Input / Output Assignment - Nuvation Energy NUV300-BC-12 Product Manual

stack_cell_balancer.min_enable_current
▪
The minimum current at which balancing remains enabled (mA)
▪
This is typically set to a negative value to enable balancing below certain charge currents
▪
For example, a value of -10000 causes balancing to be disabled when charging at greater
than 10 A
stack_cell_balancer.max_enable_current
▪
The maximum current at which balancing remains enabled (mA)
▪
This may be a negative or positive value depending upon application requirements
▪
For example, a value of 200 causes balancing to be disabled when discharging at greater than
200 mA
The two most common use cases are:
1. Balance only while charging: In this case, both the minimum and maximum current thresholds
are set to negative values that correspond to the range of charge currents under which balancing
should take place.
2. Balance while charging and holding: In this case, the maximum current threshold is set to a
slightly positive value so that the stack will balance when it is idle or disconnected. The level of
discharge current flow tolerated during idle balancing is application-specific and is thus
configurable.
7.6.3.4. Cell Balancing Duty Cycle
All the energy that is removed from a cell by passive balancing is dissipated as heat. If the amount of
heat dissipated is too great, its desirable to reduce the amount of balancing applied to the cells.
Passive balancing is applied for the majority of a cell voltage scan period defined by the register
sc_linkbus[0].scan_period. Balancing is disabled every linkbus scan cycle to measure the cell voltages.
The register sc_linkbus[0].balance_settle_period provides the period of time balancing is turned off
before measuring cell voltages. The duration of balancing applied to all cells can be reduced by
increasing this delay period.

The sc_linkbus[0].balance_settle_period`
minimum of 50 ms and must be smaller then the linkbus scan period.

7.7. Input / Output Assignment

The Low-Voltage BMS implements the following inputs and outputs:
▪
Fault Pilot output signal (internal)
▪
Fault Pilot input signal (internal)
▪
Fault Clear input signal
▪
Shutdown input signal
▪
Factory Reset input signal
Document ID: NE-PM-002
Nuvation Energy Low-Voltage BMS - Product Manual
register value
111
must be between
Rev 1.2, 2021-03-03
Curie Update 1
a