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논문 리스트

2021
상업용 리튬 배터리의 수명 예측을 위한 고속대량충방전 데이터 정규화 선형회귀모델의 적용 Application of Regularized Linear Regression Models Using Public Domain data for Cycle Life Prediction of Commercial Lithium-Ion Batteries
한국수소및신에너지학회
이종숙 외 1명
논문정보
Publisher
한국수소및신에너지학회논문집
Issue Date
2021-12-31
Keywords
-
Citation
-
Source
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Journal Title
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Volume
32
Number
6
Start Page
592
End Page
611
DOI
ISSN
17387264
Abstract
In this study a rarely available high-throughput cycling data set of 124 commercial lithium iron phosphate/graphite cells cycled under fast-charging conditions, with widely varying cycle lives ranging from 150 to 2,300 cycles including in-cycle temperature and per-cycle IR measurements. We worked out own Python codes which reproduced the various data plots and machine learning approaches for cycle life prediction using early cycles and more details not presented in the article and the supplementary information. Particularly, we applied regularized ridge, lasso and elastic net linear regression models using features extracted from capacity fade curves, discharge voltage curves, and other data such as internal resistance and cell can temperature. We found that due to the limitation in the quantity and quality of the data from costly and lengthy battery testing a careful hyperparameter tuning may be required and that model features need to be extracted based on the domain knowledge.

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이종숙 신소재공학부