lifepo4 12v PCM/BMS/PCB for 4s/12.8V LiFePO4 Battery Pack
Negotiable /Piece
Min.Order:6 Pieces
lifepo4 12v PCM/BMS/PCB for 4s/12.8V LiFePO4 Battery Pack
BMS For 4S /12.8V LiFePO4 Battery Pack | |||
Model:OSN-4S0505-BMS | |||
No. | Test item | Criterion | |
1 | Voltage | Charging voltage | DC:14.4V 3.6V/Cell |
2 | Current | Current consumption for single cell | ≤50μA |
Maximal continuous Charging current | 5A | ||
Maximal continuous Discharging current | 5A | ||
3 | Over charge Protection | Over charge detection voltage | 3.90+0.025V |
Over charge detection delay time | 0.5—1.5S | ||
Over charge release voltage | 3.80+0.05V | ||
4 | Over discharge protection | Over discharge detection voltage | 2.30+0.08V |
Over discharge detection delay time | 50-150mS | ||
Over discharge release voltage | 2.70+0.1V | ||
5 | Over current protection | Over current detection voltage | 0.3+0.025V |
Over current detection current | 10+2A | ||
Detection delay time | 5ms—15mS | ||
Release condition | Cut load, Automatic Recovery | ||
6 | Short protection | Detection condition | Exterior short circuit |
Detection delay time | 200-500us | ||
Release condition | Cut load, Automatic Recovery | ||
7 | Resistance | Protection circuitry (MOSFET) | ≤60mΩ |
8 | Temperature | Operating Temperature Range | -40~+85°C |
Storage Temperature Range | -40~+125°C | ||
9 | Size | 50*16mm |
Main Functions:
The product has 6 main functions: over charge, over discharge, over current, short circuits, balancing and low-current lock.
1. Function of over charge protection: once voltage of any battery in the pack gets higher than the over charge protection point, charge cuts off to ensure all batteries work within the over charge protection point.
2. Function of over discharge: once voltage of any battery in the pack gets lower than the over charge protection point, discharge cuts off to ensure all batteries work beyond the over charge protection point.
3. Function of over current: during the discharge process of battery pack, once discharge current gets over the set over current protection point, output cuts off to ensure battery pack works within the safe limit of current.
4. Function of short circuit protection: once battery pack’s output port appears the condition of short circuit, it cuts off to ensure battery group not to be damaged because of short circuit.
5. Function of voltage balancing: in the late charging period of battery pack, voltage difference that appears during the using process of each battery could get balancing revised to ensure battery pack’s capacitance.
6. Function of low-current lock: series connection of low-current lock gets reserved and low current controls on-and-off of the main high current to make it safer and more convenient.