CN206004420U - On-off circuit and control series resonant circuit more - Google Patents
On-off circuit and control series resonant circuit more Download PDFInfo
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- CN206004420U CN206004420U CN201620836693.2U CN201620836693U CN206004420U CN 206004420 U CN206004420 U CN 206004420U CN 201620836693 U CN201620836693 U CN 201620836693U CN 206004420 U CN206004420 U CN 206004420U
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Abstract
The embodiment of the present application provides a kind of on-off circuit and controls series resonant circuit more, this on-off circuit includes the switching tube of N number of parallel connection, in the same time, in N number of described switching tube, only one of which switching tube is in the conduction state, once, LC series resonance ring just produces a resonance, and N number of switching tube turn-on frequency sum is the resonant frequency of LC series resonance ring for each switching tube conducting and disconnection, turned in turn by N number of switching tube and disconnect, to control LC series resonance ring high-frequency emission magnetic field energy.For each switching tube, conducting and the frequency disconnecting are not very high, thus not allowing to produce heat, also will not damage easily, improve stability, because N number of switching tube can be less expensive switching tube on market, the cost of therefore increase less it might even be possible to ignore.
Description
Technical field
The application is related to circuit engineering, more particularly relates to a kind of on-off circuit and controls series resonant circuit more.
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, in receiving terminal
Again by this energy conversion telegram in reply energy, thus wireless power is carried out to electrical equipment.
Wireless power supply system includes wireless power transmitter and receiving circuit, and it is humorous that wireless power transmitter includes LC series connection
Shake ring, and LC series resonance ring includes power supply circuits, resonance ejection coil and resonant capacitance, and resonance ejection coil is by power supply circuits
Electric energy be converted into magnetic field energy, receiving circuit by the magnetic field energy receiving be converted to electric energy be load supplying.In order to
Magnetic field energy is launched farther distance, needs to improve the frequency that wireless power supply system launches magnetic field energy, be now accomplished by adopting
Control the frequency of resonance ejection coil transmissions magnetic field energy with expensive high frequency switching device.
Because the frequency of high frequency switching device conducting and disconnection is very high, lead to high-frequency element heating serious, be easily damaged, from
And reduce the stability of wireless power supply system, and high-frequency element is expensive, leads to the cost of wireless power supply system to increase
Plus.
Utility model content
In view of this, this utility model provides a kind of on-off circuit and controls series resonant circuit more, existing to overcome
Because the frequency of high frequency switching device conducting and disconnection is very high in technology, lead to high-frequency element heating serious, be easily damaged, thus
Reduce the stability of wireless power supply system, and high-frequency element is expensive, lead to the cost of wireless power supply system to greatly increase
Problem.
For achieving the above object, this utility model provides following technical scheme：
A kind of on-off circuit, is applied to LC series resonance ring, and it is harmonious that described LC series resonance ring includes resonance ejection coil
Shake electric capacity, and one end of described resonance ejection coil is connected with one end of described resonant capacitance, described resonance ejection coil another
End is connected with positive source, the other end ground connection of described resonant capacitance, and described on-off circuit includes：
N number of switching tube in parallel, the first end of N number of described switching tube is all connected with one end of described resonant capacitance, N number of institute
The second end stating switching tube is all connected with the other end of described resonant capacitance, and N is the positive integer more than or equal to 2；
Wherein, in the same time, in N number of described switching tube, only one of which switching tube is in the conduction state, N number of described switch
The turn-on frequency sum of pipe is the resonant frequency of described LC series resonance ring, and described turn-on frequency is on for described switching tube
The frequency of state.
Wherein, described on-off circuit also includes：
Signal source, described signal source includes N number of signal output part, and described signal source generates N road control signal, each road institute
State control signal and correspond to a signal output part；
N number of signal output part of described signal source is corresponded with the control end of N number of described switching tube respectively and is connected；
In the control signal of described signal source output N road, at least N number of output high level moment is with described LC series resonance ring
Harmonic period be tolerance arithmetic progression, the amplitude of the described high level in each described control signal is more than or equal to described
The conducting voltage of the switching tube that control signal drives.
Preferably, described signal source also includes：N number of driving amplifier, each road control signal that described signal source produces
Export via driving amplifier described in, the outfan of N number of described driving amplifier is N number of signal output of described signal source
End.
Wherein, described switching tube is Metal-Oxide Semiconductor field effect transistor M OSFET or insulated gate bipolar transistor
Pipe IGBT.
Wherein, described resonant capacitance be equivalent tank electric capacity, described resonance ejection coil be equivalent tank transmitting coil and/
Or described switching tube is equivalent switch pipe.
A kind of many control series resonant circuits, including any of the above-described described on-off circuit and LC series resonance ring, described LC
Series resonance ring includes resonance ejection coil and resonant capacitance, one end of described resonance ejection coil and the one of described resonant capacitance
End is connected, and the other end of described resonance ejection coil is connected with positive source, the other end ground connection of described resonant capacitance.
Understand via above-mentioned technical scheme, compared with prior art, this utility model embodiment provides a kind of switch
Circuit, this on-off circuit includes the switching tube of N number of parallel connection, in the same time, at only one of which switching tube in N number of described switching tube
In conducting state, once, LC series resonance ring just produces a resonance, N number of switching tube conducting for each switching tube conducting and disconnection
Frequency sum is the resonant frequency of LC series resonance ring, is turned in turn by N number of switching tube and disconnects, and to control LC series connection humorous
Shake ring high-frequency emission magnetic field energy.For each switching tube, conducting and the frequency disconnecting are not very high, thus not allowing to produce
Heat amount, also will not damage easily, improve stability, because N number of switching tube can be less expensive switching tube on market,
The cost of therefore increase less it might even be possible to ignore.
Brief description
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 in description of the prior art the accompanying drawing of required use be briefly described 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 providing.
A kind of circuit diagram of many controls series resonant circuit of inclusion on-off circuit that Fig. 1 provides for the embodiment of the present application；
The oscillogram of the N road control signal of signal source SG output in the on-off circuit that Fig. 2 provides for the embodiment of the present application；
A kind of oscillogram of the N road control signal of signal source SG output that Fig. 3 provides for the embodiment of the present application；
The oscillogram of the N road control signal of another signal source SG output that Fig. 4 provides for the embodiment of the present application；
The electricity of the another implementation of many controls series resonant circuit of the inclusion on-off circuit that Fig. 5 provides for the embodiment of the present application
Lu Tu.
Specific embodiment
For the sake of quoting and understanding, hereafter used in technical term explanation, write a Chinese character in simplified form or abridge and be summarized as follows：
IGBT：Insulated Gate Bipolar Transistor, insulated gate bipolar transistor；
MOSFET：Metal-Oxide-Semiconductor Field-Effect Transistor, metal-oxide
Semiconductor field effect transistor；
PWM：Pulse Width Modulation, pulse width modulation.
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 description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of making creative work
The every other embodiment being obtained, broadly falls into the scope of this utility model protection.
The embodiment of the present application provides a kind of on-off circuit and controls series resonant circuit more, this many controls series resonant circuit
Including on-off circuit and LC series resonance ring, described LC series resonance ring includes resonance ejection coil L and resonant capacitance C.Resonance
One end of transmitting coil L is connected with one end of described resonant capacitance C, the other end of described resonance ejection coil L and positive source V
+ be connected, the other end ground connection of described resonant capacitance C.
Refer to Fig. 1, a kind of electricity of many controls series resonant circuit of the inclusion on-off circuit providing for the embodiment of the present application
Lu Tu.On-off circuit includes：
N number of switching tube (using K1 in Fig. 1, K2 ..., KN represent N number of switching tube) in parallel, the first end of N number of switching tube is equal
Be connected with one end of described resonant capacitance C, the second end of N number of switching tube is all connected with the other end of resonant capacitance C, N be more than
Positive integer equal to 2.
Wherein, in same time, N number of switching tube, only one of which switching tube is in the conduction state, the conducting of N number of switching tube
Frequency sum is the resonant frequency of LC series resonance ring, and turn-on frequency is switching tube frequency in the conduction state.
N number of switching tube is all in parallel on connecting, but they are all asynchronous switchings, during the conducting of each of which switching tube
Between/turn-off time is all different, specifically, in a harmonic period of LC series resonance ring, open for one in N number of switching tube
Close pipe ON/OFF once, i.e. in same harmonic period, switching tube A is in the conduction state for only one of which, be now in turning on
The switching tube A of state is that LC series resonance ring charges, when that is, the ON time of switching tube A is the charging of LC series resonance ring
Between, after this switching tube A ON time terminates, need after the electric discharge of LC series resonance ring terminates, next switching tube B just meeting
Enter conducting state, the time before switching tube A ON time terminates to turn on to next switching tube B, is LC series resonance
The discharge time of ring, it is, the harmonic period of LC series resonance ring includes charging interval and discharge time.
In the same time it is desirable to a switching tube effect in the conduction state is, it is that LC series resonance ring charges, makes LC
The resonance of series resonance ring constantly maintains down, the every ON/OFF of switching tube once, LC series resonance ring charging and discharging one
Secondary, that is, produce a resonance, therefore, the resonant frequency of LC series resonance ring is exactly the summation of the turn-on frequency of N number of switching tube.Example
As if the resonant frequency of LC series resonance ring is 70, then N can be equal to 70, then each switching tube only needs to 1S conducting one
Secondary, or N can be equal to 35, and each switching tube only needs to 1S and turns on twice, or N can be 30, some switches
Pipe 1S turns on 4 times, and some switching tube 1S turn on 5 times, and some 1S turn on 1 time etc..Each switching tube in the embodiment of the present application
Turn-on frequency can different it is also possible to identical, the embodiment of the present application is not especially limited to this.
Conversely speaking, when resonant frequency one timing of LC series resonance ring, the turn-on frequency of each switching tube can be
The 1/N of resonant frequency, or the turn-on frequency of a part of switching tube be 2/N, 3/N or 4/N etc., can be according in practical situation
The performance of switching tube is set, larger, longer the opening of performance that the turn-on frequency of switching tube of good performance can be arranged
It is smaller that the turn-on frequency of pass pipe can be arranged.If the turn-on frequency of each switching tube is identical, if resonant frequency is f0, switch
The switching frequency of pipe is fk, that is,：
Resonant frequency f0=N* switching frequency fk, or, switching frequency fk=resonant frequency f0/N.
The embodiment of the present application, can control the LC series resonance ring altofrequency of upper frequency with the switching tube of lower frequency
Transmitting magnetic field energy, here it is the practical significance of the embodiment of the present application.
Switching tube can be with IGBT or MOSFET.This utility model embodiment breaker in middle pipe can be NMOSFET, now first
End can be drain electrode, and corresponding second end is source electrode, and control end is grid；Switching tube can be PMOSFET, and now first end is
Source electrode, the second end is drain electrode, and control end is grid；Switching tube can be IGBT, and now first end is colelctor electrode, corresponding second
Hold as emitter stage, control end is grid.
With two with individual (containing two) resonance ejection coil series, parallel, series-parallel connection, form an equivalent coil, can replace
For the resonance ejection coil L in this utility model embodiment.
With two with individual (containing two) resonant capacitance series, parallel, series-parallel connection, form an equivalent tank electric capacity, can replace
For the resonant capacitance C in this utility model embodiment.
With two with individual (containing two) paralleled power switches, to increase control electric current, form an equivalent switch pipe, can replace
For the switching tube in this utility model embodiment.
This utility model embodiment provides a kind of on-off circuit, and this on-off circuit includes the switching tube of N number of parallel connection, same
One time, in N number of described switching tube, only one of which switching tube is in the conduction state, and each switching tube turns on and disconnects once, LC
Series resonance ring just produces a resonance, N number of switching tube turn-on frequency sum be LC series resonance ring resonant frequency, that is, by
N number of switching tube turns in turn and disconnects, and to control LC series resonance ring high-frequency emission magnetic field energy.For each switching tube
Speech, conducting and the frequency disconnecting are not very high, thus not allowing to produce heat, will not damage easily yet, improve stability, by
Can be less expensive switching tube on market in N number of switching tube, the cost of therefore increase less it might even be possible to ignore.
It is understood that for the asynchronous controlling realizing N number of switching tube, needing one and can export N road control signal
Signal source, so said switching circuit can also include：Signal source SG.
As shown in Fig. 2 a kind of many controls series resonant circuit of the inclusion on-off circuit providing for the embodiment of the present application is another
The circuit diagram of implementation.
K1 in Fig. 2, K2 ..., KN represent N number of switching tube.It is that the N road that signal source SG produces controls that S1, S2 ... SN represents
Signal.Signal source SG is powered by low-tension supply Vd, and signal source SG, LC series resonance ring is all altogether.
" " it is the reference point that relative level is zero, it is often referred to the negative pole of power supply.
The oscillogram of the N road control signal of signal source SG output as shown in Figure 3.It is with control signal as pwm signal in Fig. 3
As a example, relation between the N road control signal illustrating.It is the N road control signal that signal source SG produces that S1, S2 ... SN represents.
N number of control signal shown in Fig. 3 is so that the turn-on frequency of N number of switching tube is identical.
Signal source SG includes N number of signal output part, and described signal source SG generates N road control signal, each road control signal
A corresponding signal output part, the frequency of described N road control signal is identical；N number of signal output part of described signal source SG respectively with N
The control end of individual described switching tube corresponds and is connected；At least N number of output high level in the control signal of described signal source output N road
Moment is the arithmetic progression with the harmonic period of described LC series resonance ring as tolerance, the described height in each described control signal
The amplitude of level is more than or equal to the conducting voltage of the switching tube being driven by described control signal.
From figure 3, it can be seen that the persistent period of the high level of each road control signal is identical, other times are low electricity
Flat, in high level lasting time, switching tube is in the conduction state, when that is, the persistent period of high level is the conducting of switching tube
Between, in the embodiment of the present application, control signal can only include high level signal, and that is, the control end of switching tube simply enters control
Signal, switching tube is at conducting state, is otherwise constantly in off-state.Certainly, control signal can include high level letter
Number and low level signal.
Due to each road control signal drive a switching tube, as long as the amplitude of the high level signal in control signal be more than etc.
The conducting voltage of the switching tube driving in it.Control signal can be pwm signal, triangular wave, sine wave etc..
As shown in figure 3, abscissa express time, from the time, it is sequentially output control signal SN, SN-1 ..., S2, S1,
Iterative cycles export above-mentioned control signal it is possible to take turns the ON time of the N number of switching tube of flow control.
Certainly, the turn-on frequency of each switching tube can be different, as long as now as shown in figure 4, exporting N number of control signal pair
In at least N number of output high level moment answered, be the arithmetic progression with the harmonic period of described LC series resonance ring as tolerance, that is,
Can.
Assume LC series resonance ring resonant frequency be 50, N=49, then can allow either switch pipe control signal such as
Shown in control signal SN.
LC series resonance ring produces a resonance within a d time.
The operating frequency of the N road control signal of signal source SG output is identical, but the resonance week in a LC series resonance ring
On the same time in phase, only one of which signal output part output control signal.
Optionally it is assumed that the harmonic period of LC series resonance ring is d, the control of each signal output part output of signal source SG
Signal processed makes the ON time of switching tube be less than d/2, and that is, the high level time of control signal is less than d/2.
Optionally, control signal, could the work of pull switch pipe after needing to amplify through overdriven amplifier.Signal source
SG can include N number of driving amplifier, and each road control signal that described signal source produces is defeated via driving amplifier described in
Go out, the outfan of N number of described driving amplifier is N number of signal output part of described signal source.
It is now, above-mentioned that " amplitude of the described high level in each described control signal is more than or equal to by described control signal
In the conducting voltage of the switching tube driving ", control signal refers to the control signal of output after driving amplifier.
Signal source SG and N number of driving amplifier can share a low-tension supply.
As shown in figure 5, the another realization of many controls series resonant circuit of the inclusion on-off circuit providing for the embodiment of the present application
The circuit diagram of mode.
SG represents signal source, and S1, S2 ... SN is the N road control signal that it produces；A1, A2 ... AN represents N number of respectively
Driving amplifier；K1, K2 ... KN is N number of switching tube.Wherein, K1, K2 ... KN can be MOSFET or IGBT.Signal source
SG, driving amplifier can share low-tension supply Vd.Signal source SG, driving amplifier, LC series resonance ring are all altogether.
If the amplitude of the control signal of signal source SG output is sufficiently large, can open without being driven by driving amplifier
Guan Guan, can directly drive switching tube conducting and disconnect.
It should be noted that each embodiment in this specification is all described by the way of going forward one by one, each embodiment weight
Point explanation is all difference with other embodiment, between each embodiment identical similar partly mutually referring to.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or new using this practicality
Type.Multiple modifications to these embodiments will be apparent from for those skilled in the art, is 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 wide scope consistent with features of novelty.
Claims (6)
1. it is characterised in that being applied to LC series resonance ring, described LC series resonance ring includes resonance ejection to a kind of on-off circuit
Coil and resonant capacitance, one end of described resonance ejection coil is connected with one end of described resonant capacitance, described resonance ejection line
The other end of circle is connected with positive source, the other end ground connection of described resonant capacitance, and described on-off circuit includes：
N number of switching tube in parallel, the first end of N number of described switching tube is all connected with one end of described resonant capacitance, N number of described opens
The second end closing pipe is all connected with the other end of described resonant capacitance, and N is the positive integer more than or equal to 2；
Wherein, in the same time, in N number of described switching tube, only one of which switching tube is in the conduction state, N number of described switching tube
Turn-on frequency sum is the resonant frequency of described LC series resonance ring, and described turn-on frequency is that described switching tube is in the conduction state
Frequency.
2. according to claim 1 on-off circuit it is characterised in that described on-off circuit also includes：
Signal source, described signal source includes N number of signal output part, and described signal source generates N road control signal, controls described in each road
Signal processed corresponds to a signal output part；
N number of signal output part of described signal source is corresponded with the control end of N number of described switching tube respectively and is connected；
In the control signal of described signal source output N road, at least N number of output high level moment is humorous with described LC series resonance ring
Shake the arithmetic progression that the cycle is tolerance, and the amplitude of the described high level in each described control signal is more than or equal to by described control
The conducting voltage of the switching tube that signal drives.
3. according to claim 2 on-off circuit it is characterised in that described signal source also includes：N number of driving amplifier, institute
The each road control signal stating signal source generation exports via driving amplifier described in, the output of N number of described driving amplifier
Hold the N number of signal output part for described signal source.
4. according to claim 1 on-off circuit it is characterised in that described switching tube be Metal-Oxide Semiconductor field effect
Answer transistor MOSFET or insulated gate bipolar transistor IGBT.
5. according to claim 1 on-off circuit it is characterised in that described resonant capacitance is equivalent tank electric capacity, described humorous
The transmitting coil that shakes is equivalent tank transmitting coil and/or described switching tube is equivalent switch pipe.
6. much a kind of control series resonant circuit it is characterised in that include described on-off circuit as arbitrary in claim 1 to 5 and
LC series resonance ring, described LC series resonance ring includes resonance ejection coil and resonant capacitance, and the one of described resonance ejection coil
End is connected with one end of described resonant capacitance, and the other end of described resonance ejection coil is connected with positive source, described resonance electricity
The other end ground connection held.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620836693.2U CN206004420U (en) | 2016-08-03 | 2016-08-03 | On-off circuit and control series resonant circuit more |
| 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 |
|---|---|---|---|
| CN201620836693.2U CN206004420U (en) | 2016-08-03 | 2016-08-03 | On-off circuit and control series resonant circuit more |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206004420U true CN206004420U (en) | 2017-03-08 |
Family
ID=58199082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620836693.2U Active CN206004420U (en) | 2016-06-01 | 2016-08-03 | On-off circuit and control series resonant circuit more |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206004420U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026422A (en) * | 2016-08-03 | 2016-10-12 | 中惠创智无线供电技术有限公司 | Switching circuit and multi-control series resonant 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 |
-
2016
- 2016-08-03 CN CN201620836693.2U patent/CN206004420U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106026422A (en) * | 2016-08-03 | 2016-10-12 | 中惠创智无线供电技术有限公司 | Switching circuit and multi-control series resonant circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201012 Address after: Room 133-134, First Park, Longcheng Street Overseas Students (Longgang) Pioneer Park, Longgang District, Shenzhen City, Guangdong Province Patentee after: ZONECHARGE (SHENZHEN) WIRELESS POWER SUPPLY TECHNOLOGY Co.,Ltd. Address before: 264003, 11, Mingda West Road, Laishan District, Shandong, Yantai Patentee before: ZHONG HUI POWERISE WIRELESS POWER TECHNOLOGY Ltd. |
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| TR01 | Transfer of patent right |