8.2. Cell Interface
8.2.1. Battery Cells
The Battery Cells connector provides cell voltage input and a means for balancing the cells. The cable
wire should be rated for at least 750 mA to survive worse-case currents.
Pins 8, 16, 17, and 18 are
No Connect
in the Cell Interface - 12 channel model. Pins 2, 4, 6, 8, 10, 11,
12, 13, 14, 15, 16, and 17 are
No Connect
in the Cell Interface - 12V 4 channel model.
All unused voltage inputs should be tied to the next highest potential voltage sense input. In this
way, all pins should be connected with the exception of pins 8, 16, 17 and 18 in the Cell Interface -
12 channel model and pins 2, 4, 6, 8, 10, 11, 12, 13, 14, 15, 16, and 17 in the Cell Interface - 12V 4
channel model.
The wiring of the battery cell voltage and temperature sensing should be verified
before
connecting to the Cell Interface modules. The temperature sensing wires
must be isolated from the cell voltage sensing leads. Although the Cell Interface
includes protective circuitry to make it 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 Cell Interface and/or the cells.
The Stack Switchgear is pre-configured to expect a defined battery topology, based
on the information provided to Nuvation Energy during order fulfillment. Connecting
a differing battery topology will result in undesirable Stack Switchgear behavior.
Please contact
if there is a change in battery topology
requiring a Stack Switchgear configuration update.
Table 20. Battery Cells: Molex Micro-Fit 3.0 Connector
Molex 43025-1800
Manufacturer
Molex Incorporated
Housing
43025-1800
Housing material
Nylon UL94V-0
Circuits
18
Crimp terminal
43030-0002
Wire gauge range
AWG20–24 stranded
Nuvation Energy High-Voltage BMS - Product Manual
Document ID: NE-PM-003
75
Rev 1.2, 2021-03-03
Curie Update 1
