CN112366271A - Integrated piezoelectric transformer capable of realizing capacitive impedance self-compensation - Google Patents
Integrated piezoelectric transformer capable of realizing capacitive impedance self-compensation Download PDFInfo
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- CN112366271A CN112366271A CN202011204897.1A CN202011204897A CN112366271A CN 112366271 A CN112366271 A CN 112366271A CN 202011204897 A CN202011204897 A CN 202011204897A CN 112366271 A CN112366271 A CN 112366271A
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- 239000000919 ceramic Substances 0.000 claims abstract description 54
- 230000010287 polarization Effects 0.000 claims description 6
- 238000005530 etching Methods 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 abstract description 10
- 230000010354 integration Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
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- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/40—Piezoelectric or electrostrictive devices with electrical input and electrical output, e.g. functioning as transformers
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- H—ELECTRICITY
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- H10N30/80—Constructional details
- H10N30/802—Circuitry or processes for operating piezoelectric or electrostrictive devices not otherwise provided for, e.g. drive circuits
- H10N30/804—Circuitry or processes for operating piezoelectric or electrostrictive devices not otherwise provided for, e.g. drive circuits for piezoelectric transformers
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses an integrated piezoelectric transformer capable of realizing capacitive impedance self-compensation, which belongs to the technical field of piezoelectric transformers and comprises a piezoelectric inductor and a piezoelectric transformer, wherein the piezoelectric inductor and the piezoelectric transformer are made of piezoelectric ceramic pieces, electrodes are arranged on the upper surface and the lower surface of each piezoelectric ceramic piece, an output electrode of the piezoelectric inductor is connected with an input electrode of the piezoelectric transformer on the same plane, and a driving signal is input into the piezoelectric transformer through the piezoelectric inductor. The invention does not need to add a traditional inductance element in the driving process, and can realize the capacitive impedance self-compensation of the piezoelectric transformer in a certain frequency range; the non-inductive driving can be well realized, and the working efficiency of the piezoelectric transformer and the driving circuit is improved; the piezoelectric inductor and the piezoelectric transformer are made of the same piece of piezoelectric ceramic, so that integration among piezoelectric structures is realized to a certain extent, and lightweight and miniaturized application of the piezoelectric transformer is guaranteed.
Description
Technical Field
The invention relates to the technical field of piezoelectric transformers, in particular to an integrated piezoelectric transformer capable of realizing capacitive impedance self-compensation.
Background
Nowadays, the human society is closely related to the mobile internet information network, and a large number of electronic products have developed towards the direction of portability, miniaturization and integration at an unprecedented speed, which requires that basic components constituting the electronic products have the characteristics of small volume, light weight, high efficiency, energy conservation, safety, reliability, easy integration and the like.
The transformer is one of the most common basic components in electronic products, and the conventional electromagnetic transformer is difficult to meet the design requirement of high-efficiency integration due to other factors such as structure and material, and has become one of the biggest obstacles hindering miniaturization of electronic products. On the basis of positive and inverse piezoelectric effects, the piezoelectric transformer realizes isolation and conversion between input and output voltages or currents through the electromechanical coupling action between piezoelectric ceramic resonators with two mechanical parts coupled and circuit parts insulated from each other, and has the advantages of small volume, light weight, electromagnetic interference resistance, high conversion efficiency and the like.
Since the concept of piezoelectric transformer proposed by Rosen in the united states in 1954, piezoelectric transformers of different materials, vibration modes and sizes have been developed successively, and have wider and wider application prospects in electronic products. The equivalent input impedance of the existing piezoelectric transformer shows a capacitive characteristic in the working process, which can seriously affect the working efficiency of a front-end driving circuit and the piezoelectric transformer and restrict the application and development of the piezoelectric transformer. In order to solve this problem, an extra inductor is usually connected in series or in parallel between the driving terminal and the piezoelectric transformer to compensate for the capacitive input impedance of the piezoelectric transformer. However, the method introduces an additional electromagnetic element, so that the cost is high, the volume is increased, the advantage of no electromagnetic interference of the piezoelectric transformer is weakened, and the application and development of miniaturization and integration of the piezoelectric transformer are not facilitated. Therefore, the present invention provides an integrated piezoelectric transformer capable of realizing capacitive impedance self-compensation.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: how to solve the problem that the equivalent input impedance of the existing piezoelectric transformer shows the capacitive characteristic in the working process and can seriously affect the front-end driving circuit and the working efficiency of the piezoelectric transformer, and provides an integrated piezoelectric transformer capable of realizing the capacitive impedance self-compensation. The integrated piezoelectric transformer combines the piezoelectric inductor with the piezoelectric transformer, and can show resistive or inductive characteristics to the outside in a certain driving frequency range, so that the capacitive impedance of the original piezoelectric transformer is well compensated, and the problem of the overall working efficiency of a driving circuit and the piezoelectric transformer is effectively solved.
The piezoelectric inductor and the piezoelectric transformer are made of piezoelectric ceramic pieces, electrodes are arranged on the upper surface and the lower surface of each piezoelectric ceramic piece, an output electrode of the piezoelectric inductor is connected with an input electrode of the piezoelectric transformer on the same plane, and a driving signal is input into the piezoelectric transformer through the piezoelectric inductor.
Furthermore, the piezoelectric ceramic plate is a rectangular piezoelectric ceramic plate, and the piezoelectric inductor and the piezoelectric transformer are respectively positioned on two sides of the rectangular piezoelectric ceramic plate.
Furthermore, the rectangular piezoelectric ceramic piece is divided into two parts along the width direction from half of the length of the lower surface electrode, one side of the lower surface electrode of the rectangular piezoelectric ceramic piece is divided into two parts along the length direction from half of the width of the lower surface electrode of the rectangular piezoelectric ceramic piece, the other side of the lower surface electrode of the rectangular piezoelectric ceramic piece is set as an input electrode of the piezoelectric inductor, and the side of the lower surface electrode of the rectangular piezoelectric ceramic piece divided into two parts along the length direction is respectively set as an output electrode and an input electrode of the piezoelectric transformer.
Furthermore, the rectangular piezoelectric ceramic sheet is divided into two parts along the width direction from the half of the length of the upper surface electrode, one side of the upper surface electrode of the rectangular piezoelectric ceramic sheet is divided into two parts along the length direction from the half of the width of the upper surface electrode of the rectangular piezoelectric ceramic sheet, the other side of the upper surface electrode of the rectangular piezoelectric ceramic sheet is set as the output electrode of the piezoelectric inductor, and the side of the upper surface electrode of the rectangular piezoelectric ceramic sheet divided into two parts along the length direction is respectively set as the other output electrode and the other input electrode of the piezoelectric transformer.
Furthermore, the two output electrodes and the two input electrodes of the piezoelectric transformer are vertically corresponding to each other on the surface of the rectangular piezoelectric ceramic plate.
Furthermore, the output electrode of the piezoelectric inductor arranged on the upper surface of the rectangular piezoelectric ceramic sheet is connected with the input electrode of the piezoelectric transformer arranged on the upper surface of the rectangular piezoelectric ceramic sheet.
Furthermore, gaps are arranged among the electrodes on the upper surface and the lower surface of the rectangular piezoelectric ceramic sheet, and the gaps are formed by etching.
Furthermore, the monolithic piezoelectric transformer composed of the rectangular piezoelectric ceramic piece, the piezoelectric inductor and the input/output electrode of the piezoelectric transformer is of a sheet rectangular structure with equal thickness, and the integral piezoelectric transformer is cuboid.
Compared with the prior art, the invention has the following advantages: the integrated piezoelectric transformer capable of realizing the capacitive impedance self-compensation does not need to be additionally provided with a traditional inductance element in the driving process, and can realize the capacitive impedance self-compensation of the piezoelectric transformer in a certain frequency range; the non-inductive driving can be well realized, and the working efficiency of the piezoelectric transformer and the driving circuit is improved; the piezoelectric inductor and the piezoelectric transformer are made of the same piece of piezoelectric ceramic, integration among piezoelectric structures is achieved to a certain degree, light and small application of the piezoelectric transformer is guaranteed, and the piezoelectric transformer is worthy of being popularized and used.
Drawings
Fig. 1 is a schematic structural diagram of an integrated piezoelectric transformer according to a second embodiment of the present invention;
fig. 2 is a schematic diagram of the piezoelectric inductance part, the integral part and the no-load admittance experiment result of the integrated piezoelectric transformer in the second embodiment of the present invention;
fig. 3 is a schematic diagram illustrating experimental results of impedance phases of individual parts under the condition that a piezoelectric inductance part and a piezoelectric transformer part of an integrated piezoelectric transformer are separated according to a second embodiment of the present invention;
fig. 4 is a schematic diagram of the experimental results of the impedance phase of each part under the condition that the piezoelectric inductance part and the piezoelectric transformer part of the integrated piezoelectric transformer are conducted in the second embodiment of the present invention;
FIG. 5 is a diagram illustrating the efficiency comparison simulation results of the integrated piezoelectric transformer and the single piezoelectric transformer in the second embodiment of the present invention;
fig. 6 is an equivalent driving circuit diagram of an integrated piezoelectric transformer in the second embodiment of the present invention.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
Example one
The embodiment provides a technical scheme: an integrated piezoelectric transformer capable of realizing capacitive impedance self-compensation is divided into a left half part and a right half part, wherein the left half part is a piezoelectric inductor, the right half part is a piezoelectric transformer, the piezoelectric inductor and the piezoelectric transformer are coupled in a mechanical structure and are connected in series in an electrode configuration.
The integrated piezoelectric transformer is made of rectangular piezoelectric ceramic pieces, and electrodes are plated on the upper surface and the lower surface of each piezoelectric ceramic piece; in the electrode configuration, the output electrode of the piezoelectric inductor is communicated with the input electrode of the piezoelectric transformer on the same surface, so that the driving signal is ensured to flow into the piezoelectric transformer through the piezoelectric inductor.
Dividing the electrode on the lower surface of the rectangular piezoelectric ceramic piece into two parts along the width direction from the half part of the length, dividing the electrode on the right part of the lower surface into two parts along the length direction from the half part of the width, and corroding two gaps by using nitric acid, so that the lower surface of the piezoelectric ceramic piece is divided into three parts of 2:1: 1; corresponding to the upper surface electrode of the rectangular piezoelectric ceramic piece, the rectangular piezoelectric ceramic piece is also divided into three parts of 2:1:1 by the same process; the lower surface of the left side of the rectangular piezoelectric ceramic piece is fixedly provided with an input electrode of a piezoelectric inductor, and an upper surface electrode corresponding to the input electrode is provided with an output electrode of the piezoelectric inductor; the right side part of the rectangular piezoelectric ceramic piece is provided with a piezoelectric transformer, the upper and lower surface electrodes corresponding to the front half part structure can be used as input electrodes of the piezoelectric transformer, the upper and lower surface electrodes corresponding to the rear half part structure can be used as output electrodes of the piezoelectric transformer, the upper and lower surface electrodes corresponding to the rear half part structure can also be used as input electrodes of the piezoelectric transformer, and the upper and lower surface electrodes corresponding to the front half part structure can be used as output electrodes of the piezoelectric transformer; then the output electrode of the piezoelectric inductor needs to be in series conduction with the input electrode of the piezoelectric transformer with the same surface.
The monolithic piezoelectric transformer composed of rectangular piezoelectric ceramic pieces, piezoelectric inductors and input and output electrodes of the piezoelectric transformer is of a sheet rectangular structure with equal thickness, and the integral piezoelectric transformer is cuboid.
Example two
As shown in fig. 1, the piezoelectric inductor portion of the integrated piezoelectric transformer 1 is 6, the piezoelectric transformer portion is 7, the input end of the piezoelectric inductor is 9 (lower surface side electrode), the output end of the piezoelectric transformer is 2 (electrode at the position where the upper surface is opposite to the input end 9), the input ends of the piezoelectric transformer are 11 and 12 (electrode at the upper and lower surfaces near the rear side), the output ends of the piezoelectric transformer are 4 and 5 (electrode at the upper and lower surfaces near the front side), and 8 is a common portion formed by connecting and conducting the output end 2 of the piezoelectric inductor and the input end 12 of the same surface of the piezoelectric transformer. 10 is a separation gap between the piezoelectric inductor input part and the piezoelectric transformer part, and 3 is a separation gap between the piezoelectric inductor output part and the piezoelectric transformer output end. The input and output sections of the piezoelectric transformer are also separated by nitric acid etching, as shown by separation gaps 13, 14 in fig. 1. As shown by reference numeral 15, the polarization direction of the integrated piezoelectric transformer 1 is polarized in the thickness direction, and the piezoelectric inductance part 6 and the piezoelectric transformer part 7 are polarized in the thickness direction in the same polarization direction.
In this embodiment, when the surface electrode of the piezoelectric ceramic plate is divided, a symmetrical division manner is adopted in several dividing processes, which does not mean that only the division manner can be adopted, theoretically, the surface electrode of the piezoelectric ceramic plate is only required to be divided into a plurality of electrode portions meeting the number requirement, and the area size of each electrode portion can be flexibly adjusted according to the design requirement of the product.
It should be noted that, in the present embodiment, a rectangular piezoelectric transformer and a thickness direction polarization mode are used for description, which only shows an example of application of the present invention, and the division mode of the present invention can also be applied to piezoelectric transformers of other shapes and polarization modes.
As shown in fig. 2, the resonance points of the piezoelectric inductance part, the piezoelectric transformer part, and the whole of the integrated piezoelectric transformer are different from the admittance peak. As can be seen from FIG. 2, the piezoelectric inductor part is in resonance at 117.6kHz, with an admittance peak of 397.7 mS; the piezoelectric transformer part is in a resonance state at 122.2kHz, and the admittance peak value is 98.4 mS; the whole body is in a resonance state at about 120.8kHz, and the admittance peak value is 76.8 mS.
As shown in fig. 3, after the piezoelectric inductor and the piezoelectric voltage device are partially separated, the inductive area of the piezoelectric inductor is between 123.1kHz and 128.2kHz, and the impedance phase is about 60 °; the piezoelectric transformer also has an inductive section under no load, the impedance phase is about 47 degrees between 124.9kHz and 127.5 kHz; under the condition of loading of the piezoelectric transformer, the impedance phase between 120kHz and 132kHz is less than 0 degree, and the capacitive impedance characteristics are shown, so that capacitive compensation is required through piezoelectric inductors in the driving process.
As shown in fig. 4, when the piezoelectric inductor part and the piezoelectric transformer part are conducted, the inductive region of the piezoelectric inductor is between 113.6kHz and 125.7kHz, and the impedance phase peak is about 32 °; the piezoelectric transformer is partially influenced by piezoelectric inductance, so that the piezoelectric transformer also has an inductive area with a small frequency range under the load, the inductive area is between 121.2kHz and 122.6kHz, and the peak value of the impedance phase is about 9 degrees; the whole inductive area is between 119.2kHz and 122.6kHz, and the peak value of the impedance phase is about 18 degrees.
As shown in fig. 5, the piezoelectric transformers before and after integration are different in driving efficiency. As can be seen from FIG. 5, the working efficiency of the single piezoelectric transformer in the frequency range of 122.5 kHz-132.5 kHz has large fluctuation, and the maximum efficiency is 83.2%; the piezoelectric transformer with integrated piezoelectric inductor has two frequency peak points between 115kHz and 130.5kHz, and has high working efficiency between 120kHz and 126.5kHz, and the maximum efficiency is 83.8%. Before the contrast integration, the frequency range of the piezoelectric transformer capable of working efficiently is enlarged.
As shown in fig. 6, the piezoelectric inductor is connected in series with the piezoelectric transformer as a whole, and as can be seen from fig. 6, the output electrode of the piezoelectric inductor is electrically connected to one input electrode of the piezoelectric transformer on the same surface.
In fig. 6, it is to be noted that: PL denotes piezoelectric inductance, PT denotes piezoelectric transformer, IPT denotes integrated piezoelectric transformer, PL-A denotes piezoelectric inductance input, PL-B denotes piezoelectric inductance output, PT-in-A denotes piezoelectric transformer input A, PT-in-B denotes piezoelectric transformer input B, PT-out-A denotes piezoelectric transformer output A, PT-out-A denotes piezoelectric transformer output B.
In summary, the integrated piezoelectric transformer capable of realizing the capacitive impedance self-compensation of the above embodiment does not need to add a conventional inductance element in the driving process, and can realize the capacitive impedance self-compensation of the piezoelectric transformer in a certain frequency range; the non-inductive driving can be well realized, and the working efficiency of the piezoelectric transformer and the driving circuit is improved; the piezoelectric inductor and the piezoelectric transformer are made of the same piece of piezoelectric ceramic, integration among piezoelectric structures is achieved to a certain degree, light and small application of the piezoelectric transformer is guaranteed, and the piezoelectric transformer is worthy of being popularized and used.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. An integrated piezoelectric transformer capable of realizing capacitive impedance self-compensation, characterized in that: the piezoelectric transformer comprises a piezoelectric inductor and a piezoelectric transformer, wherein the piezoelectric inductor and the piezoelectric transformer are made of the same piezoelectric ceramic piece, a plurality of electrodes are arranged on the upper surface and the lower surface of each piezoelectric ceramic piece, the electrodes comprise an input/output electrode of the piezoelectric inductor and an input/output electrode of the piezoelectric transformer, the output electrode of the piezoelectric inductor is connected with the input electrode of the piezoelectric transformer on the same plane, and a driving signal is input into the piezoelectric transformer through the piezoelectric inductor.
2. The integrated piezoelectric transformer capable of realizing capacitive impedance self-compensation according to claim 1, wherein: the piezoelectric ceramic piece is a rectangular piezoelectric ceramic piece, and the piezoelectric inductor and the piezoelectric transformer are respectively positioned on two sides of the rectangular piezoelectric ceramic piece.
3. The integrated piezoelectric transformer capable of realizing capacitive impedance self-compensation according to claim 2, wherein: the rectangular piezoelectric ceramic piece is divided into two parts along the width direction from the half of the length of the lower surface electrode, one side of the lower surface electrode of the rectangular piezoelectric ceramic piece is divided into two parts along the length direction from the half of the width, the other side of the lower surface electrode of the rectangular piezoelectric ceramic piece is set as an input electrode of the piezoelectric inductor, and the side of the lower surface electrode of the rectangular piezoelectric ceramic piece which is divided into two parts along the length direction is respectively set as an output electrode and an input electrode of the piezoelectric transformer.
4. The integrated piezoelectric transformer capable of realizing capacitive impedance self-compensation according to claim 3, wherein: the rectangular piezoelectric ceramic piece is divided into two parts along the width direction from the half of the length of the upper surface electrode, one side of the upper surface electrode of the rectangular piezoelectric ceramic piece is divided into two parts along the length direction from the half of the width, the other side of the upper surface electrode of the rectangular piezoelectric ceramic piece is set as an output electrode of the piezoelectric inductor, and the side of the upper surface electrode of the rectangular piezoelectric ceramic piece which is divided into two parts along the length direction is respectively set as the other output electrode and the other input electrode of the piezoelectric transformer.
5. The integrated piezoelectric transformer capable of realizing capacitive impedance self-compensation according to claim 4, wherein: and the positions of two output electrodes and two input electrodes of the piezoelectric transformer on the surface of the rectangular piezoelectric ceramic piece are vertically corresponding.
6. The integrated piezoelectric transformer capable of realizing capacitive impedance self-compensation according to claim 5, wherein: the output electrode of the piezoelectric inductor arranged on the upper surface of the rectangular piezoelectric ceramic sheet is connected with the input electrode of the piezoelectric transformer arranged on the upper surface of the rectangular piezoelectric ceramic sheet.
7. The integrated piezoelectric transformer capable of realizing capacitive impedance self-compensation according to claim 6, wherein: gaps are formed among all the electrodes on the upper surface and the lower surface of the rectangular piezoelectric ceramic sheet through etching.
8. The integrated piezoelectric transformer capable of realizing capacitive impedance self-compensation according to claim 7, wherein: the polarization direction of the integrated piezoelectric transformer is polarization along the thickness direction, and the piezoelectric inductor and the piezoelectric transformer are polarized along the thickness direction in the same direction.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1122968A (en) * | 1994-11-10 | 1996-05-22 | 北京伟泰电子电器有限公司 | Power supply circuit of low transformation ratio piezoelectric ceramic transformer |
| CN1300087A (en) * | 1999-12-16 | 2001-06-20 | 香港理工大学 | Stepdown piezoelectric ceramic autotransformer and its making process |
| CN1323043A (en) * | 2000-05-04 | 2001-11-21 | 三星电机株式会社 | Piezoelectric ceramics composition and high-output power transformer produced with the same composition |
| US20040174098A1 (en) * | 2003-03-04 | 2004-09-09 | Yu-Hsiang Hsu | Optimized piezoelectric transformer apparatus with maximum energy conversion efficiency |
| CN1551382A (en) * | 2003-05-16 | 2004-12-01 | ���µ�����ҵ��ʽ���� | Piezoelectric transformer, power supply circuit and lighting unit using said piezoelectric transformer |
| CN1604354A (en) * | 2004-11-03 | 2005-04-06 | 西安康鸿信息技术股份有限公司 | Polarity interleaving type piezo-electric ceramic transformer having reversed phase twin-output |
| JP2008181966A (en) * | 2007-01-23 | 2008-08-07 | Sumida Corporation | Piezoelectric transformer and power supply circuit using the same |
| CN104064668A (en) * | 2014-06-05 | 2014-09-24 | 中国科学院苏州生物医学工程技术研究所 | Piezoelectric transformer for outputting voltages based on stress change |
| CN104821224A (en) * | 2015-05-18 | 2015-08-05 | 中国科学技术大学 | Inductance based on piezoceramic ceramic material and application thereof |
| CN104851969A (en) * | 2015-05-18 | 2015-08-19 | 中国科学院苏州生物医学工程技术研究所 | Piezoelectric ceramic inductor and integrated inductor comprising piezoelectric ceramic inductor |
| CN108140719A (en) * | 2015-10-07 | 2018-06-08 | 爱普科斯公司 | Piezoelectric transformer |
| CN111180570A (en) * | 2019-12-12 | 2020-05-19 | 安徽大学 | Single-layer piezoelectric transformer capable of realizing different step-up ratios |
-
2020
- 2020-11-02 CN CN202011204897.1A patent/CN112366271B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1122968A (en) * | 1994-11-10 | 1996-05-22 | 北京伟泰电子电器有限公司 | Power supply circuit of low transformation ratio piezoelectric ceramic transformer |
| CN1300087A (en) * | 1999-12-16 | 2001-06-20 | 香港理工大学 | Stepdown piezoelectric ceramic autotransformer and its making process |
| CN1323043A (en) * | 2000-05-04 | 2001-11-21 | 三星电机株式会社 | Piezoelectric ceramics composition and high-output power transformer produced with the same composition |
| US20040174098A1 (en) * | 2003-03-04 | 2004-09-09 | Yu-Hsiang Hsu | Optimized piezoelectric transformer apparatus with maximum energy conversion efficiency |
| CN1551382A (en) * | 2003-05-16 | 2004-12-01 | ���µ�����ҵ��ʽ���� | Piezoelectric transformer, power supply circuit and lighting unit using said piezoelectric transformer |
| CN1604354A (en) * | 2004-11-03 | 2005-04-06 | 西安康鸿信息技术股份有限公司 | Polarity interleaving type piezo-electric ceramic transformer having reversed phase twin-output |
| JP2008181966A (en) * | 2007-01-23 | 2008-08-07 | Sumida Corporation | Piezoelectric transformer and power supply circuit using the same |
| CN104064668A (en) * | 2014-06-05 | 2014-09-24 | 中国科学院苏州生物医学工程技术研究所 | Piezoelectric transformer for outputting voltages based on stress change |
| CN104821224A (en) * | 2015-05-18 | 2015-08-05 | 中国科学技术大学 | Inductance based on piezoceramic ceramic material and application thereof |
| CN104851969A (en) * | 2015-05-18 | 2015-08-19 | 中国科学院苏州生物医学工程技术研究所 | Piezoelectric ceramic inductor and integrated inductor comprising piezoelectric ceramic inductor |
| CN108140719A (en) * | 2015-10-07 | 2018-06-08 | 爱普科斯公司 | Piezoelectric transformer |
| CN111180570A (en) * | 2019-12-12 | 2020-05-19 | 安徽大学 | Single-layer piezoelectric transformer capable of realizing different step-up ratios |
Non-Patent Citations (3)
| Title |
|---|
| ZIJIANG YANG等: "Resonant Current Estimation and Phase-Locked Loop Feedback Design for Piezoelectric Transformer-Based Power Supplies", 《IEEE TRANSACTIONS ON POWER ELECTRONICS》 * |
| 林书玉: "压电陶瓷变压器及其应用现状", 《陕西师范大学学报(自然科学版)》 * |
| 琚斌: "压电变压器新型无电感驱动拓扑结构的研究", 《万方数据》 * |
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