CN202524322U - Vertical and horizontal compound excitation type piezoelectric energy harvester - Google Patents
Vertical and horizontal compound excitation type piezoelectric energy harvester Download PDFInfo
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- CN202524322U CN202524322U CN2012201261429U CN201220126142U CN202524322U CN 202524322 U CN202524322 U CN 202524322U CN 2012201261429 U CN2012201261429 U CN 2012201261429U CN 201220126142 U CN201220126142 U CN 201220126142U CN 202524322 U CN202524322 U CN 202524322U
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- piezoelectric vibrator
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- 230000005284 excitation Effects 0.000 title abstract description 7
- 150000001875 compounds Chemical class 0.000 title abstract 4
- 238000009434 installation Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003534 oscillatory effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241000283153 Cetacea Species 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model relates to a vertical and horizontal compound excitation type piezoelectric energy harvester and belongs to the technical field of new energy sources and power generation. An upper casing and a lower casing are connected through screws. A group of piezoelectric vibrators are arranged and clamped between the upper casing and the lower casing. The free ends of the piezoelectric vibrators are provided with magnets. A ball pin is connected with an inertia block through a screw rod arranged on the inertia block. A first annular magnet, a sleeve and a second annular magnet are sequentially sheathed on the screw rod. The magnets arranged on the piezoelectric vibrators, and the first annular magnet and the second annular magnet arranged on the screw rod are arranged in such a way that the homopolar magnetic poles thereof are arranged close to each other. Due to the adoption of the vertical and horizontal compound excitation type piezoelectric energy harvester, the vibration energy recovery in the vertical direction and in any horizontal direction can be realized. The vertical and horizontal compound excitation type piezoelectric energy harvester is applicable to low-frequency and great-amplitude vibration environment and is high in reliability.
Description
Technical field
The utility model belongs to new forms of energy and technical field of power generation, is specifically related to a kind of piezoelectric harvester, for portable micropower electronic product and wireless sensing monitoring system etc. provide real-time energy supply.
Background technology
The microminiature energy accumulator that utilizes piezoceramic material to reclaim ambient vibration energy structure is considered to portable micropower electronic product and the real-time self-powered effective means of long-range heeling-in sensing and monitoring system.Though some type piezoelectric harvester has obtained to use in reality, aspects such as the adaptive capacity of its vibration environment, reliability and energy conversion efficiency also have bigger limitation, are unfavorable for further applying of piezoelectric vibration prisoner's ability technology.
For the oscillatory type piezoelectric harvester, only, the piezoelectric vibrator natural frequency can reach higher generating capacity and energy conversion efficiency when equating with the ambient vibration frequency.But higher because of the resonance frequency of piezoelectric vibrator self, be generally hundreds of even a few KHz, and the ambient vibration frequency is generally tens hertz even only have several hertz, it is not remarkable therefore directly to utilize piezoelectric vibrator to collect the effect of environment vibrational energy.For this reason; Need in the cantilever beam piezoelectric vibrators end or the concentrated inertial mass of circular piezoelectric oscillator center installation; Its drawback is to work as the inertial mass of being installed when big, even piezoelectric vibrator has just produced moderate finite deformation when non operating state, in the work very easily because of being out of shape excessive the damage.In addition; Vibration source in the reality under the non-structure environment has multidirectional and its direction of vibration and amplitude size and also has a time variation; With the automobile in advancing is example; Its vibration source comprises that the extensional vibration that the road injustice causes, porpoise, the traffic direction drift that velocity variations causes cause transverse vibration etc., and has vibration coupling and Overlay between above-mentioned each vibration source, and its actual direction of vibration is also uncertain.
Summary of the invention
The utility model provides a kind of formula of complex incentive in length and breadth piezoelectric harvester, to solve the problem that the existing oscillatory type piezoelectric harvester degree of freedom is limited, be inappropriate for multi-direction vibrational energy recovery.
The technical scheme that the utility model is taked is: upper shell is connected through screw with lower house; Clamping has one group of piezoelectric vibrator between said upper shell and lower house; Said piezoelectric vibrator is by metal substrate and piezoelectric chip is bonding forms; The free end of said piezoelectric vibrator is equipped with magnet, and the ball guide is installed on described lower house, in the said ball guide ball pin is installed; Said ball pin is connected through the screw rod on the inertial mass with inertial mass; On described screw rod, be set with first annular magnet, sleeve pipe and second annular magnet successively, described first annular magnet, sleeve pipe and second annular magnet are crimped between ball pin and the inertial mass, on described ball pin, are with spring; Said spring is crimped between the ball guide and second annular magnet, describedly is installed on magnet and the like pole that is installed in first annular magnet and second annular magnet on the screw rod on the piezoelectric vibrator near installation.
In the utility model, the ball pin can be done the swing of any direction in the ball guide.Under nature, inertial mass is in the equilbrium position under the effect of repulsive force between the thrust of spring and each magnet, be in relative static conditions between the magnet of piezoelectric vibrator end and first annular magnet on the screw rod and second annular magnet; When energy accumulator receives extraneous vertical vibration excitation or arbitrary horizontal direction vibrational excitation, piezoelectric vibrator all will produce flexural deformation and convert mechanical energy to electric energy.
The characteristics and the advantage of the utility model are:
can realize that the vibrational energy that vertically reaches arbitrary horizontal direction reclaims; Vibration environment and reliability that
is suitable for low frequency and large amplitude are high; Reason is: during extensional vibration; The magnet of piezoelectric vibrator end is suspended in the middle of two annular magnets on the screw rod; Repulsive force between the magnet has buffering and position-limiting action, can adopt bigger end magnet to reduce the resonance frequency of piezoelectric vibrator; In horizontal direction when excitation,, the deflection of exciting force and piezoelectric vibrator is only relevant with the pendulum angle and the magnetic field intensity of screw rod, and reason environment amplitude is excessive and damage yet for piezoelectric vibrator.
Description of drawings
Fig. 1 is that energy accumulator is in the structural profile sketch map under the nature inactive state in preferred embodiment of the utility model;
Fig. 2 is the A-A generalized section of Fig. 1;
Fig. 3 is the structural representation of metal substrate in preferred embodiment of the utility model;
Fig. 4 is the structural profile sketch map during the energy accumulator up-down vibration in preferred embodiment of the utility model;
Fig. 5 is the structural profile sketch map when the energy accumulator horizontal direction is vibrated in preferred embodiment of the utility model.
Embodiment:
Like Fig. 1, Fig. 2, shown in Figure 3, upper shell 1 and lower house 11 are connected through screw, and clamping has one group of piezoelectric vibrator 6 between said upper shell 1 and lower house 11; Said piezoelectric vibrator 6 is by metal substrate 6-1 and piezoelectric chip 6-2 is bonding forms, and the free end of said piezoelectric vibrator 6 is equipped with magnet 5; On described lower house 11, ball guide 10 is installed, in the said ball guide 10 ball pin 8 is installed; Said ball pin 8 is connected through the screw rod 2-1 on the inertial mass 2 with inertial mass 2; On described screw rod 2-1, be set with first annular magnet 3, sleeve pipe 4 and second annular magnet 7 successively, described first annular magnet 3, sleeve pipe 4 and second annular magnet 7 are crimped between ball pin 8 and the inertial mass 2; On described ball pin 8, be with spring 9, said spring 9 is crimped between the ball guide 10 and second annular magnet 7; Describedly be installed on magnet 5 and the like pole that is installed in first annular magnet 3 and second annular magnet 7 on the screw rod 2-1 on the piezoelectric vibrator 6 near installation.
In the utility model, ball pin 8 can be done the swing of any direction in ball guide 10.Under nature, inertial mass 2 is in the equilbrium position under the effect of repulsive force between the thrust of spring 9 and each magnet, be in relative static conditions between first annular magnet 3 on the magnet 5 of piezoelectric vibrator end and the screw rod 2-1 and second annular magnet 7.
As shown in Figure 4, when energy accumulator was done simple vibration up and down reciprocatingly, piezoelectric vibrator 6 was because of receiving its free end magnet 5 inertia force effect up-down vibration; If the environment amplitude is bigger, then magnet 5 is increased by the repulsive force of first annular magnet 3 and second annular magnet 7, thus the deflection of restriction piezoelectric vibrator 6.
As shown in Figure 5; When energy accumulator is made the double vibrations of arbitrary horizontal direction; Inertial mass 2, first annular magnet 3 and second annular magnet 7 will drive ball pin 8 through screw rod 2-1 and rotate; One side of spring 9 is compressed, the opposite side elongation, thereby the distance between the magnet 5 of piezoelectric vibrator end and first annular magnet 3 and second annular magnet 7 changes.In Fig. 5, the distance between the magnet 5 and first annular magnet 3 reduces, repulsive force increases, piezoelectric vibrator 6 downwarpings distortion; In this simultaneously; Distance between the magnet
and second annular magnet 7 reduces, repulsive force increases, and piezoelectric vibrator
is bent upwards distortion; Along with the left and right sides reciprocally swinging of inertial mass 2, piezoelectric vibrator is done reciprocal flexural deformation up and down, and converts mechanical energy to electric energy.
Claims (1)
1. complex incentive formula piezoelectric harvester in length and breadth; It is characterized in that: upper shell is connected through screw with lower house; Clamping has one group of piezoelectric vibrator between said upper shell and lower house, and said piezoelectric vibrator is by metal substrate and piezoelectric chip is bonding forms, and the free end of said piezoelectric vibrator is equipped with magnet; The ball guide is installed on described lower house; In the said ball guide ball pin is installed, said ball pin is connected through the screw rod on the inertial mass with inertial mass, on described screw rod, is set with first annular magnet, sleeve pipe and second annular magnet successively; Described first annular magnet, sleeve pipe and second annular magnet are crimped between ball pin and the inertial mass; On described ball pin, be with spring, said spring is crimped between the ball guide and second annular magnet, describedly is installed on magnet and the like pole that is installed in first annular magnet and second annular magnet on the screw rod on the piezoelectric vibrator near installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201261429U CN202524322U (en) | 2012-03-29 | 2012-03-29 | Vertical and horizontal compound excitation type piezoelectric energy harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201261429U CN202524322U (en) | 2012-03-29 | 2012-03-29 | Vertical and horizontal compound excitation type piezoelectric energy harvester |
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| Publication Number | Publication Date |
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| CN202524322U true CN202524322U (en) | 2012-11-07 |
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| CN2012201261429U Expired - Lifetime CN202524322U (en) | 2012-03-29 | 2012-03-29 | Vertical and horizontal compound excitation type piezoelectric energy harvester |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594205A (en) * | 2012-03-29 | 2012-07-18 | 浙江师范大学 | Vertical and horizontal compound excitation type piezoelectric energy harvester |
| CN104300832A (en) * | 2014-11-10 | 2015-01-21 | 成都思达高科软件有限公司 | Vibration energy acquirer with high acquisition amount |
| CN107395048A (en) * | 2017-08-17 | 2017-11-24 | 浙江师范大学 | A kind of piezoelectric beam energy accumulator of combined type spring leaf indirect excitation |
| CN107453649A (en) * | 2017-08-17 | 2017-12-08 | 浙江师范大学 | A kind of vehicle-mounted energy accumulator of piezoelectric vibrator bend in one direction |
| CN113162472A (en) * | 2021-04-26 | 2021-07-23 | 长春工业大学 | Push type piezoelectric energy harvesting device based on magnetic excitation |
| CN114050740A (en) * | 2021-11-26 | 2022-02-15 | 浙江师范大学 | Monitoring system based on wind energy and vibration energy collection |
-
2012
- 2012-03-29 CN CN2012201261429U patent/CN202524322U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594205A (en) * | 2012-03-29 | 2012-07-18 | 浙江师范大学 | Vertical and horizontal compound excitation type piezoelectric energy harvester |
| CN104300832A (en) * | 2014-11-10 | 2015-01-21 | 成都思达高科软件有限公司 | Vibration energy acquirer with high acquisition amount |
| CN107395048A (en) * | 2017-08-17 | 2017-11-24 | 浙江师范大学 | A kind of piezoelectric beam energy accumulator of combined type spring leaf indirect excitation |
| CN107453649A (en) * | 2017-08-17 | 2017-12-08 | 浙江师范大学 | A kind of vehicle-mounted energy accumulator of piezoelectric vibrator bend in one direction |
| CN107395048B (en) * | 2017-08-17 | 2023-06-02 | 浙江师范大学 | Piezoelectric beam energy harvester indirectly excited by combined spring piece |
| CN113162472A (en) * | 2021-04-26 | 2021-07-23 | 长春工业大学 | Push type piezoelectric energy harvesting device based on magnetic excitation |
| CN113162472B (en) * | 2021-04-26 | 2022-06-17 | 长春工业大学 | Push type piezoelectric energy harvesting device based on magnetic excitation |
| CN114050740A (en) * | 2021-11-26 | 2022-02-15 | 浙江师范大学 | Monitoring system based on wind energy and vibration energy collection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121107 Effective date of abandoning: 20140317 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |