BW-4S-S30A BMS Protection Board
Main function:
Over charge protection, over discharge protection function, short circuit protection function, over current protection function, band balance.
Interface definition:
Charging port of the plate and the discharge port is the same, both positive and B- connecting battery”-“, P- charging port and port on the negative electrode;B-, N-, P- pads are all over the hole, the hole diameter of the pad is 3.5mm;The battery charging detection interface with DC output in the form of needle. Do the same mouth when the N- is not wiring.
Specification:
| Details | Specification |
| Continuous discharge current | 30(MAX)A |
| Instantaneous discharge current | 70A |
|
Charging voltage
|
16.8V |
| Charging current | 30(MAX)A |
| Over charge detection voltage | 4.28±0.05V |
| Over charge protection delay | 0.1S |
| Over charge release voltage | 4.08±0.01V |
| Battery balance detection voltage | 4.2±0.025V |
| Battery balance release voltage | 4.2±0.05V |
| Electricity balance current | 60±5mA |
| Over discharge detection voltage | 2.55±0.08V |
| Over discharge detection delay | 0.1S |
| Over discharge release voltage | 3.0±0.1V |
| Over current detection voltage | 150mV |
| Over current detection delay | 9mS |
| Over current protection current | 75±5A |
| Over current protection release condition | Disconnect load |
| Short circuit protection condition | External load short circuit |
| Short circuit detection delay | 250uS |
| Short circuit protection release condition | Disconnect the load switch |
| Temperature protection | / |
| Main circuit conduction internal resistance | ≤15mΩ |
|
Working current
|
≤30uA |
| Sleep current (when the battery is over-discharged) | ≤10uA |
|
Operating temperature
|
-30℃~+80℃ |
| Size | 45x56mm |
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