CN108134539A - Wind energy capture power generator based on piezoelectric effect - Google Patents

Wind energy capture power generator based on piezoelectric effect Download PDF

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Publication number
CN108134539A
CN108134539A CN201810150403.2A CN201810150403A CN108134539A CN 108134539 A CN108134539 A CN 108134539A CN 201810150403 A CN201810150403 A CN 201810150403A CN 108134539 A CN108134539 A CN 108134539A
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China
Prior art keywords
piezoelectric
energy
fan blade
power generation
bin
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CN201810150403.2A
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Chinese (zh)
Inventor
王新
马博
马一博
陈度
张圆圆
姚则
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China Agricultural University
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China Agricultural University
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Priority to CN201810150403.2A priority Critical patent/CN108134539A/en
Publication of CN108134539A publication Critical patent/CN108134539A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • H02N2/185Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using fluid streams
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/32Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Wind Motors (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

The present invention provides a kind of wind energy capture power generator based on piezoelectric effect, including at least one first flabellum, shaft member unit, at least one second flabellum, at least one piezoelectric ceramic piece and piezoelectricity storehouse;First flabellum is connect with shaft member unit, for receiving and absorbing wind-force, and converts wind energy into mechanical energy;Shaft member unit is connect successively with the first flabellum and the second flabellum, and is fixedly connected on piezoelectricity storehouse, for mechanical energy to be transferred to the second flabellum from the first flabellum;Second flabellum is connect with shaft member unit, for mechanical energy to be transferred to piezoelectric ceramic piece;Piezoelectric ceramic piece is connect with piezoelectricity storehouse, and vibrational energy is generated, and vibrational energy is transferred to piezoelectricity storehouse for being based on mechanical energy;Piezoelectricity storehouse, for vibrational energy to be converted to electric energy, to complete wind energy capture power generation.The present invention can realize conversion of the wind energy to electric energy, and technical support is provided for small-sized wind power generator, can solve the problems, such as that small-sized electricity consumption place from far-off regions electric energy supply is difficult.

Description

Wind energy capture power generation device based on piezoelectric effect
Technical Field
The invention relates to the field of new energy equipment, in particular to a wind energy capture power generation device based on a piezoelectric effect.
Background
The energy is not renewable, and the problems of environmental pollution, ecological deterioration, energy crisis and the like are accompanied. The wind energy is taken as renewable energy, the reserves are abundant, and the wind energy is converted by the wind energy capturing device, so that the electric energy supply is provided for small-sized power utilization places, and the wind energy capturing device has important significance on the sustainable development of the modern society.
With the improvement of electronic technology and energy storage technology, typical applications of small wind power generation such as wind-solar hybrid streetlamps are more and more seen in the field of vision of people, but the parameters of large wind generating sets are generally used, and the low wind speed power generation conditions are often ignored, so that the system capacity design is insufficient. Piezoelectric type power generation facility adopts the piezoelectric material preparation, as novel energy acquisition equipment, has higher energy conversion efficiency, combines energy storage and converting circuit, can reach better wind power generation effect under the low wind speed condition.
The piezoelectric effect refers to the phenomenon of mechanical energy and electric energy conversion in a piezoelectric medium, and the conventional piezoelectric materials include single crystals, piezoelectric ceramics, piezoelectric high molecular polymers, piezoelectric composite materials and the like. When the characteristics of the piezoelectric ceramics are analyzed, mechanical quantity and electrical quantity need to be combined, the piezoelectric ceramics are both elastic bodies and ferroelectrics, so that the piezoelectric ceramics have mechanical effect and electrical effect at the same time, and the characteristics can be described by a piezoelectric equation:
whereinRepresenting the stress σ when the electric field strength E is zero or other constantjContribution to total strain;is stress sigmajZero or other constant. The first equation represents strain + stress + electric field, and the second equation represents potential shift + stress + electric field.
According to the piezoelectric equation, when a certain force is applied to the piezoelectric ceramic, a certain electric energy can be generated.
In recent years, the research of piezoelectric power generation technology has been greatly advanced. The piezoelectric power generation shoes developed in the prior art can respectively generate average power of 1.3mw and 8.4mw at two ends when people walk at the frequency of 0.9 Hz; in the prior art, piezoelectric type navigation identification is also developed, 6 LED lamps can be lightened by electric energy generated by a piezoelectric device, and the visible distance on an actual test road reaches 200 m; in the prior art, a free-falling ball is used for impacting a metal plate with piezoelectric ceramics adhered to the surface, an equivalent circuit model of piezoelectric power generation is designed, and the conversion efficiency is researched, so that the conclusion that the maximum conversion efficiency of the storage method is 35% and is more than 3 times of the conversion efficiency of the solar cell is obtained.
The piezoelectric devices are not suitable for small-sized power utilization places with extremely high space utilization rate and multiplexing indexes in structure and function. In the conventional power generation device, the power generation device generates power in an electromagnetic induction mode mainly through the rotation of a rotor of the generator. These power generation devices are generally suitable for large-scale power generation places, are not suitable for small-scale power generation places, are large and expensive, are inconvenient to replace parts, and generate certain heat energy in the power generation process.
Disclosure of Invention
The invention provides a wind energy capture power generation device based on piezoelectric effect, which overcomes the problems.
According to one aspect of the invention, a wind energy capture power generation device based on a piezoelectric effect is provided, and comprises at least one first fan blade, a shaft element unit, at least one second fan blade, at least one piezoelectric ceramic piece and a piezoelectric bin; the first fan blade is connected with the shaft element unit and used for receiving and absorbing wind power and converting the wind power into mechanical energy; the shaft element unit is sequentially connected with the first fan blade and the second fan blade, is fixedly connected with the piezoelectric bin, and is used for transmitting the mechanical energy from the first fan blade to the second fan blade; the second fan blade is connected with the shaft element unit and used for transmitting the mechanical energy to the piezoelectric ceramic piece; the piezoelectric ceramic piece is connected with the piezoelectric bin and used for receiving the mechanical energy, generating vibration energy based on the mechanical energy and transmitting the vibration energy to the piezoelectric bin; and the piezoelectric bin is used for converting the vibration energy into electric energy so as to complete wind energy capture power generation.
According to the wind energy capture power generation device based on the piezoelectric effect, the fan blades and the piezoelectric ceramic plates are arranged, so that conversion of wind energy, mechanical energy, elastic potential energy and electric energy can be realized, technical support is provided for a small wind driven generator, a theoretical basis is provided for breeze grid-connected power generation, and the problems of difficulty in electric energy supply and energy source cleanness of small power utilization places in remote areas can be solved.
Drawings
FIG. 1 is a schematic front view of a wind energy capture power generation device based on piezoelectric effect according to an embodiment of the present invention;
FIG. 2 is a schematic side view of a wind energy capture power generation device based on piezoelectric effect according to an embodiment of the present invention;
FIG. 3 is a schematic view of a darrieus fan blade type in an embodiment of the present invention;
wherein,
1. a first fan blade; 2. A low speed shaft; 3. A speed increasing piece;
4. a high speed shaft; 5. A second fan blade; 6. Piezoelectric ceramic plates;
7. a piezoelectric chamber; 8. A supporting seat; 9. An electric box;
10. a base.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
With the increasing demand of human society for energy, the environmental pollution is becoming more serious and people are more and more conscious of protecting the environment, and the search, development and use of new energy are inevitable trends of future development. The traditional energy supply mode has the defects of short service life, frequent replacement and the like, not only causes the waste of materials and the increase of cost, but also brings environmental pollution. The piezoceramic material has a simple structure, is convenient to process, does not discharge toxic and harmful substances into the environment, has fewer related limiting conditions, and is a novel energy-saving and environment-friendly material.
Fig. 1 is a schematic front view of a wind energy capture power generation device based on a piezoelectric effect in an embodiment of the present invention, and fig. 2 is a schematic side view of a wind energy capture power generation device based on a piezoelectric effect in an embodiment of the present invention, as shown in fig. 1 and fig. 2, the wind energy capture power generation device includes at least one first fan blade 1, a shaft unit, at least one second fan blade 5, at least one piezoceramic sheet 6, and a piezoelectric chamber 7; the first fan blade 1 is connected with the shaft unit and used for receiving and absorbing wind power and converting the wind power into mechanical energy; the shaft unit is sequentially connected with the first fan blade 1 and the second fan blade 5, is fixedly connected to the piezoelectric bin 7, and is used for transmitting the mechanical energy from the first fan blade 1 to the second fan blade 5; the second fan blade 5 is connected with the shaft element unit and is used for transmitting the mechanical energy to the piezoelectric ceramic piece 6; the piezoelectric ceramic piece 6 is connected with the piezoelectric bin 7 and used for receiving the mechanical energy, generating vibration energy based on the mechanical energy and transmitting the vibration energy to the piezoelectric bin 7; and the piezoelectric bin 7 is used for converting the vibration energy into electric energy so as to complete wind energy capture power generation.
Specifically, the at least one first fan blade 1 and the at least one second fan blade 5 are preferably provided in 3 numbers. When the number of the first fan blade 1 and the second fan blade 5 is set to 3, it is preferably set to be uniformly fixedly connected to the shaft unit as shown in fig. 1.
Specifically, the piezoelectric ceramic plates 6 are uniformly and fixedly connected to the inner wall of the piezoelectric chamber 7, the piezoelectric chamber 7 is preferably configured to be annular, and the piezoelectric ceramic plates 6 are preferably configured to be five or more.
It should be noted that the first fan blade 1 is preferably set to be in a darrieus fan blade form, the second fan blade 5 is set on one side of the shaft unit close to the piezoelectric ceramic plate, and the first fan blade 1 is set on the outer side of the shaft unit away from the piezoelectric ceramic plate.
Further, the shaft unit is preferably disposed at the center of the piezoelectric chamber 7, and it should be noted that the shaft unit may be disposed at any position of the piezoelectric chamber 7, but it should be ensured that at least one piezoelectric ceramic plate 6 contacts the second fan blade 5 when the shaft unit rotates.
Further, the working flow of the wind energy capture power generation device based on the piezoelectric effect provided in the embodiment of the present invention is as follows:
the wind energy capture power generation device based on the piezoelectric effect is characterized in that the first fan blade 1 rotates under the driving of wind energy, the second fan blade 5 is driven by the shaft unit to strike the piezoelectric ceramic plates 6 which are uniformly distributed on the piezoelectric bin 7 at a certain frequency, and the piezoelectric ceramic plates 6 vibrate at a certain frequency under the striking of the second fan blade 5 to generate deformation, so that the piezoelectric bin 7 generates electric energy to complete wind energy capture power generation.
It should be noted that the wind energy capture power generation device based on the piezoelectric effect in the embodiment of the present invention is suitable for a low wind speed and miniature power utilization place. The piezoelectric material in the embodiment of the present invention is a piezoelectric ceramic sheet 6, which is a high-energy and high-density piezoelectric material.
According to the wind energy capture power generation device based on the piezoelectric effect, the fan blades and the piezoelectric ceramic plates 6 are arranged, so that conversion of wind energy, mechanical energy, elastic potential energy and electric energy can be realized, technical support is provided for a small wind driven generator, a theoretical basis is provided for breeze grid-connected power generation, and the problems of difficulty in electric energy supply and energy source cleanness of small power utilization places in remote areas can be solved.
Based on the above embodiment, referring to fig. 1 and fig. 2, the shaft unit includes a low speed shaft 2, a speed increasing member 3, and a high speed shaft 4; the piezoelectric bin 7 comprises a first side plate and a second side plate, the high-speed shaft 4 is connected with the middle parts of the first side plate and the second side plate through bearings, the speed increasing piece 3 is fixedly connected with a threaded hole in the middle part of the first side plate through a bolt, and the low-speed shaft 2 is connected with the speed increasing piece 3; the low-speed shaft 2 is fixedly connected with the at least one first fan blade 1 through a key, and is used for transmitting the mechanical energy from the first fan blade 1 to the speed-increasing part 3; the speed increasing piece 3 is used for amplifying the mechanical energy; the high-speed shaft 4 is fixedly connected with the at least one second fan blade 5 through a key, and is used for transmitting the amplified mechanical energy to the second fan blade 5.
Specifically, the high-speed shaft 4 is connected to the middle portions of the first side plate and the second side plate via bearings, and rotational resistance can be reduced.
Further, the working flow of the wind energy capture power generation device based on the piezoelectric effect provided in the embodiment of the present invention is as follows:
the wind energy capture power generation device based on the piezoelectric effect drives the low-speed shaft 2 to rotate under the driving of wind energy, so that the first fan blade 1 rotates, the rotating speed is increased through the speed increasing device, the high-speed shaft 4 is driven to rotate, the high-speed shaft 4 drives the second fan blade 5 to strike the piezoelectric ceramic plates 6 which are uniformly distributed on the piezoelectric bin 7 at a certain frequency, the piezoelectric ceramic plates 6 vibrate at a certain frequency under the striking of the second fan blade 5 to generate deformation, the piezoelectric bin 7 generates electric energy, and the wind energy capture power generation is completed.
Specifically, the low-speed shaft 2 is fixedly connected with the at least one first fan blade 1 through a key, so that no relative movement between the first fan blade 1 and the low-speed shaft 2 is ensured, and the loss of wind energy is reduced. The high-speed shaft 4 is fixedly connected with the at least one second fan blade 5 through a key so as to ensure the high-speed rotation of the second fan blade 5. The speed-increasing piece 3 is fixedly connected with the threaded hole in the middle of the first side plate through a bolt, and the speed-increasing piece 3 is ensured to be stably fixed on the piezoelectric bin 7.
Based on the above embodiments, the embodiment also refers to fig. 1 and fig. 2, and further includes a supporting seat 8 and a base 10; the piezoelectric bin 7 is fixedly connected to the supporting seat 8; the supporting seat 8 is fixedly connected to the base 10 through the slotted hole of the base 10.
Specifically, the support base 8 is used for supporting the cabin body of the piezoelectric cabin 7, and the base 10 is used for supporting the support base 8 and providing stable support for the wind energy capture device.
Specifically, the supporting seat 8 is configured as a semi-ring shape, is contained outside the lower portion of the annular piezoelectric chamber 7 and is fixedly connected with the piezoelectric chamber 7, and a rectangular supporting plate is arranged at the lowest position of the semi-ring shape and is fixedly connected to the base 10 through a slot hole of the base 10, it should be noted that the rectangular supporting plate is preferably fixedly connected to the center of the base 10 to keep balance.
Further, the base 10 is preferably provided in a truncated cone shape.
According to the wind energy capture power generation device based on the piezoelectric effect, other structures can be supported by arranging the supporting seat 8 and the base 10, so that a stable working platform is provided.
Based on the above embodiments, referring to fig. 1 and fig. 2, in this embodiment, two sides of the base 10 are respectively welded with a rectangular plate including a first through hole, and the first through hole is used for installing an anchor bolt.
According to the wind energy capture power generation device based on the piezoelectric effect, the rectangular plate comprising the first through hole and the foundation bolt are arranged, so that the stability of the wind energy capture power generation device can be improved.
Based on the above embodiments, the present embodiment also refers to fig. 1 and fig. 2, and further includes an electrical box 9; the electric box 9 is electrically connected with the piezoelectric bin 7 and used for collecting and storing the electric energy.
Based on the above embodiments, referring to fig. 1 and fig. 2, in this embodiment, a rectangular plate including a second through hole is welded to each of two sides of the electrical box 9, and the second through hole is used for fixing a mounting bolt to the base 10.
According to the wind energy capture power generation device based on the piezoelectric effect, the rectangular plate comprising the second through hole is arranged, so that the electric box 9 can be placed on the base 10 more stably.
Based on the above embodiments, referring to fig. 1 and fig. 2, in this embodiment, the piezoelectric ceramic plate 6 is fixedly connected to the piezoelectric chamber 7 through a hidden groove on the inner wall of the piezoelectric chamber 7.
Specifically, the fixing device is installed at the notch of the blind groove to ensure that the piezoelectric ceramic piece 6 is stably connected with the piezoelectric bin 7 during working.
Based on the above embodiments, referring to fig. 1 and fig. 2, the first fan blade 1 is a darrieus fan blade.
Specifically, the darrieus fan is a lift type fan, and compared with other vertical axis wind turbines, the darrieus fan is higher in wind energy utilization coefficient. The darrieus fan blades are classified into different types, fig. 3 is a diagram of the type of the darrieus fan blade in the embodiment of the present invention, and please refer to fig. 3 for the darrieus fan blade in the embodiment.
According to the wind energy capture power generation device based on the piezoelectric effect, the first fan blade 1 is set to be the Dairy fan blade, so that wind energy can be captured to the maximum extent.
Based on the above embodiments, referring to fig. 1 and fig. 2, the electric box 9 includes an energy collecting circuit, a rectifying and voltage stabilizing module, and a storage battery module.
Specifically, the piezoelectric ceramic plate 6 and the piezoelectric chamber 7 transmit electric energy to an energy collecting circuit, a rectifying and voltage stabilizing module and a storage battery module in the electric box 9 through high-temperature wires, so as to collect and store the electric energy.
Based on the above embodiments, referring to fig. 1 and fig. 2, the piezoelectric chamber 7 is annular; the base 10 is in a shape of a circular truncated cone.
As a preferred embodiment, the working flow of the wind energy capture power generation device based on the piezoelectric effect provided in the embodiment of the present invention is as follows:
the device is placed in a place with a roof and a tuyere and the like with abundant wind energy, the device is fixed by rectangular fixing pieces welded on the left side and the right side of a circular base 10, wind energy drives a first fan blade 1 which is similar to a Dairy appearance design to rotate, the first fan blade 1 transmits the rotation to a speed-increasing piece 3 through a low-speed shaft 2, the speed-increasing piece 3 transmits the rotating speed after speed increasing to a high-speed shaft 4, the high-speed shaft 4 drives a second fan blade 5 to rotate, the second fan blade 5 rotates and strikes a piezoelectric ceramic piece 6 fixed on a piezoelectric bin 7, the piezoelectric ceramic piece 6 vibrates at a certain frequency under the striking of the second fan blade 5 to generate deformation, the wind energy is converted into electric energy in the piezoelectric bin 7 and is output into an electric box 9 through a high-temperature lead, an energy collecting circuit and a current-stabilizing and voltage-stabilizing module in the electric box 9 convert the electric energy, and the converted electric energy is.
According to the wind energy capture power generation device based on the piezoelectric effect, the conversion of wind energy, mechanical energy, elastic potential energy and electric energy can be realized by arranging the fan blades and the piezoelectric ceramic plates 6, the design ideas of cleanness, environmental protection and high efficiency are embodied, the technical support is provided for the small wind driven generator, the theoretical basis is provided for breeze grid-connected power generation, and the problems of difficult electric energy supply and clean energy of small power utilization places in remote areas can be solved. By providing the support base 8 and the base 10, other structures can be supported to provide a stable work platform. Through the rectangular plate that sets up including first through-hole to and rag bolt, can improve wind energy and catch power generation facility's stability. By providing the rectangular plate including the second through hole, the electric box 9 can be placed on the base 10 more stably. Wind energy can be captured to the greatest extent by setting the first fan blade 1 to be a darrieus fan blade. The wind energy capture power generation device based on the piezoelectric effect has the advantages of environmental protection, high conversion rate, convenience in installation, small heat production quantity and the like. The method provides a new solution for solving the power supply problem of small-sized power utilization places and provides reference for small-sized breeze power generation. The wind-driven generator can generate electricity under the condition of breeze and can be used as a power generation device of a standby power supply, the power generation device can generate electricity and store energy when in normal power supply, and the device can supply power to the outside when in power failure.
Finally, the method of the present invention is only a preferred embodiment and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A wind energy capture power generation device based on a piezoelectric effect is characterized by comprising at least one first fan blade, a shaft element unit, at least one second fan blade, at least one piezoelectric ceramic piece and a piezoelectric bin;
the first fan blade is connected with the shaft element unit and used for receiving and absorbing wind power and converting the wind power into mechanical energy;
the shaft element unit is sequentially connected with the first fan blade and the second fan blade, is fixedly connected with the piezoelectric bin, and is used for transmitting the mechanical energy from the first fan blade to the second fan blade;
the second fan blade is connected with the shaft element unit and used for transmitting the mechanical energy to the piezoelectric ceramic piece;
the piezoelectric ceramic piece is connected with the piezoelectric bin and used for receiving the mechanical energy, generating vibration energy based on the mechanical energy and transmitting the vibration energy to the piezoelectric bin;
and the piezoelectric bin is used for converting the vibration energy into electric energy so as to complete wind energy capture power generation.
2. The power generation apparatus according to claim 1, wherein the shaft unit includes a low speed shaft, a speed-up member, and a high speed shaft;
the piezoelectric bin comprises a first side plate and a second side plate, the high-speed shaft is connected with the middle parts of the first side plate and the second side plate through bearings, the speed increasing piece is fixedly connected with a threaded hole in the middle part of the first side plate through a bolt, and the low-speed shaft is connected with the speed increasing piece;
the low-speed shaft is fixedly connected with the at least one first fan blade through a key and is used for transmitting the mechanical energy from the first fan blade to the speed-increasing piece;
the speed increasing piece is used for amplifying the mechanical energy;
the high-speed shaft is fixedly connected with the at least one second fan blade through a key and is used for transmitting the amplified mechanical energy to the second fan blade.
3. The power generation apparatus of claim 1, further comprising a support base and a base; the piezoelectric bin is fixedly connected to the supporting seat; the supporting seat is fixedly connected to the base through the slotted hole of the base.
4. The power generation apparatus according to claim 3, wherein a rectangular plate including a first through hole for installing an anchor bolt is welded to each of both sides of the base.
5. The power generation apparatus of claim 3, further comprising an electrical box; the electronic box is electrically connected with the piezoelectric bin and used for collecting and storing the electric energy.
6. The power generation device of claim 5, wherein a rectangular plate comprising a second through hole is welded on each of two sides of the electrical box, and the second through holes are used for fixedly connecting mounting bolts with the base.
7. The power generation device of claim 1, wherein the piezoelectric ceramic plate is fixedly connected with the piezoelectric bin through a hidden groove on the inner wall of the piezoelectric bin.
8. The power generation apparatus of claim 1, wherein the first fan blade is a darrieus fan blade.
9. The power generation device according to claim 5, wherein the inside of the electrical box includes an energy collection circuit, a rectifying and voltage stabilizing module, and a storage battery module.
10. The power generation apparatus of claim 3, wherein the piezoelectric capsule is annular; the base is in a round table shape.
CN201810150403.2A 2018-02-13 2018-02-13 Wind energy capture power generator based on piezoelectric effect Pending CN108134539A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114738700A (en) * 2022-04-29 2022-07-12 安徽工程大学 Street lamp based on vortex-induced vibration and rotation power generation

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US20100052324A1 (en) * 2005-10-18 2010-03-04 Board Of Regents, The University Of Texas System Piezoelectric windmill apparatus
KR20110116917A (en) * 2010-04-20 2011-10-26 이진용 Generator using piezoelectric plement
CN102230451A (en) * 2011-05-13 2011-11-02 张双元 Technology for wind power generation and hydropower generation by using throwing roller as generator and floater
CN202798524U (en) * 2012-04-01 2013-03-13 苏州市职业大学 Small-sized pneumatic piezoelectric generator
CN105673339A (en) * 2016-01-27 2016-06-15 国家电网公司 Energy harvesting device
CN107395061A (en) * 2017-08-17 2017-11-24 浙江师范大学 A kind of charming appearance and behaviour piezoelectric harvester

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Publication number Priority date Publication date Assignee Title
US20100052324A1 (en) * 2005-10-18 2010-03-04 Board Of Regents, The University Of Texas System Piezoelectric windmill apparatus
CN101510740A (en) * 2009-04-02 2009-08-19 吴速 System for driving piezoelectric material to generate electricity by utilizing wind energy
KR20110116917A (en) * 2010-04-20 2011-10-26 이진용 Generator using piezoelectric plement
CN102230451A (en) * 2011-05-13 2011-11-02 张双元 Technology for wind power generation and hydropower generation by using throwing roller as generator and floater
CN202798524U (en) * 2012-04-01 2013-03-13 苏州市职业大学 Small-sized pneumatic piezoelectric generator
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114738700A (en) * 2022-04-29 2022-07-12 安徽工程大学 Street lamp based on vortex-induced vibration and rotation power generation
CN114738700B (en) * 2022-04-29 2023-05-23 安徽工程大学 Street lamp based on vortex-induced vibration and rotation power generation

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