CN107749675A - Radio energy transmission system based on magnetic resonance coupling - Google Patents

Radio energy transmission system based on magnetic resonance coupling Download PDF

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Publication number
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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CN
China
Prior art keywords
coil
magnetic
electric energy
transmission
main coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711016765.4A
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Chinese (zh)
Inventor
张立炎
龙汉平
钱杭
刘佳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Guangrui Lian Technology Co., Ltd.
Original Assignee
Wuhan Hui Chi Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan Hui Chi Technology Co Ltd filed Critical Wuhan Hui Chi Technology Co Ltd
Priority to CN201711016765.4A priority Critical patent/CN107749675A/en
Publication of CN107749675A publication Critical patent/CN107749675A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/022Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters characterised by the type of converter
    • H02J7/025Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters characterised by the type of converter using non-contact coupling, e.g. inductive, capacitive

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

Radio energy transmission system based on magnetic resonance coupling
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)

  1. 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. 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. 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. 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. 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. 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.
CN201711016765.4A 2017-10-26 2017-10-26 Radio energy transmission system based on magnetic resonance coupling Pending CN107749675A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201711016765.4A CN107749675A (en) 2017-10-26 2017-10-26 Radio energy transmission system based on magnetic resonance coupling

Publications (1)

Publication Number Publication Date
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Cited By (2)

* Cited by examiner, † Cited by third party
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
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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103534772A (en) * 2011-05-19 2014-01-22 索尼公司 Power supply device, power supply system, and electronic device
CN104124764A (en) * 2013-04-27 2014-10-29 海尔集团技术研发中心 Wireless power transmission receiving end, system and receiving method
EP2824678A1 (en) * 2012-02-20 2015-01-14 Lequio Power Technology Corp. Power supply device, power reception device, and power supply/reception device
CN104335452A (en) * 2012-05-14 2015-02-04 Lg电子株式会社 Wireless power transfer device and wireless charging system having same
CN104838455A (en) * 2012-10-04 2015-08-12 Lg伊诺特有限公司 Electromagnetic booster for wireless charging and method of manufacturing the same
US20160027577A1 (en) * 2012-03-20 2016-01-28 Qualcomm Incorporated Magnetically permeable structures

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103534772A (en) * 2011-05-19 2014-01-22 索尼公司 Power supply device, power supply system, and electronic device
EP2824678A1 (en) * 2012-02-20 2015-01-14 Lequio Power Technology Corp. Power supply device, power reception device, and power supply/reception device
US20160027577A1 (en) * 2012-03-20 2016-01-28 Qualcomm Incorporated Magnetically permeable structures
CN104335452A (en) * 2012-05-14 2015-02-04 Lg电子株式会社 Wireless power transfer device and wireless charging system having same
CN104838455A (en) * 2012-10-04 2015-08-12 Lg伊诺特有限公司 Electromagnetic booster for wireless charging and method of manufacturing the same
CN104124764A (en) * 2013-04-27 2014-10-29 海尔集团技术研发中心 Wireless power transmission receiving end, system and receiving method

Cited By (4)

* Cited by examiner, † Cited by third party
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
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.

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.

TA01 Transfer of patent application right
RJ01 Rejection of invention patent application after publication

Application publication date: 20180302

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