| Features |
| Smart device realizes the requirements of functions and specifications： |
| Equipped with Microchip MCU, which is driven by our own developed software and hardware, the PCM/BMS can exactly satisfy the requirements for functions and specifications of the device. Its application to most Li-ion batteries will be available after adjustment for relevant parameters on your demand. |
| Active voltage balancing mode abates voltage variations: |
| With voltage-balancing function, MCU always monitoring voltage variations among cells, takes a 2-phrase voltage-balancing mode to effectuate the voltage balance. |
| CCP/CVP charging mode makes it fast, exact and full to charge the battery. |
| Our self-innovative CCP/CVP charging mode facilitates a fast and highly efficient charge to the battery, even activating cell materials to a certain extent. |
| All-sided protective policy ensures safety. |
| Our PCM/BMS carrying impulsive protective units keep itself and batteries safe against over-charge, over-discharge over-current, over-temperature and short-circuit.( Specific items bear capabilities of detecting I.V.R. ratio to uplift operation efficiency for power tools.) |
| Our PCM/BMS in possession of the functions of giving low energy alarm and signals of abnormal status to users. |
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High power input and high power output smooth your operations. |
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Max continuous output current is up to 30A；Peak current is 80A. Very suitable for high power devices. |
| Zero Shutdown Quiescent Current |
| In case the system is put idle without being used, the circuitry of discharging board, even then tied up with battery pack, can isolate itself into open circuit off the battery pack. Therefore, no current of battery dissipates under this state. This safe recipe can protect the battery from being broken down due to the battery in low voltage long on the shelf. Our longest test till now has been remaining for four years. It is still live. |
| Charging together with balancing the battery, the charging unit designedly stands off the battery pack： |
| Both voltage-balancing unit and battery charger tied up as one, independent from discharging board that controls battery pack, can help cells to avoid heating and ill effect of higher temperature caused from voltage-balancing operation of PCM/BMS. |
BS-5138M1-4 4S Power tool Li-Ion Battery PCM/BMS
2-1. Functions
| Function | Instructions | Status | ||||
| Charge Mode | Led indicator | Charging | Normal charging status | Red Led blinks | ||
| Full storage | Any cell in the battery shows high storage. | Red Led keeps bright | ||||
| Finishing a complete charge | Finishing a charge by CCP/CVP mode with voltage-balancing operation | Red Led keeps bright | ||||
| Abnormal | Abnormal in Voltage or temperature | Red Led blinks | ||||
| Ambient condition checkup | Short circuit voltage | Inspecting cell characteristics | Judge normal cell or a bad cell | |||
| Open circuit voltage | Inspecting cell characteristics | Judge normal cell or a bad cell | ||||
| Under temperature | Below 0℃ | an abnormal temperature for charging | ||||
| Over temperature | Over 70℃ | an abnormal temperature for charging | ||||
| Charge Method | CCP | Multi-stage Constant Current charging mode (Compound Factor Relevance Charging Mode) |
Even current pulse charging method | |||
| CVP | Constant Voltage charging mode |
Even current pulse charging method | ||||
| Voltage Balancing | 2- phrase voltage balancing function | Delta voltage below 30mV±10% | 1stst phrase：charging/ voltage balancing till delta voltage beneath 50m V. 2nd phrase：voltage balancing till delta voltage beneath 30m V。 |
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| Discharge Mode | Led indicator | Discharge allowed | Any cell voltage stands beyond protection voltage. | Green Led keeps bright. The Max power output is 30A； Short-circuit protection operates on 80A. | ||
| Low Battery alarm | Any cell voltage falls at low voltage of alarm. | Green Led turns blink 0.5S in every0.5S, giving low battery alarm. | ||||
| Discharge prohibited | Any cell voltage reaches protection voltage | |||||
| Energy Storage Led indicator | Switch off/on | Battery storage stays between75%~100% | 4LED keeps bright on and three off. | |||
| Battery storage stays between 50%~75% | 3LED keeps bright on and three off. | |||||
| Battery storage stays between 25%~50% | 2LED keeps bright on and three off. | |||||
| Battery storage stays between 0%~25% | 1LED keeps bright on and three off. | |||||
| Ambient Condition Checkup | Operations of all parts go with ambient temperature range from between－20℃~80℃。Out of this range , functions all stop until temperature returns. | Refer to each part of instructions relevant to temperature. | ||||