Shenzhen XUWEN Technology Co.,Ltd
Factory of lithium-ion battery packs, lithium battery protection management systems, lithium battery testing equipment.
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60A Constant Charge And Current 11.1V Or 14.4V Lithium BMS System With For 3S Or 4S Li Ion Battery Pack
Application :This is The BMS for 3 series 12.6V (11.1) V or 4S 16.8V (14.4V) Lithium battery pack with 60A constant constant discharge current ,Which would be applied for Conveter or solar power system .
| No. | Test item | Criterion | ||
| li-ion | lifepo4 | |||
| 1 | Voltage | Charging voltage | DC:16.8V 4.2v/Cell | DC:14.4V 3.6v/CV |
| Balance voltage for single cell | 4.20±0.025V | 3.60±0.025V | ||
| 2 | Current | Balance current for single cell | 42±5mA | |
| Current consumption | ≤20μA | |||
| Maximal continuous charging current | 50A | |||
| Maximal continuous Discharging current | 50A | |||
| 3 | Over charge Protection | Over charge detection voltage for single cell | 4.25±0.025V | 3.9±0.025v |
| Over charge detection delay time | 0.5S-2S | |||
| Over charge release voltage for single cell | 4.05±0.05V | 3.8±0.05V | ||
| 4 | Over discharge protection | Over discharge detection voltage for single cell | 2.5±0.08V | 2.0±0.08V |
| Over discharge detection delay time | 10mS-200mS | |||
| Over discharge release voltage for single cell | 3.0±0.1V | 2.5±0.1V | ||
| 5 | Over current protection | Over current detection voltage | 0.2±0.025V | 0.1±0.025V |
| Over current detection current | 150±30A | |||
| Detection delay time | 5ms-20ms | |||
| Release condition | cut load and recharge | |||
| 6 | Short protection | Detection condition | Exterior short circuit | |
| Detection delay time | 200-500us | |||
| Release condition | cut load and recharge | |||
| 7 | Resistance | Protection circuitry(MOSFET) | ≤20mΩ | |
| 8 | Temperature | Operating Temperature Range | -40~+65ºC | |
| Storage Temperature Range | -40~+125ºC | |||
Notes ; 1.Before the battery Pack , please grade your cell in good consistency condition ( voltage different should
not be more than 0.05V,inner impedance should be no more than 0.5mO,capacity difference should be no more than 30mA)
for NCM battery or Li ion battery , the intial voltage should not be more than 4V and should not be lowered than 3V ,the
battery should be connected in parallels first and then make series connection
2.Connecting B- wire first and then strictly in order from 1cell postitive to the 4 cell positive .
Note : Please conenct these wires in order strictly as above to avoid any potential damage of the battery BMS .