CN102113200A - Apparatus and method for generating electricity using piezoelectric material - Google Patents
Apparatus and method for generating electricity using piezoelectric material Download PDFInfo
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- CN102113200A CN102113200A CN2009800001209A CN200980000120A CN102113200A CN 102113200 A CN102113200 A CN 102113200A CN 2009800001209 A CN2009800001209 A CN 2009800001209A CN 200980000120 A CN200980000120 A CN 200980000120A CN 102113200 A CN102113200 A CN 102113200A
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- 230000005611 electricity Effects 0.000 title abstract description 5
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- 238000004146 energy storage Methods 0.000 description 7
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- 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
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
- A43B13/181—Resiliency achieved by the structure of the sole
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/34—Footwear characterised by the shape or the use with electrical or electronic arrangements
- A43B3/38—Footwear characterised by the shape or the use with electrical or electronic arrangements with power sources
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- 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
- H10N30/30—Piezoelectric or electrostrictive devices with mechanical input and electrical output, e.g. functioning as generators or sensors
Abstract
An apparatus for generating electricity using piezoelectric material comprises a first elongate member (210) and a second elongate member (220) that are joined together at a first and second points which are spaced apart from each other. The second elongate member (220) comprises a piezoelectric element (255) or has a piezoelectric element (255) mounted thereon. When pressure is applied to the first elongate member (210), the second elongate member (220) is stretched and the stretching force is applied to the piezoelectric element. This generates electricity. A similar arrangement with a third elongate member (230) may be provided on the other side of the second elongate member (220). The apparatus may be placed in a shoe or underneath a floor, so that the variation in pressure caused by walking may be used in generating electricity.
Description
Technical field
The present invention relates to a kind of apparatus and method of using piezoelectric to produce electric power, particularly a kind of device of powering by the motion of human body parts such as pin.
For example, it can be used for below sole or the ground.Then, walk or the mobile pressure variation that causes, make piezoelectric material deforms, thereby make it produce electric power by the people.
Background of invention
United States Patent (USP) 5,918,502 have disclosed one piece of article about footwear, and it has a piezoelectric element at sole.Piezoelectric element is made a bowed shape in advance.When the wearer walked or runs, the active force on sole collision ground deformed piezoelectric element.Thereby generation electric power.But this needs the crooked piezoelectric element of a special type, and this is very expensive, and is difficult to make.
Summary of the invention
The object of the invention is to provide an optional structure by piezoelectric element generation electric power.In preferred embodiment, this structure can produce than prior art and design more electric power and/or more strong.And some preferred embodiments use one or more simple, unbending piezoelectric elements, can save cost like this and be easy to and make.
A first aspect of the present invention provides a device that produces electric power, it comprises first extension component (elongate member) and second extension component, first and second extension components are joined together on separated first and second, and second extension component comprises a piezoelectric element or mounted thereto an of piezoelectric element is arranged; When pressure was applied to first extension component, second extension component was stretched thus, and a tensile force is applied to piezoelectric element.Because piezoelectric element is stretched, it produces electric power.
Tie point between first and second extension components can be to be undertaken by viscose glue or any other suitable method.Can there be an intermediary element to connect this two parts, but normally they be directly linked together.Key character is the end (or other tie point) when first extension component when being moved separately, and tie point causes tensile force to be applied to second extension component.For example, if first extension component has a crooked arcuate section, by pushing first extension component to second extension component, this bending arcuate section is compressed, and it will extend so, and because it is compressed, its end will outwards be moved apart.Be applied to second extension component with regard to causing having a stretching to exert oneself by tie point like this.
Preferably, this device is configured to transmit a compression stress and a tensile force to piezoelectric element.In case when first extension component had been deformed to a predetermined quantity, this device can apply tensile force simultaneously and compression stress arrives piezoelectric element.For example,, first extension component make it touch piezoelectric element, perhaps in case first extension component has been given the gasket compression between himself and the piezoelectric element determined number in case being out of shape.
First and second extension components are joined together on tie point.Preferably, be discontiguous at first and second parts between the tie point during in inactive state.Preferably, a gap is arranged between first and second parts, it can partially or even wholly be filled by one or more pads.
Preferably, between first extension component and piezoelectric element, provide at least one pad.When first extension component was pushed to second extension component, pad can transmit a compression stress to piezoelectric element.Pad also can limit the deformation extent of first extension component.Helping avoid extension component like this breaks.
Preferably, the rigidity of first extension component is bigger than the rigidity of second extension component.Improve the stretch tendency of first extension component of device like this, first and second extension components are pushed away the compression stress of device together with correspondence.
In a preferred structure, provide the 3rd extension component in an opposite sides of relative first extension component of second extension component; The 3rd extension component and second extension component are joined together on separated from each other third and fourth.This has just strengthened the ability of device stretching second extension component.Common second extension component has towards the first surface of first extension component with towards the second surface of the 3rd extension component.Preferably, first and second surfaces are coated with piezoelectric at least in part.Increase the quantity (promptly two or more piezoelectric elements can be arranged) of piezoelectric like this, thereby increased the electric weight that produces.
Preferably, first extension component is bending or nonlinear.Preferably, the 3rd extension component is bending or nonlinear.Preferably, second extension component is linear, and the right and wrong bending.
Preferably, piezoelectric element is not crooked or prebends.On the contrary, can use simple ready-made in block of piezoelectric material (as rectangular shape) or simple coating.Compare with the piezoelectric element that prebends of complex custom, can simplify manufacture process like this.
Preferably, device is designed to activate by the motion of human body or animal.More preferably, this device is designed to activate by foot movement (normally Ren Lei foot).This device can have a surface, and it is arranged to the pressure of grantee's (or animal) part limbs.
A second aspect of the present invention provides a part ground, and the power generating device of first aspect present invention is thereunder arranged.Power generating device is activatable, produces electric power to run on the ground, to walk about by the people or to move.
A third aspect of the present invention provides an article of footwear, comprises the power generating device of first aspect present invention.Preferably, article of footwear comprises surface and plantar surface of a kiss the earth, and power generating device is between the surface and described plantar surface of described kiss the earth.
A fourth aspect of the present invention provides a kind of device that produces electric power, comprises first and second extension components; Wherein said second extension component comprises a piezoelectric element or mounted thereto an of piezoelectric element is arranged; Described device is configured to make that when exerting pressure described tensile force of device transmission and a compression stress arrive described piezoelectric element when described second extension component being pushed to described first extension component.When tensile force and compression stress all are applied to piezoelectric element, only apply tensile force or only apply compression stress such as fruit, can produce more electric power.
Preferably, this device is configured to and applies tensile force and compression stress simultaneously to piezoelectric element.For example, when first extension component is pushed to second extension component, can apply a tensile force at first, when first extension component is pushed to second extension component more, tensile force and compression stress just be arranged simultaneously subsequently.Should believe that compression stress simultaneously and tensile force can produce and more many electric power than applying one of them active force separately.
A fifth aspect of the present invention provides a kind of device that produces electric power, comprises first, second and the 3rd extension component; The wherein said first and the 3rd extension component toward each other, and second extension component is to provide between the described first and the 3rd extension component; Described device is configured to make when exerting pressure when described first extension component being pushed to described the 3rd extension component, this device applies a tensile force to described second extension component, and described second extension component comprises one or more piezoelectric elements or mounted thereto of one or more piezoelectric elements are arranged.This is a simply and easily structure, and when device was compressed, piezoelectric element was out of shape and generation electric power (promptly when first extension component was pushed to the 3rd extension component, vice versa).
Preferably, this device is configured to and applies compression stress and tensile force to described one or more piezoelectric elements.
Preferably, device comprises the one or more pads between described first extension component and the described piezoelectric element.
Preferably, first extension component and described second extension component are connected on first and second positions separated from each other.
Preferably, described the 3rd extension component and described second extension component are connected on third and fourth position separated from each other.
Preferably, the rigidity of described second extension component is littler than the first and the 3rd extension component rigidity.Preferably, the described first and the 3rd extension component is crooked.
A sixth aspect of the present invention provides a kind of method that produces electric power, the structure that provides one to have first and second extension components is provided, first and second extension components are joined together on separated from each other first and second, and second extension component comprises a piezoelectric element or mounted thereto an of piezoelectric element is arranged; Apply pressure to first extension component and push first extension component to second extension component.This structure by second extension component that stretches responding described pressure, thereby apply a tensile force to piezoelectric element.Because piezoelectric element is stretched, thereby produce electric power.
A seventh aspect of the present invention provides a kind of method that produces electric power, and the structure that provides to have first and second extension components is provided; Wherein said second extension component comprises a piezoelectric element or mounted thereto an of piezoelectric element is arranged; Exert pressure and push described second extension component to described first extension component, a tensile force and compression stress are delivered to described piezoelectric element via described structure.When tensile force and compression stress all are applied to piezoelectric element, only apply tensile force or only apply compression stress such as fruit, can produce more electric power.
A eighth aspect of the present invention provides a kind of method that produces electric power, and the structure that provides to have first, second and the 3rd extension component is provided; The wherein said first and the 3rd extension component toward each other, and second extension component is between the described first and the 3rd extension component; Exert pressure and push described first extension component to described the 3rd extension component, make described malformation, thereby a tensile force is applied to described second extension component; Described second extension component comprises one or more piezoelectric elements or has one or more piezoelectric elements mounted thereto.
Any feature of any above-mentioned aspect of the present invention can be combined in together.
Description of drawings
Now also the preferred embodiments of the present invention are described in conjunction with the accompanying drawings by example, wherein:
Fig. 1 shows an article of footwear that comprises power generating device;
Fig. 2 is presented at the device of a plurality of below ground generation electric power;
Fig. 3 describes a power generating device that comprises piezoelectric;
Fig. 4 describes Fig. 3 device and how to apply a tensile force to piezoelectric;
The part of detailed displayed map 3 devices of Fig. 5;
Fig. 6 describes Fig. 3 device and how to apply a compression stress to piezoelectric;
Fig. 7 (a) describes a compressed piezoelectric element;
Fig. 7 (b) describes a piezoelectric element that is stretched;
Fig. 8 (a) describes a dual mode device that produces electric power;
Fig. 8 (b) describes a stretch mode device that produces electric power;
Fig. 8 (c) describes a compact model device that produces electric power, and it has less gap between extension component;
Fig. 8 (d) describes a compact model device that produces electric power, and it has big gap between extension component;
Fig. 9 (a) is a cross section that produces the dual mode device of electric power;
Fig. 9 (b) is a cross section that produces the stretch mode device of electric power;
Fig. 9 (c) is a cross section that produces the compact model device of electric power;
Figure 10 describes Fig. 8 (a)-(d) device relative displacement and the curve chart that produces electric charge; With
Figure 11 is the structural representation that shows another embodiment of power generating device.
Detailed Description Of The Invention
Fig. 1 shows a footwear 1, and it comprises that a top 28 that surrounds human foot and one are positioned under the human foot and protect the sole portion 30 of foot away from ground.Sole has vola (footbed) face 28 of a contact human foot and the lower surface 34 of a kiss the earth.
Sole 30 comprises a cavity, and a pair of piezo- electric device 40,41 that is used for producing electric power is arranged in the cavity.In another embodiment, sole can have only a device 40 that produces electric power, and plural this device is perhaps arranged.Preferably, as shown in Figure 1, device 40,41 is got up by lamination, and one above another.Device 40, the 41 that part of soles (when footwear are put on) that are positioned under the heel.
Footwear 1 has one or more electronic installations 60, and it is completely or partially by power generating device 40,41 power supplies.In this embodiment, power generating device 40,41 is electrically connected to an energy storage module 50 and is used for store power.Energy storage module 50 can comprise that one or more capacitors are used for storage of electrical energy.Energy storage module 50 is electrically connected to one or more electronic installations 60.In this embodiment, electronic installation 60 comprises that step number that a transducer is used to respond to the shoe user and walks about, MCU are used to handle from the data of transducer and RF module and is used to transmit data from MCU or transducer.Footwear can also comprise a step number count display 70.Step number count display 70 can be by energy storage module 50 or power generating device 40,41 power supplies.It receives the data from transducer 60.
Fig. 2 shows an alternative embodiment of the invention, and wherein a plurality of power generating devices 40,41,42,43 are positioned under the ground 100.In this specification, ground is widely used, and comprises any field that the people will walk thereon, as platform, step, floor, carpet etc.Ground can comprise one or more parts.
Such structure makes that the pressure that is applied to ground 100 is passed to power generating device 40,41,42,43.Equally, be applied to any power generating device 41 on the more low layer that pressure on the ground floor power generating device 40 is applied to lamination again.For example, this can be by providing an elastomeric material 110 to realize on ground 100 with between installing 40 and between device 40 and lower bed device 41.To those skilled in the art, other scheme of realization pressure transmission will be conspicuous.
Other zones of a large amount of crowd's processes was arranged in traffic website, tourist attraction and every day, and it will be useful especially at subsurface such power generating device being installed.Like this, can produce electric power, and reduce the electricity charge in an environmental friendliness mode.
The design of power generating device shows in detail at Fig. 3-5 li quilt.
Fig. 3 shows the example of a power generating device 40.It comprises first extension component 210, second extension component 220 and the 3rd extension component 230.The first and the 3rd extension component is not straight, and is crooked, and second extension component is not crooked, and almost is straight line.Second extension component is sandwiched between the first and the 3rd these two extension components, and is connected to the end of these two extension components.Promptly second extension component and first extension component are connected a little on 261 and 262, are connected a little on 264 and 265 with the 3rd extension component.
Between second extension component and the first and the 3rd extension component, provide one or more piezoelectric elements and pad.ConfigurationDetails as shown in Figure 5.
A piezoelectric element 255 is installed on the first surface 221 of second extension component 220, and it is in the face of the inboard of first extension component 210.Installation can be to be undertaken by coating, viscose glue or alternate manner.Pad or dividing plate 250 are to provide between first extension component 210 and piezoelectric element 255.Pad 250 is configured to active force and pressure from first extension component is delivered to piezoelectric element 255.Pad 250 also limits the deformation extent of first extension component, by limiting the amount that it moves to second extension component.
The second surface 222 of second extension component 220 is in the face of the inboard of the 3rd extension component 230.A piezoelectric element 245 is installed on the second surface 222.Installation can be to be undertaken by coating, viscose glue or alternate manner.Pad or dividing plate 240 are to provide between the 3rd extension component 230 and piezoelectric element 245.Pad 240 is configured to active force and pressure from first extension component 210 is delivered to piezoelectric element 245.Pad 240 also limits the deformation extent of the 3rd extension component 230, by limiting the amount that it is pushed to second extension component 220.
Though pad 240,250 is shown as discrete component, they also can be integral parts of extension component.
Piezoelectric element does not prebend.In this embodiment, it is a simple linear pattern module.Such advantage has: can use ready-made piezoelectric, not need complicated manufacture process.In addition, piezoelectric element is relatively strong, compares with a bender element, is not easy fracture.
In another embodiment, second extension component itself can comprise a piezoelectric element.For example, second extension component can be made by piezoelectric, or can mainly be made by another kind of material, but comprises one or more piezoelectric elements.In the case, do not need an independent piezoelectric element to be installed to second extension component.
In another embodiment, the not necessarily interior convex form bending of Fig. 3 of outside extension component.Figure 11 shows another kind of configuration, and wherein the first and the 3rd extension component has an irregular curve.The key character common with Fig. 3 embodiment is that first extension component and second extension component are connected on 1: 361 and 1: 362, and these two points are separated from each other.Between 1: 361,362, one or more cavitys are arranged, between the opposite first of the inner surface of first extension component and second extension component.Preferably, these cavitys are partially or even wholly filled up pad, so that touch piezoelectric element.As in other embodiment, second extension component can comprise one or more piezoelectric elements or have one or more piezoelectric elements mounted thereto.The 3rd extension component has a similar configuration, thirdly is connected second extension component on 364 and the 4th: 365 separated.
In example as shown in figure 11, the shape of first extending element is one and has two peaked dual hump shapes.Preferably, this disposes parts 380, is used for a contact and transfer function power to two maximum.Guarantee to apply uniform pressure like this to first extension component.
Fig. 4 shows the situation of device operation when applying an applied external force.The active force 400,410 that applies is pushed first parts second parts to and is pushed the 3rd parts to second parts.In other words, the first and the 3rd extension component is pulled to together.Active force can be owing to the applied pressure by people's walking, running or jump etc.People's foot can apply these pressure by footwear shown in Fig. 1 or 2 or ground.
Active force 400,410 flattens the first and the 3rd extension component a little, and outwards moves, and it applies a tensile force to second extension component, as shown in Figure 4.Tensile force is to apply by the junction point between the junction point between first extension component and second extension component and the 3rd extension component and second extension component.When second extension component was stretched, piezoelectric element 255,245 was stretched.This stretching is just like the linear deformation shown in Fig. 7 (b).The stretching of piezoelectric produces electric power, and it can be drawn by electric wire (as metal wire), and is supplied to an energy storing device or electronic installation.
Except stretching, the active force 400,410 that is applied to device also causes a compression stress, and is passed to piezoelectric element.With reference to Fig. 6, active force is passed to each piezoelectric element 255,245 as a compression stress via pad 250,240.This causes the compression and the transversely deforming of piezoelectric element, shown in Fig. 7 (a).This compression produces electric power, and it can be drawn as mentioned above.In Fig. 7, the transversely deforming of piezoelectric element is meant along the compression of axle 3 and/or along the expansion of axle 2, normally is parallel to the distortion that takes place on the direction of the extension component longitudinal axis.
Fig. 7 (a) shows the compression stress that is applied to piezoelectric element.The distortion of the piezoelectric element of corresponding compression stress produces electric power, and it can 500 be drawn by going between.Fig. 7 (b) shows the tensile force that is applied to piezoelectric element.The distortion of the piezoelectric element of corresponding tensile force produces electric power, and it can 500 be drawn by going between.
After applying active force 400,410 auto levelizers, tensile force at first is passed to piezoelectric element usually, follows by compression stress.This is because device construction as shown in Figure 3.The naming a person for a particular job of compression stress bump depended on the interval height between pad height, first and second extension components and the attribute of gasket material.
Fig. 8 (a)-(d) shows the various different designs of power generating device.Fig. 8 (a) is a three dimensional design figure, and described that is identical with Fig. 3-6.Cross section as Fig. 9 (a) demonstration.
In another embodiment, shown in Fig. 8 (b), device only moves on stretch mode.There is not pad to be used for compression stress is delivered to piezoelectric element.Therefore, only there is tensile force to be applied to piezoelectric element.Unless the first or the 3rd structure is deformed to such degree, promptly in fact it touch the piezoelectric element or second extension component.Device is shown in the cross section in Fig. 9 (b).
In the embodiment shown in Fig. 8 (c), device only moves on compact model.A piezoelectric element 245 is placed between two pads 240,250.They are sandwiched between first extension component 210 and second extension component 330.Preferably, first and second extension components 210,230 all are crooked.Because do not have linear extension component in the centre, do not have method that tensile force is delivered to piezoelectric element.So only compressive is applied to piezoelectric element via pad.Schematic cross-section is shown in 9 (c).In another embodiment, second extending element 330 almost is linear.But this is not a preferred disposition.Perhaps, any one in first and second pads 240,250 can be removed.
Device shown in Fig. 8 (d) is similar to Fig. 8 (c), and its difference only is that the lateral clearance (along second 2) between first and second extension components is bigger.The height of pad 240,250 is bigger than Fig. 8 (c) lining also.
Preferably, the rigidity of outside extension component is similar or much at one.(outside extension component is the first and the 3rd extension component in Fig. 8 (a) and 8 (b), or first and second extension components in Fig. 8 (c) and 8 (d)).Preferably, the rigidity of inner extension component (second extension components in Fig. 8 (a) and 8 (b)) is less than the rigidity of outside extension component.When inner extension component was lower than the rigidity of outside extension component, its tendency increased the tensile force that is applied to second extension component and piezoelectric element.
Have various materials to be fit to make this device, to those skilled in the art, this is conspicuous.Preferably, pad is to be made by a kind of elastomeric material that can absorbing vibration.In a preferred embodiment, extension component is to be made of copper, and pad is polyethylene (vinyl) or the polyvinyl chloride (PVC) with low elastic modulus so, and piezoelectric is the PZT5H ferroelectric ceramic.
Various devices shown in Fig. 8 (a)-(d) are tested.The result is shown in Figure 10 curve chart, and it shows the lateral displacement of outside relatively extension component in each design and the electric charge that produces.
Can see,, any variation can not take place to the quantity of electric charge that produces like this although Fig. 8 (c) and 8 (d) " compact model " device has the gap of different size between its outside extension component.But the gap is bigger, and desired displacement is bigger before electric charge is produced.
The electric charge that is produced by stretch (shown in the line of Fig. 8 (b) " stretch mode " device) increases progressively linearly along with the displacement of outside extension component.When first parts were pushed to second parts, the x axle of curve chart was represented along the lateral displacement of axle 2.
The dual mode device of Fig. 8 (a), the stretching of piezoelectric element and compression, performance offers the best.The electric charge that produces looks than independent by stretching and compressing produce bigger.Curve chart is in the about gradient that an increase is arranged between 0.38mm and the 0.48mm, be presented in this zone by stretch and compression to the contribution of electric charge.
Below various embodiment of the present invention has been described by example.But, in not breaking away from, can make various modifications and change to described embodiment as spirit and scope defined in claim of the present invention.
Claims (20)
1. device that produces electric power, comprise first extension component and second extension component, first and second extension components are joined together on separated from each other first and second, and second extension component comprises a piezoelectric element or mounted thereto an of piezoelectric element is arranged; When pressure was applied to first extension component, second extension component was stretched thus, thereby a tensile force is applied to piezoelectric element.
2. device according to claim 1, wherein device is configured to and transmits a compression stress and a tensile force to piezoelectric element.
3. device according to claim 2, wherein in case first extension component has been deformed to a scheduled volume, this device is configured to and applies tensile force and compression stress simultaneously to piezoelectric element.
4. device according to claim 1 wherein is provided with at least one pad between first extension component and piezoelectric element.
5. device according to claim 1, wherein the rigidity of first extension component is bigger than the rigidity of second extension component.
6. device according to claim 1 wherein provides the 3rd extension component on the opposition side of relative first extension component of second extension component, the 3rd extension component and second extension component are connected on separated from each other third and fourth.
7. device according to claim 6, wherein second extension component has towards first of first extension component with towards second of the 3rd extension component; Described first and second faces are coated at least in part piezoelectric.
8. device according to claim 1, wherein first extension component is bending or nonlinear.
9. device according to claim 1, wherein second extension component is linear and non-bending.
10. device according to claim 1, wherein piezoelectric element is not crooked.
11. device according to claim 1, wherein device is designed to activate by the motion of human body.
12. an above ground portion, the power generating device of the requirement 1 of thereunder having the right, power generating device is activatable, produces electric power by running on the ground, walk about or moving.
13. a shoe-like devices comprises the described power generating device of claim 1.
14. shoe-like devices according to claim 13 comprises surface and a plantar surface of a kiss the earth, provides described power generating device between the surface of described kiss the earth and described plantar surface.
15. a device that produces electric power comprises first and second extension components; Wherein said second extension component comprises a piezoelectric element or mounted thereto an of piezoelectric element is arranged; Described device is configured to make that when exerting pressure described tensile force of device transmission and a compression stress arrive described piezoelectric element when described second extension component being pushed to described first extension component.
16. device according to claim 15, wherein device is configured to and applies tensile force and compression stress simultaneously to piezoelectric element.
17. a device that produces electric power comprises first, second and the 3rd extension component; Wherein said first is relative with the 3rd extension component, and provide second extension component between the described first and the 3rd extension component; Described device is configured to make that when exerting pressure this device applies a tensile force and arrives described second extension component when described first extension component being pushed to described the 3rd extension component; Described second extension component comprises one or more piezoelectric elements or mounted thereto of one or more piezoelectric elements is arranged.
18. being configured to, device according to claim 17, wherein said device apply compression stress and tensile force simultaneously to described one or more piezoelectric elements.
19. device according to claim 17 comprises that one or more pads are between described first extension component and described piezoelectric element.
20. device according to claim 17, the wherein said first and the 3rd extension component is crooked.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2009/073396 WO2011020246A1 (en) | 2009-08-21 | 2009-08-21 | Apparatus and method for generating electricity using piezoelectric material |
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| CN102113200A true CN102113200A (en) | 2011-06-29 |
| CN102113200B CN102113200B (en) | 2013-07-03 |
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| CN103151960A (en) * | 2013-03-14 | 2013-06-12 | 东华大学 | Device for controlling power generation efficiency of flexible nano-piezoelectric material |
| US9766171B2 (en) | 2014-03-17 | 2017-09-19 | Columbia Insurance Company | Devices, systems and method for flooring performance testing |
| US11857841B2 (en) | 2021-10-07 | 2024-01-02 | John R. Hudak | Performance monitoring system for a pitcher |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5500635A (en) * | 1990-02-20 | 1996-03-19 | Mott; Jonathan C. | Products incorporating piezoelectric material |
| US6407484B1 (en) * | 2000-09-29 | 2002-06-18 | Rockwell Technologies Inc | Piezoelectric energy harvester and method |
| CN101278768A (en) * | 2007-11-30 | 2008-10-08 | 大连理工大学 | Power-generating shoes |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1901352A (en) * | 2005-07-22 | 2007-01-24 | 吴玉华 | Power generation brick |
| WO2008069524A1 (en) * | 2006-12-04 | 2008-06-12 | Jae Gu Jeong | Footwear sole having an electric discharge effect |
| CN201210651Y (en) * | 2008-06-19 | 2009-03-18 | 刘兴中 | Piezoelectric power generator |
-
2009
- 2009-08-21 WO PCT/CN2009/073396 patent/WO2011020246A1/en active Application Filing
- 2009-08-21 CN CN2009800001209A patent/CN102113200B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5500635A (en) * | 1990-02-20 | 1996-03-19 | Mott; Jonathan C. | Products incorporating piezoelectric material |
| US6407484B1 (en) * | 2000-09-29 | 2002-06-18 | Rockwell Technologies Inc | Piezoelectric energy harvester and method |
| CN101278768A (en) * | 2007-11-30 | 2008-10-08 | 大连理工大学 | Power-generating shoes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102113200B (en) | 2013-07-03 |
| WO2011020246A1 (en) | 2011-02-24 |
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