CN106026423B - A kind of clipping control circuit and method - Google Patents
A kind of clipping control circuit and method Download PDFInfo
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- CN106026423B CN106026423B CN201610632944.XA CN201610632944A CN106026423B CN 106026423 B CN106026423 B CN 106026423B CN 201610632944 A CN201610632944 A CN 201610632944A CN 106026423 B CN106026423 B CN 106026423B
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- switch
- inductance
- circuit
- votage control
- control switch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
- H02M5/12—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion of voltage or current amplitude only
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- Electronic Switches (AREA)
Abstract
This application provides a kind of clipping control circuit and method, the circuit includes: resonance coil, resonant capacitance, switch and inductance；The inductance is connected with after the switch in parallel with the resonance coil, obtains the first circuit, first circuit and the resonant capacitance are in parallel or in series.When needing to provide stable voltage, the switch conduction is controlled, the inductance is short-circuited, and the inductance of circuit 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 inductance is connected with after the switch in parallel with the resonance coil, and the first circuit, first circuit are obtained
In parallel or in series with the resonant capacitance.
Preferably, the switch is votage control switch；
Wherein, a switch terminals of the votage control switch are connect with one end of the inductance, the votage control switch it is another
A switch terminals are connect with the common end of the inductance, the resonance coil；One end of the resonant capacitance and the resonance coil
It is not connected with one end connection of 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 inductance is connected with after the switch in parallel with the resonance coil, and the first circuit, first circuit are obtained
In parallel or in series with the resonant capacitance.When needing to provide stable voltage, the switch conduction, the inductance quilt are controlled
The inductance of short circuit, circuit changes, and then resonant state is changed, and is capable of providing stable voltage or electric current, solves driven
The problem of resonant ring 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 series resonance ring and parallel resonance ring in the present invention；
Fig. 2 is the structural schematic diagram of three end votage control switches in the present invention；
Fig. 3 is the structural schematic diagram of four end votage control switches in the present invention；
Fig. 4 is in the present invention using the structural schematic diagram of the resonant ring of three end votage control switches；
Fig. 5 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 circuits, comprising:
Resonance coil, resonant capacitance, switch and inductance；
The inductance is connected with after the switch in parallel with the resonance coil, and the first circuit, first circuit are obtained
In parallel or in series with the resonant capacitance.
Referring to Fig.1, in Fig. 1 in the circuit in left side, A, B indicate that two output ends of series resonance ring, arrow indicate magnetic field
Direction, K indicate that switch, C1 indicate that resonant capacitance, L1 indicate that resonance coil, L2 indicate inductance, resonant capacitance C1 and resonance coil
L1, inductance L2 form series resonance ring.
In Fig. 1 in the circuit on right side, A, B indicate that two output ends of parallel resonance ring, arrow indicate magnetic direction, K table
Show that switch, C1 indicate that resonant capacitance, L1 indicate that resonance coil, L2 indicate inductance, resonant capacitance C1 and resonance coil L1, inductance L2
Form parallel resonance ring.
When switch K is connected, the resistance of itself is at this moment zero or near zero is equivalent to inductance L2 and is short-circuited, circuit
Inductance necessarily changes, and can be calculated as follows:
Lt=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 series connection, Lt is greater than
L1, also greater than L2；
After switch K closure, inductance L2 is short-circuited, according to the calculation formula of resonance frequency:Circuit
Resonance frequency will change, original resonant state is destroyed, amplitude corresponding change, and output voltage is just different.
When inductance L2 is coil, especially when it and resonance coil L1 are in simultaneously in the same magnetic field, resonance coil
L1 is by the serious restriction by inductance L2, and when inductance L2 is short-circuited, the inductance of resonance coil L1 also significantly changes generation
Become, therefore, the resonance amplitude of resonant ring changes correspondingly, and the voltage exported from the both ends A, B also changes.
The course of work of each element in Fig. 1 are as follows:
After switch K closure, since inductance L2 is short-circuited, the original state of resonant ring is destroyed.Assuming that the original of resonant ring
Stateful is to maximize, that is, is in peak swing state, and when switch K is connected, the inductance of the first circuit reduces, optimum resonance
State is destroyed, amplitude decline；Conversely, it is in non-peak swing state if original state of resonant ring is not to maximize, when
When switch K is connected, the inductance of the first circuit reduces, and the resonant state of resonant ring is likely to occur one of following two phenomenon: or
Amplitude increases or amplitude reduces；In short, it is in parallel with switch K by the inductance L2, adjusting and control to amplitude may be implemented
System can export reasonable voltage, it is ensured that the normal work and safety of electric appliance if being used for the wireless power of terminal appliance.
Present embodiments provide a kind of clipping control circuit, the circuit include: resonance coil, resonant capacitance, switch and
Inductance；The inductance is connected with after the switch in parallel with the resonance coil, and the first circuit, first circuit and institute are obtained
State resonant capacitance in parallel or in series.When needing to provide stable voltage, the switch conduction is controlled, the inductance is short
The inductance on road, circuit changes, and then resonant state is changed, and is capable of providing stable voltage or electric current, is solved driven humorous
The problem of vibration ring job insecurity.
Optionally, in another embodiment of the present invention, the switch is votage control switch；
Wherein, a switch terminals of the votage control switch are connect with one end of the inductance, the votage control switch it is another
A switch terminals are connect with the common end of the inductance, the resonance coil；One end of the resonant capacitance and the resonance coil
It is not connected with one end connection of 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；
The votage control switch is two TRIAC pipe differential concatenations, two masters after described two TRIAC pipe differential concatenations
Electrode T2 is two switch terminals.
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-EffectTransistor), metal-oxide
Semiconductor field effect transistor is a kind of field-effect transistor that can be widely used in analog circuit and digital circuit.Three ends are double
It is substantially bi-directional thyristor to alternating-current switch TRIAC pipe, it is grown up on the basis of triode thyristor, it is not only
The thyristor of two reversed polarity parallel connections can be replaced, 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 2.
And Fig. 3.Wherein, what Fig. 2 was indicated is three end votage control switches, and what Fig. 3 was indicated is four end votage control switches.
Three end votage control switch S1 share 1,2,3 three end in Fig. 2, wherein 2 ends and 3 ends are two switch terminals, 1 end is control
End.There are three pole, respectively collector C, emitter E and gate pole G altogether for IGBT pipe.Also there are three poles for MOSFET pipe, respectively leak
Pole D, grid G and source 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.
Four end votage control switch S2 share 1,2,3,4 four end in Fig. 3, wherein 2,3 be two switch terminals, and 1,4 be two controls
End processed, wherein 4 ends are used to be grounded.The four ends votage control switch S2 is that two IGBT pipe differential concatenations or two MOSFET pipes are anti-
To series connection or two TRIAC pipe differential concatenations.
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 switch S1 or four end votage control switch S2, control terminal 1 is used to control
The on-off of votage control switch.
Votage control switch and inductance L2, resonance coil L1 and resonant capacitance C1 are described referring to Fig. 4 and Fig. 5, Fig. 4 and Fig. 5
Connection relationship.
In Fig. 4, C1 indicates that resonant capacitance, L1 indicate that resonance coil, L2 indicate that inductance, S1 indicate three end votage control switches, A, B
Indicate that two output ends, arrow indicate magnetic field.A switch terminals of the three ends votage control switch S1 and one end of the inductance L2
Connection, another switch terminals of the three ends votage control switch S1 are connect with the common end of the inductance L2, the resonance coil L1；
One end of the resonant capacitance C1 is connect with the one end for being not connected with the inductance L2 the resonance coil L1.
It connects after the inductance L2 is in parallel with the three ends votage control switch S1 with the resonance coil L1, obtains the first electricity
Road, first circuit and the resonant capacitance C1 are in parallel or in series.
In Fig. 5, C1 indicates that resonant capacitance, L1 indicate that resonance coil, L2 indicate that inductance, S2 indicate four end votage control switches, A, B
Indicate that two output ends, arrow indicate magnetic field.A switch terminals of the four ends votage control switch S2 and one end of the inductance L2
Connection, another switch terminals of the four ends votage control switch S2 are connect with the common end of the inductance L2, the resonance coil L1；
One end of the resonant capacitance C1 is connect with the one end for being not connected with the inductance L2 the resonance coil L1.
It connects after the inductance L2 is in parallel with the four ends votage control switch S2 with the resonance coil L1, obtains the first electricity
Road, first circuit and the resonant capacitance C1 are in parallel or in series.
Three end votage control switch S1 are suitable for halfwave rectifier, and therefore, one end of the inductance L2 must be used as " ground "；Four side pressures
It controls switch S2 and is suitable for full-wave rectification, the both ends of the inductance L2 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 switch S2.
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, is applied to above-mentioned clipping control circuit, institute
The method of stating includes:
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 control terminal input high level, two switch terminals conductings connect when switch is votage control switch
The resistance that is powered is zero or close to zero, and inductance is short-circuited, and original resonant state is changed, and amplitude changes.When control terminal is low electricity
Usually, two switch terminal shortcircuits, offresistance is infinitely great, restores original resonant state, and amplitude changes.
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
It switches on-off, when votage control switch conducting, connection resistance is zero or close to zero, and inductance is short-circuited, original resonant state
It is changed, amplitude changes.When votage control switch shutdown, offresistance is infinitely great, restores original resonant state, and 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 inductance is short-circuited, and the inductance of circuit changes, and then resonant state is changed, can
Stable voltage or electric current are provided, 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 inductance is connected with after the switch in parallel with the resonance coil, and the first circuit, first circuit and institute are obtained
State resonant capacitance in parallel or in series；
When the switch is closed, the inductance is short-circuited, the resonance coil and the resonant capacitance resonance；
When the switch disconnects, the inductance is not short-circuited, and the resonance coil, the resonant capacitance and the inductance are humorous
Vibration.
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 inductance, and another of the votage control switch is opened
The common end connection of inductance described in Guan Duanyu, the resonance coil；One end of the resonant capacitance does not connect with the resonance coil
Connect one end connection of 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 |
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| CN201610632944.XA CN106026423B (en) | 2016-08-04 | 2016-08-04 | A kind of clipping control circuit and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610632944.XA CN106026423B (en) | 2016-08-04 | 2016-08-04 | A kind of clipping control circuit and method |
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| Publication Number | Publication Date |
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| CN106026423A CN106026423A (en) | 2016-10-12 |
| CN106026423B true CN106026423B (en) | 2019-04-09 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451705B (en) * | 2016-12-20 | 2019-02-12 | 北京小米移动软件有限公司 | Electronic equipment, wireless charging system, equipment, method and apparatus |
| CN111342568B (en) * | 2020-03-30 | 2021-05-25 | 重庆理工大学 | Series-parallel resonance convertible wireless charging transmitting circuit and control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202524175U (en) * | 2012-04-24 | 2012-11-07 | 朱斯忠 | Three-dimensional wireless power supply |
| CN206023385U (en) * | 2016-08-04 | 2017-03-15 | 中惠创智无线供电技术有限公司 | A kind of amplitude limit control circuit |
-
2016
- 2016-08-04 CN CN201610632944.XA patent/CN106026423B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202524175U (en) * | 2012-04-24 | 2012-11-07 | 朱斯忠 | Three-dimensional wireless power supply |
| CN206023385U (en) * | 2016-08-04 | 2017-03-15 | 中惠创智无线供电技术有限公司 | A kind of amplitude limit control circuit |
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Effective date of registration: 20210318 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. |