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 |
| 10A | 15A | 20A | 30A | 40A | 50A | 60A | A | |
| Discharge | Constant discharge current | 10 | 15 | 20 | 30 | 40 | 50 | 60 | A | |
| 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 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 | |
| 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 2nd red thin wire to the 1st 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.
Application
