CN104092407A - Equal-deformation cantilever lever type piezoelectric power generation component - Google Patents
Equal-deformation cantilever lever type piezoelectric power generation component Download PDFInfo
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- CN104092407A CN104092407A CN201410382179.1A CN201410382179A CN104092407A CN 104092407 A CN104092407 A CN 104092407A CN 201410382179 A CN201410382179 A CN 201410382179A CN 104092407 A CN104092407 A CN 104092407A
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- arc surface
- briquetting
- piezoelectric ceramic
- ceramic piece
- plate
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Abstract
The invention discloses an equal-deformation cantilever lever type piezoelectric power generation component which comprises a piezoelectric power generation plate, an elastic lever and an auxiliary supporting part, wherein the piezoelectric power generation plate comprises a copper pole plate, a square piezoelectric ceramic piece A and a square piezoelectric ceramic piece B, and the square piezoelectric ceramic piece A and the square piezoelectric ceramic piece B are stuck on the upper surface and the lower surface of the copper pole plate; the elastic lever comprises a T-shaped elastic rod, a driving pressing block and a driven pressing block, the driving pressing block is arranged on the upper side of the T-shaped elastic rod and is close to an upper pressing plate, and the driven pressing block is arranged at the end part of the lower side of the T-shaped elastic rod; the auxiliary supporting part comprises an arc-surface bottom plate, a supporting plate, the upper pressing plate and a connecting piece; the arc-surface bottom plate, the copper pole plate, the supporting plate, the T-shaped elastic rod and the upper pressing plate are sequentially arranged from bottom to top, and the connecting piece penetrates through a connecting hole of each part to connect the parts together. The piezoelectric power generation component has the advantages of simple structure, large power capacity, easiness in manufacturing and assembly of a whole machine, low cost, high piezoelectric conversion efficiency, no environmental pollution, long service life and the like, piezoelectric ceramics are not easily damaged and broken, and no discomfort such as losing a step during trampling exists.
Description
Technical field
The present invention relates to a kind of energy recycle device that utilizes piezoceramic material piezoelectric effect, specifically, relate to a kind of deformation cantilever lever piezo-electric generating assembly that waits.
Background technology
Utilize device that piezoelectric ceramic direct piezoelectric effect generates electricity because of its have environmental protection and energy saving, simple in structure, without electromagnetic interference, be easy to realize, low cost and other advantages, become countries in the world researcher's the focus of attention.Study both at home and abroad to utilize body kinetic energy to carry out piezoelectric generating device more, publication number is that the patent documentation of CN201956927U discloses a kind of piezoelectric generating device that utilizes human body frequently to step on away, this device utilizes human body spring lever mechanism to be trampled to the potential energy that forms spring deformation, and then retracting spring deformation potential knocks and carries out piezo-electric generating piezoelectric, this apparatus structure is simple, cost is low, energy output is concentrated, it is slower that but human body is trampled the speed that this device lever construction rear foot packs up, the percussion power after spring deformation potential energy discharges, piezoceramic material being formed is very little, affect the generating conversion efficiency of piezoelectric ceramic piece, in addition, the stroke that human body is trampled is greater than 2mm, step on the senses of discomfort such as empty.
The patent No. is 201320203629.7, denomination of invention is that a kind of patent documentation of cantilever piezo-electric generating assembly discloses a kind of piezoelectric generating device that utilizes cantilever lever principle, this device has solved the sense of discomfort that human body Trample generating set produces, but find in deep experiment of later stage, in the brittle failure deformation range of piezoelectric, piezoelectric cantilever end applies after external force or displacement, in same cross section, piezoelectric cantilever stiff end is in vertical direction displacement minimum, free end travel maximum, but the piezoelectric ceramic deformation maximum of piezoelectric cantilever stiff end, more trend towards its piezoelectric ceramic deformation of free end less, the vanishing of free-ended piezoelectric ceramic shape.Because the energy output of piezoelectric cantilever and the deformation size of piezoelectric ceramic are directly proportional, therefore the energy output maximum of piezoelectric cantilever stiff end, trending towards free end energy output reduces gradually, free end end energy output is zero, that is to say that this cantilever piezo-electric generating assembly can not utilize body kinetic energy fully, fully improves the generating transformation efficiency of piezoelectric cantilever.
Summary of the invention
The invention provides a kind of novel assembly such as piezo-electric generating such as lever such as cantilever such as deformation such as grade, object is to utilize body kinetic energy to carry out the conversion efficiency of piezo-electric generating in order to improve, and steps on the sense of discomfort such as empty simultaneously and directly trample piezoelectric ceramic piece easily to cause its problem such as damage of breaking while avoiding trampling piezoelectric generating device.
Deng deformation cantilever lever piezo-electric generating assembly, comprise piezo-electric generating plate, elastic lever and supplemental support parts, described piezo-electric generating plate comprises copper polar plate and sticks on square A piezoelectric ceramic piece and the B piezoelectric ceramic piece on copper polar plate upper and lower surface, the equal through-thickness polarization of A piezoelectric ceramic piece and B piezoelectric ceramic piece and polarised direction are contrary, and A piezoelectric ceramic piece, B piezoelectric ceramic piece and copper polar plate are all connected to power conversion circuits and energy accumulating device.
Elastic lever comprises T-shaped elastic rod, be arranged on T-shaped elastic rod upside near the active briquetting of top board and be arranged on the driven briquetting of T-shaped elastic rod downside end, initiatively briquetting is arranged on the position of T-shaped elastic rod upside near top board by bonding or welding, initiatively briquetting is 1/10 ~ 1/2 of T-shaped elastic rod jib-length to the distance of top board, and driven briquetting is by bonding or be welded on T-shaped elastic rod downside end.
Supplemental support parts comprise arc surface base plate, supporting bracket, top board and connector, arc surface base plate, copper polar plate, supporting bracket, T-shaped elastic rod and top board arrange successively from bottom to top, on arc surface base plate, copper polar plate, supporting bracket, T-shaped elastic rod and top board, all offer and can, for the connection holes connecting, be connected as one through after the connection holes of each part by connector; In the vertical direction, the height of the aspect ratio top board upper surface of described active briquetting upper surface is high by 0.2 ~ 1.8
mm.
Arc surface base plate one end offers the connection holes for connecting use, other end upper surface is arc surface, arc surface is tangent with upper surface topmost, the center of circle of arc surface is under incision superius, the upper end of arc surface is concordant with the end of piezoelectric ceramic piece, the width of the width>=piezoelectric ceramic piece of arc surface base plate, the length of the arc surface of arc surface base plate length>=piezoelectric ceramic piece of projection on bottom surface, the radius value of arc surface is 50
mm~ 340
mmbetween; Arc surface base plate, supporting bracket, top board, active briquetting and driven briquetting are as the non-conducting material of plastics, timber, pottery or glass.
After the T-shaped end of elastic lever is fixed by supplemental support parts, elastic lever has just formed piezoelectric cantilever lever construction, elastic lever is fulcrum by supplemental support parts bearing, and initiatively briquetting is power arm to fulcrum section, and driven briquetting is resistance arm to fulcrum section.
In the time that people tramples the active briquetting of T-shaped elastic rod upside, according to lever principle, the driven briquetting that is arranged on T-shaped elastic rod downside will move down the distance moving down more than active briquetting, only need trample very little distance downwards to active briquetting, can drive piezo-electric generating plate free end to move down larger distance and realize the power conversion of body kinetic energy to electric energy, thereby improve the piezoelectricity conversion efficiency of piezo-electric generating plate.
Driven briquetting drives piezoelectric cantilever free end to move down, along with progressively moving down of driven briquetting, piezoelectric cantilever fits with the upper arc surface of arc surface base plate gradually from stiff end to free end, thereby ensure that the uniformity of deformation and every section of piezoelectric ceramic piece deformation all occurs piezoelectric cantilever every section of piezoelectric ceramic piece from stiff end to free end, the deformation of every section of piezoelectric ceramic piece is normal value, and this deformation values is relevant with the arc radius of arc surface on arc surface base plate, the arc radius of arc surface on arc surface base plate is rationally set, ensure that piezoelectric ceramic piece is in its brittle failure deformation range, avoid simple piezoelectric cantilever large at stiff end energy output, the problems such as free end energy output is little, make every section of piezoelectric ceramic piece that deformation all occur, fully improve the piezoelectricity conversion efficiency of piezoelectric cantilever piezoelectric ceramic piece.
Trample and finish to discharge after active briquetting when human body, T-shaped elastic rod returns to original shape, and driven briquetting and copper polar plate depart from, and in the time that human body is trampled continuously and discharge active briquetting, this piezo-electric generating assembly can complete continuous piezo-electric generating process.
Due to the support limit effect of top board, restriction active briquetting and human body only can move down 0.2 ~ 1.8
mm, distance is shorter, without stepping on the senses of discomfort such as empty, and has avoided human body and the direct of piezoelectric ceramic to contact, and ensures that piezoelectric ceramic is not by concussion fracture or damage.The existence of arc surface base plate, has ensured the uniformity of piezoelectric ceramic piece deformation and the controllability that curvature changes, and has fully improved the generating efficiency of piezoelectric cantilever piezoelectric ceramic piece.Compared with prior art, these deformation cantilever lever piezo-electric generating assemblies have that simple in structure, power capacity is large, complete machine manufacture assembling easily, cost is low, piezoelectricity conversion efficiency is high, the not fragile fragmentation of piezoelectric ceramic, while trampling without stepping on the advantages such as sense of discomfort, environmentally safe, long service life such as empty.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is front view of the present invention.
Fig. 3 is system configuration schematic diagram of the present invention.
Fig. 4 is the structural representation of top board 8 in the present invention.
Fig. 5 is the structural representation of T-shaped elastic rod 5 in the present invention.
Fig. 6 is the structural representation of supporting bracket 9 in the present invention.
Fig. 7 is the structural representation of copper polar plate 2 in the present invention.
Fig. 8 is the structural representation of arc surface base plate 10 in the present invention.
Fig. 9 is the front view of arc surface base plate 10 in the present invention.
Figure 10 is the structural representation of active briquetting 6 in the present invention.
Figure 11 is the structural representation of driven briquetting 4 in the present invention.
Number in the figure explanation: 1.A piezoelectric ceramic piece, 2. copper polar plate, 3. B piezoelectric ceramic piece, 4. driven briquetting, 5.T type elastic rod, 6. active briquetting, 7. connector, 8. top board, 9. supporting bracket, 10. arc surface base plate, 11. power conversion circuits and energy accumulating device.
Embodiment
Shown in Fig. 1 and Fig. 2, comprise piezo-electric generating plate, supplemental support parts and elastic lever Deng deformation cantilever lever piezo-electric generating assembly, described piezo-electric generating plate comprises copper polar plate 2 and sticks on square A piezoelectric ceramic piece 1 and the B piezoelectric ceramic piece 3 on copper polar plate 2 upper and lower surfaces, the equal through-thickness polarization of A piezoelectric ceramic piece 1 and B piezoelectric ceramic piece 3 and polarised direction are contrary, copper polar plate 2 materials are beryllium-bronze, and length is 70
mm, width is 50
mm, thickness is 0.3
mm, piezoelectric ceramic sheet material is PZT-5, and length is 50
mm, width is 50
mm, thickness is 0.2
mm.
Elastic lever comprises T-shaped elastic rod 5, be arranged on T-shaped elastic rod 5 upsides near the active briquetting 6 of top board 8 and be arranged on the driven briquetting 4 of T-shaped elastic rod 5 downside ends, initiatively briquetting 6 and driven briquetting 4 are linked together by bonding way and T-shaped elastic rod 5, initiatively briquetting 6 is 1/5 of T-shaped elastic rod 5 jib-lengths to top board 8 distances, in the vertical direction, initiatively the height of aspect ratio top board 8 upper surfaces of briquetting 6 upper surfaces is high by 1
mm.
Supplemental support parts comprise arc surface base plate 10, supporting bracket 9, top board 8 and joint bolt 7; Arc surface base plate 10, copper polar plate 2, supporting bracket 9, T-shaped elastic rod 5 and top board 8 arrange successively from bottom to top, and on arc surface base plate 10, copper polar plate 2, supporting bracket 9, T-shaped elastic rod 5 and top board 8, all offering can be for the connection holes connecting, and bore dia is 4.3
mm, being connected as one through after the connection holes of each part by joint bolt 7, screw nominal diameter is 4
mm.
The diameter that arc surface base plate 10 one end offer for connecting use is 4.3
mmconnection holes, other end upper surface is arc surface, arc surface is tangent with upper surface topmost, the center of circle of arc surface is under incision superius, the upper end of arc surface is concordant with the end of piezoelectric ceramic piece, the width of arc surface base plate is 70
mm, the length of the arc surface of arc surface base plate projection on bottom surface is 90
mm, the radius of arc surface is 240
mm; Arc surface base plate 10, supporting bracket 9, top board 8, active briquetting 6 and driven briquetting 4 are nylon-66 plastic material.
Shown in Fig. 3, A piezoelectric ceramic piece 1, B piezoelectric ceramic piece 3 and copper polar plate 2 are all connected to power conversion circuits and energy accumulating device 11.
Shown in Fig. 4-11, for the structural representation of top board 8, T-shaped elastic rod 5, supporting bracket 9, copper polar plate 2, arc surface base plate 10, arc surface base plate 10 end views, active briquetting 6 and driven briquetting 4, fully demonstrate the structure of each part, to fully understand the connecting relation between each part.
In the time that people tramples the active briquetting 6 of T-shaped elastic rod 5 upsides, due to the support limit effect of top board 8, initiatively briquetting 6 only can move down 1
mm, because active briquetting 6 is 1/5 of T-shaped elastic rod 5 jib-lengths to top board 8 distances, according to lever principle, the driven briquetting 4 that is arranged on T-shaped elastic rod 5 end downsides moves down 5 again
mm, drive piezo-electric generating plate free end to move down 5
mmdistance.
Driven briquetting drives piezoelectric cantilever free end to move down, along with progressively moving down of driven briquetting, piezoelectric cantilever fits with the upper arc surface of arc surface base plate gradually from stiff end to free end, ensure that the uniformity of deformation and every section of piezoelectric ceramic piece deformation, arc surface radius=240 of its internal diameter radius value=arc surface base plate of piezoelectric cantilever beam deformed all occur piezoelectric cantilever every section of piezoelectric ceramic piece from stiff end to free end
mm, arc surface radius+copper polar plate thickness+piezoelectric ceramic piece one-tenth-value thickness 1/10 x2=240 of piezoelectric cantilever external diameter radius value=arc surface base plate
mm+ 0.3
mm+ 0.2
mmx2=240.7
mm, fully improved the generating efficiency of piezoelectric cantilever piezoelectric ceramic piece.
Trample and finish to discharge after active briquetting 6 when human body, T-shaped elastic rod 5 returns to original shape, and driven briquetting 4 and copper polar plate 2 depart from, and in the time that human body is trampled continuously and discharge active briquetting 6, this piezo-electric generating assembly can complete continuous piezo-electric generating process.Be 1 when trampling frequency
hztime, use oscilloscope to measure the output voltage of A piezoelectric ceramic piece 1 and B piezoelectric ceramic piece 3, its output voltage maximum is respectively 32.4
vwith 30.2
v, more simple its output voltage of piezoelectric cantilever electrification component improves a lot, and power generation performance is good.
Claims (9)
1. wait deformation cantilever lever piezo-electric generating assembly, comprise piezo-electric generating plate, elastic lever and supplemental support parts, described piezo-electric generating plate comprises copper polar plate and sticks on square A piezoelectric ceramic piece and the B piezoelectric ceramic piece on copper polar plate upper and lower surface, the equal through-thickness polarization of A piezoelectric ceramic piece and B piezoelectric ceramic piece and polarised direction are contrary, it is characterized in that: elastic lever comprises T-shaped elastic rod, be arranged on the active briquetting and the driven briquetting that be arranged on T-shaped elastic rod downside end of T-shaped elastic rod upside near top board, initiatively briquetting is arranged on the position of T-shaped elastic rod upside near top board by bonding or welding, initiatively briquetting is 1/10 ~ 1/2 of T-shaped elastic rod jib-length to the distance of top board, driven briquetting is arranged on T-shaped elastic rod downside end by bonding or welding, supplemental support parts comprise arc surface base plate, supporting bracket, top board and connector, arc surface base plate, copper polar plate, supporting bracket, T-shaped elastic rod and top board arrange successively from bottom to top, on arc surface base plate, copper polar plate, supporting bracket, T-shaped elastic rod and top board, all offer and can, for the connection holes connecting, be connected as one through after the connection holes of each part by connector, in the vertical direction, the height of the aspect ratio top board upper surface of described active briquetting upper surface is high by 0.2 ~ 1.8
mm, arc surface base plate one end offers the connection holes for connecting use, other end upper surface is arc surface, arc surface is tangent with upper surface topmost, the center of circle of arc surface is under incision superius, the upper end of arc surface is concordant with the end of piezoelectric ceramic piece, the width of the width>=piezoelectric ceramic piece of arc surface base plate, the length of the arc surface of arc surface base plate length>=piezoelectric ceramic piece of projection on bottom surface, the radius value of arc surface is 50
mm~ 340
mmbetween, arc surface base plate, supporting bracket, top board, active briquetting and driven briquetting are non-conducting material, A piezoelectric ceramic piece, B piezoelectric ceramic piece and copper polar plate are all connected to power conversion circuits and energy accumulating device.
2. the deformation cantilever lever piezo-electric generating assembly that waits according to claim 1, is characterized in that: described arc surface base plate is plastic material.
3. the deformation cantilever lever piezo-electric generating assembly that waits according to claim 1, is characterized in that: described arc surface base plate is wood materials.
4. the deformation cantilever lever piezo-electric generating assembly that waits according to claim 1, is characterized in that: described arc surface base plate is ceramic material.
5. the deformation cantilever lever piezo-electric generating assembly that waits according to claim 1, is characterized in that: described arc surface base plate is glass material.
6. according to the assembly such as piezo-electric generating such as lever such as cantilever such as deformation such as grade described in claim 1 ~ 5 arbitrary, it is characterized in that: described top board, supporting bracket, active briquetting and driven briquetting are plastic material.
7. according to the assembly such as piezo-electric generating such as lever such as cantilever such as deformation such as grade described in claim 1 ~ 5 arbitrary, it is characterized in that: described top board, supporting bracket, active briquetting and driven briquetting are wood materials.
8. according to the assembly such as piezo-electric generating such as lever such as cantilever such as deformation such as grade described in claim 1 ~ 5 arbitrary, it is characterized in that: described top board, supporting bracket, active briquetting and driven briquetting are ceramic material.
9. according to the assembly such as piezo-electric generating such as lever such as cantilever such as deformation such as grade described in claim 1 ~ 5 arbitrary, it is characterized in that: described top board, supporting bracket, active briquetting and driven briquetting are glass material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382179.1A CN104092407A (en) | 2014-08-06 | 2014-08-06 | Equal-deformation cantilever lever type piezoelectric power generation component |
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|---|---|---|---|
| CN201410382179.1A CN104092407A (en) | 2014-08-06 | 2014-08-06 | Equal-deformation cantilever lever type piezoelectric power generation component |
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| CN201410382179.1A Pending CN104092407A (en) | 2014-08-06 | 2014-08-06 | Equal-deformation cantilever lever type piezoelectric power generation component |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218848A (en) * | 2014-10-09 | 2014-12-17 | 吉林大学 | Self-adaptive piezoelectric generation cantilever beam |
| CN105680724A (en) * | 2016-04-25 | 2016-06-15 | 苏州科技学院 | Modular buried piezoelectric power generation device |
| CN105743389A (en) * | 2016-04-25 | 2016-07-06 | 苏州科技学院 | Equal-stress cantilever lever intermediate-pressure type piezoelectric power generation module |
| CN108429488A (en) * | 2018-03-09 | 2018-08-21 | 安徽大学 | A kind of piezoelectric energy recovery device |
| CN108692623A (en) * | 2018-04-13 | 2018-10-23 | 武汉理工大学 | A kind of non-electric shock conducting tube detonator piezoelectric ceramic igniter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218848A (en) * | 2014-10-09 | 2014-12-17 | 吉林大学 | Self-adaptive piezoelectric generation cantilever beam |
| CN105680724A (en) * | 2016-04-25 | 2016-06-15 | 苏州科技学院 | Modular buried piezoelectric power generation device |
| CN105743389A (en) * | 2016-04-25 | 2016-07-06 | 苏州科技学院 | Equal-stress cantilever lever intermediate-pressure type piezoelectric power generation module |
| CN105680724B (en) * | 2016-04-25 | 2017-06-20 | 苏州科技大学 | A kind of modular buried piezoelectric generating device |
| CN108429488A (en) * | 2018-03-09 | 2018-08-21 | 安徽大学 | A kind of piezoelectric energy recovery device |
| CN108429488B (en) * | 2018-03-09 | 2019-05-03 | 安徽大学 | A kind of piezoelectric energy recovery device |
| CN108692623A (en) * | 2018-04-13 | 2018-10-23 | 武汉理工大学 | A kind of non-electric shock conducting tube detonator piezoelectric ceramic igniter |
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Address after: 215009 Suzhou City, Jiangsu province high tech Zone CREE Road, No. 1 Applicant after: Suzhou University of Science and Technology Address before: 215009 Suzhou City, Jiangsu province high tech Zone CREE Road, No. 1 Applicant before: University of Science and Technology of Suzhou |
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