What is the principle of fast charging for lithium-ion battery chargers?

Do you know the principle of rapid charging of lithium-ion battery chargers? There are many types of lithium-ion battery chargers, the most widely used are lead-acid batteries and nickel-cadmium batteries. The charging and discharging principles of the two batteries are the same, and both positive and negative ions are generated through chemical reactions that generate current. Lithium-ion battery charger Lithium-ion battery charger produces oxygen during charging and discharging. In a sealed cell, the oxygen from these positive electrodes is absorbed by the negative electrode through the diaphragm and gas chamber, and the entire chemical reaction proceeds in the form of a cyclic reaction. In the case of a sealed battery, the internal pressure is limited, and the absorption rate of the negative electrode is also limited. If the charging voltage is too high, the oxygen appears at the positive electrode too quickly, and the absorption rate of the negative electrode cannot keep up with the oxygen appearing. After a long period of time, the battery will be dehydrated, causing the battery to fail a small amount of short vulcanization, thus damaging the battery. Good quality and short service life. At the same time, the polarization of the battery during high-speed charging will increase the internal pressure of the battery, increase the battery temperature, and increase the internal resistance, which will not only shorten the battery life, but also cause permanent damage to the battery. The principle of battery chemical reaction is the basis for the study of fast charging methods. On the one hand, fast charging should accelerate the chemical reaction of the battery to maximize the charging speed. On the other hand, the absorption capacity of the negative electrode must be ensured so that it can keep up with the rate of occurrence of positive oxygen while eliminating the positive oxygen as much as possible. Battery polarization. There are two ways to speed up the battery charger. One is to improve the battery structure, reduce its internal resistance, and increase the diffusion rate of reactive ions. The second is to improve the battery charging method. 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: Why is it so slow to charge the lithium-ion battery of a mobile phone with USB?