CN106555727B - Ocean wave energy piezoelectric power generation device and working mode thereof - Google Patents
Ocean wave energy piezoelectric power generation device and working mode thereof Download PDFInfo
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- 238000010248 power generation Methods 0.000 title claims abstract description 93
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 230000005284 excitation Effects 0.000 claims abstract description 5
- 239000000919 ceramic Substances 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000005452 bending Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract 1
- 230000000737 periodic effect Effects 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 14
- 238000001514 detection method Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 238000011161 development Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
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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
- H02N2/186—Vibration harvesters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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Abstract
The invention discloses an ocean wave energy piezoelectric power generation device and a working mode thereof. The inside of float set up piezoelectric power generation device, piezoelectric power generation device passes through the tip of elastic beam and the interior wall connection of spherical float, a plurality of piezoceramics pieces set up the upper and lower surface at the elastic beam, the upper end of connecting rod is passed through sealing device and is connected with piezoelectric power generation device's elastic beam, the lower extreme of connecting rod with the counter weight device is fixed. When the piezoelectric power generation device works, the floater, the counterweight device and the connecting rod form a two-degree-of-freedom resonance system, relative motion is generated under the excitation of ocean waves, and mechanical energy is converted into electric energy to be output through the periodic vibration of the piezoelectric power generation device. The invention fully utilizes ocean wave energy to carry out piezoelectric power generation, has the characteristics of simple and compact structure and convenient installation and implementation, and is beneficial to popularization and application.
Description
Technical Field
The invention relates to an ocean wave energy power generation device, in particular to an ocean wave energy piezoelectric power generation device and a working mode thereof.
Background
Ocean wave energy is an important ocean energy source and has great development and utilization values. With the rapid development of modern technology, various ways of utilizing ocean wave energy have been proposed. Mainly comprises a floating type power generation mode, an oscillating water column type power generation mode and a pendulum wave power generation mode. The traditional floating type power generation mode mostly adopts complex floating and power generation mechanisms, and meanwhile, the power generation mechanism is complex and the energy utilization rate is low.
Disclosure of Invention
The invention aims to solve the technical problem of providing an ocean wave energy piezoelectric power generation device and a working mode thereof aiming at the defects related in the background technology.
The invention adopts the following technical scheme for solving the technical problems:
an ocean wave energy piezoelectric power generation device comprises a floater, a counterweight device and a connecting rod;
the floater is provided with a sealed cavity, and a piezoelectric power generation device is arranged in the cavity;
the connecting rod comprises an upper connecting rod, a lower connecting rod and an elastic device, one end of the upper connecting rod is connected with one end of the lower connecting rod through the elastic device, the other end of the upper connecting rod extends into the floater to be fixedly connected with the piezoelectric power generation device, and the other end of the lower connecting rod is fixedly connected with the counterweight device;
the floater floats on the water surface, the counterweight device sinks into the water bottom, and the floater, the counterweight device and the connecting rod form a two-degree-of-freedom resonance system which can generate relative motion under the excitation of ocean waves.
As a further optimized scheme of the ocean wave energy piezoelectric power generation device, the elastic device adopts a spring.
As a further optimization scheme of the ocean wave energy piezoelectric power generation device, the piezoelectric power generation device comprises a connecting plate and a plurality of piezoelectric power generation units;
the piezoelectric power generation unit comprises an elastic beam and a plurality of piezoelectric ceramic pieces arranged on the upper surface and the lower surface of the elastic beam, one end of the elastic beam is fixedly connected with the connecting plate, and the other end of the elastic beam is fixedly connected with the cavity wall of the floater;
the elastic beams of each piezoelectric power generation unit are positioned on the same plane;
the upper connecting rod extends into the floater and is fixedly connected with the connecting plate.
As a further optimized scheme of the ocean wave energy piezoelectric power generation device, a sealing device for water prevention is arranged at the joint of the upper connecting rod and the bottom of the floater.
As a further optimized scheme of the ocean wave energy piezoelectric power generation device, a through hole for the upper connecting rod to penetrate through is formed in the connecting plate, and a spherical structure for limiting is arranged at one end, penetrating through the through hole in the connecting plate, of the upper connecting rod.
As a further optimization scheme of the ocean wave energy piezoelectric power generation device, the number of the piezoelectric power generation units is 8, and included angles between elastic beams of the piezoelectric power generation units are equal.
As a further optimization scheme of the ocean wave energy piezoelectric power generation device, the piezoelectric ceramic plates are polarized along the thickness direction.
The invention also discloses a working mode based on the ocean wave energy piezoelectric power generation device, which comprises the following steps:
step 1), the floater is impacted by ocean waves and the relative position of the counterweight device changes, so that the connecting rod vibrates;
step 2), the upper end of the upper connecting rod axially generates displacement to drive the elastic beam and the piezoelectric ceramic piece of each piezoelectric power generation unit to generate bending vibration;
step 3), generating charges on the surface of the piezoelectric ceramic piece along the thickness direction to realize piezoelectric power generation;
step 4), the elastic device stores the energy of the impact of the ocean waves;
and 5), the elastic device transmits energy to the upper connecting rod to drive the elastic beam and the piezoelectric ceramic piece of each piezoelectric power generation unit to perform bending vibration, so that piezoelectric power generation is realized.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
the invention fully utilizes the huge kinetic energy of wave surging on the water surface and converts the kinetic energy into electric energy, and develops the natural energy of the wave surging into the electric energy provided for the satellite positioning equipment, the wireless communication system and the hydrological monitoring and sonar detection device, thereby being beneficial to the utilization and development of clean energy and conforming to the development trend of clean and efficient electric energy of human beings. The invention has simple and compact structure, is convenient to install and implement and is beneficial to popularization and application.
Drawings
Fig. 1 is a schematic structural principle diagram of an ocean wave energy piezoelectric power generation device of the invention;
fig. 2 is a schematic structural view of an array type elastic beam of the piezoelectric power generating unit of the float of the present invention;
FIG. 3 is a schematic view of the piezoelectric power generating unit of the float being connected to the connecting rod;
FIG. 4 is a schematic view of the counterweight device coupled to the connecting rod;
fig. 5 is a power generation principle diagram of the piezoelectric power generation unit of the float;
FIG. 6 is a schematic diagram of a satellite positioning system and communication system provided within the float;
FIG. 7 is a schematic view of a detection system and communication system provided within the counterweight device;
FIG. 8 is an application of the power generation means also disposed within the counterweight means;
figure 9 is an application form employing an array of floats.
In the figure, 1-float, 11-sealing device, 2-counterweight device, 3-connecting rod, 31-spring, 32-upper connecting rod, 33-lower connecting rod, 34-connecting plate, 4-piezoelectric generating device, 41-elastic beam, 42-piezoelectric ceramic plate, 5-detecting device, 6-communication device, 7-positioning device and 8-sonar detecting device.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the attached drawings:
referring to fig. 1, the piezoelectric power generation device using ocean wave energy of the present invention is applied to the sea surface in the ocean or the water area generating wave, surge and tidal energy, and fully utilizes the energy generated by the wave surge and converts it into electric energy. The sea surface floater piezoelectric generating set comprises a floater 1, a counterweight device 2 and a connecting rod 3 for connecting the floater 1 and the counterweight device 2. The float 1 and the counterweight device 2 of the invention adopt a sealing structure.
The floater 1 is provided with a sealed cavity, and a piezoelectric power generation device 4 is arranged in the cavity; the connecting rod 3 comprises an upper connecting rod 32, a lower connecting rod 33 and an elastic device 31, one end of the upper connecting rod 32 is connected with one end of the lower connecting rod 33 through the elastic device 31, the other end of the upper connecting rod extends into the floater 1 to be fixedly connected with the piezoelectric power generation device 4, and the other end of the lower connecting rod 33 is fixedly connected with the counterweight device 2; the floater 1 floats on the water surface, the counterweight device 2 sinks into the water bottom, and the floater 1, the counterweight device 2 and the connecting rod 3 form a two-degree-of-freedom resonance system which can generate relative motion under the excitation of ocean waves.
The elastic means 31 are preferably springs.
The piezoelectric power generation device 4 arranged in the floater 1 comprises a connecting plate 34 and a plurality of piezoelectric power generation units, each piezoelectric power generation unit comprises an elastic beam 41 and a plurality of piezoelectric ceramic plates 42 arranged on the upper surface and the lower surface of the elastic beam 41, one end of the elastic beam 41 is fixedly connected with the connecting plate 34, and the other end of the elastic beam is fixedly connected with the cavity wall of the floater 1; the elastic beams 41 of the piezoelectric power generation units are positioned on the same plane; the upper connecting rod 32 extends into the floater 1 and is fixedly connected with the connecting plate 34. And a sealing device 11 for preventing water is arranged at the joint of the upper connecting rod 32 and the bottom of the floater 1. The float 1 has a sealed spherical structure in the present embodiment, and other structures such as a circular truncated cone and a tapered circular truncated cone may be used.
As shown in fig. 2, in the embodiment, the piezoelectric power generating device 4 is provided with 8 piezoelectric power generating units 4a, 4b, 4c, 4d, 4e, 4f, 4g, 4h, and the included angles between the elastic beams 41 of the respective piezoelectric power generating units are equal. The piezoelectric power generating elements 4a and 4b are symmetrical, the piezoelectric power generating elements 4c and 4d are symmetrical, the piezoelectric power generating elements 4e and 4f are symmetrical, and the piezoelectric power generating elements 4g and 4h are symmetrical. The multiple groups of piezoelectric power generation units can adopt an integrally formed structure in the mechanism, so that when the piezoelectric power generation units are fixedly connected and matched with the connecting rod 3, the piezoelectric power generation device is provided with through holes and other structures which penetrate through the piezoelectric power generation device. When the piezoelectric power generator of the present invention is operated, the force generated by the external impact force on the piezoelectric power generator can be sufficiently and uniformly converted into charge energy of an efficient piezoelectric effect.
In the specific embodiment, a plurality of piezoelectric power generating units form an array type elastic beam 41, wherein the elastic beam 41 is made of an elastic material, and the piezoelectric ceramic pieces 42 are all polarized along the thickness direction.
Referring to fig. 3, the connecting rod 3 includes an upper connecting rod 32, a lower connecting rod 33, and a spring 31 connecting the middles of the upper and lower connecting rods 32, 33. The upper connecting rod 32 penetrates through the sealing device 11 and extends into the floater 1, a through hole for the upper connecting rod 32 to penetrate through is formed in the connecting plate 34, and a spherical structure for limiting is arranged at one end, penetrating through the through hole in the connecting plate 34, of the upper connecting rod 32.
Referring to fig. 4, the lower connecting rod 33 of the connecting device is fixedly connected with the counterweight device 2.
In order to cooperate with the piezoelectric power generation device, the piezoelectric power generation device further comprises a voltage conversion circuit device, and the voltage conversion circuit device comprises a rectifying circuit, a voltage stabilizing charging circuit, an electric storage device, a control device and an output device.
In a specific embodiment, the upper and lower connecting rods 32 and 33 of the connecting rod 3 of the present invention can be made of corrosion-resistant material, so as to increase the service life in water, and the spring 31 can be subjected to corrosion-resistant treatment, so as to increase the service life.
The working mode of the ocean wave energy piezoelectric power generation device comprises the following steps:
and step 5, the elastic device 31 transmits energy to the upper connecting rod 32 to drive the elastic beam 41 and the piezoelectric ceramic plate 42 of each piezoelectric power generation unit to perform bending vibration, so that piezoelectric power generation is realized.
Referring to fig. 5, to facilitate understanding of the power generation operation of the power generation apparatus of the present invention, the following brief description is made:
according to the invention, under the action of upward surging pushing of sea waves, the floater 1 transfers the acting force of the sea waves to the piezoelectric power generation device 4 by the upper connecting rod 32 of the connecting rod 3, the piezoelectric ceramic piece on the piezoelectric power generation device 4 generates deformation to generate and accumulate electric energy, under the action of a first period of the sea waves, the elastic beam 41 generates upward deformation from a first initial period T = nT, the piezoelectric ceramic piece 42 is driven to bend upward to generate deformation to generate charge change, and the electric energy is accumulated in a 1/4 period T = T/4+ nT state, when the upper connecting rod 32 of the connecting rod 3 is no longer subjected to the acting force of the sea waves, the elastic beam 41 and the piezoelectric ceramic piece 42 recover to a normal state to be horizontal in a 1/2 period T = T/2+ nT state, the downward surging action of the 3/4 period of the sea waves pushes the upper connecting rod 32 of the connecting rod 3 to act on the elastic beam 41, the elastic beam 41 drives the piezoelectric ceramic plate 42 to bend downwards to generate deformation in the 3/4 th period T =3T/4+ nT state, so as to generate charge change and accumulate electric energy, and when sea waves do not act on the upper connecting rod 32 of the connecting rod 3 any more, the elastic beam 41 and the piezoelectric ceramic plate 42 are defined to restore to the level of the initial period T = nT again. Repeatedly, the upper connecting rod 32 of the connecting rod 3 pushes the elastic beam 41 and the piezoelectric ceramic plate 42 to deform under the action of the surging action of sea waves so as to accumulate electric energy, and when the elastic beam 41 and the piezoelectric ceramic plate 42 return to the horizontal state without the action of the surging action of sea waves, the elastic beam 41 drives the piezoelectric ceramic plate 42 to periodically and continuously accumulate electric energy, so that the electric energy accumulation is realized, and the electric energy is converted by the power generation piezoelectric device 4 so as to be supplied to electric equipment.
The float 1 in this embodiment is of a sealed spherical structure, but in other embodiments, other structures such as an ellipsoid, a cylinder, or a conical bottom platform may be used.
The counterweight device 2 in this embodiment adopts a sealed spherical structure, and in other embodiments, other structures such as an ellipsoidal shape, a cylindrical shape, or a conical bottom platform can be adopted.
The working principle of the ocean wave energy piezoelectric power generation device of one embodiment of the invention is briefly described as follows:
when the ocean wave energy piezoelectric power generation device is placed on the sea surface generating wave surge or the water surface of other water areas, the spherical floater 1 floats on the sea surface, the counterweight device 2 is positioned below the sea surface, and the floater 1, the connecting rod 3 and the counterweight device 2 form a two-degree-of-freedom vibration system and generate relative motion under the excitation of ocean waves. A part of energy makes the piezoelectric ceramic piece of the piezoelectric power generation device of the floater generate bending deformation through the connecting rod 3 to form electric charge, the electric charge on the surface of the piezoelectric ceramic piece distributed in an array is collected and converted to realize piezoelectric power generation, and the other part of energy is stored in a vibration system and is gradually released in subsequent vibration.
Referring to fig. 6, in the embodiment, the inside of the float 1 is further provided with a detecting device 5, a communication device 6 and a positioning device 78 which are connected to the piezoelectric generating device 4, the detecting device 5 receives the power supply of the piezoelectric generating device 4 to realize the sea surface detection, the positioning device 7 is used for realizing the marine position positioning of the invention, and the communication device 6 is connected to other communication equipment such as a communication satellite, a ground communication base station or a sea surface communication base station to realize data communication.
In the embodiment shown in fig. 7, a hydrological monitoring and sonar detection device 8 can be further provided in the counterweight device, underwater detection can be performed, and data can be sent to a remote base station through the wireless communication device 7 in the floater.
In practical applications, as shown in fig. 8, in order to improve the power generation efficiency, a power generation device may be provided in the counterweight device, and the power generation device may supply electric power to the electronic equipment in the counterweight device according to the same principle as the power generation device in the float.
In practical application, in order to improve the power generation efficiency, a mode shown in fig. 9 can also be adopted, and a plurality of buoys with the same structure are used to form an array, so that the wave energy is utilized to the maximum extent.
In conclusion, the invention fully utilizes tidal kinetic energy generated by ocean wave surge to excite the two-degree-of-freedom resonance system consisting of the floater, the balance weight and the connecting rod to generate relative motion, and mechanical energy is converted into electric energy through the piezoelectric ceramic piece of the power generation device. The invention has simple and compact structure, is convenient to install and implement and is beneficial to popularization and application. Meanwhile, a satellite positioning system, a detection system and a wireless communication system can be arranged in the floater, the detection system is arranged in the counterweight device, detection data and position information can be uploaded to a remote base station through the wireless communication system, and a control instruction of the remote base station is received, so that the integrated function of sea surface monitoring and power generation is realized.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An ocean wave energy piezoelectric power generation device is characterized by comprising a floater (1), a counterweight device (2) and a connecting rod (3);
the floater (1) is provided with a sealed cavity, and a piezoelectric power generation device (4) is arranged in the cavity;
the connecting rod (3) comprises an upper connecting rod (32), a lower connecting rod (33) and an elastic device (31), one end of the upper connecting rod (32) is connected with one end of the lower connecting rod (33) through the elastic device (31), the other end of the upper connecting rod extends into the floater (1) and is fixedly connected with the piezoelectric generating device (4), and the other end of the lower connecting rod (33) is fixedly connected with the counterweight device (2);
the floater (1) floats on the water surface, the counterweight device (2) sinks into the water bottom, and the floater (1), the counterweight device (2) and the connecting rod (3) form a two-degree-of-freedom resonance system which can generate relative motion under the excitation of ocean waves;
the elastic device (31) adopts a spring;
the piezoelectric power generation device (4) comprises a connecting plate (34) and a plurality of piezoelectric power generation units;
the piezoelectric power generation unit comprises an elastic beam (41) and a plurality of piezoelectric ceramic plates (42) arranged on the upper surface and the lower surface of the elastic beam (41), one end of the elastic beam (41) is fixedly connected with the connecting plate (34), and the other end of the elastic beam is fixedly connected with the cavity wall of the floater (1);
the elastic beams (41) of the piezoelectric power generation units are positioned on the same plane;
the upper connecting rod (32) extends into the floater (1) and is fixedly connected with the connecting plate (34).
2. The ocean wave energy piezoelectric power generation device according to claim 1, characterized in that a sealing device (11) for water prevention is arranged at the joint of the upper connecting rod (32) and the bottom of the floater (1).
3. The ocean wave energy piezoelectric power generation device according to claim 1, characterized in that a through hole for the upper connecting rod (32) to pass through is formed in the connecting plate (34), and a spherical structure for limiting is arranged at one end of the upper connecting rod (32) which passes through the through hole in the connecting plate (34).
4. The ocean wave energy piezoelectric power generation device according to claim 1, wherein the number of the piezoelectric power generation units is 8, and included angles between elastic beams of the piezoelectric power generation units are equal.
5. The ocean wave energy piezoelectric power generation device according to claim 1, wherein the piezoceramic sheets (42) are all polarized in a thickness direction.
6. The operating mode of the ocean wave energy piezoelectric power generation device according to claim 1, comprising the following steps:
step 1), the floater (1) is impacted by ocean waves, and the relative position of the counterweight device (2) changes, so that the connecting rod (3) vibrates;
step 2), the upper end of the upper connecting rod (32) axially generates displacement to drive the elastic beam (41) and the piezoelectric ceramic piece (42) of each piezoelectric power generation unit to generate bending vibration;
step 3), generating charges on the surface of the piezoelectric ceramic piece (42) along the thickness direction to realize piezoelectric power generation;
step 4), the elastic device (31) stores the energy of the impact of the ocean waves;
and 5), the elastic device (31) transmits energy to the upper connecting rod (32) to drive the elastic beam (41) and the piezoelectric ceramic piece (42) of each piezoelectric power generation unit to perform bending vibration, so that piezoelectric power generation is realized.
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| US5578889A (en) * | 1995-02-14 | 1996-11-26 | Ocean Power Technologies, Inc. | Piezoelectric generation of electrical power from surface waves on bodies of water using suspended weighted members |
| KR20100066029A (en) * | 2008-12-09 | 2010-06-17 | 삼성중공업 주식회사 | Self energy-generating electrolytic protection system |
| CN102444536A (en) * | 2011-12-13 | 2012-05-09 | 山东科技大学 | Small-sized marine piezoelectric electricity generating device |
| CN203135752U (en) * | 2013-03-14 | 2013-08-14 | 上海电机学院 | Wave piezoelectric power-generating device |
| CN103982365A (en) * | 2014-04-30 | 2014-08-13 | 南昌航空大学 | Miniature wave energy power generation device based on piezoelectric effect |
| CN204663752U (en) * | 2015-04-11 | 2015-09-23 | 南昌航空大学 | Oscillating float type piezoelectricity wave transducing energy saving device |
| CN205657609U (en) * | 2016-03-22 | 2016-10-19 | 安阳师范学院 | Wave energy piezoelectricity generator |
| CN206290361U (en) * | 2016-11-24 | 2017-06-30 | 南京航空航天大学 | A kind of ocean wave energy piezoelectric generating device |
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