Li-ion batteries are widely employed as sources of portable energy. Advanced Battery Management Systems (ABMSs) rely on models to optimize battery performance (e.g. time-charge, life-time). The aim of this work is to assess if an energy efficiency improvement with respect to standard charging protocols can be obtained from model-based optimization in the time or in the frequency domain. Time-domain optimization is first considered and it is shown that only negligible improvements can be obtained. Then, motivated by successful experiments (e.g. [1], [2]), frequency-domain optimization is also investigated. Within this context, we prove that linear models are inadequate for providing any improvement. Surprisingly, even the mostly used electrochemical model available in literature (P2D), fails to capture the energy dissipation reduction with sinusoidal input current. These results show that currently available models are not suitable for the design of model-based energy saving strategies.

Pozzi, A., Torchio, M., Raimondo, D. M., Assessing the Performance of Model-Based Energy Saving Charging Strategies in Li-Ion Cells, Contributed paper, in 2018 IEEE Conference on Control Technology and Applications, CCTA 2018, (Danimarca, 21-24 August 2018), Institute of Electrical and Electronics Engineers Inc., 345 E 47TH ST, NEW YORK, NY 10017 USA 2018: 806-811. 10.1109/CCTA.2018.8511463 [http://hdl.handle.net/10807/193675]

Assessing the Performance of Model-Based Energy Saving Charging Strategies in Li-Ion Cells

Pozzi, A.
Primo
;
2018

Abstract

Li-ion batteries are widely employed as sources of portable energy. Advanced Battery Management Systems (ABMSs) rely on models to optimize battery performance (e.g. time-charge, life-time). The aim of this work is to assess if an energy efficiency improvement with respect to standard charging protocols can be obtained from model-based optimization in the time or in the frequency domain. Time-domain optimization is first considered and it is shown that only negligible improvements can be obtained. Then, motivated by successful experiments (e.g. [1], [2]), frequency-domain optimization is also investigated. Within this context, we prove that linear models are inadequate for providing any improvement. Surprisingly, even the mostly used electrochemical model available in literature (P2D), fails to capture the energy dissipation reduction with sinusoidal input current. These results show that currently available models are not suitable for the design of model-based energy saving strategies.
Inglese
2018 IEEE Conference on Control Technology and Applications, CCTA 2018
2nd IEEE Conference on Control Technology and Applications, CCTA 2018
Danimarca
Contributed paper
21-ago-2018
24-ago-2018
978-1-5386-7698-1
Institute of Electrical and Electronics Engineers Inc.
Pozzi, A., Torchio, M., Raimondo, D. M., Assessing the Performance of Model-Based Energy Saving Charging Strategies in Li-Ion Cells, Contributed paper, in 2018 IEEE Conference on Control Technology and Applications, CCTA 2018, (Danimarca, 21-24 August 2018), Institute of Electrical and Electronics Engineers Inc., 345 E 47TH ST, NEW YORK, NY 10017 USA 2018: 806-811. 10.1109/CCTA.2018.8511463 [http://hdl.handle.net/10807/193675]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10807/193675
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