CN203645578U - Wind-induced vibration broadband piezoelectric power generation device - Google Patents
Wind-induced vibration broadband piezoelectric power generation device Download PDFInfo
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- CN203645578U CN203645578U CN201420003165.XU CN201420003165U CN203645578U CN 203645578 U CN203645578 U CN 203645578U CN 201420003165 U CN201420003165 U CN 201420003165U CN 203645578 U CN203645578 U CN 203645578U
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Abstract
A wind-induced vibration broadband piezoelectric power generation device comprises a fan, a fixed bearer, rotary permanent magnets, a rotating shaft, a fixed permanent magnet, springs, a support frame and at least two piezoelectric generating beams. The rotary permanent magnets and the fan are fixed on the same rotating shaft, the support frame is fixed on the fixed bearer via four identical springs, one end of each piezoelectric generating beam is fixed to the support frame, and the fixed permanent magnet is fixed at the lower end of the support frame. The piezoelectric generating beam is composed of a metal counterweight block, an elastic metal sheet, an upper piezoelectric patch and a lower piezoelectric patch, wherein the metal counterweight block is fixed at the free end of the elastic metal sheet, and the upper and lower piezoelectric patches are respectively pasted to the upper and lower surfaces of the elastic metal sheet. The wind-induced vibration broadband piezoelectric power generation device can convert wind energy in the surrounding into mechanical vibration energy and generate electric energy, the piezoelectric power generation device works without limitation of a mechanical vibration source, use is convenient, and the expansibility is strong.
Description
Technical field
The utility model belongs to novel energy and electronic technology field, particularly a kind of wind-induced vibration broadband piezoelectric generating device.
Background technology
In recent years; along with socioeconomic high speed development; demand to the energy increases severely day by day, and environmental pollution and energy shortage become a common difficulty of puzzlement countries in the world, and the ecological deterioration causing therefrom and energy crisis start to affect economic development and people's life gradually.Under the pressure of this pressure, various countries scientific worker has started the exploration of searching and the development of new energy, such as solar energy, wind energy, wave energy, vibrational energy etc.Wherein, piezoelectric generating device is as a kind of novel miniature power generating device, and it only depends on the life-span of the each components and parts that form Blast Furnace Top Gas Recovery Turbine Unit (TRT) for electric life in theory, and clean environment firendly is a kind of typical " green " energy technology.
Based on this, there is at present the piezoelectric generating device of various patterns, as cantilever beam structure, Cymbal structure, stack shape structure etc.Make a general survey of the present Research of piezo-electric generating technology, the energy that above-mentioned piezoelectric generating device is collected is mainly derived from the mechanical vibration source of surrounding environment, is also that designed piezoelectric generating device is mainly oscillatory type piezoelectric generating device.Although oscillatory type piezoelectric generating device efficiency is higher, but must there is its effect of mechanical vibration source competence exertion, and be in particular cases difficult to find the generating capacity of effective vibration source implement device at some, such as the place remote in desert island, unmanned mountain area etc., bring inconvenience with regard to the energy supply of giving field communication and sensing network equipment like this.Consider wind energy resources abundant in external environment, how the wind energy in external environment being applied to piezoelectric generating device is a direction that is worth very much research.
Therefore someone designs equipment as described in patent documentation CN201310357008.9 accompanying drawing 1 by wind-force driven rotary formula piezo-electric generating charger, the low velocity wind energy making full use of in environment is that wireless sensor node is forever powered, although this structure adopts contactless magnetic pumping mode to transform wind energy, but this patent and some other patent electromagnetic force are to directly act on piezoelectric cantilever end, distance on its cantilever beam end permanent magnet and rotating disk between permanent magnet needs accurate Calculation, otherwise be easy to make piezoelectric ceramic on piezoelectric cantilever to produce embrittlement because distortion is excessive, the distortion that is piezoelectric cantilever is not easy to control.In addition, the quantity of the set cantilever beam of this patent is subject to certain restrictions, because the dense distribution of piezoelectric cantilever can influence each other because the permanent magnet of cantilever beam end causes cantilever beam to produce.Besides, owing to being subject to project organization restriction, this patent structure expansion is limited, and this brings difficulty to the follow-up improvement design of patent.
Utility model content
Technical problem to be solved in the utility model is for the defect in aforementioned background art and deficiency, a kind of wind-induced vibration broadband piezoelectric generating device is provided, the utility model is mechanical vibrational energy by the wind energy transformation in external environment, and produce electric energy, make the work of piezoelectric generating device not be subject to the restriction of mechanical vibration source, easy to use, autgmentability is strong.
The utility model is for solving the problems of the technologies described above, and the technical scheme adopting is:
The utility model provides a kind of wind-induced vibration broadband piezoelectric generating device, comprise fan, hold-down support, rotating permanent magnet, rotating shaft, fixed permanent magnet, spring, support frame and at least 2 piezo-electric generating beams, described rotating permanent magnet and fan are fixed on same rotating shaft, and the N utmost point of each rotating permanent magnet points to rotating shaft axle center, described support frame is fixed on hold-down support by 4 identical springs, and each piezo-electric generating beam one end is fixed on support frame; Described fixed permanent magnet is fixed on support frame lower end, and the S utmost point of fixed permanent magnet points to rotating shaft, described piezo-electric generating beam is made up of metallic gauge block, resilient blade, upper strata piezoelectric patches and lower floor's piezoelectric patches, described metallic gauge block is fixed on resilient blade free end and knee, and upper strata piezoelectric patches and lower floor's piezoelectric patches are pasted on respectively upper and lower two surfaces of resilient blade.
As further improvement of the utility model, the metallic gauge block of described each piezo-electric generating beam, resilient blade, upper strata piezoelectric patches are different with the dimensional parameters of lower floor's piezoelectric patches, and the utility model changes by the parameter that the parameters of operating part design of piezoelectric cantilever is realized to different piezoelectric cantilevers.
As further improvement of the utility model, described piezo-electric generating beam is piezoelectric cantilever or L shaped piezo-electric generating beam, and because the relative structure of the utility model piezo-electric generating beam is independent, not therefore being subject to shape limitation replaceable is L shaped piezo-electric generating beam.
As further improvement of the utility model, the free-ended metallic gauge block of described piezoelectric cantilever is permanent magnet, on described hold-down support, there is coil windings, the utility model is can spreading range very wide, even piezoelectric cantilever partial design can be become piezoelectricity-electromagnetism composite structure to realize piezoelectricity-electromagnetism combined power generation by this structure.
As further improvement of the utility model, described piezoelectric patches adopts piezoelectric ceramic as material, and piezoelectric ceramic piezoelectricity is higher, and the utility model uses piezoelectric ceramic can greatly improve the collection of energy effect of device as piezoelectric.
As further improvement of the utility model, described piezoelectric patches is rectangle or triangular shaped, and through-thickness polarization, and because the relative structure of the utility model piezoelectric cantilever is independent, therefore the restriction of piezoelectric patches shape is few, can use rectangle or triangular shaped.
As further improvement of the utility model, the quantity of described piezoelectric cantilever is k, k is positive integer, the quantity of described rotating permanent magnet is n, and n is positive integer, and each rotating permanent magnet is along being circumferentially distributed on rotating shaft, because the relative structure of the utility model piezoelectric cantilever is independent, therefore can spreading range very wide, therefore can use multiple piezoelectric cantilevers, and the structure of piezoelectric cantilever also can change.
Adopt after such scheme, the utility model, by fan, rotating permanent magnet, fixed permanent magnet, spring, support frame and multiple piezoelectric cantilever are set, in the situation that being difficult to find effective vibration source, also can be installed and used, simultaneously, the piezoelectric cantilever of different size parameter can be set in piezoelectric generating device, widen the frequency band of piezoelectric generating device collection of energy, strengthen the practicality of device, in addition due in the utility model application by fixed permanent magnet on support frame and rotating shaft between rotating permanent magnet the effect of electromagnetic force realize the forced vibration of piezoelectric cantilever, therefore electromagnetic force does not directly act on piezoelectric cantilever, therefore piezoelectric cantilever is played a protective role, because the utility model piezoelectric cantilever is relatively independent, therefore the utility model application extensibility is strong.Also be that piezoelectric energy-conversion part in support frame might not be confined to piezoelectric cantilever, also can be set to L shaped piezo-electric generating beam, or even piezoelectricity-electromagnetism composite structure all can be implemented.
Brief description of the drawings
Fig. 1 is the utility model prior art schematic diagram;
Fig. 2 is that the utility model piezo-electric generating beam is the structural representation of piezoelectric cantilever embodiment;
Fig. 3 is the structural representation of piezoelectric cantilever in the utility model;
Fig. 4 is that the utility model piezo-electric generating beam is the structural representation of L shaped piezo-electric generating beam embodiment;
Fig. 5 is that the utility model piezo-electric generating beam is the structural representation of piezoelectricity-electromagnetism composite structure embodiment;
Concrete parts are as follows:
1, fan; 2, hold-down support; 3, rotating permanent magnet;
4, rotating shaft; 5, fixed permanent magnet; 6, spring;
7, support frame; 8, piezoelectric cantilever; 81, metallic gauge block;
82, resilient blade; 83, upper strata piezoelectric ceramic piece; 84, lower floor's piezoelectric ceramic piece;
9, L shaped piezo-electric generating beam; 10, coil windings.
Embodiment
Below in conjunction with drawings and Examples, utility model is described in detail:
The utility model is in conjunction with shown in Fig. 2, the utility model provides a kind of wind-induced vibration broadband piezoelectric generating device, comprise fan 1, hold-down support 2, rotating permanent magnet 3, rotating shaft 4, fixed permanent magnet 5, spring 6, support frame 7 and multiple piezoelectric cantilever 8, introduce respectively below.
The quantity of the utility model rotating permanent magnet 3 is n, and n is positive integer, and each rotating permanent magnet 3 is along being circumferentially distributed on rotating shaft 4.
The number of the utility model piezoelectric cantilever 8 can be selected according to actual conditions, as selected in the present embodiment 2, its one end is fixed on support frame 7, the other end arranges metallic gauge block 81 and in free state, coordinate shown in Fig. 3, piezoelectric cantilever 8 in the present embodiment comprises metallic gauge block 81, resilient blade 82, upper strata piezoelectric ceramic piece 83 and lower floor's piezoelectric ceramic piece 84, wherein, upper strata piezoelectric ceramic piece 83 and lower floor's piezoelectric ceramic piece 84 are attached at respectively upper surface and the lower surface of resilient blade 82 in the same way, in order to mechanical energy is converted into electric energy by direct piezoelectric effect, described upper strata piezoelectric ceramic piece 83, the 84 through-thickness polarization of lower floor's piezoelectric ceramic piece, metallic gauge block 81 is located at the free end of resilient blade 82, is used for reducing the natural frequency that piezoelectric cantilever 8 vibrates.
The present embodiment, in the time of work, is placed in a certain external environment that has wind by device, and is fixed by hold-down support 2, wind energy in environment is rotated drive fan 1, the rotation of fan 1 rotates driven rotary axle 4, utilize the repulsive force of the rotating permanent magnet 3 being circumferentially evenly arranged on rotating shaft 4 to fixed permanent magnet fixing on support frame 75, to make the multiple piezoelectric cantilevers 8 in device produce forced vibration, resilient blade 82 will produce the flexural deformation alternately changing, thereby the upper strata piezoelectric ceramic piece 83 and the lower floor's piezoelectric ceramic piece 84 that make to stick in resilient blade 82 produce the flexural deformation alternately changing, according to the direct piezoelectric effect of piezoelectric, on the positive and negative electrode face of upper strata piezoelectric ceramic piece 83 and lower floor's piezoelectric ceramic piece 84, just producing, the electric charge that negative is anti-, realized the conversion to electric energy by wind energy, in addition, the polarised direction of upper strata piezoelectric ceramic piece 83 and lower floor's piezoelectric ceramic piece 84 is contrary when pasting, thereby will produce the electric charge of same-sign at the bottom electrode face of power on pole-face and lower floor's piezoelectric ceramic piece 84 of upper strata piezoelectric ceramic piece 83.In addition, due to the piezoelectric cantilever 8 of different size parameter can be set in piezoelectric generating device, thereby the frequency band range of piezoelectric generating device harvest energy is wider, be also that piezoelectric generating device can be realized the efficient collection of wind energy in certain wind speed range in external environment.As can be seen here, the utility model has been realized high efficiency wind energy collecting in wide wind speed range.
In addition the utility model also can be designed to piezo-electric generating beam as shown in Figure 4 L shaped piezo-electric generating beam 9 or as shown in Figure 5 piezo-electric generating beam is designed to the free-ended metallic gauge block of piezoelectric cantilever 8 81 for permanent magnet, and coil windings 10 is set on support frame 7, realize piezoelectricity-electromagnetism combined power generation by piezoelectricity-electromagnetism composite structure.。
In sum, the wind-induced vibration broadband piezoelectric generating device the utility model proposes, the wind speed in energy perception certain limit, in the situation that being difficult to find effective vibration source, also can collect higher energy, effectively widen the scope of application of this piezoelectric generating device, strengthen its practicality.
The above; it is only preferred embodiment of the present utility model; be not the restriction of the utility model being made to any other form, and according to any amendment or equivalent variations that technical spirit of the present utility model is done, still belong to the utility model scope required for protection.
Claims (7)
1. a wind-induced vibration broadband piezoelectric generating device, it is characterized in that: comprise fan (1), hold-down support (2), rotating permanent magnet (3), rotating shaft (4), fixed permanent magnet (5), spring (6), support frame (7) and at least 2 piezo-electric generating beams, described rotating permanent magnet (3) is fixed on same rotating shaft (4) with fan (1), and the N utmost point of each rotating permanent magnet (3) points to rotating shaft (4) axle center, described support frame (7) is fixed on hold-down support (2) by 4 identical springs (6), each piezo-electric generating beam one end is fixed on support frame (7), described fixed permanent magnet (5) is fixed on support frame (7) lower end, and the S utmost point of fixed permanent magnet (5) points to rotating shaft (4), described piezo-electric generating beam is made up of metallic gauge block (81), resilient blade (82), upper strata piezoelectric patches and lower floor's piezoelectric patches, described metallic gauge block (81) is fixed on resilient blade (82) free end or knee, and upper strata piezoelectric patches and lower floor's piezoelectric patches are pasted on respectively upper and lower two surfaces of resilient blade (82).
2. wind-induced vibration broadband piezoelectric generating device as claimed in claim 1, is characterized in that: the metallic gauge block (81) of described each piezo-electric generating beam, resilient blade (82), upper strata piezoelectric patches are different with the dimensional parameters of lower floor's piezoelectric patches.
3. wind-induced vibration broadband piezoelectric generating device as claimed in claim 1, is characterized in that: described piezo-electric generating beam is piezoelectric cantilever (8) or L shaped piezo-electric generating beam (9).
4. wind-induced vibration broadband piezoelectric generating device as claimed in claim 3, is characterized in that: the free-ended metallic gauge block of described piezoelectric cantilever (8) (81) is permanent magnet, has coil windings (10) on described support frame (7).
5. wind-induced vibration broadband piezoelectric generating device as claimed in claim 1, is characterized in that: described piezoelectric patches is rectangle or triangular shaped, and through-thickness polarization.
6. wind-induced vibration broadband piezoelectric generating device as claimed in claim 1, is characterized in that: the quantity of described piezoelectric cantilever is k, and k is positive integer.
7. wind-induced vibration broadband piezoelectric generating device as claimed in claim 1, is characterized in that: the quantity of described rotating permanent magnet is n, and n is positive integer, and each rotating permanent magnet is along being circumferentially distributed on rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420003165.XU CN203645578U (en) | 2014-01-03 | 2014-01-03 | Wind-induced vibration broadband piezoelectric power generation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420003165.XU CN203645578U (en) | 2014-01-03 | 2014-01-03 | Wind-induced vibration broadband piezoelectric power generation device |
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| CN203645578U true CN203645578U (en) | 2014-06-11 |
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| CN201420003165.XU Withdrawn - After Issue CN203645578U (en) | 2014-01-03 | 2014-01-03 | Wind-induced vibration broadband piezoelectric power generation device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701364A (en) * | 2014-01-03 | 2014-04-02 | 金陵科技学院 | Wind-induced vibration broadband piezoelectric power generator |
| CN104578910A (en) * | 2015-01-09 | 2015-04-29 | 上海大学 | Internal-resonance broadband vibration energy harvester of L-shaped beam structure |
| CN105305879A (en) * | 2015-10-10 | 2016-02-03 | 浙江工商大学 | Right-angled piezoelectric cantilever beam vibration energy harvester |
| CN107147330A (en) * | 2017-06-21 | 2017-09-08 | 北京机械设备研究所 | A kind of non-linear piezoelectricity electromagnetism combined wide-band energy accumulator |
| CN109861584A (en) * | 2019-04-09 | 2019-06-07 | 苏州市职业大学 | A kind of power generator for collecting arms swing energy |
| CN112653353A (en) * | 2020-12-31 | 2021-04-13 | 重庆大学 | Microminiature piezoelectric type wind power generation device |
| CN113992059A (en) * | 2021-10-21 | 2022-01-28 | 上海大学 | Rotary energy acquisition device and tire pressure monitoring system |
-
2014
- 2014-01-03 CN CN201420003165.XU patent/CN203645578U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701364A (en) * | 2014-01-03 | 2014-04-02 | 金陵科技学院 | Wind-induced vibration broadband piezoelectric power generator |
| CN103701364B (en) * | 2014-01-03 | 2016-01-06 | 金陵科技学院 | A kind of wind-induced vibration broadband piezoelectric power generator |
| CN104578910A (en) * | 2015-01-09 | 2015-04-29 | 上海大学 | Internal-resonance broadband vibration energy harvester of L-shaped beam structure |
| CN105305879A (en) * | 2015-10-10 | 2016-02-03 | 浙江工商大学 | Right-angled piezoelectric cantilever beam vibration energy harvester |
| CN107147330A (en) * | 2017-06-21 | 2017-09-08 | 北京机械设备研究所 | A kind of non-linear piezoelectricity electromagnetism combined wide-band energy accumulator |
| CN109861584A (en) * | 2019-04-09 | 2019-06-07 | 苏州市职业大学 | A kind of power generator for collecting arms swing energy |
| CN109861584B (en) * | 2019-04-09 | 2024-02-09 | 苏州市职业大学 | Power generation device for collecting arm swing energy |
| CN112653353A (en) * | 2020-12-31 | 2021-04-13 | 重庆大学 | Microminiature piezoelectric type wind power generation device |
| CN113992059A (en) * | 2021-10-21 | 2022-01-28 | 上海大学 | Rotary energy acquisition device and tire pressure monitoring system |
| CN113992059B (en) * | 2021-10-21 | 2024-05-10 | 上海大学 | Rotary energy acquisition device and tire pressure monitoring system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140611 Effective date of abandoning: 20160106 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |