1. Which EMUS system to choose for my battery system?

There are different types of EMUS BMS configurations, which should be chosen according to the application’s and

battery system’s requirements. EMUS can fit practically all the most common battery systems topologies used worldwide, that’s why we claim EMUS as the most modular system in BMS industry. Let’s see what is available and how it differs.

• BMS Mini: all-in-one unit for a single battery pack of 6-16 cells in series (battery pack voltage 12.0 V – 72.8 V), with MOSFET switches, integrated pre-charge circuitry, and two current sensors. Connectivity to PC via USB port, wireless smartphone connectivity with an EMUS App, 500mA passive balancing, CAN communication, 100A continuous charge/discharge current (peak 250A). See Datasheet for more details Mini 3 Datasheet

• G1 Distributed Regular: For simple cases, when battery cells are connected in series as one battery pack (max. 40-60 cells in series), usually used for prismatic cells or paralleled cylindrical groups.
  Voltage range 12V – ~240V, discharge current up to ~1000A, or 2500A with Isabellenhuette IVT-S series current sensor.

 

• G1 Distributed Grouped: Battery cells are grouped into blocks (recommended up to 60 cells in series per block) and each block is connected with CAN Cell Group Modules (CGM unit). Then all (recommended max. 24) CGM units (or 24 packs) are connected via CANbus line to Control Unit.
  Voltage range 12V – ~1300V, discharge current up to ~1000A, or 2500A with Isabellenhuette IVT-S series current sensor.

 

• G1 CCGM Centralized: for applications when batteries are split into separate blocks up to 16 cells connected in series or/and parallel (recommended max. 24 CCGM units in total), recommended for cells with capacities up to ~100Ah.
  Voltage range 12V – ~1300V, discharge current up to ~1000A, or 2500A with Isabellenhuette IVT-S series current sensor.

 

• G1 Distributed Master-Slave: EMUS G1 Master-Slave BMS topology is used to build large Lithium-ion battery systems mostly in electric energy storage (EES) applications where high power, capacity, and modularity are required. Such BMS configuration not only allows to build large ESS system, but also provides redundancy features, for example, if one of the battery strings/subsystems runs out of operation, other battery strings can operate and provide power continuously. Up to 6MWh power energy storage systems can be built with off-the-shelf products and larger systems can be made with customized solutions.

 

EMUS G1 Master-Slave system is a combination of several commonly used EMUS G1 Distributed Grouped or Centralized CCGM subsystems. Simply said, up to 18 strings, with each string having its own G1 Control Unit can be interconnected into one large system. From all of the 18 Control Units, one of them is automatically designated as a „Master CU“ and the remaining Control units as „Slave CU“.  In such a way „Master CU“ is gathering information from „Slave CU“ strings and commands operational logic, as well communicates with external devices such as chargers, inverters, VCU, PLC, etc. All system configuration is easily made on EMUS Control Panel, which is provided free of charge to EMUS customers.

This system runs on EMUS proprietary CAN communication protocol using a special item for efficient CAN traffic distribution called „CAN filter“. CAN filter is filtering internal system‘s CAN traffic from external CAN traffic, thus making it stable and reliable.