Do you know the principle of lithium battery protection board?

Detailed analysis of the principle of lithium battery protection board. In the normal situation of the protection board, Vdd is high, Vss, VM are low, DO and CO are high. When any parameter of Vdd, Vss, VM is changed, The level of the DO or CO terminal will change. 1. Overcharge detection voltage: Under normal conditions, Vdd gradually increases to the voltage between VDD and VSS when the CO terminal changes from high level to low level. 2. Overcharge release voltage: In the charging state, Vdd gradually decreases to the voltage between VDD and VSS when the CO terminal changes from low level to high level. 3. Overdischarge detection voltage: Under normal conditions, Vdd gradually decreases to the voltage between VDD and VSS when the DO terminal changes from high level to low level. 4. Overdischarge release voltage: In the overdischarge state, Vdd gradually rises to the voltage between VDD and VSS when the DO terminal changes from low level to high level. 5. Overcurrent 1 detection voltage: In the normal state, VM gradually rises to the voltage between VM and VSS when DO changes from high level to low level. 6. Overcurrent 2 detection voltage: In the normal state, VM rises from OV to the voltage between VM and VSS when the DO terminal changes from high to low at a speed of 1ms or more and 4ms or less. 7. Battery load short-circuit detection voltage: Under normal conditions, VM starts from OV and rises to the voltage between VM and VSS when the DO terminal changes from high to low at a speed of 1μS or more and 50μS or less. 8. Charger detection voltage: In the over-discharge state, VM gradually decreases with OV to the voltage between VM and VSS when DO changes from low level to high level. 9. Current consumption during normal operation: Under normal conditions, the current flowing through the VDD terminal (IDD) is the current consumption during normal operation. 10. Over-discharge current consumption: In the discharge state, the current (IDD) flowing through the VDD terminal is the over-current discharge current consumption. 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.