CN206004421U - A kind of amplitude limit control circuit - Google Patents
A kind of amplitude limit control circuit Download PDFInfo
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- CN206004421U CN206004421U CN201620841332.7U CN201620841332U CN206004421U CN 206004421 U CN206004421 U CN 206004421U CN 201620841332 U CN201620841332 U CN 201620841332U CN 206004421 U CN206004421 U CN 206004421U
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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 transformer；The resonance coil and the resonant capacitance are in parallel or in series；The primary coil of the transformer is in parallel with the resonance coil；The secondary coil of the transformer and the switch in parallel.When needing to provide stable voltage, control the switch conduction, now the secondary coil of the transformer is shorted, the inductance value of the primary coil of the transformer declines, the total inductance amount of whole circuit declines, and then resonant condition is changed, using the teaching of the invention it is possible to provide stable voltage or electric current, driven resonant ring job insecurity is solved the problems, such as.
Description
Technical field
The 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, the utility model provides a kind of amplitude limit control circuit.
For achieving the above object, the utility model provides following technical scheme：
A kind of amplitude limit control circuit, including：
Resonance coil, resonant capacitance, switch and transformer；
The resonance coil and the resonant capacitance are in parallel or in series；The primary coil of the transformer and the resonance
Coils from parallel connection of coils；The secondary coil of the transformer is connected with the switch.
Preferably, the switch is votage control switch；
Wherein, two switch terminals of the votage control switch are connected with the secondary coil of the transformer.
Preferably, the votage control switch is managed for IGBT, and the collector and emitter of the IGBT pipe is two switch terminals.
Preferably, the votage control switch is managed for MOSFET, and the drain electrode of the MOSFET pipe and source electrode are two switch terminals.
Preferably, the votage control switch is managed for TRIAC, and main electrode T1 of the TRIAC pipe and main electrode T2 are opened for two
Guan Duan.
Preferably, the votage control switch is two IGBT pipe differential concatenations, after described two IGBT pipe differential concatenations
Extremely two switch terminals of two current collections.
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 electrodes T2 be two switch terminals.
From technique scheme as can be seen that the utility model provides a kind of amplitude limit control circuit, the circuit includes：
Resonance coil, resonant capacitance, switch and transformer；The resonance coil and the resonant capacitance are in parallel or in series；The change
The primary coil of depressor is in parallel with the resonance coil；The secondary coil of the transformer and the switch in parallel.When needs are carried
During for stable voltage, control the switch conduction, now the secondary coil of the transformer is shorted, at the beginning of the transformer
The inductance value of level coil declines, and the total inductance amount of whole circuit declines, and then resonant condition is changed, using the teaching of the invention it is possible to provide stable electricity
Pressure 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 the 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 a kind of structural representation of resonant ring in the utility model；
Figure 1B is the structural representation of another kind of resonant ring in the utility model；
Fig. 2A is a kind of structural representation of three end votage control switch in the utility model；
Fig. 2 B is the structural representation of another kind of three end votage control switch in the utility model；
Fig. 2 C is the structural representation of the third three ends votage control switch in the utility model；
Fig. 2 D is the structural representation of the 4th kind of three end votage control switch in the utility model；
Fig. 3 A is a kind of structural representation of four end votage control switch in the utility model；
Fig. 3 B is the structural representation of another kind of four end votage control switch in the utility model；
Fig. 3 C is the structural representation of the third four ends votage control switch in the utility model；
Fig. 3 D is the structural representation of the 4th kind of four end votage control switch in the utility model；
Fig. 4 A is a kind of structural representation of the resonant ring of three end votage control switches of application in the utility model；
Fig. 4 B is the structural representation of the resonant ring of three end votage control switches of another kind of application in the utility model；
Fig. 5 A is a kind of structural representation of the resonant ring of four end votage control switches of application in the utility model；
Fig. 5 B is the structural representation of the resonant ring of four end votage control switches of another kind of application in the utility model.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the 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 the utility model protection.
The utility model provides a kind of amplitude limit control circuit, and the circuit includes：
Resonance coil, resonant capacitance, switch and transformer；
The resonance coil and the resonant capacitance are in parallel or in series；The primary coil of the transformer and the resonance
Coils from parallel connection of coils；The secondary coil of the transformer is connected with the switch.
With reference to Figure 1A and Figure 1B, Tu1AZhong, A, B represent two output ends of series resonance ring, and arrow represents magnetic direction,
K represents switch, and C1 represents resonant capacitance, and L1 represents resonance coil, the primary coil of L2 indication transformer, L3 indication transformer
Secondary coil.
In Figure 1B, A, B represent two output ends of parallel resonance ring, and arrow represents magnetic direction, and K represents switch, C1 table
Show resonant capacitance, L1 represents resonance coil, the primary coil of L2 indication transformer, the secondary coil of L3 indication transformer.
When K open circuit is switched, the secondary coil L3 of transformer does not work, at this moment, equivalent to resonance coil L1 and transformation
Device primary coil L2 is in parallel, and the inductance value after parallel connection can be calculated as follows：
1/Lt=1/L1+1/L2
Lt=(L1*L2)/(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 the primary coil of transformer, and
After connection, Lt is less than L1, again smaller than L2.
When K closure is switched, the secondary coil L3 of transformer is shorted, and defines a short-circuited conducting sleeve, the internal resistance of transformer
It is greatly lowered, the inductance value of the primary coil L2 of transformer significantly reduces；Computing formula according to resonant frequency：Now the inductance value of whole circuit is reduced, and the original resonant condition of circuit is destroyed, amplitude respective change,
Output voltage is just different.
In Figure 1A and Figure 1B, the course of work of each element is：
After the secondary coil L3 tandem tap K of transformer, the primary coil L2 of transformer has reformed into a variable coil,
The inductance value of primary coil L2 will be different with cut-offfing for K of switch.When K conducting is switched, the internal resistance for switching K is zero or connects
Zero is bordering on, at this moment, the secondary coil of transformer is shorted, a short-circuited conducting sleeve is formed, the core reluctance of transformer significantly will drop
Low, the impedance of primary coil L2 synchronously reduces, as primary coil L2 is in parallel with resonance coil L1, now total electricity of whole circuit
Sensibility reciprocal declines, and original resonant condition is destroyed, and amplitude changes, and output voltage is with change.
A kind of amplitude limit control circuit is present embodiments provided, the circuit includes：Resonance coil, resonant capacitance, switch and
Transformer；The resonance coil and the resonant capacitance are in parallel or in series；The primary coil of the transformer and the resonance
Coils from parallel connection of coils；The secondary coil of the transformer and the switch in parallel.When needing to provide stable voltage, open described in control
Conducting is closed, now the secondary coil of the transformer is shorted, the inductance value of the primary coil of the transformer declines, whole electricity
The total inductance amount on road declines, and then resonant condition is changed, using the teaching of the invention it is possible to provide stable voltage or electric current, solves driven resonant ring
The problem of job insecurity.
Optionally, in another embodiment of the present utility model, the switch K is votage control switch；
Wherein, two switch terminals of the votage control switch are connected with the secondary coil of the transformer.
Specifically, the votage control switch is managed for IGBT, and the collector and emitter of the IGBT pipe is two switch terminals；Institute
State votage control switch to manage for MOSFET, the drain electrode of the MOSFET pipe and source electrode are two switch terminals；The votage control switch is TRIAC
Pipe, main electrode T1 of the TRIAC pipe and main electrode T2 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 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；Described voltage-controlled
Switch as two TRIAC pipe differential concatenations, two main electrodes T2 after described two TRIAC pipe differential concatenations are two switches
End.
One IGBT pipe, MOSFET pipe or TRIAC pipe are three end votage control switches, two IGBT pipe differential concatenations, two
Individual MOSFET pipe differential concatenation or two TRIAC pipe differential concatenations are four end votage control switches.
Wherein, IGBT pipe (Insulated Gate Bipolar Transistor), insulated gate bipolar transistor, be
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 pipe is 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 the 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 represented is three
End votage control switch, what Fig. 3 A, Fig. 3 B, Fig. 3 C and Fig. 3 D 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 pipe has three poles, respectively colelctor electrode C, emitter E and gate pole G.MOSFET pipe also has three poles, respectively
Drain 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, pin position corresponding relation is：1-G、2-C、3-E；When three end votage control switches
When S1 is MOSFET pipe, pin position corresponding relation is：1-G、2-D、3-S；When three end votage control switch S1 are TRIAC pipe, pin 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 pipe 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, pin 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, pin 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, pin position corresponding relation is：1-G、2-T2、3-T2、4-
T1.
No matter it should be noted that be 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 describes votage control switch and resonance coil
L1, resonant capacitance C1, primary coil L2, the annexation of secondary coil L3.
In Fig. 4 A, A, B represent two output ends of series resonance ring, and arrow represents magnetic direction, and S1 represents three side pressure controls
Switch, C1 represent resonant capacitance, and L1 represents resonance coil, the primary coil of L2 indication transformer, the secondary of L3 indication transformer
Coil.Primary coil L2 is in parallel with resonance coil L1, and secondary coil L3 is connected with two switch terminals of three end votage control switch S1.
In Fig. 4 B, A, B represent two output ends of parallel resonance ring, and arrow represents magnetic direction, and S1 represents three side pressure controls
Switch, C1 represent resonant capacitance, and L1 represents resonance coil, the primary coil of L2 indication transformer, the secondary of L3 indication transformer
Coil.Primary coil L2 is in parallel with resonance coil L1, and secondary coil L3 is connected with two switch terminals of three end votage control switch S1.
In Fig. 5 A, A, B represent two output ends of series resonance ring, and arrow represents magnetic direction, and S2 represents four side pressure controls
Switch, C1 represent resonant capacitance, and L1 represents resonance coil, the primary coil of L2 indication transformer, the secondary of L3 indication transformer
Coil.Primary coil L2 is in parallel with resonance coil L1, and secondary coil L3 is connected with two switch terminals of four end votage control switch S2.
In Fig. 5 B, A, B represent two output ends of parallel resonance ring, and arrow represents magnetic direction, and S2 represents four side pressure controls
Switch, C1 represent resonant capacitance, and L1 represents resonance coil, the primary coil of L2 indication transformer, the secondary of L3 indication transformer
Coil.Primary coil L2 is in parallel with resonance coil L1, and secondary coil L3 is connected with two switch terminals of four end votage control switch S2.
Buffer action due to transformer, it is only necessary to by the side of secondary coil L3 arrange one relative " ", just permissible
It is that three end votage control switch S1 or four end votage control switch S2 provide datum, this datum is unrelated with resonant ring, therefore, no
By being three end votage control switch S1 or four end votage control switch S2, resonant ring allows halfwave rectifier output, also allows full-wave rectification output.
In the present embodiment, the votage control switch is managed for IGBT 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 the utility model when needing to provide stable voltage, control the switch conduction.
Specifically, the control switch conduction, specifically includes：
By the way of the 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 the input low and high level or the mode of pulse width modulation controls the switch conduction.
It should be noted that when the switch conduction is controlled by the way of input low and high level, concrete principle is：
When switching as votage control switch, when control end input high level, two switch terminals conductings, connect resistance and be zero or be close to
In zero, now the secondary coil of the transformer is shorted, and the inductance value of the primary coil of the transformer declines, whole circuit
Total inductance amount decline, original resonant condition is changed, and amplitude changes.When control end is for low level, two switch terminals are short
Road, offresistance are infinitely great, recover original resonant condition, and amplitude changes.
When controlling the switch conduction by the way of pulse width modulation, concrete principle is：
When by the way of the pulse width modulation i.e. in switch terminals input pulse width modulated signal, thus it is possible to vary voltage-controlled open
The break-make of pass, when votage control switch is turned on, it is zero or close to zero to connect resistance, and now the secondary coil of the transformer is short
Road, the inductance value of the primary coil of the transformer decline, and the total inductance amount of whole circuit declines, and original resonant condition is changed
Become, 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 now the secondary coil of the transformer is shorted, the primary coil of the transformer
Inductance value decline, the total inductance amount of whole circuit declines, and then resonant condition is changed, using the teaching of the invention it is possible to provide stable voltage or electricity
Stream, solves 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 to these embodiments will be apparent for those skilled in the art, be 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, the 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 transformer；
The resonance coil and the resonant capacitance are in parallel or in series；The primary coil of the transformer and the resonance coil
In parallel；The secondary coil of the transformer is connected with the switch.
2. circuit according to claim 1, it is characterised in that the switch is votage control switch；
Wherein, two switch terminals of the votage control switch are connected with the secondary coil of the transformer.
3. circuit according to claim 2, it is characterised in that the votage control switch is IGBT pipe, the collection of the IGBT pipe
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 pipe, the MOSFET pipe
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 pipe, the TRIAC pipe
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 pipe 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 |
|---|---|---|---|
| CN201620841332.7U CN206004421U (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 |
|---|---|---|---|
| CN201620841332.7U CN206004421U (en) | 2016-08-04 | 2016-08-04 | A kind of amplitude limit control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN206004421U true CN206004421U (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620841332.7U Active CN206004421U (en) | 2016-08-04 | 2016-08-04 | A kind of amplitude limit control circuit |
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| CN (1) | CN206004421U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253495A (en) * | 2016-08-04 | 2016-12-21 | 中惠创智无线供电技术有限公司 | A kind of amplitude limit control circuit and method |
-
2016
- 2016-08-04 CN CN201620841332.7U patent/CN206004421U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253495A (en) * | 2016-08-04 | 2016-12-21 | 中惠创智无线供电技术有限公司 | A kind of amplitude limit control circuit and method |
| CN106253495B (en) * | 2016-08-04 | 2019-06-21 | 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 |