The Performance of Thin-Film Li-ion Batteries Under Flexural Deflection

Roberto Scaffaro, Roberto Scaffaro, Jeff Arias, Zhanhu Guo, Tony Pereira, Simon Nieh, Thomas Hahn

Risultato della ricerca: Article

21 Citazioni (Scopus)

Abstract

A method is introduced to study the effects of flexural deformation on the electrical performance of thin-film lithium-ion batteries. Flexural deformation of thin films is of interest to engineers for applications that can be effective in conformal spaces in conjunction with multi-functional composite laminates in structural members under mechanical deflections such as thin airfoils used in unmanned aerial vehicles (UAVs). A test fixture was designed and built using rapid prototyping techniques. A baseline reference charge/discharge cycle was initially obtained with the device in its un-flexed state, in order to later contrast the performance of the thin-film battery when subjected to deflections. Progressively larger deflections were introduced to the device starting with its un-deformed state. The cord flexure was applied in increments of 1.3% flex ratio, up to a maximum of 7.9%. At each successive increment, a complete charge/discharge cycle was performed. Up to a flex ratio of 1.3%, no effects of mechanical flexure on battery performance were observed, and the device performed reliably and predictably. Failure occurred at deflections above 1.3% flex ratio.
Lingua originaleEnglish
pagine (da-a)2714-2721
Numero di pagine8
RivistaJournal of Micromechanics and Microengineering
Volume16
Stato di pubblicazionePublished - 2006

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Computational Mechanics
  • Mechanics of Materials
  • Materials Science(all)

Cita questo

Scaffaro, R., Scaffaro, R., Arias, J., Guo, Z., Pereira, T., Nieh, S., & Thomas Hahn (2006). The Performance of Thin-Film Li-ion Batteries Under Flexural Deflection. Journal of Micromechanics and Microengineering, 16, 2714-2721.

The Performance of Thin-Film Li-ion Batteries Under Flexural Deflection. / Scaffaro, Roberto; Scaffaro, Roberto; Arias, Jeff; Guo, Zhanhu; Pereira, Tony; Nieh, Simon; Thomas Hahn.

In: Journal of Micromechanics and Microengineering, Vol. 16, 2006, pag. 2714-2721.

Risultato della ricerca: Article

Scaffaro, R, Scaffaro, R, Arias, J, Guo, Z, Pereira, T, Nieh, S & Thomas Hahn 2006, 'The Performance of Thin-Film Li-ion Batteries Under Flexural Deflection', Journal of Micromechanics and Microengineering, vol. 16, pagg. 2714-2721.
Scaffaro R, Scaffaro R, Arias J, Guo Z, Pereira T, Nieh S e altri. The Performance of Thin-Film Li-ion Batteries Under Flexural Deflection. Journal of Micromechanics and Microengineering. 2006;16:2714-2721.
Scaffaro, Roberto ; Scaffaro, Roberto ; Arias, Jeff ; Guo, Zhanhu ; Pereira, Tony ; Nieh, Simon ; Thomas Hahn. / The Performance of Thin-Film Li-ion Batteries Under Flexural Deflection. In: Journal of Micromechanics and Microengineering. 2006 ; Vol. 16. pagg. 2714-2721.
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AU - Nieh, Simon

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AB - A method is introduced to study the effects of flexural deformation on the electrical performance of thin-film lithium-ion batteries. Flexural deformation of thin films is of interest to engineers for applications that can be effective in conformal spaces in conjunction with multi-functional composite laminates in structural members under mechanical deflections such as thin airfoils used in unmanned aerial vehicles (UAVs). A test fixture was designed and built using rapid prototyping techniques. A baseline reference charge/discharge cycle was initially obtained with the device in its un-flexed state, in order to later contrast the performance of the thin-film battery when subjected to deflections. Progressively larger deflections were introduced to the device starting with its un-deformed state. The cord flexure was applied in increments of 1.3% flex ratio, up to a maximum of 7.9%. At each successive increment, a complete charge/discharge cycle was performed. Up to a flex ratio of 1.3%, no effects of mechanical flexure on battery performance were observed, and the device performed reliably and predictably. Failure occurred at deflections above 1.3% flex ratio.

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