Is the charging current of the lithium battery related to the charging speed?

Lithium battery charging requirements: According to its structural characteristics, the maximum end-of-charge voltage should be 4.2V, and it cannot be overcharged. Otherwise, too much lithium ions in the positive electrode will be taken away, and the battery will be scrapped and unusable. The charging and discharging requirements are relatively high, and a dedicated constant current and constant voltage charger can be used for charging. Normally, the constant current charge to 4.2V/cell and then the constant voltage charge. When the constant voltage charge current drops to less than 100mA, the charging should be stopped. Discharge of lithium battery: Due to the internal structure of the battery, all lithium ions cannot move to the positive electrode during discharge, and some lithium ions must be retained in the negative electrode to ensure that lithium ions can be inserted into the channel smoothly during the next charge. Otherwise, the battery life will be shortened accordingly. In order to ensure that some lithium ions remain in the graphite layer after discharge, it is necessary to strictly limit the minimum discharge termination voltage, which means that the power lithium battery cannot be over-discharged. The charging method of lithium battery is limited voltage and constant current, which is controlled by the IC chip. The typical charging method is: first test the voltage of the battery to be charged, if the voltage is lower than 3V, pre-charge first, and the charging current is set 1/10 of the current, after the voltage rises to 3V, it enters the standard charging process. The standard charging process is: constant current charging with the set current, when the battery voltage rises to 4.20V, change to constant voltage charging and keep the charging voltage at 4.20V. At this time, the charging current gradually decreases, and when the current drops to 1/10 of the set charging current, charging ends. Regarding the charging of lithium batteries, within a certain current range (1.5C-0.5C), increasing the constant current value of the constant current and constant voltage charging method does not shorten the time to fully charge the lithium battery. 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.