1. Overcharge protection function:
The overcharge protection function prohibits the charger from continuing to charge when a certain voltage is reached. That is, the MOS tube that controls the overcharge is brought into an off state, and charging is stopped.
2. Over-discharge protection function:
The overdischarge protection function stops discharging the load when the battery voltage becomes low. The MOS tube that controls the over-discharge is put into the off state, and is prohibited from discharging. This process is exactly the opposite of the action when overcharge detection.
3. Overcurrent protection function:
The overcurrent protection function stops the discharge of the load when a large current is consumed. The purpose of this function is to protect the battery and the MOS tube and ensure the safety of the battery under working conditions. After the overcurrent detection, the lithium battery will return to the normal state after being separated from the load, and can be recharged or discharged.