Computational simulation of composite Structural batteries

Daniel B. Perez, Ryan L. Karkkainen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Structural battery composites are multifunctional materials that store electrical energy while also bearing structural loads. These materials are particularly applicable to electric automobiles, aircraft, spacecraft and other energy demanding and weight sensitive applications. The auxiliary electric charge from the material will provide power for onboard electronics and extend the range without decreasing the range or the payload capacity. Current structural battery designs include solid-state battery technology with woven carbon or glass fiber composites as a structural reinforcement. The computational finite element method (FEM) was used to simulate various material reinforcements to assess the optimal material selections and designs. Full scale panel laminates were analyzed using a 3 point bend test configuration to determine the flexural stiffness and strength of each structural battery laminate configuration. Fabrication artifacts due to the vacuum bagging composite fabrication technique were assessed to determine the necessary gasket material needed to maintain structural integrity. In addition, plain weave glass fiber/epoxy and unidirectional carbon fiber/epoxy tape were compared to determine the optimal material for interstitial layers between the multiple battery cells in a single panel. For the case of a gasket around the battery layers in the panel, a parametric study was developed to determine the effects of different possible gasket materials. In addition, a micromechanics approach was utilized to analyze the conductivity of carbon fiber/epoxy composites for possible use in the solid-state battery for improved energy density and structural performance. Incorporation of high conductivity epoxy as a matrix in a carbon fiber/epoxy composite significantly increases the overall electrical performance of the composite to the point that integration into the solid-state battery unit cell is possible.

Original languageEnglish (US)
Title of host publication32nd Technical Conference of the American Society for Composites 2017
EditorsJohnathan Goodsell, Wenbin Yu, R. Byron Pipes
PublisherDEStech Publications Inc.
Pages1949-1963
Number of pages15
ISBN (Electronic)9781510853065
StatePublished - 2017
Event32nd Technical Conference of the American Society for Composites 2017 - West Lafayette, United States
Duration: Oct 23 2017Oct 25 2017

Publication series

Name32nd Technical Conference of the American Society for Composites 2017
Volume3

Other

Other32nd Technical Conference of the American Society for Composites 2017
Country/TerritoryUnited States
CityWest Lafayette
Period10/23/1710/25/17

ASJC Scopus subject areas

  • Ceramics and Composites

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