NUV100 Datasheet: Nuvation High-Voltage BMS™...Generally, a single High-Voltage BMS system uses 1 Stack Controller, 1 Power Interface, and 1 or more Cell Interfaces. An example configuration

NUV100 Datasheet

Nuvation High-Voltage BMS™

2018-10-08, Rev. 2.0

© Copyright 2018, Nuvation Energy

Table of Contents

1. System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2. Nuvation BMS™ High-Voltage Stack Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.1. Hardware Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.1.1. Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.1.2. CAN 485 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.1.3. GPIO-Out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.1.4. GPIO-In. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.1.5. Link Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1.6. Stack Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1.7. Indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2. Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.2.1. Stack Bus Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.2.2. Link Bus Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.2.3. USB Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.2.4. Ethernet Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.2.5. GPIO-Out Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2.6. GPIO-In Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2.7. CAN Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2.8. Modbus Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3. Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3.1. Thermal Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3.2. Humidity Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3.3. Shock and Vibration Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.4. Mechanical Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3. Nuvation BMS™ High-Voltage Power Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.1. Hardware Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.1.1. Contactors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.1.2. Interlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.1.3. External Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1.4. Stack Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1.5. Current Shunt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1.6. Thermistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1.7. Stack Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1.8. Indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1.9. Reset Push-Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.2. Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.2.1. External Power Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.2.2. Stack Bus Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.2.3. Contactors Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.2.4. Interlock Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.2.5. Current Shunt Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.2.6. Thermistor Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.3. Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.3.1. Thermal Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.3.2. Humidity Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.3.3. Shock and Vibration Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.4. Mechanical Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4. Nuvation BMS™ High-Voltage Cell Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.1. Hardware Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.1.1. Battery Cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.1.2. Temperature Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.1.3. Link In. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.1.4. Link Out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.1.5. Indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.2. Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.2.1. Link In Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.2.2. Link Out Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.2.3. Battery Cells Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.2.4. Temperature Sensors Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.3. Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.3.1. Thermal Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.3.2. Humidity Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.3.3. Shock and Vibration Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.4. Mechanical Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5. Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

1. System Overview

The Nuvation High-Voltage BMS™ family includes several modules that operate together as a

complete system. Available modules are listed below.

Table 1. High-Voltage BMS Modules

Model Module Name

NUV100-SC Nuvation BMS™ High-Voltage Stack Controller

NUV100-PI-HE Nuvation BMS™ High-Voltage Power Interface

NUV100-CI-12 Nuvation BMS™ High-Voltage Cell Interface - 12 channel

NUV100-CI-16 Nuvation BMS™ High-Voltage Cell Interface - 16 channel

NUV100-CI-4M12 Nuvation BMS™ High-Voltage Cell Interface - 12V 4 channel

Generally, a single High-Voltage BMS system uses 1 Stack Controller, 1 Power Interface, and 1 or

more Cell Interfaces. An example configuration is shown in Nuvation High-Voltage BMS™ System

Overview

Figure 1. Nuvation High-Voltage BMS™ System Overview

NUV100 Datasheet - 2018-10-08, Rev. 2.0

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2. Nuvation BMS™ High-Voltage Stack Controller

2.1. Hardware Overview

Nuvation BMS™ High-Voltage Stack Controller module contains the central MCU which handles all

the processes and decision making required by Nuvation High-Voltage BMS™. The external

interfaces to this module are:

• 10/100 Base-T Ethernet RJ45 jack

• Isolated CAN 2.0 port

• RS-485 (Modbus) connector

• Four (4) opto-isolated digital outputs

• Four (4) opto-isolated digital inputs

• Link Bus connector

• Stack Bus connector

• Three (3) Indicator LEDs

Stack Controller does not have high-voltage connectors and does not connect to any battery

stack-referenced signals, making it safe to handle and connect to external equipment.

The following subsections describe the external interfaces in more detail. For wiring/pin-out

information, please refer to the Nuvation High-Voltage BMS™ Installation Guide.

2.1.1. Ethernet

The Ethernet jack is a standard RJ45 Cat5e rated jack. This interface is used as the primary

means of connecting an external system to the BMS to configure the operating parameters and

observe the status. It is also used as a means of controlling an external battery charger/inverter

and communicating with the vehicle central controller, grid-attached site controller, etc. The two

LEDs on the Ethernet jack indicate link status (green LED) and network activity (yellow LED).

2.1.2. CAN 485

The CAN 485 connector is a 12-pin Micro-Fit 3.0™ Molex connector. This interface provides an

isolated CAN 2.0 port as well as a non-isolated RS-485 (Modbus) port. This interface can be used

to control an external battery charger/inverter and communicating with the external system

(vehicle central controller, grid-attached controller, etc.)

2.1.3. GPIO-Out

The GPIO-Out connector is a 10-pin Micro-Fit 3.0™ Molex connector. This interface provides four

(4) isolated outputs (output of a solid-state relay) to allow an external system to receive digital

input from the Stack Controller. The functionality of this interface is configured by the end-user to

match their needs.

2.1.4. GPIO-In

The GPIO-In connector is an 8-pin Micro-Fit 3.0™ Molex connector. This interface provides four (4)

isolated inputs (cathode of an optocoupler) to allow an external system to send digital output to

the Stack Controller. The functionality of this interface is configured by the end user to match their

needs.


2

2.1.5. Link Out

The Link Out connector is a 4-pin Micro-Fit 3.0™ Molex connector. This interface is used to connect

the Stack Controller to the string of one or more Cell Interface modules. The Link In connector on

the Cell Interface monitoring the lowest-potential cell in the series battery stack is connected to

this connector via a Link Bus cable. The Link Out connector also provides operating power to the

Cell Interface modules.

2.1.6. Stack Bus

The Stack Bus connector is a 6-pin Mini-Fit® Jr. Molex connector. This interface is used to connect

the Power Interface to the Stack Controller. The Stack Controller is powered from the Stack Bus.

2.1.7. Indicator LEDs

The three (3) LEDs are used by the Stack Controller to indicate health and functional status to the

user. All LEDs are controlled by the central MCU. The Power LED indicates the MCU is operational,

the Activity LED indicates the MCU is processing data and the Fault LED indicates that Nuvation

BMS has detected a Fault.


3

2.2. Operating Limits

This section states the operating limits of the Stack Controller.

Exceeding the maximum ratings will damage the module.

2.2.1. Stack Bus Specifications

Symbol Parameter Conditions Min Typ Max Units

+VSYS Input Voltage 5.6 24 34 Vdc

Input Current +VSYS =24Vdc

0.042 - 1.3 Adc

Rterm Termination resistancetolerance

118.8 120 121.2 Ω

Power rating - - 0.125 W

StackbusP Dominant Output 2.45 - 3.3 Vdc

Recessive Output - 2.3 - Vdc

Output Current 10 - 50 mAdc

Output Signal Rise Time 35 - 135 ns

Output Signal Fall Time 35 - 135 ns

StackbusN Dominant Output 0.5 - 1.25 Vdc





2.2.2. Link Bus Specifications


+VBUS Output Voltage - +VSYS - Vdc

Output Current +VBUS =24Vdc

- - 1.26 Adc

IP_LINK Output Current - - 20 mAdc

IN_LINK Output Current - - 20 mAdc

2.2.3. USB Specifications


+5V_USB USB Current - - 500 mAdc

USB_Data USB supported datarates 1.0 - 2.0

2.2.4. Ethernet Specifications


ETH_Protocol Ethernet data speeds 10 - 100 Base-T

ETH_Connector Ethernet jack rating - Cat5e -


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2.2.5. GPIO-Out Specifications


Vmax Open Blocking Voltage Between *_Aand *_B, orbetween *_Band *_A

- - 60 Vdc

Imax Closed Maximum Curent Between *_Aand *_B, orbetween *_Band *_A

- - 400 mAdc

Ron Closed-State Resistance Between *_Aand *_B, orbetween *_Band *_A

- - 2 Ω

2.2.6. GPIO-In Specifications


Turn-On Turn On Threshold Voltage 0 - 1.4 Vdc

Turn-On Threshold Current 1.6 - - mAdc

Turn-Off Turn-Off Threshold Voltage 3 - 5 Vdc

Turn-Off Threshold Current - 1 - mAdc

Vmax Off Voltage Iin = 0mA - - 5 Vdc

Imax On Current Vin = 0V - - 12 mAdc

2.2.7. CAN Specifications


+VCAN Input Voltage 5.5 12 30 Vdc

Input Current +VCAN =12Vdc

- 52 73 mAdc


118.8 120 121.2 Ω


CAN_P Dominant Output 2.9 3.5 4.5 Vdc

Recessive Output 2 2.3 3 Vdc


Output Signal Rise Time - 20 50 ns

Output Signal Fall Time - 20 50 ns

CAN_N Dominant Output 0.8 1.2 1.5 Vdc

Recessive Output 2 2.3 3 Vdc


Output Signal Rise Time 20 50 ns

Output Signal Fall Time 20 50 ns

Isolation Rated Isolation - - 2500 Vrms


5

2.2.8. Modbus Specifications


+VMOD Output Voltage - +VSYS - Vdc

Output Current +VMOD =24Vdc

- - 1 Adc


148.5 150 151.5 Ω


|Vod| Driver differential output 1.5 2 - V

Io Output current -60 - 60 mA

tr Output Signal Rise Time 0.3 0.7 1.2 us

tf Output Signal Fall Time 0.3 0.7 1.2 us

2.3. Environmental Conditions

2.3.1. Thermal Specifications


Ta Operating Temperature -10 25 60 °C

Storage Temperature -10 25 60 °C

2.3.2. Humidity Specifications


RH Operational RH 5 - 85 %

Storage RH 5 - 85 %

2.3.3. Shock and Vibration Specifications


Vertical Vertical shock/vibration - - 1 m/s2

Longitudinal Longitudinal shock/vibration - - 1 m/s2

Transverse Transverse shock/vibration - - 1 m/s2

The Stack Controller meets industry standards CISPR 22 Class A and IEC/EN 61000-4-2 for

EMC/EMI and ESD respectively. All components are EU RoHS/China RoHS compliant.


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2.4. Mechanical Overview

The overall dimensions of the Stack Controller are 104.4mm X 121.58mm X 40.6mm.

It comes standard with DIN clips that enable the Stack Controller module to be securely mounted

to EN50022-compliant DIN rails. The clips add an extra 19.6mm to the overall width of the Stack

Controller module, bringing it from 104.4mm to 124mm. The clips also hold the module

approximately 7mm away from the inside lip of the DIN rail.

Extra space should be provided around the module to allow for easy installation/maintenance.

The Stack Controller weighs approximately 525g.

Figure 2. Mechanical Drawing of Stack Controller


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3. Nuvation BMS™ High-Voltage Power Interface


Nuvation BMS™ High-Voltage Power Interface contains a redundant MCU which handles all the

processes and decision-making required by Nuvation BMS to control the high-current contactors.

The external interfaces to this module are:

• Four (4) high-current contactor coil drivers

• Nuvation BMS Interlock input

• External Power input

• Stack Voltage input

• Current Shunt input

• Stack Bus connector

• Three (3) Indicator LEDs

• Reset push-button

The Power Interface has high-voltage connectors and connects to battery stack-referenced signals.

Safety precautions are required to handle and connect cables into this module.



3.1.1. Contactors

The Contactor connector is a 12-pin Mini-Fit® Jr. Molex connector. This interface is used to provide

or select contactor coil operating power, either from an external power supply (40V max), or from

a loop-back connection from the BMS internal 24V (nominal) source.

The Contactors connector also connects to up to four (4) external contactor coils. Each output is

capable of sourcing a maximum of 2.8A continuously. If coil operating power is provided from an

external power source, the sum of all four output currents must not exceed 5A continuous. If coil

operating power is provided from the internal power source, the sum of all four output currents

must not exceed 2.8A or 2.9A minus 31.7mA per Cell Interface connected in the system,

whichever is lower.

Coil high-side drive and return outputs are provided at the connector. The return is referenced to

the Power Interface chassis. Contactor coil back-EMF is internally clamped at 40V.

3.1.2. Interlock

The Interlock connector is a 3-pin Micro-Fit 3.0™ Molex connector. This interface is used as a

means of selecting the high-current contactor behavior. By closing external contacts (or by

attaching a permanent jumper link) connected to selected pin pairs on the Interlock connector,

energizing of the contactors is done under the BMS software control only, or through the BMS

software control qualified with a redundant hardware-based fault detection signal.

If no connection is made to the Interlock connector (all connector pins open), the external

contactors cannot be energized.


8

3.1.3. External Power

The External Power connector is a 2-pin Mini-Fit® Jr. Molex connector. This interface is used to

supply AC or DC power to Nuvation BMS. The external power supply must be isolated from the

battery stack and chassis ground.

3.1.4. Stack Power

The Stack Power connector is a 3-pin Mini-Fit® Jr. Molex connector. A single pin of this interface is

used to connect the Power Interface to the most positive end of the stack to facilitate overall stack

voltage measurement.

3.1.5. Current Shunt

The Current Shunt connector is a 4-pin Mini-Fit® Jr. Molex connector. This interface is used to

connect the Power Interface to a current shunt at the most negative end of the stack, for stack

charge and discharge current measurement as well as to facilitate overall stack voltage

measurement.

Full stack potential exists between the Stack Power and the Current Shunt

connectors. Potentially dangerous voltages may also be present between either or

both of these connectors and earth or chassis ground, including the Power

Interface and Stack Controller enclosures, if provided. Appropriate safety

precautions must be observed.

3.1.6. Thermistor

The Thermistor connector is a 2-pin Micro-Fit 3.0™ Molex connector. The thermistor must be

electrical isolated from the battery stack. Contact Nuvation Energy for support if a thermal

compensated current shunt is desired for your specific application.

Nuvation Energy can be contacted via [email protected].

3.1.7. Stack Bus

The Stack Bus connector is a 6-pin Mini-Fit® Jr. Molex connector. This interface is used to connect

the Power Interface to the Stack Controller. The Power Interface supplies power to the Stack

Controller via the Stack Bus.


The three (3) LEDs are used by the Power Interface to indicate health and functional status to the

user. All LEDs are controlled by the redundant MCU. The Power LED indicates that the MCU is

operational, the Activity LED indicates the MCU is processing data and the Fault LED indicates

Nuvation BMS has detected a Fault.

3.1.9. Reset Push-Button

The reset push-button is accessible through a small hole in the enclosure (if provided). It resets

the Power Interface’s redundant MCU and cycles power on the Stack Bus, thereby resetting the

Stack Controller and all Link Bus powered Cell Interfaces. The button needs to be held for 0.5s to

issue the reset.


9

mailto:[email protected]


This section states the operating limits of the Power Interface.


3.2.1. External Power Specifications


+VIN Input DC Voltage 13 24 34 Vdc

Input AC Voltage 16 20 24 Vac

Input DC Current +VIN = 24Vdc - - 3.5 Adc

Input AC Current +VIN = 24Vac - - 5.5 Aac

Input Isolation fromChassis/COM

60 - - Vrms

3.2.2. Stack Bus Specifications


+VSYS Output Voltage 13 24 34 Vdc

Output Current +VSYS =24Vdc

- - 1.3 Adc


118.8 120 121.2 Ω


StackbusP Dominant Output 2.45 - 3.3 Vdc





StackbusN Dominant Output 0.5 - 1.25 Vdc





3.2.3. Contactors Specifications


10


+VCOIL External Coil Power SupplyInput

5 24 40 Vdc=======

+VCOIL External CoilPower SupplyInput

5 24 40

Vdc External CoilPowerSupplyContinuousCurrent

+VCOIL =24Vdc

- -

2.8 Adc External CoilPowerSupplyPulseCurrent(<300µs)

+VCOIL =24Vdc

- -

20 Adc +VINT Internal CoilPowerSupplyVoltage

- +VSYS

- Vdc Internal CoilPowerSupplyCurrent

- -

2.8 Adc COIL(n) CoilDriverOutputVoltage

- +VCOIL

- Vdc CoilDriverOutputCurrent

+VCOIL =24Vdc

- -

3.2.4. Interlock Specifications


OVERRIDE OverRide Voltage Output +VCOIL =24Vdc

- 5 - Vdc

OverRide Current Output +VCOIL =24Vdc

49.5 50 50.5 mAdc


11


DRV Drv Voltage Output +VCOIL =24Vdc

- 5 - Vdc

Drv Current Output +VCOIL =24Vdc

49.5 50 50.5 mAdc

3.2.5. Current Shunt Specifications


VSHUNT_REF Reference Output Voltage - 1.25 - Vdc

Reference Output Current -250 0 250 µAdc

Vdiff Differential voltage betweenVSHUNT_BAT andVSHUNT_LOAD

-1 0 1 Vdc

Vmes Measurement resolution - 143 - nVdc

3.2.6. Thermistor Specifications


+VTHERM Thermistor Output Voltage - 2.5 - Vdc

Thermistor Output Current +VTHERM =2.5Vdc

- - 250 µA

Rt Thermistor Resistance at 25°C - 10 - kΩ









Storage RH 5 - 85 %






Nuvation BMS™ High-Voltage Power Interface meets industry standards CISPR 22 Class A and

IEC/EN 61000-4-2 for EMC/EMI and ESD respectively. The Power Interface has been designed to

meet EN 60950 high voltage creepage/clearance distances to prevent arching to the metal


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enclosure. All components are EU RoHS/China RoHS compliant.


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The overall dimensions of the Power Interface are 174.40mm X 121.58mm X 48.60mm.

It comes standard with DIN clips that enable the Power Interface module to be securely mounted

to EN50022-compliant DIN rails. The clips add an extra 19.6mm to the overall width of the Power

Interface, bringing it from 174.40mm to 194mm. The clips also hold the module approximately

7mm away from the inside lip of the DIN rail.


The Power Interface can contain high-voltage signals. It is possible to have

signals 1250Vdc away from earth ground. Care must be taken when mounting the

PCB into a metal enclosure to ensure the metal walls remain the correct distance

from the exposed conductor on the PCB. Using the 1250Vdc as an example, the

metal walls must be at least 4.2mm from the nearest exposed conductor and not

touch the PCB or any component on the PCB, including the connector housings.

The Power Interface weighs approximately 915g.

Figure 3. Mechanical Drawing of Power Interface


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4. Nuvation BMS™ High-Voltage Cell Interface


The Nuvation BMS™ High-Voltage Cell Interface module contains interface and measurement

circuitry which converts the cell voltage and temperature to a digital value read, and to relay that

data to the Stack Controller module. It also enables/disables cell balancing as required. The

external interfaces to this module are:

• Battery Cells connector

• Temperature Sensors connector

• Two (2) Link Bus connectors

• Two (2) Indicator LEDs

The CI has high-voltage connectors and connects to battery stack-referenced signals. Safety

precautions are required to handle and connect cables into this module.

There are three models of the Cell Interface.

• The NUV100-CI-12, Cell Interface - 12 channel can monitor up to 12 series-connected cells

• The NUV100-CI-16, Cell Interface - 16 channel can monitor up to 16 series-connected cells

• The NUV100-CI-4M12, Cell Interface - 12V 4 channel can monitor up to 4 series-connected

12V lead-acid cells



4.1.1. Battery Cells

The Battery Cells connector is an 18-pin Micro-Fit 3.0™ Molex connector. This interface is used to

connect the battery cell voltage sense wires to the module’s measurement and balancing circuitry.

If cell balancing is used, these wires carry the balancing current, and should be sized

appropriately. Note that balancing is not supported in the NUV100-CI-4M12 variant. For each Cell

Interface module used, the cells connected to it are referenced to its CELL0 input, which is

connected to the negative end of the most negative connected cell.

When not powering the Cell Interface module from the Link Bus:

• In the NUV100-CI-12 variant, a minimum of 11V must be present between the CELL0 input and

the most positive connected cell

• In the NUV100-CI-16 and NUV100-CI-4M12 variants, cells are connected as two groups; a

minimum of 11V must be present between the most negative and most positive for each

group.

There is no minimum cell voltage when powering the Cell Interface from the Link Bus.

4.1.2. Temperature Sensors

The Temperature Sensors connector is a 16-pin Micro-Fit 3.0™ Molex connector. This interface is

used to connect up to eight 10kΩ NTC thermistors to the Cell Interface module. The sensors are

referenced to the module’s CELL0 input, so care must be taken to ensure that they are electrically


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isolated from any common or ground potential, and from all other cell voltage terminals of the

local Cell Interface module and of any other Cell Interface modules in the particular installation.

These sensors are used by Nuvation BMS to sense over and under temperature conditions.

4.1.3. Link In

The Link In connector is a 4-pin Micro-Fit 3.0™ Molex connector. This interface is used to connect

the Cell Interface module to the next lower-potential Cell Interface module or to the Stack

Controller if the Cell Interface is the lowest potential Cell Interface in the chain. A Link Bus cable is

used to connect the Link In connector to either the Link Out connector on the next lower-potential

Cell Interface or to the Link Out connector on the Stack Controller. The Cell Interface also accepts

power from this connector to power itself and any higher-potential Cell Interfaces connected to

the Link Out connector.

4.1.4. Link Out

The Link Out connector is a 4-pin Micro-Fit 3.0™ Molex connector. This interface is used to provide

the data channel and power source to higher-potential Cell Interface modules in the chain. The

Link Out connector is to be unconnected if the Cell Interface is the highest potential Cell Interface

in the chain.


The two (2) LEDs are used by the Cell Interface to provide a rudimentary indication of the

functional status of the module. The Activity LED indicates that the Cell Interface module has

received a communication packet from the Stack Controller via the Link Bus, and the Fault LED

indicates Nuvation BMS has detected a Fault.


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This section states the operating limits of the Cell Interface.


4.2.1. Link In Specifications


+VBUS Input Voltage 9 24 60 Vdc

Input Current,CI-12

+VBUS = 24Vdc, Link Outdisconnected

- - 25.5 mAdc

Input Current,CI-16

+VBUS = 24Vdc, Link Outdisconnected

- - 31.7 mAdc



4.2.2. Link Out Specifications


+VBUS Output Voltage - +VBUS - Vdc

Output Current +VBUS =24Vdc

- - 31.7 mAdc/CI-16



4.2.3. Battery Cells Specifications


C(n) - C(n-1) Input Cell Voltage Range +VBUS =24Vdc

0 - 5 Vdc

Vsum Voltage between C0 and C12 CI-12, +VBUS= 0Vdc

11 - 60 Vdc

Voltage between C0 and C8 CI-16, +VBUS= 0Vdc

11 - 40 Vdc

Voltage between C8 and C16 CI-16, +VBUS= 0Vdc

11 - 40 Vdc

Voltage between C0 and C2 CI-4M12,+VBUS = 0Vdc

11 - 40 Vdc

Voltage between C2 and C4 CI-4M12,+VBUS = 0Vdc

11 - 40 Vdc

TME Total Measurement Error CI-12, CI-16,+VBUS =24Vdc

±0.1 ±1.2 ±1.6 mVdc

Total Measurement Error CI-4M12,+VBUS =24Vdc

±27.0 ±35.1 ±41.7 mVdc

I(n) Cell Balancing Current (only forCI-12 and CI-16 )

C(n) - C(n-1)= 4Vdc

304 307 310 mAdc


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4.2.4. Temperature Sensors Specifications


I(n) Output Current to TemperatureSensor

- - 300 uA

Rt(n) Temperature Sensor Resistanceat 25°C

- 10 - kΩ

T(n) Input Temperature SensorVoltage Range

Cell 0 = 0V 0 - 3 V









Storage RH 5 - 85 %






Nuvation BMS™ High-Voltage Cell Interface has also met industry standards CISPR 22 Class A and

IEC/EN 61000-4-2 for EMC/EMI and ESD respectively. The Cell Interface has been designed to

meet EN 60950 high voltage creepage/clearance distances to prevent arcing to the metal

enclosure. All components are EU RoHS/China RoHS compliant.


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The overall dimensions of the Cell Interface are 104.4mm X 121.58mm X 40.6mm.

The Cell Interface comes standard in a bulkhead-mountable enclosure. The enclosure has five

metal walls, leaving the bottom of the unit fully exposed. It must be mounted to a metal bulkhead

panel so that the panel will become the missing side. The module will produce up to 24W (32W if

it is the NUV100-CI-16 model) during cell balancing. A portion of this heat will be transferred to

the bulkhead.


The Cell Interface is also available in an enclosure with DIN clips that enable the Cell Interface

module to be securely mounted to EN50022-compliant DIN rails. The clips add an extra 19.6mm

to the overall width of the Cell Interface module, bringing it from 104.4mm to 124mm. The clips

also hold the module approximately 7mm away from the inside lip of the DIN rail.

The Cell Interface can contain high-voltage signals, with the maximum voltage

possibly reaching as high as 1250Vdc. Care must be taken when mounting the

PCB into a metal enclosure to ensure that the metal walls remain a safe distance

from the exposed conductor on the PCB.

Using the 1250Vdc as an example, the metal walls must be at least 4.2mm from

the nearest exposed conductor and not touch the PCB or any component on the

PCB, including the connector housings.

A Cell Interface with DIN mountable enclosure weighs approximately 540g and a Cell Interface

with bulkhead mountable enclosure weighs approximately 450g.


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Figure 4. Mechanical Drawing of Cell Interface with DIN Enclosure

Figure 5. Mechanical Drawing of Cell Interface with Bulkhead Enclosure


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5. Ordering Information

Model Number Description

Stack Controller

NUV100-SC Nuvation BMS™ High-Voltage Stack Controller, DIN Mount

NUV100-SC-U Nuvation BMS™ High-Voltage Stack Controller, PCB assembly only (noenclosure)

Power Interface

NUV100-PI-HE Nuvation BMS™ High-Voltage Power Interface, DIN Mount

NUV100-PI-HE-U Nuvation BMS™ High-Voltage Power Interface, PCB assembly only (noenclosure)

Cell Interface

NUV100-CI-12 Nuvation BMS™ High-Voltage Cell Interface - 12 channel, DIN Mount

NUV100-CI-12-1 Nuvation BMS™ High-Voltage Cell Interface - 12 channel, Bulkhead

NUV100-CI-12-U Nuvation BMS™ High-Voltage Cell Interface - 12 channel, PCB assemblyonly (no enclosure)

NUV100-CI-16 Nuvation BMS™ High-Voltage Cell Interface - 16 channel, DIN Mount

NUV100-CI-16-1 Nuvation BMS™ High-Voltage Cell Interface - 16 channel, Bulkhead

NUV100-CI-16-U Nuvation BMS™ High-Voltage Cell Interface - 16 channel, PCB assemblyonly (no enclosure)

NUV100-CI-4M12 Nuvation BMS™ High-Voltage Cell Interface - 12V 4 channel, DIN Mount

NUV100-CI-4M12-1 Nuvation BMS™ High-Voltage Cell Interface - 12V 4 channel, Bulkhead

NUV100-CI-4M12-U Nuvation BMS™ High-Voltage Cell Interface - 12V 4 channel, PCB assemblyonly (no enclosure)

Customer Starter Kits

A Customer Starter Kit includes the Stack Controller, Power Interface and Cell

Interface modules with enclosures and a cable kit to get you started.

Please visit https://nstore.nuvationenergy.com for more details.


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https://nstore.nuvationenergy.com

Nuvation BMS™, Nuvation High-Voltage BMS™, Nuvation Low-Voltage BMS™ and Nuvation BMS™

Grid Battery Controller are trademarks of Nuvation Energy. From time to time Nuvation Energy

will make updates to the Nuvation BMS™ in response to changes in available technologies, client

requests, emerging energy storage standards and other industry requirements. The product

specifications in this document therefore, are subject to change without notice.

© Copyright 2018, Nuvation Energy


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Documents

NUV100 Datasheet: Nuvation High-Voltage BMS™...Generally, a single High-Voltage BMS system uses 1 Stack Controller, 1 Power Interface, and 1 or more Cell Interfaces. An example configuration