PIEZOELECTRIC ENERGY HARVESTOR AND PIEZOELETRIC SENSOR

Hereinafter, with reference to the drawing objects of the present invention in the embodiment detailed with respect to each other. The present invention refers to various modification may have bar can apply in various forms, in the embodiment herein detailed drawing and example are specific to broadcast receiver. However this particular disclosure be but is defined with respect to the present invention form, all changing range of idea and techniques of the present invention, including the water to replacement should understood to evenly. Each drawing are described as well as a component while similar references in a similar.

The term used in application specific embodiment is only used to account for example defining the present invention intending to be is endured. It is apparent that a single representation of the differently in order not providing language translators, comprising plurality of representation. In the application, the term "comprising" or "having disclosed" specification of articles feature, step, operation, component, piece or specify a combination not present included, another aspect of one or more moveable step, operation, component, piece or a combination of pre-times the number should not understood to presence or additional possibility.

On the basis of the present invention hereinafter described with respect to the piezoelectric energy harvester in to it should,, like when such a piezoelectric energy low hemp cloth [su it shakes off capacitor or capacitor for storing energy corresponding to applications, piezoelectric energy structure is output through a voltage electrical energy detected by the main process from plural piezoelectric sensor as used as a sensing device.

When a piezoelectric energy sensor, piezoelectric energy structure is sensing unit of the present invention may correspond to (sensing) and, through the magnitude of the voltage and changes of the present invention piezoelectric energy structures installed in sensing is set equal to or higher than.

In the embodiment according to one of the present invention piezoelectric energy sensor includes a sensor part; number control unit; and an output and, through a piezoelectric energy structures by the sensor voltage (power energy) senses the size of and changes, the sensor outputs results to output decoded by the sensor processor are disclosed.

In piezoelectric energy harvester of the present invention will described hereinafter based on content, piezoelectric energy sensor piezoelectric energy using piezoelectric energy structure portion description of sensors and sensing a change in magnitude of the voltage and therefore the principle and structure utilized which have redundant description is to omit the two sequences.

In the embodiment according to Figure 2 shows a structure of the present invention also applies when one piezoelectric energy . In the embodiment according to piezoelectric energy low hemp cloth [su it shakes off one of the present invention, elastic substrate (10); support (20); and piezoelectric material sheet structure (30) having a predetermined wavelength.

In addition, in the embodiment according to one of the present invention piezoelectric energy low hemp cloth [su it shakes off additionally mass (40) further comprises a can.

Elastic substrate (10) is extending the length of the longitudinal (x direction). Elastic substrate (10) is specifically defined if a user without using material having an elastic force can be, for example, plate - spring, SUS, aluminum, ceramic films can be used. Elastic substrate end (mass disposed end) is disposed public number 1, number 2 remaining end support (20) supported by the substrate.

Support (20) also comprises a substrate (10) are arranged in a facing end of number 1 number 1 number 2 structure supporting the ends of a public end are disclosed. Support (20) on the elastic substrate (10) and is placed and fixed end of number 2, number 1 (Y direction) to remain airborne for gravity to the support end disposed movement can be.

Mass (40) also comprises a substrate (10) placed on a face of the top and the at least one of the, elastic substrate (10) end side of number 1 disposed thereon. In Figure 2 includes a mass (40) elastic substrate (10) disposed on the lower surface of the shown example through a browser substrate. Not shown but not limited to, mass (40) is may be disposed on the upper surface, the upper and lower surfaces to be assigned respectively to 2 the dog may be filled. Mass (40) also comprises a substrate (10) at the end of number 1 x be filled with elastic based on a plane extending along a rod-like disapproval. 2 Also shown in the maintenance work, respectively of mass (140) is arranged with a plurality of number 1 end 106 disapproval.

Mass (140) the elastic substrate (111) arranged on the end of number 1 and number 2 end support (200) is fixed to the own low hemp cloth [su (301) with driving device by vibration and mass (140) by elastic substrate (111) in accordance with the energy as the is vertically oscillating in the arranging direction. Mass filament along a part of its weight is satisfactory, a self-material is simplified and number one isn't any time.

Piezoelectric material sheet structure (30) also comprises a substrate (10) one or more of the top surface and disposed thereon. Piezoelectric material sheet structure (30) disposed over the entire range and the lower side a gap also comprises a disapproval. On the other hand, such a piezoelectric material sheet structure (30) is as in Figure 2 the, end number 1 can be applying elastic substrate. However B region also strain (strain) is generated strains such elastic substrate is a part (10) along a longitudinal direction (x direction) generated. The piezoelectric material sheet structure such B even region (30) is arranged for generating the electrical energy to enable the collection can. On the other hand, piezoelectric material sheet structure (30) includes a region of the full-area substrate disposed B elastic as well as disapproval.

In the embodiment according to Figure 3 shows a piezoelectric material sheet to explain the structure of the present invention also one dB are disclosed. Piezoelectric material sheet structure as shown in Figure 3, piezoelectric material sheet (PZ 1); said piezoelectric device for sheets made of placed in lower base electrodes disposed patterns (110, 120, 210, 220) comprises.

Piezoelectric material sheet piezoelectric ceramic or ceramic/polymer composites preferably formed. In addition, electrode patterns deposition/etching, laser plating, screen printing, inkjet printing can be formed by sputtering or evaporation.

The electrode patterns each comprises number 1 electrode pattern (110, 120) and number 2 electrode pattern (210, 220) coated, electrode pattern and said number 1 and number 2 electrode pattern is electrically insulated, each (interdigitated) engage one another and forming a plurality of pixel electrode, said electrode patterns are vertically disposed thereon to the projection of the same type.

Electrode patterns (the D1 direction in Figure 3) extending along the longitudinal direction of the elastic substrate body electrode (110, 210) and said elastic base body electrode include light emitting diodes (D1 direction perpendicular to) the length of which is branched into a plurality of sub-electrodes and spaced apart from each other (120, 220) comprises. Number 1 and number 2 electrode pattern of electrodes are spaced apart from each other engaged sub-electrode electrode pattern while the airscrew.

In Figure 2 such a piezoelectric material sheet elastic substrate (10) parallel to the length of said body electrodes (110, 210) which is arranged to be located, as piezoelectric material sheet carry electrode patterns along the length of the polling (poling) and through the substrate, the elastic substrate is by oscillating up and down, mechanical deformation of said piezoelectric material sheet structure in accordance with the piezoelectric effect whereby the power collecting.

4 To 5 is also a longitudinal direction of the cross-sectional drawing of Figure 3 in the embodiment shown substrate. An upper surface lower than polling by the process in Figure 4 as the longitudinal direction of a polled combustion chamber. To prevent electrodes shown in Figure 4 as if they were to be freely bent, this for drawing and description may also include indicating number chamber such as 5 disposed, as shown but this space between electrode for instructing one drawing only disclosed.

In the case of piezoelectric material sheet structure of the present invention piezoelectric material sheet structure elastic base engaging parts to make the additional electrode is directly against the elastic substrate including piezoelectric material preferably sheet metal layers.

In the embodiment according to Figure 6 shows a piezoelectric material sheet of the present invention also decodes a cross-sectional drawing in additional structure. In the embodiment according to the lower electrode of the present invention lower elastic substrate directly one piezoelectric material sheet structure (10) on to make against the additional piezoelectric material included in the sheet layers comprising (AL) can be.

If elastic deformation of the elastic substrate directly brought into contact with the lower electrode guide substrate occur directly rather than being transferred to the piezoelectric material sheet strain after bio-generating material that is delivered to the portion of piezoelectric material sheet is coupled piezoelectric material sheet number exists in the strain measured disclosed. In order to solve the same piezoelectric material sheet layer (AL) and through additional piezoelectric material sheet to direct delivery of preferably elastic substrate of strain.

In Figure 6 the piezo material sheet structure on piezoelectric material sheet (PZ1) additional piezoelectric material sheet layer (AL) is shown as being separated from one another but, this description will be shown for is received, chamber number in use by means of sintering after lamination using small number so one structure to be coated.

7A and 7b is one in the embodiment according to piezoelectric energy harvester of the present invention also can be by drawing energy collecting a scene are disclosed.

Also 7a such as elastic substrate (10) after the elastic substrate is disposed on a surface vibrate, and a proper elastic substrate also 7a below in (10) is 1 - 2 - 3 - 4 position>>>sequentially varied with each other. This sequential elastic substrate (10) such as deformation of the time (T) (V) is also 7b according to collection of electrical energy generated. In the embodiment of the elastic substrate also 7a (10) deposited on top of the substrate 1 is connected to the piezoelectric material sheet structure is increased by amount since elastic at the location at which represents the value of electrical energy is generated, the location at which the elastic substrate 3 by piezoelectric material sheet structure is negative shrink represents the value of electrical energy is generated.

8A and 8b is one in the embodiment according to elastic substrate of the present invention also piezoelectric energy low hemp cloth [su when the cover is disposed in the embodiment of both upper and lower surfaces of piezoelectric material sheet structure is shown as follows.

Such as piezoelectric material sheet 8a also number 1 located and the lower side both elastic structure based on when the cover is disposed, for collecting electrical energy to reduce positions disposed on the piezoelectric material included in the sheet structure connected electrode placement and piezoelectric material sheet structure rotatably connected to a lower electrode placement is preferably staggered.

I.e., top electrode placement to reduce a piezoelectric material sheet structure (110) and the lower side piezoelectric material sheet structure (120) each connected electrical energy is collected with each other. I.e., for collecting electrical energy to reduce positions disposed on the piezoelectric material included in the sheet structure connected electrode placement and piezoelectric material sheet structure rotatably connected to a lower electrode placement is preferably staggered. However taught of Figure 7 in the embodiment of Figure 8 in the embodiment and by the upper surface of the piezoelectric material sheet is settled on the elastic substrate vibrates when likewise even when lower surface of piezoelectric material sheet being generated, and a lower surface opposite the polarity of the electric energy generated in the piezoelectric material sheet which will be collected by the propeller type fan having an energy consumption unit's oldest door number as well. Thus, as in the present invention piezoelectric material sheet structure disposed on the upper surface and lower electrode placement piezoelectric material sheet structure is connected to a mutual electrode placement, as 8b also in greater collection of electrical energy can be reinforced by means of interference and the lower frame.

In dashed lines comprises a piezo-electric material sheet structure 8b also upper and lower surfaces of each electrode position even cases where cancellation interference occurs so and in which case it can be connected, as described in the present invention by using the interference by reinforcing mutual electrode sites such as electric energy collection is in the form of soft deficiency in accordance with the filar.

Even of Figure 8 in the embodiment described the same as those on the upper and lower surfaces of piezo-sheet structure in both piezoelectric material sheet structure elastic substrate to make the elastic base engaging parts electrode directly against the additional sheet metal layers preferably including piezoelectric material.

In the embodiment according to of the present invention until now in piezoelectric material sheet structure of piezo-sheet 1 when one piezoelectric energy low hemp cloth [su by the barrier metals in the embodiment when the personal, hereinafter that when disposed in at least one of piezoelectric material sheet in the embodiment 2 is described to you.

At least one basic principle even includes a non-piezoelectric material sheet 2 disposed and related to it should, omitting redundant taught above all, for the portion of the plurality of piezoelectric material sheet is arranged to point only generally described the two sequences.

Figure 9 shows a piezoelectric material sheet to explain the structure of the present invention also one in the embodiment according to sensors mounted thereon are disclosed. In the present invention two 2n (n is an integer of 1 or more) piezoelectric material sheet structure as measured up and down each other piezoelectric material sheet, each of said 2n electrode patterns is arranged in lower base placed at a side of piezoelectric material, said piezoelectric device for sheets made of placed at said electrode patterns each comprises a number 1 electrode pattern and number 2 disposed in lower base coated electrode pattern, said number 1 and number 2 electrode pattern and electrically insulated electrode pattern includes, (interdigitated) electrode patterns each engage one another in a plurality of pixel electrode, said electrode patterns are vertically arranged to be the projection of the same type structure.

In this case said n-a 1 upper surface of the second piezoelectric material sheet to electrodes located pattern disposed on the second piezoelectric material sheet said n-a 1 n disposed electrode pattern includes second piezoelectric device for sheets made of in lower base even pattern with each other.

In the embodiment of 10 to 15 also in description below for each electrode pattern disposed on the piezoelectric material sheet 2 among a total opening of patterns disposed in the embodiment 3 is capable of a disclosure, illustrating the reactions in the embodiment hereinafter on the basis of the two sequences.

In the embodiment according to one of the present invention piezoelectric material sheet structure shown in Figure 9, such as a pneumatic device with two piezoelectric material sheet and overlapping each other, said upper surface of the two piezoelectric material sheet, loaded, and between the electrode patterns is arranged, said electrode patterns are coated electrode pattern number 1 electrode pattern and number 2, electrically insulated electrode pattern includes said number 1 and number 2 electrode pattern and, (interdigitated) electrode patterns each engage one another in a plurality of pixel electrode, said electrode patterns are the same type vertically the projection is disposed to, said two piezoelectric device for sheets made of piezoelectric active region polarization direction are opposite to each other disclosed.

The reference also 9, one in the embodiment according to piezoelectric material structure of the present invention with two piezoelectric material sheet (PZ1, PZ2), electrode patterns (110, 120, 210, 220, 310, 320) comprises.

With two piezoelectric material sheet (PZ1, PZ2) that the piezo material, particularly not limited. Said piezoelectric material of one example, piezoelectric ceramic, ceramic/polymer composites or the like is cited.

Electrode patterns (110, 120, 210, 220, 310, 320) is number 1 electrode pattern (110, 210, 310) and number 2 electrode pattern (120, 220, 320) comprise a pair of coated, electrode pattern and said number 1 and number 2 electrode pattern is electrically insulated, each (interdigitated) engage one another and forming a plurality of electrodes which comprises. As in Figure 1 the (110, 120) pairs, (210, 220) pairs, (310, 320) comprising the pair of electrode composed of the pattern.

In coplanar, electrode patterns arranged to engage one another in number 1 (110, 210, 310) number 2 and electrode patterns (120, 220, 320) number 1 and number 2 piezoelectric material sheet between spaced apart region (PZ1, PZ2) piezoelectric region with each other. Piezoelectric active region 11 also carry at description below with reference to the polarization direction related to the public telephone network.

Number 1 electrode patterns (110, 210, 310) is number 1 and number 2 (D2) (D1) direction from an electrode body extending body which is branched into spaced apart each other comprises the sub-electrode direction. Number 2 electrode patterns (120, 220, 320) and identical to each body electrode and sub-electrodes, electrode patterns in coplanar number 2 (120, 220, 320) electron gun for a number 1 electrode patterns (110, 210, 310) of electrodes and number 1 alternately along direction (D1) are prevented.

Number 1 piezoelectric material sheet (PZ1) includes a pair of electrode patterns (110, 120) and a pair of electrode patterns (210, 220) disposed between, number 2 (PZ2) piezoelectric material sheet includes a pair of electrode patterns (210, 220) and a pair of electrode patterns (310, 320) disposed thereon between.

On the other hand in Figure 10 is obtained by the piezoelectric material sheet (PZ1, PZ2) but is shown as spaced apart from each other, two piezoelectric material sheet is shown as being spaced to illustrate, chamber number include two piezoelectric material sheet is positioned consisting of laminations in a, can be separated from not existed.

11 To 12 also includes a cross-sectional drawing cutting along the line of Figure 9 I a-I are disclosed.

The 11 and 12 also with reference also 9, number 1 piezoelectric material sheet (PZ1) piezoelectric active region number 2 piezoelectric material sheet (PZ2) polarization direction of polarization direction is opposite piezoelectric active region are disclosed.

Number 1 and number 2 in Figure 11 is piezoelectric material sheet (PZ1) piezoelectric material sheet (PZ2) that disclosure each electrode upper surface below the bottom of the sea, this polling (poling) number 2 number 2 piezoelectric device for sheets made of the polarizing directions of the piezoelectric material sheet in reducing voltage direction pushes to explain the one or more inexpensive price is received, chamber number 12 also include such as has the shape.

In 11 and 12 also, exhibits polarization direction is dashed lines arrows. In one in the embodiment, piezoelectric material sheet structure in region A, number 1 number 1 of piezoelectric material sheet (PZ1) side being opposite each other (loaded) number 1 electrode pattern (110) and one sub-electrode electrode pattern number 2 (120) between sub-electrode polarization orientations of piezoelectric active region is number 1. In relevant area A, number 1 number 2 (top) side of piezoelectric material sheet (PZ1) being opposite each other electrode pattern number 1 (210) and one sub-electrode electrode pattern number 2 (220) between sub-electrode polarization orientations of piezoelectric active region also number 1.

While, in relevant area A, number 2 number 1 of piezoelectric material sheet (PZ2) side being opposite each other (loaded) number 1 electrode pattern (210) and one sub-electrode electrode pattern number 2 (320) between opposed piezoelectric active region is one sub-electrode polarization said number 1 number 2 polarization orientations. In addition, in relevant area A, number 2 (top) side of piezoelectric material sheet (PZ2) number 2 number 1 electrode pattern being opposite each other (310) and one sub-electrode electrode pattern number 2 (320) between sub-electrode polarization orientations of piezoelectric active region is number 2. The, area in A, number 1 piezoelectric material sheet (PZ1) piezoelectric active region is a specific direction polarization number 1, number 2 has the polarizing directions of the piezoelectric material sheet (PZ2) piezoelectric active region is number 2.

In B A region adjacent region, number 1 piezoelectric material sheet (PZ1) being opposite each other side of number 1 number 1 electrode pattern (110) and one sub-electrode electrode pattern number 2 (120) between sub-electrode polarization orientations of piezoelectric active region is number 2. In relevant area A, number 1 number 2 number 1 electrode pattern being opposite each other (PZ1) side of piezoelectric material sheet (210) and one sub-electrode electrode pattern number 2 (220) between sub-electrode polarization orientations of piezoelectric active region also number 2.

While, in relevant area B, piezoelectric material sheet (PZ2) being opposite each other side of number 1 number 2 number 1 electrode pattern (210) and one sub-electrode electrode pattern number 2 (220) between sub-electrode polarization orientations of piezoelectric active region is number 1. In addition, in relevant area B, number 2 (PZ2) side being opposite each other piezoelectric material sheet of number 2 number 1 electrode pattern (310) and one sub-electrode electrode pattern number 2 (320) between sub-electrode polarization orientations of piezoelectric active region is number 1. The, area in B, piezoelectric (PZ1) piezoelectric active region is a specific direction polarization number 2 number 1, number 2 (PZ2) piezoelectric active region is number 1 has the polarizing directions of the piezoelectric body.

Area A and area B described respectively such as, in the present invention piezoelectric material structure piezoelectric activity in one zone, number 1 piezoelectric material sheet (PZ1) piezoelectric active region polarization direction (D1) number 1 number 2 piezoelectric material sheet (PZ2) polarization direction is the same direction axis on the piezoelectric active region opposite to each other are disclosed (i.e., stacked above and sandwiching each number 1 piezoelectric material sheet in the area of the regions and the piezoelectric material sheet opposite polarization direction by number 2). The polarization direction is number 1 and number 2 piezoelectric material sheet (PZ1, PZ2) polling of determined in process (poling process).

In one in the embodiment, a pair of electrode patterns polling process is number 1 (110, 210) (-) is a pair of number 2 applies a voltage to a lower electrode patterns (120, 220) is (+) applies a first voltage. Then, a pair of number 1 electrode patterns (210, 310) is (+) applies a voltage, electrode patterns a pair of number 2 (220, 320) is (-) can be performed by applying a voltage across polling. The, (+) and (-) voltage is applied to each voltage into a DC voltage. The, number 1 and number 2 piezoelectric material sheet such as 11 and 12 also representing such as the polarization direction (PZ1, PZ2) piezoelectric active region comprises polarizing means can be disclosed.

Figure 13 shows a piezoelectric material sheet structure is polling in the process of the present invention finally also one in the embodiment according to the polarized indicative of a direction are disclosed. In this way two piezoelectric device for sheets made of piezoelectric active region opposite polarization direction is not necessarily but are not necessarily, preferably greater energy collection order are oppositely biased, cause the elastic substrate by ken [thil lever types of structures may be through, said piezoelectric material seat structure for switching mechanical deformation of the piezoelectric effect whereby power to guarantee equal to or higher than.

As the piezoelectric device for sheets made of piezoelectric active region 13 also in Figure 14 and Figure 1 and right sides opposite the polarizing directions of the piezoelectric material sheet in the case of structure, such as flexure also 14 through the substrate (10) is provided in the base member by elastic mechanical transfer member and deep-seated (PZ1) number 1 closest to the piezoelectric material sheet, then the mechanical strain of the piezoelectric material sheet (PZ1) number 1 number 2 piezoelectric material sheet (PZ2) will be less than equal to occur. In addition, such as flexure through the substrate 15 also near the mechanical strain of less or more piezoelectric material sheet (PZ1) number 1, number 2 piezoelectric material sheet (PZ2) then the mechanical strain of greater than or more piezoelectric material sheet (PZ1) number 1 to be coated.

The 2n are that when disposed of piezoelectric material sheet, each of said piezoelectric material disposed over the active region disposed below the piezoelectric sheets of piezoelectric material n polarization direction n active region opposite the polarizing directions of the piezoelectric sheets of piezoelectric material preferably.

On the other hand, when a plurality of piezoelectric material sheets, a plurality of piezoelectric material sheet and polarization piezoelectric material sheet structure after sintering said piezoelectric material sheet structure is encoded sequentially arranged via small number. In addition, a plurality of piezoelectric material sheet is stacked, preferably electrically connected in parallel to one another. The piezoelectric energy vibration converted into electrical energy is typically narrow vibration within the frequency range since vibration frequency power output to a value only by power output appearing anti-face width in relation to the external door number appearing in the form narrow peaks may be are disclosed. However piezoelectric material sheet from the substrate represented by the formula 2 connected in parallel ends of a piezoelectric device for sheets made of frequency according to some electrical energy output values and relatively located distally on and the hereinafter, the broadcast range of an inverted peak graph one output value, the reliability and stability in collecting electrical energy can be. I.e., piezoelectric energy low hemp cloth [su it shakes off the present invention according to a plurality of piezoelectric laminated structure be implemented so as high power output device has an increasing a dynamic range of vibration frequency stably realize energy low hemp cloth [su.

Figure 17 shows a piezoelectric material sheet of the present invention also 16 and also one in the embodiment according to when using said electrode structure using said electrode structure according to the prior art comparison to compare when the piezoelectric material sheet are disclosed.

A laminated structure of the existing method IDE such as shown on drawing of Figure 16 up and down rather than bulk piezoelectric ceramic electrically connected was being implemented. Since IDE number into a multitude of piezoelectric material sheet structure comprising a structure engages the polling process even if that is difficult to implementing IDE pattern longitudinally through (33 mode) are very low polarization density formed by polling (longitudinal mode) using various longitudinal mode piezoelectric sensor, piezoelectric transducers, piezoelectric actuator, piezoelectric energy low hemp cloth [su since the audio output performance applications are disclosed. The, prior art as is generally used in an existing pipeline 31 mode. However, in the present invention described above as if it were in the form of various market IDE pattern thin films laminated piezoelectric material sheet structure can be implemented simultaneously sintering the same has been fired. In particular crystallographic sintered material conductivity by simply pushes the laminated only by that the transient additional unequal the combustion chamber. As a result, in the case of piezoelectric material sheet structure of the present invention maximize density is possible to provide a polarization direction (drawing of Figure 16 below confirming) 33 mode, the application enables the implementation the various piezoelectric to superior performance are disclosed.

In addition, as shown in Figure 17, elastic film laminated structure/cantilever like structure piezoelectric film, piezoelectric film elastic substrate current IDE structure of Figure 17 is formed when stuck when an elastomeric substrate such as piezoelectric top then a top drawing only IDE large deformation (strain) but only when piezoelectric film bonded piezoelectric polymer performance implementations are a CPU and a low polarization density induction, when drawing of Figure 17 is formed among the individual elastic body such as an upper or lower part both IDE IDE piezoelectric substrate when implementing piezoelectric conversion performance at a low area type is difficult due to induction furnace door number can be as well. The present invention ultimately lower drawing of Figure 17 such as an upper or lower part piezoelectric substrate is formed or bonded IDE according both elastic body inserted into IDE (embedding) the elastic body includes a piezoelectric substrate of the upper bonded three-dimensional by very good piezoelectric conversion performance because it has a polarization density is equal to expect.

In the embodiment of the present invention the present invention is any person with skill in the art number for description is to number encoded in the art embodiment or using a ball. In the embodiment of the present invention are apparent in the art to various modifications for such person with skill in the art will, defined herein in the embodiment of the present invention are made without deviating from the general principle can be applied to other range. Thus, the present invention refers to number herein are confined within the rather than in the embodiment, the number principles and novel features herein will be interpreted consistent most wide sense range.