CN106059114B - A kind of clipping control circuit and method - Google Patents
A kind of clipping control circuit and method Download PDFInfo
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- CN106059114B CN106059114B CN201610634921.2A CN201610634921A CN106059114B CN 106059114 B CN106059114 B CN 106059114B CN 201610634921 A CN201610634921 A CN 201610634921A CN 106059114 B CN106059114 B CN 106059114B
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- pipe
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Abstract
This application provides a kind of clipping control circuit and method, the circuit includes: resonance coil, resonant capacitance, switch and inductance；The resonance coil and the resonant capacitance are in parallel or in series；It is in parallel with the resonance coil after the inductance and switch series connection.When needing to provide stable voltage, the switch conduction, the resonance coil and the inductance in parallel are controlled, inductance changes, and then resonant state is changed, and is capable of providing stable voltage or electric current, solves the problems, such as driven resonant ring job insecurity.
Description
Technical field
The present invention relates to wireless power fields, more specifically, being related to a kind of clipping control circuit and method.
Background technique
Driven resonant ring has the double grading for receiving energy and emitted energy, in the terminal of wireless power, from dynamic resonance
Ring Chang Dangzuo receives resonant ring and uses, and powers for terminal appliance.
Since driven resonant ring works in resonant state, the voltage and current amplitude in resonant ring is very big and unstable,
If powered directly to terminal appliance, huge electric current and voltage fluctuation can be generated, serious influence can be brought to terminal appliance,
Electric appliance can even be burnt.
Therefore, a kind of amplitude for controlling driven resonance loop voltag or electric current is needed, guarantees driven resonant ring the operation is stable
Circuit.
Summary of the invention
In view of this, the present invention provides a kind of clipping control circuit and method, to solve driven resonant ring job insecurity
The problem of.
In order to solve the above technical problems, present invention employs following technical solutions:
A kind of clipping control circuit, comprising:
Resonance coil, resonant capacitance, switch and inductance；
The resonance coil and the resonant capacitance are in parallel or in series；The inductance and the switch series connection after with it is described
Resonance coil is in parallel.
Preferably, the switch is votage control switch；
Wherein, a switch terminals of the votage control switch are connect with one end of the resonance coil, the votage control switch
Another switch terminals is connect with one end of the inductance, and the other end of the inductance is connect with the other end of the resonance coil,
One end of the resonant capacitance is connect with the common end of the resonance coil, the inductance.
Preferably, the votage control switch is IGBT pipe, and the collector and emitter of the IGBT pipe is two switch terminals.
Preferably, the votage control switch is MOSFET pipe, and the drain electrode of the MOSFET pipe and source electrode are two switch terminals.
Preferably, the votage control switch is TRIAC pipe, and the main electrode T1 and main electrode T2 of the TRIAC pipe are two and open
Guan Duan.
Preferably, the votage control switch is two IGBT pipe differential concatenations, after described two IGBT pipe differential concatenations
Two current collections extremely two switch terminals.
Preferably, the votage control switch be two MOSFET pipe differential concatenations, described two MOSFET pipe differential concatenations it
Two drain electrodes afterwards are two switch terminals.
Preferably, the votage control switch is two TRIAC pipe differential concatenations, after described two TRIAC pipe differential concatenations
Two main electrode T2 be two switch terminals.
A kind of limiting control method, applied to clipping control circuit described in above-mentioned any one, which comprises
When needing to provide stable voltage, the switch conduction is controlled.
Preferably, the control switch conduction, specifically includes:
By the way of manual off switch, the mode of the mode of input low and high level or pulse width modulation control it is described
Switch conduction.
Compared to the prior art, the invention has the following advantages:
The present invention provides a kind of clipping control circuit and method, the circuit includes: resonance coil, resonant capacitance, opens
Pass and inductance；The resonance coil and the resonant capacitance are in parallel or in series；The inductance and the switch series connection after with institute
State resonance coil parallel connection.When needing to provide stable voltage, the switch conduction, the resonance coil and the inductance are controlled
Parallel connection, inductance changes, and then resonant state is changed, and is capable of providing stable voltage or electric current, solves driven resonant ring
The problem of job insecurity.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structural schematic diagram of the series resonance ring in the present invention；
Fig. 2 is the structural schematic diagram of the parallel resonance ring in the present invention；
Fig. 3 is the structural schematic diagram of three end votage control switches in the present invention；
Fig. 4 is the structural schematic diagram of four end votage control switches in the present invention；
Fig. 5 is in the present invention using the structural schematic diagram of the resonant ring of three end votage control switches；
Fig. 6 is in the present invention using the structural schematic diagram of the resonant ring of four end votage control switches.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of clipping control circuit, the circuit includes:
Resonance coil, resonant capacitance, switch and inductance；
The resonance coil and the resonant capacitance are in parallel or in series；The inductance and the switch series connection after with it is described
Resonance coil is in parallel.
Referring to Figures 1 and 2, Fig. 1 and Fig. 2 describes the connection relationship of the element of clipping control circuit.
In Fig. 1, A, B indicate that two output ends of series resonance ring, arrow indicate that magnetic direction, K indicate that switch, C1 indicate
Resonant capacitance, L1 indicate that resonance coil, L2 indicate that inductance, resonant capacitance C1 and resonance coil L1 form series resonance ring.
In Fig. 2, A, B indicate that two output ends of parallel resonance ring, arrow indicate that magnetic direction, K indicate that switch, C1 indicate
Resonant capacitance, L1 indicate that resonance coil, L2 indicate that inductance, resonant capacitance C1 and resonance coil L1 form parallel resonance ring.
When switch K is connected, the resistance of itself is at this moment zero or near zero is equivalent to resonance coil L1 and inductance L2
Parallel connection, inductance necessarily emit variation, can be calculated as follows:
1/Lt=1/L1+1/L2
Lt=(L1*L2)/(L1+L2)
Lt is total inductance amount in formula, and L1 is the inductance of resonance coil, and L2 is the inductance of inductance, and after in parallel, Lt is less than
L1, again smaller than L2；
According to the calculation formula of resonance frequency:The resonance frequency of system will change, original
Resonant state is destroyed, amplitude corresponding change, and output voltage is just different.
The course of work of each element in Fig. 1 and Fig. 2 are as follows:
When switch K closure, resonance coil L1 is in parallel with inductance L2, and due to the variation of inductance, series resonance ring is original
State be destroyed.Assuming that original state of series resonance ring is to maximize, that is, it is in peak swing state, when switch K is connected
When, the inductance after resonance coil L1 is in parallel with inductance L2 reduces, and optimum resonant state is destroyed, amplitude decline；Conversely, if string
Join resonant ring original state be not maximize, that is, be in non-peak swing state, when switch K connect when, resonance coil L1 and
Inductance after inductance L2 is in parallel reduces, and the resonant state of series resonance ring is likely to occur following two phenomenon: or amplitude increases,
Or amplitude reduces.In short, inductance L2 is in parallel with resonance coil L1 after connecting with switch K, adjusting and control to amplitude may be implemented
System, when the wireless power for terminal appliance, can export reasonable voltage, it is ensured that the normal work of electric appliance.
Present embodiments provide a kind of clipping control circuit, the circuit include: resonance coil, resonant capacitance, switch and
Inductance；The resonance coil and the resonant capacitance are in parallel or in series；The inductance and the switch series connection after with it is described humorous
Shake coils from parallel connection of coils.When needing to provide stable voltage, the switch conduction is controlled, the resonance coil and the inductance are simultaneously
Connection, inductance changes, and then resonant state is changed, and is capable of providing stable voltage or electric current, solves driven resonant ring work
Make unstable problem.
Optionally, in another embodiment of the present invention, the switch K is votage control switch；
Wherein, a switch terminals of the votage control switch are connect with one end of the resonance coil, the votage control switch
Another switch terminals is connect with one end of the inductance, and the other end of the inductance is connect with the other end of the resonance coil,
One end of the resonant capacitance is connect with the common end of the resonance coil, the inductance.
Specifically, the votage control switch is IGBT pipe, the collector and emitter of the IGBT pipe is two switch terminals；Institute
Votage control switch is stated as MOSFET pipe, the drain electrode of the MOSFET pipe and source electrode are two switch terminals；The votage control switch is TRIAC
Pipe, the main electrode T1 and main electrode T2 of the TRIAC pipe are two switch terminals；The votage control switch is two reversed strings of IGBT pipe
Join, two current collections extremely two switch terminals after described two IGBT pipe differential concatenations；The votage control switch is two
MOSFET pipe differential concatenation, two drain electrodes after described two MOSFET pipe differential concatenations are two switch terminals；It is described voltage-controlled
Switch is two TRIAC pipe differential concatenations, and two main electrode T2 after described two TRIAC pipe differential concatenations are two switches
End.
One IGBT pipe, MOSFET pipe or TRIAC pipe are a three end votage control switches, two IGBT pipe differential concatenations, two
A MOSFET pipe differential concatenation or two TRIAC pipe differential concatenations are a four end votage control switches.
Wherein, IGBT manages (Insulated Gate Bipolar Transistor), and insulated gate bipolar transistor is
It is partly led by the compound full-control type voltage driven type power that BJT (double pole triode) and MOS (insulating gate type field effect tube) are formed
Body device.MOSFET manages (Metal-Oxide-Semiconductor Field-Effect Transistor), metal-oxide
Object semiconductor field effect transistor is a kind of field-effect transistor that can be widely used in analog circuit and digital circuit.Three ends
Two-way exchange switch TRIAC pipe is substantially bi-directional thyristor, it is grown up on the basis of triode thyristor, it is not
It is only capable of the thyristor instead of two reversed polarity parallel connections, and only with a trigger circuit.
In order to make those skilled in the art more be apparent from the votage control switch in the present invention, referring to figure 3.
And Fig. 4.Wherein, what Fig. 3 was indicated is three end votage control switches, and what Fig. 4 was indicated is four end votage control switches.
1,2,3 three end is shared in Fig. 3, wherein 2 ends and 3 ends are two switch terminals, 1 end is control terminal.IGBT pipe is shared
Three poles, respectively collector C, emitter E and gate pole G.Also there are three poles, respectively drain D, grid G and source for MOSFET pipe
Pole S.Three poles of TRIAC pipe are respectively main electrode T1, main electrode T2 and grid G.
When three end votage control switch S1 are IGBT pipe, foot position corresponding relationship are as follows: 1-G, 2-C, 3-E；When three end votage control switches
When S1 is MOSFET pipe, foot position corresponding relationship are as follows: 1-G, 2-D, 3-S；When three end votage control switch S1 are TRIAC pipe, foot position is right
It should be related to are as follows: 1-G, 2-T2,3-T1.
1,2,3,4 four end is shared in Fig. 4, wherein 2,3 be two switch terminals, and 1,4 be two control terminals, wherein 4 ends
For being grounded.The four ends votage control switch S2 is two IGBT pipe differential concatenations or two MOSFET pipe differential concatenations or two
TRIAC pipe differential concatenation.
Specifically, when four end votage control switch S2 are two IGBT pipe differential concatenations, foot position corresponding relationship are as follows: 1-G, 2-C,
3-C, 4-E, when four end votage control switch S2 be two MOSFET pipe differential concatenations when, foot position corresponding relationship are as follows: 1-G, 2-D, 3-D,
4-S, when four end votage control switch S2 are two TRIAC pipe differential concatenations, foot position corresponding relationship are as follows: 1-G, 2-T2,3-T2,4-
T1。
It should be noted that either three end votage control switches or four end votage control switches, control terminal 1 is used to control voltage-controlled
It switches on-off.
Referring to figure 5 and figure 6, Fig. 5 and Fig. 6 describes votage control switch and inductance L2, resonance coil L1 and resonant capacitance C1
Connection relationship.
In Fig. 5, C1 indicates that resonant capacitance, L1 indicate that resonance coil, L2 indicate inductance, resonant capacitance C1 and resonance coil L1
Series resonance ring or parallel resonance ring are formed, S1 indicates that three end votage control switches, A, B indicate two output ends.Three end votage control switches
A switch terminals of S1 are connect with one end of resonance coil L1, and are grounded, another switch terminals of three end votage control switch S1 with
One end of inductance L2 connects, and the other end of inductance L2 is connect with the other end of resonance coil L1, one end of the resonant capacitance C1
It is connect with the common end of the resonance coil L1, the inductance L2.
In Fig. 6, C1 indicates that resonant capacitance, L1 indicate that resonance coil, L2 indicate inductance, resonant capacitance C1 and resonance coil L1
Series resonance ring or parallel resonance ring are formed, S2 indicates that four end votage control switches, A, B indicate two output ends.Four end votage control switches
A switch terminals of S2 are connect with one end of resonance coil L1, another switch terminals of four end votage control switch S2 and the one of inductance L2
End connection, the other end of inductance L2 are connect with the other end of resonance coil L1, one end of the resonant capacitance C1 and the resonance
The common end connection of coil L1, the inductance L2.
Three end votage control switch S1 are suitable for halfwave rectifier, and therefore, one end of resonance coil L1 must be used as " ground "；Four side pressures
It controls switch S2 and is suitable for full-wave rectification, the both ends of resonance coil L1 do not connect " ground ", and it can be selected and exported from the both ends A, B, rectification filter
Cathode after wave is used as " ground ", while " ground " of the input terminal as four end votage control switches.
In the present embodiment, the votage control switch is IGBT pipe or MOSFET pipe or TRIAC pipe or the votage control switch is
Two IGBT pipe differential concatenations or two MOSFET pipe differential concatenations or two TRIAC pipe differential concatenations.Selection mode is more, can
To be selected according to different situations.
In another embodiment of the present invention, a kind of limiting control method is provided, which is characterized in that be applied to above-mentioned clipping
Control circuit, which comprises
When needing to provide stable voltage, the switch conduction is controlled.
Specifically, the control switch conduction, specifically includes:
By the way of manual off switch, the mode of the mode of input low and high level or pulse width modulation control it is described
Switch conduction.
When switch is not votage control switch, switch conduction can be made by the way of manual off switch.When switch is pressure
When control switch, by the way of inputting low and high level or the mode of pulse width modulation controls the switch conduction.
It should be noted that when controlling the switch conduction, concrete principle by the way of inputting low and high level are as follows:
When switch is votage control switch, when control terminal input high level, two switch terminals conductings connect resistance and are zero or approach
In zero, resonance coil L1 and inductance L2 are in parallel, and original resonant state is changed, and amplitude changes.When control terminal is low level,
Two switch terminal shortcircuits, offresistance is infinitely great, restores original resonant state, and amplitude changes.
The switch conduction, concrete principle are controlled by the way of modulating using pulse width are as follows:
By the way of pulse width modulation i.e. in switch terminals input pulse width modulated signal, thus it is possible to vary voltage-controlled to open
The on-off of pass, when votage control switch conducting, connection resistance is zero or close to zero, and resonance coil L1 and inductance L2 are in parallel, original
Resonant state be changed, amplitude change.When votage control switch shutdown, offresistance is infinitely great, restores original resonant state,
Amplitude changes.
In the present embodiment, by using the mode of manual off switch, the mode or pulse width tune of input low and high level
The mode of system controls the switch conduction, and then keeps resonance coil L1 and inductance L2 in parallel, and inductance changes, and then resonant state
It is changed, is capable of providing stable voltage or electric current, solve the problems, such as driven resonant ring job insecurity.
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 readily 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 scope of cause.
Claims (10)
1. a kind of clipping control circuit characterized by comprising
Resonance coil, resonant capacitance, switch and inductance；
The resonance coil and the resonant capacitance are in parallel or in series；The inductance and the switch series connection after with the resonance
Coils from parallel connection of coils；
When the switch disconnects, the inductance is switched off, and the resonance coil and the resonant capacitance form resonant ring；
When the switch connection, the inductance is not switched off, the resonance coil, the resonant capacitance and inductance composition
Resonant ring.
2. circuit according to claim 1, which is characterized in that the switch is votage control switch；
Wherein, a switch terminals of the votage control switch are connect with one end of the resonance coil, the votage control switch it is another
A switch terminals are connect with one end of the inductance, and the other end of the inductance is connect with the other end of the resonance coil, described
One end of resonant capacitance is connect with the common end of the resonance coil, the inductance.
3. circuit according to claim 2, which is characterized in that the votage control switch is IGBT pipe, the collection of the IGBT pipe
Electrode and transmitting extremely two switch terminals.
4. circuit according to claim 2, which is characterized in that the votage control switch is MOSFET pipe, the MOSFET pipe
Drain electrode and source electrode be two switch terminals.
5. circuit according to claim 2, which is characterized in that the votage control switch is TRIAC pipe, the TRIAC pipe
Main electrode T1 and main electrode T2 is two switch terminals.
6. circuit according to claim 2, which is characterized in that the votage control switch is two IGBT pipe differential concatenations, institute
State two current collections extremely two switch terminals after two IGBT pipe differential concatenations.
7. circuit according to claim 2, which is characterized in that the votage control switch is two MOSFET pipe differential concatenations,
Two drain electrodes after described two MOSFET pipe differential concatenations are two switch terminals.
8. circuit according to claim 2, which is characterized in that the votage control switch is two TRIAC pipe differential concatenations, institute
Stating two main electrode T2 after two TRIAC pipe differential concatenations is two switch terminals.
9. a kind of limiting control method, which is characterized in that applied to the clipping control as described in claim 1~8 any one
Circuit, which comprises
When needing to provide stable voltage, the switch conduction is controlled.
10. according to the method described in claim 9, it is characterized in that, the control switch conduction, specifically includes:
By the way of manual off switch, input low and high level mode or pulse width modulation mode control the switch
Conducting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610634921.2A CN106059114B (en) | 2016-08-04 | 2016-08-04 | A kind of clipping control circuit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610634921.2A CN106059114B (en) | 2016-08-04 | 2016-08-04 | A kind of clipping control circuit and method |
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| CN106059114A CN106059114A (en) | 2016-10-26 |
| CN106059114B true CN106059114B (en) | 2019-04-09 |
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| US20180233955A1 (en) * | 2017-02-15 | 2018-08-16 | Samsung Electro-Mechanics Co., Ltd. | Wireless power transmitter |
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| US8121618B2 (en) * | 2009-10-28 | 2012-02-21 | Digimarc Corporation | Intuitive computing methods and systems |
| CN202524175U (en) * | 2012-04-24 | 2012-11-07 | 朱斯忠 | Three-dimensional wireless power supply |
| CN205921461U (en) * | 2016-08-04 | 2017-02-01 | 中惠创智无线供电技术有限公司 | Limitation control circuit |
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Effective date of registration: 20210330 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 TECHNOLOGY Co.,Ltd. Address before: 264003 Mingda West Road, Laishan District, Yantai, Shandong Province, No. 11 Patentee before: ZONECHARGE WIRELESS POWER TECHNOLOGY Co.,Ltd. |
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Denomination of invention: A limiting control circuit and method Granted publication date: 20190409 Pledgee: Huishang Bank Co.,Ltd. Fuyang Yingquan Branch Pledgor: ZONECHARGE (SHENZHEN) WIRELESS POWER TECHNOLOGY Co.,Ltd. Registration number: Y2024980029765 |