CN106059113A - Resonance receiving circuit with wireless power supply - Google Patents
Resonance receiving circuit with wireless power supply Download PDFInfo
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- CN106059113A CN106059113A CN201610634347.0A CN201610634347A CN106059113A CN 106059113 A CN106059113 A CN 106059113A CN 201610634347 A CN201610634347 A CN 201610634347A CN 106059113 A CN106059113 A CN 106059113A
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- 230000005611 electricity Effects 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 abstract description 8
- 238000007600 charging Methods 0.000 description 24
- 238000005516 engineering process Methods 0.000 description 6
- 230000010355 oscillation Effects 0.000 description 4
- 206010037660 Pyrexia Diseases 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- H02J7/025—
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a resonance receiving circuit with wireless power supply. The circuit comprises a switch tube and a first resonant capacitor, the first resonant capacitor and the switch tube are connected in series and then connected with a receiving coil of the resonance receiving circuit in parallel, a driving power supply inputs a PWM voltage to the switch tube to control ON/OFF time of the switch tube, and resonance reception is controlled effectively. In addition, the switch tube is used to control resonance reception, so that the structure of a control circuit is simpler.
Description
Technical field
The present invention relates to wireless charging field, the resonance particularly relating to a kind of wireless power receives circuit.
Background technology
Along with the development of science and technology, wireless charging technology is the most ripe, and starts to obtain in our daily life
To universal.Wireless charging technology comes from wireless power transmission technology, generally uses the mode of magnetic resonance to carry out energy transmission, by supplying
Electricity equipment transmits its energy to power device.As the receptor of wireless power, receiving resonant ring is crucial assembly.Receive resonance
Ring is generally become a LC resonant ring by resonance coil with resonance capacitance group.Therefore to control this resonant ring, or change resonance
Electric capacity, or change receiving coil.Just with setting after a usual coil winding, it is difficult to change after entering electrical equipment.So can only
The quantity of resonant capacitance is increased or decreased to change resonance output voltage.
Owing to LC resonant ring works under exchange status, the break-make of an electric capacity to be controlled, generally use two-way switch, as
Bi-directional MOS GET manages, two-way IGBT pipe etc..But these two-way switch are required for independent driving power supply could work, control circuit
Numerous and diverse, relatively costly, meanwhile, these switches are all differential concatenations, and thermal losses is also multiplied.
The most how building a kind of resonant control circuit simple, effective is to be presently required to solve the technical problem that.
Summary of the invention
In view of this, the resonance that the invention discloses a kind of wireless power receives circuit, uses a switch controlled humorous
The break-make of electric capacity of shaking realizes the effective control receiving resonance, and control circuit simple in construction.
The resonance that the invention discloses a kind of wireless power receives circuit, including:
Switching tube and the first resonant capacitance；
Wherein, the first port of described first resonant capacitance is connected with the drain electrode of switching tube；Described first resonant capacitance
Second port is connected with the first port of the receiving coil that described resonance receives circuit；The source electrode of described switching tube and described reception
Second port of coil connects；
The grid of described switching tube is connected with driving power supply, in order to input PWM voltage for described switching tube, opens described in control
Close the break-make of pipe.
Preferably, described first resonant capacitance is an electric capacity or an equivalent capacity.
Preferably, described circuit, also include:
Second resonant capacitance；
First port of described second resonant capacitance is connected with the second port of described first resonant capacitance, described second humorous
The second port of electric capacity of shaking is connected with the source electrode of switching tube.
Preferably, described second resonant capacitance is an electric capacity or an equivalent capacity.
Preferably, described equivalent capacity, including:
Two or more electric capacity；Wherein, said two or plural capacitances in series or parallel connection.
Preferably, described switching tube is MOSFET pipe.
Preferably, described switching tube is IGET pipe.
Relative to prior art, the invention has the beneficial effects as follows: reception resonance circuit disclosed by the invention includes switching tube
With the first resonant capacitance, described first resonant capacitance connect with switching tube after again with the receiving coil of described reception resonance circuit also
Connection, and by driving power supply to input PWM voltage to switching tube, control the make-and-break time of described switching tube, thus realize humorous
The effective of reception that shake controls；It addition, use a switching tube to realize the control that resonance is received so that control circuit structure is more
Add simple.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
The accompanying drawing provided obtains other accompanying drawing.
Fig. 1 is the structure chart of the resonance reception circuit of a kind of wireless charging disclosed in the embodiment of the present invention；
Fig. 2 is the structure chart of the resonance reception circuit of a kind of wireless charging disclosed in another embodiment of the present invention；
Fig. 3 is the structure chart of the resonance reception circuit of a kind of wireless charging disclosed in another embodiment of the present invention；
Fig. 4 is the structure chart of the resonance reception circuit of a kind of wireless charging disclosed in another embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
The resonance that the invention discloses a kind of wireless power receives circuit 101, sees Fig. 1, including:
Switching tube 102 and the first resonant capacitance 103；
Wherein, described first port of the first resonant capacitance 103 is connected with the drain electrode of switching tube 102；Described first resonance
Second port of electric capacity 103 is connected with the first port of the resonance receiving coil 104 that described resonance receives circuit；Described switching tube
The source electrode of 102 is connected with the second port of described receiving coil 104；
The grid of described switching tube 102 is connected with driving power supply, in order to input PWM voltage for described switching tube, controls institute
State the break-make of switching tube 102.
It should be noted that switching tube 102 is single-way switch, only allow electric current one-way flow.Switching tube 102 can be
MOSFET pipe or IGET pipe, and IGET pipe internal resistance is more much larger than MOSFET pipe, fever phenomenon is serious, it is adaptable to high voltage, electricity
Flow relatively small place.In the present embodiment, main introduction realizes the control to resonance reception circuit 101 by MOSFET pipe.
MOSFET pipe is a voltage-controlled device, including source S, drain D and three ports of grid G, the source S of MOSFET pipe and drain D
Between have a reverse fly-wheel diode, the DS knot of MOSFET pipe is an electrical switch simultaneously.By changing MOSFET pipe
The level of grid G can realize the break-make of DS knot, as long as applying a PWM voltage in the grid G of MOSFET pipe, it is possible to change
Become the make-and-break time of MOSFET pipe, control the resonance degree of resonant tank LC with the time, thus achieve a butt joint and receive the control of energy.
It addition, as the receptor of wireless charging, receive resonant ring and be made up of two kinds of elements of receiving coil and resonant capacitance
One reception LC resonant ring.Wherein pressure, the loss of resonant capacitance, volume, the resonance of resonance receiving coil and resonant capacitance
Degree etc., all by directly affecting the various parameters of resonance reception circuit, such as voltage, electric current, ripple, heat stability etc..Control this
Individual reception resonant ring has two kinds of approach: one is to change resonant capacitance, and another kind is to change receiving coil.Generally, a coil
The most shape after coiling, be just difficult to change, so resonant capacitance can only be changed after entering wireless charging device.By adjusting resonance
The capacity of electric capacity changes the resonance degree in LC loop, thus changes resonance output voltage, and common way is to increase or reduces humorous
Shake the quantity of electric capacity.
Preferably, in another embodiment, receive with resonance again after connecting with MOSFET pipe 105 with the first resonant capacitance 103
Coil 104 is in parallel, sees Fig. 2, forms the reception resonant ring that a half-wave controls.
The grid G of MOSFET pipe 105 is by driving power supply offer PWM voltage.Wherein, the dutycycle of PWM voltage signal is 0-
100%, as PWM=0, MOSFET pipe 105 complete switches off, and the first resonant capacitance 103 is equivalent to open circuit, receives resonant tank and stops
Shake, do not obtain energy；As PWM=100%, MOSFET pipe 105 is fully on, due to MOSFET pipe 105 internal resistance close to
0, the first resonant capacitance 103 is equivalent to an independent resonant capacitance, receives the complete resonance of resonant tank, obtains ceiling capacity.
Pwm pulse voltage is provided, when the grid G of MOSFET pipe 105 is low level, namely PWM voltage by driving power supply
During for low level, MOSFET pipe 105 ends, and the fly-wheel diode within MOSFET pipe 105 can only be single to the first resonant capacitance 103
To charging, but can not discharge it, it is thus impossible to form resonance, resonance receives circuit 101 failure of oscillation, without electricity on filter capacitor 109
Pressure, therefore interrupts the charging to wireless charging device；When the grid G of MOSFET pipe 105 is high level, and namely PWM voltage is
During high level, MOSFET pipe 105 turns on, and the fly-wheel diode within MOSFET pipe 105 is shorted, the first resonant capacitance 103 pairs
To conducting, therefore, resonance receive loop normally work, receive resonant ring electric current after diode 108 rectification, filter capacitor
Can be obtained by ceiling voltage on 109, thus be charged for wireless charging device.
It should be noted that the first resonant capacitance 103 can be an electric capacity, it is also possible to be two or above electric capacity
One equivalent capacity of serial or parallel connection composition.Receive it addition, resonance disclosed in this example receives circuit 101 simply wireless charging
A kind of structure of circuit, the reception resonant ring that the half-wave in the present embodiment controls is applicable to the resonance of all wireless chargings and receives electricity
Lu Zhong.
Reception resonance circuit 101 in the present embodiment includes MOSFET pipe 105 and the first resonant capacitance 103, described first
Resonant capacitance 103 is in parallel with the receiving coil 104 of described reception resonance circuit again after connecting with MOSFET pipe 105, and by driving
Galvanic electricity source inputs PWM voltage to MOSFET pipe 105, controls the make-and-break time of described MOSFET pipe 105, thus realizes resonance
The effective control received.It addition, use a MOSFET pipe 105 to realize the control that resonance is received so that control circuit is tied
Structure is simpler, low cost.
Preferably, in another embodiment, the resonance disclosing a kind of wireless power receives circuit 106, sees Fig. 3, bag
Include:
MOSFET pipe the 105, first resonant capacitance 103 and the second resonant capacitance 107；
Wherein, described first port of the first resonant capacitance 103 is connected with the drain electrode of MOSFET pipe 105；Described first humorous
The second port of electric capacity 103 that shakes is connected with the first port of the receiving coil 104 of described resonance reception circuit 106；Described
The source electrode of MOSFET pipe 105 is connected with the second port of described receiving coil 104；First end of described second resonant capacitance 107
Mouth is connected with the second port of described first resonant capacitance 103, and the second port of described second resonant capacitance 107 is managed with MOSFET
The source electrode of 105 connects, it is achieved MOSFET pipe 105 connect with the first resonant capacitance 103 after again with the second resonant capacitance 107 and reception
The resonant ring of coil 104 composition is in parallel.Preferably, described second resonant capacitance 107 be an electric capacity or two and two with
The equivalent capacity of upper electric capacity serial or parallel connection composition, forms a half-wave control circuit.
When MOSFET pipe 105 grid G is low level, MOSFET pipe 105 ends, the afterflow two within MOSFET pipe 105
It can only but can not be discharged by pole pipe by the first unidirectional charging of resonant capacitance 103, and therefore, the first resonant capacitance 103 is invalid, no
Affect resonance receiving coil 104 and the original resonant operational state of the second resonant capacitance 107；Receive the electric current of resonant ring through two poles
After pipe 108 rectification, filter capacitor 109 can be obtained by ceiling voltage, now, wireless charging device can be charged.
When the grid G of MOSFET pipe 105 is high level, MOSFET pipe 105 turns on, the afterflow within MOSFET pipe 105
Diode is shorted, the first resonant capacitance 103 two-way admittance, is equivalent to the first resonant capacitance 103 straight with the second resonant capacitance 107
Connecing parallel connection, therefore, resonance receiving coil 104 and the original resonant operational state of the second resonant capacitance 107 are destroyed, resonant frequency
Changing, resonance produces bigger skew even failure of oscillation, and filter capacitor 109 can be obtained by relatively low voltage, even no-voltage,
Now wireless charging device can not charge.
When the pwm signal of MOSFET pipe 105 grid G changes from 0 to 100%, the width of PWM voltage pressed by MOSFET pipe 105
Degree conducting, the first resonant capacitance 103 is effective, resonance frequency shift, and PWM value is the biggest, and frequency shift (FS) is the biggest, and resonance amplitude is the least,
Even failure of oscillation, therefore, the value changing PWM just can make resonance change by the slope of PWM.
It should be noted that resonance disclosed in this example receives circuit 106 simply wireless charging receives a kind of knot of circuit
Structure, the half-wave control circuit in the present embodiment receives circuit be applicable to all wireless charging resonance.
In the present embodiment, control the second resonant capacitance 107 by the break-make controlling MOSFET pipe 105 and receive line with resonance
The resonance degree of the resonant ring of circle 104 composition.Thus realize resonance is received effective control of circuit 106, control circuit materials
Less, simple in construction, low cost.
Preferably, in another embodiment, the resonance disclosing a kind of wireless power receives circuit 110, sees Fig. 4, bag
Include:
IGET pipe 111 and the first resonant capacitance 103；
Wherein, described IGET pipe 111 includes drain D, source S and grid G.The drain D of described IGET pipe 111 and described the
First port of one resonant capacitance 103 is connected, and the source S of IGET pipe 111 receives the second of the receiving coil 104 of circuit with resonance
Port connects；Described second port of the first resonant capacitance 103 is connected with the first port of receiving coil 104, it is achieved IGET manages
111 connect with the first resonant capacitance 103 after in parallel with receiving coil 104 again, form the reception resonant ring that half-wave controls.
When the grid G of IGET pipe 111 is low level, IGET pipe 111 ends, and the first resonant capacitance 103 is invalid, it is impossible to shape
Becoming resonance, resonance receives circuit failure of oscillation, and no-voltage at filter capacitor 109, now wireless charging device can not charge；When IGET manages
When the grid G of 111 is high level, IGET pipe 111 turns on, IGET pipe 111, the first resonant capacitance 103 two-way admittance, therefore, humorous
Shake reception loop normally work, receive resonant ring electric current after diode 108 rectification, filter capacitor 109 can be obtained by
Ceiling voltage.Now wireless charging device just can be charged.
It should be noted that resonance disclosed in this example receives circuit 110 simply wireless charging receives a kind of knot of circuit
Structure, the reception resonant ring that the half-wave of the present embodiment controls receives circuit be applicable to all wireless charging resonance.
In this enforcement, it is IGET pipe 111 that resonance receives the breaker in middle pipe 102 of circuit 110, due to IGET pipe 111 internal resistance ratio
Relatively big, fever phenomenon is serious, is only applicable to the place that high voltage, electric current are relatively small.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (7)
1. the resonance of a wireless power receives circuit, it is characterised in that including:
Switching tube and the first resonant capacitance；
Wherein, the first port of described first resonant capacitance is connected with the drain electrode of switching tube；The second of described first resonant capacitance
Port is connected with the first port of the receiving coil that described resonance receives circuit；The source electrode of described switching tube and described receiving coil
Second port connect；
The grid of described switching tube is connected with driving power supply, in order to inputs PWM voltage for described switching tube, controls described switching tube
Break-make.
Circuit the most according to claim 1, it is characterised in that described first resonant capacitance is an electric capacity or an equivalence
Electric capacity.
Circuit the most according to claim 1, it is characterised in that also include:
Second resonant capacitance；
First port of described second resonant capacitance is connected with the second port of described first resonant capacitance, described second resonance electricity
The second port held is connected with the source electrode of switching tube.
Circuit the most according to claim 3, it is characterised in that described second resonant capacitance is an electric capacity or an equivalence
Electric capacity.
5. according to the circuit described in claim 2 or 4 any one, it is characterised in that described equivalent capacity, including:
Two or more electric capacity；Wherein, said two or plural capacitances in series or parallel connection.
Circuit the most according to claim 1, it is characterised in that
Described switching tube is MOSFET pipe.
Circuit the most according to claim 1, it is characterised in that
Described switching tube is IGET pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610634347.0A CN106059113A (en) | 2016-08-04 | 2016-08-04 | Resonance receiving circuit with wireless power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610634347.0A CN106059113A (en) | 2016-08-04 | 2016-08-04 | Resonance receiving circuit with wireless power supply |
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| CN106059113A true CN106059113A (en) | 2016-10-26 |
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| CN201610634347.0A Pending CN106059113A (en) | 2016-08-04 | 2016-08-04 | Resonance receiving circuit with wireless power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108242857A (en) * | 2016-12-27 | 2018-07-03 | 中惠创智无线供电技术有限公司 | A kind of resonant wireless power supply system and its power regulating method and system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110098056A1 (en) * | 2009-10-28 | 2011-04-28 | Rhoads Geoffrey B | Intuitive computing methods and systems |
| CN102508950A (en) * | 2011-10-14 | 2012-06-20 | 广东电网公司电力科学研究院 | Regional dispatching automatic system and method for communication between regional dispatching automatic system and remote monitoring diagnosis centre |
| CN202524175U (en) * | 2012-04-24 | 2012-11-07 | 朱斯忠 | Three-dimensional wireless power supply |
-
2016
- 2016-08-04 CN CN201610634347.0A patent/CN106059113A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110098056A1 (en) * | 2009-10-28 | 2011-04-28 | Rhoads Geoffrey B | Intuitive computing methods and systems |
| CN102508950A (en) * | 2011-10-14 | 2012-06-20 | 广东电网公司电力科学研究院 | Regional dispatching automatic system and method for communication between regional dispatching automatic system and remote monitoring diagnosis centre |
| CN202524175U (en) * | 2012-04-24 | 2012-11-07 | 朱斯忠 | Three-dimensional wireless power supply |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108242857A (en) * | 2016-12-27 | 2018-07-03 | 中惠创智无线供电技术有限公司 | A kind of resonant wireless power supply system and its power regulating method and system |
| CN108242857B (en) * | 2016-12-27 | 2021-05-14 | 中惠创智（深圳）无线供电技术有限公司 | Resonant wireless power supply system and power adjusting method and system thereof |
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Application publication date: 20161026 |
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