State-of-Charge Monitoring and Battery Diagnosis of NiCd Cells Using Impedance Spectroscopy
With respect to aeronautical applications, the state-of-charge (SOC) and state-of-health (SOH) of rechargeable nickel−cadmium batteries was investigated with the help of the frequency-dependent reactance Im <i>Z</i>(<i>ω</i>) and the pseudo-capacitance <...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-01-01
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| Series: | Batteries |
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| Online Access: | https://www.mdpi.com/2313-0105/6/1/4 |
| _version_ | 1819065410438299648 |
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| author | Peter Kurzweil Wolfgang Scheuerpflug |
| author_facet | Peter Kurzweil Wolfgang Scheuerpflug |
| author_sort | Peter Kurzweil |
| collection | DOAJ |
| description | With respect to aeronautical applications, the state-of-charge (SOC) and state-of-health (SOH) of rechargeable nickel−cadmium batteries was investigated with the help of the frequency-dependent reactance Im <i>Z</i>(<i>ω</i>) and the pseudo-capacitance <i>C</i>(<i>ω</i>) in the frequency range between 1 kHz and 0.1 Hz. The method of SOC monitoring using impedance spectroscopy is evaluated with the example of 1.5-year long-term measurements of commercial devices. A linear correlation between voltage and capacitance is observed as long as overcharge and deep discharge are avoided. Pseudo-charge <i>Q</i>(<i>ω</i>) = <i>C</i>(<i>ω</i>)⋅<i>U</i> at 1 Hz with respect to the rated capacity is proposed as a reliable SOH indicator for rapid measurements. The benefit of different evaluation methods and diagram types for impedance data is outlined. |
| first_indexed | 2024-12-21T15:46:01Z |
| format | Article |
| id | doaj.art-dd6623a8bc2848389ebe719684fffea6 |
| institution | Directory Open Access Journal |
| issn | 2313-0105 |
| language | English |
| last_indexed | 2024-12-21T15:46:01Z |
| publishDate | 2020-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Batteries |
| spelling | doaj.art-dd6623a8bc2848389ebe719684fffea62022-12-21T18:58:21ZengMDPI AGBatteries2313-01052020-01-0161410.3390/batteries6010004batteries6010004State-of-Charge Monitoring and Battery Diagnosis of NiCd Cells Using Impedance SpectroscopyPeter Kurzweil0Wolfgang Scheuerpflug1Electrochemistry Laboratory, University of Applied Sciences (OTH), Kaiser-Wilhelm-Ring 23, 92224 Amberg, GermanyDiehl Aerospace GmbH, Donaustraße 120, 90451 Nürnberg, GermanyWith respect to aeronautical applications, the state-of-charge (SOC) and state-of-health (SOH) of rechargeable nickel−cadmium batteries was investigated with the help of the frequency-dependent reactance Im <i>Z</i>(<i>ω</i>) and the pseudo-capacitance <i>C</i>(<i>ω</i>) in the frequency range between 1 kHz and 0.1 Hz. The method of SOC monitoring using impedance spectroscopy is evaluated with the example of 1.5-year long-term measurements of commercial devices. A linear correlation between voltage and capacitance is observed as long as overcharge and deep discharge are avoided. Pseudo-charge <i>Q</i>(<i>ω</i>) = <i>C</i>(<i>ω</i>)⋅<i>U</i> at 1 Hz with respect to the rated capacity is proposed as a reliable SOH indicator for rapid measurements. The benefit of different evaluation methods and diagram types for impedance data is outlined.https://www.mdpi.com/2313-0105/6/1/4battery life testingcapacitancestate-of-charge determinationstate-of-healthagingimpedance spectroscopypseudo-charge |
| spellingShingle | Peter Kurzweil Wolfgang Scheuerpflug State-of-Charge Monitoring and Battery Diagnosis of NiCd Cells Using Impedance Spectroscopy Batteries battery life testing capacitance state-of-charge determination state-of-health aging impedance spectroscopy pseudo-charge |
| title | State-of-Charge Monitoring and Battery Diagnosis of NiCd Cells Using Impedance Spectroscopy |
| title_full | State-of-Charge Monitoring and Battery Diagnosis of NiCd Cells Using Impedance Spectroscopy |
| title_fullStr | State-of-Charge Monitoring and Battery Diagnosis of NiCd Cells Using Impedance Spectroscopy |
| title_full_unstemmed | State-of-Charge Monitoring and Battery Diagnosis of NiCd Cells Using Impedance Spectroscopy |
| title_short | State-of-Charge Monitoring and Battery Diagnosis of NiCd Cells Using Impedance Spectroscopy |
| title_sort | state of charge monitoring and battery diagnosis of nicd cells using impedance spectroscopy |
| topic | battery life testing capacitance state-of-charge determination state-of-health aging impedance spectroscopy pseudo-charge |
| url | https://www.mdpi.com/2313-0105/6/1/4 |
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