CN107749675A - Radio energy transmission system based on magnetic resonance coupling - Google Patents
Radio energy transmission system based on magnetic resonance coupling Download PDFInfo
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- CN107749675A CN107749675A CN201711016765.4A CN201711016765A CN107749675A CN 107749675 A CN107749675 A CN 107749675A CN 201711016765 A CN201711016765 A CN 201711016765A CN 107749675 A CN107749675 A CN 107749675A
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 76
- 230000005540 biological transmission Effects 0.000 title claims abstract description 42
- 230000008878 coupling Effects 0.000 title claims abstract description 26
- 238000010168 coupling process Methods 0.000 title claims abstract description 26
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 26
- 230000005672 electromagnetic field Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 6
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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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- H02J7/025—
Abstract
The present invention relates to the loop construction of radio energy transmission system, in particular to a kind of radio energy transmission system based on magnetic resonance coupling.The structural core is uniform in the Distribution of Magnetic Field of electric energy receiving terminal, and ancillary coil can also receive the magnetic field that a part is scattered in main coil surrounding, can not only so reduce loss, and can suppress the hot-spot of magnetic core.In the structure of whole radio energy transmission system, loss caused by coupling coil portions accounts for a very big part of whole system.The loop construction can be largely reduction loss, reach improve radio energy efficiency of transmission.
Description
Technical field
The present invention relates to a kind of radio energy transmission system on magnetic resonance for being distributed field homogeneity, belong to radio
Can transmission field.
Background technology
Widely used with the development and new energy of Power Electronic Technique, electric automobile is as a kind of vapour of Novel pollution-free
Car has obtained widely available.But the cell power density of electric automobile is small and its charging interval long problem but governs it and enters one
The development and popularization of step.A kind of the use of relatively broad charging modes is at present the wired charging method based on direct-current charging post,
These electric wires not only limit the chargeable range of automobile, and limit the convenience that automobile uses, and then also generate safety
The hidden danger of electricity consumption.So wireless charging technology has begun to receive much concern in electric automobile field.
Wireless energy transfer pattern and mechanism are broadly divided into three kinds of magnetic induction coupling, electromagnetic radiation and magnetic coupling resonance sides
Formula.Magnetic coupling resonance manner is compared with electromagnetic radiation all has advantage in security and efficiency of transmission；With the magnetic induction side of coupling
Formula is compared, and it has advantage in transmission range.The current published wireless power transmission system based on magnetic coupling resonance manner
The transmitting terminal and receiving terminal of system use single resonance coil structure, are coupled by the same frequency magnetic resonance between the resonance coil of sending and receiving end
To realize the transmission of electric energy；This loop construction can cause receiving terminal Distribution of Magnetic Field uneven, easily cause magnetic core hot-spot,
Loss can also increase, and efficiency can decline.And such design requires also higher to the putting position of coil, i.e., transmitting terminal and
Receiving terminal will correspond within the specific limits.
The content of the invention
Propose one kind it is an object of the invention to overcome above-mentioned the deficiencies in the prior art and be based on field homogeneity distributing line
The radio energy transmission system of the magnetic resonance coupling of coil structures, the system, which can solve the problem that, is currently based on magnetic resonance coupling radio energy
Receiving terminal Distribution of Magnetic Field problem of non-uniform caused by Transmission system center line coil structures, and master can be received by ancillary coil
The leakage field of coil surrounding magnetic field, solve the problems, such as that wireless power transmission efficiency is low.
Realize the technical scheme is that a kind of radio energy transmission system based on magnetic resonance coupling, the system bag
Include：
Electric energy sending module, including primary coil, the primary coil are helical structure, and rounded in plane, and
The lower section for being close to primary coil is provided with equally distributed a number of magnetic stripe；
Electric energy receiving module, including main coil and ancillary coil, the main coil are helical structure, and in plane in circle
Shape, the primary side circle of face electric energy sending module, and it is provided with equally distributed and and sending module in the top for being close to main coil
In identical quantity magnetic stripe；The ancillary coil is helical structure, and is square in plane, and ancillary coil is evenly distributed on main line
The surrounding of circle, and ancillary coil is on same plane position with the magnetic stripe above the main coil
The electric energy sending module couples with electric energy receiving module.
In the above-mentioned technical solutions, equally distributed 8 magnetic stripes are provided with below the primary coil, the length of magnetic stripe is more than
The coil width of primary coil；Equally distributed 8 magnetic stripes also are provided with above the main coil, the length of magnetic stripe is more than main coil
Width.
In the above-mentioned technical solutions, the primary coil and the width of electric energy receiving module and main coil of the electric energy sending module
Spend for 60~80mm；Magnetic stripe length is 1.5~2 times of primary coil width in the electric energy sending module, width is 30~
35mm, 4~6mm of thickness；Magnetic stripe length is 1.5~2 times of main coil width in the receiving module, and width is 30~35mm,
4~6mm of thickness.
Further, the radio energy transmission system based on magnetic resonance coupling also includes：
Power network；
Rectification circuit, for being direct current by the AC rectification of the power network；
BUCK circuits, for carrying out DC-DC conversion to the direct current after the rectification；
Inverter circuit, the direct current for converting to obtain the DC-DC are converted to required alternating current；
Primary side resonance circuit, it is connected with the primary coil in the electric energy sending module, for producing a fixed frequency
Electromagnetic field, be convenient for the transmission of electric energy.
Further, the radio energy transmission system based on magnetic resonance coupling also includes：
Secondary resonance circuit, it is connected with the secondary main coil and Shunt compensation capacitor, for by electric energy sending module
Caused electromagnetic field is converted into the alternating current of fixed frequency, realizes the transmission of electric energy.
Secondary side rectification circuit, it is connected with the secondary resonance circuit, after direct current is battery powered by AC rectification for being.
Further, the radio energy transmission system based on magnetic resonance coupling also includes：
Secondary auxiliary resonance circuit, is connected with the ancillary coil, for by electromagnetic field caused by electric energy sending module
The alternating current of fixed frequency is converted into, realizes the transmission of electric energy；
Secondary auxiliary rectifier circuit, it is connected with the secondary auxiliary resonance circuit, for being to be after direct current by AC rectification
Intermediate battery supply.
The core of wireless power transmission (WPT) system of the present invention is that the Distribution of Magnetic Field of electric energy receiving terminal is uniform, boost line
Circle can also receive a part and be scattered in the magnetic field of primary side main coil surrounding, can not only so reduce loss, and can be with
Suppress the hot-spot of magnetic core.In the structure of whole radio energy transmission system, loss caused by coupling coil portions accounts for
One very big part of whole system.The loop construction can be largely reduction loss, reach raising radio energy
Efficiency of transmission.
Brief description of the drawings
Fig. 1 is the structured flowchart of radio energy transmission system of the present invention based on magnetic resonance coupling.
Fig. 2 is electric energy sending module schematic diagram in radio energy transmission system of the present invention.
Fig. 3 is schematic diagram in electric energy receiving module in radio energy transmission system of the present invention.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, radio energy transmission system of the present invention based on magnetic resonance coupling includes：Power network 301, rectification circuit
302nd, BUCK circuits, inverter circuit 304, primary side resonance circuit 305, primary coil 306, secondary main coil 307, secondary main coil
Resonance circuit 308, secondary main coil rectification circuit 309, secondary ancillary coil 310, secondary ancillary coil resonance circuit 311, pair
Side ancillary coil rectification circuit 312 and auxiliary battery module 313, battery module 314.
The core of radio energy transmission system of the present invention is also to include electric energy sending module (primary side), electric energy sending module
Structure as shown in Fig. 2 including：Main coil 101 and magnetic core 102, are illustrated separately below.
Main coil 101 is helical structure, and rounded in plane, the external resonance circuit 305 of main coil 101, coil width
Between 60~80mm.The whole coil structure primary coil 306 and secondary main coil that main coil 101 and magnetic core 102 are formed
201st, the whole coil structure 307 and 310 that secondary ancillary coil 202 and magnetic core 203 are formed is coupled.
Magnetic core 102 includes 8 cuboid magnetic stripes, and circumferentially arrangement is evenly distributed on the top of electric energy transmit coil 101, magnetic stripe
Length is 1.5~2 times, 30~35mm of width, thickness 5mm or so of the main width of coil 101.
The core of radio energy transmission system of the present invention is also to include electric energy receiving module (secondary), as shown in figure 3, electric
Energy receiving module includes：Main coil 201, ancillary coil 202 and magnetic core 203, are illustrated separately below.
Main coil 201 is helical structure, and in rounded shape in plane, and main coil 201 is outer successively as secondary main coil 307
It is connected after connecing resonance circuit 308, rectification circuit 309 with battery.The coil width of main coil 201 is between 60~80mm.Main line
The overall wire that the whole coil structure that circle 201, ancillary coil 202 and magnetic core 203 are formed is formed with main coil 101 and magnetic core 102
Coil structures primary coil 306 is coupled.
Ancillary coil 202 is helical structure, and square-shaped in plane, external diameter 25mm of the coil of ancillary coil 202 or so,
Width 8mm or so, ancillary coil 202 form electric energy receiving coil together with main coil 201.Ancillary coil 202 is external humorous successively
Shake circuit 311, rectification circuit 312 and boosting battery 313.
Magnetic core 203 includes 8 cuboid magnetic stripes, and circumferentially arrangement is evenly distributed on the lower section of electric energy transmit coil 201, magnetic stripe
203 length is 1.5~2 times, 30~35mm of width, thickness 5mm or so of the main width of coil 201.Magnetic stripe 203 and ancillary coil
202 are in same level.
The course of work of radio energy transmission system of the present invention based on magnetic resonance coupling is as follows：
Three-phase alternating current in power network 301 is obtained list by electric energy sending module by the electric current of rectified three-phase circuit 302 first
The direct current of phase, the direct current is then subjected to decompression by BUCK circuits 303 again and handles the electricity of the single-phase DC after being depressured,
Obtained direct current is obtained into single-phase alternating current by inverter circuit 304 again, finally passes through resonance circuit 305 and primary side main line again
Circle 306 obtains the alternating magnetic field of certain frequency, is so achieved that conversion of the electric energy to magnetic energy.
Electric energy receiving module by secondary main coil 307 and ancillary coil 310 and respective resonance circuit, is realized first
Magnetic coupling resonance, magnetic field energy caused by primary coil 306 can be converted into electric energy, finally being obtained again by rectification circuit can
Charge the battery required direct current.
Secondary ancillary coil 310 in electric energy receiving module mainly will be not secondary caused by primary side main coil 306
The part leakage magnetic flux that side main coil 307 utilizes, the direct current for being capable of boosting battery charging is converted thereof into by harmonic technology,
The voltage of the direct current is generally smaller, is adapted to give charging voltage less battery charging.
The loop construction can not only realize the high efficiency conversion between electric energy and magnetic field energy, and pass through ancillary coil pair
Leakage field is used, while also make it that the Distribution of Magnetic Field on magnetic stripe is more uniform, and magnetic stripe is not in local mistake at work
The situation of heat.In addition the topological structure of this circuit can also realize Sofe Switch truly.Through experiment test, institute of the present invention
It is more efficient with the radio energy transmission system under loop construction, more than 96% can be reached.
Claims (6)
- A kind of 1. radio energy transmission system based on magnetic resonance coupling, it is characterised in that including：Electric energy sending module, including primary coil, the primary coil are helical structure, and rounded in plane, and adjacent The lower section for primary coil is provided with equally distributed a number of magnetic stripe；Electric energy receiving module, including main coil and ancillary coil, the main coil are helical structure, and rounded in plane, just Number equally distributed and identical with sending module is provided with to the primary coil of receiving module, and in the top for being close to main coil The magnetic stripe of amount；The ancillary coil is helical structure, and is square in plane, and ancillary coil is evenly distributed on the four of main coil Week, and ancillary coil is on same plane position with the magnetic stripe above the main coil；The electric energy sending module couples with electric energy receiving module, and distance is 15-25cm.
- 2. the radio energy transmission system according to claim 1 based on magnetic resonance coupling, it is characterised in that：The primary side line Circle lower section is provided with equally distributed 8 magnetic stripes, and the length of magnetic stripe is more than the coil width of primary coil；Above the main coil Provided with equally distributed 8 magnetic stripes, the length of magnetic stripe is more than the width of main coil.
- 3. the radio energy transmission system according to claim 2 based on magnetic resonance coupling, it is characterised in that the electric energy The primary coil and the width of electric energy receiving module and main coil of sending module are 60~80mm；Magnetic in the electric energy sending module Bar length is 1.5~2 times of main coil width, and width is 30~35mm, 4~6mm of thickness；Magnetic stripe length in the receiving module For 1.5~2 times of main coil width, width is 30~35mm, 4~6mm of thickness.
- 4. the radio energy transmission system based on magnetic resonance coupling according to any one of claims 1 to 3, it is characterised in that Also include：Power network；Rectification circuit, for being direct current by the AC rectification of the power network；BUCK circuits, for carrying out DC-DC conversion to the direct current after the rectification；Inverter circuit, the direct current for converting to obtain the DC-DC are converted to required alternating current；Primary side resonance circuit, it is connected with the primary coil in the electric energy sending module, for producing the electricity of a fixed frequency Magnetic field, it is convenient for the transmission of electric energy.
- 5. the radio energy transmission system according to claim 4 based on magnetic resonance coupling, it is characterised in that also include：Secondary resonance circuit, it is connected with the secondary main coil and Shunt compensation capacitor, for electric energy sending module to be produced Raw electromagnetic field is converted into the alternating current of fixed frequency, realizes the transmission of electric energy.Secondary side rectification circuit, it is connected with the secondary resonance circuit, after direct current is battery powered by AC rectification for being.
- 6. the radio energy transmission system according to claim 5 based on magnetic resonance coupling, it is characterised in that also include：Secondary auxiliary resonance circuit, is connected with the ancillary coil, for electromagnetic field caused by electric energy sending module to be changed Into the alternating current of fixed frequency, the transmission of electric energy is realized；Secondary auxiliary rectifier circuit, it is connected with the secondary auxiliary resonance circuit, after direct current is auxiliary by AC rectification for being Battery powered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711016765.4A CN107749675A (en) | 2017-10-26 | 2017-10-26 | Radio energy transmission system based on magnetic resonance coupling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711016765.4A CN107749675A (en) | 2017-10-26 | 2017-10-26 | Radio energy transmission system based on magnetic resonance coupling |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592781A (en) * | 2018-05-14 | 2018-09-28 | 同济大学 | A kind of motor rotor position detection method and detection device |
| CN109347215A (en) * | 2018-12-05 | 2019-02-15 | 保定天威保变电气股份有限公司 | A kind of UI type electromagnetic coil structure and biography energy method for high-power long distance radio energy-transmitting |
| CN109823204A (en) * | 2019-03-07 | 2019-05-31 | 江苏智绿充电科技有限公司 | A kind of electric car wireless charging wisdom interactive system and its application method |
| CN110098667A (en) * | 2019-06-04 | 2019-08-06 | 安徽工程大学 | A kind of wireless charging system based on magnetic structure |
| CN110260507A (en) * | 2019-06-26 | 2019-09-20 | 重庆大学 | A kind of high power quasi-resonance electromagnet induction heat water-bound and its control method |
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| US20160027577A1 (en) * | 2012-03-20 | 2016-01-28 | Qualcomm Incorporated | Magnetically permeable structures |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592781A (en) * | 2018-05-14 | 2018-09-28 | 同济大学 | A kind of motor rotor position detection method and detection device |
| CN108592781B (en) * | 2018-05-14 | 2021-05-11 | 同济大学 | Motor rotor position detection method and detection device |
| CN109347215A (en) * | 2018-12-05 | 2019-02-15 | 保定天威保变电气股份有限公司 | A kind of UI type electromagnetic coil structure and biography energy method for high-power long distance radio energy-transmitting |
| CN109823204A (en) * | 2019-03-07 | 2019-05-31 | 江苏智绿充电科技有限公司 | A kind of electric car wireless charging wisdom interactive system and its application method |
| CN110098667A (en) * | 2019-06-04 | 2019-08-06 | 安徽工程大学 | A kind of wireless charging system based on magnetic structure |
| CN110260507A (en) * | 2019-06-26 | 2019-09-20 | 重庆大学 | A kind of high power quasi-resonance electromagnet induction heat water-bound and its control method |
| CN110260507B (en) * | 2019-06-26 | 2020-12-25 | 重庆大学 | High-power quasi-resonant electromagnetic induction hot water structure and control method thereof |
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Effective date of registration: 20190909 Address after: 430078 High-tech Avenue 999, Donghu New Technology Development Zone, Wuhan City, Hubei Province Applicant after: Wuhan Guangrui Lian Technology Co., Ltd. Address before: 430056 Hubei city of Wuhan province Kuanshan East Lake Development Zone Industrial Park Avenue, the Wuhan Polytechnic University research base of 1 building 103 room Applicant before: Wuhan Hui Chi Technology Co., Ltd. |
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Application publication date: 20180302 |