Traction Battery System
Toshiba's rechargeable battery SCiB™ widens railway transportation applications.
Toshiba Lithium-ion battery, SCiB™ is an essential component to realize a next-generation railway system. Toshiba contributes to develop a smart battery that ensures long life, safety, and eco-friendly system.
SCiB™ is utilized as a battery for storing energy regenerated from trains, and also as an emergency battery for supplying electric power to permit evacuation operation if the power supply is cut off. The battery system is utilized for the hybrid rolling stocks to reduce the total energy consumption of the rolling stock system compared to conventional systems.
Benefits & Value
- Energy saving by using regenerative energy
- Higher fuel economy and reduced NOx emissions for rolling stock with a diesel engine
- Reduced noise by using the battery power supply instead of engines.
- Charge and discharge performance at low temperature.
- Long life with 10000 charge and discharge cycles*.
SCiB™ Battery System Basic Dimentions
SCiB™ Battery System Basic Specifications
|Nominal Weight||1850 kg (Approx.)|
|Nominal Capacity||60 kWh at three banks|
|Nominal Voltage||500 V DC|
|Cooling System||Forced-air cooling|
|Charge and Discharge Cycles||10000 cycles*|
|Cell||SCiB™ 20 Ah|
|Safety system||Battery Management System with circuit breakers, Service Disconnect between series batteries|
|Compliant Standards||Complied with related IEC and EN standards|
|Installation||Roof mounting or Under floormounting|
- * Results of cell level tests under certain conditions. Not a guaranteed performance.
System Configuration Examples
Series Hybrid system
The battery drive consists of the SCiB™ providing electric power to the traction system as well as the APS.
APS:Auxiliary power supply system
This mode is the common mode for the diesel-electric systems. The engine furnishes power to the generator, which produces the electric power necessary for the traction system as well as the APS.
When the train is braking, the traction motor becomes a generator, producing electric energy. This energy is stored in the batteries and is also used by the auxiliaries.
Catenary less Hybrid train
This mode is the regular mode. The electric energy is provided by the catenary, and is used by the electric traction system, the auxiliaries and the batteries.
On a catenary-less section, the battery becomes the main electric power supply of the train. The energy is used by the traction system, as well as the auxiliaries.
When the train is braking, the traction motor becomes a generator, producing electric energy. This energy is stored in the batteries, used by the auxiliaries or sent back to the catenary.
Emergency running system
This mode is the regular mode. The electric energy is provided by the catenary, and is used by the traction system, the auxiliaries and the batteries.
In case of power disruption, electric power feeding cannot be provided anymore by the catenary. Therefore, the battery system provides the electric energy to the traction system and the auxiliaries. SCiB™ helps the train to escape from the emergency.