Battery Cells And Temperature (Connector J8) - Nuvation Energy NUV300-BC-12 Product Manual

4.2.6. Battery Cells and Temperature (Connector J8)

The Voltage and Thermistor cable has voltage sense wires for the battery cell as well as up to eight
10 kΩ NTC thermistors. This cable connects into the Battery Cells and Temperature (J8) interface on
the Low-Voltage BMS.
Figure 16. 16 channel, 7 Thermistor UL cable (NUVW-C19A03-010)
For pin assignment table, refer to
Table 4. Low-Voltage BMS supported cell connections
Low-Voltage BMS
NUV300-BC-12
NUV300-BC-16
The wiring of the battery cell voltage and temperature sensing should be verified
before connecting to the Low-Voltage BMS and Cell Interface. The temperature
sensing wires must be isolated from the cell voltage sensing leads. Although the

Low-Voltage BMS and Cell Interface include protective circuitry to make them more
resilient to brief wiring errors, the same circuitry can result in the battery cells being
slowly discharged. Over time, these wiring errors can cause damage to the Low-
Voltage BMS, Cell Interface, and/or the cells.
4.2.6.1. Battery Cells Connections for Low-Voltage BMS - 12 channel
Connected cells are monitored internally by a single functional block. This functional block requires a
minimum stack voltage of 11 V to operate and measure its input voltages. The total voltage across
the stack can be up to 60 V. Unused cell tap wires should be connected to the last cell in the stack.
See Figure 17 and Figure 18
Connecting to the NUV300-BC-12 is very straightforward since all connected cells belong to a single
group.
The cells must be connected in ascending voltage order, such that the negative terminal of the most
negative (bottom) cell connects to VCELL0 and the positive terminal of each cell connects in ascending
voltage order to VCELL1, VCELL2, etc. If fewer than 12 cells are connected, the top cell and all unused
cell inputs between the top cell and VCELL12 must be connected to VCELL12. Inputs VCELL13 through
Document ID: NE-PM-002
Section 9.1.8
Cell groups Total cell
inputs per
group
1 12
2 8
for examples of how to connect cells to the NUV300-BC-12.
Nuvation Energy Low-Voltage BMS - Product Manual
Max cell Max total
voltage per voltage across
input group
5V 60V
5V 40V
23
Max total Min voltage
voltage across per group
all groups
60V 11V
60V 11V
Rev 1.2, 2021-03-03
Curie Update 1