CN112383244A - Spherical piezoelectric power generation device - Google Patents
Spherical piezoelectric power generation device Download PDFInfo
- Publication number
- CN112383244A CN112383244A CN202011303280.5A CN202011303280A CN112383244A CN 112383244 A CN112383244 A CN 112383244A CN 202011303280 A CN202011303280 A CN 202011303280A CN 112383244 A CN112383244 A CN 112383244A
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- Prior art keywords
- hemispherical shell
- spherical
- power generation
- piezoelectric power
- generation device
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- 238000010248 power generation Methods 0.000 title claims abstract description 27
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 claims 1
- 238000003756 stirring Methods 0.000 abstract description 3
- 230000008093 supporting effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
-
- 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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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention provides a spherical piezoelectric power generation device, which comprises an outer hemispherical shell 1 and an inner hemispherical shell 2, wherein the inner hemispherical shell 2 is fixed inside the outer hemispherical shell 1, the inner surface of the outer hemispherical shell 1 is provided with a plurality of cantilever beams 6, and piezoelectric sheets 61 are adhered to four surfaces of each cantilever beam 6; the outer surface of the inner hemispherical shell 2 is provided with a plurality of shifting pieces 5; when the posture of the underwater robot changes, the inner hemispherical shell 2 rotates, and the cantilever beam 6 is simultaneously stirred by the stirring sheet 5, so that the piezoelectric sheet 61 deforms along with the cantilever beam 6 to generate current. The spherical piezoelectric power generation device is used for low-power-consumption electronic components on the underwater robot, so that the cruising ability and the working efficiency of the underwater robot are improved.
Description
Technical Field
The invention relates to a device, in particular to a spherical piezoelectric power generation device, and belongs to the technical field of piezoelectric energy harvesting.
Background
An underwater robot is an important intelligent device in the field of ocean exploration and development, however, energy supply is always one of the main factors that restrict the cruising ability and improve the working efficiency. Although some novel energy harvesting technologies such as solar power generation, wind power generation, wave power generation and the like are applied to underwater robots, the technologies require that the underwater robots float on or near the water surface to effectively convert solar energy, wind energy or wave energy into electric energy, the conversion efficiency is greatly influenced by environments such as weather changes, and the external energy conversion device is also easily corroded by seawater, so that the energy conversion efficiency is further reduced. Some mechanical power generation devices, such as a cantilever slider piezoelectric power generation device, are easy to cause the gravity center change of the underwater robot, and influence the motion stability of the underwater robot.
Therefore, a new spherical piezoelectric power generation device is urgently needed.
Disclosure of Invention
The invention provides a spherical piezoelectric power generation device to solve the problems, and the spherical piezoelectric power generation device can be arranged in an underwater robot. The spherical piezoelectric power generation device adopts a piezoelectric material, and the piezoelectric material is sealed in the spherical shell. Along with the movement and posture change of the underwater robot, the piezoelectric material deforms to generate electric energy for some low-power-consumption electronic components on the underwater robot, so that the cruising ability and the working efficiency of the underwater robot are improved.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the invention provides a spherical piezoelectric power generation device, which comprises an outer hemispherical shell 1 and an inner hemispherical shell 2, wherein the inner hemispherical shell 2 is fixed in the outer hemispherical shell 1,
the inner surface of the outer hemispherical shell 1 is provided with a plurality of cantilever beams 6, wherein,
the outer surface of the inner hemispherical shell 2 is provided with a plurality of shifting pieces 5; wherein,
when the posture of the underwater robot changes, the inner hemispherical shell 2 rotates, and the cantilever beam 6 is simultaneously stirred by the stirring sheet 5, so that the piezoelectric sheet 61 deforms along with the cantilever beam 6 to generate current.
Further, the inner hemispherical shell 2 is fixed inside the outer hemispherical shell 1 through an annular bracket 3 and a support shaft 4, and the inner hemispherical shell 2 can rotate on the annular bracket 3.
Furthermore, a first annular groove 23 is formed in the outer surface of the inner hemispherical shell 2, and the first annular groove 23 and a second annular groove 33 formed in the inner surface of the annular support 3 form a slide way.
Furthermore, balls 7 are arranged in the slide ways, and the inner hemispherical shell 2 is in contact with the annular support 3 through the balls 7, so that the inner hemispherical shell 2 rolls in the annular support 3.
Further, the first annular groove 23 is arranged in the middle of the outer spherical surface of the inner hemispherical shell 2.
Further, the pick 5 is cylindrical.
Further, the piezoelectric sheet 61 is a polyvinylidene fluoride piezoelectric sheet 61.
Compared with the prior art, the invention has the following prominent substantive characteristics and remarkable advantages:
the two spherical shells are nested, wherein the outer hemispherical shell is fixed, the inner hemispherical shell rotates at the central fixed position of the outer hemispherical shell, and the piezoelectric patches on the outer hemispherical shell are stirred to vibrate for power generation. And the rotation center of the whole device is fixed, so that the influence of the power generation device on the motion stability of the underwater robot can be avoided, such as gravity center shift, inertia change and the like of the underwater robot caused by the motion of the power generation device. In addition, the spherical piezoelectric power generation device can be installed inside the underwater robot after being sealed, so that seawater corrosion is avoided. The size of the spherical shell, the number of the shifting pieces and the number of the piezoelectric cantilever beams can be adjusted to meet different output energy requirements.
Drawings
FIG. 1 is a front view of a spherical piezoelectric power generation device of the present invention;
FIG. 2 is an exploded view of a spherical piezoelectric power generation device of the present invention;
FIG. 3 is a schematic structural diagram of a half sphere of the spherical piezoelectric power generator of the present invention;
FIG. 4 is a schematic structural view of an inner hemispherical shell of the spherical piezoelectric power generator of the present invention;
FIG. 5 is a schematic structural view of an outer hemispherical shell of the spherical piezoelectric power generator of the present invention;
fig. 6 is a left side view of the annular frame of the spherical piezoelectric power generating device of the present invention;
FIG. 7 is a right side view of the ring mount of the spherical piezoelectric power generator of the present invention;
fig. 8 is a schematic structural view of a support shaft of the spherical piezoelectric power generating device of the present invention;
FIG. 9 is a schematic structural diagram of a plectrum of the spherical piezoelectric power generation device of the present invention;
fig. 10 is a schematic structural view of a cantilever beam and a piezoelectric sheet of the spherical piezoelectric power generator according to the present invention.
Fig. 11 is a right side view of the overall explosion structure of the spherical piezoelectric power generating device of the present invention.
Fig. 12 is a left side view of the overall explosion structure of the spherical piezoelectric power generating device of the present invention.
Corresponding part names indicated by reference numerals in the drawings:
the bearing comprises an outer hemispherical shell 1, an outer hemispherical shell 11, an inner hemispherical shell 21, an inner hemispherical shell 22, an inner hemispherical shell 23, a supporting shaft 14, a plectrum 13, a boss 15, a bearing mounting hole 31, a threaded hole 32, a supporting shaft 4, a stepped shaft 41, a supporting shaft mounting hole 42, a cantilever beam 6, a piezoelectric sheet 61, a ball 7 and a bearing 8.
Detailed Description
The preferred embodiments of the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 10, the spherical piezoelectric power generation device 100 of the present invention is formed by nesting two outer hemispherical shells 1, two inner hemispherical shells 2 and two annular supports 3, wherein the two inner hemispherical shells 2 and the two outer hemispherical shells 1 are formed by two symmetrical hemispherical shells. The inner hemispherical shell 2 is fixed inside the outer hemispherical shell 1 (namely, at the center of the sphere, the inner hemispherical shell 2 can rotate at the center of the outer hemispherical shell 1) through two annular supports 3 and a support shaft 4, and the inner hemispherical shell 2 can rotate on the annular supports 3. The inner hemispherical shell 2 is connected with the outer hemispherical shell 1 through two support shafts 4; one end of the support shaft 4 is arranged on the annular bracket 3 through a bearing 8, and the other end of the support shaft is arranged on the outer hemispherical shell 1 through a screw; the inner hemispherical shell 2 is rotatable on a support shaft 4. Wherein, the size of the outer hemispherical shell 1 and the inner hemispherical shell 2 can be adjusted.
Wherein, the both ends of outer hemisphere shell 1 are equipped with boss 15, are equipped with screw hole 11 on the boss 15, connect two outer hemisphere shells 1 into an outer spheroid through the screw. And the boss 15 is also provided with a piezoelectric power generating device mounting hole 12 for fixing the spherical piezoelectric power generating device 100 to an external apparatus (not shown).
The annular bracket 3 is provided with a bearing mounting hole 31, one end of the support shaft 4 is provided with a step shaft 41 and is connected with the annular bracket 3 through a bearing 8, and the other end of the support shaft 4 is connected with a support shaft mounting hole 14 of the outer hemispherical shell 1 through a support shaft mounting hole 42; the inner hemispherical shell 2 and the annular bracket 3 can rotate in the middle of the outer hemispherical shell 1 under the supporting action of the supporting shaft 4.
The spherical surface of the inner hemispherical shell 2 is provided with a plectrum mounting hole 22, and a plurality of cylindrical plectrums 5 are mounted in the plectrum mounting hole 22 through plectrum mounting shafts 51, so that the cylindrical plectrums 5 are mounted on the outer surface of the inner hemispherical shell 2; the cantilever beam 6 is arranged at the mounting hole 13 on the outer hemispherical shell 1, so that the cantilever beam 6 is arranged on the inner surface of the outer hemispherical shell 1; the cantilever 6 is pasted with piezoelectric patches 61 on four sides.
The outer surface of the inner hemispherical shell 2 is provided with a shifting sheet 5, the inner surface of the outer hemispherical shell 1 is provided with a cantilever beam 6, the cantilever beam 6 is made of glass fiber materials, and the four sides of the cantilever beam 6 are adhered with polyvinylidene fluoride piezoelectric sheets 61.
When the posture of an underwater robot (not shown in the figure) changes, the inner hemispherical shell 2 rotates under the action of inertia, and the plurality of cantilever beams 6 arranged on the inner sides of the outer hemispherical shells 1 are simultaneously stirred by the stirring sheets 5 on the outer surfaces of the inner hemispherical shell 2, so that the piezoelectric sheets 61 are deformed together with the cantilever beams 6 to generate current.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The spherical piezoelectric power generation device comprises an outer hemispherical shell (1) and an inner hemispherical shell (2), wherein the inner hemispherical shell (2) is fixed in the outer hemispherical shell (1),
the inner surface of the outer hemispherical shell (1) is provided with a plurality of cantilever beams (6), wherein,
piezoelectric sheets (61) are stuck on four surfaces of the cantilever beam (6);
the outer surface of the inner hemispherical shell (2) is provided with a plurality of shifting pieces (5); wherein,
when the posture of the underwater robot changes, the inner hemispherical shell (2) rotates, and the cantilever beam (6) is simultaneously pulled through the pull sheet (5), so that the piezoelectric sheet (61) deforms along with the cantilever beam (6) to generate current.
2. The spherical piezoelectric power generation device according to claim 1, wherein the inner hemispherical shell (2) is fixed inside the outer hemispherical shell (1) through an annular bracket (3) and a support shaft (4), and the inner hemispherical shell (2) can rotate on the annular bracket (3).
3. The spherical piezoelectric power generation device according to claim 2, wherein a first annular groove (23) is formed in the outer surface of the inner hemispherical shell (2), and the first annular groove (23) and a second annular groove (33) formed in the inner surface of the annular support (3) form a slideway.
4. The spherical piezoelectric power generation device according to claim 3, wherein a ball (7) is arranged in the slideway, and the inner hemispherical shell (2) is in contact with the annular bracket (3) through the ball (7), so that the inner hemispherical shell (2) rolls in the annular bracket (3).
5. The spherical piezoelectric power generator according to claim 3, wherein the first annular groove (23) is provided at a position intermediate to the outer spherical surface of the inner hemispherical shell 2.
6. The spherical piezoelectric power generator according to any one of claims 1 to 5, wherein the paddle (5) has a cylindrical shape.
7. The spherical piezoelectric power generator according to any one of claims 1 to 5, wherein the piezoelectric sheet (61) is a vinylidene fluoride piezoelectric sheet (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011303280.5A CN112383244B (en) | 2020-11-19 | 2020-11-19 | Spherical piezoelectric power generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011303280.5A CN112383244B (en) | 2020-11-19 | 2020-11-19 | Spherical piezoelectric power generation device |
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| Publication Number | Publication Date |
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| CN112383244A true CN112383244A (en) | 2021-02-19 |
| CN112383244B CN112383244B (en) | 2023-03-21 |
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Citations (9)
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| JP2004282915A (en) * | 2003-03-17 | 2004-10-07 | Nec Tokin Corp | Piezoelectric generator, light emitting device, and delineator light |
| WO2008005113A2 (en) * | 2006-06-30 | 2008-01-10 | Lv Sensors, Inc. | Inertial energy scavenger |
| JP2010212874A (en) * | 2009-03-09 | 2010-09-24 | Technical Research & Development Institute Ministry Of Defence | Cardioid hydrophone and hydrophone device using the same |
| CN102751907A (en) * | 2012-06-14 | 2012-10-24 | 广州市番禺奥迪威电子有限公司 | Cantilever beam type piezoelectric generator |
| JP2013076406A (en) * | 2012-12-26 | 2013-04-25 | Taiheiyo Cement Corp | Wind power generator using piezoelectric element, wind velocity measurement device, and wind power generation system |
| US20130264829A1 (en) * | 2012-04-04 | 2013-10-10 | Donnie E. JORDAN, SR. | Hybrid Energy Harvesting Device and Fixed Threshold Power Production |
| CN104270032A (en) * | 2014-09-24 | 2015-01-07 | 北京工业大学 | Bistable state spherical surface composite cantilever piezoelectric power generation device |
| US20160155928A1 (en) * | 2014-12-01 | 2016-06-02 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Device with deformable shell including an internal piezoelectric circuit |
| CN107834901A (en) * | 2017-11-08 | 2018-03-23 | 上海大学 | A kind of wind drives cogeneration spherical detector |
-
2020
- 2020-11-19 CN CN202011303280.5A patent/CN112383244B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004282915A (en) * | 2003-03-17 | 2004-10-07 | Nec Tokin Corp | Piezoelectric generator, light emitting device, and delineator light |
| WO2008005113A2 (en) * | 2006-06-30 | 2008-01-10 | Lv Sensors, Inc. | Inertial energy scavenger |
| JP2010212874A (en) * | 2009-03-09 | 2010-09-24 | Technical Research & Development Institute Ministry Of Defence | Cardioid hydrophone and hydrophone device using the same |
| US20130264829A1 (en) * | 2012-04-04 | 2013-10-10 | Donnie E. JORDAN, SR. | Hybrid Energy Harvesting Device and Fixed Threshold Power Production |
| CN102751907A (en) * | 2012-06-14 | 2012-10-24 | 广州市番禺奥迪威电子有限公司 | Cantilever beam type piezoelectric generator |
| JP2013076406A (en) * | 2012-12-26 | 2013-04-25 | Taiheiyo Cement Corp | Wind power generator using piezoelectric element, wind velocity measurement device, and wind power generation system |
| CN104270032A (en) * | 2014-09-24 | 2015-01-07 | 北京工业大学 | Bistable state spherical surface composite cantilever piezoelectric power generation device |
| US20160155928A1 (en) * | 2014-12-01 | 2016-06-02 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Device with deformable shell including an internal piezoelectric circuit |
| CN107834901A (en) * | 2017-11-08 | 2018-03-23 | 上海大学 | A kind of wind drives cogeneration spherical detector |
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