CN106560976A - Wireless charging transmitting system and wireless charging receiving system - Google Patents
Wireless charging transmitting system and wireless charging receiving system Download PDFInfo
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- CN106560976A CN106560976A CN201610485136.5A CN201610485136A CN106560976A CN 106560976 A CN106560976 A CN 106560976A CN 201610485136 A CN201610485136 A CN 201610485136A CN 106560976 A CN106560976 A CN 106560976A
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- H02J7/025—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The invention discloses a wireless charging transmitting system and a wireless charging receiving system. The wireless charging transmitting system comprises a PFC circuit, an inversion circuit, a transmitting coil, an inductively compensated circuit connected in series between the inversion circuit and the transmitting coil, and a first capacitance compensation circuit in parallel connection with the transmitting coil, wherein the PFC circuit, the inversion circuit, the transmitting coil, the inductively compensated circuit and the first capacitance compensation circuit are sequentially connected with an AC power supply. The inductively compensated circuit is provided with an inductance adjustment device which is used for adjusting the size of an inductance value, and the first capacitance compensation circuit is provided with a first capacitance adjustment device which is used for adjusting the size of a capacitance value. According to the technical scheme of the invention, the system can adjust the output power of the wireless charging system.
Description
Technical field
The present invention relates to wireless charging technical field, more particularly to a kind of wireless charging emission system and wireless charging are received
System.
Background technology
Wireless charging, exactly realizes electric energy non-contact transmission by medium of magnetic field, has broad application prospects.
During electric energy transmission is carried out using wireless charging system, occur to become in the working condition of electric energy reception device
When changing or changing electric energy reception device, in fact it could happen that wireless charging system output is with electric energy reception device rated power not
The situation of matching.Therefore, need the adjustable wireless charging system of output badly.
The content of the invention
The main object of the present invention is to provide a kind of wireless charging emission system, it is intended to reaches and launches including the wireless charging
The adjustable purpose of wireless charging system output of system.
For achieving the above object, wireless charging emission system proposed by the present invention includes being sequentially connected the PFC of alternating current power supply
Circuit, inverter circuit, transmitting coil, and the inductively compensated circuit that is series between the inverter circuit and the transmitting coil and
First capacitor compensating circuit in parallel with the transmitting coil, the inductively compensated circuit is with to adjust its inductance value size
Inductance adjustment device, first capacitor compensating circuit with to adjust its capacitance size the first capacitance adjustment fill
Put.
Preferably, the inductively compensated circuit includes at least one inductance, and the inductance adjustment device accesses institute for control
State the first controlling switch of the inductance value between inverter circuit and the transmitting coil.
Preferably, first capacitor compensating circuit includes at least one electric capacity, and first regulating mechanism of capacitor is control
System accesses the second controlling switch of the inductance value between the inverter circuit and the transmitting coil.
Preferably, the wireless charging emission system also includes being series at the inductively compensated circuit and the transmitting coil
Between the second capacitor compensating circuit, second capacitor compensating circuit is with the second electric capacity to adjust its capacitance size
Adjusting means.
Preferably, second capacitor compensating circuit includes at least one electric capacity, and second regulating mechanism of capacitor is control
System accesses the 3rd controlling switch of the capacitance between the inverter circuit and the transmitting coil.
The present invention also propose a kind of wireless charging reception system, including for transmitting coil in wireless charging emission system
The receiving coil of coupling and the current rectifying and wave filtering circuit being connected with the receiving coil, and in parallel with the receiving coil first is secondary
Side capacitor compensating circuit and the secondary inductance compensation circuit being series between the receiving coil and the current rectifying and wave filtering circuit, institute
The first secondary capacitor compensating circuit is stated with the first secondary regulating mechanism of capacitor to adjust its capacitance size, the secondary
Inductively compensated circuit is with the secondary inductance adjusting means to adjust inductance value size.
Preferably, the secondary inductance compensation circuit includes at least one inductance, and the secondary inductance adjusting means is control
System accesses the first secondary controlling switch of the inductance value between the receiving coil and the current rectifying and wave filtering circuit.
Preferably, the first secondary capacitor compensating circuit includes at least one electric capacity, the first secondary capacitance adjustment
Device is the second secondary controlling switch that control accesses the capacitance between the receiving coil and the current rectifying and wave filtering circuit.
Preferably, the wireless charging reception system also includes being series at the receiving coil and secondary inductance compensation
The second secondary capacitor compensating circuit between circuit, the second secondary capacitor compensating circuit is with big to adjust its capacitance
The second little secondary regulating mechanism of capacitor.
Preferably, the second secondary capacitor compensating circuit includes at least one electric capacity, the second secondary capacitance adjustment
Device is the 3rd secondary controlling switch that control accesses the capacitance between the receiving coil and the current rectifying and wave filtering circuit.
Technical solution of the present invention is by using setting inductively compensated circuit and the first electric capacity in wireless charging emission system
Compensation circuit so that inductively compensated circuit, the first capacitor compensating circuit and transmitting coil produce resonance.And inductively compensated circuit
With the inductance adjustment device to adjust its inductance value size, the first capacitor compensating circuit is with big to adjust its capacitance
The first little regulating mechanism of capacitor.So, in the wireless charging system course of work including the wireless charging emission system, can
So that the inductance value of inductively compensated circuit is adjusted by inductance adjustment device, and the first electric capacity is adjusted by the first regulating mechanism of capacitor
The capacitance of compensation circuit, so as to change the resonant frequency of inductively compensated circuit, the first capacitor compensating circuit and transmitting coil.By
When the resonant frequency in inductively compensated circuit, the first capacitor compensating circuit and transmitting coil changes, its output can occur
Change.Therefore, technical solution of the present invention can reach the wireless charging system output including the wireless charging emission system
Adjustable purpose.
Description of the drawings
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
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
High-level schematic functional block diagrams of the Fig. 1 for one embodiment of wireless charging system；
Fig. 2 is the high-level schematic functional block diagram of one embodiment of wireless charging emission system of the present invention；
Fig. 3 is the high-level schematic functional block diagram of another embodiment of wireless charging emission system of the present invention；
Fig. 4 is the high-level schematic functional block diagram of one embodiment of wireless charging reception system of the present invention；
Fig. 5 is the high-level schematic functional block diagram of another embodiment of wireless charging reception system of the present invention；
Electrical block diagrams of the Fig. 6 for another embodiment of wireless charging system.
Drawing reference numeral explanation：
The realization of the object of the invention, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
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
Site preparation is described, it is clear that described embodiment a part of embodiment only of the invention, rather than the embodiment of whole.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In the relative position relation under a certain particular pose (as shown in drawings) between each part, motion conditions etc. are explained, if should
When particular pose changes, then directionality indicates also correspondingly to change therewith.
In addition, the description for being related to " first ", " second " etc. in the present invention is only used for describing purpose, and it is not intended that referring to
Show or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", "
Two " at least one this feature can be expressed or be implicitly included to feature.In addition, the technical scheme between each embodiment can
To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical scheme occurs
It is conflicting or will be understood that the combination of this technical scheme is not present when cannot realize, also not in the protection model of application claims
Within enclosing.
The present invention proposes a kind of wireless charging emission system.
Shown as shown in Figures 2 and 3, in one embodiment, wireless charging emission system includes being sequentially connected alternating current power supply
Pfc circuit 10, inverter circuit 20, transmitting coil 60, and the inductance that is series between inverter circuit 20 and transmitting coil 60 mends
Circuit 30 and first capacitor compensating circuit 40 in parallel with transmitting coil 60 are repaid, inductively compensated circuit 30 is with to adjust its electricity
The inductance adjustment device 300 of inductance value size, the first capacitor compensating circuit 40 are electric with first to adjust its capacitance size
Hold adjusting means 400.
It should be noted that in the present embodiment, pfc circuit 10 is for being converted to DC source by alternating current power supply；Inversion electricity
Road 20 is for being converted into high-frequency ac by direct current；Inductively compensated circuit 30, the first capacitor compensating circuit 40 are used for and transmitting coil
60 produce resonance.
It is noted that wireless charging system includes switching frequency and resonant frequency；Wherein, switching frequency is by system
Control chip it is (not shown) control, resonant frequency by transmitting coil in wireless charging system 60 inductance value and other participation
The parameter of the device of resonance is together decided on.When switching frequency and resonant frequency change, its output can change.
When there is alternating current power supply to be input into pfc circuit 10, Jing pfc circuits 10, inverter circuit 20, inductively compensated circuit successively
30 and first capacitor compensating circuit 40 carry out exporting after respective handling, when needing to adjust the output of wireless charging system,
The inductance value of inductively compensated circuit 30 is adjusted by inductance adjustment device 300, or is adjusted by the first regulating mechanism of capacitor 400
The capacitance of the first capacitor compensating circuit 40, or while the electricity of inductively compensated circuit 30 is adjusted by inductance adjustment device 300
Inductance value and the first regulating mechanism of capacitor 400 adjust the capacitance of the first capacitor compensating circuit 40, with change inductively compensated circuit 30,
The resonant frequency of the first capacitor compensating circuit 40 and transmitting coil 60, so as to change wireless charging emission system resonant frequency, reaches
To the purpose for adjusting its output.
In a preferred embodiment, above-mentioned inductively compensated circuit 30 includes at least one inductance, and inductance adjustment device 300 is
Control accesses the first controlling switch K1 of the inductance value between inverter circuit 20 and transmitting coil 60.Wherein, multiple inductance can be with
It is series connection, or parallel connection, can also be series-parallel connection, be not limited herein.Inductively compensated circuit 30 can include one
Individual first controlling switch K1, it is also possible to including multiple first controlling switches K1.
When inductively compensated circuit 30 includes first controlling switch K1, first controlling switch K1 and inductance can be made
An inductance in compensation circuit 30 is connected in series, if the first controlling switch K1 closure, is connected with first controlling switch K1
The inductance of connection is accessed between inverter circuit 20 and transmitting coil 60；If the first controlling switch K1 disconnects, open with the first control
The inductance that pass K1 is connected in series is not accessed between inverter circuit 20 and transmitting coil 60.In this manner it is possible to pass through the first control open
Whether the inductance for closing K1 controls connection connected in series is accessed between inverter circuit 20 and transmitting coil 60, changes inductance compensation electricity
The inductance value on road 30.
When inductively compensated circuit 30 includes multiple first controlling switches K1, each first controlling switch K1 can be made with electricity
An inductance in sense compensation circuit is connected in series, if several first controlling switches K1 therein are closed, and remaining first
Controlling switch K1 disconnects, then some inductance being connected in series with the first controlling switch K1 of closure access inverter circuit 20 and transmitting
Between coil 60.In this manner it is possible to pass through the inductance that the control of the first controlling switch K1 accesses inverter circuit 20 and transmitting coil 60
Quantity is changing the inductance value of inductively compensated circuit 30.
It is understood that can also make to be connected in series per one first controlling switch K1 and multiple inductance, or, make each
First controlling switch K1 is connected with one or more inductance in parallel, etc..First controlling switch K1 and one is adopted herein
The mode that individual inductance is connected in series, is only used for explaining technical solution of the present invention, technical solution of the present invention is not limited.
Specifically, with reference to Fig. 6, in a preferred embodiment, above-mentioned inductively compensated circuit 30 includes first for being connected in parallel
Inductance L1 and the second inductance L2, each inductance connect one first controlling switch K1.It is easy to understand, by changing two first controls
The on off state of system switch K1, can reach the purpose being adjusted to the inductance value of inductively compensated circuit 30.
It should be noted that in one embodiment, above-mentioned inductively compensated circuit 30 includes at least one controllable impedance, and (figure is not
Illustrate), controllable impedance includes inductance core (not shown) and inductance coil (not shown).So, filled by adjustment of inductance
The relative position relation for putting 300 regulation inductance cores and inductance coil can just change the inductance value of inductively compensated circuit 30.When
So, inductively compensated circuit 30 realize adjustable mode include but is not limited to it is listed above go out embodiment, other adjust inductance mend
The embodiment of inductance value of circuit 30 is repaid also in this patent protection domain, is no longer repeated one by one herein.
In a preferred embodiment, above-mentioned first capacitor compensating circuit 40 includes at least one electric capacity, the first capacitance adjustment
Device 400 accesses the second controlling switch K2 of the capacitance between inverter circuit 20 and transmitting coil 60 for control.Wherein, it is multiple
Electric capacity can be series connection, or parallel connection, can also be series-parallel connection, be not limited herein.First capacitor compensating circuit
40 can include second controlling switch K2, it is also possible to including multiple second controlling switches K2.
When the first capacitor compensating circuit 40 includes second controlling switch K2, can make second controlling switch K2 with
A capacitances in series connection in first capacitor compensating circuit 40, if the second controlling switch K2 closure, is opened with second control
The electric capacity that pass K2 is connected in series is accessed between inverter circuit 20 and transmitting coil 40；If the second system switch K2 disconnects, with second
The electric capacity that controlling switch K2 is connected in series is not accessed between inverter circuit 20 and transmitting coil 60.In this manner it is possible to pass through second
Controlling switch K2 controls whether the electric capacity of connection connected in series is accessed between inverter circuit 20 and transmitting coil 60, changes first
The capacitance of capacitor compensating circuit 40.
When the first capacitor compensating circuit 40 includes multiple second controlling switches K2, each second controlling switch K2 can be made
It is connected with a capacitances in series in the first capacitor compensating circuit 40, if several second controlling switches K2 therein are closed, and
Remaining second controlling switch K2 disconnects, then some electric capacity being connected in series with the second controlling switch K2 of closure access inversion electricity
60 between road 20 and transmitting coil.In this manner it is possible to passing through the control of the second controlling switch K2 accesses inverter circuit 20 and emission lines
The electric capacity quantity of circle 60 is changing the capacitance of the first capacitor compensating circuit 40.
It is understood that can also make to be connected with multiple capacitances in series per one second controlling switch K2, or, make each
Second controlling switch K2 and one or more electric capacity are connected in parallel, etc..Second controlling switch K2 and one is adopted herein
The mode of individual capacitances in series connection, is only used for explaining technical solution of the present invention, technical solution of the present invention is not limited.
Specifically, with reference to Fig. 6, in a preferred embodiment, above-mentioned first capacitor compensating circuit 40 includes what is be connected in parallel
First electric capacity C1 and the second electric capacity C2, each electric capacity connect one second controlling switch K2.It is easy to understand, by changing two the
The on off state of two controlling switches K2, can reach the purpose being adjusted to the capacitance of the first capacitor compensating circuit 40.
It should be noted that in one embodiment, above-mentioned first capacitor compensating circuit 40 includes at least one tunable capacitor
(not shown), tunable capacitor include top crown (not shown) and bottom crown (not shown).So, adjusted by the first electric capacity
The facing area of the regulation top crown of regulating device 400 and bottom crown can just change the capacitance of the first capacitor compensating circuit 40.When
So, the first capacitor compensating circuit 40 realize adjustable mode include but is not limited to it is listed above go out embodiment, other adjust the
The embodiment of the capacitance of one capacitor compensating circuit also, in this patent protection domain, is no longer repeated herein one by one.
Further, wireless charging emission system also includes being series between inductively compensated circuit 30 and transmitting coil 60
Second capacitor compensating circuit 50, the second capacitor compensating circuit 50 are filled with the second capacitance adjustment to adjust its capacitance size
Put 500.
It is noted that in the present embodiment, the second capacitor compensating circuit 50 is for electric with inductively compensated circuit 30, first
Hold compensation circuit 40 and transmitting coil 60 produces resonance.Wherein, inductively compensated circuit 30, the first capacitor compensating circuit 40 and second
50 circuit of capacitance compensation constitutes LCC compensation networks, and the output of wireless charging system can be subject to the inductance value of transmitting coil 60
And the impact of the inductance value of inductively compensated circuit 30.
When there is alternating current power supply to be input into pfc circuit 10, Jing pfc circuits 10 successively, inverter circuit 20, inductively compensated circuit
30th, the first capacitor compensating circuit 40 and the second electric capacity 50 are exported after carrying out respective handling.When needing to adjust wireless charging system
The inductance value and/or electricity of any one or the corresponding compensation circuit of multiple adjusting meanss adjustment during output, can be passed through
Capacitance.Such as, the inductance value of inductively compensated circuit 30 is adjusted by inductance adjustment device 300, or passes through the first capacitance adjustment
Device 400 adjusts the capacitance of the first capacitor compensating circuit 40, or while adjusts inductance compensation by inductance adjustment device 300
The inductance value of circuit 30 and the first regulating mechanism of capacitor 400 adjust the capacitance of the first capacitor compensating circuit 40, so as to change nothing
The output of line charging system.
It should be noted that in theory, when resonant frequency is consistent with switching frequency, wireless charging system has highest
Energy transmission efficiency.In the present embodiment, the inductance value of inductively compensated circuit 30 is being adjusted to adjust the output of wireless charging system
The capacitance of the first capacitor compensating circuit 40 and/or the second capacitor compensating circuit 50 during power, can be adjusted simultaneously, keep wireless
The resonant frequency of charging emission system is constant, makes system keep resonant condition.In this manner it is possible to reach ensure wireless charging system
Under conditions of system has higher-energy efficiency of transmission, the purpose is adjusted by the output of wireless charging system.
In a preferred embodiment, above-mentioned second capacitor compensating circuit 50 includes at least one electric capacity, the second capacitance adjustment
Device 500 accesses the 3rd controlling switch K3 of the capacitance between inverter circuit 20 and transmitting coil 60 for control.Wherein, it is multiple
Electric capacity can be series connection, or parallel connection, can also be series-parallel connection, be not limited herein.Second capacitor compensating circuit
50 can include the 3rd controlling switch K3, it is also possible to including multiple 3rd controlling switches K3.
When the second capacitor compensating circuit 50 includes three controlling switch K3, can make the 3rd controlling switch K3 with
A capacitances in series connection in second capacitor compensating circuit 50, if the 3rd controlling switch K3 closure, is opened with the 3rd control
The electric capacity that pass K3 is connected in series is accessed between inverter circuit 20 and transmitting coil 60；If the 3rd controlling switch K3 disconnects, with the
The electric capacity that three controlling switches K3 are connected in series is not accessed between inverter circuit 20 and transmitting coil 60.In this manner it is possible to pass through
Three controlling switches K3 control whether electric capacity connected in series is accessed between inverter circuit 20 and transmitting coil 60, change second electric
Hold the capacitance of compensation circuit 50.
When the second capacitor compensating circuit 50 includes multiple three controlling switches K3, each 3rd controlling switch K3 can be made
It is connected with a capacitances in series in the second capacitor compensating circuit 50, if several the 3rd controlling switches K3 therein are closed, and
Remaining the 3rd controlling switch K3 disconnects, then some electric capacity being connected in series with the 3rd controlling switch K3 of closure access inversion electricity
Between road 20 and transmitting coil 60.In this manner it is possible to passing through the control of the 3rd controlling switch K3 accesses inverter circuit 20 and emission lines
The electric capacity quantity of circle 60 is changing the capacitance of the second capacitor compensating circuit 50.
It is understood that can also make to be connected with multiple capacitances in series per one the 3rd controlling switch K3, or, make each
3rd controlling switch K3 and one or more electric capacity are connected in parallel, etc..The 3rd controlling switch K3 and one is adopted herein
Individual capacitances in series connection, is only used for explaining technical solution of the present invention, technical solution of the present invention is not limited.
Specifically, with reference to Fig. 6, in a preferred embodiment, above-mentioned second capacitor compensating circuit 50 includes what is be connected in parallel
3rd electric capacity C3 and the 4th electric capacity C4, each electric capacity connect one the 3rd controlling switch K3.It is easy to understand, by changing two the
The on off state of three controlling switches K3, can reach the purpose being adjusted to the capacitance of the second capacitor compensating circuit 50.
It should be noted that in one embodiment, above-mentioned second capacitor compensating circuit 50 includes at least one tunable capacitor
(not shown), tunable capacitor include top crown (not shown) and bottom crown (not shown).So, adjusted by the second electric capacity
The facing area of the regulation top crown of regulating device 500 and bottom crown can just change the capacitance of the second capacitor compensating circuit 50.When
So, the second capacitor compensating circuit 50 realize adjustable mode include but is not limited to it is listed above go out embodiment, other adjust the
The embodiment of the capacitance of two capacitor compensating circuits 50 also, in this patent protection domain, is no longer repeated herein one by one.
Accordingly, the present invention also proposes a kind of wireless charging reception system, in one embodiment, wireless charging reception system
Including with the receiving coil 70 of the coupling of transmitting coil 60 in wireless charging emission system, and the rectifying and wave-filtering that is connected of receiving coil 70
Circuit 100, and the first secondary capacitor compensating circuit 85 in parallel with receiving coil 70 and be series at receiving coil 70 and rectification filter
Secondary inductance compensation circuit 80 between wave circuit 100, the first secondary capacitor compensating circuit 85 is with to adjust its capacitance
First secondary regulating mechanism of capacitor (not shown) of size, secondary inductance compensation circuit 80 is with to adjust inductance value size
Secondary inductance adjusting means (not shown).
It should be noted that in the present embodiment, receiving coil 70 is used for the magnetic energy for receiving the output of transmitting coil 60, and magnetic
Electric energy can be converted into be exported, current rectifying and wave filtering circuit 100 is carried out at rectifying and wave-filtering for the electric energy for receiving receiving coil 70
Reason；Secondary inductance compensation circuit 80, the first secondary capacitor compensating circuit 85 for receiving coil 70 produce resonance.
It is noted that wireless charging system includes switching frequency and resonant frequency；Wherein, switching frequency is by system
Control chip control, resonant frequency by receiving coil in wireless charging system 70 inductance value and other participate in resonance device
Parameter together decide on.When switching frequency and resonant frequency change, its output can change.
Energy difference Jing secondary inductances compensation circuit 80 that receiving coil is received, the first secondary capacitor compensating circuit 85 and whole
Stream filter circuit 100 is exported after carrying out respective handling, when needing to adjust the output of wireless charging system, by secondary electricity
The inductance value of sense adjusting means adjustment secondary inductance compensation circuit 80, or by the first secondary regulating mechanism of capacitor adjustment first
The capacitance of secondary capacitor compensating circuit 85, or while secondary inductance compensation circuit 80 is adjusted by secondary inductance adjusting means
Inductance value and by the first secondary regulating mechanism of capacitor adjust the first secondary capacitor compensating circuit 85 capacitance, to change pair
The resonant frequency of side inductively compensated circuit 80, the first secondary capacitance compensation 85 and receiving coil 70, connects so as to change wireless charging
System resonance frequencies are received, the purpose for adjusting its output is reached.
In a preferred embodiment, above-mentioned secondary inductance compensation circuit 80 includes at least one inductance, inductance adjustment device
The first secondary controlling switch that the inductance value between receiving coil 70 and current rectifying and wave filtering circuit 100 is accessed for control is (not shown
Go out).Wherein, multiple inductance can be series connection, or parallel connection, can also be series-parallel connection, be not limited herein.Secondary
Inductively compensated circuit 80 can include a first secondary controlling switch, it is also possible to including multiple first secondary controlling switches.
When secondary inductance compensation circuit 80 includes a first secondary controlling switch, open can the first secondary control
Pass be connected in series with an inductance in secondary inductance compensation circuit 80, if the first secondary controlling switch close, with this first
The inductance that secondary controlling switch is connected in series is accessed between receiving coil 70 and current rectifying and wave filtering circuit 100；If the first secondary is controlled
Switch off, then the inductance being connected in series with the first secondary controlling switch does not access receiving coil 70 and current rectifying and wave filtering circuit 100
Between.In this manner it is possible to whether the inductance for passing through the first secondary controlling switch control connection connected in series accesses receiving coil 70
And current rectifying and wave filtering circuit 100 between, change the inductance value of secondary inductance compensation circuit 80.
When secondary inductance compensation circuit 80 includes multiple first secondary controlling switches, each first secondary control can be made
Switch is connected in series with an inductance in secondary inductance compensation circuit 80, if several the first secondary controlling switches therein are closed
Close, and remaining first secondary controlling switch disconnects, then some inductance being connected in series with the first secondary controlling switch of closure
Access between receiving coil 70 and current rectifying and wave filtering circuit 100.In this manner it is possible to pass through the control access of the first secondary controlling switch connect
The inductance quantity of take-up circle 70 and current rectifying and wave filtering circuit 100 is changing the inductance value of secondary inductance compensation circuit 80.
It is understood that can also make to be connected in series per one first secondary controlling switch and multiple inductance, or, make every
One first secondary controlling switch is connected with one or more inductance in parallel, etc..Opened using the first secondary control herein
The mode being connected in series with an inductance is closed, is only used for explaining technical solution of the present invention, technical solution of the present invention is not carried out
Limit.
Specifically, in a preferred embodiment, above-mentioned secondary inductance compensation circuit 80 includes the 3rd inductance being connected in parallel
(not shown) and the 4th inductance (not shown), each inductance are connected one first secondary controlling switch.It is easy to understand, pass through
Change the on off state of two the first secondary controlling switches, can reach and the inductance value of secondary inductance compensation circuit 80 is adjusted
The purpose of section.
It should be noted that in one embodiment, above-mentioned secondary inductance compensation circuit 80 includes at least one controllable impedance
(not shown), controllable impedance include inductance core (not shown) and inductance coil (not shown).So, by secondary electricity
Sense adjusting means adjusts inductance core and can just change secondary inductance compensation circuit 80 with the relative position relation of inductance coil
Inductance value.Certainly, secondary inductance compensation circuit 80 realize adjustable mode include but is not limited to it is listed above go out embodiment, its
The embodiment of the inductance value of its regulation secondary inductance compensation circuit 80 also, in this patent protection domain, is no longer gone to live in the household of one's in-laws on getting married herein one by one
State.
In a preferred embodiment, above-mentioned first secondary capacitor compensating circuit 85 includes at least one electric capacity, the first secondary
Regulating mechanism of capacitor is that the second secondary control of the capacitance between control access receiving coil 70 and current rectifying and wave filtering circuit 100 is opened
Close.Wherein, multiple electric capacity can be series connection, or parallel connection, can also be series-parallel connection, be not limited herein.First
Secondary capacitor compensating circuit 85 can include a second secondary controlling switch, it is also possible to open including the control of multiple second secondary
Close.
When the first secondary capacitor compensating circuit 85 includes a second secondary controlling switch, the second secondary control can be made
System switch is connected with a capacitances in series in the first secondary capacitor compensating circuit 85, if the second secondary controlling switch closure,
Access between receiving coil 70 and current rectifying and wave filtering circuit 100 with the electric capacity that the second secondary controlling switch is connected in series；If second
Secondary controlling switch disconnects, then the electric capacity being connected in series with the second secondary controlling switch does not access receiving coil 70 and rectifying and wave-filtering
Between circuit 100.In this manner it is possible to whether the electric capacity for passing through the second secondary controlling switch control connection connected in series accesses reception
Between coil 70 and current rectifying and wave filtering circuit 100, change the capacitance of the first secondary capacitor compensating circuit 85.
When the first secondary capacitor compensating circuit 85 includes multiple second secondary controlling switches, each second secondary can be made
Controlling switch is connected with a capacitances in series in the first secondary capacitor compensating circuit 85, if several the second secondary controls therein
System switch closure, and remaining second secondary controlling switch disconnects, then be connected in series with the second secondary controlling switch of closure
Some electric capacity are accessed between receiving coil 70 and current rectifying and wave filtering circuit 100.In this manner it is possible to pass through the second secondary controlling switch control
System accesses electric capacity quantity between receiving coil 70 and current rectifying and wave filtering circuit 100 to change the first secondary capacitor compensating circuit 85
Capacitance.
It is understood that can also make to be connected with multiple capacitances in series per one second secondary controlling switch, or, make every
One first secondary controlling switch and one or more electric capacity are connected in parallel, etc..Opened using the second secondary control herein
The mode that pass is connected with a capacitances in series, is only used for explaining technical solution of the present invention, technical solution of the present invention is not carried out
Limit.
Specifically, in a preferred embodiment, above-mentioned first secondary capacitor compensating circuit 85 includes the 5th for being connected in parallel
Electric capacity (not shown) and the 6th electric capacity (not shown), each electric capacity are connected one second secondary controlling switch.It is easy to understand,
By the on off state for changing two the second secondary controlling switches, the electric capacity to the first secondary capacitor compensating circuit 85 can be reached
The purpose that value is adjusted.
It should be noted that in one embodiment, above-mentioned first secondary capacitor compensating circuit 85 includes that at least one is adjustable
Electric capacity (not shown), tunable capacitor include top crown (not shown) and bottom crown (not shown).So, it is secondary by first
Side regulating mechanism of capacitor adjusts top crown and the facing area of bottom crown can just change the first secondary capacitor compensating circuit 85
Capacitance.Certainly, the first secondary capacitor compensating circuit 85 realize adjustable mode include but is not limited to it is listed above go out enforcement
Example, other adjust the embodiment of the capacitance of the first capacitor compensating circuits 85 also in this patent protection domain, herein no longer
Repeat one by one.
Further, wireless charging reception system also includes being series between receiving coil 70 and secondary inductance compensation circuit
80 the second secondary capacitor compensating circuit 90, the second secondary capacitor compensating circuit 90 is with to adjust the of its capacitance size
Two secondary regulating mechanism of capacitor (not shown).
It is noted that in the present embodiment, the second secondary capacitor compensating circuit 90 for secondary inductance compensation circuit
80th, the first secondary capacitor compensating circuit 85 and receiving coil 70 produce resonance.Wherein, secondary inductance compensation circuit 80, first is secondary
Side capacitor compensating circuit 85 and the second secondary capacitor compensating circuit 90 constitute LCC compensation networks, the output work of wireless charging system
Rate can be affected by the inductance value of the inductance value of receiving coil 70 and secondary inductance compensation circuit 80.
The energy that receiving coil 70 is received distinguishes Jing the second secondary capacitor compensating circuits 90, the first secondary capacitor compensating circuit
85th, secondary inductance compensation circuit 80 and current rectifying and wave filtering circuit 100 are exported after carrying out respective handling.When needing to adjust wireless charging system
The electricity of any one or the corresponding secondary compensation circuit of multiple secondary-side regulation devices adjustment during the output of system, can be passed through
Capacitance and/or inductance value.Such as, the inductance value of secondary inductance compensation circuit 80 is adjusted by secondary inductance adjusting means, or
The capacitance of the first secondary capacitor compensating circuit 85 is adjusted by the first secondary regulating mechanism of capacitor, or while by secondary electricity
The inductance value and the first secondary regulating mechanism of capacitor of sense adjusting means adjustment secondary inductance compensation circuit 80 adjusts the first secondary electricity
Hold the capacitance of compensation circuit 85, so as to change the output of wireless charging system.
It should be noted that in theory, when resonant frequency is consistent with switching frequency, wireless charging system has highest
Energy transmission efficiency.In the present embodiment, the inductance value of secondary inductance compensation circuit 80 is being adjusted to adjust wireless charging system
During output, the electricity of first secondary capacitor compensating circuit 85 and/or second secondary capacitor compensating circuit 90 can be adjusted simultaneously
Capacitance, keeps the resonant frequency of wireless charging reception system constant, makes system keep resonant condition.In this manner it is possible to reach
Under conditions of ensureing that wireless charging system has higher-energy efficiency of transmission, the output of wireless charging system is adjusted
Purpose.
In a preferred embodiment, above-mentioned second secondary capacitor compensating circuit 90 includes at least one electric capacity, the second secondary
Regulating mechanism of capacitor is that the 3rd secondary control of the capacitance between control access receiving coil 70 and current rectifying and wave filtering circuit 100 is opened
Close (not shown).Wherein, multiple electric capacity can be series connection, or parallel connection, can also be series-parallel connection, do not do herein
Limit.Second secondary capacitor compensating circuit 90 can include a 3rd secondary controlling switch, it is also possible to secondary including multiple three
Side controlling switch.
When the second secondary capacitor compensating circuit 90 includes a 3rd secondary controlling switch, the 3rd secondary control can be made
System switch is connected with a capacitances in series in the second secondary capacitor compensating circuit 90, if the 3rd secondary controlling switch closure,
Access between receiving coil and current rectifying and wave filtering circuit with the electric capacity that the 3rd secondary controlling switch is connected in series；If the 3rd secondary control
System is switched off, then the electric capacity being connected in series with the 3rd secondary controlling switch does not access receiving coil 70 and current rectifying and wave filtering circuit
Between 100.In this manner it is possible to passing through the 3rd secondary controlling switch controls whether electric capacity connected in series accesses 70 He of receiving coil
Between current rectifying and wave filtering circuit 100, change the capacitance of the second secondary capacitor compensating circuit 90.
When the second secondary capacitor compensating circuit 90 includes multiple 3rd secondary controlling switches, each controlling switch can be made
It is connected with a capacitances in series in the second secondary capacitor compensating circuit 90, if several the 3rd secondary controlling switches therein are closed
Close, and remaining the 3rd secondary controlling switch disconnects, then some electric capacity being connected in series with the 3rd secondary controlling switch of closure
Access between receiving coil 70 and current rectifying and wave filtering circuit 100.In this manner it is possible to pass through the control access of the 3rd secondary controlling switch connect
Electric capacity quantity between take-up circle 70 and current rectifying and wave filtering circuit 100 is changing the capacitance of the second secondary capacitor compensating circuit 90.
It is understood that can also make to be connected with multiple capacitances in series per one the 3rd secondary controlling switch, or, make every
One the 3rd secondary controlling switch and one or more electric capacity are connected in parallel, etc..Opened using a 3rd secondary control herein
Pass is connected with a capacitances in series, is only used for explaining technical solution of the present invention, technical solution of the present invention is not limited.
Specifically, in a preferred embodiment, above-mentioned second secondary capacitor compensating circuit 90 includes the 7th for being connected in parallel
Electric capacity (not shown) and the 8th electric capacity (not shown), each electric capacity are connected one the 3rd secondary controlling switch.It is easy to understand,
By the on off state for changing two the 3rd secondary controlling switches, the electric capacity to the second secondary capacitor compensating circuit 90 can be reached
The purpose that value is adjusted.
It should be noted that in one embodiment, above-mentioned second secondary capacitor compensating circuit 90 includes that at least one is adjustable
Electric capacity (not shown), tunable capacitor include top crown (not shown) and bottom crown (not shown).So, it is secondary by second
Side regulating mechanism of capacitor adjusts top crown and the facing area of bottom crown can just change the second secondary capacitor compensating circuit 90
Capacitance.Certainly, the second secondary capacitor compensating circuit 90 realize adjustable mode include but is not limited to it is listed above go out enforcement
Example, other adjust the embodiment of the capacitance of the second secondary capacitor compensating circuits 90 also in this patent protection domain, herein
No longer repeat one by one.
Hereinafter, with reference to Fig. 1 to Fig. 6, illustrate the work of wireless charging emission system of the present invention and wireless charging reception system
Principle：
When there is alternating current power supply to be input into pfc circuit 10, alternating current power supply is converted to DC source and is conveyed by pfc circuit 10
To inverter circuit 20, DC source is converted to high-frequency ac power and by transmitting coil transmitting 60, rectification by inverter circuit 20
Filter circuit 100 is exported by the reception high-frequency ac power of receiving coil 70 and after being carried out rectifying and wave-filtering process.Reference picture
6, inverter circuit 20 includes multiple switch pipe, and the on off state of switching tube is controlled the control of chip, the switch frequency of switching tube
Rate is identical with the resonant frequency of transmitting coil 60 and receiving coil 70.
With reference to Fig. 6, it is assumed that the inductance value of inductively compensated circuit 30 is Lp0, the capacitance of the first capacitor compensating circuit 40 is
Cp0, the capacitance of the second capacitor compensating circuit 50 is Cp, the inductance value of transmitting coil 60 is Lp, the inductance value of receiving coil 70 is
Ls, the resonant frequency of wireless charging system is f, and resonance angular frequency is ω=2 π f, the mutual inductance of transmitting coil 60 and receiving coil 70
It is worth and is(k is the coefficient of coup).
When transmitting coil 60 and receiving coil 70 are operated in resonant frequency f, have Output voltage isWherein, UinThe virtual value of network inputs voltage, U are compensated for former limitoutFor
Secondary compensates the virtual value of net output voltage.
Above formula shows, in system resonance, the output voltage of wireless charging system and the inductance value of inductively compensated circuit 30
It is inversely proportional to, the mutual inductance to transmitting coil 60 and receiving coil 70 is directly proportional.In this manner it is possible to pass through to adjust inductively compensated circuit 30
Inductance value adjusting the output of wireless charging system.Further, when the inductance for only adjusting inductively compensated circuit 30
During value, former limit resonant frequency can change therewith, and hence it is also possible to the first capacitor compensating circuit 40 and/or the second capacitance compensation
The capacitance of circuit 50 is adjusted so that the resonant frequency of transmitting coil 60 and receiving coil 70 is constant, always works in humorous
Shake state, and then cause wireless charging system to keep efficient energy transmission.
It is noted that in order to strengthen the output of wireless charging system and the matching degree of energy acceptance device, also
Feedback system (not shown) can be set up, the feedback system can be with wireless charging reception system cooperating, it is also possible to same
When with wireless charging emission system and wireless charging reception system cooperating.Wherein, the feedback system can include control mould
Block and the power collection module for gathering wireless charging system output, control module are gathered according to power collection module
Data adjusting means is controlled so that the output of wireless charging system and the power phase needed for energy acceptance device
Matching.
It should be noted that in wireless charging system shown in Fig. 6, the compensation circuit of transmitting coil 60 is LCC compensation electricity
Road, and the compensation circuit of receiving coil 70 is series compensation circuit.In the other embodiments of wireless charging system, it is also possible to make
The compensation circuit of transmitting coil 60 is compensation circuit in series or in parallel, and the compensation circuit of receiving coil 70 is LCC compensation electricity
Road；The compensation circuit of the compensation circuit and receiving coil 70 of transmitting coil 60 can also be made to be LCC topology compensation circuits, which is defeated
Go out power adjustment principle it is identical with the adjustment principle of the output in the present embodiment, here is omitted.
The preferred embodiments of the present invention are the foregoing is only, the scope of the claims of the present invention is not thereby limited, it is every at this
Under the inventive concept of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/use indirectly
It is included in the scope of patent protection of the present invention in other related technical fields.
Claims (10)
1. a kind of wireless charging emission system, including being sequentially connected the pfc circuit of alternating current power supply, inverter circuit, transmitting coil, its
It is characterised by, the wireless charging emission system also includes the inductance being series between the inverter circuit and the transmitting coil
Compensation circuit and first capacitor compensating circuit in parallel with the transmitting coil, the inductively compensated circuit is with to adjust which
The inductance adjustment device of inductance value size, first capacitor compensating circuit are electric with first to adjust its capacitance size
Hold adjusting means.
2. wireless charging emission system as claimed in claim 1, it is characterised in that the inductively compensated circuit includes at least
Individual inductance, the inductance adjustment device are that control accesses first of the inductance value between the inverter circuit and the transmitting coil
Controlling switch.
3. wireless charging emission system as claimed in claim 1, it is characterised in that first capacitor compensating circuit include to
Few electric capacity, first regulating mechanism of capacitor are that control accesses the electric capacity between the inverter circuit and the transmitting coil
Second controlling switch of value.
4. the wireless charging emission system as described in claims 1 to 3 any one, it is characterised in that the wireless charging is sent out
Penetrating system also includes the second capacitor compensating circuit for being series between the inductively compensated circuit and the transmitting coil, described the
Two capacitor compensating circuits are with the second regulating mechanism of capacitor to adjust its capacitance size.
5. wireless charging emission system as claimed in claim 4, it is characterised in that second capacitor compensating circuit include to
Few electric capacity, second regulating mechanism of capacitor are that control accesses the electric capacity between the inverter circuit and the transmitting coil
3rd controlling switch of value.
6. a kind of wireless charging reception system, including the receiving coil for coupling with transmitting coil in wireless charging emission system
And the current rectifying and wave filtering circuit being connected with the receiving coil；Characterized in that, the wireless charging reception system also includes and institute
State the first in parallel secondary capacitor compensating circuit of receiving coil and be series at the receiving coil and the current rectifying and wave filtering circuit it
Between secondary inductance compensation circuit, the first secondary capacitor compensating circuit is secondary with first to adjust its capacitance size
Side regulating mechanism of capacitor, the secondary inductance compensation circuit is with the secondary inductance adjusting means to adjust inductance value size.
7. wireless charging reception system as claimed in claim 6, it is characterised in that the secondary inductance compensation circuit include to
A few inductance, the secondary inductance adjusting means are that control is accessed between the receiving coil and the current rectifying and wave filtering circuit
First secondary controlling switch of inductance value.
8. wireless charging reception system as claimed in claim 7, it is characterised in that the first secondary capacitor compensating circuit bag
At least one electric capacity is included, the first secondary regulating mechanism of capacitor accesses the receiving coil and rectifying and wave-filtering electricity for control
Second secondary controlling switch of the capacitance between road.
9. the wireless charging reception system as described in claim 6-8 any one, it is characterised in that the wireless charging is received
System also includes the second secondary capacitor compensating circuit being series between the receiving coil and the secondary inductance compensation circuit,
The second secondary capacitor compensating circuit is with the second secondary regulating mechanism of capacitor to adjust its capacitance size.
10. wireless charging reception system as claimed in claim 9, it is characterised in that the second secondary capacitor compensating circuit
Including at least one electric capacity, the second secondary regulating mechanism of capacitor accesses the receiving coil and the rectifying and wave-filtering for control
3rd secondary controlling switch of the capacitance between circuit.
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| CN201610485136.5A CN106560976B (en) | 2016-06-27 | 2016-06-27 | Wireless charging transmitting system and wireless charging receiving system |
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| CN107171449A (en) * | 2017-06-28 | 2017-09-15 | 成都汇翌科技有限公司 | POV LED screens reduce the electrical power transmission system and method for power supply disturbance and power |
| CN108183603A (en) * | 2017-11-09 | 2018-06-19 | 东莞理工学院 | A kind of single-stage is without bridge Sofe Switch resonance isolated form circuit of power factor correction |
| CN108808894A (en) * | 2018-07-16 | 2018-11-13 | 国网冀北电力有限公司电力科学研究院 | A kind of wireless charging system |
| CN108988502A (en) * | 2018-07-16 | 2018-12-11 | 国网冀北电力有限公司电力科学研究院 | A kind of adjusting method and device of wireless charging system |
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| CN112271789A (en) * | 2020-11-06 | 2021-01-26 | 广东长柏电器实业有限公司 | Wireless charging system for household appliances and charging method thereof |
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| CN107171449A (en) * | 2017-06-28 | 2017-09-15 | 成都汇翌科技有限公司 | POV LED screens reduce the electrical power transmission system and method for power supply disturbance and power |
| CN108183603A (en) * | 2017-11-09 | 2018-06-19 | 东莞理工学院 | A kind of single-stage is without bridge Sofe Switch resonance isolated form circuit of power factor correction |
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| CN109552086A (en) * | 2018-12-18 | 2019-04-02 | 深圳市信维通信股份有限公司 | A kind of wireless charging system for electric automobile and its control method |
| CN109552086B (en) * | 2018-12-18 | 2024-03-19 | 深圳市信维通信股份有限公司 | Wireless charging system of electric automobile and control method thereof |
| CN109617255A (en) * | 2018-12-26 | 2019-04-12 | 北京酷能科技有限公司 | Wireless charging receives circuit |
| CN110176870A (en) * | 2019-04-25 | 2019-08-27 | 绍兴文理学院元培学院 | A kind of output adjusting inverter |
| CN110460165A (en) * | 2019-07-30 | 2019-11-15 | 中国科学技术大学 | A kind of wireless charging transmitter and its control method |
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| CN112271789A (en) * | 2020-11-06 | 2021-01-26 | 广东长柏电器实业有限公司 | Wireless charging system for household appliances and charging method thereof |
| CN115313881A (en) * | 2022-09-02 | 2022-11-08 | 国网黑龙江省电力有限公司佳木斯供电公司 | Converter fault protection device |
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