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BMS Grid Battery

Nuvation BMS Grid Battery Controller Installation Manual

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Installation Guide
Nuvation BMS™ Grid Battery Controller
2018-10-08, Rev. 2.0
© Copyright 2018, Nuvation Energy
Table of Contents
Important Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê1
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê2
2. System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê3
3. Grid Battery Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê5
3.3.1. DC Power Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ê7
Important Safety Information
The content in this document must be followed in order to ensure safe operation of Nuvation BMS™.
Do NOT energize the system until all connections to the Cell Interface and Power Interface modules have been made.
Insulated handling is required of any connector carrying potentials over 600Vdc relative to chassis.
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™ is an enterprise-grade battery management system with features that extend battery life, ensuring pack-level safety, data-analytics, and remote management.
The Nuvation BMS™ Grid Battery Controller aggregates information and provides a unified interface to a large multi-stack battery system.
You can take advantage of the highly configurable browser-based user interface and custom-tune Nuvation BMS™ Grid Battery Controller to your specific target application.
1.1. About this Guide
This Installation Guide: Nuvation BMS™ Grid Battery Controller provides instructions to connect your Nuvation BMS™ Grid Battery Controller to your Nuvation BMS™.
Once you have successfully completed the installation process, please follow instructions in the Operator Interface Manual (Multi-Stack) for accessing and configuring the Multi-Stack Operator Interface.
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2. System Overview
Nuvation BMS™ Grid Battery Controller aggregates information in a multi-stack energy storage system and provides a unified interface for monitoring, updating and controlling the individual stacks and even external hardware. Each connected stack is managed by Nuvation BMS™ High­Voltage Stack Controller or Nuvation BMS™ Low-Voltage Battery Controller.
Figure 1. Example Nuvation BMS multi-stack configuration
Depending on the system, the individual stacks will be managed by either a Nuvation High-Voltage BMS™ or a Nuvation BMS™ Low-Voltage Battery Controller.
The Grid Battery Controller aggregates information from each of the Stack Controllers or Battery Controllers in the system and provides a unified interface to the pack as a whole.
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Figure 2. Example single-stack managed by a Stack Controller and connected to a Grid Battery Controller
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3. Grid Battery Controller
3.1. Overview
Nuvation BMS™ Grid Battery Controller provides two crucial battery-level software interfaces for large, multi-stack battery applications:
1. Modbus TCP:
◦ Unified view of the entire battery conforming to open energy standards.
◦ Conforms to MESA Models: S801, S802 and S803
◦ Used directly by inverters and other grid infrastructure implementing the MESA standard
2. Web-based configuration and diagnostics:
◦ Hosts web-based tools that can be accessed from common web browsers
◦ Used to provision firmware upgrades, configure settings and view diagnostic information for
the entire battery system
A few key system-level features that are also provided are:
• System-wide statistics for voltages, temperature and currents
• Current limiting algorithms for multi-stack battery systems
• State-of-Charge algorithms for multi-stack battery systems
• NTP client for BMS time synchronization
The Grid Battery Controller uses a Linux-based operating system with special provisions in place to guarantee the performance and responsiveness required for real-time inverter control.
3.2. Mechanical Dimensions
The overall dimensions of the Grid Battery Controller are 210mm X 65mm X 140mm. It comes standard with a DIN clip, enabling it to be securely mounted to EN50022-compliant DIN rail. Extra space should be provided around the module to allow for cable connections, easy installation/maintenance and to provide adequate fanless cooling. The spatial clearance is illustrated on the restricted area diagram
The Grid Battery Controller weighs approximately 2.5kg.
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Figure 3. Grid Battery Controller DIN Clip Location
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Figure 4. Grid Battery Controller Restricted Areas
3.3. Electrical Connections
Grid Battery Controller has standard connectors excluding the DC power connector.
3.3.1. DC Power Connector
The DC power connector provides a nominal 24VDC to the Grid Battery Controller, but will tolerate an input voltage between 19.2V and 28.8V. At 24V, it consumes no more than 2.5A.
The external supply has its negative input connected to earth ground through the Grid Battery Controller’s chassis.
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Table 1. DC Power: MINI-COMBICON DSUB Connector
Phoenix Contact 1841909
Manufacturer Phoenix Contact
Housing 1841909
Housing material Polyamide UL94V-0
Circuits 3
Wire gauge range AWG16-24 stranded
Table 2. DC Power Connector Pin Assignment
Pin Connection Description Connected to Device
1 GND External Power Supply Input Negative Connect to external 24Vdc
power supply negative
2 No Connect Not Connected No Connect
3 +24V External Power Supply Input Positive Connect to external 24Vdc
power supply positive
3.4. Network Connections
The Grid Battery Controller has two ethernet ports on it’s front panel labeled ETH1 and ETH2. These ports manage two seperate network connections which are named described as the external and internal networks. The ETH2 port connects to the external network. The external network provides services such as DHCP and NTP for the Grid Battery Controller. An external contoller or integration software would communicate to the Grid Battery Controller over this network. The ETH1 port connects the Grid Battery Controller to its internal network. The internal network allows the Grid Battery Controller to connect to and communicate with the Nuvation Stack Controller for each stack in the battery pack. For more details on how to configure the network settings on these ethernet ports, refer to the Grid Battery Controller Software Reference Manual.
The external and internal networks of the Grid Battery Controller should remain seprated for the best operation of the battery pack. Excessive network traffic on the internal network can interfere with the Grid Battery Controller management of the stacks.
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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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