CN102624281B - Multidimensional vibration energy collector capable of realizing non-contact excitement - Google Patents

Multidimensional vibration energy collector capable of realizing non-contact excitement Download PDF

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Publication number
CN102624281B
CN102624281B CN201210088945.4A CN201210088945A CN102624281B CN 102624281 B CN102624281 B CN 102624281B CN 201210088945 A CN201210088945 A CN 201210088945A CN 102624281 B CN102624281 B CN 102624281B
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China
Prior art keywords
piezoelectric vibrator
magnet
mass
piezoelectric
housing
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CN201210088945.4A
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Chinese (zh)
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CN102624281A (en
Inventor
阚君武
张肖逸
王淑云
程光明
刘坤
赵子谦
刘座铭
康军
翟翟
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浙江师范大学
国网吉林省电力有限公司电力科学研究院
国家电网公司
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Priority to CN201210088945.4A priority Critical patent/CN102624281B/en
Publication of CN102624281A publication Critical patent/CN102624281A/en
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Abstract

The invention relates to a multidimensional vibration energy collector capable of realizing non-contact excitement, and belongs to the technical field of new energy and electrical generation. Connecting seats are respectively arranged on an upper top surface and a lower bottom surface of a shell body, and are used for fixing piezoelectric vibrators, and the piezoelectric vibrators are fixed on the connecting seats through screws; each piezoelectric vibrator is formed by adhering a metal substrate and a piezoelectric wafer, and a magnet is arranged at an end part of the piezoelectric vibrator; a tension spring is arranged on the upper top surface of the shell body, a pressure spring is arranged on the lower bottom surface of the shell body, the other ends of the tension spring and the pressure spring are respectively connected with mass blocks, and magnets are embedded around the mass blocks; and the magnets at end parts of the piezoelectric vibrators and the magnets embedded on the mass blocks are arranged in such a manner that homopolar magnet poles are opposite to each other. The multidimensional vibration energy collector capable of realizing non-contact excitement has the advantage that low-frequency and large-amplitude vibration energy in any direction can be collected.

Description

A kind of multi-dimensional vibration energy collecting device of noncontact excitation

Technical field

The invention belongs to new forms of energy and technical field of power generation, be specifically related to the multi-dimensional vibration energy collecting device of noncontact excitation, for low frequency, large amplitude, multidirectional vibration energy harvesting.

Background technology

For meet micropower electronic product and microminiature remote sensing and heeling-in monitoring system self-powered demand, avoid a large amount of waste battery contaminated environment, the research based on the microminiature energy collecting device of the principles such as electromagnetism, electrostatic, thermoelectricity, electric capacity and piezoelectricity has become forward position both domestic and external focus.All kinds of energy collecting device has himself advantage and suitable application area, the advantage of piezoelectric type vibration energy collecting device is that structure is simple, be easy to make and microminiaturization on implementation structure and integrated etc., therefore the scope of application is wider, now progressively for fields such as transducer, health monitoring and wireless transmitting systems.

Reclaim in vibrational energy generating utilizing piezoelectric, all there is more patent application both at home and abroad, early stage energy collecting device structure mostly is cantilever beam and the circular piezoelectric vibrator of monomer, also occurred forming energy collecting device by multiple piezoelectric vibrator at present, object is the effective frequency belt width of increase piezoelectric energy collector or realizes multiple direction of vibration vibration energy harvesting.As, Chinese invention patent 201010601354.3 proposes the dandelion formula energy collecting device that a kind of multiple cantilever beam piezoelectric vibrators is formed, and can realize the vibration energy regeneration of extensional vibration and a horizontal direction; Chinese patent 200810106046.6 proposes the broadband piezoelectric energy collector that a kind of different length cantilever beam piezoelectric vibrators is formed, etc.As everyone knows, only when piezoelectric vibrator natural frequency is equal with environmental vibration frequency, piezoelectric energy collector just has larger generating capacity and higher energy efficiency.But because the resonance frequency of piezoelectric vibrator is usually higher, reach hundreds of or a few KHz, and environmental vibration frequency is generally only tens hertz, therefore directly utilizes the effect of piezoelectric vibrator collection environment vibrational energy not remarkable.For reducing the natural frequency of piezoelectric vibrator, the method adopted at present is installation quality block on piezoelectric vibrator, and when installed mass is larger, non operating state lower piezoelectric oscillator already produces moderate finite deformation, also can damage because being out of shape excessive in the course of work.Visible, existing piezoelectric vibration energy collector own frequency band is narrow, natural frequency is high and vibration energy regeneration direction single be still restriction practical application technical bottleneck.

Summary of the invention

The invention provides a kind of noncontact excitation multi-dimensional vibration energy collecting device, to solve, existing Blast Furnace Top Gas Recovery Turbine Unit (TRT) natural frequency is high, large-amplitude vibration damage, cannot the problems such as multi-direction vibrational energy be collected.

The embodiment that the present invention adopts is: on housing, end face and bottom surface are respectively equipped with the Connection Block for fixing piezoelectric vibrator, and this piezoelectric vibrator is screwed on described Connection Block; Described piezoelectric vibrator is by metal substrate and piezoelectric chip is bonding forms, and its end is provided with magnet; Housing upper end face is provided with extension spring, bottom surface is provided with stage clip, described extension spring and the other end of stage clip link with mass respectively, surrounding's embedded magnet of described mass; The magnet of described piezoelectric vibrator end is mounted opposite with the like pole of the magnet be embedded on mass.

In one embodiment of the present invention, the length being fixed on the piezoelectric vibrator on housing on end face and bottom surface is unequal.

In one embodiment of the present invention, the piezoelectric vibrator quantity be installed on housing on end face and bottom surface is respectively 1-20.

In one embodiment of the present invention, the piezoelectric vibrator quantity be installed on housing on end face and bottom surface is respectively 4 ~ 12.

In one embodiment of the present invention, the piezoelectric vibrator quantity be installed on housing on end face and bottom surface is respectively 6.

In the present invention, housing, two groups of ends be provided with the cantilever beam piezoelectric vibrators of magnet, mass being inlaid with magnet, two the spring that mass is connected with housing is formed Blast Furnace Top Gas Recovery Turbine Unit (TRT) jointly.In its natural state, mass is transfixion under the effect of spring force and periphery rows of magnets repulsion, is in relative static conditions between mass and each piezoelectric vibrator.When housing is by extraneous either direction vibration, mass position changes, magnet on piezoelectric vibrator and the Distance geometry magnetic field force between the magnet on mass change, thus cause the change of piezoelectric vibrator stress and shape, and convert mechanical energy to electric energy.

Feature of the present invention and advantage are: utilize suspension type mass to install the mode excitation cantilever arm beam piezoelectric vibrator of magnet additional, the vibrational energy collection of any direction can be realized; the Action of Gravity Field of mass self is on spring, and the size of its quality without direct impact on the vibration characteristics of piezoelectric vibrator, is easy to adopt larger quality and Low rigidity spring to reduce the natural frequency of energy collecting device, can realizes low-frequency vibration energy and reclaim; piezoelectric vibrator is longitudinally installed, horizontal direction vibration, and the exciting force of vibration provided by the magnetic force change of magnet on mass, and piezoelectric vibrator is unlikely to be damaged because pitch amplitude is excessive, reliability is high.

Accompanying drawing explanation

Fig. 1 is the structural profile schematic diagram in a preferred embodiment of the present invention under energy collecting device inactive state;

Fig. 2 is the A-A generalized section of Fig. 1;

Fig. 3 is the structural profile schematic diagram in a preferred embodiment of the present invention under energy collecting device up-down vibration state;

Fig. 4 is the structural profile schematic diagram in a preferred embodiment of the present invention under energy collecting device horizontal direction vibrational state.

Embodiment

As shown in Figure 1 and Figure 2,6 are respectively for the piezoelectric vibrator quantity be installed on housing on end face and bottom surface, the upper end face of housing 1 is provided with one group of Connection Block 1 for fixing piezoelectric vibrator 1, bottom surface is provided with one group of Connection Block 2 102 for fixing piezoelectric vibrator 26, and piezoelectric vibrator 1 and piezoelectric vibrator 26 are screwed respectively on Connection Block 1 and Connection Block 2 102; Piezoelectric vibrator 1 is by metal substrate 1 and piezoelectric chip 1 is bonding forms, and end is provided with magnet 1; Piezoelectric vibrator 26 is by metal substrate 2 601 and piezoelectric chip 2 602 is bonding forms, and end is provided with magnet 2 11; The upper end face of housing 1 is provided with extension spring 7, bottom surface is provided with stage clip 4, and the other end of described extension spring 7 and stage clip 4 links with mass 3 respectively, and one group of magnet 35 is inlayed by the surrounding of described mass 3; Be installed on the magnet 1 on piezoelectric vibrator one and be installed on magnet on piezoelectric vibrator two 2 11 and be mounted opposite with the like pole of the magnet 35 be arranged on mass 3.

In the above example, be fixed on that the length of the piezoelectric vibrator on housing on end face and bottom surface is unequal also can complete the present invention.

In its natural state, mass 3 and the magnet 35 be arranged on described mass are in a certain equilbrium position, keep relative static conditions between described mass and each piezoelectric vibrator.When housing 1 is by extraneous either direction vibration, the position of mass 3 and magnet 35 changes, then be installed on the distance between the magnet 35 on magnet 1 on piezoelectric vibrator and magnet 2 11 and mass 3 and the repulsive force between each magnet changes, thus make the change of piezoelectric vibrator stress and shape, and convert mechanical energy to electric energy.

As shown in Figure 3, the up-down vibration of housing 1 can destroy piezoelectric vibrator 1, relative balance state between piezoelectric vibrator 26 and mass 3: when housing 1 and the piezoelectric vibrator 1 be installed on housing 1 and piezoelectric vibrator 26 vibrate downwards, mass 3 and be installed on magnet 35 on mass 3 because of delayed by inertia force action response, and make that stage clip 4 stretches, extension spring 7 is compressed, and then be that distance between magnet 1 and magnet 35 reduces, repulsive force increases, the repulsive force of increase forces piezoelectric vibrator 1 to the direction flexural deformation away from mass 3; Meanwhile, the distance between magnet 2 11 and magnet 35 increases, repulsive force reduces, and piezoelectric vibrator 6 recovers distortion under the effect of natural resiliency power, namely to the Direction distortion near mass.

As shown in Figure 4, housing 1 vibration in the horizontal direction can destroy piezoelectric vibrator 1, relative balance state between piezoelectric vibrator 26 and mass 3: when housing 1 and the piezoelectric vibrator 1 be installed on housing 1 and piezoelectric vibrator 26 vibrate to the right, mass 3 and be installed on magnet 35 on mass 3 because of delayed by inertia force action response, and stage clip 4 and extension spring 7 are stretched, magnet 1 in Fig. 4 on the piezoelectric vibrator of left side and the distance between the magnet 55 on magnet 2 11 and mass 3 reduce, repulsive force increases, thus make left side piezoelectric vibrator 1 and piezoelectric vibrator 26 to the direction flexural deformation away from mass 3, i.e. flexural deformation left, simultaneously, magnet 1 in Fig. 4 on the piezoelectric vibrator of right side and the distance between the magnet 55 on magnet 2 11 and mass 3 increase, repulsive force reduces, then in Fig. 4, right side piezoelectric vibrator 1 and piezoelectric vibrator 26 recover distortion under the effect of natural resiliency power, i.e. flexural deformation left.

When the piezoelectric vibrator quantity be installed in the embodiment of the present invention on housing on end face and bottom surface to be respectively in 1-20 except 6, those of ordinary skill in the art still can not spend creative work namely to complete the present invention.

Claims (3)

1. a multi-dimensional vibration energy collecting device for noncontact excitation, it is characterized in that: on housing, end face and bottom surface are respectively equipped with the Connection Block for fixing piezoelectric vibrator, this piezoelectric vibrator is screwed on described Connection Block; Described piezoelectric vibrator is by metal substrate and piezoelectric chip is bonding forms, and its end is provided with magnet; Housing upper end face is provided with extension spring, bottom surface is provided with stage clip, described extension spring and the other end of stage clip link with mass respectively, surrounding's embedded magnet of described mass; The magnet of described piezoelectric vibrator end is mounted opposite with the like pole of the magnet be embedded on mass, the length being fixed on the piezoelectric vibrator on housing on end face and bottom surface is unequal, and the piezoelectric vibrator quantity be installed on housing on end face and bottom surface is respectively 1-20.
2. the multi-dimensional vibration energy collecting device of noncontact according to claim 1 excitation, is characterized in that, the piezoelectric vibrator quantity be installed on housing on end face and bottom surface is respectively 4 ~ 12.
3. the multi-dimensional vibration energy collecting device of noncontact according to claim 2 excitation, is characterized in that, the piezoelectric vibrator quantity be installed on housing on end face and bottom surface is respectively 6.
CN201210088945.4A 2012-03-29 2012-03-29 Multidimensional vibration energy collector capable of realizing non-contact excitement CN102624281B (en)

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CN103683795B (en) * 2012-08-29 2018-05-15 北京嘉岳同乐极电子有限公司 Shaking generating set and its manufacture method
CN103023378B (en) * 2013-01-11 2018-09-28 浙江工商大学 The multi-direction vibration energy collector of broadband
JP6120406B2 (en) * 2013-06-21 2017-04-26 浩平 速水 Power generation system
CN104377993A (en) * 2014-11-25 2015-02-25 北京工业大学 Automatic parameter regulating bistable-state piezoelectric power generation structure
CN104333261B (en) * 2014-11-26 2017-01-11 扬州大学 Tumbler piezoelectric generating set
CN104660099A (en) * 2015-01-30 2015-05-27 合肥工业大学 Tuning fork type piezoelectric resonant cavity wind power generation device
CN105370780A (en) * 2015-10-30 2016-03-02 合肥工业大学 Shock absorber capable of carrying out energy collection
CN105720861B (en) * 2015-12-15 2017-07-07 南昌工程学院 Multi-direction broadband piezoelectric MEMS vibration energy collectors and preparation method thereof
CN105759156A (en) * 2016-04-26 2016-07-13 西安科技大学 Multidirectional vibration energy collecting device performance test system and method thereof
CN106026770B (en) * 2016-06-15 2017-10-20 浙江师范大学 A kind of piezoelectricity electromagnetism combined type self powered supply
CN106059389B (en) * 2016-06-15 2017-11-21 浙江师范大学 A kind of boat-carrying positioner
CN107606018B (en) * 2017-10-19 2019-06-14 西安交通大学 A kind of hourglass shape electromagnetism vibration isolator
CN109269761B (en) * 2018-09-28 2020-10-09 杭州电子科技大学 Self-powered sensor for evaluating rockfall risk

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Owner name: ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID JILI

Effective date: 20150107

CB03 Change of inventor or designer information

Inventor after: Han Junwu

Inventor after: Zhang Xiaoyi

Inventor after: Wang Shuyun

Inventor after: Cheng Guangming

Inventor after: Liu Kun

Inventor after: Zhao Ziqian

Inventor after: Liu Zuoming

Inventor after: Kang Jun

Inventor after: Di Di

Inventor before: Han Junwu

Inventor before: Ling Ronghua

Inventor before: Wang Shuyun

Inventor before: Cheng Guangming

Inventor before: Zeng Ping

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Effective date of registration: 20150107

Address after: 321001 Zhejiang province Jinhua City Yingbin Road No. 688

Applicant after: Zhejiang Normal University

Applicant after: Electric Power Research Institute, State Grid Jilin Power Co., Ltd.

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Address before: 321001 Zhejiang province Jinhua City Yingbin Road No. 688

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Free format text: CORRECT: INVENTOR; FROM: KAN JUNWU LING RONGHUA WANG SHUYUN CHENG GUANGMING CENG PING TO: KAN JUNWUZHANG XIAOYI WANG SHUYUN CHENG GUANGMING LIU KUN ZHAO ZIQIAN LIU ZUOMING KANG JUN ZHAI ZHAI

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