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  • Wei, ZhongbaoBeijing Institute of Technology (författare)

Machine learning-based fast charging of lithium-ion battery by perceiving and regulating internal microscopic states

  • Artikel/kapitelEngelska2023

Förlag, utgivningsår, omfång ...

  • Elsevier BV,2023

Nummerbeteckningar

  • LIBRIS-ID:oai:research.chalmers.se:45e08f68-415d-4b3a-8cd6-743997413557
  • https://doi.org/10.1016/j.ensm.2022.12.034DOI
  • https://research.chalmers.se/publication/534128URI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

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Klassifikation

  • Ämneskategori:art swepub-publicationtype
  • Ämneskategori:ref swepub-contenttype

Anmärkningar

  • Fast charging of the lithium-ion battery (LIB) is an enabling technology for the popularity of electric vehicles. However, high-rate charging regardless of the physical limits can induce irreversible degradation or even hazardous safety issues to the LIB system. Motivated by this, this paper proposes a machine learning-based fast charging strategy with multi-physical awareness within a battery-to-cloud framework. In particular, a reduced-order electrochemical-thermal model is built in the cloud to perceive the microscopic states of LIB, leveraging which the soft actor-critic (SAC) deep reinforcement learning (DRL) algorithm is exploited for the first time to train a fast charging strategy. Hardware-in-Loop tests and experiments with practical LIBs are carried out for validation. Results suggest that the battery-to-cloud architecture can mitigate the risk of a heavy computing burden in the real-time controller. The proposed strategy can effectively mitigate the unfavorable over-temperature and lithium deposition, which benefits the safety and longevity during fast charging. Given a similar charging speed, the proposed machine learning approach extends the LIB cycle life by about 75% compared to the commonly-used empirical protocol. Meanwhile, the proposed strategy is proven superior to the state-of-the-art rule-based and the model-based strategies in terms of charging rapidity, charging safety and computational complexity. Moreover, the trained low-complexity strategy is highly adaptive to the ambient temperature and initial charging state, which promises robust performance in practical applications.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Yang, XiaofengBeijing Institute of Technology (författare)
  • Li, Yang,1984Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)yanu (författare)
  • He, HongwenBeijing Institute of Technology (författare)
  • Li, WeihanRheinisch-Westfaelische Technische Hochschule Aachen,RWTH Aachen University (författare)
  • Sauer, Dirk UweRheinisch-Westfaelische Technische Hochschule Aachen,RWTH Aachen University (författare)
  • Beijing Institute of TechnologyChalmers tekniska högskola (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Energy Storage Materials: Elsevier BV56, s. 62-752405-8297

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