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WO2010079857A1 - Unité pour générateur piézo-électrique et système de générateur piézo-électrique la comprenant - Google Patents

Unité pour générateur piézo-électrique et système de générateur piézo-électrique la comprenant Download PDF

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Publication number
WO2010079857A1
WO2010079857A1 PCT/KR2009/000401 KR2009000401W WO2010079857A1 WO 2010079857 A1 WO2010079857 A1 WO 2010079857A1 KR 2009000401 W KR2009000401 W KR 2009000401W WO 2010079857 A1 WO2010079857 A1 WO 2010079857A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
piezoelectric
piezoelectric layer
unit
area
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2009/000401
Other languages
English (en)
Korean (ko)
Inventor
한우석
백종후
이영진
정영훈
김창일
박신서
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SENBOOL Inc
Korea Institute of Ceramic Engineering and Technology KICET
Original Assignee
SENBOOL Inc
Korea Institute of Ceramic Engineering and Technology KICET
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SENBOOL Inc, Korea Institute of Ceramic Engineering and Technology KICET filed Critical SENBOOL Inc
Publication of WO2010079857A1 publication Critical patent/WO2010079857A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
    • H02N2/04—Constructional details
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/85—Piezoelectric or electrostrictive active materials

Definitions

  • the present invention relates to a piezoelectric generator unit and a piezoelectric generator system including the same.
  • the present invention relates to a generator system that produces electricity by bending a piezoelectric element by a pressure applied to a piezoelectric element and to a generator system combining the same. .
  • Piezoelectric materials have a variety of applications as transducers to convert mechanical energy into electrical energy.
  • a large number of materials including inorganic and organic materials are known as materials causing piezoelectric phenomenon.
  • a piezoelectric body is a device which generates a voltage by the force applied to the piezoelectric body, and changes the amount of voltage generated according to the magnitude of the applied force.
  • the present invention has been made in view of the above necessity.
  • a piezoelectric layer is provided on the front and rear surfaces of a substrate having elastic force, and an integrated circuit portion is formed on the piezoelectric layer.
  • the piezoelectric generator unit has a structure that can effectively transmit external vibration and shock while preventing the piezoelectric body from being damaged due to excessive impact and maintaining electrical connection between the external circuit and the piezoelectric body. Its purpose is to provide.
  • the piezoelectric generator unit is a substrate having a characteristic that is bent by pressure or vibration applied to the surface and the restoring force against the warp, and the first provided on the first surface of the substrate in a rectangular shape 1 piezoelectric layer, a circuit portion provided on one side of the first piezoelectric layer, and the first two piezoelectric layers including the circuit portion are arranged in a set, wherein each of the circuit portions has a rectangular shape so as to face in opposite directions to each other.
  • the first piezoelectric part arranged to face each other and the second surface of the substrate to be the opposite surface of the first surface, provided in a rectangular shape overlapping with the rest of the region except for the circuit portion of the first piezoelectric portion And a second piezoelectric layer.
  • the substrate is characterized in that the metal or plastic material is used, wherein the first piezoelectric layer or the second piezoelectric layer is Pb (Zr, Ti) O 3 + Pb (Zn, Nb) O 3 , Pb (Zr, Ti) O 3 + Pb (Ni, Nb) O 3 , Pb (Zr, Ti) O 3 + PVDF polymer, Pb (Zr, Ti) O 3 + silicon polymer and Pb (Zr, Ti) O 3 + epoxy polymer It is characterized by being formed of a material composed of at least any one of.
  • the piezoelectric generator unit is provided with a substrate having a characteristic that is bent by pressure or vibration applied to the surface and the restoring force against the warp, and a rectangular shape on the first surface of the substrate
  • the piezoelectric generator unit is provided with a substrate having a characteristic of bending due to pressure or vibration applied to a surface and restoring force against the warp, and a rectangular shape on the first surface of the substrate.
  • the piezoelectric generator unit has a substrate having a characteristic of bending due to pressure or vibration applied to a surface and a restoring force against the warp, and a first area on the first surface of the substrate.
  • the first piezoelectric layer which is formed in a singular or plural number, is formed to have a second area narrower than the first area on the second surface of the substrate, which is the opposite surface of the first surface, and partially with the first piezoelectric layer.
  • a second piezoelectric layer formed to overlap the entire region, and a circuit portion formed to overlap a portion or the entire region on the first piezoelectric layer which does not overlap with the region where the second piezoelectric layer is formed.
  • the piezoelectric generator system of the present invention is a substrate having a characteristic that is bent by the pressure or vibration applied to the surface and the restoring force against the warp, and the first surface of the substrate having a first area having a single or plural number And a first piezoelectric layer and a second area narrower than the first area on the second surface of the substrate, which is the opposite surface of the first surface, and overlaps the first piezoelectric layer with some or all of the area.
  • a unit for a piezoelectric generator including a second piezoelectric layer and a circuit portion formed to overlap a portion or the entire region on the first piezoelectric layer that does not overlap with the region where the second piezoelectric layer is formed as one unit unit, At least two or more unit units are arranged on the substrate so as to be spaced apart from each other, and circuit units provided in each unit unit Is connected is provided to accumulate voltage.
  • the substrate region adjacent to both ends of the unit unit is a moving portion
  • the substrate region adjacent to the central portion of the unit unit is a fixed portion
  • a lower plate including a upper plate including a pressure pin for transmitting pressure to the lower plate and a lower plate including a support pin for supporting a fixing portion of the substrate. Is characterized in that it is provided with two or more stacked in a vertical structure.
  • the piezoelectric generator unit is a bar-type substrate and a bar-type substrate having a characteristic that is bent by pressure or vibration applied to a surface and its restoring force against warpage
  • An electrode is a bar-type substrate and a bar-type substrate having a characteristic that is bent by pressure or vibration applied to a surface and its restoring force against warpage
  • the piezoelectric layer is formed in a circular shape
  • the neck (neck) is formed in pairs on both side walls of the bar-shaped substrate so as to be symmetrical based on the piezoelectric layer
  • the piezoelectric 1 to 3 pairs are formed per layer.
  • the present invention includes a piezoelectric generator system in which at least two unit units are stacked in a vertical structure when the piezoelectric generator unit is a unit unit.
  • the present invention improves the structure of the piezoelectric generator unit as described through the above embodiment, while effectively transmitting external vibration and shock to the piezoelectric body, while preventing excessive damage from being transmitted to the piezoelectric body, and at the same time prevents the By maintaining the electrical connection, the durability of the piezoelectric generator system can be improved, and the effect of improving the power generation efficiency is provided.
  • the piezoelectric generator system according to the present invention has a relatively simple internal structure and is easy to manufacture, and can be freely adjusted in size according to the situation, and its application range is wide.
  • the piezoelectric generator system according to the present invention since it can be simply buried in the form of a box can be utilized as a generator for the road, it provides an effect that can reduce the installation cost.
  • FIG. 1 is a plan view showing a piezoelectric generator unit according to a first embodiment of the present invention.
  • FIG. 2 is a plan view showing a piezoelectric generator system according to a first embodiment of the present invention.
  • FIG 3 is a plan view showing a piezoelectric generator unit according to a second embodiment of the present invention.
  • FIG. 4 is a plan view showing a piezoelectric generator system according to a second embodiment of the present invention.
  • FIG. 5 is a plan view showing a piezoelectric generator unit according to a third embodiment of the present invention.
  • FIG. 6 is a plan view showing a piezoelectric generator system according to a third embodiment of the present invention.
  • FIG. 7 is a sectional view showing a piezoelectric generator system according to the present invention.
  • FIG 8 and 9 are a plan view and a rear view showing a piezoelectric generator unit according to a fourth embodiment of the present invention.
  • FIG. 10 is a cross-sectional view showing a piezoelectric generator system according to a fourth embodiment of the present invention.
  • the piezoelectric generator unit includes a substrate having a characteristic that is bent by pressure or vibration applied to a surface and a restoring force against the warp, and a first or a plurality of substrates having a first area on a first surface of the substrate.
  • the second piezoelectric layer formed to have a second area narrower than the first area on the piezoelectric layer and the second surface of the substrate, which is the opposite surface of the first surface, and formed to overlap the first piezoelectric layer with some or all of the region.
  • a circuit part formed to overlap part or all of the area on the first piezoelectric layer which does not overlap with the area where the second piezoelectric layer is formed.
  • FIG. 1 is a plan view showing a piezoelectric generator unit according to a first embodiment of the present invention.
  • a substrate having a bending property by pressure or vibration applied to a surface and a restoring force against the bending thereof is provided.
  • a substrate provided with a metal or plastic material it is preferable to use a substrate provided with a metal or plastic material.
  • illustration of the substrate is omitted, and the base surface of the drawing may be the substrate. Details of this can be seen in FIG. 2.
  • first piezoelectric layers 100 and 120 provided in a rectangular shape on the first surface of the substrate are provided.
  • the first embodiment according to the present invention shows a case in which two first piezoelectric layers 100 and 120 are provided in one set.
  • circuit portions 140 and 150 are provided on one side of the two first piezoelectric layers 100 and 120, respectively, and the circuit portions 140 and 150 are arranged to face in opposite directions.
  • the second piezoelectric layer 130 is provided on the second surface of the substrate, which is the surface opposite to the first surface.
  • the second piezoelectric layer 130 may be provided in a rectangular shape overlapping with the remaining areas except for the circuit parts 140 and 150 in the first piezoelectric layers 100 and 120.
  • the size of each piezoelectric layer or the degree of overlap with each other may be applied differently according to the scale of each piezoelectric system, so the scope of protection of the present invention is not limited thereto.
  • the first piezoelectric layers 100 and 120 or the second piezoelectric layer 130 may include Pb (Zr, Ti) O 3 + Pb (Zn, Nb) O 3 , Pb (Zr, Ti) O 3 + Pb (Ni, Nb ) O 3 , Pb (Zr, Ti) O 3 + PVDF polymer, Pb (Zr, Ti) O 3 + silicon polymer and Pb (Zr, Ti) O 3 + epoxy polymer It is preferable.
  • FIG. 2 is a plan view showing a piezoelectric generator system according to a first embodiment of the present invention.
  • first piezoelectric layers 100 and 120 and second piezoelectric layers 130 are formed on both surfaces (front and rear surfaces) with the substrate 160 interposed therebetween.
  • circuit units 140 and 150 are formed on the first piezoelectric layers 100 and 120 to complete the piezoelectric generator unit.
  • the piezoelectric generator units are arranged in a matrix form, and the circuit portions of each unit are connected to each other so as to accumulate generated electricity.
  • the fixing unit 180 is formed on the substrate adjacent to the center of the piezoelectric generator unit, and the moving unit 170 is formed on the substrate adjacent to both edges of the unit.
  • the fixing unit 180 may be supported at the bottom of the substrate, and the movement unit 170 may be formed in a structure in which the substrate may be bent by a pressure pin.
  • the piezoelectric generator system formed as described above has a structure in which a plurality of piezoelectric generator units operate in accordance with a pressure applied to one region, thereby increasing power generation effects.
  • the units are uniformly distributed on the substrate, it is possible to effectively cope with the moving load across the substrate.
  • the piezoelectric layers are managed separately by the substrate rather than individually managed, it is possible to prevent the piezoelectric layers from being damaged by excessive impact.
  • FIG 3 is a plan view showing a piezoelectric generator unit according to a second embodiment of the present invention
  • Figure 4 is a plan view showing a piezoelectric generator system according to a second embodiment of the present invention.
  • the first piezoelectric layer 200 is provided in a rectangular shape on an upper surface of the first surface of the substrate 260, and a circuit portion is disposed on both sides of the first piezoelectric layer 200 in the longitudinal direction of the first piezoelectric layer 200. 240, 250).
  • a second piezoelectric element provided in a rectangular shape overlapping with the remaining regions of the first piezoelectric layer 200 except for the circuit portions 240 and 250.
  • the layer 230 is formed to complete the second piezoelectric generator unit according to the second embodiment of the present invention.
  • a moving part 270 is installed on the substrate 260 in the area adjacent to the circuit parts 240 and 250, and the area of the area adjacent to the center part of each unit.
  • the fixing part 280 is installed below the substrate 260 to complete the second piezoelectric generator system according to the second embodiment of the present invention.
  • FIG. 5 is a plan view showing a piezoelectric generator unit according to a third embodiment of the present invention
  • Figure 6 is a plan view showing a piezoelectric generator system according to a third embodiment of the present invention.
  • the first piezoelectric layer 300 is provided in a rectangular shape on the first surface of the substrate 360, and the circuit unit is disposed on one side of the first piezoelectric layer 300 in the longitudinal direction. 340 is provided.
  • the moving unit 370 is installed on the substrate 360 in the region adjacent to the circuit unit 340, and the substrate in the region adjacent to the center of each unit ( 360, a fixing part 380 is installed at the lower part to complete the third piezoelectric generator system according to the third embodiment of the present invention.
  • FIG. 7 is a cross-sectional view showing a piezoelectric generator system according to the present invention.
  • each of the substrates representing at least one selected from the first to third piezoelectric generator systems described above is provided with four layers of stacked structures 460a, 460b, 460c, and 460d, and the uppermost substrate 460a.
  • the upper portion of the upper plate 490 including a pressure pin 470 for transmitting pressure to the above-described moving part in accordance with the moving load.
  • a lower plate 495 including support pins 480 supporting the fixing portion of the substrate is provided under the lowermost substrate 460d.
  • the upper plate 490 and the lower plate 495 serves to protect each substrate.
  • FIG 8 and 9 are a plan view and a rear view showing a piezoelectric generator unit according to a fourth embodiment of the present invention.
  • FIG. 8 is a view of the piezoelectric generator unit viewed from above, and includes a bar substrate 560 having a bending property due to pressure or vibration applied to a surface and a restoring force against bending.
  • a circular piezoelectric layer 530 is formed on the front surface of the bar substrate 560.
  • the piezoelectric layer 530 is not necessarily limited to a circular shape, and may be formed in a singular or plural number.
  • a neck is provided to reduce the width of the bar substrate 560 adjacent to the piezoelectric layer 530 so that vibration of each piezoelectric layer 530 is smoothly performed.
  • the neck is formed in such a manner that some surfaces of the bar substrate 560 are removed to be symmetrical on both sides of the piezoelectric layer 530, and one piezoelectric layer 530 is formed. It is preferable that 1-3 pairs are formed with respect to.
  • the circuit unit 540 is formed in a region not overlapping with the piezoelectric layer 530 on the rear surface of the bar substrate 560, which is an opposite surface to the surface on which the piezoelectric layer 530 is formed. It is provided.
  • an electrode 535 connecting the piezoelectric layer 530 and the circuit unit 540 is provided.
  • the electrode 535 is provided in the form of crossing the bar-type substrate 560, but is not necessarily limited thereto.
  • the piezoelectric generator unit provided as described above is provided with a fixing part 580 in an area between the piezoelectric layers 530 so that the vibration can be concentrated only on the piezoelectric layer 530.
  • the circuit unit 540 is preferably formed in a region that does not overlap with the piezoelectric layer 530 in order to prevent damage by the vibration of the piezoelectric layer 530.
  • the piezoelectric generator unit as described above may build a piezoelectric generator system by stacking two or more sheets in a vertical structure as in the above-described embodiments.
  • FIG. 10 is a cross-sectional view showing a piezoelectric generator system according to a fourth embodiment of the present invention.
  • the first to fourth piezoelectric generator units 560a, 560b, 560c, and 560d having the same shape as those of FIGS. 8 and 9 are arranged in a vertical structure, and the fixing parts 580 are connected to each other.
  • Each of the first to fourth piezoelectric layers 530a, 530b, 530c, and 530d may be equally vibrated by the vibration.
  • a pressure pin 570 may be further provided between the piezoelectric layers so that the pressure applied from the upper portion may be effectively transmitted to the final fourth piezoelectric layer 530d.
  • power generated through the first to fourth piezoelectric layers 530a, 530b, 530c, and 530d may be collected from the first to fourth circuit units 540a, 540b, 540c, and 540d to supply power to various electric devices.
  • the piezoelectric generator unit and the piezoelectric generator system according to the present invention can effectively transmit external vibration and shock to the piezoelectric layer and at the same time maintain electrical connection of the circuit part stably, thereby improving durability of the piezoelectric generator system.

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  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

La présente invention porte sur une unité pour générateur piézo-électrique et sur un système de générateur piézo-électrique la comprenant. L'unité pour générateur piézo-électrique comprend : un substrat qui est fléchi de façon caractéristique par la pression ou vibration appliquée à une surface de celui-ci, et ayant une force de rappel s'opposant à la caractéristique cintrable ; une première couche piézo-électrique qui est formée sur une première surface du substrat, a une première aire, et est formée une fois ou plusieurs fois ; une seconde couche piézo-électrique qui est formée sur une seconde couche du substrat opposée à la première surface, ayant une seconde aire plus petite que la première aire, et formée de telle manière qu'une partie de son aire ou la totalité de son aire peut être chevauchée par la première couche piézo-électrique ; et une unité de circuit formée sur la première couche piézo-électrique qui n'est pas chevauchée par la région dans laquelle la seconde couche piézo-électrique est formée, de telle manière qu'une partie de son aire ou la totalité de son aire peut être chevauchée par la première couche piézo-électrique.
PCT/KR2009/000401 2009-01-12 2009-01-28 Unité pour générateur piézo-électrique et système de générateur piézo-électrique la comprenant Ceased WO2010079857A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020090002451A KR100894615B1 (ko) 2009-01-12 2009-01-12 압전 발전기용 유니트 및 이를 포함하는 압전 발전기 시스템
KR10-2009-0002451 2009-01-12

Publications (1)

Publication Number Publication Date
WO2010079857A1 true WO2010079857A1 (fr) 2010-07-15

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PCT/KR2009/000401 Ceased WO2010079857A1 (fr) 2009-01-12 2009-01-28 Unité pour générateur piézo-électrique et système de générateur piézo-électrique la comprenant

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KR (1) KR100894615B1 (fr)
WO (1) WO2010079857A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101336196B1 (ko) 2011-08-18 2013-12-05 한국과학기술원 생체용 나노제너레이터 및 그 제조방법
WO2012047071A2 (fr) * 2010-10-08 2012-04-12 한국과학기술원 Procédé pour la fabrication d'un nanogénérateur souple et nanogénérateur souple fabriqué par celui-ci
KR101340060B1 (ko) 2011-07-13 2013-12-10 한국과학기술원 플라스틱 나노제너레이터 및 그 제조방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05137359A (ja) * 1991-09-20 1993-06-01 Olympus Optical Co Ltd 超音波振動子および超音波駆動装置
JPH0870584A (ja) * 1994-08-30 1996-03-12 Nikon Corp 超音波モータとその製造方法
JPH09140169A (ja) * 1995-11-16 1997-05-27 Nikon Corp 振動アクチュエータ
JPH09182468A (ja) * 1995-12-28 1997-07-11 Nikon Corp 振動アクチュエータ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05137359A (ja) * 1991-09-20 1993-06-01 Olympus Optical Co Ltd 超音波振動子および超音波駆動装置
JPH0870584A (ja) * 1994-08-30 1996-03-12 Nikon Corp 超音波モータとその製造方法
JPH09140169A (ja) * 1995-11-16 1997-05-27 Nikon Corp 振動アクチュエータ
JPH09182468A (ja) * 1995-12-28 1997-07-11 Nikon Corp 振動アクチュエータ

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