Electrical Response of Mechanically Damaged Lithium-Ion Batteries
Name
energies-13-04284.pdf
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10.45 MB
Format
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Checksum (MD5)
662b666deebd5c3c37c1e08c72259c5c
Author(s)
Soudbakhsh, Damoon
Gilaki, Mehdi
Lynch, William
Zhang, Peilin
Choi, Taeyoung
Sahraei, Elham
Date Issued
August 2020
Journal
Energies
Publisher
Multidisciplinary Digital Publishing Institute
Citation
Soudbakhsh, Damoon et al. "Electrical Response of Mechanically Damaged Lithium-Ion Batteries." Energies 13, 17 (August 2020): 4284 ©2020 Author(s)
Version
Final published version
Abstract
Lithium-ion batteries have found various modern applications due to their high energy density, long cycle life, and low self-discharge. However, increased use of these batteries has been accompanied by an increase in safety concerns, such as spontaneous fires or explosions due to impact or indentation. Mechanical damage to a battery cell is often enough reason to discard it. However, if an Electric Vehicle is involved in a crash, there is no means to visually inspect all the cells inside a pack, sometimes consisting of thousands of cells. Furthermore, there is no documented report on how mechanical damage may change the electrical response of a cell, which in turn can be used to detect damaged cells by the battery management system (BMS). In this research, we investigated the effects of mechanical deformation on electrical responses of Lithium-ion cells to understand what parameters in electrical response can be used to detect damage where cells cannot be visually inspected. We used charge-discharge cycling data, capacity fade measurement, and Electrochemical Impedance Spectroscopy (EIS) in combination with advanced modeling techniques. Our results indicate that many cell parameters may remain unchanged under moderate indentation, which makes detection of a damaged cell a challenging task for the battery pack and BMS designers.
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.3390/en13174284
