Modeling, validation and analysis of mechanical stress generation and dimension changes of a pouch type high power Li-ion battery

Fu, Rujian; Xiao, Meng; Choe, Song-Yul

doi:10.1016/j.jpowsour.2012.09.096

Cited by 127 publications

(62 citation statements)

References 23 publications

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“…Due to their high specific energy, long cycle life and slow self-discharge, LIBs are considered to be suitable for electric and hybrid vehicle applications. For automobile industry, electrochemistry and mechanical integrity are important aspects to design the lithium-ion batteries from cell to module levels [1,2]. Similar to most electrochemical energy storage systems, the chemical compositions of the active materials change during the charge-discharge processes.…”

Section: Introductionmentioning

confidence: 99%

“…In comparison, the evolutions of stresses and strain in battery components have been investigated experimentally by only a few researchers using linear voltage displacement transducer (LVDT) [1], wafer curvature method [3] and twodimensional digital image correlations (2D DIC) [7,8]. The reported methods were still limited to the electrode level and are completely based on two-dimensional measurements.…”

Section: Introductionmentioning

confidence: 99%

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Real-time displacement and strain mappings of lithium-ion batteries using three-dimensional digital image correlation

Leung

Moreno

Masters

et al. 2014

Journal of Power Sources

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This work presents the first application of three-dimensional digital image correlation for real-time displacement and strain analysis of a pouch type lithium-ion battery. During the electrochemical charge-discharge processes, displacements in the x-, y-and z-directions vary at different states-of-charge (SOCs) attributed to the expansion and the contraction of the interior structure. The z-displacement is observed to develop and concentrate at the vicinity of the openings of the jelly-roll structure. By resolving the displacement components, the progression and distribution of the surface strains, including principal and von-Mises strains, are computed in the charge-discharge processes. It is shown that the dominant strains are up to 0.12 % in the rolling direction of the jelly-roll structure and distribute uniformly on the x-y plane over the surface.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Real-time displacement and strain mappings of lithium-ion batteries using three-dimensional digital image correlation

Leung

Moreno

Masters

et al. 2014

Journal of Power Sources

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“…However, there was no residual stress found during the electrochemical cycles for the LiBF 4 BMIM BF 4 cell. The root cause is because the electrolyte LiClO 4 PC was so unstable that it formed SEI oligomers on the Au surface during the electrochemical cycling.…”

Section: Solid Electrolyte Interfacementioning

confidence: 87%

“…The variable thickness of a battery is commonly used to represent its dimensional change, the measurement of which can be obtained by using a linear voltage displacement transformer (LVDT) [3][4][5], a dilatometer [6], a thickness gauge [7], or X-ray observation [8]. In order to obtain three-dimensional changes of a cycling Li-ion battery, Leung et al [9] presented the application of three-dimensional digital image correlation for real-time displacement and strain analysis of a pouch-type battery.…”

Section: Introductionmentioning

confidence: 99%

“…In order to obtain three-dimensional changes of a cycling Li-ion battery, Leung et al [9] presented the application of three-dimensional digital image correlation for real-time displacement and strain analysis of a pouch-type battery. The electrode active materials [3,10], state of charge (SOC) [4], operating temperature [5], electrolyte formulation [6], and design and construction [7,11] all affect battery expansion and contraction. In the micro aspects of the electrode deformation, the mechanical stress and strain correlate with the electrochemical effect.…”

Section: Introductionmentioning

confidence: 99%

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In Situ Stress Measurement Techniques on Li-ion Battery Electrodes: A Review

Cheng

Pecht

2017

Energies

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Li-ion batteries experience mechanical stress evolution due in part to Li intercalation into and de-intercalation out of the electrodes, ultimately resulting in performance degradation. In situ measurements of electrode stress can be used to analyze stress generation factors, verify mechanical deformation models, and validate degradation mechanisms. They can also be embedded in Li-ion battery management systems when stress sensors are either implanted in electrodes or attached on battery surfaces. This paper reviews in situ measurement methods of electrode stress based on optical principles, including digital image correlation, curvature measurement, and fiber optical sensors. Their experimental setups, principles, and applications are described and contrasted. This literature review summarizes the current status of these stress measurement methods for battery electrodes and discusses recent developments and trends.

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Developments in Dilatometry for Characterisation of Electrochemical Devices

Michael

Jervis

Brett

et al. 2021

Batteries & Supercaps

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Since the 1970s, electrochemical dilatometry (ECD) has been used to investigate the dilation of layered host materials due to the intercalation of guest ions, atoms or molecules, and has recently gained traction in application to various electrochemical devices, such as lithium‐ion batteries (LiBs), which have electrodes that undergo volume changes during cycling, resulting in particle cracking and electrode degradation. With resolution capabilities spanning tens of microns down to a few nanometres, dilatometry is a valuable tool in understanding how commonly used electrodes dilate and degrade and can therefore be of critical value in improving their performance. In recent years, there has been a plethora of studies using dilatometry as a monitoring tool for understanding operating performance in various electrochemical devices; however, to our knowledge, there has been no in‐depth review of this body of research to date. This paper seeks to address this by reviewing how dilatometry works and how it has been used for the characterisation of electrochemical energy storage devices.

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Modeling, validation and analysis of mechanical stress generation and dimension changes of a pouch type high power Li-ion battery

Cited by 127 publications

References 23 publications

Real-time displacement and strain mappings of lithium-ion batteries using three-dimensional digital image correlation

Real-time displacement and strain mappings of lithium-ion batteries using three-dimensional digital image correlation

In Situ Stress Measurement Techniques on Li-ion Battery Electrodes: A Review

Developments in Dilatometry for Characterisation of Electrochemical Devices

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