Title: Materials, devices and systems for piezoelectric energy harvesting and storage

Abstract

Materials and systems that enable high efficiency conversion of mechanical stress to electrical energy and methods of use thereof are described herein. The materials and systems are preferably used to provide power to medical devices implanted inside or used outside of a patient's body. For medical devices, the materials and systems convert electrical energy from the natural contractile and relaxation motion of a portion of a patient's body, such as the heart, lung and diaphragm, or via motion of body materials or fluids such as air, blood, urine, or stool. The materials and systems are capable of being bent, folded or otherwise stressed without fracturing and include piezoelectric materials on a flexible substrate. The materials and systems are preferably fashioned to be generally conformal with intimate apposition to complex surface topographies.

Inventors:

Dagdeviren, Canan; Rogers, John A.; Slepian, Marvin J.

Issue Date:

2018-11-27

Research Org.:

Univ. of Arizona, Tucson, AZ (United States); Univ. of Illinois at Urbana-Champaign, IL (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1531374

Patent Number(s):

10137306

Application Number:

15/111,447

Assignee:

The Arizona Board of Regents on Behalf of the University of Arizona (Tucson, AZ); The Board of Trustees of the University of Illinois (Urbana, IL)

Patent Classifications (CPCs):

A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61B - DIAGNOSIS

A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61N - ELECTROTHERAPY

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A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61B - DIAGNOSIS

A61B2560/0214 - of power generation or supply

A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61N - ELECTROTHERAPY

A61N1/3785 - {generated by biological activity or substance, e.g. body movement}

H - ELECTRICITY H02 - GENERATION H02N - ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR

H02N2/18 - producing electrical output from mechanical input, e.g. generators
H02N2/181 - {Circuits
H02N2/186 - {Vibration harvesters}

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DOE Contract Number:  

FG02-07ER46471

Resource Type:

Patent

Resource Relation:

Patent File Date: 2015-01-13

Country of Publication:

United States

Language:

English