CN104836476A - Piezoelectric vibration energy collector - Google Patents
Piezoelectric vibration energy collector Download PDFInfo
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- CN104836476A CN104836476A CN201510209186.6A CN201510209186A CN104836476A CN 104836476 A CN104836476 A CN 104836476A CN 201510209186 A CN201510209186 A CN 201510209186A CN 104836476 A CN104836476 A CN 104836476A
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Abstract
The invention discloses a piezoelectric vibration energy collector. The piezoelectric vibration energy collector can convert mechanical energy generated by vibration at a surrounding environment into electrical energy. The vibration energy collector is composed of a shell, springs, a mass block with arrayed picks, a guide rod, a piezoelectric power generation structure, a blocking seat and wires. When the vibration energy collector is installed in a vibration environment or carried by a human body, vibration of the environment or human body will drive the mass block to vibrate up and down along the mass block, so that the picks of the mass block can constantly pick the piezoelectric power generation structure, and therefore, the piezoelectric power generation structure can be deformed, and mechanical energy-to-electric energy conversion can be realized. The piezoelectric vibration energy collector of the invention is different from a traditional electromagnetic induction energy acquisition mode in that the piezoelectric vibration energy collector adopts a piezoelectric mode. The piezoelectric vibration energy collector has the advantages of simplified structure, convenience in installation, long service life and the like; and the mass block in the piezoelectric vibration energy collector is provided with the pick array, and therefore, low-frequency environment vibration can excite the piezoelectric power generation structure in the vibration energy collector to perform high-frequency vibration, and therefore, energy conversion efficiency can be significantly improved.
Description
Technical field
The present invention relates to machinery and electroporation field, particularly a kind of vibrational energy harvester.
Background technology
Mobile electronic device and wireless sensor network obtain in the past and develop fast decades, are especially widely used in health detection, environmental pollution monitoring, military surveillance and field animal tracking etc.Usual above-mentioned device relies on traditional chemical cell to provide energy, however the limited electric energy that traditional chemical cell can store make they need periodic replacement, and produce and discarded time may cause the problems such as environmental pollution.So some researchers attempt harvest energy from environment to power to mobile electronic device and wireless senser, thus make mobile electronic device and wireless senser when do not need can even timeless work for a long time when changing battery both at home and abroad.
Mechanical oscillation are ubiquitous a kind of form of energy in environment, are extensively present in average family electrical equipment, industrial machinery, transport facility and organism etc.It is electric energy that the vibration energy collector utilizing piezoelectric to prepare can realize the power conversion of vibration.The typical structure of a piezoelectric type vibration energy collecting device is that the one end utilizing piezoelectric to prepare is fixed and other end sheet cantilever beam structure freely, and when the frequency of the ambient vibration encouraging piezoelectric is higher, the energy conversion efficiency of vibration energy collector is higher.But it is to be noted that the frequency of usual ambient vibration is at below 200Hz, the vibration of this lower frequency often makes piezoelectric type vibration energy collecting device be difficult to have higher energy conversion efficiency.
Summary of the invention
The object of the present invention is to provide a kind of piezoelectric type vibration energy collecting device, its Internal moving mass is provided with plectrum array, the ambient vibration making frequency lower piezo-electric generating structure can carry out the vibration of upper frequency in excited vibration energy collecting device, thus significantly improves energy conversion efficiency.
The technical solution used in the present invention is: vibration energy collector by housing 1, spring 2, mass 3, guide rod 4, piezo-electric generating structure 5 with array plectrum, keep out seat 6 and wire 7 forms; The center of mass 3 is provided with the cylindrical elongated hole 8 mated with guide rod 4, and mass 3 freely up and down can slide along guide rod 4; Guide rod 4 runs through mass 3, and two ends are fixedly connected on the inner top and bottom of housing 1; Spring 2 two ends are separately fixed on mass 3 and housing 1; Piezo-electric generating structure 5 by piece of metal support chip 10 and be attached to respectively metallic support sheet side on the surface thin sheets of piezoelectric material 9 and opposite side on the surface piezoelectric 11 form; Keep out seat 6 and a piezo-electric generating structure 5 matches, form the both sides that two quadrant column structures of keeping out seat 6 or similar structures lay respectively at piezo-electric generating structure 5, be together fixed on the side of housing 1 inside with piezo-electric generating structure 5.
When this vibration energy collector is arranged in vibration environment or when being carried on human body, the vibration of environment or human body pulls kinoplaszm gauge block 3 along guide rod 4 up-down vibration by spring 2, the plectrum of mass 3 is made ceaselessly to stir piezo-electric generating structure 5, thus make piezo-electric generating structure 5 that deformation occur, thin sheets of piezoelectric material 9 and thin sheets of piezoelectric material 11 produce electric energy.Thin sheets of piezoelectric material 9 is connected with the mode of thin sheets of piezoelectric material 11 by serial or parallel connection, and connects rectification circuit, voltage stabilizing circuit and energy-storage travelling wave tube further, finally realizes the output of electric energy, thus is embodied as various electronic device and provides electric energy.
The present invention adopts technique scheme compared with prior art, can reach following effect:
1. existing vibration energy collector is mainly based on the mode of electromagnetic induction, and this device is in order to obtain larger induced current, and often volume is comparatively large and structure is comparatively complicated.And the vibration energy collector that the present invention proposes adopts piezoelectric type structure, utilize suspension type mass to stir piezoelectric patches and carry out the structure that generates electricity, compact, simple structure, being easy to realize integrally-built microminiaturization and integrated.
2. Internal moving mass of the present invention is provided with plectrum array, the ambient vibration making frequency lower piezo-electric generating structure can carry out the vibration of upper frequency in excited vibration energy collecting device, thus increases substantially energy conversion efficiency.
3. the present invention can be used to, to power supplies such as various mobile electronic device, wireless sense networks, break away from battery powered constraint.
Accompanying drawing explanation
Fig. 1 is the planar structure schematic diagram of piezoelectric type vibration energy collecting device of the present invention, 1-housing; 2-is with the mass of array plectrum; 3-spring; 4-guide rod; 5-piezo-electric generating structure; 6-keeps out seat; 7-wire.
Fig. 2 is the structural representation of the mass 3 with array plectrum in vibration energy collector of the present invention, and mass 3 center is provided with the cylindrical elongated hole 8 mated with guide rod 4.
Fig. 3 is the structural representation of guide rod 4 in vibration energy collector of the present invention.
Fig. 4 is the structural representation of compressing tablet electrification structure 5 in vibration energy collector of the present invention, 9-thin sheets of piezoelectric material; 10-metallic support sheet; 11-thin sheets of piezoelectric material.
Fig. 5 is the structural representation of keeping out seat 6 in vibration energy collector of the present invention.
Fig. 6 is the energy management circuit of vibration energy collector of the present invention.
Embodiment
Below in conjunction with Figure of description, apparatus of the present invention are described in further detail.
Embodiment is as follows:
With reference to Fig. 1, the vibration energy collector that the present invention proposes by housing 1, spring 2, mass 3, guide rod 4, piezo-electric generating structure 5 with array plectrum, keep out seat 6 and wire 7 forms.Housing 1 is cuboid metal-back.Between mass 3 upper and lower surface and the inner upper and lower surface of housing 1, be connected with the spring 2 that two row length are identical with coefficient of elasticity, guide rod 4 runs through mass 3, and two ends are fixedly connected on the inner top and bottom of housing 1.Piezo-electric generating structure 5 and keep out the both sides that the modes such as seat 6 can use bonding agent bonding are fixed on housing 1 inside.Wire 7 is welded on the electrode of two panels piezoelectric sheet in piezo-electric generating structure 5.
Fig. 2 is the structural representation of the mass 3 with array plectrum, and the middle part of mass 3 is an oval post holes, and the diameter of cylindrical hole is larger than the diameter of guide rod 4, makes guide rod 4 can run through mass 3.Two side bonds some plectrums of mass 3.Fig. 4 is the structural representation of piezo-electric generating structure 5, is made up of thin sheets of piezoelectric material 9, metallic support sheet 10, thin sheets of piezoelectric material 11, and thin sheets of piezoelectric material 9 and thin sheets of piezoelectric material 11 are bonded on two surfaces of metallic support sheet 10 respectively by binding agent.Keeping out seat 6 is two quadrant column structures or similar structures, and as shown in Figure 5, it is more smooth to keep out seat 6 surface, and material can be plastics or metal.
When this vibration energy collector is arranged in vibration environment or when being carried on human body, the vibration of environment or human body pulls kinoplaszm gauge block 3 along guide rod 4 up-down vibration by spring 2, the plectrum of mass 3 is made ceaselessly to stir piezo-electric generating structure 5, thus make piezo-electric generating structure 5 that deformation occur, thin sheets of piezoelectric material 9 and thin sheets of piezoelectric material 11 produce electric energy.
With reference to Fig. 6, vibration energy collector of the present invention just can be powered to various electronic equipment after over commutation, voltage stabilizing, storage.
Claims (3)
1. a piezoelectric type vibration energy collecting device, is characterized in that, by housing (1), spring (2), mass (3), guide rod (4), piezo-electric generating structure (5) with array plectrum, keeps out seat (6) and wire (7) forms; The center of mass (3) is provided with the cylindrical elongated hole (8) mated with guide rod (4), and guide rod (4) runs through mass (3), and two ends are fixedly connected on housing (1) inner top and bottom; Spring (2) two ends are separately fixed on mass (3) and housing (1); Piezo-electric generating structure (5) by piece of metal support chip (10) and be attached to metallic support sheet (10) respectively side on the surface thin sheets of piezoelectric material (9) and opposite side on the surface piezoelectric (11) form; Keep out seat (6) to match with a piezo-electric generating structure (5), form and keep out the both sides that two quadrant column structures of seat (6) or similar structures lay respectively at piezo-electric generating structure (5), be together fixed on the inner side of housing (1) with piezo-electric generating structure (5).
2. a kind of piezoelectric type vibration energy collecting device according to claim 1, is characterized in that, mass (3) freely up and down can slide along guide rod (4).
3. a kind of piezoelectric type vibration energy collecting device according to claim 1, it is characterized in that, thin sheets of piezoelectric material (9) is connected by parallel way with thin sheets of piezoelectric material (11), and connect rectification circuit, voltage stabilizing circuit and energy-storage travelling wave tube further, realize the output of electric energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510209186.6A CN104836476A (en) | 2015-04-29 | 2015-04-29 | Piezoelectric vibration energy collector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510209186.6A CN104836476A (en) | 2015-04-29 | 2015-04-29 | Piezoelectric vibration energy collector |
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| CN104836476A true CN104836476A (en) | 2015-08-12 |
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| CN201510209186.6A Pending CN104836476A (en) | 2015-04-29 | 2015-04-29 | Piezoelectric vibration energy collector |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915111A (en) * | 2016-05-05 | 2016-08-31 | 重庆大学 | Piezoelectric generation device |
| CN106787944A (en) * | 2017-02-27 | 2017-05-31 | 河海大学 | A kind of piezoelectric transducer |
| CN106803726A (en) * | 2015-11-26 | 2017-06-06 | 清华大学 | Low-frequency vibration electromagnetic energy collector |
| CN107040166A (en) * | 2017-06-07 | 2017-08-11 | 张曦予 | Override type volt for corridor wall guide lamp including same can device |
| CN107061208A (en) * | 2017-06-14 | 2017-08-18 | 苏州赛易特环保科技有限公司 | A kind of shaking generation device |
| CN110503585A (en) * | 2019-08-30 | 2019-11-26 | 佛山市启明星智能科技有限公司 | A kind of students ' physical tutoring system and method |
| CN111649818A (en) * | 2020-05-29 | 2020-09-11 | 深圳清华大学研究院 | Passive sensor based on structure is super smooth |
| CN113037135A (en) * | 2021-03-29 | 2021-06-25 | 郑州大学 | Energy storage device for flat-plate mobile electronic products |
-
2015
- 2015-04-29 CN CN201510209186.6A patent/CN104836476A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106803726A (en) * | 2015-11-26 | 2017-06-06 | 清华大学 | Low-frequency vibration electromagnetic energy collector |
| CN106803726B (en) * | 2015-11-26 | 2019-05-10 | 清华大学 | Low-frequency vibration electromagnetic energy collector |
| CN105915111A (en) * | 2016-05-05 | 2016-08-31 | 重庆大学 | Piezoelectric generation device |
| CN105915111B (en) * | 2016-05-05 | 2018-05-08 | 重庆大学 | A kind of piezoelectric generating device |
| CN106787944B (en) * | 2017-02-27 | 2018-08-28 | 河海大学 | A kind of piezoelectric transducer |
| CN106787944A (en) * | 2017-02-27 | 2017-05-31 | 河海大学 | A kind of piezoelectric transducer |
| CN107040166A (en) * | 2017-06-07 | 2017-08-11 | 张曦予 | Override type volt for corridor wall guide lamp including same can device |
| CN107061208A (en) * | 2017-06-14 | 2017-08-18 | 苏州赛易特环保科技有限公司 | A kind of shaking generation device |
| CN110503585A (en) * | 2019-08-30 | 2019-11-26 | 佛山市启明星智能科技有限公司 | A kind of students ' physical tutoring system and method |
| CN111649818A (en) * | 2020-05-29 | 2020-09-11 | 深圳清华大学研究院 | Passive sensor based on structure is super smooth |
| CN111649818B (en) * | 2020-05-29 | 2022-03-11 | 深圳清华大学研究院 | Passive sensor based on structure is super smooth |
| CN113037135A (en) * | 2021-03-29 | 2021-06-25 | 郑州大学 | Energy storage device for flat-plate mobile electronic products |
| CN113037135B (en) * | 2021-03-29 | 2022-07-26 | 郑州大学 | Energy storage device for flat-plate mobile electronic products |
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Application publication date: 20150812 |