CN105958665A - Single control series resonant circuit - Google Patents
Single control series resonant circuit Download PDFInfo
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- CN105958665A CN105958665A CN201610381959.3A CN201610381959A CN105958665A CN 105958665 A CN105958665 A CN 105958665A CN 201610381959 A CN201610381959 A CN 201610381959A CN 105958665 A CN105958665 A CN 105958665A
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- resonant capacitance
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- 239000003990 capacitor Substances 0.000 abstract 5
- 230000005611 electricity Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000005352 galvanomagnetic phenomena Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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Abstract
The embodiment of the invention provides a single control series resonant circuit. The single control series resonant circuit includes switch tubes, a resonant transmitting coils and a resonant capacitors, wherein one end of each resonant transmitting coil is connected with one end of each resonant capacitor; the other end of each resonant transmitting coil is connected with the anode of each power supply; the other end of each resonant capacitor is grounded; the first end of each switch tube is connected with one end of each resonant capacitor; and the second end of each switch tube is connected with the other end of each resonant capacitor. The single control series resonant circuit is simple and low in cost, and is high in the EMC (Electro Magnetic Compatibility).
Description
Technical field
The present embodiments relate to circuit engineering field, more particularly relate to a kind of single control series resonant circuit.
Background technology
Wireless power is the energy that the electric energy of power supply is converted into radio transmission by the galvanomagnetic-effect of coil,
At receiving terminal again by this energy conversion telegram in reply energy, thus electrical equipment is carried out wireless power.
Traditional wireless power supply system includes magnetic resonance wireless power supply system.Magnetic resonance wireless power supply system bag
Including wireless power transmitter and receive circuit, wireless power transmitter includes resonance circuit, resonance circuit
Including power supply circuits, resonance ejection coil and electric capacity, the electric energy in power supply circuits is turned by resonance ejection coil
Changing magnetic field energy into, receiving circuit and the magnetic field energy received is converted to electric energy is load supplying.Existing
Resonance circuit in technology is more complicated, and EMC (Electro Magnetic Compatibility, electromagnetism hold concurrently
Capacitive) characteristic is reported to the leadship after accomplishing a task, and the characteristic of resonance circuit directly affects wireless power transmitter and launches magnetic energy
Power and efficiency.
Therefore, simple in the urgent need to a kind of circuit and that EMC characteristic is good resonance circuit.
Summary of the invention
In view of this, the invention provides a kind of single control series resonant circuit and wireless power transmitter,
To overcome single control series resonant circuit in prior art not meet simultaneously, circuit is simple, EMC characteristic is good
Problem.
For achieving the above object, the present invention provides following technical scheme:
A kind of single control series resonant circuit being applied in wireless power, including switching tube, resonance ejection line
Circle and resonant capacitance, wherein,
Described resonance ejection coil one end is connected with one end of described resonant capacitance, described resonance ejection coil
The other end be connected with positive source, the other end ground connection of described resonant capacitance；The first of described switching tube
End is connected with one end of described resonant capacitance, another of the second end of described switching tube and described resonant capacitance
End is connected.
Wherein, described switching tube is MOSFET or IGBT.
Wherein, described resonant capacitance be equivalent tank electric capacity, described inductance be equivalent inductance and/or described in open
Closing pipe is equivalent switch pipe.
Wherein, frequency and described resonance ejection coil and the resonant capacitance of the signal of described switching tube are driven
Resonant frequency is identical.
Understand via above-mentioned technical scheme, compared with prior art, the single control that the embodiment of the present invention provides
Series resonant circuit, is a simple circuit being made up of three elements, and circuit is very simple, cost
Cheap.Resonant capacitance acts on of both having, and resonant capacitance Main Function is and resonance ejection coil forms
Resonant ring, the secondary role of resonant capacitance is, it is connected in parallel on the switch ends of switching tube, absorbs switching tube
The high impulse currents at two ends, prevents from damaging switching tube；Resonance ejection coil also has two kinds of effects, a kind of
Being to form resonant ring with resonant capacitance, another kind is as the resonance ejection coil launching magnetic energy.Work as switch
When the control end of pipe is high level, switching tube turns on, and now resonant capacitance is shorted, due to resonance ejection
The characteristic of coil, determining resonance ejection coil both end voltage can not suddenly change, accordingly, it is capable to be stored in humorous
Shake in transmitting coil；When the control end of switching tube is low level, switching tube ends, resonance ejection coil
In energy release, to resonant capacitance charge, in this process, the major part in resonance ejection coil
Energy is converted to magnetic energy to emission, and small part energy storage is in resonant capacitance, and switching tube constantly repeats
Said process, resonance ejection coil is constantly to emission magnetic energy, and the magnetic energy of resonance ejection coil transmissions is only
A kind of frequency, therefore waveform stabilization, harmonic wave is few, and EMC characteristic is good, and has the spy that output is big
Fixed.
Further, single control series resonant circuit can have only to the control end of switching tube and the defeated of signal source
Going out signal end to be connected, the single supply that i.e. can realize single control series resonant circuit is powered so that single control
Series resonant circuit is easily controlled.
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 reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only embodiments of the invention, for those of ordinary skill in the art, not
On the premise of paying creative work, it is also possible to obtain other accompanying drawing according to the accompanying drawing provided.
Fig. 1 (a) is single switch flyback circuit of the prior art；
Fig. 1 (b) is half-bridge circuit of the prior art；
Fig. 1 (c) is full-bridge circuit of the prior art；
Fig. 2 is the circuit of a kind of implementation of the single control series resonant circuit being applied to wireless power；
Fig. 3 is the circuit diagram of a kind of implementation of single control series resonant circuit；
Fig. 4 is the circuit diagram of the another kind of implementation of single control series resonant circuit.
Detailed description of the invention
For the sake of quoting and understanding, the explanation of the technical term being used below, summary of writing a Chinese character in simplified form or abridge
As follows:
For the sake of quoting and understanding, the explanation of the technical term being used below, summary of writing a Chinese character in simplified form or abridge
As follows:
IGBT:Insulated Gate Bipolar Transistor, insulated gate bipolar transistor；
MOSFET:Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET
Transistor；
EMC:Electro Magnetic Compatibility, Electro Magnetic Compatibility；
PWM:Pulse Width Modulation, pulse width modulation.
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
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
Existing resonance circuit includes single switch flyback circuit, half-bridge circuit and full-bridge circuit, such as Fig. 1 (a)
Shown in, in single switch flyback circuit, the resonant capacitance C and resonance transmitting coil L of resonant ring are in parallel, resonant ring
One end be connected with positive source V+, the other end of resonant ring is connected with the colelctor electrode of switch transistor T 1, switch
The grounded emitter of pipe T1.As shown in Fig. 1 (b), for half-bridge circuit, in half-bridge circuit, resonant ring
In resonant capacitance C and resonance transmitting coil L can be series connection can also be in parallel, half-bridge circuit has two
Brachium pontis, left brachium pontis is in series up and down by two switch transistor T 1 and T2, and right brachium pontis is by two resonance electricity
Holding C3 and C4 to be in series up and down, an end of resonant ring is connected on the midpoint of left brachium pontis, resonant ring another
One end is connected on the midpoint of right brachium pontis；The circuit of left brachium pontis and right brachium pontis can exchange.Such as Fig. 1 (c) institute
Showing, for full-bridge circuit, in full-bridge circuit, resonant ring allows resonant capacitance C and resonance transmitting coil L string
The form of connection or parallel connection occurs, full-bridge circuit has two brachium pontis, and left brachium pontis is by two switch transistor T 1 and T2
Being in series up and down, right brachium pontis is also in series up and down by two switch transistor T 3 and T4, resonant ring
An end be connected on the midpoint of left brachium pontis, the other end of resonant ring is connected on the midpoint of right brachium pontis.
Inventor finds during realizing the invention, although single switch flyback circuit is simple, and cost
Cheap, it is easy to control, but its shortcoming is more prominent, at free harmonic vibration and the single control series resonance electricity of resonant ring
Under the active resonance on road interacts, because frequency multiplication and superposition produce complicated secondary vibration, to the electricity of environment
Guipure carrys out serious pollution, and EMC characteristic is particularly poor.Half-bridge circuit typically requires 2 to 3 tunnel isolation electricity
Source, moderate cost, it is easily controlled, but current waveform easily is affected to produce by leakage current and distorts, shadow
Ringing EMC characteristic, output is less than the output of full-bridge circuit.The circuit of full-bridge circuit is complicated, drives
Dynamic 4 to the 5 road insulating power supplies that need, cost height, wayward, but current waveform and voltage waveform are complete,
EMC characteristic is good, and output is big.
As in figure 2 it is shown, be a kind of implementation of the single control series resonant circuit being applied to wireless power
Circuit diagram, single control series resonant circuit includes resonance ejection coil L, resonant capacitance C and switching tube K,
Wherein:
Described resonance ejection coil L one end is connected with one end of described resonant capacitance C, described resonance ejection
The other end of coil L is connected with positive source V+, the other end ground connection of described resonant capacitance C, described in open
The first end closing pipe is connected with one end of described resonant capacitance, the second end of described switching tube and described resonance
The other end of electric capacity is connected.
Embodiment of the present invention breaker in middle pipe can be NMOSFET, and now the first end can be drain electrode, phase
The second end answered is source electrode, and control end is grid；Switching tube can be PMOSFET, and now the first end is
Source electrode, the second end is drain electrode, and control end is grid；Switching tube can be IGBT, and now the first end is collection
Electrode, corresponding second end is emitter stage, and control end is grid.
The frequency driving the signal of switching tube K is consistent with the intrinsic free-running frequency of resonant ring, i.e. drives
The frequency of the signal of described switching tube is identical with the resonant frequency of resonant capacitance with described resonance ejection coil.
In above-mentioned single control series resonant circuit embodiment single control series resonant circuit to realize principle as follows: when
When the control end of switching tube K has high level, switching tube K turns on, and resonant capacitance C is shorted, the most humorous
One end ground connection that first end of transmitting coil L and switching tube K that shakes is connected, power supply V+ passes through resonance coil L
Form electric current over the ground, due to the characteristic of resonance ejection coil, determine the two ends electricity of resonance ejection coil L
Pressure can not be suddenlyd change, accordingly, it is capable to be stored in resonance ejection coil L；When the control end of switching tube K is
During low level, switching tube K ends, the energy release in resonance ejection coil L, fills to resonant capacitance C
Electricity, in this process, the most of energy in resonance ejection coil L is converted into magnetic energy to emission,
Small part energy storage is in resonant capacitance C；Switching tube K constantly repeats said process, resonance ejection line
Circle L is the most constantly to emission magnetic energy, and the electrical equipment for wireless power i.e. loads the offer energy.
In above-mentioned single control series resonant circuit embodiment, resonant capacitance is connected in parallel on the switch ends of switching tube,
This resonant capacitance i.e. achieves the function absorbing resonant capacitance, i.e. absorbs the high arteries and veins of the switch ends of switching tube
Rush electric current, prevent from damaging switching tube, be again a part for resonant ring in single control series resonant circuit.
Resonant capacitance is a part for resonant ring, has strict parameter to mate with resonance ejection coil.
The embodiment of the present invention provide single control series resonant circuit, be one by three elements form simple
Circuit, but it has a following key property: circuit is very simple, with low cost, and waveform stabilization is humorous
Ripple is few, and EMC characteristic is good, and output is big, and single supply is powered, and the advantage such as is easily controlled.
In one coil, if the adjacent coiling of each circle is all close to, referred to as tight type coil；If
Space is had then to be referred to as loose type coil between the coiling that each circle is adjacent.
With two with individual (containing two) resonance ejection coils connected in series, parallel connection, series-parallel connection, form an equivalence
Coil, can substitute the resonance ejection coil in the embodiment of the present invention.
With two with individual (containing two) resonant capacitance series, parallel, series-parallel connection, form an equivalent tank
Electric capacity, can substitute the resonant capacitance C in the embodiment of the present invention.
With two with individual (containing two) paralleled power switches, control electric current to strengthen, form an equivalence and open
Guan Guan, can substitute the switching tube in the embodiment of the present invention.
It is illustrated in figure 3 the circuit diagram of a kind of implementation of single control series resonant circuit.Single control series resonance
Circuit includes switch mosfet pipe T1, resonant capacitance C and resonance ejection coil L, wherein:
Described resonance ejection coil L one end is connected with one end of described resonant capacitance C, described resonance ejection
The other end of coil L is connected with positive source V+, the other end ground connection of described resonant capacitance C, described
The end that controls of switch mosfet pipe T1 is connected with the signal output part of signal source SG；Described MOSFET
First end of switch transistor T 1 is connected with one end of described resonant capacitance C, described switch mosfet pipe T1
The second end be connected with the other end of described resonant capacitance C.
As shown in Figure 4, for the circuit diagram of another kind of implementation of single control series resonant circuit.Single control is connected
Resonance circuit includes IGBT switching tube F1, resonant capacitance C and resonance ejection coil L, wherein:
Described resonance ejection coil L one end is connected with one end of described resonant capacitance C, described resonance ejection
The other end of coil L is connected with positive source V+, the other end ground connection of described resonant capacitance C, described
The end that controls of IGBT switching tube F1 is connected with the signal output part of signal source SG；Described IGBT switching tube
First end of F1 is connected with one end of described resonant capacitance C, second end of described IGBT switching tube F1 with
The other end of described resonant capacitance C is connected.
Signal source SG output signal can be square-wave pulse signal can also be pwm signal, this signal
Dutycycle can be less than 50%, but this is not specifically limited by the embodiment of the present invention.
In above-mentioned single control series resonant circuit embodiment single control series resonant circuit to realize principle as follows: when
The control end of IGBT switching tube F1 or switch mosfet pipe T1 has an i.e. high level of square wave high impulse
Time, IGBT switching tube F1 or switch mosfet pipe T1 conducting, resonant capacitance C is shorted, now
First end of resonance ejection coil L and IGBT switching tube F1 or switch mosfet pipe T1 be connected one
End ground connection, power supply V+ forms electric current over the ground by resonance coil L, due to the characteristic of resonance ejection coil,
The both end voltage determining resonance ejection coil L can not be suddenlyd change, accordingly, it is capable to be stored in resonance ejection line
In circle L；When the control end of IGBT switching tube F1 or switch mosfet pipe T1 is low level, IGBT
Switching tube F1 or switch mosfet pipe T1 cut-off, the energy release in resonance ejection coil L, to humorous
The electric capacity C that shakes charges, and in this process, the most of energy in resonance ejection coil L is converted into magnetic energy
To emission, in small part energy storage to resonant capacitance C；IGBT switching tube F1 or MOSFET opens
Closing pipe T1 and constantly repeat said process, resonance ejection coil L is the most constantly to emission magnetic energy, for wireless confession
The electrical equipment of electricity i.e. loads the offer energy.
Dotted arrow in above-mentioned accompanying drawing represents the transmission direction of the energy that resonance ejection coil produces.
The embodiment of the present invention additionally provides a kind of wireless power transmitter, including signal source and any of the above-described
Described single control series resonant circuit, the signal output part of described signal source and described single control series resonant circuit
Switching tube control end be connected.
It should be noted that each embodiment in this specification all uses the mode gone forward one by one to describe, each
What embodiment stressed is all the difference with other embodiments, identical similar between each embodiment
Part see mutually.
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 aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (4)
1. a single control series resonant circuit, is applied to wireless power, it is characterised in that include switching tube,
Resonance ejection coil and resonant capacitance, wherein,
Described resonance ejection coil one end is connected with one end of described resonant capacitance, described resonance ejection coil
The other end be connected with positive source, the other end ground connection of described resonant capacitance；The first of described switching tube
End is connected with one end of described resonant capacitance, another of the second end of described switching tube and described resonant capacitance
End is connected.
Single control series resonant circuit the most according to claim 1, it is characterised in that described switching tube is
MOSFET or IGBT.
Single control series resonant circuit the most according to claim 1, it is characterised in that described resonant capacitance
It is equivalent inductance for equivalent tank electric capacity, described inductance and/or described switching tube is equivalent switch pipe.
Single control series resonant circuit the most according to claim 1, it is characterised in that drive described switch
The frequency of the signal of pipe is identical with the resonant frequency of resonant capacitance with described resonance ejection coil.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610381959.3A CN105958665A (en) | 2016-06-01 | 2016-06-01 | Single control series resonant circuit |
| US16/302,622 US10848004B2 (en) | 2016-06-01 | 2016-10-18 | Resonance circuit, wireless power supply transmitter, switch circuit and full-bridge transmitting circuit |
| PCT/CN2016/102444 WO2017206420A1 (en) | 2016-06-01 | 2016-10-18 | Resonance circuit, wireless power supply transmitter, switch circuit and full-bridge transmitting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610381959.3A CN105958665A (en) | 2016-06-01 | 2016-06-01 | Single control series resonant circuit |
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| Publication Number | Publication Date |
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| CN105958665A true CN105958665A (en) | 2016-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610381959.3A Pending CN105958665A (en) | 2016-06-01 | 2016-06-01 | Single control series resonant circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017206420A1 (en) * | 2016-06-01 | 2017-12-07 | 中惠创智无线供电技术有限公司 | Resonance circuit, wireless power supply transmitter, switch circuit and full-bridge transmitting circuit |
| WO2018023882A1 (en) * | 2016-08-04 | 2018-02-08 | 中惠创智无线供电技术有限公司 | Amplitude limit control circuit, device and method |
| CN108808886A (en) * | 2018-01-10 | 2018-11-13 | 深圳市思坎普科技有限公司 | Transmitting equipment, wireless power supply system and the wireless lighting systems of wireless power supply system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102017363A (en) * | 2008-05-02 | 2011-04-13 | 奥林巴斯株式会社 | Wireless power supply system |
| CN102113195A (en) * | 2008-07-28 | 2011-06-29 | 高通股份有限公司 | Wireless power transmission for electronic devices containing parasitic resonant tank |
| US20130154384A1 (en) * | 2011-12-15 | 2013-06-20 | Koji Nakamura | Contactless power receiving device, vehicle, contactless power transmitting device, and contactless power supply system |
| CN205681189U (en) * | 2016-06-01 | 2016-11-09 | 中惠创智无线供电技术有限公司 | Single control series resonant circuit |
-
2016
- 2016-06-01 CN CN201610381959.3A patent/CN105958665A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102017363A (en) * | 2008-05-02 | 2011-04-13 | 奥林巴斯株式会社 | Wireless power supply system |
| CN102113195A (en) * | 2008-07-28 | 2011-06-29 | 高通股份有限公司 | Wireless power transmission for electronic devices containing parasitic resonant tank |
| US20130154384A1 (en) * | 2011-12-15 | 2013-06-20 | Koji Nakamura | Contactless power receiving device, vehicle, contactless power transmitting device, and contactless power supply system |
| CN205681189U (en) * | 2016-06-01 | 2016-11-09 | 中惠创智无线供电技术有限公司 | Single control series resonant circuit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017206420A1 (en) * | 2016-06-01 | 2017-12-07 | 中惠创智无线供电技术有限公司 | Resonance circuit, wireless power supply transmitter, switch circuit and full-bridge transmitting circuit |
| US10848004B2 (en) | 2016-06-01 | 2020-11-24 | Zonecharge (Shenzhen) Wireless Power Technology Co, Ltd. | Resonance circuit, wireless power supply transmitter, switch circuit and full-bridge transmitting circuit |
| WO2018023882A1 (en) * | 2016-08-04 | 2018-02-08 | 中惠创智无线供电技术有限公司 | Amplitude limit control circuit, device and method |
| CN108808886A (en) * | 2018-01-10 | 2018-11-13 | 深圳市思坎普科技有限公司 | Transmitting equipment, wireless power supply system and the wireless lighting systems of wireless power supply system |
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Application publication date: 20160921 |