期刊
ELECTROCHIMICA ACTA
卷 256, 期 -, 页码 172-184出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2017.10.045
关键词
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资金
- start-up funds of The Recruitment Program of Global Experts awardee from Beihang University [YWF-17-BJ-Y-28]
- Research Project of State Key Laboratory of Vehicle NVH and Safety Technology [NVHSKL-201610]
- Opening project of State Key Laboratory of Explosion Science and Technology (Beijing Institute of Technology) [KFJJ17-13 M]
- Excellence Foundation of BUAA for PhD Students
Lithium-ion batteries (LIBs) are now widely applied to electric vehicles, such that the inevitable mechanical abuse safety problem during possible vehicle accidents has become a prominent barrier. This study initially proposes a multiphysics computational framework model that couples mechanical, thermal, and electrochemical models to describe the complete process for a single 18650 LIB cell subjected to abusive mechanical loading from initial deformation to the final thermal runaway. The designed experiments reveal the proposed model's suitable agreement with the established multiphysics model. Parametric studies in terms of governing factors, such as state of charge, loading speed, and deformation displacement, are conducted and discussed. These studies reveal the underlying mechanism for the mechanical abuse safety of LIBs. This model can lay a solid foundation to understand the electrochemical and mechanical integrity of LIBs, as well as provide critical guidance for battery safety designs. (C) 2017 Elsevier Ltd. All rights reserved.
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