JK Smart BMS JK-B1A8S20P/JK-B2A8S20P User Manual
The current calibration function can be used to calibrate the accuracy of the BMS current
collection.
When you find an error between the total current collected by the BMS and the actual current
of the battery, you can use the current calibration function to calibrate the BMS.
To calibrate, fill in the current measured battery current, and then click the 'Set' button next to
Current Calibration to complete the calibration.
i)
Cell UVP(V), Cell UVPR(V)
The “Cell UVP(V)” is cell under-voltage protection which refers to the cut-off voltage of the cell.
Whenever the voltage of any cell in the battery pack is lower than this value, the 'cell under-voltage
alarm' is generated, and the BMS turns off the discharge MOS at the same time, so the battery cannot
be discharged and can only be charged. After the alarm is generated, only when all the cell voltage
value exceeds the value of “Cell UVPR(V)” which means cell under-voltage protection recovery,
BMS will release the 'cell under-voltage alarm' and turn on the discharge MOS.
j)
Cell OVP(V), Cell OVPR(V)
"Cell OVP(V)" is cell over-voltage protection. As long as the voltage of any cell exceeds this value,
the "Battery Over-voltage Alarm" will be generated and the BMS will turn off the charging MOS at
the same time, so the battery cannot be charged, but only discharged. After the alarm is generated,
only when the voltage of all cells is below the "Cell OVPR(V)" value, the BMS will release the
"Battery Over-voltage Alarm" and turn on the charging MOS.
k)
Power Off Vol.(V)
The “Power Off Vol.(V)” indicates the minimum voltage at which the BMS will operate and the BMS
will shut down when the highest voltage of the cell in the battery pack falls below this value. This value
must be lower than the "cell under-voltage protection".
l)
Max Charge Curr.(A), Charge OCP Delay(S), Charge OCPR Time(S)
When charging the battery pack, the current exceeds the "MAX Charge Curr.(A)" and the duration
exceeds the "Charge OCP Delay(S)" time, the BMS generates a "charge over-current alarm" and turns
off the charging MOS. After the time of "Charge OCPR Time(S)", the BMS will release the charge
over-current alarm and turn on the charging MOS again.
Example: Set the "Max Charge Curr.(A)" to 10A, "Charge OCP Delay(S)" to 10 seconds, and "Charge
OCPR Time(S)" to 50 seconds. If the charging current exceeds 10A for 10 seconds in a row during
charging, the BMS will generate a 'charging over-current alarm' and turn off the charging MOS at the
same time. 50 seconds after the alarm is generated, the 'charging over-current alarm' will be released
and the BMS will turn on the charging MOS again.
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