Protection Circuit Module (PCM) with Balance Function &Temperature Protection Function for Li-Ion & LiFePO4 4 Series Connection 14.8V & 12.8V at 30A limited
| No. |
Tested Items |
Parameters |
|
| 1 | Voltage | Charging voltage | CC/CV Li-ion/Li-polymer(4.2V/cell) LiFePO4(3.6V/cell) |
| Balance voltage for single cell | Li-ion:4.20 V±0.03V， LiFePO4:3.60V±0.03V |
||
| 2 | Current | Balance current for single cell | 0-130mA |
| Current consumption for single cell | ≤20μA | ||
| Maximal continuous charging and discharging current | 30A | ||
| 3 | Over-charge Protection | Over charge detection voltage | 4.25V +/- 0.025V (Li-Ion) 3.9V +/- 0.025V (LFP) |
| Over charge detection delay time | 0.5-1.5S | ||
| Over charge release voltage | 4.05V +/- 0.025V (Li-Ion) 3.8V +/-0.025V (LFP) |
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| 4 | Over-discharge Protection | Over discharge detection voltage | 2.5V +/- 0.07V (Li-Ion) 2.0V +/-0.05V (LFP) |
| Over discharge detection delay time | 100-200mS | ||
| Over discharge release voltage | 3.0V +/-0.1V (Li-Ion) 2.3V +/-0.05V (LFP) |
||
| 5 | Over-Current Protection | Over current detection voltage | 0.6V +/- 0.1V |
| Over current detection current | 90-110A | ||
| Detection delay time | 5-15ms | ||
| Release condition | Cut load | ||
| 6 | Short Protection | Detection condition | Exterior short circuit |
| Detection delay time | 100-500us | ||
| Release condition | Cut load | ||
| 7 | Resistance | Protection circuitry（B+ to P+） | ≤30mΩ |
| 8 | Temperature | Operating temperature range | -40-+85℃ |
| Storage temperature range | -40-+125℃ | ||
| 9 | Temperature Protection | Thermostat | 60℃ |
| 10 | Size | Length x Width x Thickness | 60mm*60mm*5mm (2.36″x2.36″x0.20″) |
Remarks:
- The PCM is specially designed for Li-Ion/Li-polymer/LiFePo4 4S 14.8V/12.8V with 30A discharging rate. It’s different from others, whose balance function is set to ensure battery fully charged and safety.
- PCM will detect each cell’s voltage and trim higher voltage down until other cells reach the same voltage level. Therefore, it helps batteries have longer service life.
- In case of high constant current more than 10A, it’s strongly recommended that additional protection components to ensure safety, for example, polyswitch, NTC, fuse,etc.
- The safety PCM is specially designed for professionals. Mis-understanding and abuse use may cause battery damaged or overheated, even exploded.
