This way, a BMS helps prevent your battery from:
Overcharge
Overvoltage
Overcurrent
Overtemperature
Cell Imbalance
Shorter life cycle
Additionally, a BMS optimizes your battery capacity and overall performance in every charge/discharge process. This way, you can get the most out of your LiFePO4 battery pack regarding performance and lifespan.
Electric Parameter | | | | | | | ||||||
NO. | Project | | Min. | Typ. | Max. | Unit | ||||||
1 | voltage | Charging voltage | 41.95 | 42.00 | 42.05 | V | ||||||
| | Balance voltage for single cell | 4.200 | 4.225 | 4.250 | V | ||||||
2 | Current | Balance current for single cell | 37 | 42 | 47 | mA | ||||||
| | Current consumption | / | / | 50 | uA | ||||||
| | Maximal continuous charging current | / | / | 15 | A | ||||||
| | Maximal continuous discharging current | / | / | 15 | A | ||||||
3 | Over charge protection | Overcharge detection voltage for single cell | 4.20 | 4.25 | 4.30 | A | ||||||
| | Overcharge detection delay time | 500 | / | 1500 | mS | ||||||
| | Overcharge release voltage for single cell | 4.10 | 4.15 | 4.20 | V | ||||||
4 | Over discharge protection | Overdischarge detection voltage for single cell | 2.65 | 2.70 | 2.75 | V | ||||||
| | Overdischarge detection delay time | 100 | / | 400 | mS | ||||||
| | Overdischarge release voltage for single cell | 2.90 | 3.00 | 3.10 | V | ||||||
5 | Overcurrent protection | Over current detection voltage | 0.975 | 0.1 | 0.125 | V | ||||||
| | Over discharge current detection current | 60 | 65 | 70 | A | ||||||
| | Over charge current detection current | 27 | 32 | 37 | A | ||||||
| | Detection delay time | 100 | / | 400 | mS | ||||||
| | Release condition | Cut load,Automatic recovery | | | | ||||||
6 | Short protection | Use 5.2AH 3C lithium battery test, more than 5.2Ah need to provide batteries to our company for testing | | | | | ||||||
| | Detection delay time | 200 | / | 500 | μS | ||||||
| | Release condition | Cut load,Auto recovery | | | | ||||||
7 | Resistance | Protection circuitry (MOSFET) | / | / | 20 | mΩ | ||||||
8 | Temperature | Operating Temperature Range | -40 | / | 65 | ℃ | ||||||
| | Storage Temperature Range | -40 | / | 85 | ℃ | ||||||
9 | protection | Charging high temperature protection | 46 | 50 | 54 | ℃ | ||||||
| | Charging high temperature protection recovery | 43 | 47 | 50 | ℃ | ||||||
| | Charging low temperature protection | -4 | 0 | 4 | ℃ | ||||||
| | Charging low temperature protection recovery | 1 | 5 | 9 | ℃ | ||||||
| | Discharge high temperature protection | 66 | 70 | 74 | ℃ | ||||||
| | Discharge high temperature protection recovery | 51 | 55 | 59 | ℃ |