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EnglishIn this paper, the use of binary sequences for electrochemical impedance spectroscopy (EIS) of battery cells is experimentally investigated by implementing them on a VLSI 1-bit current digital-to-analog converter. Two types of binary sequences are considered, i.e. sigma-delta modulated multisine sequences and maximum-length binary sequences. Their performance is evaluated using a low-complexity experimental setup. Results prove that the two types of sequences are capable of estimating the complex impedance of a battery in the frequency range of interest 1 Hz-200 Hz with an RMSE smaller than 5% with respect to a reference instrument. Both sequences are suitable for implementing online in-situ EIS monitoring, because they enable fast measurement and simple integration within the battery cell itself.
| Titolo: | In-situ Electrochemical Impedance Spectroscopy of Battery Cells by means of Binary Sequences | |
| Autore/i: | De Angelis A.; Ramilli R.; Crescentini M.; Moschitta A.; Carbone P.; Traverso P. A. | |
| Autore/i Unibo: | ||
| Anno: | 2021 | |
| Serie: | ||
| Titolo del libro: | Conference Record - IEEE Instrumentation and Measurement Technology Conference | |
| Pagina iniziale: | 1 | |
| Pagina finale: | 5 | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1109/I2MTC50364.2021.9459998 | |
| Abstract: | In this paper, the use of binary sequences for electrochemical impedance spectroscopy (EIS) of battery cells is experimentally investigated by implementing them on a VLSI 1-bit current digital-to-analog converter. Two types of binary sequences are considered, i.e. sigma-delta modulated multisine sequences and maximum-length binary sequences. Their performance is evaluated using a low-complexity experimental setup. Results prove that the two types of sequences are capable of estimating the complex impedance of a battery in the frequency range of interest 1 Hz-200 Hz with an RMSE smaller than 5% with respect to a reference instrument. Both sequences are suitable for implementing online in-situ EIS monitoring, because they enable fast measurement and simple integration within the battery cell itself. | |
| Data stato definitivo: | 23-feb-2022 | |
| Appare nelle tipologie: | 4.01 Contributo in Atti di convegno |
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