CN201821288U - Piezoelectric energy collecting device - Google Patents
Piezoelectric energy collecting device Download PDFInfo
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- CN201821288U CN201821288U CN2010205767229U CN201020576722U CN201821288U CN 201821288 U CN201821288 U CN 201821288U CN 2010205767229 U CN2010205767229 U CN 2010205767229U CN 201020576722 U CN201020576722 U CN 201020576722U CN 201821288 U CN201821288 U CN 201821288U
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Abstract
The utility model discloses a piezoelectric energy collecting device. The piezoelectric energy collecting device comprises a beam-shaped structural body (3) which is fixed on a vibrating structural body (1) through a fixing cover (2), and a piezoelectric sheet (4) and a movable mass block (5), which are arranged on the beam-shaped structural body (3). In the piezoelectric energy collecting device, one or two ends of a cantilever beam are fixed on the vibrating structural body, the maximum position of the cantilever beam that generates a strain under different resonant frequencies is obtained according to the vibration mode of the cantilever beam, and the piezoelectric sheet is located in the maximum position to absorb the vibration energy in the surrounding environment within a wide frequency range, so as to greatly increase the efficiency of energy collection and conversion. The piezoelectric energy collecting device is applied to the power supply device of the network and wireless communication equipment.
Description
Technical field
The utility model relates to a kind of piezoelectric energy gathering-device, particularly a kind of a kind of device that vibrational energy is converted into electric energy in wide frequency range.
Background technology
Along with the extensive use of wireless device, its powerup issue got more and more people's extensive concerning in the last few years.The piezoelectric energy gathering-device is as a kind of novel miniature power generating device, have simple in structure, caloric value is little, do not have electromagnetic interference, be easy to the miniaturization on processing and fabricating and the implementation structure, advantage such as integrated, is applicable to all kinds of sensings and monitoring system.Piezoelectric energy gathering-device on the market is most of to have only a piezoelectric patches to be arranged on the stiff end of cantilever beam for based on cantilever beam, and harvest energy obtains electric energy from the vibration that its first order resonant causes.Though this collection of energy mode efficient is higher, frequency range is narrower, can't collect the vibrational energy under the higher frequency.Thereby it is wider to develop a kind of frequency range, and power supplying efficiency has the absoluteness meaning than higher novel energy gathering-device.
The utility model content
The purpose of this utility model is, a kind of piezoelectric energy gathering-device is provided.It can collect vibrational energy in wider frequency, improve the collection of energy transformation efficiency.
The technical solution of the utility model: a kind of piezoelectric energy gathering-device comprises through fixed cap being fixed on beam-shaped structure body on the vibrational structure body that the beam-shaped structure body is provided with more than one piezoelectric patches and removable mass.
In the aforesaid piezoelectric energy gathering-device, comprise that an end is fixed on beam-shaped structure body on the vibrational structure body through fixed cap, the upper surface of beam-shaped structure body is provided with 4 piezoelectric patches and a removable mass successively from stiff end.
In the aforesaid piezoelectric energy gathering-device, comprise that two ends are fixed on beam-shaped structure body on the vibrational structure body through fixed cap, the upper surface of beam-shaped structure body is provided with 5 piezoelectric patches successively from left end, and the lower surface of beam-shaped structure body is provided with a removable mass.
In the aforesaid piezoelectric energy gathering-device, described first piezoelectric patches is located at left end, and the distance of second piezoelectric patches and left end is 0.25L-0.30L, and the distance of the 3rd piezoelectric patches and left end is 0.48L-0.52L, the distance of the 4th piezoelectric patches and left end is 0.70L-0.74L, and the 5th piezoelectric patches is located at right-hand member.
In the aforesaid piezoelectric energy gathering-device, described first piezoelectric patches is located at left end, and the distance of second piezoelectric patches and left end is 0.28L, and the distance of the 3rd piezoelectric patches and left end is 0.50L, and the distance of the 4th piezoelectric patches and left end is 0.72L, and the 5th piezoelectric patches is located at right-hand member.
In the aforesaid piezoelectric energy gathering-device, described beam-shaped structure body is the beam-shaped structure body that stainless steel or aluminium constitute.
Compared with prior art, cantilever beam of the present utility model one or both ends are fixed on the vibrational structure body, Mode Shape by the cantilever beam cantilever beam that can draw under the different resonant frequencies to be caused produces the strain maximum position again, one group of piezoelectric patches is set on maximum position, make and to improve the collection of energy transformation efficiency greatly by the vibrational energy that can in very wide frequency range, absorb surrounding environment.The utility model is applied to the power supply device of network and Wireless Telecom Equipment.
Description of drawings
Fig. 1 is the structural representation of embodiment 1 of the present utility model;
Fig. 2 is the structural representation of embodiment 2.
Being labeled as in the accompanying drawing: 1-vibrational structure body, 2-fixed cap, 3-beam-shaped structure body, 4-piezoelectric patches, the removable mass of 5-.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described, but not as the foundation to the utility model restriction.
Embodiment 1: a kind of piezoelectric energy gathering-device, constitute as shown in Figure 1, comprise that an end is fixed on beam-shaped structure body 3 on the vibrational structure body 1 through fixed cap 2, the upper surface of beam-shaped structure body 3 is provided with 4 piezoelectric patches 4 and a removable mass 5 successively from stiff end, the position of described 4 piezoelectric patches be first three the rank Mode Shape by cantilever beam obtain in position that following of different resonant frequencies causes the ground cantilever beam to produce the strain maximum; Described removable mass 5 can be regulated the resonance frequency of vibrational structure body 3.The utility model not only can be from the vibration that causes by first order resonant harvest energy, but also can collect near the vibrational energy that vibration caused second order and the three rank resonance frequencys, thereby can in very wide frequency range, absorb the vibrational energy of surrounding environment, can improve the collection of energy transformation efficiency greatly.
Embodiment 2: a kind of piezoelectric energy gathering-device, constitute as shown in Figure 2, comprise that two ends are fixed on beam-shaped structure body 3 on the vibrational structure body 1 through fixed cap 2, the upper surface of beam-shaped structure body 3 is provided with 5 piezoelectric patches 4 successively from left end, and the lower surface of beam-shaped structure body 3 is provided with a removable mass 5; Described beam-shaped structure body 3 length are L, first piezoelectric patches is located at left end, and the distance of second piezoelectric patches and left end is 0.25L-0.30L, and the distance of the 3rd piezoelectric patches and left end is 0.48L-0.52L, the distance of the 4th piezoelectric patches and left end is 0.70L-0.74L, and the 5th piezoelectric patches is located at right-hand member; Reasonablely be: first piezoelectric patches is located at left end, and the distance of second piezoelectric patches and left end is 0.28L, and the distance of the 3rd piezoelectric patches and left end is 0.50L, and the distance of the 4th piezoelectric patches and left end is 0.72L, and the 5th piezoelectric patches is located at right-hand member.The position of described 5 piezoelectric patches be the preceding second order Mode Shape by cantilever beam obtain in position that following of different resonant frequencies causes the ground cantilever beam to produce the strain maximum; Described removable mass 5 can be regulated the resonance frequency of vibrational structure body 3.The utility model not only can be from the vibration that causes by first order resonant harvest energy, but also can collect near the vibrational energy that vibration caused the second order resonance frequency, thereby can in very wide frequency range, absorb the vibrational energy of surrounding environment, can improve the collection of energy transformation efficiency greatly.
Above-mentioned described beam-shaped structure body 3 is to adopt stainless steel or aluminium to constitute.
The utility model principle is as follows: the beam-shaped structure body is fixed on the vibrational structure body, so that the beam-shaped structure body is along with the vibrational structure body vibrates together, piezoelectric patches is attached to beam-shaped structure body bigger position of strain when single order, second order or three rank modal vibrations, thereby has widened capture range of the present utility model greatly and improved its transformation efficiency; Removable mass is fixed on the beam-shaped structure body, can regulate the resonance frequency of vibrational structure body self.
Claims (6)
1. piezoelectric energy gathering-device is characterized in that: comprise through fixed cap (2) being fixed on beam-shaped structure body (3) on the vibrational structure body (1), beam-shaped structure body (3) is provided with more than one piezoelectric patches (4) and removable mass (5).
2. piezoelectric energy gathering-device according to claim 1, it is characterized in that: comprise that an end is fixed on beam-shaped structure body (3) on the vibrational structure body (1) through fixed cap (2), the upper surface of beam-shaped structure body (3) is provided with 4 piezoelectric patches (4) and a removable mass (5) successively from stiff end.
3. piezoelectric energy gathering-device according to claim 1, it is characterized in that: comprise that two ends are fixed on beam-shaped structure body (3) on the vibrational structure body (1) through fixed cap (2), the upper surface of beam-shaped structure body (3) is provided with 5 piezoelectric patches (4) successively from left end, and the lower surface of beam-shaped structure body (3) is provided with a removable mass (5).
4. piezoelectric energy gathering-device according to claim 3, it is characterized in that: described beam-shaped structure body (3) length is L, first piezoelectric patches is located at left end, the distance of second piezoelectric patches and left end is 0.25L-0.30L, the distance of the 3rd piezoelectric patches and left end is 0.48L-0.52L, the distance of the 4th piezoelectric patches and left end is 0.70L-0.74L, and the 5th piezoelectric patches is located at right-hand member.
5. piezoelectric energy gathering-device according to claim 4, it is characterized in that: described beam-shaped structure body (3) length is L, first piezoelectric patches is located at left end, the distance of second piezoelectric patches and left end is 0.28L, the distance of the 3rd piezoelectric patches and left end is 0.50L, the distance of the 4th piezoelectric patches and left end is 0.72L, and the 5th piezoelectric patches is located at right-hand member.
6. according to the described piezoelectric energy gathering-device of the arbitrary claim of claim 1-5, it is characterized in that: described beam-shaped structure body (3) is the beam-shaped structure body that stainless steel or aluminium constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205767229U CN201821288U (en) | 2010-10-26 | 2010-10-26 | Piezoelectric energy collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205767229U CN201821288U (en) | 2010-10-26 | 2010-10-26 | Piezoelectric energy collecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201821288U true CN201821288U (en) | 2011-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205767229U Expired - Fee Related CN201821288U (en) | 2010-10-26 | 2010-10-26 | Piezoelectric energy collecting device |
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| CN (1) | CN201821288U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104022685A (en) * | 2014-05-23 | 2014-09-03 | 厦门大学 | Frequency-adjustable array type piezoelectric cantilever beam energy harvester and frequency-adjustable array type piezoelectric cantilever beam energy harvesting method |
| CN104065303A (en) * | 2014-05-28 | 2014-09-24 | 哈尔滨工业大学 | Piezoelectric bi-stable state energy collector |
| CN104868783A (en) * | 2015-03-16 | 2015-08-26 | 浙江大学 | Cantilever beam structure-based bridge piezoelectric energy storage device |
| CN105765854A (en) * | 2013-12-12 | 2016-07-13 | 松下知识产权经营株式会社 | Vibration power-generation device, vibration monitoring device and system |
| US9508917B2 (en) | 2011-11-04 | 2016-11-29 | Altenergis Plc | Piezoelectric energy harvesting device or actuator |
| CN108448935A (en) * | 2018-05-02 | 2018-08-24 | 南京邮电大学 | A kind of double class's circular arc type piezoelectric type energy collectors |
| CN108471256A (en) * | 2018-04-19 | 2018-08-31 | 河海大学常州校区 | A kind of bimodulus piezoelectricity oscillating generating set |
| CN110311589A (en) * | 2019-06-11 | 2019-10-08 | 深圳信息职业技术学院 | Cantilevered self-generating device and its manufacturing method |
| WO2024020846A1 (en) * | 2022-07-27 | 2024-02-01 | 深圳市韶音科技有限公司 | Acoustic output device |
-
2010
- 2010-10-26 CN CN2010205767229U patent/CN201821288U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9508917B2 (en) | 2011-11-04 | 2016-11-29 | Altenergis Plc | Piezoelectric energy harvesting device or actuator |
| CN105765854B (en) * | 2013-12-12 | 2017-10-13 | 松下知识产权经营株式会社 | Vibration generating device, vibration monitoring apparatus and system |
| CN105765854A (en) * | 2013-12-12 | 2016-07-13 | 松下知识产权经营株式会社 | Vibration power-generation device, vibration monitoring device and system |
| CN104022685B (en) * | 2014-05-23 | 2017-03-08 | 厦门大学 | The frequency modulation array piezoelectric cantilever prisoner applying to piezoelectric harvester can method |
| CN104022685A (en) * | 2014-05-23 | 2014-09-03 | 厦门大学 | Frequency-adjustable array type piezoelectric cantilever beam energy harvester and frequency-adjustable array type piezoelectric cantilever beam energy harvesting method |
| CN104065303B (en) * | 2014-05-28 | 2016-01-27 | 哈尔滨工业大学 | Piezoelectricity bistable state energy harvester |
| CN104065303A (en) * | 2014-05-28 | 2014-09-24 | 哈尔滨工业大学 | Piezoelectric bi-stable state energy collector |
| CN104868783A (en) * | 2015-03-16 | 2015-08-26 | 浙江大学 | Cantilever beam structure-based bridge piezoelectric energy storage device |
| CN108471256A (en) * | 2018-04-19 | 2018-08-31 | 河海大学常州校区 | A kind of bimodulus piezoelectricity oscillating generating set |
| CN108448935A (en) * | 2018-05-02 | 2018-08-24 | 南京邮电大学 | A kind of double class's circular arc type piezoelectric type energy collectors |
| CN108448935B (en) * | 2018-05-02 | 2024-05-14 | 南京邮电大学 | Double-order arc piezoelectric energy collector |
| CN110311589A (en) * | 2019-06-11 | 2019-10-08 | 深圳信息职业技术学院 | Cantilevered self-generating device and its manufacturing method |
| WO2024020846A1 (en) * | 2022-07-27 | 2024-02-01 | 深圳市韶音科技有限公司 | Acoustic output device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20121026 |