Nuvation BMS NUV300-BC-12 User manual

Installation Guide
Nuvation BMS™ Low-Voltage Battery Controller
2018-10-08, Rev. 2.0
© Copyright 2018, Nuvation Energy

Table of Contents
Important Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê1
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê2
1.1. About this Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê2
2. System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê3
3. Battery Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê4
3.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê4
3.2. GPIO Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê4
3.3. CAN Bus and RS485 / Modbus RTU Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê5
3.4. Power Supply, Current Shunt, and Contactor Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . Ê5
3.5. Mechanical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê5
3.6. Electric Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê6
3.6.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê6
3.6.2. J1: Link Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê6
3.6.3. J2: Ethernet / Modbus TCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê7
3.6.4. J3: CAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê7
3.6.5. J4: RS485 / Modbus RTU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê8
3.6.6. J5: Control / GPIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê8
3.6.7. J6: Contactors / -V Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê10
Connecting to Contactor Coils. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê11
3.6.8. J7: Current Shunt / +V Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê14
Connecting to a Current Shunt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê15
3.6.9. J8: Cell Voltage / Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê16
Battery Cell Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê16
3.7. Grounding and Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê25

Important Safety Information
The content in this document must be followed in order to ensure safe operation of Nuvation
BMS™.
Do NOT connect the J7: Current Shunt / +V Power connector to the Battery
Controller until all other connections have been made.
Properly insulate or remove any unused wires. Unused wires can couple
excessive system noise into Nuvation BMS which can disrupt
communication and lead to undesirable behaviors.
Please be aware of high voltages present in your system and follow all
necessary safety precautions.
The provided module enclosures are not fire enclosures.

Depending on battery chemistry, there might be a nominal voltage per cell
which adds up in series and is always present. There are many different
battery chemistries with different current capacities, and so high voltage
with high current capacity may be present while connecting the Nuvation
BMS. You must use proper electrical safety precautions when handling any
part of the Nuvation BMS. Neither Nuvation Energy or any of its employees
shall be liable for any direct, indirect, incidental, special, exemplary,
personal or consequential harm or damages (including, but not limited to,
procurement or substitute goods or services; loss of use, data, or profits; or
business interruption) however caused and on any theory of liability,
whether in contract, strict liability, or tort (including negligence or
otherwise) arising in any way out of the use of this product.

The Nuvation BMS relies on your system charger to charge the battery
cells; do not leave your charger off while the Nuvation BMS is powered from
the stack for prolonged periods of time. The Nuvation BMS should be shut
down when the system is in storage to minimize the drain on the cells.
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1. Introduction
Thank you for choosing Nuvation BMS™
Nuvation BMS™ Low-Voltage Battery Controller is an enterprise-grade battery management
system with features that extend battery life, ensuring battery safety, and cell balancing.
You can take advantage of the highly configurable browser-based user interface and custom-tune
Nuvation BMS™ Low-Voltage Battery Controller to your specific target application.
1.1. About this Guide
This Installation Guide: Nuvation BMS™ Low-Voltage Battery Controller provides wiring
instructions to connect your Nuvation BMS™ Low-Voltage Battery Controller to your system.
Once you have successfully completed the installation process, please follow instructions in the
Operator Interface Guide for accessing and configuring the Nuvation BMS™ Operator Interface for
the Battery Controller.
We thrive on your feedback and what we build is driven by your input. Please submit
support tickets to [e-mail].
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2. System Overview
The Nuvation Low-Voltage BMS™ can be used as a complete battery management system to
manage up to 12 or 16 battery cells in series.
An example configuration is shown in Nuvation Low-Voltage BMS™ System Overview
Figure 1. Nuvation Low-Voltage BMS™ System Overview
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3. Battery Controller
3.1. Overview
Nuvation BMS™ Low-Voltage Battery Controller module safely manages up to 12 or 16 cells by
measuring cell voltage, temperature and current and applying software decision-making to control
contactors, communicate with energy storage controllers, and interface with general purpose I/O.
Battery Controller is able to operate as a stand-alone battery management system, requiring no
additional Nuvation BMS modules to manage a stack of up to 12 or 16 cells.
Battery Controller is available in two models:
•The NUV300-BC-12 which can monitor up to 12 series-connected cells
•The NUV300-BC-16 which can monitor up to 16 series-connected cells
3.2. GPIO Block
The GPIO and control inputs are accessible at the J5: Control / GPIO connector.
The general-purpose outputs from the Battery Controller are implemented using optical MOSFET
switches. These outputs are non-polarized, presenting an on-resistance of typically 2Ω and
capable of carrying 400mA of DC or RMS current when activated. GPIO Circuit Diagram shows a
high level circuit diagram for the GPO pins.
GPO_ISOx_B
60V DC Isolation
GPO_ISOx_A
Logic GPO
x4
GPIO
Figure 2. GPIO Circuit Diagram
The general-purpose and specific-purpose (FAULT_CLEAR, FACTORY_RESET, SHUTDOWN) inputs to the Battery
Controller are implemented using optical isolation components. The current source for these
inputs is provided in the Battery Controller and each input is activated by providing a simple
contact closure to the common point.
The BMS Enable input differs slightly from the other specific-purpose inputs. This control requires
a contact closure between the BMS_ENABLE# and VBOT signals and must not be referenced to the
common point of the other inputs. It is used to start the Battery Controller after it has been shut
down due to activation of the SHUTDOWN input, low battery, or some other condition invoked under
software control. BMS_ENABLE# is pulled up to the battery stack positive (potentially 60V away from
VBOT) so the switch/external controller must be tolerant of the maximum battery stack voltage.
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3.3. CAN Bus and RS485 / Modbus RTU Block
The CAN Bus communication channel is available on the J3: CAN connector. The RS485 / Modbus
RTU communication channel is available on the J4: RS485 / Modbus RTU connector.
These communication channels are isolated from the battery stack and share their common
reference with each other, with the general-purpose I/O, and with the specialized control inputs. A
120Ω bus termination is required on each end of the bus for these communication channels.
Termination is not provided within the Battery Controller on stock production units.
3.4. Power Supply, Current Shunt, and Contactor Drivers
Operating power, including primary power source for operating the contactor coils, is connected to
the Battery Controller at two connectors: positive to the J7: Current Shunt / +V Power connector, and
negative to the J6: Contactors / -V Power connector.
The current shunt, which is connected in series with the battery stack at the positive end,
connects its sense points to the Battery Controller at the J7: Current Shunt / +V Power connector.
Up to four system contactors may be connected and controlled by the Battery Controller,
connecting to the Battery Controller at the J6: Contactors / -V Power connector.
3.5. Mechanical Dimensions
The overall dimensions of the Battery Controller are 220mm X 125mm X 30mm. Extra space
should be provided around the module to allow for easy installation/maintenance.
Dimensions in the diagram below are shown in inches
The Battery Controller should be securely mounted in a vertical orientation, in an environment
that permits free movement of air through all ventilation slots for convection cooling. The Cell
Connections connector (J1) should be facing up or to the left. If it is to be used with a battery
chemistry such as lead-acid, which does not require balancing, the Battery Controller may be
mounted horizontally, with the ventilation slots oriented upwards. It is not advisable to mount the
Battery Controller on the underside of a horizontal surface.
The Nuvation BMS™ Low-Voltage Battery Controller weighs approximately 0.4kg.
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Figure 3. Mechanical Drawing of Battery Controller
3.6. Electric Connections
3.6.1. Overview
The Battery Controller module has eight connectors. Each connector is described in the following
sections in detail.
3.6.2. J1: Link Out
In certain situations, it may be required to monitor more than 16 cells in series, as such is the
case with 2V lead-acid cells. This connector is used to connect to an additional cell interface
module to manage more cells and thermistors. Contact [e-mail] for
application details.
RJ-45 Plug Details describes a typical compatible plug for the J1: Link Out jack.
Table 1. RJ-45 Plug Details
Conec 391J00039X
Manufacturer Conec
Housing 391J00039X
Housing material Polycarbonate UL94V-0
Circuits 8
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Crimp terminal insulation displacement
Wire gauge range AWG24-26 stranded or
solid
The Link Out interface connector is a standard RJ45 Cat5e rated jack. This interface is used to
connect the Battery Controller to an expansion module, to provide monitoring additional
cells/thermistors.
Table 2. Link Out Connector Pin Assignment
Pin Connection Description Connected to Device
1 No Connect Not Connected No Connect
2 No Connect Not Connected No Connect
3 No Connect Not Connected No Connect
4 No Connect Not Connected No Connect
5 No Connect Not Connected No Connect
6 No Connect Not Connected No Connect
7 LINKBUS_N Link Bus differential pair negative Expansion module
8 LINKBUS_P Link Bus differential pair positive Expansion module
3.6.3. J2: Ethernet / Modbus TCP
The Ethernet / Modbus TCP jack is a standard RJ45 Cat5e rated jack. This interface is used as the
primary means of connecting an external system to the Battery Controller to configure the
operating parameters, observe the status, and perform maintenance such as firmware upgrades.
RJ-45 Plug Details describes a typical compatible plug for the J2: Ethernet / Modbus TCP jack.
Table 3. Ethernet / Modbus TCP Connector Pin Assignment
Pin Connection Description Connected to Device
1 TD_P Transmit differential pair positive External Equipment
2 TD_N Transmit differential pair negative External Equipment
3 RD_P Receive differential pair positive External Equipment
4 NUL45 Unused; connected to Pin 5 and
terminated
External Equipment
5 NUL45 Unused; connected to Pin 4 and
terminated
External Equipment
6 RD_N Receive differential pair negative External Equipment
7 NUL78 Unused; connected to Pin 8 and
terminated
External Equipment
8 NUL78 Unused; connected to Pin 7 and
terminated
External Equipment
3.6.4. J3: CAN
The CANBus 2.0 connector is a standard RJ45 Cat5e rated jack. This interface provides an isolated
CANBus 2.0 port.
CANBus termination is not provided within the Battery Controller on stock production units.
Standard 120Ω termination must be installed at each end of the CANBus network.
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RJ-45 Plug Details describes a typical compatible plug for the J3: CAN jack.
Table 4. CANBus RJ45 Connector Pin Assignment
Pin Connection Description Connected to Device
1 CAN_P CAN bus differential pair positive External Equipment
2 CAN_N CAN bus differential pair negative External Equipment
3 COMIO Common reference shared with GPIO External Equipment
4 No Connect Not Connected No Connect
5 No Connect Not Connected No Connect
6 No Connect Not Connected No Connect
7 COMIO Common reference shared with GPIO External Equipment
8 No Connect Not Connected No Connect
3.6.5. J4: RS485 / Modbus RTU
The RS-485 connector is a standard RJ45 Cat5e rated jack. This interface provides an isolated RS-
485 (Modbus-RTU) port.
RS485 termination is not provided within the Battery Controller on stock production units.
Standard 120Ω termination must be installed at each end of the Modbus-RTU network.
RJ-45 Plug Details describes a typical compatible plug for the J4: RS485 / Modbus RTU jack.
Table 5. RS485 / Modbus RJ45 Connector Pin Assignment
Pin Connection Description Connected to Device
1 No Connect Not Connected No Connect
2 No Connect Not Connected No Connect
3 No Connect Not Connected No Connect
4 MODBUS_P MODBUS differential pair positive External Equipment
5 MODBUS_N MODBUS differential pair negative External Equipment
6 No Connect Not Connected No Connect
7 No Connect Not Connected No Connect
8 COMIO Common reference shared with GPIO External Equipment
3.6.6. J5: Control / GPIO
J5: Control / GPIO plug housing and terminal details describes the recommended plug and crimp
terminals to be used with the J5: Control / GPIO connector.
Table 6. J5: Control / GPIO plug housing and terminal details
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Samtec IPD1-12-D
Manufacturer Samtec Inc
Housing IPD1-12-D
Housing material Nylon (Zytel® PA66)
UL94V-2
Circuits 24
Crimp terminal CC79R-2024-01-L
Wire gauge range AWG20-24 stranded
This interface provides connections to isolated general purpose inputs and outputs, and also
specific function inputs that can be used to:
•Enable the power supply
•Invoke or force a system shutdown
•Clear system faults
•Invoke a factory reset
The functionalities of the general purpose inputs and outputs are configured by the end-user to
match their needs.
Table 7. GPI, GPO, and Special Function Connector Pin Assignment
Pin Connection Description Connected to Device
1 GPO_ISO0_A Digital Output 0 External Equipment
2 GPO_ISO1_A Digital Output 1 External Equipment
3 GPO_ISO2_A Digital Output 2 External Equipment
4 GPO_ISO3_A Digital Output 3 External Equipment
5 +5V_GPIO_ISO Isolated +5V I/O Power Supply External Equipment
6 GPI_ISO0_K Input detector 0 External Equipment
7 GPI_ISO1_K Input detector 1 External Equipment
8 GPI_ISO2_K Input detector 2 External Equipment
9 GPI_ISO3_K Input detector 3 External Equipment
10 FAULT_CLEAR# Momentary to COMIO to clear faults Processor GPI via logic
elements
11 FACTORY_RESET# Hold to COMIO during startup to
perform a factory reset
Processor GPI via logic
elements
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Pin Connection Description Connected to Device
12 BMS_ENABLE# Momentary to VBOT to enable BMS;
Hold to VBOT to defeat Shutdown
Power supply enable gate
NOTE: different reference from other
inputs
13 GPO_ISO0_B Digital Output 0 External Equipment
14 GPO_ISO1_B Digital Output 1 External Equipment
15 GPO_ISO2_B Digital Output 2 External Equipment
16 GPO_ISO3_B Digital Output 3 External Equipment
17 COMIO Isolated I/O Power Supply Common
Reference
External Equipment
18 COMIO Isolated I/O Power Supply Common
Reference
External Equipment
19 COMIO Isolated I/O Power Supply Common
Reference
External Equipment
20 COMIO Isolated I/O Power Supply Common
Reference
External Equipment
21 COMIO Isolated I/O Power Supply Common
Reference
External Equipment
22 COMIO Isolated I/O Power Supply Common
Reference
External Equipment
23 SHUTDOWN# Momentary to COMIO to invoke
shutdown; Hold to COMIO to force
shutdown
Processor GPI via logic
elements, hard shutdown
(no software) via logic
elements with longer press
24 VBOT VBOT
3.6.7. J6: Contactors / -V Power
J6: Contactors / -V Power plug housing and terminal details describes the recommended plug and
crimp terminals to be used with the J6: Contactors / -V Power connector.
Table 8. J6: Contactors / -V Power plug housing and terminal details
Molex 39-01-2125
Manufacturer Molex Incorporated
Housing 39-01-2125
Housing material Nylon UL94V-0
Circuits 12
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Crimp terminal 39-00-0073
Wire gauge range AWG18-24 stranded
This interface is used to drive up to four (4) external contactor coils and to select their power
source. The negative operating power is provided in a fused connection to this connector.
Connecting to Contactor Coils
The Battery Controller provides coil drivers for contactor coils up to 24V DC. The Battery
Controller’s internal 24V power supply may be used to power the coils if the following conditions
are satisfied:
•24V coils are connected
•The worst-case coil inrush current is below 1.5A
•The sum of all connected coil currents is less than 1A
To use the internal power supply, connect together pins 11 (+VCOIL) and 12 (+24V) of J6 to deliver
+24V to the +VCOIL input. Pin 5 (VCOIL_RETURN) is left disconnected and should be insulated to prevent
shorts.
Other coil voltages in the 12V-24V range and total currents of up to 1.5A/coil may be supported
through the use of an external DC power source. Such a supply must be connected between +VCOIL
(pin 11) and VCOIL_RETURN (pin 5) of J6.
As depicted in Connection example for powering the Battery Controller from external DC power
source, if an external power supply is used to power the Battery Controller instead of the battery
stack, the VCOIL_RETURN (pin 5) connection of J6 must be externally connected to the bottom of the
battery stack. If using a dedicated external power supply to power the contactor coils, connect the
common return of that supply to this pin.
Coil back-EMF protection is provided by the Battery Controller that clamps at 40V. External
clamping diodes of lower voltages may be connected if required.

The bottom of the attached battery stack is internally connected to the common
return path for all contactor coils (pins 1~5 of J6). It is recommended that no
ground connection be made at the coils to avoid creating an inadvertent ground
fault or ground loop.
Contactor coils are to be connected between the COILn_HI and COM pins of J6 as required. When
the Battery Controller activates a contactor, the COILn_HI output is driven to a VCOIL voltage level.
Unused contactor coil wires should be properly insulated or removed. Refer to Connection example
for powering the Battery Controller from cells and Connection example for powering the Battery
Controller from external DC power source for use of the –VPOWER connection at J6.
Contactor coils, internal and external supply connections to J6 are shown in Connection to J6: Two
24V contactor coils powered from internal supply and Connection to J6: Four contactor coils
powered from external supply.
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Figure 4. Connection to J6: Two 24V contactor coils powered from internal supply
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Figure 5. Connection to J6: Four contactor coils powered from external supply
Table 9. Stack Power Return and Contactors Connector Pin Assignment
Pin Connection Description Connected to Device
1 COM Negative Coil 1 Contactor 1 negative coil
connection
2 COM Negative Coil 2 Contactor 2 negative coil
connection
3 COM Negative Coil 3 Contactor 3 negative coil
connection
4 COM Negative Coil 4 Contactor 4 negative coil
connection
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Pin Connection Description Connected to Device
5 VCOIL_RETURN Negative reference for external supply External Power Supply.
Refer to Connection
example for powering the
Battery Controller from cells
and Connection example for
powering the Battery
Controller from external DC
power source for additional
requirements
6 -VPOWER Power return of Battery Controller Bottom of Stack
7 COIL1_HI Positive Coil 1 Contactor 1 positive coil
connection
8 COIL2_HI Positive Coil 2 Contactor 2 positive coil
connection
9 COIL3_HI Positive Coil 3 Contactor 3 positive coil
connection
10 COIL4_HI Positive Coil 4 Contactor 4 positive coil
connection
11 +VCOIL 12~24V Contactor Coil Power Supply Connect to external power
supply, or to pin 12 if
driving contactor coil from
internal power supply
12 +24V Internal Power Supply Connect to pin 11 if driving
contactor coils from internal
power supply
3.6.8. J7: Current Shunt / +V Power
J7: Current Shunt / -V Power plug housing and terminal details describes the recommended plug
and crimp terminals to be used with the J7: Current Shunt / +V Power connector.
Table 10. J7: Current Shunt / -V Power plug housing and terminal details
Molex 39-01-2065
Manufacturer Molex Incorporated
Housing 39-01-2065
Housing material Nylon UL94V-0
Circuits 6
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Crimp terminal 39-00-0073
Wire gauge range AWG18-24 stranded
This interface is used to connect the current shunt and the (optional) 10kΩ NTC thermistor on the
current shunt to the Battery Controller. The positive operating power is provided in a fused
connection to this connector.
This connection must only be made after all other connections to the Battery
Controller have been made.
Connecting to a Current Shunt
The Battery Controller requires the shunt to be on the high side (positive end) of the battery
stack. The VSHUNT_REF signal is used to compensate for the voltage drop in the sense wires as well
as to provide the positive reference for measuring the overall voltage of the stack. VSHUNT_BAT and
VSHUNT_LOAD carry the differential voltage measurement from the shunt. VSHUNT_BAT must be closest to
the battery cells and VSHUNT_LOAD must be closest to the Stack Fuse so that the measured current
has the correct polarity. Run all three wires close together to minimize outside interference.
Figure 6. Current shunt and Power fuse connection to J7
Table 11. Current Shunt Connector Pin Assignment
Pin Connection Description Connected to Device
1 +VPOWER Main power supply input Positive end of the stack or
other power source
2 No Connect Not Connected No Connect
3 No Connect Not Connected No Connect
4 VSHUNT_LOAD Differential voltage input; Load side Load side of current shunt
5 VSHUNT_BAT Differential voltage input; Battery side Battery side of current
shunt
6 VSHUNT_REF Voltage reference for voltage
measurement
Battery side of current
shunt
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3.6.9. J8: Cell Voltage / Temperature
This interface is used to connect the battery cell voltage sense wires as well as up to eight 10kΩ
NTC thermistors to the Battery Controller module.
Table 12. J8: Cell Voltage / Temperature plug housing and terminal details
Samtec IPD1-20-D
Manufacturer Samtec Inc
Housing IPD1-20-D
Housing material Nylon (Zytel® PA66)
UL94V-2
Circuits 40
Crimp terminal CC79R-2024-01-L
Wire gauge range AWG20-24 stranded
Battery Cell Connections
The following two models of the Battery Controller are available, supporting a variety of cell counts
and voltage ranges:
NUV300-BC-12: Connected cells are monitored internally by a single functional block. This
functional block requires a minimum stack voltage of 11V to operate and measure its input
voltages. The total voltage across the stack can be up to 60V. Unused cell tap wires should be
connected to the last cell in the stack. See NUV300-BC-12: Connecting 12 cells to J8 and NUV300-
BC-12: Connecting 8 cells to J8 for examples of how to connect cells to the NUV300-BC-12.
NUV300-BC-16: Connected cells are monitored internally by two functional blocks, each
measuring eight cells (C0 to C8 and C8 to C16). Each functional block requires a minimum of 11V
across it to operate and measure its input voltages. The total voltage across the stack can be up
to 60V. See NUV300-BC-16: Connecting 16 cells to J8, NUV300-BC-16: Preferred method of
connecting 11 cells to J8 and NUV300-BC-16: Less optimal method of connecting 11 cells to J8 for
examples of how to connect cells to the NUV300-BC-12.
Groups do not need to contain the same number of cells but the maximum and minimum voltage
limits must be met, as stated in Battery Controller supported cell connections.
Table 13. Battery Controller supported cell connections
Battery Controller Cell
groups
Max cell
inputs per
group
Max cell
voltage
per input
Max total
voltage
across
group
Max total
voltage
across all
groups
Min
voltage
per group
NUV300-BC-12 1 12 5V 60V 60V 11V
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Battery Controller Cell
groups
Max cell
inputs per
group
Max cell
voltage
per input
Max total
voltage
across
group
Max total
voltage
across all
groups
Min
voltage
per group
NUV300-BC-16 2 8 5V 40V 60V 11V
The same style of connector is used for cell voltage and temperature sensor connection in both the
NUV300-BC-12 and NUV300-BC-16. The names of the pins for the J8 connector are given in
Battery Cell Voltage and Temperature Probes connector pin assignment.
Table 14. Battery Cell Voltage and Temperature Probes connector pin assignment
Pin Connection Description Connected to Device
1 TPROBE1 External Temperature Probe Input 1 10kΩ NTC Thermistor
2 VBOT_TEMP External Temperature Probe Reference
1
10kΩ NTC Thermistor
3 TPROBE2 External Temperature Probe Input 2 10kΩ NTC Thermistor
4 VBOT_TEMP External Temperature Probe Reference
2
10kΩ NTC Thermistor
5 TPROBE3 External Temperature Probe Input 3 10kΩ NTC Thermistor
6 VBOT_TEMP External Temperature Probe Reference
3
10kΩ NTC Thermistor
7 TPROBE4 External Temperature Probe Input 4 10kΩ NTC Thermistor
8 VBOT_TEMP External Temperature Probe Reference
4
10kΩ NTC Thermistor
9 TPROBE5 External Temperature Probe Input 5 10kΩ NTC Thermistor
10 VBOT_TEMP External Temperature Probe Reference
5
10kΩ NTC Thermistor
11 TPROBE6 External Temperature Probe Input 6 10kΩ NTC Thermistor
12 VBOT_TEMP External Temperature Probe Reference
6
10kΩ NTC Thermistor
13 TPROBE7 External Temperature Probe Input 7 10kΩ NTC Thermistor
14 VBOT_TEMP External Temperature Probe Reference
7
10kΩ NTC Thermistor
15 TPROBE8 External Temperature Probe Input 8 10kΩ NTC Thermistor
16 VBOT_TEMP External Temperature Probe Reference
8
10kΩ NTC Thermistor
17 NC No connect
18 NC No connect
19 NC No connect
20 NC No connect
21 NC No connect
22 NC No connect
23 VCELL16 Cell 16 voltage sense Connect to positive terminal
of Cell 15
24 VCELL15 Cell 15 voltage sense Connect to positive terminal
of Cell 14
25 VCELL14 Cell 14 voltage sense Connect to positive terminal
of Cell 13
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Pin Connection Description Connected to Device
26 VCELL13 Cell 13 voltage sense Connect to positive terminal
of Cell 12
27 VCELL12 Cell 12 voltage sense Connect to positive terminal
of Cell 11
28 VCELL11 Cell 11 voltage sense Connect to positive terminal
of Cell 10
29 VCELL10 Cell 10 voltage sense Connect to positive terminal
of Cell 9
30 VCELL9 Cell 9 voltage sense Connect to positive terminal
of Cell 8
31 VCELL8 Cell 8 voltage sense Connect to positive terminal
of Cell 7
32 VCELL7 Cell 7 voltage sense Connect to positive terminal
of Cell 6
33 VCELL6 Cell 6 voltage sense Connect to positive terminal
of Cell 5
34 VCELL5 Cell 5 voltage sense Connect to positive terminal
of Cell 4
35 VCELL4 Cell 4 voltage sense Connect to positive terminal
of Cell 3
36 VCELL3 Cell 3 voltage sense Connect to positive terminal
of Cell 2
37 VCELL2 Cell 2 voltage sense Connect to positive terminal
of Cell 1
38 VCELL1 Cell 1 voltage sense Connect to positive terminal
of the lowest cell in the 12
or 16 cell module
39 VCELL0 Bottom of stack reference Connect to negative
terminal of the lowest cell in
the 12 or 16 cell module
40 VSTACK_SENSE Voltage sense reference Connect to negative
terminal of the lowest cell in
the 12 or 16 cell module
Connecting to a Battery Controller - 12 channel (NUV300-BC-12)
Refer to Battery Cell Voltage and Temperature Probes connector pin assignment for the pin name
assignment of the cell voltage and temperature sensor connector J8 for the NUV300-BC-12.
Connecting to the NUV300-BC-12 is very straightforward since all connected cells belong to a
single group.
It is important to connect all cells in ascending voltage order, such that the negative terminal of
the most negative (bottom) cell connects to VCELL0 of J8, and the positive terminal of each cell
connects in ascending voltage order to VCELL1, VCELL2, etc. If fewer than 12 cells are connected,
then the top cell and all unused cell inputs between the top cell and VCELL12 must be connected to
VCELL12. Inputs VCELL13 through VCELL16 may be left disconnected, as shown in NUV300-BC-12:
Connecting 8 cells to J8.
Use a separate wire to connect input VSTACK_SENSE to the negative end of the most negative
(bottom) cell.
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