Functional Overview - Nuvation Energy NUVG5 Product Manual

3. Functional Overview

The Nuvation Energy G5 High-Voltage BMS provides many functions to allow flexible and configurable
management/control of a stack. The following sections provides a brief summary of the product
functions.
Monitor DC Bus and Stack Voltages
The G5 Stack Switchgear measures both the DC Bus and the battery stack voltages. These
measurements allow for improved pre-charge and multi-stack capability.
Configurable for Different Battery Chemistries
The G5 Cell Interface is capable of measuring cells which vary in voltage between 1.6 and 4.3
volts. This range of voltage can support many lithium and lead-acid cell chemistries. A maximum
of 480 cells can be measured by using a maximum of 20 G5 Cell Interface modules connected to
one G5 Stack Switchgear.
Configurable Safe Limits of a Stack
As part of a UL 1973 certification, the safe operational range of a stack must be enforced by the
G5 Stack Switchgear. A factory configuration is used to provide the initial safety configuration and
is used within the certification process. Nuvation Energy provides a safety manual to guide the
process of how to configure a stack for certification review. Once a safety configuration is
established, the factory configuration can be locked to prevent further modification.
User Configurable Operational Range
After a stack is deployed, a user may choose to further limit the operational range of a stack. For
example the PCS may require a minimum voltage that is higher than the stack's minimum voltage.
For cases such as this, the G5 Stack Switchgear has a user configurable set of operational limits
that can be set to meet these additional constraints. These configurations can be persisted into
non-volatile storage and write protected with a password. A short list of these operational limits
include:
▪
High and Low Cell Voltage
▪
High and Low Stack Voltage
▪
High Charge Current and High Discharge Current
▪
High and Low Cell Temperature
GPI/GPO Interfaces
Two GPIs and two GPOs are available to allow interfacing with external connections such as:
▪
PCS emergency OFF
▪
E-Stop output
▪
External indicator LEDs
▪
Ground Fault Detector Input
▪
Manual clear faults
▪
DC-OK
Document ID: NE-DS-011
Nuvation Energy G5 High-Voltage BMS - NUVG5 Product Manual
10 Rev 1.0, 2023-05-19
G5 Faraday