CN110649836A - High-power longitudinal array formula energy harvesting device of wide band of qxcomm technology - Google Patents
High-power longitudinal array formula energy harvesting device of wide band of qxcomm technology Download PDFInfo
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- CN110649836A CN110649836A CN201910991906.7A CN201910991906A CN110649836A CN 110649836 A CN110649836 A CN 110649836A CN 201910991906 A CN201910991906 A CN 201910991906A CN 110649836 A CN110649836 A CN 110649836A
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- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
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- H02N2/186—Vibration harvesters
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Abstract
The longitudinal array type energy harvesting device comprises a device shell and longitudinal array nonlinear simple support plate piezoelectric beams, wherein a plurality of groups of the longitudinal array nonlinear simple support plate piezoelectric beams are arranged, the left side and the right side of the inner surface of the device shell are fixedly connected with clamping components, one end of each longitudinal array nonlinear simple support plate piezoelectric beam is connected with the clamping components, and the longitudinal array nonlinear simple support plate piezoelectric beams are arranged in a crossed mode. The piezoelectric vibration energy harvesting device is mainly used in the fields of microelectronics, wireless networks and the like, and has the advantages of small device structure space volume, simple structure, low cost, small piezoelectric beam rigidity, large output power, long service life, stable work and the like.
Description
Technical Field
The invention belongs to the technical field of piezoelectric vibration energy capture, and particularly relates to a longitudinal array type and omnidirectional broadband high-power piezoelectric energy capture device.
Background
With the rapid development of the application of low-energy-consumption products such as microelectronics, wireless networks, MEMS and the like, the traditional energy supply mode using chemical batteries as the main energy supply mode has the defects of large mass, large volume, limited energy supply service life, environmental pollution and the like, and the batteries need to be replaced after long-term work, otherwise, the limitations such as data loss or data damage and the like can be caused. The vibration energy is ubiquitous in daily life, the piezoelectric vibration energy capturing device has the advantages of long service life, high output energy density and the like, and the vibration energy capturing device made of the piezoelectric material has the advantages of simple structure, easiness in processing, no need of an external power supply, convenience in realizing miniaturization and integration and the like, so that the vibration energy collecting technology has wide prospects and becomes a research hotspot of scholars at home and abroad.
The study of scholars at home and abroad on piezoelectric energy harvester is more about the study on piezoelectric bimorph cantilever beam type structure, the structure is often narrower in working frequency band and lower in energy collection efficiency, so that the function of realizing broadband and low-amplitude vibration omnidirectional high-efficiency collection is the key point of improvement of the device.
Disclosure of Invention
Aiming at the problems, the invention aims to provide an omnidirectional broadband high-power longitudinal array type energy harvesting device which has the advantages of compact structure, small rigidity, frequency band widening, low-amplitude vibration omnidirectional high-efficiency acquisition and the like, and solves the problems of large structure space volume, low energy density, small acquisition bandwidth, single acquisition dimension, low energy acquisition efficiency in a low-amplitude environment and the like of the conventional vibration energy harvester.
In order to achieve the purpose, the invention adopts the following technical scheme: the longitudinal array type energy harvesting device comprises a device shell and a longitudinal array nonlinear simple support plate piezoelectric beam set, wherein the longitudinal array nonlinear simple support plate piezoelectric beam set is provided with a plurality of sets, the left side and the right side of the inner surface of the device shell are fixedly connected with clamping components, one end of the longitudinal array nonlinear simple support plate piezoelectric beam is connected with the clamping components, the longitudinal array nonlinear simple support plate piezoelectric beam set is arranged in a crossed mode, the device shell is a square transparent shell and made of acrylic materials;
the longitudinal array nonlinear simple support plate piezoelectric beam group comprises a top array simple support plate piezoelectric beam, a middle array simple support plate piezoelectric beam, a bottom array simple support plate piezoelectric beam, an L-shaped connecting plate, a T-shaped connecting plate and a nonlinear mass part, wherein the top array simple support plate piezoelectric beam, the middle array simple support plate piezoelectric beam and the bottom array simple support plate piezoelectric beam respectively comprise piezoelectric patches and piezoelectric beams, and the components, materials and the number of the piezoelectric beams are the same;
the piezoelectric beam clamping device is characterized in that one ends of the top array simple support plate piezoelectric beam, the middle array simple support plate piezoelectric beam and the bottom array simple support plate piezoelectric beam are completely fixed between the clamping components, one ends of the L-shaped connecting plates are connected with the other ends of the top array simple support plate piezoelectric beam and the bottom array simple support plate piezoelectric beam, the connecting modes of the top position piezoelectric beam and the bottom position piezoelectric beam are hinged, the connecting mode of the middle array simple support plate piezoelectric beam and the middle position piezoelectric beam is a sliding groove connecting mode, the other ends of the middle array simple support plate piezoelectric beam and the T-shaped connecting plates are connected, the connecting modes of the top position piezoelectric beam and the bottom position piezoelectric beam are hinged, and the connecting mode of the middle position piezoelectric beam and.
Further, nonlinear mass portion includes spring, main quality piece and vice quality piece, main quality piece passes through glue and bonds in one side of L type connecting plate, vice quality piece is square, and adopts spring coupling between the adjacent vice quality piece, uses spring coupling between adjacent vice quality piece and L type connecting plate, the T type connecting plate, every equal 2 grams of main quality piece, every equal 1.5 grams of vice quality piece.
Further, the centre gripping subassembly includes bolt fastening spare and splint, bolt fastening spare is provided with a plurality of groups, and bolt fastening spare runs through swing joint splint in proper order, bolt fastening spare all adopts the standard component, and splint adopt the ya keli material, and the size can be selected according to the practical application demand.
Furthermore, the piezoelectric patches are PZT-5H piezoelectric ceramic sheets, the structural size is 40 multiplied by 15 multiplied by 0.2mm, both polar surfaces of the piezoelectric patches are welded with leads, the piezoelectric beams are made of H60 brass sheets, the structural size is 50 multiplied by 15 multiplied by 0.2mm, and the piezoelectric patches are bonded on the upper surfaces of the piezoelectric beams through conductive glue.
The beneficial effects of the invention are as follows.
1. The piezoelectric beam structure has the advantages of small structure space volume, simple structure, low cost, easy processing, small rigidity of the piezoelectric beam and large output power.
2. The invention can realize omnidirectional energy acquisition in a low-frequency low-amplitude vibration environment.
3. The device has wide acquisition frequency band and strong environment adaptability.
4. The device has long service life and stable and reliable work.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a bottom view of the structure of the present invention;
FIG. 3 is a schematic diagram of a longitudinal array nonlinear simple support plate piezoelectric beam set according to the present invention;
FIG. 4 is a bottom view of the piezoelectric beam assembly of the longitudinal array nonlinear simple support plate of the present invention;
fig. 5 is a half-section schematic view of the top array simple support plate piezoelectric beam of the invention.
In the figure: the device comprises a device shell 1, a longitudinal array nonlinear simple support plate piezoelectric beam group 2, a clamping assembly 3, a top array simple support plate piezoelectric beam 4, a middle array simple support plate piezoelectric beam 5, a bottom array simple support plate piezoelectric beam 6, a 7L-shaped connecting plate, an 8T-shaped connecting plate, a nonlinear mass portion 9, a main mass block 10, a spring 11, a pair of mass blocks 12, a bolt fastener 13, a clamping plate 14, a piezoelectric sheet 15, a piezoelectric beam 16, a hinge 17 and a chute 18.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 5, the embodiment of the present invention includes: a high-power longitudinal array energy harvesting device of wide-band of qxcomm technology, including device outer casing 1 and longitudinal array nonlinear simple support plate piezoelectric beam group 2, the linear simple support plate piezoelectric beam group 2 of longitudinal array has several groups, the left and right sides of the inner surface of the device outer casing 1 fixedly connects with the clamping assembly 3, one end of the linear simple support plate piezoelectric beam group 2 of longitudinal array is connected with clamping assembly 3, the linear simple support plate piezoelectric beam group 2 of longitudinal array presents the form of crossing and arranges, the outer casing is a square transparent body, and adopt acrylic material;
the longitudinal array nonlinear simple support plate piezoelectric beam group 2 comprises a clamping component 3, a top array simple support plate piezoelectric beam 4, a middle array simple support plate piezoelectric beam 5, a bottom array simple support plate piezoelectric beam 6, an L-shaped connecting plate 7, a T-shaped connecting plate 8 and a nonlinear quality part 9, wherein the top array simple support plate piezoelectric beam 4, the middle array simple support plate piezoelectric beam 5 and the bottom array simple support plate piezoelectric beam 6 respectively comprise a piezoelectric sheet 15 and a piezoelectric beam 16, and the components, materials and the number are the same;
the top array simple support plate piezoelectric beam 4, middle array simple support plate piezoelectric beam 5, the one end of bottom array simple support plate piezoelectric beam 6 is all fixed completely between centre gripping subassembly 3, top array simple support plate piezoelectric beam 4, the one end of L type connecting plate 7 is connected to the other end of bottom array simple support plate piezoelectric beam 6, and be articulated 17 with the connected mode of top position and the piezoelectric beam 16 of bottom position, the connected mode with the piezoelectric beam 16 of intermediate position is spout connection 18, the other end of middle array simple support plate piezoelectric beam 5 is connected with the one end of T type connecting plate 8, and be articulated 17 with the connected mode of top position and the piezoelectric beam 16 of bottom position, it is spout connection 18 with intermediate position piezoelectric beam 16 connected mode.
The nonlinear mass portion 9 comprises a spring 11, a main mass block 10 and an auxiliary mass block 12, the main mass block 10 is bonded on one side of the L-shaped connecting plate 7 through glue, the auxiliary mass block 12 is square, adjacent auxiliary mass blocks 12 are connected through the spring 11, the adjacent auxiliary mass blocks 12 are connected with the L-shaped connecting plate 7 and the T-shaped connecting plate 8 through the spring 11, each main mass block 10 is 2 g, and each auxiliary mass block 12 is 1.5 g.
The clamping assembly 3 comprises bolt fasteners 13 and clamping plates 14, the bolt fasteners 13 are provided with a plurality of groups, the bolt fasteners 13 sequentially penetrate through the movably connected clamping plates 14, the bolt fasteners 13 all adopt standard parts, the clamping plates 14 adopt acrylic materials, and the sizes can be selected according to actual application requirements.
The piezoelectric sheet 15 is a PZT-5H piezoelectric ceramic sheet with the structural size of 40 multiplied by 15 multiplied by 0.2mm, leads are welded on the two polar surfaces of the piezoelectric sheet 15, the piezoelectric beam 16 is made of H60 brass sheet material with the structural size of 50 multiplied by 15 multiplied by 0.2mm, and the piezoelectric sheet 15 is bonded on the upper surface of the piezoelectric beam 16 through conductive glue.
When in work: when the device shell 1 of the array type piezoelectric energy harvesting device is fixed on a low-frequency low-amplitude omnidirectional vibration source and vibrates in any direction of space along with the vibration source, the supporting spring 11 generates a component force along the axial direction of the supporting spring 11 under the swinging action of the main mass block 10 and the auxiliary mass block 12, so as to drive the longitudinal array simple support plate piezoelectric beam 16 to do nonlinear omnidirectional vibration, the connection ends of the top array simple support plate piezoelectric beam 4, the middle array simple support plate piezoelectric beam 5 and the bottom array simple support plate piezoelectric beam 6 are combined by the hinge 17 and the chute connection 18 to replace the traditional whole fixed connection mode, the structural rigidity of the longitudinal array simple support plate piezoelectric beam 16 in vibration is greatly reduced, experiments prove that the nonlinear mass part 9 has an amplification effect on vibration, and the response sensitivity of the structure to the earth house vibration is enhanced by the combination of the hinge 17 of the piezoelectric beam 16 and the chute connection 18.
In this case, the number of the piezoelectric beam groups 2 of the longitudinal array simple support plate is four, the number of the array can be properly adjusted according to the application scenario, wherein the working frequency band range and the output power of the vibration energy harvesting device can be properly adjusted by adjusting the mass sizes of the primary mass block 10 and the secondary mass block 12 in the nonlinear mass portion 9, and the vibration energy harvesting device is used for collecting vibration energy under different environments.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modifications, equivalent substitutions, improvements and the like made within the principle of the spirit of the present invention should be considered as infringing the scope of the present invention, and therefore the scope of the present invention should be subject to the scope of the claims.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a powerful longitudinal array energy harvesting device of broadband qxcomm technology, includes device shell (1) and the nonlinear simple support board piezoelectric beam group of longitudinal array (2), its characterized in that: the piezoelectric beam group (2) of the longitudinal array nonlinear simple support plate is provided with a plurality of groups, the left side and the right side of the inner surface of the device shell (1) are fixedly connected with clamping components (3), one end of the piezoelectric beam (16) of the longitudinal array nonlinear simple support plate is connected with the clamping components (3), the piezoelectric beam group (2) of the longitudinal array nonlinear simple support plate is arranged in a cross mode, the device shell is a square transparent shell and made of acrylic materials;
the longitudinal array nonlinear simple support plate piezoelectric beam group (2) comprises a top array simple support plate piezoelectric beam (4), a middle array simple support plate piezoelectric beam (5), a bottom array simple support plate piezoelectric beam (6), an L-shaped connecting plate (7), a T-shaped connecting plate (8) and a nonlinear mass part (9), wherein the top array simple support plate piezoelectric beam (4), the middle array simple support plate piezoelectric beam (5) and the bottom array simple support plate piezoelectric beam (6) respectively comprise piezoelectric patches (15) and piezoelectric beams (16), and the components, materials and quantity are the same;
the piezoelectric beam clamping device is characterized in that one end of each of the top array simple support plate piezoelectric beam (4), the middle array simple support plate piezoelectric beam (5) and the bottom array simple support plate piezoelectric beam (6) is completely fixed between the clamping components (3), one end of each of the top array simple support plate piezoelectric beam (4) and the bottom array simple support plate piezoelectric beam (6) is connected with one end of the L-shaped connecting plate (7), the other end of each of the top array simple support plate piezoelectric beam (4) and the bottom array simple support plate piezoelectric beam (6) is hinged (17), the other end of each of the middle array simple support plate piezoelectric beam (5) is connected with one end of the T-shaped connecting plate (8), the connection mode of each of the top array simple support plate piezoelectric beam (16) and the bottom array simple support plate piezoelectric beam is hinged (17), and the connection mode of each of the middle array simple support plate piezoelectric beam (16) is sliding.
2. The omnidirectional wide-band high-power longitudinal array type energy harvesting device according to claim 1, wherein: nonlinear mass portion (9) are including spring (11), main quality piece (10) and vice quality piece (12), main quality piece (10) bond in one side of L type connecting plate (7) through glue, vice quality piece (12) are square, and adopt spring (11) to connect between adjacent vice quality piece (12), connect with spring (11) between adjacent vice quality piece (12) and L type connecting plate (7), T type connecting plate (8), main quality piece (10) are every 2 grams all, and vice quality piece (12) are every 1.5 grams all.
3. The omnidirectional wide-band high-power longitudinal array type energy harvesting device according to claim 1, wherein: centre gripping subassembly (3) include bolt fastening spare (13) and splint (14), bolt fastening spare (13) are provided with a plurality of groups, and bolt fastening spare (13) run through swing joint splint (14) in proper order, bolt fastening spare (13) all adopt the standard component, and splint (14) adopt ya keli material, and the size can be selected according to the practical application demand.
4. The omnidirectional wide-band high-power longitudinal array type energy harvesting device according to claim 1, wherein: the piezoelectric piece (15) is a PZT-5H piezoelectric ceramic piece, the structural size is 40 multiplied by 15 multiplied by 0.2mm, both polar surfaces of the piezoelectric piece (15) are welded with leads, the piezoelectric beam (16) is made of H60 brass sheet material, the structural size is 50 multiplied by 15 multiplied by 0.2mm, and the piezoelectric piece (15) is bonded on the upper surface of the piezoelectric beam (16) through conductive glue.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113507235A (en) * | 2021-07-16 | 2021-10-15 | 安徽理工大学 | Compression-bending composite deformation piezoelectric vibration energy harvesting device and energy harvesting method |
| CN113746371A (en) * | 2021-08-27 | 2021-12-03 | 西安交通大学 | Laminated array simply supported beam piezoelectric vibration energy collector and energy collecting method |
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| TW201144774A (en) * | 2010-06-02 | 2011-12-16 | Univ Nat Sun Yat Sen | A piezoelectric sensor with wide bandwidth |
| CN202210762U (en) * | 2011-09-21 | 2012-05-02 | 武汉钢铁(集团)公司 | Staggered piezo-electricity double-chip-beam type energy-harvesting system |
| CN104796037A (en) * | 2015-04-22 | 2015-07-22 | 北京工业大学 | Wideband piezoelectric power generating device |
| CN109889097A (en) * | 2019-03-26 | 2019-06-14 | 西北工业大学 | A kind of multistable energy capture device with connected effect |
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2019
- 2019-10-17 CN CN201910991906.7A patent/CN110649836A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| TW201144774A (en) * | 2010-06-02 | 2011-12-16 | Univ Nat Sun Yat Sen | A piezoelectric sensor with wide bandwidth |
| CN101895232A (en) * | 2010-08-06 | 2010-11-24 | 武汉钢铁(集团)公司 | Piezoelectric energy harvester with elastic element linkage |
| CN202210762U (en) * | 2011-09-21 | 2012-05-02 | 武汉钢铁(集团)公司 | Staggered piezo-electricity double-chip-beam type energy-harvesting system |
| CN104796037A (en) * | 2015-04-22 | 2015-07-22 | 北京工业大学 | Wideband piezoelectric power generating device |
| CN109889097A (en) * | 2019-03-26 | 2019-06-14 | 西北工业大学 | A kind of multistable energy capture device with connected effect |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113507235A (en) * | 2021-07-16 | 2021-10-15 | 安徽理工大学 | Compression-bending composite deformation piezoelectric vibration energy harvesting device and energy harvesting method |
| CN113746371A (en) * | 2021-08-27 | 2021-12-03 | 西安交通大学 | Laminated array simply supported beam piezoelectric vibration energy collector and energy collecting method |
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