bảng mạch bảo vệ pin lithium 20A cho máy hút bụi lifepo4 2S 7.4V sự bảo vệ

Giới thiệu bảng mạch bảo vệ pin lithium 20A cho máy hút bụi lifepo4 2S 7.4V sự bảo vệ

2S 7.4V 20A Lifepo4 Lithium Battery Protection Board for Vacuum Cleaner Power Tools Solar Street Lamp Protection
This board is 2S 7.4V general 20A working current, both iron-lithium 3.2V and ternary 3.7V
Single cell overcharge detection voltage: 4.28V±0.025V
Overcharge detection delay time: 200ms (MAX)
Single cell overcharge release voltage: 4.18V±0.05V
Cell balance detection voltage: none
Cell balance release voltage: None
Cell balance current: None
Single cell overdischarge detection voltage: 2.25V±0.05V
Overdischarge detection delay time: 144ms (MAX)
Single cell overdischarge release voltage: 2.95V±0.05V
Discharge overcurrent protection current: 40±5A (adjustable)

Detection delay time: MAX: 9ms
Protection release condition: disconnect the load
Protection condition: short circuit of external circuit
Detection delay time: 400us~600 us
Protection release condition: disconnect the short circuit
On-state resistance of the main circuit: B- to P-: RDS≤6mΩ
Internal consumption of the circuit when working: ≤50μA
The highest withstand voltage of charging MOS-the highest voltage with which the charging port is connected to the charger: DC 9V
The highest chip withstand voltage-input voltage between each string of battery nodes VDD-VSS: DC 8V
Continuous discharge current: continuous discharge current 20A (adjustable)
Continuous charging current: continuous charging current 20A (adjustable)
Main line welding instructions:
B+: Connect the positive electrode of the battery pack
B-: Connect the negative pole of the battery pack
BM: Connect to the common end of the battery pack
P+: Input and output positive
P-: Input and output negative
Purchase Notes:
1. The difference between the split port and the same port: the split port defaults to 5A charging current, and the positive and negative poles of charging and discharging must be separated; the charging current of the same port is the same as the discharge current, and the charging and discharging are at the same positive and negative level.
2. Without equalization and with equalization: Equalization is to discharge the high-voltage batteries with resistors during charging, and wait for the low-voltage batteries to charge up the voltage to achieve the same voltage and voltage, and improve the performance of the entire battery.
3. Before installing the protection board, the batteries must be well matched (the voltage difference of each battery is not more than 0.05V, the internal resistance difference is not more than 5mΩ, and the capacity difference is less than 30mAh). The better the battery consistency, the farther the distance can be run. The protection board has the best performance.
4. The batteries should be connected in parallel and then connected in series, and ensure the welding is correct (18650 batteries are spot-welded with nickel plates, and other batteries are welded with solder). Never use screws, as it is easy to burn out the IC of the protection board.
5. Please note or leave a message from