CN103580535B - Insole-type piezoelectric generator - Google Patents
Insole-type piezoelectric generator Download PDFInfo
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- CN103580535B CN103580535B CN201310513591.8A CN201310513591A CN103580535B CN 103580535 B CN103580535 B CN 103580535B CN 201310513591 A CN201310513591 A CN 201310513591A CN 103580535 B CN103580535 B CN 103580535B
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Abstract
The present invention proposes a kind of Insole-type piezoelectric generator, comprising: up-protective layer and lower protective layer, and up-protective layer is positioned on lower protective layer, and up-protective layer and lower protective layer are insole shape; At least one piezo-electric generating unit, at least one piezo-electric generating unit is between up-protective layer and lower protective layer, each piezo-electric generating unit comprises: upper tooth layer and lower tooth layer, upper tooth layer is positioned on lower tooth layer, the lower surface of upper tooth layer comprises the upper rack and upper teeth groove that are alternately arranged, the upper surface of lower tooth layer comprises the lower teeth groove and lower tooth bar that are alternately arranged, and upper rack is relative with lower teeth groove and upper teeth groove is relative with lower tooth bar; And piezoelectric membrane, piezoelectric membrane is between upper tooth layer and lower tooth layer; And power management module, power management module is between up-protective layer and lower protective layer, and power management module is connected with the piezoelectric membrane in each piezo-electric generating unit.Insole-type piezoelectric generator of the present invention, structure is simple, comfortable foot feeling, be applicable to conventional shoe.
Description
Technical field
The present invention relates to new energy field, particularly relate to a kind of Insole-type piezoelectric generator.
Background technology
In daily life, human body at every moment all at consumed energy, and by energy dissipation in the environment.Utilize this feature, people designed all kinds of wearable, for collecting the device of body energy.Wherein, in the footwear can collecting human motion production capacity, generator is an important directions.At present, in typical footwear generator have adopt piezoelectricity make pottery piezoelectric generator in stacking footwear, utilize piezoelectric ceramic and Piezoelectric Film for Designing combined type footwear in generator and electrostatic generator etc.Although generator serves the effect of collection of energy in these type of footwear, all have that universality difference, comfortableness are poor, complex structure and a shortcoming of durability deficiency, be unfavorable for the marketization of generator in footwear, commercialization.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.
For this reason, the object of the invention is to propose a kind of Insole-type piezoelectric generator that there is good comfort, be generally applicable to all kinds of shoes.
In one embodiment of the invention, Insole-type piezoelectric generator, comprising: up-protective layer and lower protective layer, and described up-protective layer is positioned on described lower protective layer, and described up-protective layer and described lower protective layer are insole shape; At least one piezo-electric generating unit, at least one piezo-electric generating unit described is between described up-protective layer and described lower protective layer, each described piezo-electric generating unit comprises: upper tooth layer and lower tooth layer, described upper tooth layer is positioned on described lower tooth layer, the lower surface of described upper tooth layer comprises the upper rack and upper teeth groove that are alternately arranged, the upper surface of described lower tooth layer comprises the lower teeth groove and lower tooth bar that are alternately arranged, and described upper rack is relative with described lower teeth groove and described upper teeth groove is relative with described lower tooth bar; And piezoelectric membrane, described piezoelectric membrane is on described between tooth layer and described lower tooth layer; And power management module, described power management module is between described up-protective layer and described lower protective layer, and described power management module is connected with the described piezoelectric membrane at least one piezo-electric generating unit described.
In one embodiment of the invention, described Insole-type piezoelectric generator comprises two described piezo-electric generating unit, two described piezo-electric generating unit lay respectively at forefoot correspondence position and rear heel correspondence position in described Insole-type piezoelectric generator, and described power management module is arranged in the arch of foot correspondence position of described Insole-type piezoelectric generator.
In one embodiment of the invention, power management module specifically comprises: rectification module, and described rectification module is connected with described piezoelectric membrane, for being direct current by AC rectification; Energy-storage module, described energy-storage module is connected with described rectification module, for store electrical energy; And output control module, described output control module is connected with described energy-storage module, exports for controlling electric energy.
In one embodiment of the invention, the material of described piezoelectric membrane is Kynoar.
In one embodiment of the invention, the thickness range of described piezoelectric membrane is 10 ~ 1000 μm.
In one embodiment of the invention, the piezoelectric strain constant of described piezoelectric membrane meets d31>10pC/N and d33>10pC/N.
In one embodiment of the invention, the elastic limit of described piezoelectric membrane is greater than 10Mpa.
In one embodiment of the invention, the material of described upper tooth layer and described lower tooth layer is soft material.
In one embodiment of the invention, the cross section of described upper rack and described lower tooth bar is trapezoidal, triangle, arc or rectangle.
In one embodiment of the invention, comprise multi-layer piezoelectric film between described upper tooth layer and described lower tooth layer, described multi-layer piezoelectric stacks of thin films is placed and is connected in parallel, the surface insulation of piezoelectric membrane described in each of described stacking placement.
According to the Insole-type piezoelectric generator of the embodiment of the present invention, structure is simple, comfortable foot feeling, be applicable to conventional shoe.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the vertical view schematic diagram of the Insole-type piezoelectric generator of the embodiment of the present invention;
Fig. 2 is the front view in the A-A cross section of the Insole-type piezoelectric generator shown in Fig. 1;
Fig. 3 is the structural representation of the piezo-electric generating unit of Insole-type piezoelectric generator described in Fig. 1;
Fig. 4 a be the Insole-type piezoelectric generator of the embodiment of the present invention stressed time piezo-electric generating unit view;
Fig. 4 b be the Insole-type piezoelectric generator of the embodiment of the present invention not stressed time piezo-electric generating unit view;
Fig. 5 is the schematic layout pattern of piezoelectric unit and power management module in the Insole-type piezoelectric generator of the embodiment of the present invention;
Fig. 6 is the frame diagram of power management module in the Insole-type piezoelectric generator of the embodiment of the present invention;
Fig. 7 a is the structural representation with the piezo-electric generating unit of lance tooth unit of the embodiment of the present invention;
Fig. 7 b is the structural representation with the piezo-electric generating unit of rectangular teeth unit of the embodiment of the present invention; With
Fig. 8 has the upper tooth layer of arc tooth unit, the tooth cell schematics of lower tooth layer in the Insole-type piezoelectric generator of the embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
According to the Insole-type piezoelectric generator of the embodiment of the present invention, can comprise: up-protective layer 1, lower protective layer 2, at least one piezo-electric generating unit 3 and power management module 4.Wherein, as shown in Figure 1, up-protective layer 1 is positioned on lower protective layer 2, and up-protective layer 1 and lower protective layer 2 are insole shape.As shown in Figure 2, at least one piezo-electric generating unit 3 and power management module 4 are between up-protective layer 1 and lower protective layer 2, and power management module 4 is connected with at least one piezo-electric generating unit 3.It should be noted that, those skilled in the art can also as required flexible in Insole-type piezoelectric generator correct position add fixing fitting with fixing all parts.
As shown in Figure 3, each piezo-electric generating unit 3 specifically comprises: upper tooth layer 31, lower tooth layer 32 and piezoelectric membrane 33.Upper tooth layer 31 is positioned on lower tooth layer 32.The lower surface of upper tooth layer 31 comprises the upper rack 31a and upper teeth groove 31b that are alternately arranged.The upper surface of lower tooth layer 32 comprises the lower teeth groove 32a and lower tooth bar 32b that are alternately arranged.Upper rack 31a is relative with lower teeth groove 32a and upper teeth groove 31b is relative with lower tooth bar 32b.A teeth groove and a tooth bar form a tooth unit.Piezoelectric membrane 33 is between upper tooth layer 31 and lower tooth layer 32, and piezoelectric membrane 33 is connected with power management module 4.
For making this area understand the present invention better, below the Insole-type piezoelectric generator course of work that the present invention states embodiment is described below:
Fig. 4 a is when foot lands, Insole-type piezoelectric generator is stressed, the schematic diagram of the state of piezo-electric generating unit.When moving, foot constantly applies periodic external force to shoe-pad.After foot lands, plantar pressure is moved to half sole by heel.After foot lands, due to the effect of plantar pressure, shoe insole surface is stressed, and upper tooth layer 31 and lower tooth layer 32 engage, be positioned at piezoelectric membrane 33 between tooth layer 31 and lower tooth layer 32 there is stretcher strain in left and right direction, at upper and lower to generation compression.Because the material of piezoelectric membrane 33 has piezoelectric effect, the surface of piezoelectric membrane 33 produces electric charge, and the electric charge of generation is collected by power management module 4 and stores.
Fig. 4 b is when foot is liftoff, Insole-type piezoelectric generator is not stressed, the schematic diagram of the state of piezo-electric generating unit.In the process that foot is liftoff, plantar pressure reduces, and shoe insole surface pressure reduces.Piezoelectric membrane 33 promotes tooth layer 31 and is separated with lower tooth layer 32 under the effect of own tension, the elongation strain that piezoelectric membrane 33 occurs at left and right and upper and lower are progressively decreased to initial value to the compression strain occurred, and producing heterocharge (situation when landing relative to foot) with on the surface of piezoelectric membrane 33, the electric charge of generation is by power management module 4 rectification, collection storing.After foot is completely liftoff, Insole-type piezoelectric generator is output charge no longer, until next foot lands.With periodic external force, the Insole-type piezoelectric generator of the embodiment of the present invention exports periodic electric charge, and the electric charge of generation is collected by power management module 4 and stores.According to load needs, electric energy can export by power management module 4.
In one embodiment of the invention, as shown in Figure 5, Insole-type piezoelectric generator can comprise two piezo-electric generating unit 3.Two piezo-electric generating unit 3 lay respectively at forefoot correspondence position and rear heel correspondence position in Insole-type piezoelectric generator, and power management module 4 is arranged in the arch of foot correspondence position of Insole-type piezoelectric generator.
Be piezoelectric generator according to the shoe-pad of above-described embodiment, according to the structure of foot and the layout of movement characteristic, meet the feature of ergonomics.In addition, the Insole-type piezoelectric generator of embodiment of the present invention entirety adopts flexible material to make, the profile of shoe-pad and thickness and general shoe-pad similar, there is good comfortableness.
In one embodiment of the invention, power management module 4 specifically comprises as shown in Figure 6: rectification module 41, energy-storage module 42 and output control module 43.
Wherein, rectification module 41, rectification module 41 is connected with piezoelectric membrane 33, for being direct current by AC rectification.Energy-storage module 42 is connected with rectification module 41, for store electrical energy.Output control module 43 is connected with energy-storage module 42, exports for controlling electric energy.It should be noted that, power management module 4 can select integrated circuit (IC) chip, energy-storage travelling wave tube, SMD components, flexible PCB to form by technical staff as required flexibly, and detail does not repeat herein.
Not only achieve the function of collection of energy, storage and output according to the power management module 4 of the Insole-type piezoelectric generator of above-described embodiment, and possess low-power consumption, micro-volume, flexible feature.
In addition, for ensureing that the shoe-pad generator of the embodiment of the present invention has good comfortableness, special design has been done to the shape of the tooth-shape structure of tooth unit.Except the trapezoidal toothed structure shown in Fig. 3, Fig. 4 a and Fig. 4 b and arc tooth-shape structure, can also be triangle tooth-shape structure or rectangle tooth-shape structure, respectively as shown in figs. 7 a and 7b.
According to the structural design of the Insole-type piezoelectric generator of above-described embodiment, when upper rack (upper teeth groove) and lower teeth groove (lower tooth bar) engages time, piezoelectric membrane is made to be operated in elastic range, both ensured that piezoelectric membrane plastic deformation did not occur, strengthens the durability of system, ensured again that the capacity efficiency of piezoelectric membrane was high.
In one embodiment of the invention, up-protective layer 1 and lower protective layer 2 can adopt fabric, make it more soft, wear-resisting, comfortable.
In one embodiment of the invention, the making material of upper tooth layer 31 and lower tooth layer 32 is soft material, as silica gel, rubber, high-density sponge etc.Because these materials have good springiness, are easy to acquisition, lower-cost advantage, therefore make to make Insole-type piezoelectric generator of the present invention easy to make, economical and practical.
In one embodiment of the invention, the material of piezoelectric membrane 33 can be Kynoar (PolyVinylideneFluoride, PVDF).PVDF mainly refers to the copolymer of a small amount of fluorine-containing vinyl monomer of vinylidene fluoride homopolymer or vinylidene and other, PVDF resin has the characteristic of fluororesin and resins for universal use concurrently, except there is good chemical resistance, heat-resisting quantity, oxidative resistance, weatherability, resistance to x radiation x performance, also there is the properties such as piezoelectricity, dielectricity, pyroelectricity.Adopt this kind of material to make shoe-pad generator of the present invention have wear-resisting, use permanent advantage.
In one embodiment of the invention, the thickness range of piezoelectric membrane 33 is 10 ~ 1000 μm.Ensure that the thickness of shoe-pad Medium-voltage Motor of the present invention and general shoe-pad is similar, there is good comfortableness.
In one embodiment of the invention, the piezoelectric strain constant of piezoelectric membrane 33 meets d
31>10pC/N, and d
33>10pC/N.D
31that piezoelectric membrane 33, on left and right direction, stretcher strain occurs, in the metric parameter of the quantity of electric charge that its surface produces.D
33piezoelectric membrane 33 at upper and lower to generation compression, in the metric parameter of the quantity of electric charge that its surface produces.Shoe-pad piezoelectricity function of the present invention generation has the enough large quantity of electric charge to select the piezoelectric strain constant within the scope of this ensure that.
In one embodiment of the invention, the elastic limit of piezoelectric membrane 33 is greater than 10Mpa.In motion process, can not there is plastic deformation because pressure is excessive in the shoe-pad generator of this embodiment, durability is good.
Select the material of piezoelectric membrane to have in an embodiment of the present invention thickness is thin as far as possible, piezoelectric strain constant is high as far as possible, elastic limit is high as far as possible characteristic.And the parallel connection of multi-layer piezoelectric film used, thus increase output charge.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
The up-protective layer of Insole-type piezoelectric generator and the making material of lower protective layer are fabric in one embodiment of the invention, and upper tooth layer and lower tooth layer adopt silica gel to make.Piezoelectric membrane adopt 8 layer thicknesses be 30 μm, the piezoelectric membrane that is made by polyvinylidene fluoride material is formed in parallel.The Young's modulus of PVDF is 2500MPa, and elastic limit is 50MPa, piezoelectric strain constant d
33=-21 × 10
-12c/N, d
31=17 × 10
-12c/N, relative dielectric constant is 10.The tooth cell configuration of upper tooth layer and lower tooth layer is arc, long L=10mm, angle α=39 °, as shown in Figure 8.The area of heel and half sole is approximately 50 × 60mm respectively
2, 80 × 90mm
2, have respectively in the piezo-electric generating unit at heel and half sole place 6 to 9 pairs of tooth unit, composition graphs 5.User often makes a move, and can produce the electric charge of 130 μ C.If the energy-storage travelling wave tube of energy-storage module is the electric capacity of 2.2 μ F, then capacitance voltage rising 59V in electric power management circuit, energy increases 3.84mJ.If the cadence of people is 1 ~ 2Hz, then the power of Insole-type piezoelectric generator can reach 3.84 ~ 7.68mW, can meet the energy requirement of some consumer electronics.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, the different embodiment described in this specification or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (3)
1. an Insole-type piezoelectric generator, is characterized in that, comprising:
Up-protective layer and lower protective layer, described up-protective layer is positioned on described lower protective layer, and described up-protective layer and described lower protective layer are insole shape, and described up-protective layer and described lower protective layer are flexible fabric;
At least one piezo-electric generating unit, at least one piezo-electric generating unit described is between described up-protective layer and described lower protective layer, and each described piezo-electric generating unit comprises:
Upper tooth layer and lower tooth layer, described upper tooth layer is positioned on described lower tooth layer, the lower surface of described upper tooth layer comprises the upper rack and upper teeth groove that are alternately arranged, the upper surface of described lower tooth layer comprises the lower teeth groove and lower tooth bar that are alternately arranged, described upper rack is relative with described lower teeth groove and described upper teeth groove is relative with described lower tooth bar, wherein, the material of described upper tooth layer and described lower tooth layer is soft material, and the cross section of described upper rack and described lower tooth bar is trapezoidal, triangle, arc or rectangle; With
Piezoelectric membrane, described piezoelectric membrane is on described between tooth layer and described lower tooth layer, and wherein, the material of described piezoelectric membrane is Kynoar, and the thickness range of described piezoelectric membrane is 10 ~ 1000 μm, and the piezoelectric strain constant of described piezoelectric membrane meets d
31>10pC/N and d
33>10pC/N, the elastic limit of described piezoelectric membrane is greater than 10Mpa; And
Power management module; described power management module is between described up-protective layer and described lower protective layer; described power management module is connected with the described piezoelectric membrane in each piezo-electric generating unit described; described power management module specifically comprises: rectification module, energy-storage module and output control module; described rectification module is connected with described piezoelectric membrane; for being direct current by AC rectification; described energy-storage module is connected with described rectification module; for store electrical energy; described output control module is connected with described energy-storage module, exports for controlling electric energy.
2. Insole-type piezoelectric generator according to claim 1, it is characterized in that, described Insole-type piezoelectric generator comprises two described piezo-electric generating unit, two described piezo-electric generating unit lay respectively at forefoot correspondence position and rear heel correspondence position in described Insole-type piezoelectric generator, and described power management module is arranged in the arch of foot correspondence position of described Insole-type piezoelectric generator.
3. Insole-type piezoelectric generator according to claim 1, it is characterized in that, comprise multi-layer piezoelectric film between described upper tooth layer and described lower tooth layer, described multi-layer piezoelectric stacks of thin films is placed and is connected in parallel, the surface insulation of piezoelectric membrane described in each of described stacking placement.
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| CN105391343A (en) * | 2015-10-15 | 2016-03-09 | 上海工程技术大学 | Acoustic energy recycling device |
| CN106037140A (en) * | 2016-08-05 | 2016-10-26 | 中侨健康管理（上海）有限公司 | Intelligent sole and shoe for home-based care and tumble judging and alarming method |
| CN106253747B (en) * | 2016-08-26 | 2019-01-01 | 合肥工业大学 | A kind of integrated form flexibility power generation film |
| CN106690641B (en) * | 2017-01-12 | 2020-06-30 | 李承霖 | Control method of power generation foot warming shoes |
| TW202121706A (en) * | 2019-11-20 | 2021-06-01 | 中原大學 | Piezoelectric hunting device with light design and voltage signal application system thereof |
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