中文版 | English
Title

Inferring electrochemical performance and parameters of Li-ion batteries based on deep operator networks

Author
Corresponding AuthorZhang,Dongxiao
Publication Years
2023-08-15
DOI
Source Title
EISSN
2352-152X
Volume65
Abstract
Li-ion battery is a complex physicochemical system that generally takes observable current and terminal voltage as input and output, while leaving some unobservable quantities, e.g., Li-ion concentration, for serving as internal variables (states) of the system. On-line estimation for the unobservable states plays a key role in battery management system since they reflect battery safety and degradation conditions. Several kinds of models that map from current to voltage have been established for state estimation, such as accurate but inefficient physics-based models, and efficient but sometimes inaccurate equivalent circuit and black-box models. To realize accuracy and efficiency simultaneously in battery modeling, we propose to build a data-driven surrogate for a battery system while incorporating the underlying physics as constraints. In this work, we innovatively treat the functional mapping from current curve to terminal voltage as a composite of operators, which is approximated by the powerful deep operator network (DeepONet). Its learning capability is firstly verified through a predictive test for Li-ion concentration at two electrodes. In this experiment, the physics-informed DeepONet is found to be more robust than the purely data-driven DeepONet, especially in temporal extrapolation scenarios. A composite surrogate is then constructed for mapping current curve and solid diffusivity to terminal voltage with three operator networks, in which two parallel physics-informed DeepONets are firstly used to predict Li-ion concentration at two electrodes, and then based on their surface values, a DeepONet is built to give terminal voltage predictions. Since the surrogate is differentiable anywhere, it is endowed with the ability to learn from data directly, which was validated by using terminal voltage measurements to estimate input parameters. The proposed surrogate built upon operator networks possesses great potential to be applied in on-board scenarios, since it integrates efficiency and accuracy by incorporating underlying physics, and also leaves an interface for model refinement through a totally differentiable model structure.
Keywords
URL[Source Record]
Language
English
SUSTech Authorship
Corresponding
Scopus EID
2-s2.0-85152412256
Data Source
Scopus
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/528176
DepartmentSchool of Environmental Science and Engineering
Affiliation
1.Department of Mathematics and Theories,Peng Cheng Laboratory,Shenzhen,Guangdong,518000,China
2.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
3.Eastern Institute for Advanced Study,Eastern Institute of Technology,Ningbo,Zhejiang,315200,China
Corresponding Author AffilicationSchool of Environmental Science and Engineering
Recommended Citation
GB/T 7714
Zheng,Qiang,Yin,Xiaoguang,Zhang,Dongxiao. Inferring electrochemical performance and parameters of Li-ion batteries based on deep operator networks[J]. Journal of Energy Storage,2023,65.
APA
Zheng,Qiang,Yin,Xiaoguang,&Zhang,Dongxiao.(2023).Inferring electrochemical performance and parameters of Li-ion batteries based on deep operator networks.Journal of Energy Storage,65.
MLA
Zheng,Qiang,et al."Inferring electrochemical performance and parameters of Li-ion batteries based on deep operator networks".Journal of Energy Storage 65(2023).
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