Journal
PLASTICS RUBBER AND COMPOSITES
Volume 43, Issue 3, Pages 98-104Publisher
MANEY PUBLISHING
DOI: 10.1179/1743289813Y.0000000064
Keywords
Multifunctional structure; Energy storage; Load bearing; Structural battery; Lightweight; Lithium polymer battery
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Integrating rechargeable battery cells with fibre reinforced polymer matrix composites is a promising technology to enable composite structures to concurrently carry load and store electric energy, thus significantly reducing weight at the system level. To develop a design criterion for structural battery composites, rechargeable lithium polymer battery cells were embedded into carbon fibre/epoxy matrix composite laminates, which were then subjected to tensile, flexural and compressive loading. The electric charging/discharging properties were measured at varying levels of applied loads. The results showed that degradation in battery performance, such as voltage and energy storage capacity, correlated well with the applied strain under three different loading conditions. Under compressive loading, battery cells, due to their multilayer construction, were unable to prevent buckling of composite face sheets due to the low lateral stiffness, leading to lower compressive strength than sandwich panels with foam core.
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