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16S 40A Lifepo4 48V Battery Management System BMS

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Contact name:Leo Zeng

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16S 40A Lifepo4 48V Battery Management System BMS

Country/Region	china
City & Province	changsha hunan

Product Details

Product: Deligreencs Lithium Battery Management 16S40A Lifepo4 BMS 48V Lithium Battery Charge Current 20A With Over Current Protection

(For 3.2V rated LiFePO4 battery pack only)

◆ We can design it for various lithium batteries like LiFepo4, LiMn2O4, and Li-polymer etc.

◆ The main functions are: over charge protection, over discharge protection, over current protection, short-circuit protection, etc.

◆ For Need the temperature protection function , Please contact us to add the temperature sensor.

◆ According to the customer request we can develop PCM in different sizes and structures.

◆ BMS manufactured by high quality Mos and IC imported . Keep your battery long cycle serivce life time.

Our Advantage

◆ Use top quality (A-level) protective integrated circuit IC, from the solution of Seiko of Japan. IC itself has power balancing function. The circuit is simple and reliable.

◆ Strong load ability, constant discharge current 100A 120A 200A 250A, , use high voltage resistance, low inner resistance power Mosfet. The heat sink will greatly help cooling.

◆ Typical voltage detection for each cell. So each battery will be prevented over charged or over discharged. Over current and short circuit protection function is very reliable.Long time short circuit of the load won’t affect the PCB and the battery.Temperature protection during charging and discharging.

◆ Extreme low power consumption. The consumption of the whole device is less than 50uA.

◆ PCB use high anti-corrosion, high water resistance, high impedance ESD conformal Coating.

Important Features of the BMS

Basic Specification of the bms

Datasheet for 3.2V LifePO4 BMS( 10A-60A )
	Content	Spec							Unit	Remark
	Content	10A	15A	20A	30A	40A	50A	60A	A
Discharge	Constant discharge current	10	15	20	30	40	50	60	A
Discharge	Over-discharge current protection	30±5	50±5	60±10	100±20	120±20	150±30	180±30	A
Charge	Charge voltage	Series No.* 3.65							V
	Charge current	5	8	10	15	20	25	30	A	Common port
	Charge current	8A as default							A	Separate port
Over charge protection	Overcharge volt	3.75±0.05							V
	Overcharge volt protect delay	1							S
	Over charge volt release	3.55±0.05							V
Power balancing	Power balance volt	3.5							V
	Balance release volt	3.5							V
	Balance current	30±5							mA
Over discharge protection	Over discharge detect volt	2.2±0.05							V
	Over discharge detect delay	1							S
	Over discharge volt release	2.7±0.05							V
Over current protection	Over current detect delay	1							MS
Over current protection	Over current protect release	Off load
Short circuit protection	Short circuit protection	External load short circuit
	Short circuit detect delay	250							uS
	Short circuit detect release	Disconnect load
Temperature protection	Temp protection	charge＜0℃, discharge＞70℃							℃	Need extra customization
Resistance	Main circuit resistor	≤20							mΩ
Self-consumption	Working current	≤100							uA
Self-consumption	Sleepy current(when battery is over discharged )	≤20							uA
Working temp	Temp range	-20~70							℃
Storage temp	Temp range	-40~80							℃

Wire speficication

Current	Wire	Square
10-15A	16AWG	1.3mm²
20A	14AWG	2mm²
30A	12AWG	3.4mm²
40A-60A	10AWG	5.3mm²
80A	8AWG	8.3mm²
100A	7AWG	12mm²
120A-150A	6AWG	16mm²
200A-250A	6AWG*2	16mm²*2
400A	2AWG*2	35mm²*2

Different wiring for common port and separate port

BMS wiring directions

First, Preparation before installation.

Make sure the batteries are of good consistency.The volt difference is no more than 0.05V,inner resistance is no more than 5mΩ,capacity difference lower than 30mAh. Connect the batteries in parallel first and then in series.the better performance of batteries consistency is, the higher performance of the BMS.

Second, wiring instructions.

Attention: please use our wires for our BMS.Don’t use other factories’ wires which can’t match with our BMS.

Step 1 B-(blue thick wire): Connect to battery pack total negative pole -

Step 2, Disconnect the wires for batteries from the BMS side.

Step 3,Connect the wires to batteries. Start from the thick black wire to total negative pole(B1-),then connect the 2^nd red thin wire to the 1^st battery positive pole(B1+)

B2+,B3+B4+......till the last red thick wire.

Step 4,Finishing all the wires to each batteries,don’t plug into the BMS directly. We suggest you use multimeter measure the voltage of two adjacent metal terminals(You can see the white connector with silver metal pins on the BMS).if the voltage is 3.0~4.2V(LiNCM),2.0~3.6V(LiFepo4), 1.5~2.75V(LTO),which means the wiring is correct.

Step 5,Ensure the wires are connected to batteries correctly, all voltage is normal, you can plug the wires into the BMS.

Step 6 P-: Connect P-(black thick wire) to load - and charger -

(if you ordered “common port”)

Charger+ connect to C-(yellow wire) load+ connect to P-(Black thick wire)

(if you ordered “separate port”)

Step 7 charger+ and load+ connect to battery +,please use thick wire

Third, Measure the total volt of the pack, and the output voltage of the BMS.if the voltage is the same,it means the wiring is correct.You can use the BMS now. Otherwise please check the wiring again according to the tips above.

How to test if the bms is good or not?

1. Make sure to use the attached detective wires of our bms.

Ensure volt-detect red wires are connected correctly.

2. Connect the wire to the battery pack,measure the voltage through the wire,it should be equal with the voltage of each cell.

If the votage is different,it means wrong wiring.

3. Make sure the voltage is same,plug the bms in.Make the multimeter point to Ω, measure the resistance between P- and B-. If the resistance is 0, then the BMS is good.