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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Battery with Integrated Power Supply (BALIN)
Author(s)
Matteo Nobili, Lorenzo Flaccomio, David Russo, Giuseppe Grande, and Alfredo Biancucci
Full-Text PDF XML 889 Views
DOI:10.17265/2328-2142/2020.03.002
Affiliation(s)
Trenitalia, Florence, Italy
ABSTRACT
The BALIN is a modern
device, consisting of a battery with integrated battery charger, dedicated to
powering the 24 V services of the carriages. In various Trenitalia rolling
stock, used for the regional transport of travelers, there are old and obsolete
battery charger devices and there are lead acid batteries that need frequent
maintenance operations to be kept efficient. These components, due to their low
reliability, are the source of serious disruptions to passenger transport, and
the management of their maintenance involves high costs for Trenitalia. In
order to solve these problems, Trenitalia has therefore decided to invest
resources to develop a new system of integrated power supplies and batteries,
therefore the BALIN has been developed. The main advantages of BALIN compared
to the original components are the presence of a high energy efficiency battery
charger designed to operate in a wide range of temperatures and the presence of
sealed lead-acid batteries without maintenance with a life exceeding 6 years.
The BALIN is able to disconnect its own batteries from the carriage electrical
circuits. The BALIN battery charger also implements an intelligent battery
management logic and thanks to the interface with the command and control
signals present on the rolling stock, the batteries are isolated from the
carriage electric load automatically when the train is off and the service it's
over. Another important automatic feature of the BALIN is to protect its
batteries from deep discharge, in fact the power supply from the batteries to
the electric carriage loads is interrupted when the voltage reaches 21 V. The
characteristics mentioned go towards the reduction of the charge/discharge
cycles of batteries and contribute to increasing the reliability and durability
of batteries throughout the entire life of the rolling stock.
KEYWORDS
Battery, regional transport, power supply.
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