CN209151028U - A kind of combined vibrating energy collecting device based on piezoelectricity and electromagnetic coupling - Google Patents
A kind of combined vibrating energy collecting device based on piezoelectricity and electromagnetic coupling Download PDFInfo
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- CN209151028U CN209151028U CN201821997812.8U CN201821997812U CN209151028U CN 209151028 U CN209151028 U CN 209151028U CN 201821997812 U CN201821997812 U CN 201821997812U CN 209151028 U CN209151028 U CN 209151028U
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- shell
- cantilever beam
- piezoelectric bimorph
- collecting device
- piezoelectricity
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Abstract
The utility model discloses a kind of combined vibrating energy collecting device based on piezoelectricity and electromagnetic coupling, including cover board, sphere, shell, mass block, piezoelectric bimorph cantilever beam, permanent magnet, U-shaped bottom seat and coil, the cover board is located above shell, sphere is located in shell, the housing bottom end face is provided with centre bore, shell is located above U-shaped bottom seat, the piezoelectric bimorph cantilever beam is located on U-shaped bottom seat, its both ends is fixed on U-shaped bottom seat two sides, place mass block in piezoelectric bimorph cantilever beam center upper surface, place permanent magnet in lower surface, the coil is located at U-shaped bottom seat bottom center position.When the energy collecting device is by dynamic excitation, sphere moves in shell, drives mass block and permanent magnet on piezoelectric bimorph cantilever beam to vibrate up and down, causes magnetic flux in piezoelectric bimorph cantilever beam deflection and coil to change, to generate induced voltage.The utility model structure is simple, and using multiple kinds of energy transform mode, energy acquisition utilization rate is high.
Description
Technical field
The utility model relates to energy technology fields, and in particular to a kind of combined vibrating based on piezoelectricity and electromagnetic coupling
Energy collecting device can propose energy conversion effect simultaneously using the vibrational energy in piezoelectric effect and galvanomagnetic-effect acquisition environment
Rate.
Background technique
In recent years, wireless sensor has been widely used for industrial circle, and powering is the bottleneck problem for restricting its application
One of.At present, the power supply of wireless sensor mainly uses battery.Due to the restricted lifetime of battery, needing to regularly replace could be protected
It demonstrate,proves wireless sensor to work normally, not only heavy workload, cost are also very high for this；In addition in many applications, wireless sensor
Node be often installed in toxic, radiation etc. in adverse circumstances, replacement battery is extremely inconvenient, or even can not.Due to these limits
System, the method for supplying power that researcher is look for a kind of alternative long-life are applied in wireless sensor,
Middle one kind method very concerned is exactly to obtain electric energy from the sustained vibration energy in ambient enviroment, i.e., is adopted using vibrational energy
Storage carries out vibration energy harvesting.Currently, the working method that the energy harvester of oscillatory type mainly uses has electromagnetic type, electrostatic
Formula, piezoelectric type and magnetostriction type etc., it is most of based on the energy harvester of vibration only with single vibration energy harvesting side
Formula, efficiency of energy collection are low.
Utility model content
The utility model proposes a kind of while utilizing piezoelectric effect for deficiency present in existing energy collecting device
Vibrational energy in galvanomagnetic-effect acquisition environment, improves the efficiency and practicability of energy collecting device.
What the technical solution of the utility model was realized in.
A kind of combined vibrating energy collecting device based on piezoelectricity and electromagnetic coupling, including cover board, sphere, shell, quality
Block, piezoelectric bimorph cantilever beam, permanent magnet, U-shaped bottom seat and coil, the cover board are located above shell, and sphere is located in shell, institute
It states housing bottom end face and is provided with centre bore, shell is located above U-shaped bottom seat, and the piezoelectric bimorph cantilever beam is located on U-shaped bottom seat,
Its both ends is fixed on U-shaped bottom seat two sides, and upper and lower two surface of piezoelectric bimorph cantilever beam is pasted with piezoelectric ceramics, and piezoelectricity is double
Mass block is placed in brilliant cantilever beam center upper surface, and permanent magnet is placed in lower surface, and the coil is located at U-shaped bottom seat bottom center
Position.When the vibration energy collector is motivated by extraneous vibration, sphere moves in shell, and quality is passed through in moving process
The convex portion of block drives mass block and permanent magnet on piezoelectric bimorph cantilever beam to vibrate up and down, one side piezoelectric bimorph cantilever
Beam deflection causes piezoelectric ceramics deformation and generates induced voltage, and another aspect permanent magnet during the motion, send out by the magnetic field of surrounding
Changing causes magnetic flux in coil to change and generate induced voltage, will be collected using suitable energy management circuit
Voltage collect be subject to using.
The mass block, permanent magnet and hub of a spool axis are located on same vertical axis.
There is convex portion in the mass block upper end, and convex shape is chosen as triangle, semicircle or rectangle, preferably half
Circular configuration.
The mass block convex portion is located in housing bottom centre bore, and is higher than housing bottom end face, mass block lower end
Part is optional to be square or cylindrical structure, preferably square structure.
The permanent magnet uses Nd-Fe-B permanent magnet, and planform is chosen as cylinder, and circular ring shape or rectangular is preferably round
Cylindricality permanent magnet.
The coil is spiral coil, and multiturn may be selected in the number of turns, and material is by conductive metal copper, silver or aluminum
At preferred copper product.
The piezoelectric bimorph cantilever beam includes metal substrate and four piezoelectric ceramics；Piezoelectric ceramics passes through high strength bond glue
After hot setting, the upper and lower surfaces of the metal substrate of piezoelectric bimorph cantilever beam are glued respectively to, each of which surface
Upper each two panels piezoelectric ceramics, and metal substrate is identical with side direction piezoelectric ceramics size, polarization direction is identical, different side direction pressures
The size of electroceramics is identical, polarization direction is opposite.
The cover board, shell and U-shaped bottom seat are made of non-magnet material, and preferred material is plastics.
In the presence of the utility model solves the problems, such as technical background, there is following gain effect.
A kind of combined vibrating energy collecting device based on piezoelectricity and electromagnetic coupling, structure are simple and convenient to operate, processing system
Cost is relatively low for work, can be simultaneously using the vibrational energy in galvanomagnetic-effect and piezoelectric effect acquisition environment, and energy conversion efficiency is high.
Detailed description of the invention
Fig. 1 is the utility model installation diagram.
Fig. 2 is the utility model configuration schematic diagram.
Fig. 3 is the utility model section view.
Description of symbols.
1. cover board, 2. spheres, 3. shells, 4. mass blocks, 5. piezoelectric bimorph cantilever beams, 51. metal substrates, 52. piezoelectricity pottery
Porcelain, 6. permanent magnets, 7.U type pedestal, 8. coils.
Specific embodiment
The technical solution of the utility model is described in detail with reference to the accompanying drawing.
As shown in Figure 1, Figure 2 and Figure 3, a kind of combined vibrating energy collecting device based on piezoelectricity and electromagnetic coupling, including
Cover board (1), sphere (2), shell (3), mass block (4), piezoelectric bimorph cantilever beam (5), permanent magnet (6), U-shaped bottom seat (7) and line
It encloses (8), the cover board (1) is located above shell (3), and sphere (2) is located in shell (3), and shell (3) bottom end face is provided with
Centre bore, shell (3) are located above U-shaped bottom seat (7), and the piezoelectric bimorph cantilever beam (5) is located on U-shaped bottom seat (7), both ends
U-shaped bottom seat (7) two sides are fixed on, upper and lower two surface of piezoelectric bimorph cantilever beam (5) is pasted with piezoelectric ceramics (52), pressure
Mass block (4) are placed in electrical twining cantilever beam (5) center upper surface, and permanent magnet (6) are placed in lower surface, coil (8) position
In U-shaped bottom seat (7) bottom center position.When the vibration energy collector is motivated by extraneous vibration, sphere (2) is in shell
(3) it is moved in, the convex portion of mass block (4) is passed through in moving process, drive the mass block on piezoelectric bimorph cantilever beam (5)
(4) it is vibrated up and down with permanent magnet (6), one side piezoelectric bimorph cantilever beam (5) bending causes piezoelectric ceramics (52) deformation and generates
Induced voltage, during the motion, the magnetic field of surrounding changes causes coil (8) interior magnetic flux to another aspect permanent magnet (6)
Change and generate induced voltage, collected voltage collected using suitable energy management circuit be subject to using.
In the present embodiment, selected sphere (2) is the solid aluminum alloy sphere of diameter 10mm, and selected permanent magnet (6) is straight
Diameter 6mm, the cylindrical body of a height of 5mm, selected piezoelectric ceramics (52) are that four sizes are identical, and length is respectively 16mm, 13mm and
The thin rectangular parallelepiped structure of 0.3mm, selected mass block (4) convex portion are the semi-circular structure that three diameters are 2mm, mass block (4)
End portion is the cube structure of side length 6mm.
Claims (6)
1. a kind of combined vibrating energy collecting device based on piezoelectricity and electromagnetic coupling, it is characterised in that: including cover board (1), ball
Body (2), shell (3), mass block (4), piezoelectric bimorph cantilever beam (5), permanent magnet (6), U-shaped bottom seat (7) and coil (8), it is described
Cover board (1) is located above shell (3), and sphere (2) is located in shell (3), and shell (3) bottom end face is provided with centre bore, shell
Body (3) is located above U-shaped bottom seat (7), and the piezoelectric bimorph cantilever beam (5) is located on U-shaped bottom seat (7), and both ends are fixed on U-shaped
Pedestal (7) two sides, upper and lower two surface of piezoelectric bimorph cantilever beam (5) are pasted with piezoelectric ceramics (52), piezoelectric bimorph cantilever
Mass block (4) are placed in beam (5) center upper surface, and permanent magnet (6) are placed in lower surface, and the coil (8) is located at U-shaped bottom seat
(7) bottom center position.
2. a kind of combined vibrating energy collecting device based on piezoelectricity and electromagnetic coupling as described in claim 1, feature exist
In: the mass block (4), permanent magnet (6) and coil (8) central axis are located on same vertical axis.
3. a kind of combined vibrating energy collecting device based on piezoelectricity and electromagnetic coupling as described in claim 1, feature exist
In: there is convex portion in mass block (4) upper end, and convex shape is chosen as triangle, semicircle or rectangle；Mass block
(4) convex portion is located in shell (3) bottom centre hole, and is higher than shell (3) bottom end face, and mass block (4) end portion can
It is selected as square or cylindrical structure.
4. a kind of combined vibrating energy collecting device based on piezoelectricity and electromagnetic coupling as described in claim 1, feature exist
In: the shape of the permanent magnet (6) is chosen as cylindrical, circular ring shape or square structure.
5. a kind of combined vibrating energy collecting device based on piezoelectricity and electromagnetic coupling as described in claim 1, feature exist
In: the piezoelectric bimorph cantilever beam (5) includes metal substrate (51) and four piezoelectric ceramics (52)；Piezoelectric ceramics (52) passes through height
Strength cementitious glue after hot setting, be glued respectively to the metal substrate (51) of piezoelectric bimorph cantilever beam (5) upper surface and
Lower surface, each two panels piezoelectric ceramics (52) on each of which surface, and metal substrate (51) is the same as side direction piezoelectric ceramics (52) size
It is identical, polarization direction is identical, the size of different side direction piezoelectric ceramics (52) is identical, polarization direction is opposite.
6. a kind of combined vibrating energy collecting device based on piezoelectricity and electromagnetic coupling as described in claim 1, feature exist
In: the coil (8) is spiral coil, and multiturn may be selected in the number of turns, and material is made of conductive metal copper, silver, aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821997812.8U CN209151028U (en) | 2018-11-30 | 2018-11-30 | A kind of combined vibrating energy collecting device based on piezoelectricity and electromagnetic coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821997812.8U CN209151028U (en) | 2018-11-30 | 2018-11-30 | A kind of combined vibrating energy collecting device based on piezoelectricity and electromagnetic coupling |
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| CN209151028U true CN209151028U (en) | 2019-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821997812.8U Expired - Fee Related CN209151028U (en) | 2018-11-30 | 2018-11-30 | A kind of combined vibrating energy collecting device based on piezoelectricity and electromagnetic coupling |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429862A (en) * | 2019-08-09 | 2019-11-08 | 哈尔滨工业大学 | A kind of adjustable broadband spoke type piezoelectric energy collecting device |
| CN112135262A (en) * | 2020-09-29 | 2020-12-25 | 中北大学 | Tunnel personnel positioning system based on energy collection and ZigBee |
| CN114414035A (en) * | 2022-01-21 | 2022-04-29 | 芯元(浙江)科技有限公司 | Piezoelectric sensor calibration device and method and vibration sensor |
-
2018
- 2018-11-30 CN CN201821997812.8U patent/CN209151028U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429862A (en) * | 2019-08-09 | 2019-11-08 | 哈尔滨工业大学 | A kind of adjustable broadband spoke type piezoelectric energy collecting device |
| CN112135262A (en) * | 2020-09-29 | 2020-12-25 | 中北大学 | Tunnel personnel positioning system based on energy collection and ZigBee |
| CN114414035A (en) * | 2022-01-21 | 2022-04-29 | 芯元(浙江)科技有限公司 | Piezoelectric sensor calibration device and method and vibration sensor |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190723 Termination date: 20191130 |