3s~5s 20A PCM BMS for 18V 18.5V Li-ion/Lithium/ Li-Polymer 15V 1 LiFePO4 Battery Pack with Smbus, RS232, Bluetooth Communication Protocol (PCM-L05S20-E21)
Product Description
Technical parameter
Product name:Protection Circuit Module
Model No:PCM-L05S20-E21
For 3S~5S Lithium-ion/Lithium Polymer/LiFePO4 Battery Packs
Product Feature:
1. Suitable for 3~5 section Lithium-ion/Lithium Polymer/LiFePO4 Battery Packs;
2. Same charging/discharging interface, working current 20A;
3. Overcharge, overdischarge, short circuit, overcurrent, temperature protection, etc.;
4. Temperature switch detects battery temperature and controls discharge MOSFE;
5. The metering IC adopts BQ78350, which can read the parameters such as voltage, capacity, current, temperature and cycle number;
6. SMBus communication protocol;
7. Through the model PCM-LCD001-415 display screen, the required information can be read
| Items | Specifications | ||
| Lithium-ion/Lithium Polymer | LiFePO4 | ||
| Communication Interface | I2C,SMBus,Bluetooth,RS232 | ||
| Capacity | Designing battery capacity(PCM) | 21Ah | |
| Max capacity(Battery pack) | 32000mAh | ||
| Min capacity(Battery pack) | 100mAh | ||
| External capacity Indication | LCD,LED,SOC | ||
| Gas gauge algorithm | CEDV algorithm | ||
| Voltage | Charging voltage(5S) | CC/CV:21V(4.2V/Cell) | CC/CV:18V(3.6V/Cell) |
| Cell-balance window | 50mV±10% | ||
| Cell-balance release voltage | 20mV±10% | ||
| Cell-balance detection delay time | 0.5~2s | ||
| Current | Balance current for single cell | 66±5mA | 56±5mA |
| Normal operating-mode current (Gas Gauge IC) | 800 uA | ||
| SLEEP operating-mode current (Gas Gauge IC) | 200 uA | ||
| FULL SLEEP operating-mode current (Gas Gauge IC) | 1 uA | ||
| Maximal continuous charging current | 20A | ||
| Maximal continuous discharging current | 20A | ||
| Over charge Protection | Over charge detection voltage | 4.25±0.025V | 3.80±0.05V |
| Over charge detection delay time | 1~2S | ||
| Over charge release voltage | 4.05±0.05V | 3.55±0.05V | |
| Over discharge protection | Over discharge detection voltage | 2.5±0.07V | 2.00±0.05V |
| Over discharge detection delay time | 1~2S | ||
| Over discharge release voltage | 3.0±0.1V | 2.7±0.05V | |
| Over current protectio | Over current detection voltage | 0.2±0.015V | |
| Over current detection current | 50±10A(can adjust) | ||
| Detection delay time | 5~60ms | ||
| Release condition | Cut load | ||
| Short protection | Detection condition | Exterior short circuit | |
| Detection delay time | 200-800us | ||
| Release condition | Cut load | ||
| Resistance | Protection circuitry (MOSFET)B- to P- | ≤20mΩ | |
| Temperature protectio | Charge temperature protection | 60ºC±5ºC | |
| Charge release temperature | 50ºC±5ºC | ||
| Discharge temperature protection | 65ºC±5ºC | ||
| Discharge release temperature | 55ºC±5ºC | ||
| Operating Temperature Range | -40~+85ºC | ||
| Storage Temperature Range | -40~+125ºC | ||
| Dimension | L64*W52*T10mm | ||