Thermistor Inputs; Operational Limits - Nuvation Energy NUV300-BC-12 Product Manual

cell[n].installed
▪
Indicates a cell is physically connected
▪
Set to 1 if connected
▪
Set to 0 if not connected
Cell indexing is statically assigned in such a way that cell[0] always refers to the first cell on the
Low-Voltage BMS.
When using a Cell Interface expansion module, cell[16] refers to the first cell in the Cell Interface
expansion module.

7.4.2. Thermistor Inputs

The Low-Voltage BMS—along with its expansion Cell Interface module—may be connected to fewer
than the maximum supported number of thermistors. The following registers are used to indicate
which thermistors are actually present in the stack. The index n is the zero-based index of the
thermistor input.
therm[n].installed
▪
Indicates a thermistor is physically connected
▪
Set to 1 if connected
▪
Set to 0 if not connected
Thermistor indexing is statically assigned in such a way that therm[0] always refers to the first
thermistor on the Low-Voltage BMS.
When using a Cell Interface expansion module, therm[8] refers to the first thermistor in the Cell
Interface expansion module.

7.5. Operational Limits

The operational limits of a battery stack are captured in the form of voltage, temperature, and
current thresholds. These thresholds must be set correctly for your battery cells and DC bus system
so that the BMS can:
1. Control current during charging and discharging to keep the battery within normal operating
limits.
2. Warn operators and external systems if the battery is not within normal operating limits
3. Disconnect the battery from the DC bus under a fault condition if the battery is approaching
unsafe limits
Nuvation Energy BMS can either be in an operating or non-operating zone. The operating zone is also
known as the All Clear zone while the non-operating zone is further divided into the Warning and
Fault zones. All three zones are illustrated below graphically.
Document ID: NE-PM-002
Nuvation Energy Low-Voltage BMS - Product Manual
93 Rev 1.2, 2021-03-03
Curie Update 1