Do you know what are the functional requirements of cascade lithium iron phosphate batteries?

The cascaded lithium iron phosphate battery should have a sleep function. During transportation, storage or offline, the battery pack BMS should be completely disconnected; when the battery pack is transferred from the online state to the offline state, the BMS should have a screening function. And the battery pack status automatically goes to sleep. When the battery pack changes from offline state to online state, BMS should be able to distinguish and automatically activate, and adjust the working state according to the power and battery pack status. 2. Electric heating function. When the stepped lithium iron phosphate battery is used in scenes of -5°C and below, a direct current heating device should be configured (the temperature needs to be controlled and adjusted according to the actual situation), and the lithium ion battery pack should have a special heat dissipation design. To ensure that the heating is even and the equipment works normally. 3. Charging current-limiting management function The cascade lithium iron phosphate battery should have an autonomous current-limiting charging function to ensure that the battery pack can be charged normally when the voltage is input within the working range. The charging current limit value should be set between 0.1C3 (A) ~ 0.2C3 (A), the default value is 0.2C3 (A). 4. The total charging voltage is too high. The cascade lithium iron phosphate battery should have a high total charging voltage protection function. When the charging reaches the total voltage alarm point, it will alarm and protect when it reaches the protection point. It is used to cut off, and when the total voltage drops to recovery. Resume charging at the point. 5. The total discharge voltage is too low protection. The cascade lithium iron phosphate battery shall have the protection function of the total discharge voltage is too low. When the discharge reaches the low total voltage alarm point, the discharge circuit should be cut off and an alarm should be given. After a period of time, the battery pack should enter the sleep mode. 6. The discharge cell voltage is too low protection. The cascade battery should have a cell voltage under-voltage protection function during discharge. It will alarm when the cell voltage alarm point is discharged, and protect when it reaches the protection point. It is used to cut off, and the battery should enter after a period of time. Sleep mode. 7. The discharge overcurrent management cascade battery should have the output overcurrent protection function to be set according to the user, and the circuit should be cut off and alarm during the protection period. 8. Battery high temperature protection function. The cascade lithium iron phosphate battery itself should have battery high temperature protection function. When the battery temperature reaches the alarm point, it will warn; when it reaches the protection point, it will be protected and used to cut off; the temperature will automatically recover when the temperature drops to a certain value. 9. Battery low-temperature protection function The cascade lithium iron phosphate battery itself should have the battery low-temperature protection function. When the battery temperature reaches the alarm point, it will warn; when it reaches the protection point, it will be protected and used to cut off; the temperature will automatically recover after the temperature rises to a certain value. 10. Calculation of State of Charge (SOC) of battery pack. Cascade batteries should have dynamic charge calculation function, and the error between the calculated value and the actual battery capacity should be no more than 5%. 11. Output short circuit protection. When the positive and negative electrodes of the cascade lithium iron phosphate battery are directly short-circuited, the circuit should be automatically cut off and an alarm should be instantaneously. The BMS and the battery should not be damaged (including no ignition, deformation, leakage, smoke, or fire. Or explosion); After troubleshooting, it should be able to resume work manually or automatically. 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 article: What is the capacity of the 18650 lithium ion battery?