Under-Voltage Shutdown; Clock Verification - Nuvation Energy NUV300-BC-12 Product Manual

sc_gpo_fault_pilot.fault_enabled
▪
Set to 1 to enable Fault Pilot signal to assert when stack_factory_trigger_summary.fault is
tripped
sc_gpo_fault_pilot.fault_delay
▪
Set according to application (typically, between 100 and 5000 ms)

7.10.5. Under-Voltage Shutdown

The Low-Voltage BMS has the hardware feature to shut off the Low-Voltage BMS power when the
battery is at a critically low voltage level. This action prevents the battery management system from
draining the remaining power from the battery and prevent further damage. The shutdown feature
integrates with the same mechanism used by the shutdown input of the Low-Voltage BMS
9.1.5). The following registers need to be configured to manage this feature.
A combined Under Voltage Lock Out (UVLO) trigger is used to provide a shutdown input for either a
critically low stack or cell voltage.
stack_uvlo_cell_voltage.thresh
▪
Set to the lowest safe cell voltage for a battery. Must be the lowest voltage possible for battery
safety.
stack_uvlo_stack_voltage.thresh
▪
Set to the lowest safe stack voltage for a battery.
The above triggers are logically OR'd together into a combined trigger named stack_uvlo_combined. The
output of this trigger needs to be directed to the internal shutdown of the Low-Voltage BMS using the
following register configuration.
sc_gpo_shutdown.address
▪
Set to @stack_uvlo_combined.trig
sc_gpo_shutdown.inverted
▪
Set to 1
sc_gpo_shutdown.address_enabled
▪
Set to 1

7.10.6. Clock Verification

The Low-Voltage BMS module's two subsystems (power interface and stack controller subsystems)
each have an independent clock and these are checked against each other regularly to ensure proper
operation. The following components are associated with clock checking diagnostics.
sc_fault_clocks.disabled
▪
Setting to 1 enables clock checking on the stack controller subsystem
Document ID: NE-PM-002
Nuvation Energy Low-Voltage BMS - Product Manual
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Rev 1.2, 2021-03-03
Curie Update 1