WO2019210503A1 - Système de charge sans fil apte à obtenir un effet d'entonnoir d'énergie et son procédé de charge sans fil - Google Patents

Système de charge sans fil apte à obtenir un effet d'entonnoir d'énergie et son procédé de charge sans fil Download PDF

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Publication number
WO2019210503A1
WO2019210503A1 PCT/CN2018/085569 CN2018085569W WO2019210503A1 WO 2019210503 A1 WO2019210503 A1 WO 2019210503A1 CN 2018085569 W CN2018085569 W CN 2018085569W WO 2019210503 A1 WO2019210503 A1 WO 2019210503A1
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WO
WIPO (PCT)
Prior art keywords
wireless
coil
magnetic resonance
wireless charging
charging system
Prior art date
Application number
PCT/CN2018/085569
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English (en)
Chinese (zh)
Inventor
李云辉
江俊
吕渴强
刘羽
王宇倩
卢杰
陈宇光
张冶文
陈鸿
Original Assignee
同济大学
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Publication date
Application filed by 同济大学 filed Critical 同济大学
Priority to PCT/CN2018/085569 priority Critical patent/WO2019210503A1/fr
Publication of WO2019210503A1 publication Critical patent/WO2019210503A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • 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
    • 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
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to the field of radio energy transmission technologies, and in particular to a wireless charging system and a wireless charging method thereof, and more particularly to a wireless charging system capable of realizing an energy funnel effect between a transmitting coil and a receiving coil and a wireless charging method thereof.
  • Wireless charging means that electrical equipment in a certain space can be realized without using a charging line. Charging; compared with traditional wired charging, wireless charging is small in size, high in portability, and compatible, and it is also beneficial to waterproof and dustproof design of electrical equipment such as mobile phones.
  • the existing technologies of wireless charging mainly include magnetic induction wireless charging and magnetic resonance wireless charging.
  • the principle of magnetic induction wireless charging is to use the principle of electromagnetic induction, similar to a transformer, there is a coil at the transmitting end and the receiving end, the primary coil is connected to a certain frequency of alternating current, and due to electromagnetic induction, a certain current is generated in the secondary coil, Thereby transferring energy from the transmission end to the receiving end; however, the magnetic induction wireless charging requires that the receiving coil and the transmitting coil must be aligned, and the gap between the transmitting coil and the receiving coil must not exceed 5 mm, and only then, the current generated on the transmitting coil is generated. It is only possible for the magnetic induction line to pass through the receiving coil to achieve an increase in energy transmission efficiency; thus, the inconvenience that the electrical equipment must accurately position the placement greatly reduces the customer experience.
  • magnetic resonance wireless charging also known as near-field resonance
  • two devices When two devices are adjusted to the same or similar frequencies, or resonate at a specific frequency, they can exchange each other.
  • the energy is the same as the resonance principle of the sound.
  • the coils of the same vibration frequency arranged in the magnetic field can be supplied from one to the other; thus, when the whole system operates at their resonance frequencies, the magnetic field can be efficiently used in two
  • the coils are transmitted to each other to transfer energy. This energy is transmitted in a manner that does not require the same size of the coil and does not require alignment, and the transmission distance is also greatly improved compared with the magnetic induction type.
  • the magnetic resonance charging efficiency is much lower than that of the inductive type.
  • the magnetic resonance transmitting coil space is on the other hand.
  • the distribution is not uniform enough, the receiving coils are placed at different positions, and the coupling between the transmitting coils is different, which causes the resonance frequency between them to drift.
  • the efficiency of the system is greatly affected. Impact.
  • the present invention provides a wireless charging system capable of realizing an energy funnel effect and a wireless charging method thereof, which solves the technical problem of the existing wireless charging technology by forming an energy funnel effect between the transmitting coil and the receiving coil.
  • a wireless charging system and a charging method thereof which can effectively improve the transmission efficiency and transmission distance of a magnetic resonance wireless energy transmission system and have good positional robustness, can realize an energy funnel effect.
  • the technical solution adopted by the present invention is to provide a wireless charging system capable of realizing an energy funnel effect, comprising: a wireless transmitting device including a wireless transmitting control circuit and a wireless transmitting coil, the wireless transmitting coil and the wireless The transmitting control circuit is electrically connected; the wireless receiving device comprises a wireless receiving coil, a magnetic resonance exciter, a wireless transmitting control circuit and a load, and the magnetic resonance exciter is disposed in the coil by the wireless receiving coil, the wireless receiving The coil, the wireless transmission control circuit and the load are electrically connected in sequence, and a planar winding area of the wireless receiving coil is smaller than a planar winding area of the wireless transmitting coil.
  • the magnetic resonance exciter comprises a first dielectric plate and a first metal spiral ring and a second metal spiral ring formed on opposite side plates of the first dielectric plate;
  • the first metal spiral ring is disposed parallel to the second metal spiral ring and oppositely disposed on the two side plates of the first dielectric plate; and the wireless receiving coil is corresponding to the periphery of the first dielectric plate
  • the ground circle is provided on the circumferential side of the magnetic resonance element.
  • the first metal spiral ring and the second metal spiral ring are helical coils of the same structure but symmetrically disposed on opposite sides of the first dielectric plate.
  • the first dielectric plate is a ceramic plate; the first metal spiral ring and the second metal spiral ring are spiral rings wound by a metal copper wire.
  • the magnetic resonance exciter comprises a second dielectric plate, a metal wire and a lumped parameter electronic component;
  • the second dielectric plate is formed with an oppositely disposed bottom plate and a top plate, the bottom plate and the bottom plate a vertical wall connection is provided between the top plates;
  • the metal wires are entangled on the vertical wall of the second dielectric plate;
  • the lumped parameter electronic components are connected to the metal wires and assembled on the second dielectric plate;
  • the wireless receiving coil is disposed on the circumferential side of the magnetic resonance element corresponding to the metal wire.
  • the wireless receiving device includes one or more of the magnetic resonance elements.
  • the load is a pure resistive element or a battery.
  • the resonant frequency of the wireless transmit coil deviates from the operating frequency of the wireless charging system, and the resonant frequency falls outside the range of the operating frequency ⁇ operating frequency * 50%.
  • the resonant frequency of the magnetic resonance element is near the operating frequency of the wireless charging system, and the resonant frequency falls within the range of the operating frequency ⁇ operating frequency * 20%.
  • the present invention also provides a wireless charging method that can implement an energy funnel effect, and the steps of the method include:
  • the wireless transmitting coil, the wireless receiving coil, and the magnetic resonance element are coupled to each other via a magnetic resonance evanescent field line for wireless energy transmission, so that the magnetic resonance element has an operating frequency of the wireless charging system
  • the real equivalent of the maximum equivalent permeability The real equivalent of the maximum equivalent permeability.
  • the present invention forms an energy funnel effect by a wireless charging system, and enables a magnetic induction line generated by a wireless transmission coil that is passed through a high-frequency current to pass through a magnetic resonance exciter surrounded by a wireless receiving coil within a certain distance. And it is not affected by the movement of the receiving coil, so that the wireless transmitting device and the wireless receiving device form an excellent transmission efficiency and greatly improve the charging efficiency, and realize a long-distance and high-efficiency wireless power transmission.
  • the wireless charging system of the present invention can realize the technical effect that the charging efficiency does not change with the change of the position within the charging range by forming a funnel-shaped magnetic field distribution between the wireless transmitting coil and the wireless receiving coil.
  • the system of the present invention facilitates miniaturization of the receiving end device of the wireless energy transmission system.
  • the system of the invention has the beneficial technical effects of simple device process and low preparation cost.
  • FIG. 1 is a schematic diagram of the overall architecture of a wireless charging system of the present invention.
  • FIG. 2 is a schematic structural view of a wireless transmitting apparatus of the present invention.
  • FIG. 3 is a schematic structural view of a wireless receiving apparatus of the present invention.
  • Figure 4 is a schematic view showing the structure of a first embodiment of the magnetic resonance element of the present invention.
  • Figure 5 is a schematic view showing the structure of a second embodiment of the magnetic resonance element of the present invention.
  • Fig. 6 is a schematic view showing the state of use of the wireless transmitting apparatus and the wireless receiving apparatus of the present invention.
  • Figure 7 is a schematic diagram showing the distribution of a funnel-shaped magnetic field when the wireless transmitting device of the present invention is aligned with the wireless receiving device.
  • FIG. 8 is a schematic diagram of a funnel-shaped magnetic field distribution when the wireless transmitting device of the present invention is misaligned with the wireless receiving device.
  • FIG. 9 is a schematic diagram showing the transmission efficiency of the wireless receiving apparatus of the system of the present invention maintaining a vertical transmission distance of 10 cm and being located at different positions with the wireless transmitting apparatus.
  • Wireless transmitting device 10 wireless transmitting control circuit 11; wireless transmitting coil 12; wireless receiving device 20; wireless receiving coil 21; magnetic resonance element 22; wireless transmitting control circuit 23; load 24; magnetic resonance element 22A; Plate 221; first metal spiral ring 222; second metal spiral ring 223; magnetic resonance element 22B; second dielectric plate 224; funnel-shaped magnetic field 30.
  • the wireless charging system includes a wireless transmitting device 10 and a wireless receiving device 20, and the wireless transmitting device 10 includes a wireless transmitting control circuit 11 and a wireless transmitting coil 12, and the wireless transmitting coil 12 and The wireless transmission control circuit 11 is electrically connected;
  • the wireless receiving device 20 includes a wireless receiving coil 21, a magnetic resonance element 22, a wireless transmission control circuit 23, and a load 24, and the magnetic resonance element 22 is received by the wireless
  • the coil 21 is disposed in the coil, and the wireless receiving coil 21, the wireless transmission control circuit 23 and the load 24 are electrically connected in sequence; wherein the wireless charging system of the present invention passes the plane of the wireless receiving coil 21
  • the winding area is smaller than the planar winding area of the wireless transmitting coil 12, thereby forming an energy funnel effect between the wireless transmitting coil 12 and the wireless receiving coil 21, that is, energy is emitted from a large-area section and then flows into a small-area section. An effect. Therefore, in the present invention, the small-area wireless receiving coil 21 can collect the magnetic field
  • the wireless receiving device 20 may include one or more of the magnetic resonance elements 22.
  • the load 24 can be selected from, but not limited to, a purely resistive element or a battery.
  • the resonant frequency of the wireless transmitting coil 12 is far from the operating frequency of the wireless charging system, and the resonant frequency preferably falls within the operating frequency ⁇ operating frequency * 50% Outside the scope. Thereby, the resonant frequency of the wireless transmitting coil 12 is far from the operating frequency of the wireless charging system of the present invention, thereby forming a no-load, effectively reducing the circuit transmitting power to within 1% of the maximum transmitting power.
  • the resonant frequency of the magnetic resonance element 22 is preferably near the operating frequency of the wireless charging system, and the resonant frequency preferably falls within the range of the operating frequency ⁇ operating frequency * 20%.
  • the operating frequency of the wireless charging system is preferably 10 kHz to 50 MHz.
  • the aforementioned operating frequency range may be adjusted according to the actual working requirements of the wireless charging system, and is not intended to limit the present invention.
  • the wireless transmitting coil 12 is preferably a spiral metal copper coil, and the wireless transmitting coil 12 has a first end and a second end connected to the wireless transmission control circuit 11, specifically, The first end and the second end of the wireless transmitting coil 12 extend and are led out, and the wire body between the first end and the second end has a square spiral shape, and the number of turns is 2 turns. More specifically, the square winding area of the wireless transmitting coil 12 may have a length of 180 mm and a width of 120 mm, and the coil has a wire body cross-sectional diameter of 2 mm.
  • the wireless receiving coil 21 is preferably a rectangular metal copper coil, and the wireless receiving coil 21 has a first end and a second end connected to the wireless transmission control circuit 23, specifically, The second end of the first end of the wireless receiving coil 21 extends and is led out, and the wire body between the first end and the second end is formed in a square frame shape. More specifically, the square winding area of the wireless receiving coil 21 may have a length of 120 mm and a width of 70 mm, and the coil has a wire body cross-sectional diameter of 2 mm.
  • the specifications of the foregoing wireless transmitting coil 12 and the wireless receiving coil 21 are not used to limit the present invention, and the specifications of the wireless transmitting coil 12 and the wireless receiving coil 21 may be coordinated or independently adjusted according to the working requirements of the wireless charging system. .
  • the magnetic resonance element 22 in the wireless charging system of the present invention includes at least two embodiments.
  • the magnetic resonance element 22A includes a first dielectric plate 221 and a first metal spiral ring 222 and a second metal spiral ring 223 formed on opposite side plates of the first dielectric plate 221;
  • the metal spiral ring 222 is disposed on the two side plates of the first dielectric plate 221 in parallel with the second metal spiral ring 223; and the wireless receiving coil 21 is corresponding to the first dielectric plate.
  • a 221 circumferential circle is provided on the circumferential side of the magnetic resonance element 22A.
  • the first metal spiral ring 222 and the second metal spiral ring 223 are spiral coils of the same structure but symmetrically disposed on opposite sides of the first dielectric plate 221.
  • the number of turns of the spiral ring is changed according to the characteristic of the first dielectric plate 22 to form a real part of the maximum equivalent permeability at the operating frequency of the system to maximize the energy generated by the wireless transmitting coil 12.
  • the adsorption i.e., the majority of the magnetic field of the wireless charging system of the present invention is concentrated around the magnetic resonance element 22 to allow more magnetic lines of inductance to pass through the wireless receiving coil 21.
  • the first metal spiral ring 222 and the second metal spiral ring 223 are formed on the surface of the first dielectric plate 221 by a printed circuit board processing technique. More specifically, the metal spiral ring is formed on the surface of the dielectric plate by an etching technique. The first metal spiral ring 222 and the second metal spiral ring 223 are specifically mirror-symmetrically disposed on the two side plates of the first dielectric plate 221 .
  • the first dielectric plate 221 may be a ceramic plate, and the first metal spiral ring 222 and the second metal spiral ring 223 may be metal copper wire wound. a spiral ring.
  • the specific selection of the first dielectric plate 221 and the first metal spiral ring 222 and the second metal spiral ring 223 is not limited to the foregoing, and may be selected from other materials well known in the art that can perform the same function.
  • the first dielectric plate 221 is preferably a ceramic plate having a dielectric constant of 10.2.
  • the thickness of the first dielectric plate 221 is preferably 0.8 mm.
  • each of the magnetic resonance elements 22A may have a length of 50 mm and a width.
  • two vertically side-by-side magnetic resonance elements 22A are adjacent to each other to form a total working area having a length of 100 mm and a width of 50 mm.
  • the first metal spiral ring 222 and the second metal spiral ring 223 are formed by a copper strip winding having a square cross section, The thickness of the copper strip is 0.035 mm, and the width of the copper strip around the first dielectric plate 221 is 1 mm.
  • the copper strip is wound around the crucible to form a multi-turn spiral structure, and the spacing between the copper strips of each coil is 0.8 mm.
  • the number of turns of the copper strip of the first metal spiral ring 222 and the second metal spiral ring 223 may be specifically 7 turns.
  • the magnetic resonance element 22B includes a second dielectric plate 224, a metal wire 225, and a lumped parameter electronic component;
  • the second dielectric plate 224 is formed with an oppositely disposed bottom plate and a top plate, and the bottom plate is disposed between the bottom plate and the top plate a vertical wall connection;
  • the metal wire 225 is entangled on the vertical wall of the second dielectric plate 224;
  • the lumped parameter electronic component is connected to the metal wire 225 and mounted on the second dielectric plate 224;
  • the wireless receiving coil 21 is looped around the metal wire 225 on the circumferential side of the magnetic resonance element 22B.
  • the second medium plate 224 includes a bottom plate and a top plate disposed opposite to each other, and a vertical wall connection is formed between the bottom plate and the top plate, and the vertical wall is retracted inside the edge of the bottom plate and the top plate.
  • the outer surface of the vertical wall and the edge of the bottom plate and the edge of the top plate together define a winding space for forming the metal wire 225; the magnetic resonance element 22B is provided between the inner surface of the vertical wall and the bottom plate and the The empty window of the top plate.
  • the second dielectric plate 224 is shaped into a three-dimensional rectangular structure.
  • the bottom plate and the top plate are formed into a square plate, and the vertical wall is formed by four folded L-shaped flat plates (such as a dotted L-shaped area in FIG. 5), and the folded plate is The corner is shaped as an R-angle structure such that the metal wire 225 is conformed to the outside of the upright wall.
  • the wireless charging system in which the energy funnel effect can be realized by the present invention has been described above, and the wireless charging method of the wireless charging system will be described below.
  • the steps of the method include:
  • Step 1 As shown in FIG. 6, a wireless charging system capable of realizing an energy funnel effect as described above is provided, wherein the wireless transmitting coil 12 has a large planar winding area with respect to the wireless receiving coil 21;
  • Step 2 driving the wireless transmitting coil 12 to transmit energy to the wireless receiving coil 21, as shown in FIG. 7 and FIG. 8, the energy forming a funnel between the wireless transmitting coil 12 and the wireless receiving coil 21. Effect, that is, a funnel-shaped magnetic field 30 is formed between the wireless transmitting coil 12 and the wireless receiving coil 21;
  • Step 3 The wireless transmitting coil 12, the wireless receiving coil 21 and the magnetic resonance element 22 are mutually coupled by a magnetic resonance evanescent field line for wireless energy transmission, so that the magnetic resonance element 22 is in the wireless
  • the operating system at the charging system has the real equivalent of the maximum equivalent permeability.
  • energy is emitted from a large-area cross section (wireless transmitting device 10) and flows into a small-area cross section (wireless receiving device 20) by the foregoing technical solution, thereby forming an energy funnel effect, that is, forming a structure as shown in FIG.
  • the funnel-shaped magnetic field 30 shown in FIG. this effect is embodied in that a small-area wireless receiving coil can collect a magnetic field emitted by a large-area wireless transmitting coil, thereby achieving efficient wireless charging.
  • the wireless transmitting coil 12 of the present invention When the wireless transmitting coil 12 of the present invention is connected to a high frequency current, within a certain distance, the magnetic sensing lines generated by the wireless transmitting coil 12 are all passed through the magnetic resonance element 22 surrounded by the wireless receiving coil 21, and are not received by the wireless receiver.
  • the movement of the coil 21 is affected (Fig. 8). That is, most of the energy emitted by the wireless transmitting coil 12 is collected by the magnetic resonance element 22, so that an excellent transmission efficiency is formed between the wireless transmitting device 10 and the wireless receiving device 20, and the charging efficiency is also greatly improved.
  • the “certain distance” between the wireless transmitting coil 12 and the wireless receiving coil 21 can be adaptively adjusted according to the application scenario and the coil configuration; the coil configuration includes the size of the coil, Shape and so on.
  • the resonant frequency f of the non-resonant wireless transmitting coil 12 and the wireless receiving coil 21 is transmitted away from the resonant frequency f 0 of the wireless charging system, and the resonant frequency f of the magnetic resonance element 22 is magnetically close to the wireless charging.
  • the resonant frequency f 0 of the system is such that the magnetic lines of inductance generated by the wireless transmitting coil 12 that is passed into the high frequency current are all passed through the magnetic resonance element 22 surrounded by the wireless receiving coil 21 and are not affected by the movement of the receiving coil.
  • Figure 9 is a symbolic illustration of the following:
  • X, y, z three-dimensional coordinate axis
  • h a vertical transmission distance between the wireless transmitting device 10 and the wireless receiving device 20;
  • 94% refers to the transmission efficiency of different locations in the plane area where the wireless receiving device 20 is located; for example: 92%, 93%, 95%.
  • This wireless charging system that can realize the energy funnel effect can be well applied to the fields of radio energy transmission, miniaturization of the receiving end, and biomedicine.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

La présente invention concerne un système de charge sans fil apte à obtenir un effet d'entonnoir d'énergie et son procédé de charge sans fil. Le système comprend un dispositif de transmission sans fil et un dispositif de réception sans fil ; le dispositif de transmission sans fil comprend un circuit de commande de transmission sans fil et une bobine de transmission sans fil ; et la bobine de transmission sans fil est électriquement connectée au circuit de commande de transmission sans fil ; le dispositif de réception sans fil comprend une bobine de réception sans fil, un excimère à résonance magnétique, un circuit de commande de transmission sans fil et une charge ; l'excimère à résonance magnétique est entouré par la bobine de réception sans fil ; la bobine de réception sans fil, le circuit de commande de transmission sans fil et la charge sont connectés électriquement en séquence ; la zone de spire plane de la bobine de réception sans fil est inférieure à celle de la bobine de transmission sans fil, et sur cette base, un effet d'entonnoir d'énergie est obtenu entre la bobine d'émission et la bobine de réception ; l'efficacité de transmission et la distance de transmission d'un système de transmission d'énergie sans fil à résonance magnétique sont améliorées, et un système de charge sans fil ayant une meilleure robustesse et un procédé de charge de ce dernier sont formés.
PCT/CN2018/085569 2018-05-04 2018-05-04 Système de charge sans fil apte à obtenir un effet d'entonnoir d'énergie et son procédé de charge sans fil WO2019210503A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/085569 WO2019210503A1 (fr) 2018-05-04 2018-05-04 Système de charge sans fil apte à obtenir un effet d'entonnoir d'énergie et son procédé de charge sans fil

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PCT/CN2018/085569 WO2019210503A1 (fr) 2018-05-04 2018-05-04 Système de charge sans fil apte à obtenir un effet d'entonnoir d'énergie et son procédé de charge sans fil

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WO2019210503A1 true WO2019210503A1 (fr) 2019-11-07

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103366916A (zh) * 2012-03-31 2013-10-23 深圳光启创新技术有限公司 一种无线能量接收线圈及无线能量传输***
CN104135088A (zh) * 2014-08-08 2014-11-05 哈尔滨工业大学 应用于无线电能传输的可抑制频率***的非相同收发线圈对及其制造方法
CN106936225A (zh) * 2015-12-31 2017-07-07 中惠创智无线供电技术有限公司 一种用于电动汽车无线充电的定位***及其方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103366916A (zh) * 2012-03-31 2013-10-23 深圳光启创新技术有限公司 一种无线能量接收线圈及无线能量传输***
CN104135088A (zh) * 2014-08-08 2014-11-05 哈尔滨工业大学 应用于无线电能传输的可抑制频率***的非相同收发线圈对及其制造方法
CN106936225A (zh) * 2015-12-31 2017-07-07 中惠创智无线供电技术有限公司 一种用于电动汽车无线充电的定位***及其方法

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