TY - JOUR
T1 - Coupled mechanical-electrical-thermal modeling for short-circuit prediction in a lithium-ion cell under mechanical abuse
AU - Zhang, Chao
AU - Santhanagopalan, Shriram
AU - Sprague, Michael A.
AU - Pesaran, Ahmad A.
N1 - Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
PY - 2015
Y1 - 2015
N2 - In order to better understand the behavior of lithium-ion batteries under mechanical abuse, a coupled modeling methodology encompassing the mechanical, electrical and thermal response is presented for predicting short-circuit under external crush. The combined mechanical-electrical-thermal response is simulated in a commercial finite element software LS-DYNA® using a representative-sandwich finite-element model, where electrical-thermal modeling is conducted after an instantaneous mechanical crush. The model includes an explicit representation of each individual component such as the active material, current collector, separator, etc., and predicts their mechanical deformation under quasi-static indentation. Model predictions show good agreement with experiments: the fracture of the battery structure under an indentation test is accurately predicted. The electrical-thermal simulation predicts the current density and temperature distribution in a reasonable manner. Whereas previously reported models consider the mechanical response exclusively, we use the electrical contact between active materials following the failure of the separator as a criterion for short-circuit. These results are used to build a lumped representative sandwich model that is computationally efficient and captures behavior at the cell level without resolving the individual layers.
AB - In order to better understand the behavior of lithium-ion batteries under mechanical abuse, a coupled modeling methodology encompassing the mechanical, electrical and thermal response is presented for predicting short-circuit under external crush. The combined mechanical-electrical-thermal response is simulated in a commercial finite element software LS-DYNA® using a representative-sandwich finite-element model, where electrical-thermal modeling is conducted after an instantaneous mechanical crush. The model includes an explicit representation of each individual component such as the active material, current collector, separator, etc., and predicts their mechanical deformation under quasi-static indentation. Model predictions show good agreement with experiments: the fracture of the battery structure under an indentation test is accurately predicted. The electrical-thermal simulation predicts the current density and temperature distribution in a reasonable manner. Whereas previously reported models consider the mechanical response exclusively, we use the electrical contact between active materials following the failure of the separator as a criterion for short-circuit. These results are used to build a lumped representative sandwich model that is computationally efficient and captures behavior at the cell level without resolving the individual layers.
KW - Lithium-ion battery
KW - Mechanical crush
KW - Multi-physics simulation
KW - Representative sandwich model
KW - Short circuit
UR - http://www.scopus.com/inward/record.url?scp=84940374666&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2015.04.162
DO - 10.1016/j.jpowsour.2015.04.162
M3 - 文章
AN - SCOPUS:84940374666
SN - 0378-7753
VL - 290
SP - 102
EP - 113
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -