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.
|Numero di pagine||8|
|Rivista||Journal of Micromechanics and Microengineering|
|Stato di pubblicazione||Published - 2006|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Mechanics of Materials
- Mechanical Engineering
- Electrical and Electronic Engineering
Scaffaro, R., Guo, Z., Pereira, T., Nieh, S., Thomas Hahn, Scaffaro, R., & Arias, J. (2006). The Performance of Thin-Film Li-ion Batteries Under Flexural Deflection. Journal of Micromechanics and Microengineering, 16, 2714-2721.