19S-20S BMS
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LT-20S57120 20S NMC Seperate Port BMS 20A-65A
20S 74V Li-ion BMS
Charging Current 5A-20A
Discharging Current 30A-60A
Over charge protection
Over discharge protection
Over current protection
Short circuit protection
Temperature protection
Blancing
Weak switch (Optional)
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Specification
*this design is Separate Port Design
| No. | Tested Item | Criterion | |||||||||||
| 1 | Voltage | Charging Voltage | DC:84V CC/CV | ||||||||||
| Blance Volatage for single cell | 4.2V | ||||||||||||
| 2 | Current | Blance Current for single cell | 45-80mA ±5 mA | ||||||||||
| Current consumption | ≤60μA | ||||||||||||
| Max continuous charging current | 5A to 20A | ||||||||||||
| Max continuous discharging current | 30 to 65A | ||||||||||||
| 3 | Over Charge Protection | Over charge detection voltage | 4.25±0.03V | ||||||||||
| Over charge detection delay time | 800-1600ms | ||||||||||||
| Over charge release voltage | 4.15±0.05V | ||||||||||||
| 4 | Over Discharge Protection | Over discharge detection voltage | 2.7±0.1V | ||||||||||
| Over discharge detection delay time | 800-1500ms | ||||||||||||
| Over discharge release voltage | 3.0±0.1V | ||||||||||||
| 5 | Over Current Protection | Over current detection Current | 1.5 by work current | ||||||||||
| Over current detection current | 3 by work current | ||||||||||||
| Release condition | Cut load | ||||||||||||
| Over current detection delay time | 700-1300ms | ||||||||||||
| 6 | Short Circuit Protection | Detection condition | Exterior short circuit | ||||||||||
| Release condition | Cut short circuit | ||||||||||||
| Short circuit detection delay time | <1000us | ||||||||||||
| 7 | Temperature Protection | Temperature Protection | +50℃ +75℃ cutoff | ||||||||||
| 8 | Interior Resistance | Main loop electrify resistance | VC=4.2V,RDS≤60mΩ | ||||||||||
| 9 | Temperature | Operating Temperature | -45℃ --+65℃ | ||||||||||
| Storage Temperature | -45℃ -- +85℃ | ||||||||||||
Arthur
Arthur
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