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SCiB™ components

Toshiba offers various components such as BMU,
main connector, current sensor and electric leakage sensor.

List of the components

Battery modules are built up into larger arrays with peripheral battery system components.
Toshiba has the following battery system components available for building battery systems.

NO Product name Function Photo
(1) Battery module (MDL) A battery module consists of 24 SCiB™ cells in a 2 parallel × 12 series configuration and it is equipped with a cell monitoring unit (CMU) to monitor and protect each cell. Battery module (MDL) photo
(2) BMU (Battery Management Unit) Monitors the temperature and cell voltage in each battery module and protects the battery if anything abnormal is detected. It also measures the current during charging and discharging, and calculates the SOC.
In addition, it notifies the upper controller with calculation and measurement data of the battery via CAN communication.
BMU (Battery Management Unit) photo
(3) Main contactor (MC) Mounted in both the positive and negative electrodes in the main circuit, the MC opens the main circuit upon command from the BMU if anything abnormal is detected. Main contactor (MC) photo
(4) Current sensor (HCT) Measures the current during charging and discharging, and sends the current value to the BMU. Current sensor (HCT) photo
(5) Service disconnect (SDC) Plug Used to switch off the main circuit, as needed when connecting or removing the battery module, or for system maintenance. Used to switch off the main circuit, as needed when connecting or removing the battery module, or for system maintenance. Service disconnect (SDC) photo
Receptacle
(6) GND control relay Relay Used to prevent malfunction of the main contactor if the control power circuit of the BMU is wired incorrectly. GND control relay photo
Receptacle
(7) Electric leakage sensor (ELS) If the upper controller sends the BMU an electric leakage detection signal (fault diagnosis signal), it opens the main contactor to detect the electric leakage. Electric leakage sensor (ELS) photo
(8) BMU connection cable Connects to the BMU connector. BMU connection cable photo
(9) Cable for fitting detection for service disconnect Used to connect the connector for detecting the fitting for service disconnect. Cable for fitting detection for service disconnect photo
(10) Current sensor connection cable Used to connect the current sensor. Current sensor connection cable photo
(11) Electric leakage sensor connection cable Used to connect to the connector for linking the main circuit with the electric leakage sensor. Electric leakage sensor connection cable photo
(12) Electric leakage sensor main circuit cable Used to connect to the connector for the control signal of the main circuit. Electric leakage sensor main circuit cable photo
(13) Termination plug (TP) Termination resistor for CAN communication Termination plug (TP) photo

Components to be prepared by the customer

(14) CMU connection cable
(Use a commercially available LAN cable)

Used for connections between battery modules (MDL) and the BMU for CAN communications.
Used for connections between battery modules (MDL) and the BMU for CAN communications.

  • MDL to MDL: RJ45 connectors on both ends.
  • CMU to MDL: Loose wires on the CMU side, RJ45 connector on the MDL side.

<Caution> Maximum length of the CAN communication cable is 40 m.

CMU connection cable (Use a commercially available LAN cable) photo

Examples of Applications of Battery System Components

Battery system components, such as the BMU, which is the core of the monitoring system, and of a variety of sensors, relays, and cables, are combined with battery modules to build up a battery system.
The number of battery modules and battery system components are determined according to the voltage and capacity of the battery system.

Battery System Block Diagram

Battery System Block Diagram image
  • (1)MDL (battery module) (2)BMU (battery management unit) (3)MC (main contactor) (4)HCT (current sensor) (5)SDC (service disconnect) (6)GND control relay (7)ELS (Electric leakage sensor) (8)BMU connector table (9)Cable for fitting detection for service disconnect (10)Current sensor connection cable (11)Electric leakage sensor connection cable (12)Electric leakage sensor main circuit cable (13)TP (termination plug) (14)LAN cable for connecting CMU
  • AVR: Automatic voltage regulator, PCS: Power Conditioner System
  • * The customer must prepare the PCS, upper controller, battery panel, battery units, and some cables.

Example of Battery System Configuration

The following are examples of applications, however the module configuration is simply determined by the desired capacity and voltage of the system.

System voltage Module series configuration Example of application
48 V system 1 Mobile base stations, forklifts
100 V system 3 DC power source
150V system 6 Household battery
200V system 8 Chargers
400V system 15 UPS
600V system 22 Solar power generators, wind power generators, railways