CN206023385U - A kind of amplitude limit control circuit - Google Patents
A kind of amplitude limit control circuit Download PDFInfo
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- CN206023385U CN206023385U CN201620841306.4U CN201620841306U CN206023385U CN 206023385 U CN206023385 U CN 206023385U CN 201620841306 U CN201620841306 U CN 201620841306U CN 206023385 U CN206023385 U CN 206023385U
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- votage control
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Abstract
This application provides a kind of amplitude limit control circuit, the circuit includes：Resonance coil, resonant capacitance, switch and inductance；The inductance is connected with the resonance coil with after the switch in parallel, obtains the first circuit, and first circuit is with the resonant capacitance in parallel or in series.When needing to provide stable voltage, the switch conduction is controlled, the inductance is shorted, the inductance value of circuit changes, and then resonant condition is changed, using the teaching of the invention it is possible to provide stable voltage or electric current, solves the problems, such as driven resonant ring job insecurity.
Description
Technical field
This utility model is related to wireless power field, in particular, is related to a kind of amplitude limit control circuit.
Background technology
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 is that terminal appliance is powered.
As driven resonant ring works in resonant condition, the voltage and current amplitude in resonant ring is very big and unstable,
If powered directly to terminal appliance, huge electric current and voltage pulsation can be produced, serious impact can be brought to terminal appliance,
Even electrical equipment can be burnt.
Therefore, the amplitude of a kind of driven resonance loop voltag of control or electric current is needed badly, it is ensured that driven resonant ring working stability
Circuit.
Utility model content
For solving above-mentioned technical problem, this utility model provides a kind of amplitude limit control circuit.
For achieving the above object, this utility model provides following technical scheme：
A kind of amplitude limit control circuit, including：
Resonance coil, resonant capacitance, switch and inductance；
The inductance is connected with the resonance coil with after the switch in parallel, obtains the first circuit, first circuit
With the resonant capacitance in parallel or in series.
Preferably, the switch is votage control switch；
Wherein, switch terminals of the votage control switch are connected with one end of the inductance, the votage control switch another
Individual switch terminals are connected with the common port 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 managed for IGBT, and the collector and emitter of the IGBT pipes is two switch terminals.
Preferably, the votage control switch is managed for MOSFET, and the drain electrode of the MOSFET pipes and source electrode are two switch terminals.
Preferably, the votage control switch is managed for TRIAC, and main electrode T1 and main electrode T2 of the TRIAC pipes are opened for two
Guan Duan.
Preferably, the votage control switch is two IGBT pipe differential concatenations, after described two IGBT pipes differential concatenations
Extremely two switch terminals of two current collections.
Preferably, the votage control switch be two MOSFET pipe differential concatenations, described two MOSFET pipes 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 pipes differential concatenations
Two main electrodes T2 be two switch terminals.
From above-mentioned technical proposal as can be seen that this utility model provides a kind of amplitude limit control circuit, the circuit includes：
Resonance coil, resonant capacitance, switch and inductance；The inductance is connected with the resonance coil with after the switch in parallel, is obtained
First circuit, first circuit is with the resonant capacitance in parallel or in series.When needing to provide stable voltage, institute is controlled
Switch conduction is stated, the inductance is shorted, the inductance value of circuit changes, and then resonant condition is changed, using the teaching of the invention it is possible to provide stable
Voltage or electric current, solve the problems, such as driven resonant ring job insecurity.
Description of the drawings
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are only
It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to the accompanying drawing for providing.
Figure 1A is the structural representation of series resonance ring in this utility model；
Figure 1B is the structural representation of parallel resonance ring in this utility model；
Fig. 2A is a kind of structural representation of the three end votage control switch in this utility model；
Fig. 2 B are the structural representation of the three end votage control switch of another kind in this utility model；
Fig. 2 C are the structural representation of the third the three ends votage control switch in this utility model；
Fig. 2 D are the structural representation of the 4th kind of three end votage control switch in this utility model；
Fig. 3 A are a kind of structural representation of the four end votage control switch in this utility model；
Fig. 3 B are the structural representation of the four end votage control switch of another kind in this utility model；
Fig. 3 C are the structural representation of the third the four ends votage control switch in this utility model；
Fig. 3 D are the structural representation of the 4th kind of four end votage control switch in this utility model；
Fig. 4 A are a kind of structural representation of the resonant ring of three end votage control switches of application in this utility model；
Fig. 4 B are the structural representation of the resonant ring of three end votage control switches of another kind of application in this utility model；
Fig. 5 A are a kind of structural representation of the resonant ring of four end votage control switches of application in this utility model；
Fig. 5 B are the structural representation of the resonant ring of four end votage control switches of another kind of application in this utility model.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole
Embodiment.Embodiment in based on this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
This utility model provides a kind of amplitude limit control circuit, including：
Resonance coil, resonant capacitance, switch and inductance；
The inductance is connected with the resonance coil with after the switch in parallel, obtains the first circuit, first circuit
With the resonant capacitance in parallel or in series.
With reference to Figure 1A and Figure 1B, Tu1AZhong, A, B represent that two outfans of series resonance ring, arrow represent magnetic direction,
K represents that switch, C1 represent that resonant capacitance, L1 represent that resonance coil, L2 represent inductance, resonant capacitance C1 and resonance coil L1, electricity
Sense L2 composition series resonance rings.
In Figure 1B, A, B represent that two outfans of parallel resonance ring, arrow represent that magnetic direction, K represent switch, C1 tables
Show that resonant capacitance, L1 represent that resonance coil, L2 represent inductance, resonant capacitance C1 is in parallel humorous with resonance coil L1, inductance L2 composition
Shake ring.
When K connections are switched, the resistance of itself is zero or is close to zero, at this moment, is shorted equivalent to inductance L2, circuit
Inductance value necessarily changes, and can be calculated as follows：
Lt=L1+L2
In formula, Lt is total inductance amount, and L1 is the inductance value of resonance coil, and L2 is the inductance value of inductance, and after series connection, Lt is more than
L1, also greater than L2；
After K closures are switched, inductance L2 is shorted, according to the computing formula of resonant frequency：Circuit
Resonant frequency will change, original resonant condition is destroyed, amplitude respective change, and output voltage is just different.
When inductance L2 is coil, particularly when it is simultaneously in same magnetic field with resonance coil L1, resonance coil
L1 will be subject to the serious restriction of inductance L2, and when inductance L2 is shorted, the inductance value of resonance coil L1 will also occur significantly to change
Become, therefore, the resonance amplitude of resonant ring changes therewith, also change from the voltage of A, B two ends output.
In Figure 1A and Figure 1B, the course of work of each element is：
After K closures are switched, as inductance L2 is shorted, the original state of resonant ring is destroyed.Assume the original of resonant ring
It is to maximize to have state, that is, be in peak swing state, and when K connections are switched, the inductance value of the first circuit reduces, optimum resonance
State is destroyed, and amplitude declines；If conversely, original state of resonant ring is not to maximize, that is, being in non-peak swing state, when
When switch K is connected, the inductance value of the first circuit reduces, and the resonant condition of resonant ring is likely to occur one of following two phenomenons：Or
Amplitude is increased, or amplitude reduces；In a word, in parallel with switch K by the inductance L2, it is possible to achieve the regulation and control to amplitude
System, if for the wireless power of terminal appliance, can export rational voltage, it is ensured that the normal work and safety of electrical equipment.
A kind of amplitude limit control circuit is present embodiments provided, the circuit includes：Resonance coil, resonant capacitance, switch and
Inductance；The inductance is connected with the resonance coil with after the switch in parallel, obtains the first circuit, first circuit and institute
State resonant capacitance in parallel or in series.When needing to provide stable voltage, the switch conduction is controlled, the inductance is short
Road, the inductance value of circuit change, and then resonant condition is changed, using the teaching of the invention it is possible to provide stable voltage or electric current, solve driven humorous
Shake the problem of ring job insecurity.
Optionally, in another embodiment of the present utility model, the switch is votage control switch；
Wherein, switch terminals of the votage control switch are connected with one end of the inductance, the votage control switch another
Individual switch terminals are connected with the common port 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 managed for IGBT, and the collector and emitter of the IGBT pipes is two switch terminals；Institute
State votage control switch to manage for MOSFET, the drain electrode of the MOSFET pipes and source electrode are two switch terminals；The votage control switch is TRIAC
Pipe, main electrode T1 and main electrode T2 of the TRIAC pipes are two switch terminals；The votage control switch is that two IGBT pipes are reversely gone here and there
Connection, extremely two switch terminals of two current collections after described two IGBT pipes differential concatenations；The votage control switch is two
MOSFET pipe differential concatenations, two drain electrodes after described two MOSFET pipes differential concatenations are two switch terminals；
The votage control switch be two TRIAC pipe differential concatenations, two masters after described two TRIAC pipes differential concatenations
Electrode T2 is two switch terminals.
One IGBT pipe, MOSFET pipes or TRIAC pipes are three end votage control switches, two IGBT pipe differential concatenations, two
Individual MOSFET pipes differential concatenation or two TRIAC pipes differential concatenations are four end votage control switches.
Wherein, IGBT pipes (Insulated Gate Bipolar Transistor), insulated gate bipolar transistor is
The compound full-control type voltage driven type power being made up of BJT (double pole triode) and MOS (insulating gate type field effect tube) is partly led
Body device.MOSFET manages (Metal-Oxide-Semiconductor Field-Effect Transistor), metal-oxide
Thing 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 pipes are substantially bi-directional IGCT, and it grows up on the basis of triode thyristor, and it is not
The IGCT for replacing two reversed polarity in parallel is only capable of, and only with a triggers circuit.
In order to the votage control switch for making those skilled in the art more be apparent from this utility model, refer to
Fig. 2A, Fig. 2 B, Fig. 2 C, Fig. 2 D, Fig. 3 A, Fig. 3 B, Fig. 3 C and Fig. 3 D.Wherein, what Fig. 2A, Fig. 2 B, Fig. 2 C and Fig. 2 D were represented is three
End votage control switch, what Fig. 3 A, Fig. 3 B, Fig. 3 C and Fig. 3 D were represented is four end votage control switches.
In Fig. 2A, three end votage control switch S1 have 1,2,3 three ends, and wherein 2 ends and 3 ends are two switch terminals, and 1 end is control
End processed.IGBT pipes have three poles, respectively colelctor electrode C, emitter E and gate pole G.MOSFET pipes also have three poles, respectively
Drain D, grid G and source S.Three poles of TRIAC pipes are respectively main electrode T1, main electrode T2 and grid G.
When three end votage control switch S1 are IGBT pipes, foot position corresponding relation is：1-G、2-C、3-E；When three end votage control switches
When S1 is MOSFET pipes, foot position corresponding relation is：1-G、2-D、3-S；When three end votage control switch S1 are TRIAC pipes, foot position is right
Should be related to for：1-G、2-T2、3-T1.
In Fig. 3 A, four end votage control switch S2 have 1,2,3,4 four ends, and wherein, 2,3 is two switch terminals, and 1,4 is two
Control end, wherein, 4 ends are used for being grounded.The four ends votage control switch S2 is two IGBT pipes differential concatenations or two MOSFET pipes
Differential concatenation or two TRIAC pipe differential concatenations.
Specifically, when four end votage control switch S2 are two IGBT pipe differential concatenations, foot position corresponding relation is：1-G、2-C、
3-C, 4-E, when four end votage control switch S2 are two MOSFET pipe differential concatenations, foot position corresponding relation is：1-G、2-D、3-D、
4-S, when four end votage control switch S2 are two TRIAC pipe differential concatenations, foot position corresponding relation is：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 end 1 is used for controlling
The break-make of votage control switch.
Reference picture 4A, Fig. 4 B, Fig. 5 A and Fig. 5 B, Fig. 4 A, Fig. 4 B, Fig. 5 A and Fig. 5 B describe votage control switch and inductance L2,
Resonance coil L1 and the annexation of resonant capacitance C1.
In Fig. 4 A and Fig. 4 B, C1 represents that resonant capacitance, L1 represent that resonance coil, L2 represent that inductance, S1 represent three side pressure controls
Switch, A, B represent that two outfans, arrow represent magnetic field.One switch terminals of the three ends votage control switch S1 and the inductance
One end connection of L2, another switch terminals of the three ends votage control switch S1 and the inductance L2, the public affairs of the resonance coil L1
End connection altogether；One end that one end of the resonant capacitance C1 is not connected with the inductance L2 with the resonance coil L1 is connected.
The inductance L2 is connected with the resonance coil L1 with after three ends votage control switch S1 parallel connections, obtains the first electricity
Road, first circuit is with the resonant capacitance C1 in parallel or in series.
In Fig. 5 A and Fig. 5 B, C1 represents that resonant capacitance, L1 represent that resonance coil, L2 represent that inductance, S2 represent four side pressure controls
Switch, A, B represent that two outfans, arrow represent magnetic field.One switch terminals of the four ends votage control switch S2 and the inductance
One end connection of L2, another switch terminals of the four ends votage control switch S2 and the inductance L2, the public affairs of the resonance coil L1
End connection altogether；One end that one end of the resonant capacitance C1 is not connected with the inductance L2 with the resonance coil L1 is connected.
The inductance L2 is connected with the resonance coil L1 with after four ends votage control switch S2 parallel connections, obtains the first electricity
Road, first circuit is with the resonant capacitance C1 in parallel or in series.
Three end votage control switch S1 are applied to halfwave rectifier, therefore, one end of the inductance L2 must as " "；Four side pressures
Control switch S2 is applied to all wave rectification, the two ends of the inductance L2 do not connect " ", can select and export from A, B two ends, rectification is filtered
Negative pole after ripple as " ", simultaneously as four end votage control switch S2 input " ".
In the present embodiment, the votage control switch is that IGBT is managed or MOSFET pipes or TRIAC pipes, or the votage control switch is
Two IGBT pipes differential concatenations or two MOSFET pipes differential concatenations or two TRIAC pipe differential concatenations.Selection mode is more, can
To be selected according to different situations.
In this utility model 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 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
During control switch, by the way of input low and high level or the mode of pulse width modulation controls the switch conduction.
It should be noted that when switch is votage control switch, when control end input high level, two switch terminals conductings connect
Energization resistance is zero or close to zero, and inductance is shorted, and original resonant condition is changed, and amplitude changes.When control end is low electricity
At ordinary times, two switch terminal shortcircuits, offresistance are infinitely great, recover original resonant condition, 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
Switch on-off, when votage control switch is turned on, it is zero or close to zero to connect resistance, and inductance is shorted, original resonant condition
It is changed, amplitude changes.When votage control switch is turned off, offresistance is infinitely great, recovers original resonant condition, and amplitude changes.
In the present embodiment, by using by way of manual off switch, the mode of input low and high level or pulse width adjust
The mode of system controls the switch conduction, and inductance is shorted, and the inductance value of circuit changes, and then resonant condition 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 professional and technical personnel in the field to realize or new using this practicality
Type.Multiple modifications of these embodiments will be apparent for those skilled in the art, determined herein
The General Principle of justice can be realized in the case of without departing from spirit or scope of the present utility model in other embodiments.Cause
This, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (8)
1. a kind of amplitude limit control circuit, it is characterised in that include：
Resonance coil, resonant capacitance, switch and inductance；
The inductance is connected with the resonance coil with after the switch in parallel, obtains the first circuit, first circuit and institute
State resonant capacitance in parallel or in series.
2. circuit according to claim 1, it is characterised in that the switch is votage control switch；
Wherein, switch terminals of the votage control switch are connected with one end of the inductance, and another of the votage control switch is opened
The common port connection of inductance, the resonance coil described in Guan Duanyu；One end of the resonant capacitance is not connected with the resonance coil
Connect one end connection of the inductance.
3. circuit according to claim 2, it is characterised in that the votage control switch is IGBT pipes, the collection of the IGBT pipes
Extremely two switch terminals of electrode and transmitting.
4. circuit according to claim 2, it is characterised in that the votage control switch is MOSFET pipes, the MOSFET pipes
Drain electrode and source electrode be two switch terminals.
5. circuit according to claim 2, it is characterised in that the votage control switch is TRIAC pipes, the TRIAC pipes
Main electrode T1 and main electrode T2 are two switch terminals.
6. circuit according to claim 2, it is characterised in that the votage control switch is two IGBT pipe differential concatenations, institute
State extremely two switch terminals of two current collections after two IGBT pipe differential concatenations.
7. circuit according to claim 2, it is characterised in that the votage control switch is two MOSFET pipe differential concatenations,
Two drain electrodes after described two MOSFET pipes differential concatenations are two switch terminals.
8. circuit according to claim 2, it is characterised in that the votage control switch is two TRIAC pipe differential concatenations, institute
It is two switch terminals to state two main electrodes T2 after two TRIAC pipe differential concatenations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620841306.4U CN206023385U (en) | 2016-08-04 | 2016-08-04 | A kind of amplitude limit control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620841306.4U CN206023385U (en) | 2016-08-04 | 2016-08-04 | A kind of amplitude limit control circuit |
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| Publication Number | Publication Date |
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| CN206023385U true CN206023385U (en) | 2017-03-15 |
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| CN201620841306.4U Active CN206023385U (en) | 2016-08-04 | 2016-08-04 | A kind of amplitude limit control circuit |
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| CN (1) | CN206023385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026423B (en) * | 2016-08-04 | 2019-04-09 | 中惠创智无线供电技术有限公司 | A kind of clipping control circuit and method |
-
2016
- 2016-08-04 CN CN201620841306.4U patent/CN206023385U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026423B (en) * | 2016-08-04 | 2019-04-09 | 中惠创智无线供电技术有限公司 | A kind of clipping control circuit and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210324 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. |
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| TR01 | Transfer of patent right |