Programmable BMS with SMBus , I2C, Communication protocol
1.Protection Circuit Board for 6S 22.2V Li-ion and Li-Polymer battery pack;
2.PCB applies for 6 configuration Li-ion and Li-Polymer battery pack;
3.To prevent the battery packs from overcharge,overdischarge,over current, over temperature ,short circuit ;
4.With cell balance/equilibrium function;
5.Compatible with all the Li-ion and Li-Polymer cells.
6.How balancing function works? after battery pack is fully charged. PCM will detect each cell's voltage and trim higher voltage down until other cells reach the same voltage level. Therefore, it helps cells have longer service life.
BMS mainly designed based on TI chips, TIBQ78350+BQ76940/BQ76930/BQ76940, and the mosfets for discharge and charge current we mainly use IRF4310/IRF3207/IRF1404 (Only for reference), the specified parameters as below (all the logical parameters are adjustable from software).
(Note: the pictures or parameters in this data sheet are only for your reference, those possibly could be different from the ones you will order. Due to the upgrading of the Hardware/Firmware/Software,Characteristics subject to change without notice, for more information, please contact our technical engineers by email:info@sunbest.net
Specifications
| Item |
Contents |
Criteria
(Adjustable from software/hardware)
|
| 1 |
Model |
BEST-#### |
5S-15S
Adjustable from software and hardware
|
| 2 |
Voltage |
Charging voltage |
Adjustable from software |
| 3 |
Current |
Maximal continuous charging current |
80A (adjustable from hardware) |
| Maximal continuous discharging current |
80A (adjustable from hardware) |
| Current consumption |
≤200μA
|
| 4 |
Overcharge Protection |
Over charge detection voltage |
Adjustable from software |
| Over charge detection delay time |
Adjustable from software |
| Over charge release voltage |
Adjustable from software |
| 5 |
Over Discharge Protection |
Over discharge detection voltage |
Adjustable from software |
| Over discharge detection delay time |
Adjustable from software |
| Over discharge release voltage |
Adjustable from software |
| 6 |
Over Current Protection |
Over current detection voltage |
Adjustable from software |
| Over current detection current |
Adjustable from software and hardware |
| Detection delay time |
Adjustable from software |
| Release condition |
Adjustable from software |
| 7 |
Short Circuit Protection |
Detection condition |
Adjustable from software |
| Detection delay time |
Adjustable from software |
| Release condition |
Cut load, automatically recover |
| 8 |
Balance
On @ ≥50mV±5mV
OFF @ ≤30mV±5mV
|
Balance voltage for single cell |
Adjustable from software |
| Balance current for single cell |
Adjustable from hardware |
| 9 |
Resistance |
Inner resistance |
≤20mΩ |
| 10 |
Temperature |
Single cell temperature when discharge (over temp. protection) ≥65℃ |
Adjustable from software |
| Single cell temperature when discharge (low temp. protection) <-40℃ |
Adjustable from software |
| Single cell temperature when Charge (over temp. protection) ≥50℃ |
Adjustable from software |
| Single cell temperature when Charge (low temp. protection) <0℃ |
Adjustable from software |
| 11 |
Fuel/Gas gauge |
Display with LEDs (optional) |
Thru one button to check capacity |
