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Thermal Consistency
For safety certified systems, there is an additional constraint on thermal consistency for all
temperature measurements for each Cell Interface. The constraint is described in detail in the
Sensor Fault Detection section within the Nuvation Energy BMS: Safety Manual (available on
request).
4.4.2.1. Connection Procedure
Connect to Surface
It is recommended to use thermally conductive/electrically non-conductive epoxy to adhere the
thermistors to the cells.
Connect to Cell Interface
'Temperature' cable connects to the 'Temperature Sensors' port at the bottom of the Cell
Interface.
4.4.3. Connect Battery Cells Cable
The Battery Cells cable provides cell voltage input and a means for balancing the cells.
Power Requirements
There is no minimum cell voltage requirement when powering the Cell Interface module from the
Link Bus.
However, if powering the Cell Interface - 12 channel module from the cells (i.e. not powering from
the Link Bus, a minimum of 11V must be present between the most negative and most positive
cells.
Similarly, if powering the Cell Interface - 16 channel module or the Cell Interface - 12V 4 channel
module from the cells (i.e. not powering from the Link Bus), the cells are connected as two groups
and a minimum of 11 V must be present between the most negative and most positive cells of
each group.
4.4.3.1. Connection Procedure
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
requiring a Stack Switchgear configuration update.
Connect to Cells
Connect the cables wires to the battery voltage sense leads. The individual wires are labelled to
help with identifying the connections. Verify the cell voltages present on the connector are correct.
While the Cell Interface module is tolerant of most wiring errors, incorrect connections may cause
the cells to discharge.
Refer to the wiring examples below for the specific Cell Interface module used.
Document ID: NE-PM-003
support@nuvationenergy.com
30
Nuvation Energy High-Voltage BMS - Product Manual
if there is a change in battery topology
Rev 1.2, 2021-03-03
Curie Update 1
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