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7.2.5. Address Resolution Restrictions
Some components are configured with a register address to perform read/write access on the
registers data. Refer to
use this register access indirection with the components listed in
read/write to these component registers will fail if the battery management system has
Lockdown
enabled. The components impacted by this restriction are as follows:
stack_contactor
sc_gpo
sc_gpo_shutdown
sc_gpi
stack_breaker
The sc_canbus and sc_canbus_bulk_map components are not impacted by this address
resolution restriction for read operations. Write operations from CAN
fail as noted above.
7.3. Battery Parameters
These following settings are used to configure State-of-Charge (SoC) and State-of-Health (SoH)
algorithms for operation with a particular battery chemistry.
7.3.1. Stack Capacity
Battery stack capacity is defined as the total amount of charge that can be extracted from a battery
stack when discharging from full to empty, assuming current limits are properly followed. Nominal (or
design) capacity is configured as follows:
stack_soc.nominal_capacity
▪
Nominal capacity of the battery stack
▪
Set to the capacity that would correspond to a full discharge
The nominal capacity of the stack is identical to that of the cells used within the
stack, where a cell may be one or more electro-chemical cells directly connected in
parallel. The actual capacity of the battery stack maybe less than this nominal
capacity due to imbalances in SoC and capacity fade of the cells with usage. Correct
configuration of the nominal capacity is essential for accurate SoC and SoH
estimation.
7.3.2. Stack Cycle Count
In addition to the nominal capacity, the nominal cycle count for the battery stack is required for SoH
estimation based upon cycle count.
Document ID: NE-PM-002
Section 7.1.1.3.4
for details of this register access. Some components can not
Nuvation Energy Low-Voltage BMS - Product Manual
Section
90
7.2.4. Any attempts to
Factory
commands
will
Rev 1.2, 2021-03-03
Curie Update 1
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