| Presentation | 2020-08-28 A capacity degradation diagnosis of Lithium-ion Battery with Electrochemical Impedance method and Hierarchical Bayesian Ryo Nakazato, Shinji Yokogawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this study, we propose a method of battery health diagnoses by the Hierarchical Bayesian model with the internal condition changes contributed by degradation. To understand the cause of capacity degradation on Lithium-ion Battery(LiB) affected greatly from the way to use and the environment, the charging/discharging experiment was performed considering degradation mechanisms. The interaction for the stress was analyzed statistically. Firstly, we performed a systematic charging/discharging experiment with 18650 LiB. From the statistical analysis of capacity degradation, the interaction between cycle degradation and calendar degradation was confirmed. Secondly, the equivalent circuit model of the LiB was estimated by the electrochemical impedance method. The relation between the internal condition changes and capacity degradation was observed by using the equivalent circuit model. From the relation between the changing and capacity degradation, we found charge transfer resistance increase of cathode contributes to capacity degradation. Based on these results, we estimate charge transfer resistance with the characters in the early stages of charging/discharging curves, we propose the Hierarchical Bayesian model that diagnoses the state of degradation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LiB / Degradation / Impedance / Charge transfer resistance |
| Paper # | R2020-10,EMD2020-9,CPM2020-2,OPE2020-22,LQE2020-2 |
| Date of Issue | 2020-08-21 (R, EMD, CPM, OPE, LQE) |
| Conference Information | |
| Committee | R / LQE / OPE / CPM / EMD |
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| Conference Date | 2020/8/28(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Akira Asato(Fujitsu) / Hiroshi Yasaka(Tohoku Univ.) / Goji Nakagawa(Fujitsu) / Mayumi Takeyama(Kitami Inst. of Tech.) / Yoshiki Kayano(Univ. of Electro-Comm.) |
| Vice Chair | Tadashi Dohi(Hiroshima Univ.) / Toshitada Umezawa(NICT) / Takaaki Ishigure(Keio Univ.) / Yuichi Nakamura(Toyohashi Univ. of Tech.) |
| Secretary | Tadashi Dohi(Hosei Univ.) / Toshitada Umezawa(Kansai Univ.) / Takaaki Ishigure(Osaka Univ.) / Yuichi Nakamura(NTT) / (Gunma Univ.) |
| Assistant | Hiroyuki Okamura(Hiroshima Univ.) / Shinji Yokogawa(Univ. of Electro-Comm.) / Kazuue Fujita(Hamamatsu) / Nobuhiko Nishiyama(Tokyo Inst. of Tech.) / Junichi Fujikata(PETRA) / Toshio Watanabe(Kagoshima Univ.) / Yasuo Kimura(Tokyo Univ. of Tech.) / Tomoaki Terasako(Ehime Univ.) / Fumihiko Hirose(Yamagata Univ.) / Yuichi Hayashi(ＮＡＩＳＴ) / Kazuaki Miyanaga(Fujitsu Component) |
| Paper Information | |
| Registration To | Technical Committee on Reliability / Technical Committee on Lasers and Quantum Electronics / Technical Committee on OptoElectronics / Technical Committee on Component Parts and Materials / Technical Committee on Electromechanical Devices |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A capacity degradation diagnosis of Lithium-ion Battery with Electrochemical Impedance method and Hierarchical Bayesian |
| Sub Title (in English) | |
| Keyword(1) | LiB |
| Keyword(2) | Degradation |
| Keyword(3) | Impedance |
| Keyword(4) | Charge transfer resistance |
| 1st Author's Name | Ryo Nakazato |
| 1st Author's Affiliation | The University of Electro-communications(UEC) |
| 2nd Author's Name | Shinji Yokogawa |
| 2nd Author's Affiliation | The University of Electro-communications(UEC) |
| Date | 2020-08-28 |
| Paper # | R2020-10,EMD2020-9,CPM2020-2,OPE2020-22,LQE2020-2 |
| Volume (vol) | vol.120 |
| Number (no) | R-143,EMD-144,CPM-145,OPE-146,LQE-147 |
| Page | pp.pp.5-10(R), pp.5-10(EMD), pp.5-10(CPM), pp.5-10(OPE), pp.5-10(LQE), |
| #Pages | 6 |
| Date of Issue | 2020-08-21 (R, EMD, CPM, OPE, LQE) |