CN102723894A - Rotary piezoelectric generation device - Google Patents
Rotary piezoelectric generation device Download PDFInfo
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- CN102723894A CN102723894A CN2012101688804A CN201210168880A CN102723894A CN 102723894 A CN102723894 A CN 102723894A CN 2012101688804 A CN2012101688804 A CN 2012101688804A CN 201210168880 A CN201210168880 A CN 201210168880A CN 102723894 A CN102723894 A CN 102723894A
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Abstract
The invention discloses a rotary piezoelectric generation device, which comprises a rotary shaft, a front excitation wheel, a rear excitation wheel and a piezoelectric twin-crystal beam array, wherein the piezoelectric twin-crystal beam array is arranged between the front excitation wheel and the rear excitation wheel; the front excitation wheel and the rear excitation wheel respectively comprise a wheel disk and excitation permanent magnet blocks; the excitation permanent magnet blocks of the front excitation wheel and the rear excitation wheel are staggered spatially; the piezoelectric twin-crystal beam array comprises hubs and piezoelectric twin-crystal beams; each piezoelectric twin-crystal beam comprises a cantilever beam; a piezoelectric ceramic wafer and a piezoelectric beam permanent magnet block are respectively arranged on a beam body of each cantilever beam; and permanent magnet repulsive force can be respectively formed between the piezoelectric beam permanent magnet blocks and the excitation permanent magnet blocks of the front excitation wheel and the rear excitation wheel. Therefore, by rotation of the rotary shaft, the two excitation wheels alternately apply repulsive force to the piezoelectric twin-crystal beams of the piezoelectric twin-crystal beam array, high frequency is generated, and high forced deformation is caused, so the rotation energy of the rotary shaft is effectively utilized.
Description
Technical field
The present invention is a kind of rotary piezoelectric TRT, belongs to little energy technology field, is particularly suitable for collecting the rotary machine ability that changes in the environment.
Background technology
Utilizing various vibrational energies such as natural wind energy and water ability to generate electricity, is various micro-systems power supplies, meets the development trend of current energy-saving and environmental protection, low-carbon (LC).In various energy acquisition modes, use piezoelectric to carry out low frequency, change at random characteristics that collection of energy is more suitable for the ambient vibration ability.
The piezoelectric cantilever power generation performance is directly proportional with the strain and the vibration frequency of piezoelectric ceramic.The Priya of the U.S. has invented a novel windmill type wind energy absorption plant (US2010/0052324A1).It comprises fan, cam and the energy harvester that is made up of 12 twin lamellas.Wind drives fan and rotates, and fan is stirred each twin lamella vibration with cam, thereby obtains energy.The resonance frequency of piezoelectric bimorph is 6Hz, and when selecting suitable wind speed, peak power output is 10.2mW.But there is following shortcoming in this scheme: 1, use the way of contact to transmit energy, cause mechanical power loss and reduce useful life.When 2, wind speed was low, cam and twin lamella can not break away from, and can not generate electricity this moment.Rastegar and Murry propose to use permanent magnetism power to transmit noncontact to impact, and the drawback of having avoided Mechanical Contact to bring has improved the response frequency of piezoelectric cantilever to the low frequency exciting, but twin lamella is when receiving the noncontact impact force action, and response amplitude is constantly decayed.Chu Jinkui proposes twin lamella is placed under the permanent magnetism power, makes it be in the bistable state energy state, with at random, improve generating capacity (CN102332843) under the multifrequency vibration environment.But the extension direction of Tongliang County of this device twin lamella array is along the axial setting of rotating shaft; Cause permanent magnet vertical with its direction of vibration to the impulsive force of twin lamella; The energy that axle rotates can not be converted into the piezoelectric bimorph vibration of beam effectively can; Reduced force transmission effect, and systematic comparison is huge; This device adopts the version of piezoelectric bimorph-exciting wheel-piezoelectric bimorph simultaneously, only possesses an exciting wheel, has reduced the efficient conversion of rotating shaft.
Summary of the invention
The present invention is directed to the deficiency of prior art; A kind of rotary piezoelectric TRT is provided; This rotary piezoelectric device adopts the sandwich structure of exciting wheel-piezoelectric bimorph beam array-exciting wheel, and the excitation permanent magnetic iron block on two exciting wheels spatially is crisscross arranged, and makes the present invention under the rotation of rotating shaft drives; Two exciting wheels alternately produce repulsion to the piezoelectric bimorph beam of piezoelectric bimorph beam array; Make it produce upper frequency and bigger forced deformation, thereby be effectively used to the rotational energy of rotating shaft more, solved the lower problem of energy conversion efficiency in this documents.
For realizing above technical purpose, the present invention will take following technical scheme:
A kind of rotary piezoelectric TRT; Comprise rotating shaft and be installed in exciting wheel, the piezoelectric bimorph beam array on the rotating shaft respectively; Said exciting wheel comprises preceding exciting wheel, back exciting wheel; Preceding exciting wheel, back exciting wheel all are rigidly connected with rotating shaft, and the piezoelectric bimorph beam array places between preceding exciting wheel and the back exciting wheel; Exciting wheel includes wheel disc and a plurality of excitation permanent magnetic iron block that circumferentially is distributed on the wheel disc card with the back exciting wheel before said, and the excitation permanent magnetic iron block of the excitation permanent magnetic iron block of preceding exciting wheel and back exciting wheel spatially is crisscross arranged; A plurality of piezoelectric bimorph beams that said piezoelectric bimorph beam array comprises wheel hub and circumferentially is distributed on the wheel hub cylindrical; Wheel hub and rotating shaft are connected; Each piezoelectric bimorph beam includes cantilever beam; One end of this cantilever beam is fixedly connected with wheel hub, and other end cantilever is provided with, and piezoelectric ceramic piece and piezoelectric beam permanent magnetic iron block are installed respectively on the beam body of cantilever beam; This piezoelectric beam permanent magnetic iron block can be respectively and the excitation permanent magnetic iron block of preceding exciting wheel, back exciting wheel between form the permanent magnetism repulsive force, said piezoelectric ceramic piece is provided with the lead of drawing that is connected with load.
The cantilever end extension direction of said cantilever beam and rotating shaft axially perpendicular.
Said piezoelectric beam permanent magnetic iron block is one, and two magnetic poles of this piezoelectric beam permanent magnetic iron block all expose behind the cantilever beam respectively towards preceding exciting wheel and back exciting wheel setting.
Said piezoelectric beam permanent magnetic iron block is two, be installed in respectively on two sides of cantilever beam beam body, and one of them magnetic pole of each piezoelectric beam permanent magnetic iron block is all towards an exciting wheel setting, and this magnetic pole is with the pole polarity in the face of permanent magnetic iron block on the exciting wheel is identical mutually.
The cantilever end setting of the contiguous cantilever beam of said piezoelectric beam permanent magnetic iron block, and piezoelectric ceramic piece is installed between the stiff end of piezoelectric beam permanent magnetic iron block and cantilever beam.
According to above technical scheme, can realize following beneficial effect:
1, rotary piezoelectric TRT according to the invention adopts the sandwich structure of exciting wheel-piezoelectric bimorph beam array-exciting wheel; And the excitation permanent magnetic iron block on two exciting wheels spatially is crisscross arranged; Therefore; US2010/0052324A1 compares with documents, and the present invention utilizes noncontact permanent magnetism power transfer function power, has avoided mechanical shock to cause energy loss and life-span to reduce defective; And compare with documents CN102332843; The present invention rotatablely moves through rotating shaft; Drive two exciting wheels and alternately the piezoelectric bimorph beam of piezoelectric bimorph beam array is produced repulsion; Make it produce upper frequency and bigger forced deformation, thereby be effectively used to the rotational energy of rotating shaft more, solved the lower problem of energy conversion efficiency in this documents; In addition, even this version can make the present invention under the rotating shaft low speed rotation, also can generate electricity, overcome the shortcoming of prior art.
2, the present invention is with the radial extension of cantilever beam cantilever end along rotating shaft; Be cantilever end extension direction and rotating shaft axially perpendicular of cantilever beam; Therefore, CN102332843 compares with documents, makes the permanent magnet expulsive force direction identical with the vibration of beam direction; Further improved the efficient of rotational energy, avoided huge structural system effectively to the beam vibration power conversion.
3, utilize piezoelectric effect, harvest energy is converted into electric energy from the motion of air or other fluids, is a kind of small-size wind power-generating or hydroelectric installation, can be the power supply of outdoor wireless sensing net node.
Description of drawings
Fig. 1 is the structural representation of rotary piezoelectric TRT according to the invention;
Fig. 2 is the structural representation of exciting wheel among Fig. 1;
Fig. 3 is the structural representation of piezoelectric bimorph beam array among Fig. 1;
Fig. 4 is the structural representation of piezoelectric bimorph beam among Fig. 3;
Among Fig. 1 to Fig. 4: preceding exciting wheel 1; Back exciting wheel 2; Piezoelectric bimorph beam array 3; Rotating shaft 4; Bearing 5; Excitation permanent magnetic iron block 6; Cantilever beam 7; Piezoelectric ceramic piece 8; Draw lead 9 and 10; Load 11.
Embodiment
Accompanying drawing discloses the structural representation of preferred embodiment involved in the present invention without limitation; Below will combine accompanying drawing that technical scheme of the present invention at length is described.
As shown in Figure 1; Rotary piezoelectric TRT of the present invention; Comprise rotating shaft and be installed in preceding exciting wheel, piezoelectric bimorph beam array and the back exciting wheel on the rotating shaft respectively; Before exciting wheel 1 and back exciting wheel 2 with the piezoelectric bimorph beam array 3 formation sandwich type structural that is clipped in the middle, certain interval is arranged between the three; Preceding exciting wheel 1 all is rigidly connected with rotating shaft 4 with back exciting wheel 2, and piezoelectric bimorph beam array 3 is connected with rotating shaft through bearing 5.When rotating shaft following in the driving of external force such as wind energy; When exciting wheel 1 is with back exciting wheel 2 rotation synchronously before driving; The noncontact permanent magnetism repulsive force that exists between the noncontact permanent magnetism repulsive force that exists between preceding exciting wheel 1 and the piezoelectric bimorph beam array 3, back exciting wheel 2 and the piezoelectric bimorph beam array 3 all can act on the piezoelectric bimorph beam of piezoelectric bimorph beam array 3; Make the piezoelectric bimorph beam produce forced deformation, thereby produce electric energy.
As shown in Figure 2; Preceding exciting wheel of the present invention includes wheel disc with the back exciting wheel and several circumferentially are distributed on the excitation permanent magnetic iron block on the wheel disc card; This excitation permanent magnetic iron block generally cylindrical of contiguous wheel disc card evenly distributes all around; And the excitation permanent magnetic iron block of preceding exciting wheel spatially is crisscross arranged with the excitation permanent magnetic iron block of back exciting wheel; Guarantee that under the driving of rotating shaft the noncontact permanent magnetism repulsive force that exists between the noncontact permanent magnetism repulsive force that exists between preceding exciting wheel and the piezoelectric bimorph beam array 3, back exciting wheel 2 and the piezoelectric bimorph beam array 3 alternately acts on the piezoelectric bimorph beam of piezoelectric bimorph beam array 3.
Like Fig. 3, shown in Figure 4; A plurality of piezoelectric bimorph beams that piezoelectric bimorph beam array according to the invention comprises wheel hub and circumferentially is distributed on the wheel hub cylindrical, wheel hub and rotating shaft are connected, and each piezoelectric bimorph beam includes cantilever beam; One end of this cantilever beam is fixedly connected with wheel hub; Other end cantilever is provided with, and the cantilever end extension direction of cantilever beam and rotating shaft is axially perpendicular, makes the permanent magnet expulsive force direction identical with the vibration of beam direction; Improved the efficient of rotational energy, reduced system bulk simultaneously to the beam vibration power conversion; Piezoelectric ceramic piece and piezoelectric beam permanent magnetic iron block are installed respectively on the beam body of said cantilever beam; This piezoelectric beam permanent magnetic iron block can be respectively and the excitation permanent magnetic iron block of preceding exciting wheel, back exciting wheel between form the permanent magnetism repulsive force, said piezoelectric ceramic piece is provided with the lead of drawing that is connected with load; Load can be light-emitting diode, wireless senser, current rectifying and wave filtering circuit, storage battery, electric capacity etc.; The piezoelectric beam permanent magnetic iron block can be one, also can be two; When the piezoelectric beam permanent magnetic iron block was one, two magnetic poles of this piezoelectric beam permanent magnetic iron block all exposed behind the cantilever beam respectively towards preceding exciting wheel and back exciting wheel setting; When the piezoelectric beam permanent magnetic iron block is two; Be installed in respectively on two sides of cantilever beam beam body; And one of them magnetic pole of each piezoelectric beam permanent magnetic iron block is all towards an exciting wheel setting, and this magnetic pole is with the pole polarity in the face of permanent magnetic iron block on the exciting wheel is identical mutually.In addition, the cantilever end setting of the contiguous cantilever beam of piezoelectric beam permanent magnetic iron block according to the invention, and piezoelectric ceramic piece is installed between the stiff end of piezoelectric beam permanent magnetic iron block and cantilever beam.
Because change of wind velocity wider range, can the physical dimension of piezoelectric bimorph beam be designed to inconsistently, to every kind of wind speed the optimum piezoelectric bimorph beam of power generation performance that is complementary is arranged all, can under multiple wind speed, can both obtain the optimal power generation effect thus.
Claims (5)
1. rotary piezoelectric TRT; Comprise rotating shaft and be installed in exciting wheel, the piezoelectric bimorph beam array on the rotating shaft respectively; It is characterized in that: said exciting wheel comprises preceding exciting wheel, back exciting wheel; Preceding exciting wheel, back exciting wheel all are rigidly connected with rotating shaft, and the piezoelectric bimorph beam array places between preceding exciting wheel and the back exciting wheel; Exciting wheel includes wheel disc and a plurality of excitation permanent magnetic iron block that circumferentially is distributed on the wheel disc card with the back exciting wheel before said, and the excitation permanent magnetic iron block of the excitation permanent magnetic iron block of preceding exciting wheel and back exciting wheel spatially is crisscross arranged; A plurality of piezoelectric bimorph beams that said piezoelectric bimorph beam array comprises wheel hub and circumferentially is distributed on the wheel hub cylindrical; Wheel hub and rotating shaft are connected; Each piezoelectric bimorph beam includes cantilever beam; One end of this cantilever beam is fixedly connected with wheel hub, and other end cantilever is provided with, and piezoelectric ceramic piece and piezoelectric beam permanent magnetic iron block are installed respectively on the beam body of cantilever beam; This piezoelectric beam permanent magnetic iron block can be respectively and the excitation permanent magnetic iron block of preceding exciting wheel, back exciting wheel between form the permanent magnetism repulsive force, said piezoelectric ceramic piece is provided with the lead of drawing that is connected with load.
2. according to the said rotary piezoelectric TRT of claim 1, it is characterized in that: the cantilever end extension direction of said cantilever beam and rotating shaft axially perpendicular.
3. according to claim 1 or 2 said rotary piezoelectric TRTs; It is characterized in that: said piezoelectric beam permanent magnetic iron block is one; Two magnetic poles of this piezoelectric beam permanent magnetic iron block all expose behind the cantilever beam respectively towards preceding exciting wheel and back exciting wheel setting, and the pole polarity of the excitation permanent magnetic iron block on piezoelectric beam permanent magnetic iron block and the wheel disc that it is faced mutually is identical.
4. according to claim 1 or 2 said rotary piezoelectric TRTs; It is characterized in that: said piezoelectric beam permanent magnetic iron block is two; Be installed in respectively on two sides of cantilever beam beam body; And one of them magnetic pole of each piezoelectric beam permanent magnetic iron block is all towards an exciting wheel setting, and this magnetic pole is with the pole polarity in the face of permanent magnetic iron block on the exciting wheel is identical mutually.
5. according to claim 1 or 2 said rotary piezoelectric TRTs, it is characterized in that: the cantilever end setting of the contiguous cantilever beam of said piezoelectric beam permanent magnetic iron block, and piezoelectric ceramic piece is installed between the stiff end of piezoelectric beam permanent magnetic iron block and cantilever beam.
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| CN201210168880.4A CN102723894B (en) | 2012-05-28 | 2012-05-28 | Rotary piezoelectric generation device |
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| CN201210168880.4A CN102723894B (en) | 2012-05-28 | 2012-05-28 | Rotary piezoelectric generation device |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102937137A (en) * | 2012-11-20 | 2013-02-20 | 浙江大学 | Piezoelectric power generation rolling bearing unit |
| CN103248269A (en) * | 2013-05-31 | 2013-08-14 | 浙江师范大学 | Wheel-type piezoelectric beam generator based on clamping limit |
| CN103346252A (en) * | 2013-07-05 | 2013-10-09 | 重庆大学 | MEMS vibration energy collector based on PZT piezoelectric beam array |
| CN103427467A (en) * | 2013-08-15 | 2013-12-04 | 大连理工大学 | Rotary piezoelectric power generation charger driven by wind force |
| CN103580537A (en) * | 2013-11-06 | 2014-02-12 | 江苏联能电子技术有限公司 | Stepped piezoelectric generator |
| CN103762892A (en) * | 2014-01-17 | 2014-04-30 | 哈尔滨工程大学 | Phononic crystal power generating device based on torsional vibration band gaps |
| ITTO20130652A1 (en) * | 2013-07-31 | 2015-02-01 | Milano Politecnico | PIEZOELECTRIC TRANSDUCER FOR AN ENERGY COLLECTION SYSTEM AND METHOD FOR ENERGY COLLECTION BY MEANS OF A PIEZOELECTRIC TRANSDUCER |
| CN104377995A (en) * | 2014-11-25 | 2015-02-25 | 哈尔滨工业大学 | Rotating wheel non-contact excitation type fluid kinetic energy conversion device |
| CN105006993A (en) * | 2015-07-24 | 2015-10-28 | 哈尔滨工业大学 | Vertical shaft rotary excitation type wind energy capture device |
| CN105634205A (en) * | 2016-03-25 | 2016-06-01 | 吉林大学 | Micro piezoelectric-electromagnetic composite power generation device |
| CN106856382A (en) * | 2017-01-12 | 2017-06-16 | 合肥工业大学 | A kind of rotatable movement and the piezoelectric energy collecting device being axially moved |
| CN106885989A (en) * | 2017-03-09 | 2017-06-23 | 吉林大学 | The mode self adaptation prisoner for being applied to intelligent tire can device experiment platform |
| CN107482951A (en) * | 2017-07-31 | 2017-12-15 | 陕西科技大学 | A kind of portable piezoelectric ceramics TRT of bicycle and its system |
| CN108462403A (en) * | 2018-03-13 | 2018-08-28 | 吉林大学 | A kind of double working modes wideband bistable state piezoelectric generating device |
| CN108696184A (en) * | 2018-06-27 | 2018-10-23 | 长江大学 | U-shaped beam element piezoelectric generator |
| CN109282891A (en) * | 2018-08-13 | 2019-01-29 | 西安陆海地球物理科技有限公司 | A kind of piezoelectric chip |
| CN109340029A (en) * | 2018-11-02 | 2019-02-15 | 长江大学 | Multistage rigidity non-uniform beam generator and wave-activated generator |
| CN109639178A (en) * | 2019-01-11 | 2019-04-16 | 长春工业大学 | A kind of gyromagnet Exciting-simulator system piezoelectric generating device |
| CN110034704A (en) * | 2019-05-20 | 2019-07-19 | 山东理工大学 | A kind of non-linear piezoelectric generating device of wind-force array magnetic force |
| CN111064340A (en) * | 2020-01-15 | 2020-04-24 | 山东理工大学 | Wind-induced vibration electromagnetic power generation device based on full wind direction environment excitation |
| CN112994521A (en) * | 2021-03-19 | 2021-06-18 | 中国矿业大学 | Energy collecting device and self-powered type elevator roller state monitoring device |
| CN113054870A (en) * | 2021-03-29 | 2021-06-29 | 厦门大学深圳研究院 | Combined type rotary energy collector |
| CN113676079A (en) * | 2021-07-30 | 2021-11-19 | 浙江大学 | Dual-rotor micro-flow energy capturing power generation device based on piezoelectric effect |
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| CN102937137B (en) * | 2012-11-20 | 2015-01-14 | 浙江大学 | Piezoelectric power generation rolling bearing unit |
| CN102937137A (en) * | 2012-11-20 | 2013-02-20 | 浙江大学 | Piezoelectric power generation rolling bearing unit |
| CN103248269A (en) * | 2013-05-31 | 2013-08-14 | 浙江师范大学 | Wheel-type piezoelectric beam generator based on clamping limit |
| CN103248269B (en) * | 2013-05-31 | 2015-04-29 | 浙江师范大学 | Wheel-type piezoelectric beam generator based on clamping limit |
| CN103346252A (en) * | 2013-07-05 | 2013-10-09 | 重庆大学 | MEMS vibration energy collector based on PZT piezoelectric beam array |
| US9941821B2 (en) | 2013-07-31 | 2018-04-10 | Stmicroelectronics S.R.L. | Piezoelectric transducer for an energy-harvesting system |
| US10897215B2 (en) | 2013-07-31 | 2021-01-19 | Stmicroelectronics S.R.L. | Piezoelectric transducer for an energy-harvesting system |
| ITTO20130652A1 (en) * | 2013-07-31 | 2015-02-01 | Milano Politecnico | PIEZOELECTRIC TRANSDUCER FOR AN ENERGY COLLECTION SYSTEM AND METHOD FOR ENERGY COLLECTION BY MEANS OF A PIEZOELECTRIC TRANSDUCER |
| CN103427467A (en) * | 2013-08-15 | 2013-12-04 | 大连理工大学 | Rotary piezoelectric power generation charger driven by wind force |
| CN103580537A (en) * | 2013-11-06 | 2014-02-12 | 江苏联能电子技术有限公司 | Stepped piezoelectric generator |
| CN103580537B (en) * | 2013-11-06 | 2016-03-30 | 江苏联能电子技术有限公司 | A kind of staged piezoelectric generator |
| CN103762892A (en) * | 2014-01-17 | 2014-04-30 | 哈尔滨工程大学 | Phononic crystal power generating device based on torsional vibration band gaps |
| CN103762892B (en) * | 2014-01-17 | 2016-01-27 | 哈尔滨工程大学 | A kind of phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on torsional oscillation band gap |
| CN104377995B (en) * | 2014-11-25 | 2016-08-17 | 哈尔滨工业大学 | Rotate wheel non-contact exciting formula fluid kenetic energy converting device |
| CN104377995A (en) * | 2014-11-25 | 2015-02-25 | 哈尔滨工业大学 | Rotating wheel non-contact excitation type fluid kinetic energy conversion device |
| CN105006993A (en) * | 2015-07-24 | 2015-10-28 | 哈尔滨工业大学 | Vertical shaft rotary excitation type wind energy capture device |
| CN105634205A (en) * | 2016-03-25 | 2016-06-01 | 吉林大学 | Micro piezoelectric-electromagnetic composite power generation device |
| CN106856382A (en) * | 2017-01-12 | 2017-06-16 | 合肥工业大学 | A kind of rotatable movement and the piezoelectric energy collecting device being axially moved |
| CN106885989A (en) * | 2017-03-09 | 2017-06-23 | 吉林大学 | The mode self adaptation prisoner for being applied to intelligent tire can device experiment platform |
| CN106885989B (en) * | 2017-03-09 | 2023-07-25 | 吉林大学 | Modal self-adaptive energy harvesting device test bed applied to intelligent tire |
| CN107482951A (en) * | 2017-07-31 | 2017-12-15 | 陕西科技大学 | A kind of portable piezoelectric ceramics TRT of bicycle and its system |
| CN108462403A (en) * | 2018-03-13 | 2018-08-28 | 吉林大学 | A kind of double working modes wideband bistable state piezoelectric generating device |
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| CN109282891B (en) * | 2018-08-13 | 2021-08-03 | 西安陆海地球物理科技有限公司 | Piezoelectric wafer |
| CN109282891A (en) * | 2018-08-13 | 2019-01-29 | 西安陆海地球物理科技有限公司 | A kind of piezoelectric chip |
| CN109340029A (en) * | 2018-11-02 | 2019-02-15 | 长江大学 | Multistage rigidity non-uniform beam generator and wave-activated generator |
| CN109340029B (en) * | 2018-11-02 | 2023-09-29 | 长江大学 | Multistage rigidity variable cross section beam generator and wave generator |
| CN109639178A (en) * | 2019-01-11 | 2019-04-16 | 长春工业大学 | A kind of gyromagnet Exciting-simulator system piezoelectric generating device |
| CN110034704A (en) * | 2019-05-20 | 2019-07-19 | 山东理工大学 | A kind of non-linear piezoelectric generating device of wind-force array magnetic force |
| CN111064340A (en) * | 2020-01-15 | 2020-04-24 | 山东理工大学 | Wind-induced vibration electromagnetic power generation device based on full wind direction environment excitation |
| CN111064340B (en) * | 2020-01-15 | 2022-04-19 | 山东理工大学 | Wind-induced vibration electromagnetic power generation device based on full wind direction environment excitation |
| CN112994521A (en) * | 2021-03-19 | 2021-06-18 | 中国矿业大学 | Energy collecting device and self-powered type elevator roller state monitoring device |
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| CN113054870A (en) * | 2021-03-29 | 2021-06-29 | 厦门大学深圳研究院 | Combined type rotary energy collector |
| CN113676079A (en) * | 2021-07-30 | 2021-11-19 | 浙江大学 | Dual-rotor micro-flow energy capturing power generation device based on piezoelectric effect |
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