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Product Details:
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| Application: | 16S LifePO4 Battery Pack | Norminal Voltage: | 48V |
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| Over Charge Volt: | 3.75±0.05V | Over Charge Release: | 3.55±0.05V |
| Over Discharge Volt: | 2.2±0.1V | Over Discharge Release: | 2.7±0.05V |
| Constant Discharge Current: | 80A | Peak Discharge Current: | 250±50A |
| Charge Current: | 40A As Default | Port: | Same Port For Charge And Discharge |
| Balance Current: | 35±5mA | Balance Wire: | Attached |
| Balance Method: | Passive Balance | ||
| High Light: | 48V LFP li ion battery management system,16S 48V li ion battery management system,16S 48V solar bms |
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Product: 16S48V80A BMS for 3.2V Rated LifePO4 Battery Pack With Balance
Why do we need battery management system?
Battery Management Systems are the brains/CPU behind battery packs. They manage the output, charging, discharging and provide notifications on the status of thebattery pack. They also protect the batteries from damage.
Lithium ion is a kind of active metal, compared to lead acid battery, lithium ion is more active, which casuses over charge, over discharge problem.It needs a protection. BMS is the one that protect your battery from being damaged.
What is battery management system BMS?
Deligreen BMS is defined as an electronic system that manages a rechargeable battery(lithium phosphate, NCM battery, single cell or battery pack) by monitoring its state, calculating secondary data, reporting that data, protecting the battery, controlling its environment, and do balancing .This is a very worthy of money to make your battery packs a BMS.
What advantage of the BMS?
1. Use top quality (A-level) protective integrated circuit IC, from the solution of Seiko of Japan.
2. Strong load ability, use high voltage resistance, low inner resistance power Mosfet. The heat sink will greatly help cooling.
3. IC itself has power balancing function. The circuit is simple and reliable.
4. 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 can be added.
5. Extreme low power consumption. The consumption of the whole device is less than 50uA.
6. PCB use high anti-corrosion, high water resistance, high impedance ESD conformal Coating.
How to choose the suitable BMS?
You need to make sure of following information
1. Battery type:LifePO4,LTO, Li-NCM battery.
2. Battery pack configuration: No. of series and paralles
3. Constant dischage current: the constant discharge current of your application
4. Constant charge current: the constant charge current of your application
5. Peak discharge current:the highest discharge can a BMS stand
6. Limitation of the controller
What Applications for the BMS?
Important Specification
| Content | Spec | Unit | ||||||
| 80A | 100A | 120A | 150A | 200A | 250A | |||
| Discharge | constant discharge current | 80 | 100 | 120 | 150 | 200 | 250 | A |
| peak discharge current | 260±30 | 300±30 | 360±50 | 450±10 | 450±10 | 600±100 | A | |
| Over current protection | 260±30 | 300±30 | 360±50 | 450±10 | 450±10 | 600±100 | A | |
| charge | charge voltage | Series No.*3.65 | V | |||||
| charge current | 80 | 100 | 120 | 150 | 200 | 250 | A | |
| Over charge protection | over charge volt | 3.75±0.05 | V | |||||
| over charge 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 | 35±5 | mA | ||||||
| Over discharge protection | Over discharge detect volt | 2.2±0.1 | 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 | Off-load | |||||||
| Temperature protection | Temp protection | none | ℃ | |||||
| 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 | -40~80 | ℃ | |||||
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.
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.
Contact Person: Mr. Leo Zeng
