CN202678418U - Improved multilayer piezoelectric transduction element - Google Patents
Improved multilayer piezoelectric transduction element Download PDFInfo
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- CN202678418U CN202678418U CN201220258871.XU CN201220258871U CN202678418U CN 202678418 U CN202678418 U CN 202678418U CN 201220258871 U CN201220258871 U CN 201220258871U CN 202678418 U CN202678418 U CN 202678418U
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- 230000026683 transduction Effects 0.000 title abstract 4
- 238000010361 transduction Methods 0.000 title abstract 4
- 239000000919 ceramic Substances 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 93
- 239000002344 surface layer Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 6
- 230000011218 segmentation Effects 0.000 claims description 6
- 230000010412 perfusion Effects 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 230000010287 polarization Effects 0.000 abstract description 7
- 238000003475 lamination Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002463 transducing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
Provided is an improved multilayer piezoelectric transduction element, comprising multiple layers of piezoelectric ceramics and multiple electrode layers which form a multilayer structure via top-to-bottom lamination. The electrode layers are divided into multiple same segments The electrode layers at the same segment in the odd layers are mutually and electrically connected while the electrodes layers at the same segment in the even number layer are mutually and electrically connected. The improved multilayer piezoelectric transduction element integrates multilayer piezoelectric elements into one body. Based on such a structure, a single piezoelectric element can realize the output and adjustment of the voltage/current through different setup of the polarization mode and direction as well as the selection of connecting modes of the serial connection and parallel connection. When the improved multilayer piezoelectric transduction element is applied to an piezoelectric generating apparatus, multiple transducers are independent without mutual influence. Under the condition that the vibration frequency is equal to or lower than first order inherent vibration frequency, the energy loss resulting from difference of the vibration phases can be effectively avoided.
Description
Technical field
The utility model relates to a kind of piezoelectric energy-conversion element, particularly relates to a kind of multi-layer piezoelectric inverting element.
Background technology
Utilizing piezoelectric effect the mechanical energy such as will vibrate, to be converted into the piezoelectric generating device of electric energy known for people, and the piezoelectric energy-conversion device is the device of core the most wherein.The piezoelectric energy-conversion device normally is made of as depicted in figs. 1 and 2 substrate 1 and the piezoelectric energy-conversion element 2 that sticks on substrate 1 single or double, when substrate 1 vibration, 2 of piezoelectric energy-conversion elements produce electric energy because of piezoelectric effect, these electric energy are utilized or collect by direct output and store.Existing piezo-electric generating scheme is carried out the adjustment of output voltage and electric current by the connection between a plurality of piezoelectric energy-conversion elements 2, but because the vibration phase of these piezoelectric energy-conversion elements 2 is not identical, the electric energy loss of adopting a plurality of piezoelectric energy-conversion elements 2 to connect in the process of the adjustment of carrying out output voltage and electric current is larger, so far still without desirable solution.
At present, there is a kind of multilayer inverting element, but its concrete structure and principle application reference people's formerly patent application CN102208526A.Yet, the technical problem underlying that this multilayer inverting element solves is how to reduce driving voltage or increase responsive bandwidth, be that it is to solve the problem of electric energy in the mechanical energy transfer process in essence, do not solve the electric energy loss problem that existing piezoelectric energy-conversion element exists owing to the difference of vibration phase in the piezoelectric generator thereby do not relate to being applied to when mechanical energy is converted to electric energy.
The utility model content
The technical problems to be solved in the utility model provides a kind of multi-layer piezoelectric inverting element, it can carry out the adjustment of output voltage and electric current separately, and equal first natural frequency or be lower than under the condition of element single order eigentone in vibration frequency, can also solve use multi-transducer spare piezoelectric generating device because the energy loss problem that a plurality of piezoelectric energy-conversion vibration of element phase place differences cause.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of improved multi-layer piezoelectric inverting element, this multi-layer piezoelectric inverting element integral body is strip, comprise the sandwich construction that multilayer piezoelectric ceramic and multi-layered electrode layer stack gradually from top to bottom, these electrode layers are separated into identical some sections, the electrode layer at same section that is positioned at odd-level is electrically connected mutually, and the electrode layer at same section that is positioned at even level is electrically connected mutually.Because strip shape structure is with first natural frequency or when being lower than the frequency vibration of first natural frequency, the distortion of all the transducing sections in the piezoelectric energy-conversion element all is homophase, and the signal of telecommunication output of all transducing sections also is homophase.
As improvement of the technical scheme, same section the electrode layer that is positioned at same section electrode layer of even level and the is positioned at odd-level segment distance that staggers mutually, and be positioned at same section electrode layer of even level all in same vertical zone, be positioned at same section electrode layer of odd-level all in same vertical zone.
It is to realize by perfusion conducting medium in the through hole of inside setting that described electrode layer is electrically connected mutually.
As further improvement in the technical proposal, the polarised direction of adjacent two layers is opposite in the described multilayer piezoelectric ceramic.
As further improvement in the technical proposal, last layer and the basecoat of described sandwich construction all are electrode layers of segmentation.
As further improvement in the technical proposal, some segment electrode layers of the described the superiors have been electrically connected mutually and have been used as an output, and described undermost some segment electrode layers have been electrically connected mutually and have been used as an output.
As further improvement in the technical proposal, the electrode layer of the described the superiors is electrically connected successively with undermost electrode layer, is positioned at the electrode layer of the superiors of the undermost electrode layer of an end and the other end as two outputs.
As further improvement in the technical proposal, sintering has pottery protection surface layer on the surface of the two-layer electrode layer of this last layer and/or basecoat.
As further improvement in the technical proposal, the segmentation of described pottery protection surface layer covers on the electrode layer surface of each section.
As further improvement in the technical proposal, described pottery protection surface layer integral body covers on the electrode layer surface.
With respect to prior art, the beneficial effects of the utility model are: the utility model is integrated as a whole a plurality of multilayer piezoelectric elements, based on this structure, by the setting of different polarization modes, direction and the selection of series-parallel connected mode, on single piezoelectric element, can carry out the output of voltage or electric current, adjust.Like this, the utility model is in being applied to piezoelectric generating device the time, equal first natural frequency or be lower than under the condition of single order eigentone in the vibration frequency of this multi-layer piezoelectric inverting element, a plurality of energy transducers in this multi-layer piezoelectric inverting element are both separate, again can in phase vibration and output electrical signals, thus can effectively avoid because the energy loss that the vibration phase difference causes.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use was done simple declaration during the below will describe embodiment:
Fig. 1 is the structural representation of piezoelectric energy-conversion device in the prior art;
Fig. 2 is the structural representation of another kind of piezoelectric energy-conversion device in the prior art;
Fig. 3 is the structural representation of the utility model embodiment;
Fig. 4 is a kind of polarization and the connection mode schematic diagram of embodiment among Fig. 3;
Fig. 5 is another kind polarization and the connection mode schematic diagram of embodiment among Fig. 3.
Embodiment
Be clearly and completely described below with reference to embodiment and the accompanying drawing technique effect to design of the present utility model, concrete structure and generation, to understand fully the purpose of this utility model, feature and effect.
Fig. 3 shows the embodiment of piezoelectric energy-conversion device provided by the utility model, this multi-layer piezoelectric inverting element integral body is strip, it comprises the sandwich construction 20 that multilayer piezoelectric ceramic 3 and multi-layered electrode layer 4 stack gradually from top to bottom, these electrode layers 4 are separated into identical some sections, the electrode layer 4 at same section that is positioned at odd-level is electrically connected mutually, and the electrode layer 4 at same section that is positioned at even level is electrically connected mutually.Preferably, last layer and the basecoat of sandwich construction 20 all are electrode layers 4 of segmentation, for example, as shown in Figure 3, piezoelectric ceramic 3 is stacked being of five storeys altogether, therefore, interlayer adds that upper and lower surface has 6 layers of electrode layer 4 altogether, and these electrode layers 4 are all divided for 4 sections.Based on said structure, by the different polarization modes of piezoelectric ceramic 3, the setting of direction and the selection of series-parallel connected mode, on single piezoelectric element, can carry out the output of voltage or electric current, adjust, like this, when specifically being applied in the piezoelectric generating device, a plurality of energy transducers in the piezoelectric generating device are separate and be independent of each other, and can effectively avoid because the energy loss that the vibration phase difference causes.
In conjunction with Fig. 4, the polarised direction of adjacent two layers is opposite in the piezoelectric ceramic 3 of multilayer, direction polarization such as arrow indication among the figure, and the connected mode that at this moment adopts is: some segment electrode layers 4 of uppermost surface have been electrically connected mutually and have been used as the first output 41, some segment electrode layers 4 on orlop surface have been electrically connected mutually and have been used as the second output 42, formation is connected in parallel, thereby obtains larger electric current output.
In conjunction with Fig. 5, the polarised direction of adjacent two layers is opposite in the piezoelectric ceramic 3 of multilayer, direction polarization such as arrow indication among the figure, and the connected mode that at this moment adopts is: the electrode layer 4 of described uppermost surface is electrically connected successively with the electrode layer 4 on orlop surface, be arranged in the electrode layer 4 of electrode layer 4 and the uppermost surface of figure right-hand member on orlop surface of left end as two outputs 43,44, formation is connected in series, thereby obtains larger Voltage-output.
In conjunction with Fig. 3 to Fig. 5, in the present embodiment, preferably, same section the electrode layer 4 that is positioned at same section the electrode layer 4 of even level and the is positioned at odd-level segment distance that staggers mutually, and be positioned at same section electrode layer 4 of even level all in same vertical zone, be positioned at same section electrode layer 4 of odd-level all in same vertical zone.Like this, can realize easily the electrical connection between same section electrode layer 4 of odd-level and even level.More preferably, in the present embodiment, it is the through hole 5 interior perfusion conducting mediums realizations that arrange by inside that electrode layer 4 is electrically connected mutually.
For the effective piezoelectric element of protection the present embodiment, sintering has pottery protection surface layer on the surface of the two-layer electrode layer 4 of this last layer and/or basecoat.Pottery protection surface layer can be that segmentation covers on the electrode layer surface of each section, also can be that integral body covers on the electrode layer surface.
Certainly, the invention is not limited to above-mentioned execution mode, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite of the utility model spirit, the modification that these are equal to or replacement all are included in the application's claim limited range.
Claims (10)
1. improved multi-layer piezoelectric inverting element, it is characterized in that: this multi-layer piezoelectric inverting element integral body is strip, comprise the sandwich construction that multilayer piezoelectric ceramic and multi-layered electrode layer stack gradually from top to bottom, these electrode layers are separated into identical some sections, the electrode layer at same section that is positioned at odd-level is electrically connected mutually, and the electrode layer at same section that is positioned at even level is electrically connected mutually.
2. improved multi-layer piezoelectric inverting element according to claim 1, it is characterized in that: same section the electrode layer that is positioned at same section electrode layer of even level and the is positioned at odd-level segment distance that staggers mutually, and be positioned at same section electrode layer of even level all in same vertical zone, be positioned at same section electrode layer of odd-level all in same vertical zone.
3. improved multi-layer piezoelectric inverting element according to claim 1 and 2 is characterized in that: it is that the perfusion conducting medium is realized in the through hole that arranges by inside that described electrode layer is electrically connected mutually.
4. improved multi-layer piezoelectric inverting element according to claim 1 and 2, it is characterized in that: the polarised direction of adjacent two layers is opposite in the described multilayer piezoelectric ceramic.
5. improved multi-layer piezoelectric inverting element according to claim 4, it is characterized in that: last layer and the basecoat of described sandwich construction all are electrode layers of segmentation.
6. improved multi-layer piezoelectric inverting element according to claim 5, it is characterized in that: some segment electrode layers of the described the superiors have been electrically connected mutually and have been used as an output, and described undermost some segment electrode layers have been electrically connected mutually and have been used as an output.
7. improved multi-layer piezoelectric inverting element according to claim 5, it is characterized in that: the electrode layer of the described the superiors is electrically connected successively with undermost electrode layer, is positioned at the electrode layer of the superiors of the undermost electrode layer of an end and the other end as two outputs.
8. described improved multi-layer piezoelectric inverting element according to claim 5 is characterized in that: sintering has pottery protection surface layer on the surface of the two-layer electrode layer of this last layer and/or basecoat.
9. improved multi-layer piezoelectric inverting element according to claim 8 is characterized in that: the segmentation of described pottery protection surface layer covers on the electrode layer surface of each section.
10. improved multi-layer piezoelectric inverting element according to claim 8 is characterized in that: described pottery protection surface layer integral body covers on the electrode layer surface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220258871.XU CN202678418U (en) | 2012-06-01 | 2012-06-01 | Improved multilayer piezoelectric transduction element |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201220258871.XU CN202678418U (en) | 2012-06-01 | 2012-06-01 | Improved multilayer piezoelectric transduction element |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199733A (en) * | 2013-03-22 | 2013-07-10 | 北京大学 | Piezoelectric actuator and manufacturing method thereof |
| CN110546776A (en) * | 2017-04-17 | 2019-12-06 | 锐迪科微电子（上海）有限公司 | MEMS piezoelectric transducer for optimizing capacitance shape |
| CN110989841A (en) * | 2016-06-20 | 2020-04-10 | 苹果公司 | Partial and/or encapsulated haptic actuators and elements |
| CN111064387A (en) * | 2020-01-06 | 2020-04-24 | 南方科技大学 | Adaptive energy harvester |
-
2012
- 2012-06-01 CN CN201220258871.XU patent/CN202678418U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199733A (en) * | 2013-03-22 | 2013-07-10 | 北京大学 | Piezoelectric actuator and manufacturing method thereof |
| CN103199733B (en) * | 2013-03-22 | 2015-06-10 | 北京大学 | Piezoelectric actuator and manufacturing method thereof |
| CN110989841A (en) * | 2016-06-20 | 2020-04-10 | 苹果公司 | Partial and/or encapsulated haptic actuators and elements |
| CN110989841B (en) * | 2016-06-20 | 2021-10-15 | 苹果公司 | Partial and/or encapsulated haptic actuators and elements |
| CN110546776A (en) * | 2017-04-17 | 2019-12-06 | 锐迪科微电子（上海）有限公司 | MEMS piezoelectric transducer for optimizing capacitance shape |
| CN110546776B (en) * | 2017-04-17 | 2023-04-18 | 锐迪科微电子（上海）有限公司 | MEMS piezoelectric transducer for optimizing capacitance shape |
| CN111064387A (en) * | 2020-01-06 | 2020-04-24 | 南方科技大学 | Adaptive energy harvester |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG AUDIOWELL ELECTRONICS CO., LTD. Free format text: FORMER NAME: GUANGZHOU PANYU AODIWEI ELECTRONIC CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 511400, Dongsheng Industrial Zone, east ring street, Guangzhou, Guangdong, Panyu District 9 Patentee after: Prestige sensing Science and Technology Co., Ltd. of Guangdong Audi Address before: 511400, Dongsheng Industrial Zone, east ring street, Guangzhou, Guangdong, Panyu District 9 Patentee before: Guangzhou Panyu Aodiwei Electronic Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20130116 |
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| CX01 | Expiry of patent term |