CN108988504A - A kind of electric energy transmission device, reception device and wireless charging system - Google Patents
A kind of electric energy transmission device, reception device and wireless charging system Download PDFInfo
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- CN108988504A CN108988504A CN201810663945.XA CN201810663945A CN108988504A CN 108988504 A CN108988504 A CN 108988504A CN 201810663945 A CN201810663945 A CN 201810663945A CN 108988504 A CN108988504 A CN 108988504A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 101
- 230000008878 coupling Effects 0.000 claims abstract description 48
- 238000010168 coupling process Methods 0.000 claims abstract description 48
- 238000005859 coupling reaction Methods 0.000 claims abstract description 48
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 230000005611 electricity Effects 0.000 claims description 13
- 239000003990 capacitor Substances 0.000 claims 1
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- 238000013461 design Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 230000006698 induction Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000004088 simulation Methods 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
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- 125000004122 cyclic group Chemical group 0.000 description 3
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- 238000004804 winding Methods 0.000 description 3
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- 230000005672 electromagnetic field Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/50—Circuit arrangements or systems for wireless supply or distribution of electric power using additional energy repeaters between transmitting devices and receiving devices
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- H02J7/025—
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of electric energy transmission device, reception device and wireless charging system, for the height of wireless charging required distance in the prior art, the problem of poor user experience, a kind of electric energy transmission device and electric energy reception device are provided, electric energy transmission device includes the source coil and transmitting coil for being set to first substrate two sides, electric energy reception device includes the receiving coil and loading coil for being set to the second substrate two sides, pass through the design of four coil of electric energy transmission device and electric energy reception device, enhance the relaying effect of magnetic coupling wireless transmission, to realize the more remote wireless power transmission of transmitting terminal and receiving end, the user experience is improved.
Description
Technical field
The present invention relates to technical field of electric power, more specifically to a kind of electric energy transmission device, reception device and wireless
Charging system.
Background technique
Wireless power transmission mainly utilizes electromagnetic field couples technology, and with electric field, magnetic field is that carrier carries out energy transmission, realizes
Energy is transferred to a kind of effective mode of movement of receiving end from transmitting terminal.With the continuous development of science and technology, wireless energy transfer skill
Art can be higher and higher in the application of electronic equipment.Wireless power transmission technology can be divided into electromagnetic radiation from energy transmission principle
Three kinds of formula, electromagnetic induction manifold type, magnet coupled resonant type modes, regardless of mode, the distance of wireless energy transfer is wanted
It asks higher, that is, when carrying out energy transmission, needs transmitting terminal and receiving end is in close proximity, be even close to, it is clear that this
The wireless power transmission scheme user experience of sample is bad.
Summary of the invention
The technical problem to be solved in the present invention is that the transmission of existing radio power needs transmitting terminal and receiving end apart from small, use
The problem of family experience difference provides a kind of electric energy transmission device for the technical problem, including is separately positioned on first substrate two sides
Source coil and transmitting coil, the source coil is one-turn coil, and transmitting coil is multi-turn coil, the source coil and the hair
Resonance frequency between ray circle is in the difference range needed for generating magnetic coupling resonance；In the operating condition, institute is passed sequentially through
It states between the receiving coil in magnetic coupling resonance, the transmitting coil and the electric energy reception device between source coil and transmitting coil
Magnetic coupling resonance, the magnetic coupling resonance between the receiving coil and loading coil, give electric energy wireless transmission to the electric energy
Reception device.
Optionally, the resonance frequency of the source coil, transmitting coil is within the scope of 13.56MHz ± Δ f；Wherein, Δ f
Less than or equal to preset threshold.
Optionally, the source coil is equipped with the first resonant capacitance.
Optionally, the transmitting coil is identical as the size of the receiving coil, the source coil and the loading coil
Size it is identical.
Optionally, the appearance profile of the source coil and the transmitting coil is rectangle or circle.
The present invention also provides a kind of electric energy reception devices, including are separately positioned on the second substrate two sides.Receiving coil and
Loading coil, the receiving coil are multi-turn coil, and loading coil is one-turn coil, the receiving coil and the loading coil
Between resonance frequency difference in the difference range needed for generating magnetic coupling resonance；In the operating condition, institute is passed sequentially through
State transmitting coil on magnetic coupling resonance between receiving coil and loading coil, the receiving coil and electric energy transmission device it
Between magnetic coupling resonance, the magnetic coupling resonance between the transmitting coil and source coil, the transmission of wireless receiving electric energy transmission device
Electric energy.
Optionally, the resonance frequency of the receiving coil, loading coil is within the scope of 13.56MHz ± Δ f；Wherein, Δ
F is less than or equal to preset threshold.
Optionally, the loading coil is equipped with the second resonant capacitance.
Optionally, the appearance profile of the receiving coil and the loading coil is rectangle or circle.
The present invention also provides a kind of wireless charging systems, including power supply unit and electric storage device, and the power supply unit is extremely
It less include signal source and above-mentioned electric energy transmission device, the electric storage device includes at least battery and above-mentioned electric energy receives dress
It sets；In the operating condition, the signal source input signal is to the electric energy transmission device, by magnetic coupling resonant transmission to described
Electric energy reception device, and electric energy is transferred to the battery.
Beneficial effect
The present invention provides a kind of electric energy transmission device, reception device and wireless charging system, for wireless in the prior art
Charging distance requires high, the problem of poor user experience, provides a kind of electric energy transmission device and electric energy reception device, electric energy transmitting dress
Source coil and transmitting coil including being set to first substrate two sides are set, electric energy reception device includes being set to the second substrate two sides
Receiving coil and loading coil magnetic coupling is enhanced by the design of four coil of electric energy transmission device and electric energy reception device
The relaying effect of wireless transmission improves user so that the more remote wireless power transmission of transmitting terminal and receiving end can be realized
Experience.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the electric energy transmission device structural schematic diagram that first embodiment of the invention provides；
Fig. 2 is the electric energy reception device structural schematic diagram that second embodiment of the invention provides；
Fig. 3 is relational graph between the system efficiency of transmission that third embodiment of the invention provides and distance；
Fig. 4 is the power graph of the port 1 that third embodiment of the invention provides and port 2 with distance change；
Fig. 5 is the Z parameter figure of the port 1 that third embodiment of the invention provides and port 2 with distance change；
Fig. 6 is that the electric energy transmission device that third embodiment of the invention provides and the experiment porch that electric energy reception device constructs show
It is intended to；
Fig. 7 is the simulation result and experimental result contrast schematic diagram that third embodiment of the invention provides；
Fig. 8 is a kind of wireless charging system composition schematic diagram that fourth embodiment of the invention provides.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
In subsequent description, it is only using the suffix for indicating such as " module ", " component " or " unit " of element
Be conducive to explanation of the invention, itself there is no a specific meaning.Therefore, " module ", " component " or " unit " can mix
Ground uses.
First embodiment
Fig. 1 is electric energy transmission device structural schematic diagram provided in this embodiment, which includes being respectively set
Source coil 101 and transmitting coil 102 on 103 two sides of first substrate, source coil 101 are one-turn coil, and transmitting coil 102 is more
Turn coil, the resonance frequency between source coil 101 and transmitting coil 102 is in the difference range needed for generating magnetic coupling resonance；
In the operating condition, magnetic coupling resonance, transmitting coil 102 and the electric energy between source coil 101 and transmitting coil 102 are passed sequentially through
The magnetic coupling resonance between magnetic coupling resonance, receiving coil and loading coil between receiving coil in reception device, will be electric
Electric energy reception device can be radioed to.
In the present embodiment, the wireless power transmission principle taken is magnetic coupling resonance.Magnet coupled resonant type wireless transmission of electricity
Than there is essential difference in simple magnetic coupling wireless power transmission principle, magnet coupled resonant type wireless is transmitted electricity the concept of stronger tuning vibration.
Resonance frequency between coil is set as identical by mode through reasonable settings, when system works under this frequency, coil it
Between resonance occurs, the transmission of electric energy can be completed.The transmission of electricity of magnetic coupling resonance has farther compared with simple magnetic coupling transmission of electricity
Charging distance, and logical barrier property is more preferable, influence of the barrier to transmission between transmitting and reception is little.
In the present embodiment, under working condition, the transmission path of energy is that source coil 101 is transferred to from signal source, then
Successively by the magnetic induction resonance between source coil 101 and transmitting coil 102, the magnetic between transmitting coil 102 and receiving coil
The magnetic induction resonance between resonance and receiving coil and loading coil is incuded, to complete the transmission of electric energy.In this process
In, there are magnetic induction resonance between each adjacent windings, that is, the resonance frequency between these coils is all satisfied generation magnetic
Requirement needed for coupled resonance.Although for magnetic coupling resonance occurs, it is required that the resonance frequency usually between coil is equal,
But be substantially impossible thing to the resonance frequency between two coils to be made into completely the same, in fact, resonance frequency
The identical difference for referring to the resonance frequency between coil of rate is in allowed limits.This range allowed, according to resonance frequency
The size of rate and different from, the present embodiment do not limit it specifically.
Optionally, in the present embodiment, the resonance frequency of source coil 101, transmitting coil 102 is in 13.56MHz ± Δ f
In range；Wherein, Δ f is less than or equal to preset threshold.In other words, in the present embodiment source coil 101 and transmitting coil 102 resonance
Frequency is equal, and is equal to 13.56MHz；And since resonance frequency between coil can not be completely the same, the present embodiment allows line
The resonance frequency of circle fluctuates above or below 13.56MHz, the range i.e. 13.56MHz ± Δ f of fluctuation.Optionally, Δ f takes
Value can resonance frequency between 1.5MHz, that is, coil in the range of 13.56MHz ± 1.5MHz, so that it may generate
Magnetic induction resonance.According to FITD (Finite-Integral Time-Domain) algorithm to magnetic coupling resonance wireless energy transfer
System model carries out simulation and analysis, and under the frequency of 13.56MHZ, the transmission of magnetic coupling resonance wireless energy transfer system is imitated
Rate maximum can reach 64%.After constructing wireless energy transfer platform, measuring efficiency of transmission by experiment can achieve 54%.
In addition, the resonance frequency of 13.56MHz, is equally the working frequency of NFC；That is, each line in the present embodiment
Circle, other than it can be used as used in wireless power transmission, may be also used in NFC scene.
It optionally, in the present embodiment, can be in order to enable the resonance frequency of source coil 101 is in desired range
First resonant capacitance is set on source coil 101.For example, in order to enable the resonance frequency of source coil 101 is 13.56MHz, it can be with
The first resonant capacitance that 425pF is added on source coil 101, can be with by way of the eigen mode solution in electromagnetic simulation software
Obtain the resonant parameter of coil.
Optionally, in the present embodiment, transmitting coil 102 is identical as the size of receiving coil, source coil 101 and load line
The size of circle is identical.Transmitting coil 102 and source coil 101 are the coils on electric energy transmission device, and receiving coil and load
Coil is then the coil in electric energy reception device；This two groups of coils can be symmetrical arranged, and reduce manufacture difficulty, that is, will transmitting
Coil 102 and receiving coil are set as same size, set same size for source coil 101 and loading coil, this is
Since source coil 101 and loading coil are unicoils, transmitting coil 102 and receiving coil are multi-coils.In other words, source line
Circle 101 and loading coil；It is that function is different, and structure can be consistent between transmitting coil 102 and receiving coil.
Optionally, in the present embodiment, the appearance profile of source coil 101 and transmitting coil 102 is rectangle or circle.Source line
The shape of circle 101 and transmitting coil 102 can be determined according to the shape of first substrate 103, it is however generally that, substrate is all rectangle
, then the appearance profile of source coil 101 and transmitting coil 102 may be set to be rectangle, it can be pros more specifically
Shape.
In the present embodiment, the resonance frequency of the 13.56MHz of source coil 101 and transmitting coil 102 in order to obtain, it is optional
, source coil 101 is by line width 5mm, and the cyclic annular microstrip line of the square of internal diameter 60mm is constituted, and transmitting coil 102 is then by line width
5mm, line-spacing 2.5mm, internal diameter outer diameter are respectively 75mm, and the 7 circle helix microstrip lines of 125mm are constituted；Wherein, microstrip line with a thickness of
0.035mm.In addition, loading coil and source coil 101 are consistent, and by line width 5mm, the cyclic annular microstrip line structure of the square of internal diameter 60mm
At receiving coil is then consistent with transmitting coil 102, and by line width 5mm, line-spacing 2.5mm, internal diameter outer diameter is respectively 75mm, 125mm's
7 circle helix microstrip lines are constituted.Table 1 is please referred to, table 1 shows resonant parameter, inductance value and the corresponding external Q of each coil
Value, that is, quality factor.
Table 1
| Source coil 101 | Transmitting coil 102 | Receiving coil | Loading coil | |
| Inductance/uH | 3.03 | 16.35 | 16.35 | 3.03 |
| Frequency/MHz | 13.532 | 13.407 | 13.407 | 13.532 |
| External Q | 0.83 | 100.41 | 100.41 | 0.83 |
As can be drawn from Table 1, the resonance frequency of source coil 101 and loading coil is 13.532MHz, transmitting coil 102
Resonance frequency with receiving coil is 13.407MHz, is all fallen within the scope of 13.56MHz ± 1.5MHz, that is to say, that at these
It can produce magnetic induction resonance between coil, carry out the transmission of electric energy.
A kind of electric energy transmission device is present embodiments provided, source coil and hair including being separately positioned on first substrate two sides
Ray circle, source coil are one-turn coil, and transmitting coil is multi-turn coil, and the resonance frequency between source coil and transmitting coil is producing
In difference range needed for magnetisation coupled resonance；In the operating condition, the magnetic coupling between source coil and transmitting coil is passed sequentially through
Close magnetic coupling resonance, receiving coil and the loading coil between the receiving coil in resonance, transmitting coil and electric energy reception device
Between magnetic coupling resonance, give electric energy wireless transmission to electric energy reception device, to improve the transmission range of wireless power transmission, mention
User experience is risen.
Second embodiment
Fig. 2 is electric energy reception device structural schematic diagram provided in this embodiment, which includes being respectively set
On 203 two sides of the second substrate.Receiving coil 201 and loading coil 202, receiving coil 201 be multi-turn coil, loading coil
202 be one-turn coil, and the difference of the resonance frequency between receiving coil 201 and loading coil 202 is generating magnetic coupling resonance institute
In the difference range needed；In the operating condition, pass sequentially through magnetic coupling resonance between receiving coil 201 and loading coil 202,
Between magnetic coupling resonance, transmitting coil and source coil between transmitting coil on receiving coil 201 and electric energy transmission device
Magnetic coupling resonance, the electric energy of wireless receiving electric energy transmission device transmission.
In the present embodiment, the wireless power transmission principle taken is magnetic coupling resonance.Magnet coupled resonant type wireless transmission of electricity
Than there is essential difference in simple magnetic coupling wireless power transmission principle, magnet coupled resonant type wireless is transmitted electricity the concept of stronger tuning vibration.
Resonance frequency between coil is set as identical by mode through reasonable settings, when system works under this frequency, coil it
Between resonance occurs, the transmission of electric energy can be completed.The transmission of electricity of magnetic coupling resonance has farther compared with simple magnetic coupling transmission of electricity
Charging distance, and logical barrier property is more preferable, influence of the barrier to transmission between transmitting and reception is little.
In the present embodiment, under working condition, the transmission path of energy is that source coil is transferred to from signal source, then according to
The secondary magnetic induction resonance by between source coil and transmitting coil, the magnetic induction resonance between transmitting coil and receiving coil 201,
And the magnetic induction resonance between receiving coil 201 and loading coil 202, to complete the transmission of electric energy.In this course, often
All exist between a adjacent windings the resonance frequency between magnetic induction resonance, that is, these coils be all satisfied occur magnetic coupling it is humorous
Requirement needed for vibration.
Optionally, in the present embodiment, the resonance frequency of receiving coil 201, loading coil 202 is in 13.56MHz ± Δ
Within the scope of f；Wherein, Δ f is less than or equal to preset threshold.The resonance frequency of source coil and transmitting coil is equal in the present embodiment, and
It is equal to 13.56MHz；And since resonance frequency between coil can not be completely the same, the present embodiment allows the resonance frequency of coil
Rate fluctuates above or below 13.56MHz, the range i.e. 13.56MHz ± Δ f of fluctuation.Optionally, the value of Δ f can be
1.5MHz。
In addition, the resonance frequency of 13.56MHz, is equally the working frequency of NFC；That is, each line in the present embodiment
Circle, other than it can be used as used in wireless power transmission, may be also used in NFC scene.
Optionally, in the present embodiment, in order to enable the resonance frequency of loading coil 202 may be used also in desired range
The second resonant capacitance to be arranged on loading coil 202.For example, in order to enable the resonance frequency of loading coil 202 is
13.56MHz can add the second resonant capacitance of 425pF on loading coil 202, pass through the sheet in electromagnetic simulation software
Levy mould solve mode it can be concluded that coil resonant parameter.
Optionally, in the present embodiment, transmitting coil is identical as the size of receiving coil 201, source coil and loading coil
202 size is identical.Transmitting coil and source coil are the coils on electric energy transmission device, and receiving coil 201 and load line
Circle 202 is then the coil in electric energy reception device；This two groups of coils can be symmetrical arranged, and reduce manufacture difficulty, that is, will hair
Ray circle and receiving coil 201 are set as same size, set same size for source coil and loading coil 202, this
It is since source coil and loading coil 202 are unicoils, transmitting coil and receiving coil 201 are multi-coils.In other words, source
Coil and loading coil 202；It is that function is different, and structure can be consistent between transmitting coil and receiving coil 201.
Optionally, in the present embodiment, the appearance profile of receiving coil 201 and loading coil 202 is rectangle or circle.Line
The shape of circle can be determined according to the shape of the second substrate 203, it is however generally that, substrate is all rectangle, then receiving coil
201 and the appearance profile of loading coil 202 may be set to be rectangle, more specifically, can be square.
In the present embodiment, the resonance frequency of the 13.56MHz of source coil and transmitting coil optionally loads in order to obtain
Coil 202 is made of line width 5mm, the cyclic annular microstrip line of the square of internal diameter 60mm, and receiving coil 201 is then by line width 5mm, line-spacing
2.5mm, internal diameter outer diameter are respectively 75mm, and the 7 circle helix microstrip lines of 125mm are constituted.Wherein, the composition of loading coil 202 and source
Coil can be consistent, and the composition of receiving coil 201 then can be consistent with transmitting coil.
A kind of electric energy reception device is present embodiments provided, including is separately positioned on the second substrate two sides.Receiving coil
And loading coil, receiving coil are multi-turn coil, loading coil is one-turn coil, the resonance between receiving coil and loading coil
The difference of frequency is in the difference range needed for generating magnetic coupling resonance；In the operating condition, it passes sequentially through receiving coil and bears
Carry magnetic coupling resonance, the hair between the transmitting coil on magnetic coupling resonance, receiving coil and the electric energy transmission device between coil
Magnetic coupling resonance between ray circle and source coil, the electric energy of wireless receiving electric energy transmission device transmission, to improve wireless
The transmission range of transmission of electricity, the user experience is improved.
3rd embodiment
Below by resonance frequency be 13.56MHz for, in various embodiments of the present invention electric energy sending device and electric energy connect
The transmission of receiving apparatus is illustrated.
Wireless power transmission model is established in CST software by structural parameters above, in the input port of source coil
Impedance with the output port of loading coil is set as 50, and the distance of transmitting coil and receiving coil is set as d23, wherein d23's
Distance range is 100mm between 300mm；After setting solving condition, it can solve to obtain 20 groups of data, be handled to obtain
Between electric energy sending device and electric energy reception device the efficiency of transmission of wireless power transmission with distance variation, as shown in Figure 3.
In Fig. 3, abscissa is the distance between transmitting coil and receiving coil distance, and ordinate is then that system passes
Defeated efficiency transfer efficiency, when system operating frequency is when 13.56MHz, in resonance shape between each coil
State, the efficiency of energy transmission reaches maximum at this time.The maximum of system passes when coil citing 210mm available according to simulation result
Defeated efficiency is 64%, and wherein energy transmission efficiency reaches 50% or more range in 150mm between 270mm.
Meanwhile the power and impedance data of port 1 and port 2 are checked according to the result of software emulation, it is handled to obtain
The power of port 1 and port 2 with distance change curve and Z parameter with distance change curve, as shown in Figure 4,5, wherein Fig. 4
What middle transverse direction dotted line represented be signal input power as 0.5W, in Fig. 4 transverse direction dotted line represents be the input impedance of signal as
50。
The abscissa of Fig. 3 and Fig. 4 is the distance between transmitting coil and receiving coil, and ordinate is respectively power
Power and impedance Z parameter parameter.As we can see from the figure with the increase of distance, the value of Z11 and Z12 are with distance
Increase is gradually increased；And with the variation of distance, when the value of Z11 is closer to 50, the power that energy enters port 1 is more connect
Nearly 0.5W.When the value of Z12 is closer to 50, the received power in port 2 reaches maximum value.It is analyzed, can be obtained according to data
Whether conclusion out, the value of Z11 match the watt level for determining that energy enters port 1, and whether the value of Z12, which matches, determines energy
The watt level of port 2 is transferred to from port 1.In summary, it is known that the impedance matching of system port is influence system transmission effect
An important factor for rate size.
In order to verify above-mentioned simulation result, following experimental data is now provided, is related to one group of electric energy transmission device 61 and electricity
Energy reception device 62, wherein electric energy transmission device 61 includes source coil (driving coil in other words) and transmitting coil, and electric energy receives
Device 62 then includes receiving coil and loading coil, and electric energy transmission device 61 and electric energy reception device 62 are oppositely arranged, source coil
It is located at outside with loading coil, it is opposite that transmitting coil and receiving coil are located inside.Line width on each coil is 5mm, wherein sending out
The internal diameter outer diameter of ray circle and receiving coil is respectively 75mm and 125mm, line-spacing 2.5mm.On source coil and loading coil
Corresponding resonant capacitance and SMA adapter are welded in face, then build experiment porch, used network point using Network Analyzer
The model of analyzer is AV3656B, as shown in Figure 6.
After completing check and correction to Network Analyzer, start to carry out experiment measurement.In measurement process, the position of hold-in winding is hung down
Directly in horizontal plane, the distance between fixed coil is measured, and the distance between coil fixed range is 100mm to 300mm, step
Diameter is 10mm.By measurement, the data result of 20 groups of efficiencies of transmission is obtained, is carried out by the arrangement to data and with simulation curve
Comparison, the efficiency of transmission curve of available wireless power transmission, compares emulation and experimental result correlation curve is as shown in Figure 7.Fig. 7
In, simulated data is emulation data, and measured data is experimental data, it can be seen from figure 7 that being sent out by electric energy
The experiment porch for the wireless power transmission that injection device and electric energy reception device are constituted carries out the efficiency of transmission that efficiency measurement obtains and is up to
56%, the data slightly below emulated.Influence in view of the electromagnetic environment in experiment to system transmission performance, experiment measurement
Efficiency of transmission size and emulate obtained result and coincide substantially.
Fourth embodiment
Fig. 8 is a kind of wireless charging system composition schematic diagram provided in this embodiment；The wireless charging system includes power supply
Device 1 and electric storage device 2, power supply unit 1 include at least the electric energy transmission device in signal source 11 and various embodiments of the present invention
10, electric storage device 2 includes at least the electric energy reception device 20 in battery 21 and various embodiments of the present invention；In the operating condition, believe
Number 11 input signal of source by magnetic coupling resonant transmission to electric energy reception device 20, and electric energy is passed to electric energy transmission device 10
It is defeated by battery 21.
In the present embodiment, the frequency for the signal that signal source 11 is issued is consistent with the resonance frequency of each coil, in this way may be used
With the reception on source coil, transmitting coil and electric energy reception device 20 since signal source 11, on power transfer
Electric energy is transferred to battery 21 in such a way that magnetic induction couples by coil, loading coil, is powered, is charged for battery 21.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal (can be mobile phone, computer, service
Device, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (10)
1. a kind of electric energy transmission device, which is characterized in that source coil and emission lines including being separately positioned on first substrate two sides
Circle, the source coil are one-turn coil, and transmitting coil is multi-turn coil, the resonance between the source coil and the transmitting coil
Frequency is in the difference range needed for generating magnetic coupling resonance；In the operating condition, the source coil and emission lines are passed sequentially through
Magnetic coupling resonance, institute between magnetic coupling resonance, the transmitting coil between circle and the receiving coil in electric energy reception device
The magnetic coupling resonance between receiving coil and loading coil is stated, gives electric energy wireless transmission to the electric energy reception device.
2. electric energy transmission device as described in claim 1, which is characterized in that the resonance frequency of the source coil, transmitting coil
Within the scope of 13.56MHz ± Δ f；Wherein, Δ f is less than or equal to preset threshold.
3. electric energy transmission device as claimed in claim 1 or 2, which is characterized in that the source coil is equipped with the first resonance electricity
Hold.
4. electric energy transmission device as claimed in claim 1 or 2, which is characterized in that the transmitting coil and the receiving coil
Size it is identical, the source coil is identical as the size of the loading coil.
5. electric energy transmission device as claimed in claim 1 or 2, which is characterized in that the source coil and the transmitting coil
Appearance profile is rectangle or circle.
6. a kind of electric energy reception device, which is characterized in that including being separately positioned on the second substrate two sides.Receiving coil and load
Coil, the receiving coil are multi-turn coil, and loading coil is one-turn coil, between the receiving coil and the loading coil
Resonance frequency difference in the difference range needed for generating magnetic coupling resonance；In the operating condition, described connect is passed sequentially through
Between magnetic coupling resonance, the receiving coil between take-up circle and loading coil and the transmitting coil on electric energy transmission device
Magnetic coupling resonance between magnetic coupling resonance, the transmitting coil and source coil, the electricity of wireless receiving electric energy transmission device transmission
Energy.
7. electric energy reception device as claimed in claim 6, which is characterized in that the resonance frequency of the receiving coil, loading coil
Rate is within the scope of 13.56MHz ± Δ f；Wherein, Δ f is less than or equal to preset threshold.
8. such as electric energy reception device described in claim 5 or 6, which is characterized in that the loading coil is equipped with the second resonance
Capacitor.
9. such as electric energy reception device described in claim 5 or 6, which is characterized in that the receiving coil and the loading coil
Appearance profile be rectangle or circle.
10. a kind of wireless charging system, which is characterized in that including power supply unit and electric storage device, the power supply unit is at least
Including signal source and electric energy transmission device as described in any one in claim 1-5, the electric storage device include at least battery and
Electric energy reception device as claim in any one of claims 6-9；In the operating condition, the signal source input signal is to the electricity
Energy emitter gives the electric energy reception device by magnetic coupling resonant transmission, and electric energy is transferred to the battery.
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| CN102484397A (en) * | 2010-07-02 | 2012-05-30 | 松下电器产业株式会社 | Contactless power transmission device |
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| 余威等: "基于平面微带线圈无线电力传输效率研究", 《软件》 * |
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