Effects of vibrations and shocks on lithium-ion cells

Brand, Martin J.; Schuster, Simon F.; Bach, Tobias; Fleder, Elena; Stelz, Manfred; Gläser, Simon; Müller, Jana; Sextl, Gerhard; Jossen, Andreas

doi:10.1016/j.jpowsour.2015.04.107

Cited by 103 publications

(81 citation statements)

References 10 publications

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“…180 ℃). 66 Considering the decomposition of SEI and the melting of the separator together with the electrochemical characterization (a sudden voltage drop in Figure 2d), it can be concluded that an ISC occurs during charge. This is the first experimental demonstration of the melting of the separator and the porous LmS phase in a nondestructive and three-dimensional way.…”

Section: Comparison Of the Amount Of Lms Determined By Morphological mentioning

confidence: 87%

Study of the Mechanisms of Internal Short Circuit in a Li/Li Cell by Synchrotron X-ray Phase Contrast Tomography

et al. 2016

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Knowledge about degradation and failure of Li-ion batteries (LIBs) is of paramount importance especially because failure can be accompanied by severe hazards. To contribute to the understanding of such phenomena synchrotron in-line phase contrast Xray tomography was employed to investigate internal cell deformation and degradation caused by an internal short circuit (ISC). The tomographic images taken from an uncycled Li/Li cell and a short-circuited Li/Li cell reveal how lithium microstructures (LmS) develop during electrochemical stripping and plating during discharge and charge and how the three-layer separator used is damaged by growing LmSs and delaminates and melts as a consequence of an ISC. Previously unknown insights into the internal cell degradation and deformation mechanisms caused by an ISC are obtained and provide hints of how the properties of the separator could be modified in order to improve the reliability and safety of current and next-generation LIBs.

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Section: Comparison Of the Amount Of Lms Determined By Morphological mentioning

confidence: 87%

Study of the Mechanisms of Internal Short Circuit in a Li/Li Cell by Synchrotron X-ray Phase Contrast Tomography

et al. 2016

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“…(5) The battery is discharged with a constant current 2.35 A by 3 min (i.e., discharging by 10% of the capacity) and then the battery is left in the open-circuit condition for 4 h to achieve electrochemical and heat equilibrium. (6) Step (5) is repeated four times.…”

Section: Battery Testing Benchmentioning

confidence: 99%

“…Lithium-ion batteries have been widely used in mobile phones, digital cameras, laptops, other portable consumer electronics, and renewable energy storage [5,6]. With the continuous development and improvement of science and technology, the application range of lithium-ion batteries has further widened to the electric power, aerospace, military, and other critical fields [7,8].…”

Section: Introductionmentioning

confidence: 99%

Comparative Research on RC Equivalent Circuit Models for Lithium-Ion Batteries of Electric Vehicles

et al. 2017

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Equivalent circuit models are a hot research topic in the field of lithium-ion batteries for electric vehicles, and scholars have proposed a variety of equivalent circuit models, from simple to complex. On one hand, a simple model cannot simulate the dynamic characteristics of batteries; on the other hand, it is difficult to apply a complex model to a real-time system. At present, there are few systematic comparative studies on equivalent circuit models of lithium-ion batteries. The representative first-order resistor-capacitor (RC) model and second-order RC model commonly used in the literature are studied comparatively in this paper. Firstly, the parameters of the two models are identified experimentally; secondly, the simulation model is built in Matlab/Simulink environment, and finally the output precision of these two models is verified by the actual data. The results show that in the constant current condition, the maximum error of the first-order RC model is 1.65% and the maximum error for the second-order RC model is 1.22%. In urban dynamometer driving schedule (UDDS) condition, the maximum error of the first-order RC model is 1.88%, and for the second-order RC model the maximum error is 1.69%. This is of great instructional significance to the application in practical battery management systems for the equivalent circuit model of lithium-ion batteries of electric vehicles.

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“…In battery studies, this technique is used to observe and assess the internal construction of the cell and any variations between test conditions or samples. 12,13 Our experiment was conducted on a Shimadzu SMX-225CT scanner using the following test settings: tube voltage set to 210 kV and tube current set to 130 μA. Additionally, we selected to operate in off-set mode because it offers the finest resolution for samples larger than 10 cm in width.…”

Section: Methodsmentioning

confidence: 99%

Overcharge Study in Li₄Ti₅O₁₂Based Lithium-Ion Pouch Cell

Devie

Dubarry

Wu³

et al. 2016

J. Electrochem. Soc.

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An Li4Ti5O12 || LiNi1/3Mn1/3Co1/3O2 lithium-ion pouch cell has been subjected to an overcharge early in its cycle-life and kept cycling it up to 1500 cycles afterwards. We report on the non-invasive experimental verifications we conducted to corroborate our initial findings obtained via incremental capacity analysis. First, we used incremental capacity analysis on the negative electrode during overcharge to bring evidence of electrolyte reduction below 1 V vs. Li/Li+. Second, we used X-ray computerized tomography (CT scan) to demonstrate that gas bubbles were trapped between layers of positive and negative electrodes, thereby disabling the ionic conduction pathway between the two and causing capacity fade. Third, we administered a massage to the pouch cell to establish that the gas bubbles could be displaced, thereby recovering about 60% of the faded capacity. Finally, we proposed a new approach based on the study of the open-circuit voltage to describe quantitatively the gains of active materials that led to the partial capacity recovery.

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Effects of vibrations and shocks on lithium-ion cells

Cited by 103 publications

References 10 publications

Study of the Mechanisms of Internal Short Circuit in a Li/Li Cell by Synchrotron X-ray Phase Contrast Tomography

Study of the Mechanisms of Internal Short Circuit in a Li/Li Cell by Synchrotron X-ray Phase Contrast Tomography

Comparative Research on RC Equivalent Circuit Models for Lithium-Ion Batteries of Electric Vehicles

Overcharge Study in Li₄Ti₅O₁₂Based Lithium-Ion Pouch Cell

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Effects of vibrations and shocks on lithium-ion cells

Cited by 103 publications

References 10 publications

Study of the Mechanisms of Internal Short Circuit in a Li/Li Cell by Synchrotron X-ray Phase Contrast Tomography

Study of the Mechanisms of Internal Short Circuit in a Li/Li Cell by Synchrotron X-ray Phase Contrast Tomography

Comparative Research on RC Equivalent Circuit Models for Lithium-Ion Batteries of Electric Vehicles

Overcharge Study in Li4Ti5O12Based Lithium-Ion Pouch Cell

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Product

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Overcharge Study in Li₄Ti₅O₁₂Based Lithium-Ion Pouch Cell