Quantifying and Modeling of Stress-Driven Short-Circuits in Lithium-Ion Batteries in Electrified Vehicles

Binghe Liu, Xudong Duan, Chunhao Yuan, Lubing Wang, Jiani Li, Donal Finegan, Bill Feng, Jun Xu

Research output: Contribution to journalArticlepeer-review

43 Scopus Citations

Abstract

Despite the huge expansion of electric vehicle sales in the market, customers are discouraged by the possible catastrophic consequences brought by the safety issues of lithium-ion batteries, such as internal short circuits, especially in crash scenarios. Herein, we reveal the quantitative relationship between the deformations of the battery and the internal short circuit. Byin situandex situobservations andpost mortemcharacterization of the component materials, we quantify the stress-driven internal short circuit and failure behavior of the component material. With the aid of a validated numerical computational model as well as thein situcharacterization of the global-field temperature, we successfully identify the minor and major short circuits of the cells upon various mechanical abusive loadings. Finally, we establish the internal short circuit criteria for typical formats of batteries. This discovery also provides a fundamental understanding of both internal and external stress-driven short circuits in a much broader context.

Original languageAmerican English
Pages (from-to)7102-7113
Number of pages12
JournalJournal of Materials Chemistry A
Volume9
Issue number11
DOIs
StatePublished - 21 Mar 2021

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry 2021.

NREL Publication Number

  • NREL/JA-5700-79124

Keywords

  • battery safety
  • experimental characterization
  • internal short-circuit
  • modeling
  • stress-driven

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