BMS/PCM (Battery Management System), buy 4s5a PCM/BMS/PCB for 4s/12.8V LiFePO4 Battery Pack on China Suppliers Mobile

Product Details

4s5a PCM/BMS/PCB for 4s/12.8V LiFePO4 Battery Pack

BMS For 4S /12.8V LiFePO4 Battery Pack
Model:OSN-4S0505-BMS
No.	Test item		Criterion
1	Voltage	Charging voltage	DC:14.4V 3.6V/Cell
2	Current	Current consumption for single cell	≤50μA
		Maximal continuous Charging current	5A
		Maximal continuous Discharging current	5A
3	Over charge Protection	Over charge detection voltage	3.90+0.025V
		Over charge detection delay time	0.5—1.5S
		Over charge release voltage	3.80+0.05V
4	Over discharge protection	Over discharge detection voltage	2.30+0.08V
		Over discharge detection delay time	50-150mS
		Over discharge release voltage	2.70+0.1V
5	Over current protection	Over current detection voltage	0.3+0.025V
		Over current detection current	10+2A
		Detection delay time	5ms—15mS
		Release condition	Cut load, Automatic Recovery
6	Short protection	Detection condition	Exterior short circuit
		Detection delay time	200-500us
		Release condition	Cut load, Automatic Recovery
7	Resistance	Protection circuitry (MOSFET)	≤60mΩ
8	Temperature	Operating Temperature Range	-40~+85°C
8	Temperature	Storage Temperature Range	-40~+125°C
9	Size		50*16mm

Main Functions:

The product has 6 main functions: over charge, over discharge, over current, short circuits, balancing and low-current lock.

1. Function of over charge protection: once voltage of any battery in the pack gets higher than the over charge protection point, charge cuts off to ensure all batteries work within the over charge protection point.

2. Function of over discharge: once voltage of any battery in the pack gets lower than the over charge protection point, discharge cuts off to ensure all batteries work beyond the over charge protection point.

3. Function of over current: during the discharge process of battery pack, once discharge current gets over the set over current protection point, output cuts off to ensure battery pack works within the safe limit of current.

4. Function of short circuit protection: once battery pack’s output port appears the condition of short circuit, it cuts off to ensure battery group not to be damaged because of short circuit.

5. Function of voltage balancing: in the late charging period of battery pack, voltage difference that appears during the using process of each battery could get balancing revised to ensure battery pack’s capacitance.

6. Function of low-current lock: series connection of low-current lock gets reserved and low current controls on-and-off of the main high current to make it safer and more convenient.