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US 9,431,929 B2Granted
Asynchronous fluidic impulse strain-based energy harvesting system
AssigneeUniversity of Florida Research Foundation, Inc.
InventorsToshikazu Nishida, David G. Bloomquist
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Abstract
Energy harvesting systems and devices are provided that harvest energy from external asynchronous force impulses using fluidic force transfer of the external force impulses to a plurality of compliant piezoelectric layers that seal a corresponding plurality of inner cavities. Each inner cavity can contain a compressible gas. Direct fluidic force transfer can be accomplished via a compressible or incompressible fluid between an external cover and the compliant piezoelectric layers.
Claims25
An asynchronous fluidic impulse-based energy harvester comprising:
- a first cavity layer comprising a plurality of open cavities;
- a piezoelectric membrane layer on the first cavity layer and sealing each of the open cavities;
- a fluid layer on the piezoelectric membrane layer confined by a second cavity layer;
- a cover layer on the fluid layer;
- and
- a passivation layer disposed between the piezoelectric membrane layer and the fluid layer,
- wherein the fluid layer is a continuous layer that covers the plurality of open cavities.
4 more elements
Dependencies are inferred from the claim text.