Battery Protection Circuit Module (BMS/PCM) for 8S 29.6V Li-ion/Li-Polymer Battery Packs
Features and Benefits
1.Protection Circuit Board for 29.6V 8S Li-ion and Li-Polymer battery pack;
2.PCM applies for 8 cells Li-ion/Li-Polymer battery pack with E-Switch integrated, E-Switch can totally turn off the output;
3.To prevent the battery packs from overcharge,overdischarge,over current, over temperature ,short circuit ;
4.With cell balance/equilibrium function;
5.Compatible with both 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.
7.PCM comes with all the voltage detection wires and connectors.
Specifications
|
Item |
Contents |
Criteria (Adjustable) |
|
|
1 |
Model |
HCX-D885 /OZ7714 |
8S-25A working current |
|
2 |
Voltage |
Charging voltage |
33.6V |
|
3 |
Current |
Maximal continuous charging current |
25A/15A |
|
Maximal continuous discharging current |
25A/25A |
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|
Current consumption |
≤50μA |
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|
4 |
Overcharge Protection |
Over charge detection voltage |
4.2V~4.35V(Adjustable) |
|
Over charge detection delay time |
700ms-1300ms |
||
|
Over charge release voltage |
4.0V~4.2V(Adjustable) |
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5 |
Over Discharge Protection |
Over discharge detection voltage |
2.3V~3.0V(Adjustable) |
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Over discharge detection delay time |
700ms-1300ms |
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Over discharge release voltage |
2.3V~3.0V(Adjustable) |
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6 |
Discharge Over Current Protection (1st Protection) |
Over current detection current R=0.5mR/70 |
Adjustable |
|
Detection delay time |
100ms±50ms |
||
|
Release condition |
Cut load & charge to recover |
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7 |
Discharge Over Current Protection (2nd Protection) |
Over current detection current R=0.5mR/140 |
Adjustable |
|
Detection delay time |
50ms±10 |
||
|
Release condition (delay: 100ms) |
Cut load & charge to recover |
||
|
8 |
Charge Over Current Protection |
Over current detection current R=0.5mR/30 |
Adjustable |
|
Detection delay time |
1000ms±200 |
||
|
Release condition (delay: 500ms) |
Disconnect the charger |
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|
8 |
Short Circuit Protection |
Short circuit detection current |
≥300A (actual testing is needed) |
|
Detection delay time |
125-400us |
||
|
Detection condition |
Cut load/charge to recover |
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|
9 |
Balance |
Balance voltage for single cell |
4.20±0.020V |
|
Balance current for single cell |
20mA±6mA |
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|
10 |
Temperature Protection
10KNTC B=3435
|
Charge Over Temp Protection |
55℃±4℃ |
|
Discharge Over Temp Protection |
75℃±4℃ |
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|
Charge Under Temp Protection |
-7℃±4℃ |
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|
discharge Under Temp Protection |
-20℃±4℃ |
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|
Temp. Protection delay |
3S±1.5S |
||
|
11 |
Resistance |
Inner resistance P- B- |
≤5mΩ |
|
12 |
Temperature |
Operating temperature range |
0 ~ +65°C |
|
Storage temperature range |
0 ~ +85°C |
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|
13 |
Size (L*W*T) |
L72mm*W36mm*T12mm |
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