Saft Releases first onboard Li-ion battery system for regenerative traction applications

19th September 2012
Source: Saft Group
Posted By : ES Admin
Saft is launching at Innotrans its new modular Lithium-ion onboard battery system. Visitors to Booth 15.1/226 can speak to Saft’s experts about the use of Li-ion energy storage to optimize the reliability and energy efficiency of rail networks by providing autonomous and hybrid traction for catenary-free operation and regenerative braking.
Effective onboard energy storage can contribute to the energy-efficiency of rail networks by providing operators with the potential to save up to 30 percent of their energy costs; it can also make a significant contribution to minimizing their impact on the environment by reducing emissions. In addition, the potential elimination of overhead catenaries on large sections of track reduces both infrastructure construction and maintenance costs.

The Saft Li-ion battery can be directly integrated into a wide range of rolling stock including light rail systems such as trams, street cars and tram-trains, electric multiple units, diesel locomotives and automated people movers. Early discussions with OEMs and operators have generated considerable interest in the adoption of onboard Li-ion energy storage and Saft has already received a number of firm orders.

The advantage of Saft’s advanced Li-ion battery technology for railway OEMs and operators is that it offers both high power and energy density combined with a high rate of charge and discharge that ensures maximum system availability. The high reliability of Li-ion batteries is a fundamental benefit that this technology brings. For example, the onboard battery can provide sufficient autonomous traction power for a hybrid vehicle to continue its journey to the next station. Vehicle traction is also maintained in locations where catenaries cannot be installed for security, safety or aesthetic reasons – such as in historic city centres.

To meet the specific needs of the growing regenerative traction market, Saft has developed the new generation 250 V, compact, lightweight, modular Li-ion battery solution integrated within an industry-standard enclosure for direct onboard installation. The 250 V modules are designed for ease of mechanical assembly to offer the scalability and flexibility to suit every power need, and can be configured to create battery systems up to 750 V.

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