Toshiba Infrastructure Systems & Solutions Corporation has developed an on-board battery system that combines Toshiba's SCiB™ rechargeable lithium-ion batteries and a vehicle power supply system (SIV). Tobu Railway Co., Ltd. (Tobu Railway) has adopted the system for new rolling stock for the TOBU URBAN PARK Line, and plans its gradual roll-out from FY2024 as an initiative to reduce CO2 emissions.
Storing the regenerative energy generated when the train's brakes are applied, and using this energy as part of the auxiliary power for air conditioning, etc. contributes to energy-saving operations and a reduction in CO2. Furthermore, in the event of an emergency, such as equipment failure, power is supplied to the brake compressor and other parts required for driving operations to ensure diffuseness.
Toshiba’s rechargeable lithium-ion battery is used for the storage battery. SCiB™ has excellent characteristics, including high safety, long life with charges and discharges at over 20,000 times, and low-temperature operations that can withstand an environment below -30oC. In terms of safety, in particular, its structure is such that abnormal heat generation or a fire outbreak is highly unlikely even if external pressure is applied and an internal short circuit occurs.
In 2014, Toshiba Infrastructure Systems & Solutions Corporation delivered a Traction Energy Storage System (TESS) using SCiB™ for the TOBU URBAN PARK Line, which was the first time that an on-board system using SCiB™ was combined with TESS.
Toshiba Infrastructure Systems & Solutions Corporation will continue to develop equipment and systems for railroad vehicles, and in addition to pursuing safety and convenience, will co-create carbon neutrality in accordance with the concepts of individual railroad operators.