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Methodologies for the evaluation of the battery state of charge in fuel cell systems
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 23, 2001 by Consiglio Nazionale delle Ricerche in Italy
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The electric storage equipment plays a relevant role in the framework of the minimum impact vehicles. Speaking about both electric and hybrid vehicles the battery still remain a necessary subsystem in order to realise an energy buffer and/or a power buffer. Normally the batteries (i.e. lead acid, Ni–MeH, semibipolar) are delivered from the manufacturers without a SOC (State of Charge) indicator. In this article it will be approached a methodology to estimate the state of charge of a battery using only the current and voltage signal.
The algorithm came from a previous patent of Centro Ricerche FIAT and it will be specially modified in order to be applied to a battery system of an electric vehicle propelled by a 15 kW motor and with a 5KW fuel cell auxiliary power unit.
The aim of the technology is to overtake the difficulties from the use of in-site sensors (i.e. optical or chemical). The technology will be tested in numerical simulation
The algorithm was implemented on the control unit onboard the Seicento Elettra with APU Fuel Cell with the objective to manage the traction battery state of charge (SOC) with the activation or the deactivation of the fuel cell system.
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CitationCERES, P. and GORTAN, L., "Methodologies for the evaluation of the battery state of charge in fuel cell systems," SAE Technical Paper 2001-24-0030, 2001, https://doi.org/10.4271/2001-24-0030.
- Aresti M. Verifica sperimentale di un sistema di celle a combustibile per l’autotrazione La Sapienza University February 2000
- Gortan L. Cascella I. Ottaviani S. Aimasso R. Centro Ricerche FIAT Modellazione e controllo di fuel cell system in configurazione auxiliary power unit (APU) Proceedings of ANAE Seminar March 2001