7s 20A PCM BMS for 24V 25.2V 25.9V Li-ion/Lithium/ Li-Polymer 21V 22.4V LiFePO4 Battery Pack with Hdq or I2c Communication Protocol (PCM-L07S20-F50)

Product name:Protection Circuit Module
Model No:PCM-L07S20-F50
For 7S Lithium-ion/Lithium Polymer/LiFePO4 Battery Packs
Product Feature:
1. Suitable for 7 section Lithium-ion/Lithium Polymer/LiFePO4 Battery Packs;
2. Connect the special upper computer software to display the total voltage, battery voltage, capacity, current, temperature, cycle times and other parameters;
3. Support HDQ or I2C communication protocol;
4. The metering IC adopts TI BQ34Z100 series, which can read voltage, capacity, current, temperature, cycle times and other parameters;
5. Over charge, over discharge, short circuit, over current, temperature protection, etc.;
6. The maximum continuous working current is 20A, and the charge and discharge are at the same port;
7. Secondary current/voltage protection;
8.MOSFET protection control positive pole;

Protection Circuit Module Specifications  For 25.9V Li-ion/Li-Po  Battery  Pack
No	Test   item (Test at normal temperature 25±2ºC and relative humidity≤90%)		Criterion
1	Communication Interface		HDQ or I2C
2	Capacity	Designing battery capacity(PCM)	20Ah
		Max capacity(Battery pack)	290000mAh
		Min capacity(Battery pack)	100mAh
		External capacity Indication	LED
		Gas gauge algorithm	Impedance Track
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	84±5mA
		Normal operating-mode current (Gas Gauge IC)	160 uA
		SLEEP operating-mode current (Gas Gauge IC)	80 uA
		FULL SLEEP operating-mode current (Gas Gauge IC)	25 uA
		Maximal continuous charging current	20A
		Maximal continuous discharging current	20A
5	Over charge Protection	Over charge detection voltage	4.25±0.025V
		Over charge release voltage	4.05±0.05V
		Over charge detection delay time	10~200mS(can adjust)
6	Over discharge protection	Over discharge detection voltage	2.5±0.07V
		Over discharge release voltage	3.3±0.1V
		Over discharge detection delay time	0.5~2S(can adjust)
7	Over current protection	Over current detection voltage	0.2±0.015V
		Over current detection current	50±10A(can adjust)
		Detection delay time	5~60mS(can adjust)
		Release condition	Cut load ,
8	Short protection	Detection condition	Exterior short circuit
		Detection delay time	200-800us
		Release condition	Cut load ,
9	Resistance	Protection  circuitry  (MOSFET)	≤50mΩ
10	Temperature	Operating Temperature Range	-40~+85ºC
		Storage Temperature Range	-40~+125ºC
Dimension		L115*W115*T10mm
B+:Battery+
B-:Battery-
SDA:Serial Data interface
SCL:Serial Clock interface
HDQ:Open drain HDQ Serial communication line (slave)
P+:Charge+/discharge+
P-:Charge-/discharge