Analysis of charging methods for power lithium batteries

The safe working voltage range of power lithium battery is 2.8~4.2V, lower or higher than this voltage range, the lithium ions in the battery become very unstable, and even cause accidents. In order to ensure that the power lithium battery is in a safe range, a special charger is required. These chargers will automatically adjust the charging method according to the current state of the battery. ②Before activating the lithium battery charger to start charging, it will supply the battery with a small current, and test the battery voltage change at the same time, and gradually increase the current until the set value. This process can be regarded as a kind of activation or detection charging. ③The constant current transformer charging charger charges the lithium battery with a constant current. As the battery voltage rises, the charger increases the charging voltage at the same time to speed up the charging speed. ④Variable current and constant voltage charging When the battery reaches the 4.2V cut-off voltage, the battery will only charge about 70% (not full) at this time. At this time, the charger continues to charge the battery with a constant voltage and a gradually decreasing current. When the value is less than 0.1A, the battery is still charged and the battery voltage continues to rise before stopping the charging. ⑤The charging time of the power lithium battery is not as long as possible. For general chargers, the charging should be stopped immediately when the lithium battery overflows, otherwise the lithium battery will affect the battery performance due to heat or overheating. 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: What are the harms of lithium battery processing to the environment?