Battery Management Systm (BMS) with Smbus Communication protocol for 3 cells in series Li-ion/Li-Polymer/LiFePO4 Battery Packs with Smbus
Features and Benefits
1.BMS for 3S 9.6V/11.1V LiFePO4/Li-ion battery pack;
2.BMS applies for 3 cells LiFePO4/Li-ion battery pack.
3.To prevent the battery packs from overcharge,overdischarge,over current, over temperature ,short circuit ;
4.Without cell balance/equilibrium function;
5.Compatible with LiFePO4/Li-ion cells;
6.BMS with Smbus communication
7.BMS comes with all the voltage detection wires and connectors.
Specifications
|
Item |
Contents |
Criteria(Adjustable) |
|
|
1 |
Model |
BD-0056-3S-V1 |
3S-4.5A working current |
|
2 |
Voltage |
Charging voltage |
10.8V |
|
3 |
Current |
Maximal continuous charging current |
4.5A |
|
Maximal continuous discharging current |
4.5A |
||
|
Current consumption |
≤40μA |
||
|
4 |
Overcharge Protection |
Over charge detection voltage |
?V±0.03V |
|
Over charge detection delay time |
1~3S |
||
|
Over charge release voltage |
?V±0.05V |
||
|
5 |
Over Discharge Protection |
Over discharge detection voltage |
?V±0.05V |
|
Over discharge detection delay time |
1~3S |
||
|
Over discharge release voltage |
?V±0.1V |
||
|
6 |
Discharge Over Current Protection (1st Protection) |
Over current detection current |
20A±2A |
|
Detection delay time |
1~4S |
||
|
Release condition |
Cut load,automatically recover |
||
|
7 |
Discharge Over Current Protection (2nd Protection) |
Over current detection current |
23A±2A |
|
Detection delay time |
1~4S |
||
|
Release condition |
Cut load,automatically recover |
||
|
8 |
Charge Over Current Protection |
Over current detection current |
10A±3A |
|
Detection delay time |
1~4S |
||
|
Release condition (delay: 500ms) |
automatically recover |
||
|
8 |
Short Circuit Protection |
Detection condition |
|
|
Detection delay time |
100~1000uS |
||
|
Release condition |
Cut load,automatically recover |
||
|
9 |
Balance |
Balance voltage for single cell |
?±0.015V |
|
Balance current for single cell |
?mA±25mA |
||
|
10 |
Temperature Protection |
Charge Over Temp Protection |
40℃±4℃ |
|
Discharge Over Temp Protection |
70℃±4℃ |
||
|
Charge Under Temp Protection |
0℃±4℃ |
||
|
discharge Under Temp Protection |
-20℃±3℃ |
||
|
11 |
Resistance |
Inner resistance |
≤30mΩ |
|
12 |
Temperature |
Operating temperature range |
0 ~ +70°C |
|
Storage temperature range |
0 ~ +70°C |
||
|
13 |
Size (L*W*T) |
L137mm*W49mm*T4mm |
|
EEROM
|
Power management IC |
BQ4050 |
||||
|
Communication protocol |
SMBUS |
||||
|
IC software version |
0001 |
||||
|
Nominal capacity of cell |
? mAh |
||||
|
Battery pack configuration |
3S |
||||
|
Voltage standard |
3200mV±5mV |
||||
|
Current standard |
5000mA±10mA |
||||
|
temperature standard |
Current temperature ±3°C |
||||
|
|
|
||||
|
Power consumption |
model |
Minimum value |
Typical value |
maximum value |
unit |
|
Operating mode |
100 |
200 |
450 |
uA |
|
|
sleep mode |
20 |
130 |
220 |
uA |
|