CN101924479B - Piezoelectric power supply converter - Google Patents
Piezoelectric power supply converter Download PDFInfo
- Publication number
- CN101924479B CN101924479B CN200910147558.1A CN200910147558A CN101924479B CN 101924479 B CN101924479 B CN 101924479B CN 200910147558 A CN200910147558 A CN 200910147558A CN 101924479 B CN101924479 B CN 101924479B
- Authority
- CN
- China
- Prior art keywords
- base material
- power supply
- piezoelectric
- supply converter
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Dc-Dc Converters (AREA)
Abstract
System of the present invention discloses a kind of piezoelectric power supply converter, it is utilize piezoelectric element to replace traditional capacitor, because piezoelectric element comprises higher capacitance than traditional capacitor, and back voltage effect can be produced when being energized distortion, produce direct piezoelectric effect after distortion, so have positive charge and produce, have and amplify voltage effect and reach high-power output, therefore, the shortcoming that the large and small-power of traditional capacitor low-voltage, leakage current exports can be improved.
Description
[technical field]
System of the present invention, about a kind of piezoelectric power supply converter, particularly utilizes the power supply changeover device of piezoelectric element bring to power output about one.
[background technology]
At present, increasing portable device starts to provide the advanced functions such as color/graphics, three-dimensional message and link, such as GPRS, wireless network and bluetooth and video signal and camera shooting.Compared to the portable device of too fat to move heaviness, consumer wishes that product design is not only compact, easy to operate, also has very long battery.The hobby of consumer is that circuit design engineer brings awkward situation: they must provide more power supplys to system and produce more groups of voltages, but at this simultaneously, and portable product can the space that uses of power supply source supply and battery capacity but reduce day by day.
In order to meet these technical requirements, designer just must adopt power-efficient higher, but in the circuit of general power supply changeover device, is use general capacitor serial or parallel connection to do resonance effect in inductance, but, the capacitance of general electric capacity is low, if input voltage signal is excessive, can cause very large leakage current, the efficiency of power stage is not high, and the resistance to pressure of capacitor is not enough, failure mode can make capacitor explodes, easily causes the danger of catching fire.
In view of this, the present invention proposes a kind of piezoelectric power supply converter then, to improve those disappearances be present in prior art.
[summary of the invention]
Main purpose of the present invention is to provide a kind of piezoelectric power supply converter, utilizes the simple piezoelectric element of structure to coordinate general transformer, the power output increased in order to provide multiple, and then the effect reaching high-power output.
Another object of the present invention system provides a kind of piezoelectric power supply converter, utilize the simple piezoelectric element of structure to replace general electric capacity to use, the leakage current of piezoelectric element is little, resistance to pressure is high, do not have overheated danger on fire, its reliability is high, and then can solve capacitor in conventional power source transducer cause resistance to forcing down and overheated danger on fire, secondly, piezoelectric element volume is little, package thickness is thin, has market competition advantage.
For achieving the above object, the invention provides a kind of piezoelectric power supply converter, be applied to the power supply changeover device that interchange turns direct current, it comprises transformer cording once side and secondary side, at least one first piezoelectric element system one end is connected to primary side, and other end system receives a pulse wave electric voltage and exports primary side to, is provided with at least one second piezoelectric element in output, it is be positioned at secondary side, and is used for output one direct voltage and operates to external loading.
In addition, the invention provides another kind of piezoelectric power supply converter, be applied to the power supply changeover device that stream is delivered in interchange, it comprises transformer and has primary side and secondary side, at least one first piezoelectric element system one end is connected to primary side, other end system receives a pulse wave electric voltage and exports primary side to, and is operated by secondary side output AC voltage to external loading.
Under to coordinate by specific embodiment appended by graphicly to illustrate in detail, when the effect being easier to understand the object of the present invention, technology contents, feature and reached.
[accompanying drawing explanation]
First figure is the first embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of half-bridge input.
The schematic diagram of the piezoelectricity oscillator that the 2nd A figure is provided by the embodiment of the present invention.
The equivalent electric circuit of the piezoelectricity oscillator that the 2nd B figure is provided by the embodiment of the present invention.
The equivalent electric circuit of the piezoelectric capacitance that the 2nd C figure is provided by the embodiment of the present invention.
3rd figure is the second embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of full-bridge input.
4th figure is the 3rd embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of full-bridge input.
5th figure is the 4th embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of full-bridge input.
6th figure is the 5th embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of full-bridge input.
7th figure is the 6th embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of half-bridge input.
8th figure is the 7th embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of half-bridge input.
9th figure is the 8th embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of full-bridge input.
The equivalent electric circuit of the insulated type piezoelectricity oscillator that the tenth A figure is provided by the embodiment of the present invention.
The structure cutaway view of the insulated type piezoelectricity oscillator that the tenth B figure is provided by the embodiment of the present invention.
11 figure is the 9th embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of half-bridge input.
12 figure are the tenth embodiment schematic diagram that the present invention is applied to that the power supply changeover device of stream is delivered in semibridge system interchange.
13 figure is the 11 embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of full-bridge input.
14 figure is the 12 embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of full-bridge input.
15 figure is the 13 embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of half-bridge input.
16 figure is the 14 embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of full-bridge input.
Shown in 17 figure, for the present invention is applied to the 15 embodiment schematic diagram of the piezoelectric power supply converter of full-bridge input.
18 figure is the 16 embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of half-bridge input.
19 figure is the 17 embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of half-bridge input.
In figure:
11 transformer 51 first resonant inductances
111 primary side 52 second resonant inductances
112 secondary side 91 insulated type piezoelectricity oscillators
12 piezoelectricity oscillator 911 first input ends
13 piezoelectric capacitance 912 second inputs
14 filter inductance 913 first outputs
21 base material 914 second outputs
22 conductive layer 92 base materials
23 conductive layer 93 first top electrodes
31 first piezoelectricity oscillator 94 first bottom electrodes
32 second piezoelectricity oscillator 95 second top electrodes
41 centre cap 96 second bottom electrodes
[embodiment]
Refer to the first figure, for the present invention is applied to the first embodiment schematic diagram of the piezoelectric power supply converter of half-bridge input, it comprises a transformer 11, at least one first piezoelectric element and at least one second piezoelectric element, and wherein, transformer 11 has primary side 111 and secondary side 112.The primary side 111 of transformer 11 is utilized to use as inductance, and a resonant circuit in series with the first piezoelectric element, and the capacitance characteristic that the utilization of the first piezoelectric element system itself has uses as a piezoelectricity oscillator 12, and in order to replace the capacitor in conventional power source transducer.Wherein, the piezoelectricity oscillator 12 that the present embodiment is disclosed, as shown in the 2nd A figure, system makes the base material 21 of a circular plate shape with piezoelectricity material, certainly, its shape also can be square or rectangle or other geometry, then makes the conductive layer 22,23 that is similarly circular with elargol, copper cream or nickel cream in the upper surface all or in part of base material 21 and lower surface, to form the two poles of the earth of piezoelectricity oscillator 12 to guide electric current.At this, referring to the 2nd B figure, is the equivalent electric circuit of piezoelectricity oscillator 12, illustrates equivalent resistance R, equivalent inductance L and represent equivalent capacity Ca and the Cb of electrical characteristics and mechanical characteristic respectively in equivalent electric circuit.The present embodiment can utilize the primary side 111 of transformer 11 to use as inductance to form a half-bridge resonant circuit, when resonance, piezoelectricity oscillator 12 is in order to store electrical energy and have piezoelectric property, can Modulating Power factor again by power stage, inverse piezoelectric effect can be produced during energising distortion, direct piezoelectric effect can be produced after distortion, and it just, the conversion of inverse piezoelectric effect will generate positive charge, make voltage amplification, and there is the effect of amplifying voltage, to reach effect of high-power output, wherein, the mechanical characteristic Cb value of the equivalent capacity in equivalent electric circuit is about 3 times of capacitances of electrical characteristics Ca value, the capacitance of Ca value with Cb value is added, piezoelectricity oscillator 12 is so made to have high-capacitance (Q=C*V), therefore the power output that multiple increases can be provided, and then raise the efficiency effect of power conversion.
Second piezoelectric element system is positioned at secondary side 112, and the capacitance characteristic that the utilization of the second piezoelectric element system itself has uses as a piezoelectric capacitance 13, and in order to replace the capacitor in conventional power source transducer.Wherein, the piezoelectric capacitance 13 that the present embodiment is disclosed, as shown in the 2nd C figure, is piezoelectric capacitance 13 equivalent electric circuit, illustrates the equivalent capacity Ca of equivalent resistance R, equivalent inductance L and expression electrical characteristics in equivalent electric circuit.Be with general capacitor difference, the piezoelectricity oscillator 12 of the present embodiment is with the leakage current of piezoelectric capacitance 13 is little, resistance to pressure is high, do not have overheated danger on fire, its reliability is high, and then can solve capacitor in conventional power source transducer cause resistance to forcing down and overheated danger on fire, in addition, because piezoelectricity oscillator 12 is little with the volume of piezoelectric capacitance 13, package thickness is thin, has market competition advantage.
The secondary side 112 two ends system of transformer 11 is connected to two diode D1 and D2, and diode D1 and D2 is connected to filter inductance 14, a second piezoelectric element system and is connected to filter inductance 14 to form an output filtering rectification circuit.Because diode D1 and D2 has the characteristic of unilateal conduction, the alternating voltage of direction and size alternation can be transformed to direct voltage, pretend the use into rectification.
When the input voltage of primary side 111 be on the occasion of, the then input voltage responding to secondary side 112 be also on the occasion of.When input voltage is positive half cycle, the upper end of the secondary side 112 of transformer 11 is just, lower end is negative, then diode D1 is forward bias voltage drop, electric current can flow out through filter inductance 14 to piezoelectric capacitance 13 from diode D1 and charge, but diode D2 is reverse bias, is equivalent to open-circuit condition, does not have current flowing.When input voltage is negative half period, the upper end of the secondary side 112 of transformer 11 is negative, lower end is just, then diode D1 is reverse bias, electric current can not circulate, and diode D2 is forward bias voltage drop, and electric current can flow out through filter inductance 14 to piezoelectric capacitance 13 by diode D2 and charge, by this, piezoelectric capacitance 13 is used for output dc voltage and operates to external loading.
See also the first figure and the 3rd figure.3rd figure is the second embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of full-bridge input, and the embodiment of itself and the first figure duplicates, and identical part is just no longer added to repeat.Wherein, difference is to have 2 first piezoelectric elements, the capacitance characteristic that its utilization itself has uses as the first piezoelectricity oscillator 31 and the second piezoelectricity oscillator 32, and be positioned at the primary side 111 of transformer 11, the primary side of transformer 11 is utilized to use as inductance to form a full-bridge resonant circuit, piezoelectricity oscillator 31,32 is connected to primary side 111 two ends, and the first piezoelectricity oscillator 31 and the second piezoelectricity oscillator 32 are reception pulse wave electric voltage.When resonance, make it produce piezoelectric effect and promote capacitance and export primary side 111 to, more can improve the output of power than utilization piezoelectricity oscillator.
See also the 3rd figure and the 4th figure.4th figure is the 3rd embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of full-bridge input, and the embodiment of itself and the 3rd figure duplicates, and identical part is just no longer added to repeat.Wherein, difference is that transformer 11 has at least one centre cap 41, and is positioned in the middle of secondary side 112, and the voltage of centre cap 41 to two-end-point is equal.
When input voltage is positive half cycle, diode D1 is forward bias voltage drop, and electric current can flow out through filter inductance 14 to piezoelectric capacitance 13 from diode D1 and charge, return centre cap 41, but diode D2 is reverse bias, is equivalent to open-circuit condition, does not have current flowing.When input voltage is negative half period,
Diode D1 is reverse bias, electric current can not circulate, and diode D2 is forward bias voltage drop, electric current can be flowed out by diode D2, is charged by filter inductance 14 to piezoelectric capacitance 13, returns centre cap 41, therefore, the polarity of voltage drop that piezoelectric capacitance 13 produces is identical with during positive half cycle, namely represents to be same direction by the electric current of piezoelectric capacitance 13, then is operated to external loading by piezoelectric capacitance 13 output dc voltage.
See also the 4th figure and the 5th figure, the 5th figure is the 4th embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of full-bridge input, and the embodiment of itself and the 4th figure duplicates, and identical part is just no longer added to repeat.Wherein, difference is to comprise the first resonant inductance 51 and the second resonant inductance 52, and corresponding series connection the first piezoelectricity oscillator 31 and the second piezoelectricity oscillator 32, to form a full-bridge resonant circuit, and are positioned at the primary side 111 of transformer 11 respectively for they.First piezoelectricity oscillator 31 and the second piezoelectricity oscillator 32 are receive pulse wave electric voltage through the first resonant inductance 51 and the second resonant inductance 52 respectively, because the first resonant inductance 51 and the second resonant inductance 52 have energy storage effect, the first piezoelectricity oscillator 31 and the higher voltage of the second piezoelectricity oscillator 32 therefore can be provided.When resonance, can produce piezoelectric effect and promote capacitance and export primary side 111 to, it exports in order to provide the relatively high power of external loading.In addition, transformer 11 can be the design of non-stop layer tap, as shown in the 6th figure, for the present invention is applied to the 5th embodiment schematic diagram of the piezoelectric power supply converter of full-bridge input, secondary side 112 two ends of transformer 11 are connected to two diode D1, D2, in order to alternating voltage is transformed to direct voltage, then operated to external loading by piezoelectric capacitance 13 output dc voltage.
See also the 5th figure and the 7th figure, the 7th figure is the 6th embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of half-bridge input, and the embodiment of itself and the 5th figure duplicates, and identical part is just no longer added to repeat.Wherein, difference is that use resonant inductance 51 is connected in series in a piezoelectricity oscillator 31 to form a half-bridge resonant circuit, and is positioned at the primary side 111 of transformer 11.When resonance, can produce piezoelectric effect and promote capacitance and export primary side 111 to, it exports in order to provide the smaller power of external loading.In addition, transformer can be the design of non-stop layer tap, as shown in the 8th figure, for the present invention is applied to the 7th embodiment schematic diagram of the piezoelectric power supply converter of half-bridge input, secondary side 112 two ends of transformer 11 are connected to two diode D1, D2, in order to alternating voltage is transformed to direct voltage, then operated to external loading by piezoelectric capacitance 13 output dc voltage.
See also the 6th figure and the 9th figure, the 9th figure is the 8th embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of full-bridge input, and the embodiment of itself and the 6th figure duplicates, and identical part is just no longer added to repeat.Wherein, difference is that the first piezoelectricity oscillator 31 of the 6th figure and the second piezoelectricity oscillator 32 are merged into an insulated type piezoelectricity oscillator 91 to be replaced using for example, certainly, the visual demand of insulated type piezoelectricity oscillator 91 merges more piezoelectricity oscillators uses.Referring to the tenth A figure, is the equivalent electric circuit of insulated type piezoelectricity oscillator 91, and it is that the equivalent electric circuit being schemed by two the 2nd B to be illustrated merges, and therefore, can produce first input end 911, second input 912 and the first output 913, second output 914.
Continue, refer to the tenth B figure, be the structure cutaway view of insulated type piezoelectricity oscillator 91, comprise base material 92, at least one first top electrode 93, at least one first bottom electrode 94, at least one second top electrode 95 and at least one second bottom electrode 96.Base material 92 is that ceramic material formed, there is upper surface and lower surface, first top electrode 93 is arranged at the upper surface of base material 92, and the first bottom electrode 94 is arranged at the lower surface of base material 92, and symmetrical with the first top electrode 93, receive pulse wave electric voltage to the first top electrode 93 by first input end 911, and promote capacitance through inner piezoelectric effect, exported by the first bottom electrode 94, it is the first output 913 again.In other words, the upper surface that pulse wave electric voltage to the second top electrode 95 is arranged at base material 92 is received by the second input 912, and the second bottom electrode 96 is arranged at the lower surface of base material 92, and it is symmetrical with the second top electrode 95, second top electrode 95 receives a pulse wave electric voltage and promotes capacitance through inner piezoelectric effect, exported by the second bottom electrode 96, it is the second output 914 again.Due to this alternating voltage logical and being polarized respectively of base material between the first upper and lower electrode 93,94 and between the second upper and lower electrode 95,96, after polarization, there is positive-negative polarity, and middle unpolarized part still can keep the characteristic of ceramic material, therefore polarity is not had, when alternating voltage passes through, then it can be state of insulation.Continue, the present embodiment recycles the first resonant inductance 51 and the second resonant inductance 52 is connected to first input end 911 and the second input 912 that insulated type presses oscillator 91, to form a full-bridge resonant circuit, and is positioned at the primary side 111 of transformer 11.Wherein, when resonance, insulated type can be made to press the first input end 911 of oscillator 91 and the second input 912 to be connected to and the first resonant inductance 51 and the second resonant inductance 52, capacitance is promoted to produce piezoelectric effect, first output 913, second output 914 of insulated type pressure oscillator 91 is be connected to primary side 111 two ends, high alternating voltage after making primary side 111 have piezoelectricity conversion, exports in order to provide the relatively high power of external loading.
In addition, as shown in the 11 figure, for the present invention is applied to the 9th embodiment schematic diagram of the piezoelectric power supply converter of half-bridge input, utilize one first resonant inductance 51 to be connected to insulated type pressure oscillator 91 to form a half-bridge resonant circuit, and be positioned at the primary side 111 of transformer 11.When resonance, insulated type can be made to press oscillator 91 produce piezoelectric effect and promote capacitance and export primary side 111 to, and it exports in order to provide the smaller power of external loading.
From above-described embodiment, be a voltage and export external loading running to, if when the voltage signal of input is larger, more than two outputs can be designed, in other words, then need centre cap and more than two filter rectifiers of collocation more than two, export external loading running to provide plural voltage.
Referring to the 12 figure is the tenth embodiment schematic diagram that the present invention is applied to that the power supply changeover device of stream is delivered in semibridge system interchange, itself and the first figure difference are, the present embodiment system is applied to the power supply changeover device that stream is delivered in interchange, and the embodiment of the first figure is interchange turns the power supply changeover device of direct current, therefore the secondary side 112 of transformer 11 does not need output filtering rectification circuit alternating voltage to be converted to the action of direct voltage.The power supply changeover device that stream is delivered in interchange comprises transformer 11 and at least one first piezoelectric element, and wherein, transformer 11 has primary side 111 and secondary side 112.The primary side of transformer 11 is utilized to use as inductance, and be connected with the first piezoelectric element to form a half-bridge resonant circuit, and the capacitance characteristic that the utilization of the first piezoelectric element system itself has uses as a piezoelectricity oscillator 12, and in order to replace the capacitor in conventional power source transducer.Wherein, the piezoelectricity oscillator 12 that the present embodiment is disclosed, its structure and equivalent electric circuit are please consulted the 2nd A respectively and to be schemed and the 2nd B schemes.The present embodiment can utilize the primary side 111 of transformer 11 to use as inductance to form a half-bridge resonant circuit, when resonance, piezoelectricity oscillator 12 is in order to store electrical energy and have piezoelectric property, can Modulating Power factor again by power stage, inverse piezoelectric effect can be produced during energising distortion, direct piezoelectric effect can be produced after distortion, and it just, the conversion of inverse piezoelectric effect will generate positive charge, make voltage amplification, and there is the effect of amplifying voltage, to reach effect of high-power output, wherein, the mechanical characteristic Cb value of the equivalent capacity in equivalent electric circuit is about 3 times of capacitances of electrical characteristics Ca value, the capacitance of Ca value with Cb value is added, piezoelectricity oscillator 12 is so made to have high-capacitance (Q=C*V), therefore the power output that multiple increases can be provided, and then raise the efficiency effect of power conversion.
See also the 12 figure and the 13 figure.13 figure is the 11 embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of full-bridge input, and the embodiment of itself and the 12 figure duplicates, and identical part is just no longer added to repeat.Wherein, difference is to have 2 first piezoelectric elements, the capacitance characteristic that its utilization itself has uses as the first piezoelectricity oscillator 31 and the second piezoelectricity oscillator 32, and be positioned at the primary side 111 of transformer 11, the primary side of transformer 11 is utilized to use as inductance to form a full-bridge resonant circuit, first piezoelectricity oscillator 31 and the second piezoelectricity oscillator 32 are connected to primary side 111 two ends, and the first piezoelectricity oscillator 31 and the second piezoelectricity oscillator 32 are reception pulse wave electric voltage.When resonance, make it produce piezoelectric effect and promote capacitance and export primary side 111 to, more can improve the output of power than utilization piezoelectricity oscillator.
See also the 13 figure and the 14 figure.14 figure is the 12 embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of full-bridge input, and the embodiment of itself and the 13 figure duplicates, and identical part is just no longer added to repeat.Wherein, difference is that transformer 11 has at least one centre cap 41, and is positioned in the middle of secondary side 112, and the voltage of centre cap 41 to two-end-point is equal, makes it have two groups of output voltages, exports in order to provide the relatively high power of external loading.In addition, refer to the 15 figure, for the present invention is applied to the 13 embodiment schematic diagram of the piezoelectric power supply converter of half-bridge input, transformer 11 has at least one centre cap 41, and be positioned in the middle of secondary side 112, and the voltage of centre cap 41 to two-end-point is equal, make it have two groups of output voltages, export in order to provide the smaller power of external loading.
See also the 14 figure and the 16 figure.16 figure is the 14 embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of full-bridge input, and the embodiment of itself and the 14 figure duplicates, and identical part is just no longer added to repeat.Wherein, difference is to comprise the first resonant inductance 51 and the second resonant inductance 52, and corresponding series connection the first piezoelectricity oscillator 31 and the second piezoelectricity oscillator 32, to form a full-bridge resonant circuit, and are positioned at the primary side 111 of transformer 11 respectively for they.First piezoelectricity oscillator 31 and the second piezoelectricity oscillator 32 are receive pulse wave electric voltage through the first resonant inductance 51 and the second resonant inductance 52 respectively, because two resonant inductances 51,52 have energy storage effect, two piezoelectricity oscillators 31,32 higher voltages therefore can be provided.When resonance, can produce piezoelectric effect and promote capacitance and export primary side 111 to, it exports in order to provide the relatively high power of external loading.In addition, transformer 11 can be the design of non-stop layer tap, as shown in the 17 figure, for the present invention is applied to the 15 embodiment schematic diagram of the piezoelectric power supply converter of full-bridge input, the primary side 111 of transformer 11 responds to secondary side 112, and by secondary side 112 output AC voltage, it exports in order to provide the relatively high power of external loading.
See also the 15 figure and the 18 figure, the 18 figure is the 16 embodiment schematic diagram that the present invention is applied to the piezoelectric power supply converter of half-bridge input, and the embodiment of itself and the 15 figure duplicates, and identical part is just no longer added to repeat.Wherein, difference is that use first resonant inductance 51 is connected in series in a first piezoelectricity oscillator 31 to form a half-bridge resonant circuit, and is positioned at the primary side 111 of transformer 11.When resonance, can produce piezoelectric effect and promote capacitance and export primary side 111 to, it exports in order to provide the smaller power of external loading.In addition, transformer 11 can be the design of non-stop layer tap, as shown in the 19 figure, for the present invention is applied to the 17 embodiment schematic diagram of the piezoelectric power supply converter of half-bridge input, the primary side 111 of transformer 11 responds to secondary side 112, and by secondary side 112 output AC voltage, it exports in order to provide the smaller power of external loading.
From above-described embodiment, be a voltage and export external loading running to, if when the voltage signal of input is larger, more than two outputs can be designed, in other words, then need collocation more than two centre cap, with provide plural voltage export to external loading running.
The embodiment of the above is only technological thought and feature that the present invention is described, the content that its object enables the person skilled in the art understand the present invention is also implemented according to this, when can not with the scope of the claims of restriction the present invention, namely the equalization generally done according to disclosed spirit changes or modifies, and must be encompassed in the scope of the claims of the present invention.
Claims (12)
1. a piezoelectric power supply converter, it comprises:
One transformer, has primary side and secondary side;
At least one the first piezoelectric element for electric energy conversion, be a piezoelectricity oscillator or an insulated type piezoelectricity oscillator, the effect electricity resistance ﹑ equivalence inductance ﹑ such as the equivalent electric circuit of this piezoelectricity oscillator comprises and the equivalent capacity of electrical characteristics and the equivalent capacity of mechanical characteristic, the capacitance of the equivalent capacity of this mechanical characteristic is 3 times of capacitances of the equivalent capacity of these electrical characteristics, this the first piezoelectric element system one end is connected to this primary side, and other end system receives a continuous pulse wave voltage and exports an electric signal to this primary side;
At least one second piezoelectric element is be positioned at this secondary side, and changes for electric energy and export a direct voltage and operate to external loading; And
Also comprise a resonant inductance, it is connected in series in this first piezoelectric element to form a half-bridge resonant circuit, and is positioned at this primary side of this transformer.
2. the piezoelectric power supply converter as described in claim the 1, wherein this second piezoelectric element is a piezoelectric capacitance.
3. the piezoelectric power supply converter as described in claim the 1, wherein this piezoelectricity oscillator includes a base material and two conductive layers, this base material has upper surface and lower surface, and this two conductive layer is formed at this upper surface and lower surface respectively, and forms the two poles of the earth of this piezoelectricity oscillator.
4. the piezoelectric power supply converter as described in claim the 3, wherein the shape of this base material is circular, square or rectangle.
5. the piezoelectric power supply converter as described in claim the 1, wherein this insulated type piezoelectricity oscillator comprises base material, at least one first top electrode, at least one first bottom electrode, at least one second top electrode and at least one second bottom electrode, this base material is that ceramic material formed, there is upper surface and lower surface, this the first top electrode is arranged at the upper surface of this base material, and this first bottom electrode is arranged at the lower surface of this base material, and it is symmetrical with this first top electrode, this the second top electrode is arranged at the upper surface of this base material, and this second bottom electrode is arranged at the lower surface of this base material, and it is symmetrical with this second top electrode, wherein this is on first, with this on second between bottom electrode, between bottom electrode, base material leads to this pulse wave electric voltage respectively and is polarized, and centre is not when having an input voltage of frequency, then, unpolarized part can be state of insulation.
6. the piezoelectric power supply converter as described in claim the 1, more comprise two diodes and a filter inductance, this filter inductance one end is connected to this two diode, and the other end is connected to this second piezoelectric element to form a filter rectifier, and is positioned at this secondary side of this transformer.
7. the piezoelectric power supply converter as described in claim the 1, wherein this transformer has at least one centre cap, and it is positioned in the middle of this secondary side to make its both end voltage equal.
8. a piezoelectric power supply converter, be applied to the transducer that stream is delivered in interchange, it comprises: a transformer, has primary side and secondary side;
At least one the first piezoelectric element for electric energy conversion, be a piezoelectricity oscillator or an insulated type piezoelectricity oscillator, the effect electricity resistance ﹑ equivalence inductance ﹑ such as the equivalent electric circuit of this piezoelectricity oscillator comprises and the equivalent capacity of electrical characteristics and the equivalent capacity of mechanical characteristic, the capacitance of the equivalent capacity of this mechanical characteristic is 3 times of capacitances of the equivalent capacity of these electrical characteristics, this the first piezoelectric element system one end is connected to this primary side, other end system receives a continuous pulse wave voltage and exports an electric signal to this primary side, and is operated by this secondary side output AC voltage to external loading; And
More comprise a resonant inductance, it is connected to this first piezoelectric element to form a half-bridge resonant circuit, and is positioned at this primary side of this transformer.
9. the piezoelectric power supply converter as described in claim the 8, wherein this piezoelectricity oscillator includes a base material and two conductive layers, this base material has upper surface and lower surface, and this two conductive layer is formed at this upper surface and lower surface respectively, and forms the two poles of the earth of this piezoelectricity oscillator.
10. the piezoelectric power supply converter as described in claim the 9, wherein the shape of this base material is circular, square or rectangle.
11. piezoelectric power supply converters as described in claim the 8, wherein this insulated type piezoelectricity oscillator comprises base material, at least one first top electrode, at least one first bottom electrode, at least one second top electrode and at least one second bottom electrode, this base material is that ceramic material formed, there is upper surface and lower surface, this the first top electrode is arranged at the upper surface of this base material, and this first bottom electrode is arranged at the lower surface of this base material, and it is symmetrical with this first top electrode, this the second top electrode is arranged at the upper surface of this base material, and this second bottom electrode is arranged at the lower surface of this base material, and it is symmetrical with this second top electrode, wherein this is on first, with this on second between bottom electrode, between bottom electrode, base material leads to this pulse wave electric voltage respectively and is polarized, and centre is not when having an input voltage of frequency, then, unpolarized part can be state of insulation.
12. piezoelectric power supply converters as described in claim the 8, wherein this transformer has at least one centre cap, and it is positioned in the middle of this secondary side to make its both end voltage equal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910147558.1A CN101924479B (en) | 2009-06-16 | 2009-06-16 | Piezoelectric power supply converter |
| HK11104831.2A HK1150906A1 (en) | 2009-06-16 | 2011-05-17 | Piezoelectric power supply converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910147558.1A CN101924479B (en) | 2009-06-16 | 2009-06-16 | Piezoelectric power supply converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101924479A CN101924479A (en) | 2010-12-22 |
| CN101924479B true CN101924479B (en) | 2016-03-30 |
Family
ID=43339182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910147558.1A Active CN101924479B (en) | 2009-06-16 | 2009-06-16 | Piezoelectric power supply converter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101924479B (en) |
| HK (1) | HK1150906A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938220B (en) * | 2009-06-30 | 2014-08-20 | 金威贸易有限公司 | High-power output piezoelectric power converter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3801893A (en) * | 1970-02-19 | 1974-04-02 | Philips Corp | Pulse generator using bi-lateral solid state breakover device energized by an ac signal |
| US5543679A (en) * | 1993-08-31 | 1996-08-06 | Nippondenso Co., Ltd. | Piezolectric-element drive apparatus |
| CN1649247A (en) * | 2004-01-30 | 2005-08-03 | 台达电子工业股份有限公司 | Single pole AC/DC converter with piezoelectric transformer |
| TWM350943U (en) * | 2008-09-12 | 2009-02-11 | Midas Wei Trading Co Ltd | Piezoelectric series resonance lighting circuit |
| TWM352136U (en) * | 2008-06-17 | 2009-03-01 | Midas Wei Trading Co Ltd | Insulated piezoelectric transformer |
-
2009
- 2009-06-16 CN CN200910147558.1A patent/CN101924479B/en active Active
-
2011
- 2011-05-17 HK HK11104831.2A patent/HK1150906A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3801893A (en) * | 1970-02-19 | 1974-04-02 | Philips Corp | Pulse generator using bi-lateral solid state breakover device energized by an ac signal |
| US5543679A (en) * | 1993-08-31 | 1996-08-06 | Nippondenso Co., Ltd. | Piezolectric-element drive apparatus |
| CN1649247A (en) * | 2004-01-30 | 2005-08-03 | 台达电子工业股份有限公司 | Single pole AC/DC converter with piezoelectric transformer |
| TWM352136U (en) * | 2008-06-17 | 2009-03-01 | Midas Wei Trading Co Ltd | Insulated piezoelectric transformer |
| TWM350943U (en) * | 2008-09-12 | 2009-02-11 | Midas Wei Trading Co Ltd | Piezoelectric series resonance lighting circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101924479A (en) | 2010-12-22 |
| HK1150906A1 (en) | 2012-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101635530B (en) | Single-stage forward type high-frequency linked inverter | |
| CN103339843A (en) | Switching power supply device | |
| CN202135056U (en) | Equalization circuit used in power supply converter | |
| CN102361403A (en) | Staggered series direct current (DC)/DC converter circuit | |
| TWI422282B (en) | A lighting device for driving a light emitting diode using an insulative piezoelectric transformer | |
| CN101938220B (en) | High-power output piezoelectric power converter | |
| CN107919797A (en) | The fuel cell efficient voltage boosting dc converter of wide input range crisscross parallel type | |
| CN109818494B (en) | High-gain voltage type quasi-Y source direct current-direct current converter | |
| CN103618459A (en) | Positive and negative shock doubler rectifier converter connected in series at primary side and outputting in parallel at auxiliary side of transformer | |
| CN201601599U (en) | Piezoelectric-type power converter | |
| CN101924479B (en) | Piezoelectric power supply converter | |
| TWI394358B (en) | High power output of the piezoelectric power converter | |
| CN204858973U (en) | Isolation feedback supply circuit of LLC resonant transformation ware | |
| TWI400870B (en) | Piezoelectric power converter | |
| CN201601621U (en) | Piezoelectric type power converter for high power output | |
| CN102548151A (en) | LED (light emitting diode) driver for multi-path constant current output | |
| Ju et al. | Piezoelectric filter module used in harmonics elimination for high-efficiency piezoelectric transformer driving | |
| CN101527526B (en) | Auto-excitation type power supply transformation circuit | |
| CN201502985U (en) | Lighting device adopting insulated piezoelectric oscillator to drive light-emitting diode | |
| CN204349802U (en) | The PCB structure of diode rectification high input voltage DC/DC bat power supply | |
| CN102595725A (en) | Multi-path light emitting diode (LED) driving circuit capable of accurately equalizing flow | |
| CN201994869U (en) | Capacitor integrated high voltage low inductance laminated bus bar | |
| CN109660113A (en) | A kind of resonance drive circuit | |
| CN201766514U (en) | High-power/voltage output circuit | |
| TWM368236U (en) | Piezoelectric power converter with high power output |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1150906 Country of ref document: HK |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |