CN104600877A - Wireless power transmission device with sidesway adaptability and rotation adaptability - Google Patents
Wireless power transmission device with sidesway adaptability and rotation adaptability Download PDFInfo
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- CN104600877A CN104600877A CN201510079454.7A CN201510079454A CN104600877A CN 104600877 A CN104600877 A CN 104600877A CN 201510079454 A CN201510079454 A CN 201510079454A CN 104600877 A CN104600877 A CN 104600877A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
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Abstract
The invention discloses a wireless power transmission device with sidesway adaptability and rotation adaptability, belongs to the technical field of wireless power transmission and aims at solving the problem of low transmission performance caused by the fact that existing wireless power transmission technology is limited by position and angle of a receiving end. The wireless power transmission device comprises an energy transmitting device and multiple energy receiving devices, the energy transmitting device comprises a direct-current power source, a high-frequency power source, an energy excitation coil, an energy transmitting coil and a transmitting end resonant capacitor, each energy receiving device comprises an energy receiving coil, a receiving end resonant capacitor, a load coil and an energy processing circuit, each of the energy transmitting coil and the energy receiving coils comprises three planar coils, planes where spaces of the three planar coils are orthogonal pairwise, and alternating current working frequency generated by the high-frequency power source, inherent frequency of a transmitting end resonant cavity and inherent frequency of a receiving end resonant cavity are identical. The wireless power transmission device is used for energy supply of human body implanting equipment, portable mobile equipment and wireless sensor network nodes.
Description
Technical field
The invention belongs to wireless power transmission technical field.
Background technology
Wireless power transmission technology is a kind of new electric energy technology by non-physical media implementation delivery of electrical energy, and magnet coupled resonant type wireless electric energy transmission technology is proposed and device realization by experiment by the computer MSR Information system of MIT the earliest, successfully light the bulb of the 60W at two meters of simultaneously.This technology is subject to increasing scholar and payes attention to, and powers become possibility for realizing long-range middle low power equipment.
Wireless power transmission mode is generally divided into three kinds: the resonant wireless power transmission technology of electromagnetic wave type wireless power transmission, magnetic field induction wireless power transmission and magnetic coupling.For the third transmission means, existing magnet coupled resonant type wireless electric energy transmission technology to large between the transmitting terminal of transmission system and receiving terminal be main mainly with flat sided straight around formula coil, it requires harsher to the relative position between coil, and the change of the angle of receiving terminal self also can affect the laser propagation effect of electric energy, therefore becomes the obstacle of the further application of this technology.
Summary of the invention
The present invention seeks to be subject to the lower problem of the restriction transmission performances such as receiving terminal position angle to solve existing radio energy transmission technology, providing one and there is sidesway adaptability and rotate adaptive wireless electric energy transmission device.
One of the present invention has sidesway adaptability and rotates adaptive wireless electric energy transmission device, and it comprises energy emitting device and multiple energy acceptance device; Energy emitting device converts electrical energy into the variation magnetic field of high frequency, and then the magnetic field received in space is converted to electric energy by multiple energy acceptance device is load charging; Relative position between receiving terminal and transmitting terminal can freely change;
Described energy emitting device comprises DC power supply, high frequency electric source, energy-activation coil, energy transmitting coil and transmitting terminal resonant capacitance, DC power supply exports electric current to high frequency electric source, direct current is converted to the alternating current of high frequency regimes by high frequency electric source, then the alternating current of high frequency regimes is exported to energy-activation coil, energy-activation coil forms primary magnetic field in space, and provide the energy of field form for energy transmitting coil, energy transmitting coil and transmitting terminal resonant capacitance form transmitting terminal resonant cavity, resonance is there is under the excitation of primary magnetic field, produce the magnetic field energy being used for delivery of electrical energy,
Described energy transmitting coil comprises three plane formula coils, place, the space plane pairwise orthogonal of three plane formula coils;
Each energy acceptance device includes energy acceptance coil, receiving terminal resonant capacitance, loading coil and energy process circuit, energy acceptance coil and receiving terminal resonant capacitance form receiving terminal resonant cavity, receiving terminal resonant cavity produces resonance under the effect of magnetic field energy, resonant field is produced in energy acceptance coil, loading coil receives magnetic field energy with faradic form in resonant field, loading coil is connected with energy process circuit, magnetic field energy in loading coil is changed according to load by energy process circuit, realizes charging to load;
Described energy acceptance coil comprises three plane formula coils, place, the space plane pairwise orthogonal of three plane formula coils;
The operating frequency of alternating current that described high frequency electric source produces, the natural frequency of transmitting terminal resonant cavity are all identical with the natural frequency of receiving terminal resonant cavity.
Advantage of the present invention: one of the present invention has sidesway adaptability and rotates adaptive wireless electric energy transmission device, and the coupling coefficient solved in existing radio energy transmitting device when the relative position in receiving terminal space and self-view change and between magnetic field energy generating means diminishes the problem causing received energy to reduce.Transmitting coil of the present invention and receiving coil are that three spatially mutually orthogonal coil combination form, and have the non-directive of Three Degree Of Freedom.Transmitting coil can produce magnetic field space in three dimensions, ensures that receiving terminal can receive magnetic field energy in each position; Receiving terminal can in the arbitrarily angled middle effective reception realizing magnetic field.Utilize the receiving terminal of the wireless electric energy transmission device of this structure in larger locus, the stable transfer of electric energy can be realized for arbitrarily angled time, and realize powering to multiple power consumption equipment simultaneously.Complete the remote power feeding to portable and hand-hold type power consumption equipment further, be user-friendly to.The present invention is applicable to the Power supply of human body implanting device, portable mobile apparatus and wireless sensor network node.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation having sidesway adaptability and rotate adaptive wireless electric energy transmission device of the present invention;
Fig. 2 is three plane formula coil place planes is the structural representation of energy transmitting coil time circular simultaneously;
Fig. 3 to be three plane formula coil place planes be two circles and one square time energy transmitting coil structural representation;
Fig. 4 to be three plane formula coil place planes be two square and one circular time energy transmitting coil structural representation;
Fig. 5 is three plane formula coil place planes is the structural representation of energy transmitting coil time square simultaneously;
Fig. 6 adopts distributed capacitor between coil as a kind of structural representation of transmitting terminal resonant capacitance during resonant capacitance and receiving terminal resonant capacitance;
Fig. 7 adopts distributed capacitor between coil as the another kind of structural representation of transmitting terminal resonant capacitance during resonant capacitance and receiving terminal resonant capacitance;
Fig. 8 adopts centralized capacitor as a kind of structural representation of transmitting terminal resonant capacitance during resonant capacitance and receiving terminal resonant capacitance;
Fig. 9 adopts centralized capacitor as the another kind of structural representation of transmitting terminal resonant capacitance during resonant capacitance and receiving terminal resonant capacitance;
Figure 10 adopts centralized capacitor as the another kind of structural representation of transmitting terminal resonant capacitance during resonant capacitance and receiving terminal resonant capacitance.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1, one described in present embodiment has sidesway adaptability and rotates adaptive wireless electric energy transmission device, and it comprises energy emitting device and multiple energy acceptance device; Energy emitting device converts electrical energy into the variation magnetic field of high frequency, and the magnetic field received in space is converted to electric energy and then charges for load 10 by multiple energy acceptance device; Relative position between receiving terminal and transmitting terminal can freely change;
Described energy emitting device comprises DC power supply 1, high frequency electric source 2, energy-activation coil 3, energy transmitting coil 4 and transmitting terminal resonant capacitance 5, DC power supply 1 exports electric current to high frequency electric source 2, direct current is converted to the alternating current of high frequency regimes by high frequency electric source 2, then the alternating current of high frequency regimes is exported to energy-activation coil 3, energy-activation coil 3 forms primary magnetic field in space, and provide the energy of field form for energy transmitting coil 4, energy transmitting coil 4 and transmitting terminal resonant capacitance 5 form transmitting terminal resonant cavity, resonance is there is under the excitation of primary magnetic field, produce the magnetic field energy being used for delivery of electrical energy,
Described energy transmitting coil 4 comprises three plane formula coils, place, the space plane pairwise orthogonal of three plane formula coils;
Each energy acceptance device includes energy acceptance coil 6, receiving terminal resonant capacitance 7, loading coil 8 and energy process circuit 9, energy acceptance coil 6 and receiving terminal resonant capacitance 7 form receiving terminal resonant cavity, receiving terminal resonant cavity produces resonance under the effect of magnetic field energy, resonant field is produced in energy acceptance coil 6, loading coil 8 receives magnetic field energy with faradic form in resonant field, loading coil 8 is connected with energy process circuit 9, magnetic field energy in loading coil 8 is changed according to load 10 by energy process circuit 9, realize charging to load 10,
Described energy acceptance coil 6 comprises three plane formula coils, place, the space plane pairwise orthogonal of three plane formula coils;
The operating frequency of alternating current that described high frequency electric source 2 produces, the natural frequency of transmitting terminal resonant cavity are all identical with the natural frequency of receiving terminal resonant cavity.
In present embodiment, energy transmitting coil 4 and transmitting terminal resonant capacitance 5 form resonant cavity structure, consistent due to its natural frequency and alternating current and primary magnetic field, so there is resonance under the excitation of primary magnetic field, produce larger electric current and voltage, and create the transmission magnetic field for delivery of electrical energy.
In present embodiment, energy transmitting coil 4 comprises three plane formula coils, place, the space plane of three plane formula coils is mutually orthogonal between two, forms space magnetic field in three directions during work, can receive transmission magnetic field for the receiving terminal in the effective range of magnetic field.Relative position between receiving terminal and transmitting terminal can freely change.
In present embodiment, the high frequency electric source 2 in described energy emitting device can be connected with energy-activation coil 3, also can directly be connected with transmitting terminal resonant cavity.Energy process circuit 9 in energy acceptance device can be connected with loading coil 8, also can be connected with receiving terminal resonant cavity.
Embodiment two: present embodiment is described further execution mode one, three plane formula coils of described formation energy transmitting coil 4 or energy acceptance coil 6, all adopt series, parallel or the mixed mode connected to connect by tap between coil.
Embodiment three: present embodiment is described further execution mode one, described energy-activation coil 3 is spatially positioned at inside or the outside of energy transmitting coil 4, and loading coil 8 is spatially positioned at inside or the outside of energy acceptance coil 6.
Embodiment four: present embodiment is described below in conjunction with Fig. 6-Figure 10, present embodiment is described further execution mode one, transmitting terminal resonant capacitance 5 is identical with the structure of receiving terminal resonant capacitance 7, all adopts distributed capacitor between centralized capacitor or coil as resonant capacitance.
Embodiment five: present embodiment is described below in conjunction with Fig. 2, present embodiment is described further execution mode one, and described energy transmitting coil 4 is identical with the structure of energy acceptance coil 6, and three plane formula coils are all circular, and diameter is identical.
Embodiment six: present embodiment is described further execution mode one, described energy transmitting coil 4 is identical with the structure of energy acceptance coil 6, and three plane formula coils adopt identical three ellipses.
Embodiment seven: present embodiment is described below in conjunction with Fig. 5, present embodiment is described further execution mode one, described energy transmitting coil 4 is identical with the structure of energy acceptance coil 6, and three plane formula coils are all square, and the length of side is equal.
Embodiment eight: present embodiment is described below in conjunction with Fig. 3 and Fig. 4, present embodiment is described further execution mode one, described energy transmitting coil 4 is identical with the structure of energy acceptance coil 6, three plane formula coils are square and circular combination, and the length of side of square and circular equal diameters.
In present embodiment, plane formula coil comprises circle, square, oval and rhombus.Three plane formula coils can be circular simultaneously, and can be two circle one sides, can be two Fang Yiyuan, can be square simultaneously, also can make other shapes and any combination each other thereof.
Operation principle of the present invention: energy emitting device comprises DC power supply 1, high frequency electric source 2, energy-activation coil 3, energy transmitting coil 4 and transmitting terminal resonant capacitance 5.
DC power supply 1 is electrically connected with city, DC power output, or is directly provided by battery.Direct current is connected with high frequency electric source 2, is high-frequency ac electric energy by DC conversion.Energy-activation coil 3 is formed by multiply or single strand wire coiling, and two taps of energy-activation coil 3 are connected with high-frequency ac power.
Energy transmitting coil 4 is placed within the scope of the effective magnetic field of energy-activation coil 3, or energy-activation coil 3 is placed in energy transmitting coil 4 inside.Energy transmitting coil 4 is that three coil combination form.
In three coils, the strand cross-sectional of each coil amasss the area surrounded much smaller than coil, namely
s×n＜＜S
Wherein s is the wire diameter sectional area of sub-thread coil, and n is coil turn, the area that S surrounds for coil.
If coil is circular, then:
s×n＜
＜πR
2
Wherein R is surrounded circular coil radius.
If coil is square, then:
s×n＜＜D
2
Wherein D is the surrounded square length of side.
In three coils of described composition energy transmitting coil 4, shape can be different, are circular type, square, oval or rectangular various combination.Coil place flat transverse size is identical with longitudinal size, ensures that coil can be effectively crossing when space is combined mutually.Such as, when square coil and circular coil combine mutually, the square coil length of side equals circular coil diameter.The place plane being perpendicular of one of them coil place plane and another coil, and intersecting lens is the symmetry axis of two coils simultaneously.The place plane of the 3rd coil simultaneously with the first and second coil place plane orthogonal, and vertical intersection is lateral symmetry axle and longitudinal symmetry axis (as Fig. 2-Fig. 5) of the 3rd coil place planar graph.
Single coil tap place is responsible for being connected with other coils, can be combined between three coils mutually combined by the mode of series, parallel and series-parallel connection.If to utilize between coil distributed capacitance as the resonant capacitance of transmitting coil, three the coil connected modes then forming transmitting coil have series system or parallel way (as Fig. 6-Fig. 7), if utilize resonant capacitor as the resonant capacitance of transmitting coil electric capacity, connected mode then between three coils has the form such as series, parallel and series-parallel connection, and draws the splicing ear (Fig. 8-Figure 10) be connected with resonant capacitor.Splicing ear is directly connected with resonant capacitance.The natural frequency of the resonant cavity that transmitting terminal coil and electric capacity are formed is:
L
launchbe the equivalent total inductance of the transmitting coil of three coil combination, C
launchfor the resonant capacitance of coupling or the capacitance of distributed capacitance.
Described energy acceptance coil 6 is formed by three coil combination equally, its compound mode and electric capacity method of attachment and transmitting terminal transmitting coil similar.Receiving coil size can be less than transmitting coil size.The natural frequency of the resonant cavity that receiving coil and capacitor or self distributed capacitance are formed is:
L
receivefor the equivalent total inductance of the receiving coil of receiving terminal three coil combination, C
receivefor the resonant capacitance of coupling or the capacitance of distributed capacitance.Wherein f
launch=f
receive, and the high-frequency ac power of electric energy transmitting terminal is consistent with the natural frequency receiving resonant cavity with transmission cavity body.
Loading coil is formed by sub-thread or strand wire coiling, is placed within the scope of the effective magnetic field of receiving coil, spatially can be placed in that receiving coil is outside or receiving coil is inner.Two taps of loading coil are connected with the input of electric energy treatment circuit.It is the energy that can receive by electric loading that electric energy treatment circuit is responsible for the electric energy conversion of the form of communication at loading coil two ends, and its output is connected with the input of electric loading.
Claims (8)
1. have sidesway adaptability and rotate an adaptive wireless electric energy transmission device, it is characterized in that, it comprises energy emitting device and multiple energy acceptance device; Energy emitting device converts electrical energy into the variation magnetic field of high frequency, and then the magnetic field received in space is converted to electric energy by multiple energy acceptance device is load (10) charging; Relative position between receiving terminal and transmitting terminal can freely change;
Described energy emitting device comprises DC power supply (1), high frequency electric source (2), energy-activation coil (3), energy transmitting coil (4) and transmitting terminal resonant capacitance (5), electric current is exported to high frequency electric source (2) by DC power supply (1), direct current is converted to the alternating current of high frequency regimes by high frequency electric source (2), then the alternating current of high frequency regimes is exported to energy-activation coil (3), energy-activation coil (3) forms primary magnetic field in space, and be the energy that energy transmitting coil (4) provides field form, energy transmitting coil (4) and transmitting terminal resonant capacitance (5) form transmitting terminal resonant cavity, resonance is there is under the excitation of primary magnetic field, produce the magnetic field energy being used for delivery of electrical energy,
Described energy transmitting coil (4) comprises three plane formula coils, place, the space plane pairwise orthogonal of three plane formula coils;
Each energy acceptance device includes energy acceptance coil (6), receiving terminal resonant capacitance (7), loading coil (8) and energy process circuit (9), energy acceptance coil (6) and receiving terminal resonant capacitance (7) form receiving terminal resonant cavity, receiving terminal resonant cavity produces resonance under the effect of magnetic field energy, resonant field is produced in energy acceptance coil (6), loading coil (8) receives magnetic field energy with faradic form in resonant field, loading coil (8) is connected with energy process circuit (9), magnetic field energy in loading coil (8) is changed according to load (10) by energy process circuit (9), realize charging to load (10),
Described energy acceptance coil (6) comprises three plane formula coils, place, the space plane pairwise orthogonal of three plane formula coils;
The operating frequency of the alternating current that described high frequency electric source (2) produces, the natural frequency of transmitting terminal resonant cavity are all identical with the natural frequency of receiving terminal resonant cavity.
2. one according to claim 1 has sidesway adaptability and rotates adaptive wireless electric energy transmission device, it is characterized in that, three plane formula coils of described formation energy transmitting coil (4) or energy acceptance coil (6), all adopt series, parallel or the mixed mode connected to connect by tap between coil.
3. one according to claim 1 has sidesway adaptability and rotates adaptive wireless electric energy transmission device, it is characterized in that, described energy-activation coil (3) is spatially positioned at inside or the outside of energy transmitting coil (4), and loading coil (8) is spatially positioned at inside or the outside of energy acceptance coil (6).
4. one according to claim 1 has sidesway adaptability and rotates adaptive wireless electric energy transmission device, it is characterized in that, transmitting terminal resonant capacitance (5) is identical with the structure of receiving terminal resonant capacitance (7), all adopts distributed capacitor between centralized capacitor or coil as resonant capacitance.
5. one according to claim 1 has sidesway adaptability and rotates adaptive wireless electric energy transmission device, it is characterized in that, described energy transmitting coil (4) is identical with the structure of energy acceptance coil (6), three plane formula coils are all circular, and diameter is identical.
6. one according to claim 1 has sidesway adaptability and rotates adaptive wireless electric energy transmission device, it is characterized in that, described energy transmitting coil (4) is identical with the structure of energy acceptance coil (6), and three plane formula coils adopt identical three ellipses.
7. one according to claim 1 has sidesway adaptability and rotates adaptive wireless electric energy transmission device, it is characterized in that, described energy transmitting coil (4) is identical with the structure of energy acceptance coil (6), three plane formula coils are all square, and the length of side is equal.
8. one according to claim 1 has sidesway adaptability and rotates adaptive wireless electric energy transmission device, it is characterized in that, described energy transmitting coil (4) is identical with the structure of energy acceptance coil (6), three plane formula coils are square and circular combination, and the length of side of square and circular equal diameters.
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| CN105634151A (en) * | 2016-03-29 | 2016-06-01 | 中惠创智无线供电技术有限公司 | Resonant coil coupled 3D spherical model |
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| CN108721720A (en) * | 2018-05-30 | 2018-11-02 | 哈尔滨工业大学 | Implantable cardiac based on wireless power transmission assists blood supply device |
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| CN109004768A (en) * | 2018-06-26 | 2018-12-14 | 华为技术有限公司 | A kind of device and method of wireless charging |
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| CN111817450A (en) * | 2020-08-27 | 2020-10-23 | 鹏城实验室 | Underwater communication power supply system based on magnetic communication |
| CN113315257A (en) * | 2021-06-04 | 2021-08-27 | 西南交通大学 | Rotary wireless power supply device suitable for tire pressure sensor |
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| CN105634151A (en) * | 2016-03-29 | 2016-06-01 | 中惠创智无线供电技术有限公司 | Resonant coil coupled 3D spherical model |
| CN105896743A (en) * | 2016-04-19 | 2016-08-24 | 中南大学 | Wireless power transmission system and method |
| CN106026417A (en) * | 2016-05-25 | 2016-10-12 | 重庆大学 | Multiphase excitation-total space pickup wireless energy transfer system and control method therefor |
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| CN106935388A (en) * | 2017-02-23 | 2017-07-07 | 福州大学 | A kind of Multiple coil magnetic coupling receiving coil structure |
| CN106935388B (en) * | 2017-02-23 | 2018-07-20 | 福州大学 | A kind of Multiple coil magnetic coupling receiving coil structure |
| CN107086619A (en) * | 2017-04-28 | 2017-08-22 | 昆明理工大学 | A kind of wireless charging ball |
| CN108092417A (en) * | 2017-12-25 | 2018-05-29 | 珠海格力电器股份有限公司 | Wireless charging device and control method thereof |
| CN108721720A (en) * | 2018-05-30 | 2018-11-02 | 哈尔滨工业大学 | Implantable cardiac based on wireless power transmission assists blood supply device |
| CN108721720B (en) * | 2018-05-30 | 2021-03-30 | 哈尔滨工业大学 | Implantable heart auxiliary blood supply device based on wireless power transmission |
| CN109004768A (en) * | 2018-06-26 | 2018-12-14 | 华为技术有限公司 | A kind of device and method of wireless charging |
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| CN109001615B (en) * | 2018-07-23 | 2021-07-06 | 清华大学 | Automatic test system for active implantation type medical instrument detection |
| WO2020051909A1 (en) * | 2018-09-14 | 2020-03-19 | 哈尔滨工业大学（深圳） | Underwater charging and communication integration apparatus, and underwater wireless charging apparatus |
| CN109450115A (en) * | 2018-12-29 | 2019-03-08 | 深圳蔚蓝无限科技有限公司 | The transmitting terminal of radio energy emitter and wireless charging |
| CN109617265A (en) * | 2018-12-29 | 2019-04-12 | 深圳蔚蓝无限科技有限公司 | Radio energy emitter and its control method, computer readable storage medium |
| CN109617265B (en) * | 2018-12-29 | 2021-08-10 | 深圳纳弘熠岦光学科技有限公司 | Wireless power transmitting apparatus, method of controlling the same, and computer-readable storage medium |
| CN109756032A (en) * | 2019-03-20 | 2019-05-14 | 河北科技大学 | spherical wireless charging system |
| CN110635580A (en) * | 2019-11-13 | 2019-12-31 | 西安工程大学 | Multi-degree-of-freedom wireless power transmission device and preparation method thereof |
| CN111817450A (en) * | 2020-08-27 | 2020-10-23 | 鹏城实验室 | Underwater communication power supply system based on magnetic communication |
| CN113315257A (en) * | 2021-06-04 | 2021-08-27 | 西南交通大学 | Rotary wireless power supply device suitable for tire pressure sensor |
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