| Protection Circuit Module Specifications For 48V LiFePO4 Battery Packs | |||
| No |
Test item
(Test at normal temperature 25±2ºC and relative humidity≤90%) |
Criterion | |
| 1 | Communication Interface | UART/Bluetooth/SMBus | |
| 2 | Capacity | Designing battery capacity(PCM) | 100Ah |
| Max capacity (Battery pack) | 320Ah | ||
| Min capacity (Battery pack) | 100mAh | ||
| External capacity Indication | LCD, LED, SOC | ||
| Gas gauge algorithm | CEDV algorithm | ||
| 3 | Voltage | Charging voltage | DC: 54V CC/CV (3.6V/1cell) |
|
Cell-balance detection voltage
(Charge balance) |
3.6V±0.03V | ||
| Cell-balance release voltage | 3.5V±0.025V | ||
| Cell-balance detection delay time | 0.96 ~1.4s | ||
| 4 | Current | Balance current for single cell | 84±5mA |
| Current consumption for single cell | ≤20μA | ||
|
Normal operating-mode current
(Gas Gauge IC) |
650uA | ||
|
SLEEP operating-mode current
(Gas Gauge IC) |
300uA | ||
|
FULL SLEEP operating-mode current
(Gas Gauge IC) |
0.1uA | ||
| Maximal continuous charging current | 100a(Max) | ||
| Maximal continuous discharging current | 100a(Max) | ||
| 5 | Over charge Protection | Over charge detection voltage | 3.900 ± 0.025 V |
| Over charge detection delay time | 0.5S ~1.5S | ||
| Over charge release voltage | 3.600 ± 0.050 V | ||
| 6 | Over discharge protection | Over discharge detection voltage | 2.00 ± 0.080 V |
| Over discharge detection delay time | 50 ~150ms | ||
| Over discharge release voltage | 2.70 ± 0.100 V | ||
| 7 | Over current protectio | Over current detection voltage | 0.2±0.015V |
| Over current detection current | 450±50a(can adjust) | ||
| Detection delay time | 5~20ms | ||
| Release condition | Cut load | ||
| 8 | Short protectio | Detection condition | Exterior short circuit |
| Detection delay time | 200-800us | ||
| Release condition | Cut load | ||
| 9 | Resistance | Protection circuitry (MOSFET) | ≤40mΩ |
| 10 | Temperatur | Operating Temperature Range | -40 ~+85ºC |
| Storage Temperature Range | -40 ~+125ºC | ||
| Dimension | L240*W120*T12mm | ||
| B+ :Battery+ |
|
||
| B- :Battery- | |||
| SMBD:SMBus data line | |||
| SMBC:SMBus clock line | |||
| RT1,RT2,RT3:NTC | |||
| P+ :Discharge+ | |||
| P- :Discharge- | |||