PIEZOELECTRIC GENERATOR
First Claim
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1. A piezoelectric device, comprising:
- a piezoelectric element having a number of dipoles, wherein the dipoles are arranged such that, in an unactuated state of the piezoelectric element, a zero dipole moment is formed by the dipoles of the piezoelectric element and, in an actuated state of the piezoelectric element caused by a force, a net dipole moment is formed by the dipoles of the piezoelectric element; and
a pair of electrodes located about the piezoelectric element to conduct a current created by the net dipole moment formed by the dipoles of the piezoelectric element.
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Abstract
The present disclosure provides an ionic ring comprising a number of piezoelectric elements, a piezoelectric device including the ionic ring, and a piezoelectric generator including the ionic ring and host devices incorporating the piezoelectric generator. The piezoelectric generator can be used to generate energy on a portable electronic device in response to mechanical deformation. The generated energy can be used instead of a battery of the portable electronic device or can be used to charge the battery.
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Citations
23 Claims
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1. A piezoelectric device, comprising:
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a piezoelectric element having a number of dipoles, wherein the dipoles are arranged such that, in an unactuated state of the piezoelectric element, a zero dipole moment is formed by the dipoles of the piezoelectric element and, in an actuated state of the piezoelectric element caused by a force, a net dipole moment is formed by the dipoles of the piezoelectric element; and a pair of electrodes located about the piezoelectric element to conduct a current created by the net dipole moment formed by the dipoles of the piezoelectric element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A piezoelectric generator, comprising:
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a piezoelectric device, comprising; a piezoelectric element having a number of dipoles, wherein the dipoles are arranged such that, in an unactuated state of the piezoelectric element, a zero dipole moment is formed by the dipoles of the piezoelectric element and, in an actuated state of the piezoelectric element caused by a force, a net dipole moment is formed by the dipoles of the piezoelectric element; and a pair of electrodes located about the piezoelectric element to conduct a current created by the net dipole moment formed by the dipoles of the piezoelectric element; and an energy harvesting circuit connected to the piezoelectric device to capture and store electrical energy provided by the current. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. An ionic ring, comprising:
a number of piezoelectric elements received within a dielectric substrate, wherein the piezoelectric elements are arranged in a ring-shape in a dielectric substrate and are equally spaced apart from each other in the ring-shaped arrangement, each piezoelectric element having a number of dipoles, wherein the dipoles are arranged such that, in an unactuated state of the piezoelectric element, a zero dipole moment is formed by the dipoles of the piezoelectric element and, in an actuated state of the piezoelectric element caused by a force, a net dipole moment is formed by the dipoles of the piezoelectric element.
Specification