CN106532981B - The design method of PCB coil for magnetic coupling resonance wireless power transmission systems - Google Patents
The design method of PCB coil for magnetic coupling resonance wireless power transmission systems Download PDFInfo
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- CN106532981B CN106532981B CN201611198575.4A CN201611198575A CN106532981B CN 106532981 B CN106532981 B CN 106532981B CN 201611198575 A CN201611198575 A CN 201611198575A CN 106532981 B CN106532981 B CN 106532981B
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Abstract
The invention discloses a kind of design methods of PCB coil for magnetic coupling resonance wireless power transmission systems, determine the transmission power 1w, distance 0.2m and resonance frequency 1.7MHz of magnetic coupling resonator system, the mathematical model for establishing system calculates the parameter of transmitting and receiving coil；The simplified model of system is established in Frequency Simulation Software ADS using the parameter for calculating acquisition in Matlab；Setup parameter post-simulation optimizes the coefficient of coup between the inductance value, resonant capacitance value and transmitting and receiving coil of coil；Determining can be according to formula optimization coil radius and coil turn after the coefficient of coup；The mock-up that coil is established in the Layout environment of ADS, determines the parameter of PCB coil.Guarantee coil line footpath precision, the consistency of line spacing and the straight property of coiling using printing technology；Exclude the reduction because of magnetic coupling resonator system efficiency of transmission caused by coil manufacturing technology precision problem.
Description
Technical field
The invention belongs to Coil technique field more particularly to a kind of PCB lines for magnetic coupling resonance wireless power transmission systems
The design method of circle.
Background technique
In magnetic coupling resonance wireless power transmission systems, the production precision of coil be decision systems power transmission efficiency factor it
One.And the coiling of coil different, line the technique that cannot unanimously wait of straight, line spacing would generally cannot be asked completely by line footpath thickness
The influence of topic causes system actual parameter not to be inconsistent with calculating parameter, reduces system efficiency of transmission.Wireless power transmission system is made at this stage
Coil in system is all that coiling forms, and the manufacture craft of coiling is that curved conducting wire is formed line together with wire adhesion
Circle.The conducting wire of coiling causes line footpath different due to making precision problem first, secondly may in coil-winding process
The abnormal bending of conducting wire occurs, again due to the thickness difference of viscose glue causes line spacing different, these reasons can all cause to make
It is variant with calculating parameter to make the coil parameter come out, the efficiency of magnetic coupling resonance wireless power transmission systems is caused to reduce.
In conclusion the production of magnetic coupling resonator system coil would generally different, line cannot be complete by line footpath thickness
The influence for the technological problems that straight, line spacing cannot be waited unanimously, causes system actual parameter not to be inconsistent with calculating parameter, reduces system
Efficiency of transmission.
Summary of the invention
The purpose of the present invention is to provide a kind of design sides of PCB coil for magnetic coupling resonance wireless power transmission systems
Method, it is intended to solve magnetic coupling resonator system coil production would generally by line footpath thickness different, line cannot completely straight, line
The influence for the technological problems that spacing cannot be waited unanimously causes system actual parameter not to be inconsistent with calculating parameter, reduces system transmission effect
The problem of rate.
The invention is realized in this way a kind of design method of the PCB coil for magnetic coupling resonance wireless power transmission systems,
The design method of the PCB coil for magnetic coupling resonance wireless power transmission systems the following steps are included:
Step 1, it is first determined transmission power 1w, distance 0.2m and the resonance frequency 1.7MHz of magnetic coupling resonator system make
The mathematical model of system is established with MATLAB, selection uses planar spiral-type coil, according to distance 0.2m, the power of system requirements
The parameter of the calculating transmitting and receiving coil such as 1W, resonance frequency 1.7MHz；Using calculating the parameter of acquisition in Matlab in high frequency
The simplified model of system is established in simulation software ADS；
Step 2, the inductance of the parameters post-simulation optimization coil such as setting input power, resonance frequency, distance, coil inductance
The coefficient of coup between value, resonant capacitance value and transmitting and receiving coil；Determining can be according to formula optimization line after the coefficient of coup
Enclose radius and coil turn；
Step 3 establishes the mock-up of coil in the Layout environment of ADS, sets thickness, the medium system of PCB medium
Number, copper thickness, dielectric loss coefficient etc. continue to carry out simulation optimization to coil using the EM limited element analysis technique function in ADS, most
The parameter of PCB coil is determined eventually.
Further, the parameter include coil inductance, coil line footpath, coil turn, coil-span, coil inner ring radius,
Coil outer ring radius.
Further, the calculation formula of the coil inductance are as follows:Wherein raCoil average half
Diameter, c are coil beam overall, and N is the number of turns.
Further, each parameter of the PCB coil are as follows: inductance value L=14.11uH, turn number N=16, line footpath a=
0.8mm, internal diameter R1=17mm, outer diameter R2=38mm, copper sheet is with a thickness of 1oz.
Another object of the present invention is to provide a kind of by the PCB coil for magnetic coupling resonance wireless power transmission systems
The obtained PCB coil of design method.
Provided by the present invention for the design method of the PCB coil of magnetic coupling resonance wireless power transmission systems, printer is used
Skill guarantees coil line footpath precision, the consistency of line spacing and the straight property of coiling；It excludes because of coil manufacturing technology precision problem
Caused by magnetic coupling resonator system efficiency of transmission reduction, experimental verification PCB coil is defeated to system relative to common coiling
Electric efficiency raising 5.3%.
Detailed description of the invention
Fig. 1 is the PCB coil design method stream provided in an embodiment of the present invention for magnetic coupling resonance wireless power transmission systems
Cheng Tu.
Fig. 2 is the PCB schematic diagram after provided in an embodiment of the present invention improve.
Fig. 3 is simplified model schematic diagram provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, the PCB coil design side provided in an embodiment of the present invention for magnetic coupling resonance wireless power transmission systems
Method includes:
S101: determining transmission power 1w, distance 0.2m and the resonance frequency 1.7MHz of magnetic coupling resonator system first, uses
MATLAB establishes the mathematical model of system, and selection uses planar spiral-type coil, according to distance 0.2m, the power of system requirements
The parameter of the calculating transmitting and receiving coil such as 1W, resonance frequency 1.7MHz；Using calculating the parameter of acquisition in Matlab in high frequency
The simplified model of system is established in simulation software ADS；
S102: the inductance value of the parameters post-simulation optimization coil such as setting input power, resonance frequency, distance, coil inductance,
The coefficient of coup between resonant capacitance value and transmitting and receiving coil；Determining can be according to formula optimization coil after the coefficient of coup
Radius and coil turn；
S103: establishing the mock-up of coil in the Layout environment of ADS, sets thickness, the medium system of PCB medium
Number, copper thickness, dielectric loss coefficient etc. continue to carry out simulation optimization to coil using the EM limited element analysis technique function in ADS, most
The parameter of PCB coil is determined eventually.
The specific steps of the present invention are as follows:
Transmission power 1w, distance 0.2m and the resonance frequency 1.7MHz for determining magnetic coupling resonator system first, use
MATLAB establishes the mathematical model of system, and selection uses planar spiral-type coil, according to distance 0.2m, the power of system requirements
1W, resonance frequency 1.7MHz etc. calculate the parameter of transmitting and receiving coil, and parameter includes coil inductance, coil line footpath, coil
The number of turns, coil-span, coil inner ring radius, coil outer ring radius.Such as the calculation formula of coil inductance are as follows:Wherein raCoil mean radius, c are coil beam overall, and N is the number of turns.Using being calculated in Matlab
The parameter of acquisition establishes the simplified model of system in Frequency Simulation Software ADS, as shown in Figure 3.
Set inductance value, the resonance of the parameters post-simulations such as input power, resonance frequency, distance, coil inductance optimization coil
The coefficient of coup between capacitance and transmitting and receiving coil.Determining can be according to formula optimization coil radius after the coefficient of coup
And coil turn, the mock-up of coil is then established in the Layout environment of ADS, sets thickness, the medium system of PCB medium
Number, copper thickness, dielectric loss coefficient etc. continue to carry out simulation optimization to coil using the EM limited element analysis technique function in ADS, most
Each parameter of PCB coil is determined eventually are as follows: inductance value L=14.11uH, turn number N=16, line footpath a=0.8mm, internal diameter R1=
17mm, outer diameter R2=38mm, copper sheet is with a thickness of 1oz.The coil former of ADS is imported into having carried out in AltiumDesigner
It is kind, the encapsulation such as capacitor, pad of needs is added, the PCB dielectric-slab boundary of coil is set.The PCB coil and calculating of actual fabrication
PCB coil parameter reached high consistency, and demonstrate PCB coil in the experiment of magnetic coupling resonance wireless power transmission
Good result, on the position of transmitting and receiving coil distance 0.22m obtain system power transmission efficiency be up to 86.4%, compared to
The coiling improved efficiency that is made in this experiment previous work 5.3%.So far obtain it is a kind of for magnetic coupling resonance without
The PCB coil of line transmission system.
Application effect of the invention is explained in detail below with reference to experiment.
1, system model is established using MATLAB, selection uses planar spiral-type coil, according to the distance of system requirements, function
Rate, resonance frequency etc. calculate the parameter of transmitting and receiving coil, and parameter includes coil inductance, coil line footpath, coil turn, line
Enclose spacing, coil inner ring radius, coil outer ring radius.
Wherein system transmission range is set to 0.2m, transmission power 1W, and resonance frequency is set to 1.7MHz.
Wherein, turn number N positioning 16, calculating coil line footpath by formula is 0.9mm, coil-span 0.3mm, in coil
Ring radius is 17.6mm, and coil outer ring radius is 38.9mm.
Wherein coil inductance is by formulaCalculate to obtain L=13.05uh.
2, three-dimensional modeling, simulation calculation, distributed inductance, distribution capacity and the line for optimizing coil are carried out to coil using ADS
Enclose resistance.
The parameter that final optimization pass obtains are as follows: inductance value L=14.11uH, turn number N=16, line footpath a=0.8mm, internal diameter
R1=17mm, outer diameter R2=38mm, copper sheet is with a thickness of 1oz.
3, using ALtium Designer circuit (PCB) design software, the PCB model of coil is drawn and improves, addition needs
The encapsulation such as capacitor, resistance, via hole, pad for wanting, is arranged the PCB dielectric-slab boundary of coil, and the PCB after improving is as shown in Fig. 2, throw
Plate production.
4, resonance wireless power transmission is magnetically coupled using the PCB coil designed and produced to test, in transmitting coil and receive line
Circle remote is 86.4% from system efficiency of transmission is obtained when being 1.7MHz for 0.22m, transmission power 1W, resonance frequency, compared to
The coiling improved efficiency that makes in this experiment previous work 5.3% preferably demonstrates effectiveness of the invention and just
True property.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (5)
1. a kind of design method of the PCB coil for magnetic coupling resonance wireless power transmission systems, which is characterized in that described to be used for magnetic
The design method of the PCB coil of coupled resonance wireless power transmission systems the following steps are included:
Step 1, it is first determined transmission power 1w, distance 0.2m and the resonance frequency 1.7MHz of magnetic coupling resonator system are used
MATLAB establishes the mathematical model of system, and selection uses planar spiral-type coil, according to distance 0.2m, the power of system requirements
The parameter of 1W, resonance frequency 1.7MHz calculating transmitting and receiving coil；It is imitative in high frequency using the parameter for calculating acquisition in Matlab
The simplified model of system is established in true software ADS；
Step 2, setting input power, resonance frequency, distance, the inductance value of coil inductance parameter post-simulation optimization coil, resonance
The coefficient of coup between capacitance and transmitting and receiving coil；Determining can be according to formula optimization coil radius after the coefficient of coup
And coil turn；
Step 3, establishes the mock-up of coil in the Layout environment of ADS, set the thickness of PCB medium, medium coefficient,
Copper thickness, dielectric loss coefficient continue to carry out coil simulation optimization using the EM limited element analysis technique function in ADS, final true
Determine the parameter of PCB coil.
2. the design method for the PCB coil of magnetic coupling resonance wireless power transmission systems, feature exist as described in claim 1
In the parameter includes coil inductance, coil line footpath, coil turn, coil-span, coil inner ring radius, coil outer ring radius.
3. the design method for the PCB coil of magnetic coupling resonance wireless power transmission systems, feature exist as claimed in claim 2
In the calculation formula of the coil inductance are as follows:Wherein raCoil mean radius, c are that coil is total
Width, N are the number of turns.
4. the design method for the PCB coil of magnetic coupling resonance wireless power transmission systems, feature exist as described in claim 1
In each parameter of the PCB coil are as follows: inductance value L=14.11uH, turn number N=16, line footpath a=0.8mm, internal diameter R1=
17mm, outer diameter R2=38mm, copper sheet is with a thickness of 1oz.
5. a kind of design as described in Claims 1 to 4 any one for the PCB coil of magnetic coupling resonance wireless power transmission systems
The PCB coil that method obtains.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107093929B (en) * | 2017-03-24 | 2021-10-22 | 哈尔滨工业大学深圳研究生院 | Coupling resonant underwater wireless charging device and method |
| CN108110903A (en) * | 2017-12-14 | 2018-06-01 | 中南大学 | A kind of gradually wide structural model and optimization method for gradually opening spiral PCB resonance coils |
| CN109067015B (en) * | 2018-09-26 | 2021-11-12 | 苏州法拉第能源科技有限公司 | Wireless power transmission method of self-adaptive variable receiving coil |
| CN109193964B (en) * | 2018-09-27 | 2020-04-07 | 杭州电子科技大学温州研究院有限公司 | Wireless power efficient transmission method based on PCB coil |
| CN111082542B (en) * | 2019-12-26 | 2023-04-18 | 重庆瑜欣平瑞电子股份有限公司 | Magnetic coupling resonance coil design method applying Simpson integration method |
| CN111931299B (en) * | 2020-06-02 | 2024-04-16 | 西安理工大学 | Optimal design method of planar spiral coil in magnetic coupling resonance wireless power transmission application |
| CN113746215B (en) * | 2021-07-31 | 2023-07-18 | 广西电网有限责任公司电力科学研究院 | Design method of high-power-density strong-offset-tolerance magnetic coupling mechanism |
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| CN103887896A (en) * | 2014-02-27 | 2014-06-25 | 杭州电子科技大学 | Method for designing wireless charging coil allowing charging device to be placed freely |
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