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  Main page » Catalogue » E-Motors, Batteries, Chargers » Charging Technology » LiFePO4 Lithium BMS Systems » EMUS BMS System » EMUS_MainUnit
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EMUS BMS - Main Control Unit 24V, Programmable Battery Management System up to 255 Cells, LiIon, LiFePO4
389,00 EUR
0.40 kg incl. 19% Tax excl. Shipping costs
Print product data sheet
Shipping time: 2-4 Days
Product No.: EMUS_MainUnit




Recent development of rechargeable battery technology allowed wider use of electric propulsion in electric vehicles, electric motorcycles, boats etc. Most popular high performance batteries are based on Lithium chemistries. Such batteries require systems to keep them in the specified usage range while being used. The Battery Management System (BMS) is required for batteries that are sensitive to their usage conditions such as current, voltage and temperature. Emus BMS is the product intended for use with LiIon, LiPO, LiFePO4 and other chemistries prismatic battery cells which operating voltages range is from 2V to 5V. Emus BMS is a distributed type of digital BMS with central Control Unit. It does the balancing of the cells by dissipating the excess energy of cells as heat which is often referred to as passive balancing.

Main Highlights

  • Support of various charging algorithms by flexible software upgrades
  • Voltage and current control of battery charger via CAN bus
  • Supported CAN charger: currently Elcon PFC series, other models implemented by software upgrade
  • Observation of every battery cell voltage and temperature
  • Control of battery cell equal charge applying shunting current
  • Gradual control of shunting current from 0 to maximum
  • Possibility to limit shunting current to specified maximum which reduces dissipated heat
  • Peak dissipated power per cell: 5W
  • Easy battery connection via one wire going between adjacent cells
  • Easy expansion of number of controlled cells
  • Maximum number of controlled cells: 255
  • Single cell voltage range: 2-5V - the best fit for LiIon, LiPo, LiFePO4 chemistries.

Specifications

BMS Type Distributed with central control unit
Cells count 2÷255
Cell type Any in 2÷5 V range (LiIon, LiPO, LiFePO4, ...) prismatic cells, other custom shapes cell modules available upon request
Battery pack voltage From 4 to 1300 V
Balancing type Dissipative
Control Unit supply voltage range 24 V
Control Unit consumption 20 mA average
Control Unit outputs maximum drive current 0,5 A
Control Unit RS232 speed 57600 bits/s 8N1
Control Unit CAN speed up to 1 Mbps
Control Unit USB speed standard Full Speed
Control Unit dimensions 95 x 50 x 30 mm
Cell Module voltage range 2÷5 V
Cell Module consumption 0,5 mA average, 8 mA peaks
Cell module shunt resistor 2,7 Ohm 5W
Cell Module maximum balancing current 1.5 A
Cell Module voltage measurement accuracy +/- 0,01V
Cell Module temperature measurement accuracy +/- 5ºC
Cell Module communication speed ~2,3 ms per cell, allows to receive 45 cells parameters information in approx. 0,1 second
Cell Module dimensions 50 x 30 x 17 mm

 Features and Functionality

Weather protection Control Unit is hermetically sealed to meet IP55 requirements. Internal electronics protected with conformal silicone coating. Cell Module's electronic parts coated with silicone conformal coating protecting circuits from moisture and dust.
Suiteable for different cell sizes Small size of the cell modules and variable length „+“ terminal wire allows installation on the prismatic cells of different sizes
Tool-less installation Cell modules can be installed without tools (only a bolt wrench is needed for cell terminals) as cell modules have spring-loaded terminals that allow reliable connection of wires by hand. Pre-cut inter-connection wires are supplied in the shipped package for quicker installation. When connected to Control Unit blinking green LEDs on Cell Modules indicate live communication and allow quick identification of problematic cell connection.
Configurable BMS has various parameters that are configurable by using convenient Emus BMS Control Panel PC software over USB connection: pre-charge, pre-heat, timeouts, cell voltages (min and max allowed, early balancing threshold, allowed disbalance, etc), currents (maximum balancing current, charge modes), cell parameter read interval, etc...
Configurable balancing current range Linear zero to max, configurable maximum balancing current – useful to define maximum balancing current and amount of heat dissipated by modules during balancing.
Cell voltage measurement Real-time bar graph on LCD or PC – useful to detect faulty cells and track battery health, or as general visualisation for advanced users.
Cell temperature measurement Real-time value on LCD and bar graph on PC – useful for controlling charger and load in high temperatures, for setting charging mode and contol of battery heater in cold weather (lithium batteries can‘t be charged below freezing point). Many other BMS systems are not suitable for use in cold environment.
Early cell balancing Balancing is done while charging, battery pack is in balance when charged – takes no additional time. Many other BMS systems start the balancing only when at least one cell is fully charged and overall charging time is drastically increased (in terms of hours).
Digital one-wire interface between cells Allows neat and robust installation with lowest count of wires that could break
Forward Error Correction algorithm Increases data ransfer robustness and drastically reduces possibility of faulty data – data is corrected by Control Unit, even if it arrives with errors caused by high EMI levels.
USB interface USB 2.0 compatible, with free, intuitive and easy to use, good quality Emus BMS Control Panel windows application.
RS-232 interface Periodically sending the working status and parameters which can be received by LCD display or other device. Parameters output format specification is available upon request.
CAN interface Used for controlling CAN-capable charger and broadcasting working status and parameters to other devices that could be connected on CAN bus. Broadcasted parameters specification is available upon request. Other peripherals support is possible after firmware upgrade.
CAN-equipped charger control Precise charging process control by setting required charging voltage and current and monitoring actual values. Currently chargers produced by www.hztiecheng.com are supported. Additional charger models can be added by software upgrade.
Simple charger control Ordinary charger may be conveniently used as BMS detects charger's plug connection to AC mains outlet via optional isolated charger sensing solid state relay. Charger switched on and off via same solid state relay.
 
Contents:
-EMUS BMS central unit for 24V supply voltage
-Starter Kit  ( Cable-Set for central unit )

More Information - EMUS BMS Web Wiki

EMUS BMS - User Manual.pdf





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Allows Tablet PC and smartphones (runing on Windows Mobile or Android OS) to be used as Display unit for EMUS BMS, range - up to 10 meters.


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EMUS BMS - Cell Unit_A, balancing, monitoring 3A

Vaccur Cell voltage sensing accuracy within V range nom ±5mV max ±10mV
ICC Cell module operating current stand by 0.2mA,  active 2mA
Balancing current  3A


EMUS BMS - Cell Unit_B, balancing, monitoring 3A

Vaccur Cell voltage sensing accuracy within V range nom ±5mV max ±10mV
ICC Cell module operating current stand by 0.2mA,  active 2mA
Balancing current  3A


EMUS BMS - Bluetooth adapter 12V

Allows Tablet PC and smartphones (runing on Windows Mobile or Android OS) to be used as Display unit for EMUS BMS, range - up to 10 meters.


EMUS BMS - Current Hall Sensor, 0-100A, 100-1000A

EMUS BMS - Solid State Relay, SSR, AC110-230V, 40A, AC sense identification LED, Power on LED

To use  the EMUS BMS with a charger without CAN-bus interface. 

Emus BMS Solid State Relay is an electronic switch, designed to toggle AC power to any basic charging device that does not feature current control capability, providing the main controller the means to limit the charging current.
AC connection sensing feature allows the main controller to acknowledge the presence of charging device, and to commence charging. A pair of LEDs provide indication of relay state and AC connection status

Specifications:
  • Galvanic isolation 3.7kV
  •     (AC Sence output);
  • Operating voltages:
  •     230 VAC on AC cables;
  •     9 to 16 VDC on signal wires;
  • Dimensions: 100x80x62 mm;
  • Wire lenghts:
  •     ACIN 1.5m; ACOUT 0.5m;
  •     Signal cable 1.5m;
  • Mounting holes: M5


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