The aging behavior of lithium cell has a profound impact on its performance in terms of energy, power efficiency and capacity fade, especially when it is considered in End of Life (EOL) in automotive field. Lithium battery is considered in EOL if at 85-80% of nominal capacity. Today, the reusing of Electric and Hybrid Vehicles EOL batteries on less-demanding grid connected energy storage applications, giving them a second use/life, is an interesting solution to reduce high potential cost of lithium batteries. Currently, there is a lack of investigation of the performances of these second life batteries. In this paper, authors show the results of the impedance spectroscopy of 20 Ah lithium NMC batteries after EOL, exactly at 100, 85, 80, 60 and 50% of rated capacity, in a wide range of frequency: 450 mHz to 3.5 kHz. By results, there are many way to correlate battery state of health and battery impedance spectroscopy, especially when the battery is in second life.

Impedance spectroscopy characterization of lithium batteries with different ages in second life application / Locorotondo E.; Cultrera V.; Pugi L.; Berzi L.; Pasquali M.; Andrenacci N.; Lutzemberger G.; Pierini M.. - ELETTRONICO. - (2020), pp. 1-6. ((Intervento presentato al convegno 2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe, EEEIC / I and CPS Europe 2020 tenutosi a esp nel 2020 [10.1109/EEEIC/ICPSEurope49358.2020.9160616].

Impedance spectroscopy characterization of lithium batteries with different ages in second life application

Locorotondo E.
Methodology
;
Cultrera V.
Investigation
;
Pugi L.
Conceptualization
;
Berzi L.
Investigation
;
Pierini M.
Resources
2020

Abstract

The aging behavior of lithium cell has a profound impact on its performance in terms of energy, power efficiency and capacity fade, especially when it is considered in End of Life (EOL) in automotive field. Lithium battery is considered in EOL if at 85-80% of nominal capacity. Today, the reusing of Electric and Hybrid Vehicles EOL batteries on less-demanding grid connected energy storage applications, giving them a second use/life, is an interesting solution to reduce high potential cost of lithium batteries. Currently, there is a lack of investigation of the performances of these second life batteries. In this paper, authors show the results of the impedance spectroscopy of 20 Ah lithium NMC batteries after EOL, exactly at 100, 85, 80, 60 and 50% of rated capacity, in a wide range of frequency: 450 mHz to 3.5 kHz. By results, there are many way to correlate battery state of health and battery impedance spectroscopy, especially when the battery is in second life.
Proceedings - 2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe, EEEIC / I and CPS Europe 2020
2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe, EEEIC / I and CPS Europe 2020
esp
2020
Goal 9: Industry, Innovation, and Infrastructure
Locorotondo E.; Cultrera V.; Pugi L.; Berzi L.; Pasquali M.; Andrenacci N.; Lutzemberger G.; Pierini M.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2158/1206153
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