BMS with SMBus, I2C, RS485, RS232 Communication for 25.9V (7S) Battery Pack at 15A rate (#3012)

Protection Circuit Module Specifications  For 25.9V Li-ion/Li-Po  Battery  Pack
BQ76930+BQ78350
No.	Test  item (Test at normal temperature 25±2℃ and relative humidity≤90%)		Criterion
1	Communication Interface		SMBus or I2C
2	Capacity	Current supported battery capacity	20Ah
		Max supported capacity(Battery pack)	320Ah
		Min supported capacity(Battery pack)
		External capacity Indication	LCD,LED,SOC
		Gas gauge algorithm	CEDV
3	Voltage	Charging voltage	DC: 29.4V CC/CV（4.2V/1cell）
		Cell-balance detection voltage(Charge balance)	4.2V±0.03V
		Cell-balance release voltage	4.2V±0.025V
		Cell-balance detection delay time	0.96～1.4s
4	Current	Balance current for single cell	84mA±5mA
		Current consumption for single cell	≤20μA
		Normal operating-mode current (Gas Gauge IC)	650 uA (Average)
		SLEEP operating-mode current (Gas Gauge IC)	300 uA (Average)
		FULL SLEEP operating-mode current (Gas Gauge IC)	0.1 uA (Average)
		Maximal continuous charging current	5A
		Maximal continuous discharging current	15A
5	Over charge Protection	Over charge detection voltage	4.25±0.025V
		Over charge detection delay time	0.5S-2S
		Over charge release voltage	4.05±0.05V
6	Over discharge protection	Over discharge detection voltage	2.5±0.07V
		Over discharge detection delay time	10-30mS
		Over discharge release voltage	3.0±0.1V
7	Over current protection	Over current detection voltage	0.2±0.015V
		Over current detection current	80±5A
		Detection delay time	5ms-20ms
		Release condition	Cut load, auto recover
8	Short protection	Detection condition	Exterior short circuit
		Detection delay time	200-800us
		Release condition	Cut load, auto recover
9	Resistance	Protection  circuitry  (MOSFET)	≤40mΩ
10	Temperature	Operating Temperature Range	-40～+85℃
		Storage Temperature Range	-40～+125℃
11	Dimension	LxWxT	120x42x10
12	Notes	B+：Battery+ B-：Battery- SMBD：SMBus data line SMBC：SMBus clock line P+：Discharge+ P-：Discharge- CH+：Charge+ CH-：Charge-
13	Choice of RS485 or RS232	RS485 external board has Power comsumption of 10mA; RS232: Power comsuption is 3-4mA. Suggest to have power switch to shut off the circuit if battery is not in use.	The mainboard has SMBus port only. Need external board to support RS485 or RS232
Customer can not program the board, we will preset the board according to your battery's specification. What we need to know from customer?	1. Cell's manufacturer and module number 2. How many in series and parallel 3. What is the capacity of battery pack 4. Maximum continuous discharge current 5. Maximum surge discharge current 6. SMBus or RS485 or RS232

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Warning

• If you want to use this protection circuit board for a battery that is less than the rated drain, you must add additional protection device to protect the battery itself. Such as: proper rated polyswitch. 
• You must be professional in Lithium battery pack to buy the protection circuit board. Misusing may cause battery damage or explode. We are not responsible for any damage caused by user.