This BMS is designed for battery packs for the inverter, electric bicycles and the electric motorcycles It can be applied to
 lithium batteries with different chemical properties, such as lithium ion, Li-polymer. Lithium iron phosphate, etc. The protection
 board has strong loading capacity and the maximum continuous discharge current can reach 80A 100A 120A.
 
 ● 4~24 cell series protection
 ● Various protection functions for charging and discharging
 ● Discharge overcurrent, short circuit protection functional processes of hardware
 ● reserves the discharging control switch and the position of discharging temperature protection,
 ● Very low static current consumption
 ● Containing charging equalization function

Functions	Test items	specification			Unit
Functions	Test items	Min.	Type	Max.	Unit
Operating current	recharging current	-	-	100	A
Operating current	Discharging current	-	-	100	A
Charging protection	Charger voltage (CC-CV) lifepo4	Battery series *3.6			V
	Charger voltage (CC-CV) Li-ion	Battery series *4.2			V
	Over-charge protection voltage lifepo4	3.600	3.650	3.700	V
	Over-charge protection voltage Li-ion	4.220	4.250	4.280	V
	Over-charge protection delay time	500	1000	1500	mS
	Over-charge protection recovery voltage lifepo4	3.400	3.450	3.500	V
	Over-charge protection recovery voltage Li-ion	4.140	4.180	4.230	V
Discharge protection	Over-discharge protection voltage lifepo4	2.400	2.500	2.600	V
	Over-discharge protection voltage Li-ion	2.700	2.800	2.900	V
	Over-discharge protection delay time	50	100	200	V
	Over-discharge protection recovery voltage lifepo4	2.900	3.000	3.100	V
	Over-discharge protection recovery voltage Li-ion	2.800	2.900	3.000	V
	Over-discharge protection recovery condition	Disconnect load or Charging activation
Overcurrent protection	Charging overcurrent protection value	_	_	_	A
	Charging overcurrent delay	_	_	_	mS
	Charging release adjustment	_
	Discharge overcurrent 1 protection current value	320	360	400	A
	Discharge overcurrent 1 protection delay	50	100	200	mS
	Discharge overcurrent protection recovery condition	Disconnect load or Charging activation
Short circuit protection	Short circuit protection delay time	100	200	300	uS
Short circuit protection	Short circuit protection recovery	Disconnect load
Balanced function	Balanced turn-on voltage lifepo4	3.400	3.450	3.500	V
	Balanced turn-on voltage li-ion	4.170	4.190	4.220	V
	Balanced current	20		30	mA
Temperature protection(internally installed)	temperature protection value	_	75	_	℃
Temperature protection(internally installed)	temperature protection release value	_	53	_	℃
Internal resistance	Discharge loop internal resistance	_	10	20	mR
Self-consuming	Operating mode	_	20	50	uA
Working humidity	Normal operating range	-20	_	70	℃
Storage temperature	Humidity<90%, No condensation	-40	_	85	℃
Protection board size	LWH	15010216			mm

Protection function description
 Overcharge protection: When the battery is under the charging state, the voltage keeps going up. When the protection board detects that the voltage of any cell is higher than the overcharge protection value, the protection board will start timing immediately. When the time reaches the overcharge protection delay, the protection board will turn off the charging MOS tube, at that time, it cannot be charged.
 Overcharge protection recovery
After the overvoltage protection appears on the protection board, the battery voltage will going down under the static or discharge state of the battery. When the protection board detects that each voltage is lower than the recovery voltage of the overcharge protection, the protection board will output a signal and turn on the charging MOS tube to charge.
 Over-discharge protection
When the battery is under the discharge state, the voltage keeps going down. When the protection board detects that the voltage of any cell is lower than the overcharge protection value, the protection board will start timing immediately. When the time reaches the over discharge protection delay, the output signal of the protection board will turn off the discharge MOS tube, the load lock circuit will work, but, it cannot discharge at this time. Over discharge protection recovery: After the over discharge protection appears on the protection board, the battery voltage will going up under the static or discharge state of the battery. When the protection board detects that each voltage is higher than
 the recovery voltage of the over discharge protection. At this time, disconnect the load or charge, the protection board will output a signal and turn on the charging MOS tube to charge.
 Overcurrent protection
When the battery is under the static or discharge state, the current suddenly increases. When the protection board detects that the current reaches the overcurrent protection value, the protection board will start timing at that time. When the current duration in the circuit reaches the overcurrent protection delay time, the output signal of the protection board will turn off the discharge MOS tube, and the load lock circuit will work. At this time, the discharge cannot be conducted. 
 Overcurrent protection recovery
After the discharge overcurrent protection appears on the protection board, the discharge MOS tube is turned off, and the current in the loop becomes 0. At this time, the load is disconnected or charged, the output signal of the protection board will turn on the discharge MOS tube to discharge.
 
 

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