Next Article in Journal
Environmental and Economic Performance of CO2-Based Methanol Production Using Long-Distance Transport for H2 in Combination with CO2 Point Sources: A Case Study for Germany
Previous Article in Journal
De-Risking Solar Receivers to Achieve SunShot Targets
 
 
Article

Multi-Layered Numerical Model Development of a Standard Cylindrical Lithium-Ion Battery for the Impact Test

1
Department of Mechanical and Design Engineering, Hongik University, Sejong-ro 2639, Jochiwon-eup, Sejong 339-701, Korea
2
Department of Naval Architecture and Ocean Engineering, Hongik University, Sejong-ro 2639, Jochiwon-eup, Sejong 339-701, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Carlos Miguel Costa
Energies 2022, 15(7), 2509; https://doi.org/10.3390/en15072509
Received: 21 February 2022 / Revised: 23 March 2022 / Accepted: 28 March 2022 / Published: 29 March 2022
(This article belongs to the Topic Safety of Lithium-ion Batteries)
For safety issues in lithium-ion batteries (LIBs), international standards and regulations for various abusive environments have been developed, and UL1642 in Underwriters Laboratories (UL) currently covers electrical, mechanical, environmental, and fire exposure tests. An impact test is one of mechanical abuse tests in UL1642, which aims to determine the safe prevention of fire or explosion. As the energy density of a lithium-ion battery is continuously increasing, it is difficult to pass the regulation. Therefore, it is necessary to predict failure mode due to an internal short circuit in developing high-capacity cells. For a sudden and measured mechanical force, we speculate that damage to a separator consisting of LIBs makes the battery experience an exothermic phenomenon due to an internal short circuit because a separator is a key component for preventing the electrical contact between two electrodes. Therefore, if we can find mechanical stresses of each component in LIBs, we can evaluate whether each component is severely damaged or not. In the present study, we propose a finite element model consisting of a multi-layered structure, which will permit us to assess the possible onset location of the short circuit, and to predict the sequence of failure at a cell level. We applied the proposed method to a cylindrical cell, and the accuracy of the model was verified through the comparison of the experiment results. Additionally, simulation results showed that it is possible to track mechanical stress variations of each component progressively. Furthermore, we performed the numerical experiment evaluating the thickness effect of a center-pin. We expect the proposed finite element model to be used in order to devise cell level abuse-tolerant design from a mechanical point of view before conducting mechanical abuse tests as part of the product development process. View Full-Text
Keywords: center-pin; cylindrical cell; frictional contact; impact test; lithium-ion battery center-pin; cylindrical cell; frictional contact; impact test; lithium-ion battery
Show Figures

Figure 1

MDPI and ACS Style

Ahn, Y.J.; Lee, Y.-S.; Cho, J.-R. Multi-Layered Numerical Model Development of a Standard Cylindrical Lithium-Ion Battery for the Impact Test. Energies 2022, 15, 2509. https://doi.org/10.3390/en15072509

AMA Style

Ahn YJ, Lee Y-S, Cho J-R. Multi-Layered Numerical Model Development of a Standard Cylindrical Lithium-Ion Battery for the Impact Test. Energies. 2022; 15(7):2509. https://doi.org/10.3390/en15072509

Chicago/Turabian Style

Ahn, Young Ju, Yeon-Seung Lee, and Jin-Rae Cho. 2022. "Multi-Layered Numerical Model Development of a Standard Cylindrical Lithium-Ion Battery for the Impact Test" Energies 15, no. 7: 2509. https://doi.org/10.3390/en15072509

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop