niu N-GT, Service Manual

Page: 60 / 144

V1.0.0 60
Table of BMS STATE(BMS Status)
No Load:
Discharging:
Charging:
Over-Charged:
Over-Discharged:
Charging Over-Current
Discharging Over-Current
Over Temperature
Temperature Low
Other Warning(Open Circuit detected/ Difference between Cell Voltages is higher than 0.3V.If the
difference value is higher than 0.05V and lower than 0.3V, BMS would automatically start voltage
balance mode)
Short Circuit
Water Detected
BMS MOS Failure
How to read Battery voltage
（
Ref 30
）
Connect H1 to Battery Pack directly, Press BMS_Info Icon to Read battery total voltage and single
cell voltage
T
he max total voltage is 71.4V
and
max single cell voltage is 4.2V
The max voltage difference is 0.3V
The display will show code 30
（
Battery overcharge
）
when the battery total voltage reached 71.4V
or single cell reached 4.2V
Discharging warning code 131 will show on the display when the battery total voltage below 54.4V
BMS will enter protection state when the battery total voltage below 52.7V and single cell will be
3.1V
（
+- 0.1V
）