Introduction to the charging process of 18650 Li-ion battery

Some chargers are finished with cost-effective timetables, which are not accurate enough, and always cause abnormal battery charging and even damage the battery. Charging maintenance: When the charger overcharges the lithium positive-ion battery, in order to better prevent the internal working pressure from rising due to temperature rise, be sure to terminate the charging. Therefore, the maintenance of machinery and equipment must detect the operating voltage of the battery. When the battery overcharge working voltage is reached, start overcharge maintenance and intermittent charging. Over-current and short-circuit fault maintenance: When the charge and discharge current of the lithium positive-ion battery is too large or a short-circuit fault occurs, the maintenance of machinery and equipment will stimulate the use of over-current maintenance. Li-ion battery charging operation is divided into two stages. The first stage is constant current power charging. When the battery working voltage is less than 4.2V, the charger will charge with constant current power. The second stage is the constant current source charging link. When the battery working voltage reaches 4.2V, because of the characteristics of lithium-ion batteries, if the working voltage is higher, it will be destroyed. The charger fixes the working voltage at 4.2V, and the charging current is slowly reduced. When the amount of current decreases to a certain value (generally when the amount of current is set to 1/10), the charging power circuit will be blocked, the charging end indicator light will be on, and the charging end. Lithium-ion battery processing. Excessive charging and charging and discharging of customized lithium-ion battery will cause permanent damage to the positive and negative stages. Overcharge and discharge cause the structure of the negative electrode carbon sheet to collapse, and the collapse will cause the emergence of lithium positive ions that cannot be penetrated during the entire charging process. Overcharge causes too much lithium positive ions to be placed in the carbon structure of the negative electrode, and part of the lithium positive ions are not released. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What is the reason for the expansion of the lithium-ion battery pack