are inserted, the greater the charging capacity. Similarly, when the battery is discharged (the process we use the battery), the lithium ions embedded in the carbon of the negative electrode will come out and return to the positive electrode. The more lithium ions return to the positive electrode, the greater the discharge capacity. The battery capacity we usually call refers to the discharge capacity. In 18650 lithium batteries, it is not difficult to see that during the charging and discharging process of lithium batteries, lithium ions are in a state of movement from positive to negative to positive. If we compare the lithium battery to a rocking chair, the two ends of the rocking chair are the two poles of the battery, and the lithium ion is like an excellent athlete, moving back and forth on both ends of the rocking chair. Therefore, the experts gave the lithium battery a lovely name: rocking chair battery. 18650 lithium battery calibration principle: principle of the lithium battery calibration method 1: the metal surface of the lithium battery will be oxidized to a certain degree for a long time, resulting in poor contact between the mobile phone battery and the mobile phone. Eraser or other cleaning tools can wipe the rusty surface material, so that the battery and the mobile phone can be better connected. The second principle of the lithium battery correction method: low temperature can change the attack of the lithium battery electrolyte and promote the chemical reaction after the battery attack. The application process of lithium batteries is actually a charge and discharge process. During this period, the negative and positive charges in the battery collide with each other. Batteries are becoming more and more useless, because the internal kinetic energy of electrons is relatively large at normal room temperature, so the battery is in a reactive state and leaks more frequently. However, when the lithium battery is placed in a low temperature environment, the lithium battery electrolyte on the microstructure surface of the lithium film, as well as their interface surface, will change significantly, resulting in the temporary activity of the battery and the reduction of leakage current. So after charging, the waiting time of the phone will increase. The cycle life of lithium batteries is about 600 times. If the number of charges is too large, the thermal motion of the molecules will gradually destroy the microstructure of the internal molecular arrangement, and the power to store the charges will gradually decrease. However, the freezing process often destroys the original internal structure of the battery, which may increase the ability to charge in a short time, but it may not be beneficial for long-term use. Once the microstructure of the lithium battery is destroyed, it is impossible to fully recover. Long-term use of this method will accelerate the loss of the mobile phone battery. 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 article: What are the importance of fast charging technology for lithium batteries?