Analysis of lithium battery protection board

The professional name of lithium battery protection board in the industry is BMS, which is battery management system. This protection board is complicated and simple. The complexity is for the use of large battery packs, such as the battery protection system for new energy vehicles, the backup power pack management system in the server room, etc.; the simple one is for small battery packs, such as small UPS power supply, small robots, smart batteries for drones, etc. Let's take the 3S12V25A18650 lithium battery protection board as an example to tell some small knowledge about the lithium battery protection board. Parameters: 1. Overcharge voltage range: 4.25-4.35v+0.05v, 2. Overdischarge voltage range: 2.3-2.7v+0.05v, 3. Working current: 025A, 4. Working temperature: -40+50℃, 5. Instantaneous current: 3540A, 6. Storage conditions: -40+80℃, 7. Quiescent current: less than 30uA, 8. Balance current: about 4050mA, 9. Effective life: more than 30,000 hours. This is 3S12V25A18650 lithium battery protection board 11.1V12.6V high current, with balance circuit overcharge, overdischarge, overcurrent and short circuit protection. The charging and discharging of the protection board are the same ports, and the protection board includes a balance circuit. When the charge is balanced, the circuit board will have a bit of temperature, even after the charger is disconnected, some are still in a balanced state, and will continue to keep warm for a period of time until it reaches the balance disconnection threshold. The protection board cannot be used for the protection of iron-lithium polymer batteries, electric finishing machines, electric bicycle batteries, starting batteries for automobiles and motorcycles. The lithium battery protection board is suitable for the following products (within the rated power range): electric drill, 775 motor (6A-10A), low-power inverter, low-power vacuum massager battery, LED light, 12V backup power electronics, 12V120W car wash pump , Batteries, solar street lamp monitoring backup power supply and other products. The rated current cannot exceed 25A, and it cannot exceed 50A every 0.5 seconds. Lithium battery protection board specifications: 1. Overcharge voltage range: 4.25-4.35v+0.05v, 2. Overdischarge voltage range: 2.3-2.7v+0.05v, 3. Working current: 025A, 4. Working temperature: -40 +50℃, 5. Instantaneous current: 3540A, 6. Storage conditions: -40+80℃, 7. Quiescent current: less than 30uA, 8. Balance current: about 4050mA, 9. Effective life: more than 30,000 hours, within 10 minutes Resistance: less than 100m ohm, 11. Short circuit protection: protection, delayed self-recovery, 12. Size: 56x45x4mm. 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 article: How does graphite play a role in lithium batteries?