Description
Battery protection board, as the name suggests, battery protection board is mainly for rechargeable (generally refers to lithium batteries) for protection Function of integrated circuit board. Lithium battery (rechargeable type) needs protection because of its own characteristics. Because the material of the lithium battery itself determines that it cannot be overcharged, over discharged, overcurrent, short circuited, and ultra-high temperature charging and discharging, the lithium battery components of the lithium battery will always appear with a protection board with a sampling resistor and a current fuse. This board can be used for 5~10 strings, and other strings can be changed directly.
Electrical parameters (5 strings of lithium-ion batteries)
1. Discharge: (1) Large discharge current: 15 A; (2) Instant discharge current: 25 A.
2. Charging: (1) Charging voltage: 21 V; (2) Charging current: 15 (MAX) A.
3. Overcharge protection: (1) Overcharge voltage: 4.28±0.05 V; (2) Overcharge protection delay time: 0.5 S;(3)Overcharge release voltage: 4.08±0.05 V.
4. Power balance: (1) Cell balance voltage: / V; (2) Power balance release voltage: /V; (3) Cell balance current: / mA.
5. Over-discharge protection: (1) Over-discharge voltage: 2.55±0.08 V; (2) Over-discharge delay: 0.1 S; (3) Over discharge release voltage: 2.9±0.1 V.
6. Over current protection: (1) Overcurrent voltage: 150 mV; (2) Overcurrent delay: 9 MS; (3) Overcurrent protection current: 30±3 A; (4) Overcurrent protection release condition: disconnect the load.
7. Short circuit protection: (1) Short-circuit protection conditions: short-circuit of external load; (2) Short circuit delay: 250 uS; (3) Short-circuit protection release conditions: disconnect the negative switch.
8. Temperature protection: temperature protection / ℃.
9. Internal resistance: The main circuit conduction internal resistance ≤20 mΩ.
10. Self-consumption: (1) Working current: ≤30 uA; (2) Sleep current (when the battery is over-discharged): ≤10 uA.
11. Working temperature: The temperature range is -30~+80 ℃. 5 series of 18.5V21V power tools. It is a special lithium battery protection board for solar energy, lighting, and 18650.
12.Protection board size: 88*17*3mm.
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