5S 50A 21V BMS 18650 lithium Li-ion battery protection board With Balance CELLS for LiPO Polymer 5 CELL

Description

The lithium battery protection board adopts a highly integrated intelligent lithium battery protection board integrated chip, and the performance is superior to the protection board composed of discrete chips. Can complete 5 string polymer lithium battery, ternary lithium battery, lithium iron phosphate, lithium cobalt oxide, lithium manganese oxide battery charge and discharge protection, over current, short circuit, over temperature protection and equalization function. It adopts 4 milliohm ultra-low internal resistance MOS tube, which has low internal resistance and high efficiency. It is suitable for battery pack applications in different fields such as inverters, DC motors, power tools, and solar street lights. It is common to the same port and different port, and has strong applicability. The protection board has a heat sink and connecting wire. Features: Single cell Overcharge Protection Voltage: 4.25V ±0.025V Single cell Overcharge Relieved Voltage: 4.15V ±0.05V Overcharge Protection Delay: 1S ±200mS Single cell Over-discharge Protection Voltage: 2.7V ±0.05V Single cell Over-discharge Relieved Voltage: 3.0V ±0.1V Over-discharge Protection Delay: 1S ±200mS Discharge Over current Protection: 70A Discharge Over current Protection Delay: 100mS ±50mS Short circuit Protection: Yes Short circuit Protection Delay: 250uS ±50uS Short circuit Protection Recovery Mode: Disconnect the load recovery output voltage Discharge Current: 50A (When more than 20A, please add tin on the back of the PCB to increase the current pass capability.) Charging Current: 50A (When more than 20A, please add tin on the back of the PCB to increase the current pass capability.) Balance Function: Yes Balance Turn-on Voltage: 4.18V ±0.025V Balance Current: 55mA Power Failure Protection: Yes Temperature Protection: Yes (valid when external 10K ohm NTC resistor is connected) Charge Low Temperature Protection: -7℃ Charge High Temperature Protection: 50℃ Discharge Low Temperature Protection: 70℃ Module Size：72mm x 30mm x 6mm Notes: 1. Choose a suitable protection board according to the actual battery type and serial connection. Protection boards with different serial numbers cannot be used universally. The protection board can change the battery serial number through jumpers. For details, please refer to the parameter setting description diagram. 2. Before installing the protection board, the batteries should be paired correctly, and the old and new batteries cannot be mixed. 3. Unplug the cables before wiring, then connect all the cables, and then confirm the wiring is correct before plugging in the cables. When wiring, the control wiring diagram is gradually connected from the negative pole of the battery. For thick wires, please select a suitable square wire according to the current load value. 4 When the working current is too large, add tin on the front and back of the protection board, or thicken the copper wire to increase the overcurrent capacity of the circuit board. Otherwise, due to the excessive current, the copper skin on the circuit board will be guided by the current. Skin or burns. 5. Temperature protection function is needed, and 10K NTC resistance needs to be added (see instructions). The factory default setting is not a temperature protection resistor. 6. The protection table has an optional over current protection secondary delay. If the instantaneous starting current of the load is very large and leads to inappropriate protection, the secondary delay of the over current protection can be selected to reduce the occurrence of false protection.