LAPSE:2019.0209
Published Article
LAPSE:2019.0209
A Rest Time-Based Prognostic Framework for State of Health Estimation of Lithium-Ion Batteries with Regeneration Phenomena
Taichun Qin, Shengkui Zeng, Jianbin Guo, Zakwan Skaf
January 31, 2019
State of health (SOH) prognostics is significant for safe and reliable usage of lithium-ion batteries. To accurately predict regeneration phenomena and improve long-term prediction performance of battery SOH, this paper proposes a rest time-based prognostic framework (RTPF) in which the beginning time interval of two adjacent cycles is adopted to reflect the rest time. In this framework, SOH values of regeneration cycles, the number of cycles in regeneration regions and global degradation trends are extracted from raw SOH time series and predicted respectively, and then the three sets of prediction results are integrated to calculate the final overall SOH prediction values. Regeneration phenomena can be found by support vector machine and hyperplane shift (SVM-HS) model by detecting long beginning time intervals. Gaussian process (GP) model is utilized to predict the global degradation trend, and nonlinear models are utilized to predict the regeneration amplitude and the cycle number of each regeneration region. The proposed framework is validated through experimental data from the degradation tests of lithium-ion batteries. The results demonstrate that both the global degradation trend and the regeneration phenomena of the testing batteries can be well predicted. Moreover, compared with the published methods, more accurate SOH prediction results can be obtained under this framework.
Keywords
cycle beginning time, hyperplane shift, lithium-ion batteries, rest time, state of health (SOH), support vector machine
Suggested Citation
Qin T, Zeng S, Guo J, Skaf Z. A Rest Time-Based Prognostic Framework for State of Health Estimation of Lithium-Ion Batteries with Regeneration Phenomena. (2019). LAPSE:2019.0209
Author Affiliations
Qin T: School of Reliability and Systems Engineering, Beihang University, Beijing 100191, China; IVHM Centre, Cranfield University, Cranfield MK43 0AL, UK
Zeng S: School of Reliability and Systems Engineering, Beihang University, Beijing 100191, China; Science and Technology on Reliability and Environmental Engineering Laboratory, Beijing 100191, China [ORCID]
Guo J: School of Reliability and Systems Engineering, Beihang University, Beijing 100191, China; Science and Technology on Reliability and Environmental Engineering Laboratory, Beijing 100191, China
Skaf Z: IVHM Centre, Cranfield University, Cranfield MK43 0AL, UK [ORCID]
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Journal Name
Energies
Volume
9
Issue
11
Article Number
E896
Year
2016
Publication Date
2016-11-01
Published Version
ISSN
1996-1073
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PII: en9110896, Publication Type: Journal Article
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LAPSE:2019.0209
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doi:10.3390/en9110896
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Jan 31, 2019
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Calvin Tsay
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