Five basic protection functions of lithium-ion batteries

The five basic protection functions of lithium-ion batteries. Lithium-ion batteries wholesale lithium-ion batteries have discharge overcurrent, short circuit protection, overcurrent 3A, and a delay of 0.2 seconds. Lithium-ion battery wholesale 1. Determine the overcurrent and discharge status: In the smart battery charge and discharge status, if the detected current exceeds 3A and the 0.2s delay is still greater than 3A, then overcurrent is determined. At this time, the protection execution circuit cuts off the discharge protection switch. The condition for removing the protection is to connect the charger. When the connected charger is detected, the over-current protection is removed, otherwise the smart battery will always be in the protection state. 2. Determine the conditions for overcharging and discharging: If the battery voltage exceeds 4.2v or the total voltage exceeds 16.8v during the battery charging process, it is determined that the battery is in an overcharged state. At this time, the protection execution circuit cuts off the charging protection switch. In the overcharge release state, the voltage of each battery is less than 4V. 3. Determine the overcharge protection failure: During the charging process, if the battery voltage exceeds 4.4v, it is determined that the charging protection function is abnormal. Start the secondary protection circuit and weld the three-terminal fuse. 4. Determine over-discharge and under-voltage and discharge conditions: In the process of discharging, when the voltage of a cell is less than 2.5v, it is determined that the battery is in the over-discharge state. At this time, the protection execution circuit will cut off the discharge switch to stop discharging. The release condition is that the voltage of all batteries is greater than 3V. 5. Determine over-temperature protection and release conditions: When the battery voltage temperature exceeds 55°C, confirm that the battery is in an over-temperature state. Hefei lithium-ion battery wholesale reminds you to cut off the charge and discharge protection switch in the protection circuit at this time. The release condition is that the battery temperature is lower than 50°C. 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: The recycling of lithium-ion batteries is still a problem