CN106160025B - A kind of wireless power transmitter - Google Patents
A kind of wireless power transmitter Download PDFInfo
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- CN106160025B CN106160025B CN201610823086.7A CN201610823086A CN106160025B CN 106160025 B CN106160025 B CN 106160025B CN 201610823086 A CN201610823086 A CN 201610823086A CN 106160025 B CN106160025 B CN 106160025B
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- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 38
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 230000021615 conjugation Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- 238000002955 isolation Methods 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The invention discloses a kind of wireless power transmitters, include the signal source for exporting PMW square waves；The signal amplification module being connect with signal source；It is connect respectively with signal source and signal amplification module, for the low-tension supply for signal source and the power supply of signal amplification module；The two-way votage control switch that high level control terminal is connect with the output end of signal amplification module, low level control end is grounded, two switch terminals are in parallel with the resonant capacitance of series resonance ring or resonance coil, two-way votage control switch is used to carry out conducting accordingly according to amplified PWM square waves or be closed, and then controls the circumferential outer transmitting magnetic energy of series resonance accordingly；For alternating current to be converted to the series resonance ring that magnetic energy is sent, the both ends of series resonance ring are electrically connected with city.In wireless power transmitter provided by the present application, series resonance ring directly uses the alternating current of alternating current, does not need rectification and filtering, it is only necessary to which a low-tension supply, circuit is simple and reliable and stable, and debugging is convenient, significantly reduces cost.
Description
Technical field
The present invention relates to wireless power technical fields, more particularly to a kind of wireless power transmitter.
Background technology
With the development of science and technology wireless power technology has also obtained great development.Wireless power hair in the prior art
The machine of penetrating is generally based on the principle of inversion, i.e., first carries out rectification, filtering to the alternating current being derived from utility grid, obtains one relatively surely
Fixed direct current, or alternating current is first depressured, then rectification, filtering obtains direct current, then passes through a half-bridge or full-bridge inverting
Circuit, by DC conversion be high-frequency alternating current, finally launched by transmitting coil, this circuit is sufficiently complex, it is other not
It says, only the driving isolated power supply of full-bridge or half-bridge inversion circuit just has multiple, further needs exist for the drive signal of multichannel isolation,
Along with the working power of output, circuit is complicated, debugging trouble, and with high costs.
Therefore, how to provide it is a kind of solve above-mentioned technical problem wireless power transmitter be that those skilled in the art are current
Problem to be solved.
Invention content
The object of the present invention is to provide a kind of wireless power transmitter, circuit very simple, and it is reliable and stable, debugging is very
It is convenient, significantly reduce cost.
In order to solve the above technical problems, the present invention provides a kind of wireless power transmitters, including：
Signal source for exporting PMW square waves；
It is connect with the signal source, the signal amplification module for being amplified to the PWM square waves；
It is connect respectively with the signal source and the signal amplification module, for amplifying for the signal source and the signal
The low-tension supply of module for power supply；
High level control terminal is connect with the output end of the signal amplification module, low level control end is grounded, two switches
The end two-way votage control switch in parallel with the resonant capacitance of series resonance ring or resonance coil, the two-way votage control switch for according to
According to amplified PWM square waves be connected or be closed accordingly, and then controls the circumferential outer transmitting of the series resonance accordingly
Magnetic energy；
For alternating current to be converted to the series resonance ring that magnetic energy is sent, the both ends of the series resonance ring and institute
State city's electrical connection.
Preferably, the two-way votage control switch includes the first IGBT and the 2nd IGBT, wherein：
The grid of first IGBT is connect with the grid of the 2nd IGBT, and common end is controlled as the high level
End；The emitter of first IGBT is connect with the emitter of the 2nd IGBT, and common end is as the low level control
End；Two respectively as the two-way votage control switch of the collector of first IGBT and the collector of the 2nd IGBT
Switch terminals.
Preferably, the two-way votage control switch includes the first NMOS and the 2nd NMOS, wherein：
The grid of first NMOS is connect with the grid of the 2nd NMOS, and common end is controlled as the high level
End；The source electrode of first NMOS is connect with the source electrode of the 2nd NMOS, and common end is as the low level control end；Institute
State the first NMOS drain electrode and the 2nd NMOS drain electrode respectively as the two-way votage control switch two switch terminals.
Preferably, which further includes：
First end is electrically connected with the city, second end is connect with the both ends of the series resonance ring, for filtering out the string
Connection resonant ring flow to the alternating current high fdrequency component and the alternating current flow to the series resonance ring high fdrequency component filtering
Circuit.
Preferably, the filter circuit includes the first capacitance, is conjugated inductance and the second capacitance, wherein：
The first end of the conjugation inductance is in parallel with first capacitance, and common end in parallel is as the filter circuit
First end；The second end of the conjugation inductance is in parallel with second capacitance, and common end in parallel is as the filter circuit
Second end.
Preferably, first capacitance and second capacitance are X capacitances.
Preferably, the signal amplification module is operational amplifier.
The present invention provides a kind of wireless power transmitters, include the signal source for exporting PMW square waves；Connect with signal source
It connects, the signal amplification module for being amplified to PWM square waves；Connect respectively with signal source and signal amplification module, for for
The low-tension supply of signal source and the power supply of signal amplification module；High level control terminal connect with the output end of signal amplification module, is low
Two-way in parallel with the resonant capacitance of series resonance ring or resonance coil of level control terminal ground connection, two switch terminals voltage-controlled opens
It closes, two-way votage control switch is used to according to amplified PWM square waves be connected or be closed accordingly, and then controls string accordingly
Connection resonant ring emits magnetic energy outward；For alternating current to be converted to the series resonance ring that magnetic energy is sent, the two of series resonance ring
The cities Duan Yu are electrically connected.
As it can be seen that compared with prior art, in wireless power transmitter provided by the present application, series resonance ring directly uses city
Alternating current on power grid, does not need rectification and filtering；In addition, can be directly connected between signal source and signal amplification module, believe
Number can also be directly connected between amplification module and two-way votage control switch, need not to signal isolation, also need not to power supply every
From, it is only necessary to a low-tension supply, circuit very simple, and it is reliable and stable, debugging is very convenient, significantly reduces into
This.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of wireless power transmitter provided by the invention；
Fig. 2 is a kind of structural schematic diagram of wireless power transmitter provided by the invention；
Fig. 3 is the structural schematic diagram of another wireless power transmitter provided by the invention；
Fig. 4 is the structural schematic diagram of another wireless power transmitter provided by the invention；
Fig. 5 is a kind of structural schematic diagram of two-way votage control switch provided by the invention；
Fig. 6 is the structural schematic diagram of the two-way votage control switch of another kind provided by the invention；
Fig. 7 is a kind of structural schematic diagram of filter circuit provided by the invention.
Specific implementation mode
Core of the invention is to provide a kind of wireless power transmitter, circuit very simple, and reliable and stable, and debugging is very
It is convenient, significantly reduce cost.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Before introducing wireless power transmitter provided by the present application, series resonance ring is illustrated first：
Resonant ring：Working in the connection of the coil and capacitance under resonant condition, there are two types of connection types：Series connection and parallel connection, it is humorous
As soon as this combination by a coil and capacitance under state of shaking is referred to as resonant ring, the resonant ring being made of series system
It is series resonance ring.
Embodiment one
Fig. 1 is please referred to, Fig. 1 is a kind of structural schematic diagram of wireless power transmitter provided by the invention, including：
Signal source 1 for exporting PMW square waves；
It is connect with signal source 1, the signal amplification module 2 for being amplified to PWM square waves；
Connect respectively with signal source 1 and signal amplification module 2, for for signal source 1 and signal amplification module 2 power supply it is low
Voltage source 3；
It is understood that signal source 1 and signal amplification module 2 share a low-tension supply 3, need not be isolated.
High level control terminal P is connect with the output end of signal amplification module 2, low level control end G is grounded, two switch terminals
Two-way votage control switch 4 K1, K2 in parallel with the resonant capacitance C of series resonance ring 5 or resonance coil L, two-way votage control switch 4 are used
According to amplified PWM square waves be connected or be closed accordingly, and then the corresponding series resonance ring 5 that controls emits outward
Magnetic energy；
For alternating current to be converted to the series resonance ring 5 that magnetic energy is sent, both ends and the city of series resonance ring 5 are electrically connected
It connects.
Specifically, series resonance ring 5 here is connected in series by a resonant capacitance C and resonance coil L.Series resonance ring
5 and two-way votage control switch 4 constitute wireless power transmitter.
Two switch terminals K1, K2 of two-way votage control switch 4 can be in parallel with the resonant capacitance C of series resonance ring 5, specifically
Ground, as shown in Fig. 2, Fig. 2 is a kind of structural schematic diagram of wireless power transmitter provided by the invention；Or two-way votage control switch
4 two switch terminals K1, K2 are in parallel with the resonance coil L of series resonance ring 5, specifically, please refer to Fig. 3, Fig. 3 carries for the present invention
The structural schematic diagram of another wireless power transmitter supplied.Wherein, AC1 and AC2 indicates alternating current in figure.
The present invention determines for specifically selecting which kind of wireless power transmitter not to be particularly limited according to actual conditions.
In addition, the both ends of series resonance ring 5 are electrically connected with exchanging for utility grid respectively, directly use alternating current as transmitting
Power supply.
Below with regard to two switch terminals K1, K2 of two-way votage control switch 4 when in parallel with the resonant capacitance C of series resonance ring 5
The operation principle of wireless power transmitter explains：
Signal source 1 generates PWM square-wave signals and exports to signal amplification module 2, and signal amplification module 2 believes PWM square waves
Number amplification after output to two-way votage control switch 4 high level control terminal P, when the PWM square-wave signals that high level control terminal P is received
For high level when, two switch terminals K1, K2 conducting of two-way votage control switch 4, mains AC is applied directly to the two of resonance coil L
It holds, at this moment resonance coil L storing energies；When the PWM square-wave signals that high level control terminal P is received are low level, Bidirectional pressure
Two switch terminals K1, K2 for controlling switch 4 disconnect, and resonance coil L and the series resonance ring 5 of resonant capacitance C compositions press itself at this time
Intrinsic frequency generate resonance, convert electrical energy into magnetic energy, and externally emit by resonance coil L；The above process constantly recycles,
Energy constantly emits outward.
Below with regard to two switch terminals K1, K2 of two-way votage control switch 4 when in parallel with the resonance coil L of series resonance ring 5
The operation principle of wireless power transmitter explains：
Signal source 1 generates PWM square-wave signals and exports to signal amplification module 2, and signal amplification module 2 believes PWM square waves
Number amplification after output to two-way votage control switch 4 high level control terminal P, when the PWM square-wave signals that high level control terminal P is received
For high level when, two switch terminals K1, K2 conducting of two-way votage control switch 4, mains AC is applied directly to the two of resonant capacitance C
It holds, at this moment resonant capacitance C storing energies；When the PWM square-wave signals that high level control terminal P is received are low level, Bidirectional pressure
Two switch terminals K1, K2 for controlling switch 4 disconnect, and resonant capacitance C and the series resonance ring 5 of resonance coil L compositions press itself at this time
Intrinsic frequency generate resonance, convert electrical energy into magnetic energy, and externally emit by resonance coil L；The above process constantly recycles,
Energy constantly emits outward.
The present invention provides a kind of wireless power transmitters, include the signal source for exporting PMW square waves；Connect with signal source
It connects, the signal amplification module for being amplified to PWM square waves；Connect respectively with signal source and signal amplification module, for for
The low-tension supply of signal source and the power supply of signal amplification module；High level control terminal connect with the output end of signal amplification module, is low
Two-way in parallel with the resonant capacitance of series resonance ring or resonance coil of level control terminal ground connection, two switch terminals voltage-controlled opens
It closes, two-way votage control switch is used to according to amplified PWM square waves be connected or be closed accordingly, and then controls string accordingly
Connection resonant ring emits magnetic energy outward；For alternating current to be converted to the series resonance ring that magnetic energy is sent, the two of series resonance ring
The cities Duan Yu are electrically connected.
As it can be seen that compared with prior art, in wireless power transmitter provided by the present application, series resonance ring directly uses city
Alternating current on power grid, does not need rectification and filtering；In addition, can be directly connected between signal source and signal amplification module, believe
Number can also be directly connected between amplification module and two-way votage control switch, need not to signal isolation, also need not to power supply every
From, it is only necessary to a low-tension supply, circuit very simple, and it is reliable and stable, debugging is very convenient, significantly reduces into
This.
Embodiment two
Fig. 4 is please referred to, Fig. 4 is the structural schematic diagram of another wireless power transmitter provided by the invention, the present embodiment
The wireless power transmitter of offer is on the basis of embodiment one：
Preferably, two-way votage control switch 4 includes the first IGBT and the 2nd IGBT, wherein：
The grid of first IGBT is connect with the grid of the 2nd IGBT, and common end is as high level control terminal P；First IGBT
Emitter connect with the emitter of the 2nd IGBT, common end is as low level control end G；The collector of first IGBT and
Two switch terminals K1, K2 of the collector of 2nd IGBT respectively as two-way votage control switch 4.
Specifically, Fig. 5 is please referred to, Fig. 5 is a kind of structural schematic diagram of two-way votage control switch provided by the invention.
It is understood that selecting IGBT here to constitute two-way votage control switch 4, IGBT is small with driving power, switchs
The advantages of speed block and saturation pressure reduce.
Preferably, two-way votage control switch 4 includes the first NMOS and the 2nd NMOS, wherein：
The grid of first NMOS is connect with the grid of the 2nd NMOS, and common end is as high level control terminal P；First NMOS
Source electrode connect with the source electrode of the 2nd NMOS, common end is as low level control end G；The drain electrode and second of first NMOS
Two switch terminals K1, K2 of the drain electrode of NMOS respectively as two-way votage control switch 4.
Specifically, Fig. 6 is please referred to, Fig. 6 is the structural schematic diagram of the two-way votage control switch of another kind provided by the invention.
Specifically, the application can also select MOSFET to constitute two-way votage control switch 4, and MOSFET has driving power small
And the advantage that switching speed is fast.
In addition, the application is also an option that NPN triode to constitute two-way votage control switch 4, certainly, the application is for specific
It selects which kind of switching tube not limited particularly to constitute two-way votage control switch 4, is determined according to actual conditions.
Preferably, which further includes：
First end connect with the both ends of city's electrical connection, second end and series resonance ring 5, is flowed for filtering out series resonance ring 5
The filter circuit 6 of the high fdrequency component of series resonance ring 5 is flowed to the high fdrequency component and alternating current of alternating current.
It is understood that on the one hand, the transmitting of wireless power is actually the process of a high-frequency inversion, will produce one
Fixed High-frequency Interference；On the other hand, high frequency spurs component is also likely to be present in utility grid；In order to reduce wireless power transmitter
Influence to utility grid and utility grid to wireless power transmitter, the application are set between alternating current and series resonance ring 5
Filter circuit 6 is set, for filtering out high frequency spurs component.
Preferably, filter circuit 6 includes the first capacitance C1, is conjugated inductance B and the second capacitance C2, wherein：
The first end for being conjugated inductance B is in parallel with the first capacitance C1, the first end of common end in parallel as filter circuit 6；
The second end for being conjugated inductance B is in parallel with the second capacitance C2, the second end of common end in parallel as filter circuit 6.
Specifically, Fig. 7 is please referred to, Fig. 7 is a kind of structural schematic diagram of filter circuit 6 provided by the invention.
Preferably, the first capacitance C1 and the second capacitance C2 is X capacitances.
Specifically, X capacitances namely inhibition powered electromagnetic interfere electricity container, have the advantages that loss is small.Certainly, here
First capacitance C1 and the second capacitance C2 can also be other kinds of capacitance, and the present invention is not particularly limited herein, according to reality
Border situation is determined.
Preferably, signal amplification module 2 is operational amplifier.
Certainly, signal amplification module 2 here can also be made of other components, and the present invention does not do special limit herein
It is fixed.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.It should also be noted that, in this theory
In bright book, relational terms such as first and second and the like be used merely to by an entity or operation with another entity or
Operation distinguishes, without necessarily requiring or implying between these entities or operation there are any this actual relationship or
Sequentially.Moreover, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that
Process, method, article or equipment including a series of elements includes not only those elements, but also includes being not explicitly listed
Other element, or further include for elements inherent to such a process, method, article, or device.Do not limiting more
In the case of system, the element that is limited by sentence "including a ...", it is not excluded that including the element process, method,
There is also other identical elements in article or equipment.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (7)
1. a kind of wireless power transmitter, which is characterized in that including：
Signal source for exporting PWM square waves；
It is connect with the signal source, the signal amplification module for being amplified to the PWM square waves；
It is connect respectively with the signal source and the signal amplification module, for being the signal source and the signal amplification module
The low-tension supply of power supply；
High level control terminal connect with the output end of the signal amplification module, low level control end ground connection, two switch terminals with
The two-way votage control switch of resonant capacitance or the resonance coil parallel connection of series resonance ring, the two-way votage control switch are used for foundation and put
PWM square waves progress after big is connected or is closed accordingly, and then controls the circumferential outer transmitting magnetic energy of the series resonance accordingly；
For alternating current to be converted to the series resonance ring that magnetic energy is sent, both ends and the city of the series resonance ring
Electrical connection.
2. wireless power transmitter as described in claim 1, which is characterized in that the two-way votage control switch includes the first IGBT
With the 2nd IGBT, wherein：
The grid of first IGBT is connect with the grid of the 2nd IGBT, and common end is as the high level control terminal；
The emitter of first IGBT is connect with the emitter of the 2nd IGBT, and common end is as the low level control end；
The collector of first IGBT and the collector of the 2nd IGBT are opened respectively as two of the two-way votage control switch
Guan Duan.
3. wireless power transmitter as described in claim 1, which is characterized in that the two-way votage control switch includes the first NMOS
With the 2nd NMOS, wherein：
The grid of first NMOS is connect with the grid of the 2nd NMOS, and common end is as the high level control terminal；
The source electrode of first NMOS is connect with the source electrode of the 2nd NMOS, and common end is as the low level control end；It is described
Two switch terminals of the drain electrode of first NMOS and the drain electrode of the 2nd NMOS respectively as the two-way votage control switch.
4. wireless power transmitter as described in any one of claims 1-3, which is characterized in that the wireless power transmitter also wraps
It includes：
First end is electrically connected with the city, second end is connect with the both ends of the series resonance ring, humorous for filtering out the series connection
The circulation that shakes flows to the filter circuit of the high fdrequency component of the series resonance ring to the high fdrequency component of the alternating current and the alternating current.
5. wireless power transmitter as claimed in claim 4, which is characterized in that the filter circuit includes the first capacitance, is total to
Yoke inductance and the second capacitance, wherein：
The first end of the conjugation inductance is in parallel with first capacitance, common end in parallel as the filter circuit first
End；The second end of the conjugation inductance is in parallel with second capacitance, common end in parallel as the filter circuit second
End.
6. wireless power transmitter as claimed in claim 5, which is characterized in that first capacitance and second capacitance are equal
For X capacitances.
7. wireless power transmitter as described in claim 1, which is characterized in that the signal amplification module is operation amplifier
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610823086.7A CN106160025B (en) | 2016-09-14 | 2016-09-14 | A kind of wireless power transmitter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610823086.7A CN106160025B (en) | 2016-09-14 | 2016-09-14 | A kind of wireless power transmitter |
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| CN106160025A CN106160025A (en) | 2016-11-23 |
| CN106160025B true CN106160025B (en) | 2018-10-16 |
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| CN111147020A (en) * | 2020-01-16 | 2020-05-12 | 张雁 | High-power LC oscillating circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10136573A (en) * | 1996-10-28 | 1998-05-22 | Sanyo Electric Co Ltd | Charge system of electric vehicle |
| CN102545398A (en) * | 2012-01-20 | 2012-07-04 | 北京科技大学 | Non-contact power supply device for axle load electronic equipment in rotator |
| CN104284465A (en) * | 2013-07-11 | 2015-01-14 | 美的集团股份有限公司 | Intelligent control method of convection heating of multiple electromagnetic heating units and electromagnetic heating device |
| CN206004328U (en) * | 2016-09-14 | 2017-03-08 | 中惠创智无线供电技术有限公司 | A kind of wireless power transmitter |
-
2016
- 2016-09-14 CN CN201610823086.7A patent/CN106160025B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10136573A (en) * | 1996-10-28 | 1998-05-22 | Sanyo Electric Co Ltd | Charge system of electric vehicle |
| CN102545398A (en) * | 2012-01-20 | 2012-07-04 | 北京科技大学 | Non-contact power supply device for axle load electronic equipment in rotator |
| CN104284465A (en) * | 2013-07-11 | 2015-01-14 | 美的集团股份有限公司 | Intelligent control method of convection heating of multiple electromagnetic heating units and electromagnetic heating device |
| CN206004328U (en) * | 2016-09-14 | 2017-03-08 | 中惠创智无线供电技术有限公司 | A kind of wireless power transmitter |
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| CN106160025A (en) | 2016-11-23 |
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Effective date of registration: 20210317 Address after: 518000 room 133-134, No.1 International Students (Longgang) Pioneer Park, Longcheng street, Longgang District, Shenzhen City, Guangdong Province Patentee after: ZONECHARGE (SHENZHEN) WIRELESS POWER SUPPLY TECHNOLOGY Co.,Ltd. Address before: 264003 Mingda West Road, Laishan District, Yantai, Shandong Province, No. 11 Patentee before: ZHONG HUI POWERISE WIRELESS POWER TECHNOLOGY Ltd. |