WO2024144424A1 - Dispositif de transmission d'énergie sans fil - Google Patents
Dispositif de transmission d'énergie sans fil Download PDFInfo
- Publication number
- WO2024144424A1 WO2024144424A1 PCT/RU2023/000395 RU2023000395W WO2024144424A1 WO 2024144424 A1 WO2024144424 A1 WO 2024144424A1 RU 2023000395 W RU2023000395 W RU 2023000395W WO 2024144424 A1 WO2024144424 A1 WO 2024144424A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electromagnetic energy
- cavity resonator
- subwavelength
- power transmission
- wireless power
- 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.)
- Ceased
Links
Classifications
-
- 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
Definitions
- the invention relates to electrical engineering, and more specifically to wireless power transmission devices capable of charging one or more mobile devices simultaneously.
- the device contains a power source, an alternating current generator, a radio frequency amplifier, impedance matching circuits, an electromagnetic energy transmitter in the form of a loop antenna, a subwavelength cavity resonator consisting of metal conductors and capacitors, and including at least one electromagnetic energy receiver inside its space.
- a power source an alternating current generator, a radio frequency amplifier, impedance matching circuits, an electromagnetic energy transmitter in the form of a loop antenna, a subwavelength cavity resonator consisting of metal conductors and capacitors, and including at least one electromagnetic energy receiver inside its space.
- One of the eigenmodes has a maximum amplitude of the alternating magnetic field in the center of the subwavelength resonator, and the second - near the edges.
- This solution has a number of disadvantages: 1) the subwavelength cavity resonator has a geometry that is difficult to implement in rooms, since most of their walls will be under voltage, which can be dangerous with constant use; 2) another disadvantage of this device is the simultaneous excitation of two modes to obtain a uniform distribution of the amplitude of the alternating magnetic field inside space.
- the induction vector of an alternating magnetic field fluctuates in the horizontal plane, which is difficult to apply for domestic use.
- the closest solution adopted for the prototype is the work “Wireless Energy Transfer” (US patent US10819151B2, IPC H02J50/12, priority date 10/03/2016, publication date 10/27/2020).
- the device contains a power source, an alternating current generator, a radio frequency amplifier, impedance matching circuits, an electromagnetic energy transmitter in the form of a loop antenna, a subwavelength cavity resonator consisting of metal conductors and capacitors and including at least one electromagnetic energy receiver inside the space of the subwavelength cavity resonator.
- the device creates standing electromagnetic waves inside a subwavelength cavity resonator through a metal pole with a gap and a capacitor. Alternating current flows through the elements of the subwavelength cavity resonator and has a maximum at the metal column.
- the subwavelength cavity resonator is tuned to the operating resonant frequency.
- the disadvantage of the prototype is the uneven distribution of the amplitude of the alternating magnetic field in the internal space of the subwavelength cavity resonator, which leads to unequal efficiency of energy transfer depending on the location of the electromagnetic energy receivers.
- the problem to be solved by the present invention is to achieve equal charging efficiency of several electromagnetic energy receivers in the internal space of a subwavelength cavity resonator at the same frequency.
- the problem is solved by achieving a technical result, which consists in increasing the uniformity of the distribution of the amplitude of the alternating magnetic field in the internal space of the subwavelength cavity resonator.
- the problem is solved by achieving a technical result consisting in the use of a wireless energy transmission device, including at least a power source, an alternating current generator, a radio frequency amplifier, impedance matching circuits, an electromagnetic energy transmitter in the form of a loop antenna and a subwavelength cavity resonator consisting of metal conductors and capacitors, and including at least one receiver of electromagnetic energy inside the space of the resonator, characterized in that the subwavelength cavity resonator is an array of resonant circuits located parallel to each other, made of one or more turns of wire, and containing capacitors, while the resonant circuits connected to each other inductively and/or through conductors.
- Fig. 1 is an example of a block diagram of a wireless power transmission device, where (a) the output of the first matching circuit is connected to the subwavelength cavity resonator in a wired manner and (b) the output of the first matching circuit is connected to a loop antenna, which is inductively coupled to the subwavelength cavity resonator; in fig. 2 - (a) - numerically calculated distribution of the amplitude of the near alternating magnetic field of a wireless power transmission device along the X axis passing through the center of the subwavelength cavity resonator, and (b) - along the Y axis.
- the wireless power transmission device (Fig. 1) consists of a power source 1, to which an alternating current generator 2 and a radio frequency amplifier 3 are connected, connected in series with a first impedance matching circuit 4, and an electromagnetic energy transmitter 5.
- the first impedance matching circuit 4 is implemented, for example , from inductors and capacitors.
- a subwavelength cavity resonator is used, formed from several parallel resonant circuits 9, in the form of metal wires 10 separated by capacitors 11. Alternating current is supplied to the subwavelength cavity resonator, for example, by wire when connecting the output of the first matching circuit 12 to resonant circuits 9 (Fig. 1 (a)), or wirelessly by connecting the output of the first matching circuit 12 to the transmitting loop antenna (Fig.
- a receiving part which consists of an electromagnetic energy receiver 6, a second impedance matching circuit 7 and an ohmic load 8.
- a loop antenna is used as an electromagnetic energy receiver 6.
- the electromagnetic energy transmitter 5 is configured to inductively couple with the electromagnetic energy receiver 6.
- the second impedance matching circuit 7 is implemented, for example, from inductors and capacitors.
- the device operates as follows: a radio frequency amplifier 3, connected to a power source 1, amplifies the alternating electric current of frequency f created in the generator 2, which enters through the first impedance matching circuit 4 through output 12 into the electromagnetic energy transmitter 5.
- the first impedance matching circuit 4 ensures the matching of the output impedance of the radio frequency amplifier 3 and the input impedance of the electromagnetic energy transmitter 5.
- the current in the electromagnetic energy transmitter 5 excites the eigenmode of the subwavelength cavity resonator at the frequency f. Due to this, a near radio frequency magnetic field is concentrated inside the subwavelength cavity resonator, the magnetic induction vector of which is oriented perpendicular to the planes of the resonant circuits 9 in the internal space.
- Fig. 3 (a) shows the uniform distribution of the amplitude of the alternating magnetic field in the internal space of the subwavelength cavity resonator.
- the second matching circuit 6 makes it possible to match the output impedance of the electromagnetic energy receiver 6 and the input impedance of the ohmic load 8. Thanks to the uniform distribution of the amplitude of the alternating magnetic field, the wireless power transfer device can charge several mobile devices (not shown in the figure).
- Fig. 3(b) shows numerical results that reflect that the electromagnetic energy receiver 6 can be located anywhere in the internal space of the subwavelength cavity resonator and receive energy with the same efficiency without re-matching the impedances of the wireless power transmission device.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
L'invention se rapporte au domaine du génie électrique, notamment à des dispositifs de transmission d'énergie sans fil capables de charger un ou plusieurs dispositifs mobiles simultanément. Ce dispositif de transmission d'énergie sans fil comprend une source d'alimentation, un générateur de courant alternatif, un amplificateur radiofréquence, des circuits d'adaptation d'impédances, un émetteur d'énergie électromagnétique sous forme d'une antenne cadre et un résonateur volumétrique à sub-longueur d'onde comprenant des conducteurs métalliques et des condensateurs, et comprend en outre au moins un récepteur d'énergie électromagnétique dans l'espace du résonateur; le résonateur volumétrique à sub-longueur d'onde consiste en un massif de circuits résonnants disposés en parallèle les uns aux autres, faits d'une ou plusieurs spires de conducteur, et comprenant des condensateurs; les circuits résonnants sont reliés entre eux par induction et/ou par des conducteurs. Le résultat technique consiste en une efficacité de charge identique de plusieurs récepteurs d'énergie électromagnétique dans l'espace interne du résonateur volumétrique à sub-longueur d'onde à une même fréquence.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2022134223 | 2022-12-26 | ||
| RU2022134223A RU2802055C1 (ru) | 2022-12-26 | Устройство беспроводной передачи энергии |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024144424A1 true WO2024144424A1 (fr) | 2024-07-04 |
Family
ID=91718659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/RU2023/000395 Ceased WO2024144424A1 (fr) | 2022-12-26 | 2023-12-25 | Dispositif de transmission d'énergie sans fil |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2024144424A1 (fr) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2439765C1 (ru) * | 2007-12-19 | 2012-01-10 | Нокиа Корпорейшн | Беспроводная передача энергии |
| US20180097402A1 (en) * | 2016-10-03 | 2018-04-05 | Disney Enterprises, Inc. | Wireless power transmission |
| RU2696491C1 (ru) * | 2015-11-25 | 2019-08-02 | Конинклейке Филипс Н.В. | Беспроводная индуктивная передача мощности |
| JP2021145535A (ja) * | 2020-03-13 | 2021-09-24 | 株式会社豊田中央研究所 | 無線送電システム |
| WO2022168401A1 (fr) * | 2021-02-02 | 2022-08-11 | 株式会社村田製作所 | Système de transmission d'énergie sans fil et unité de réglage de fréquence de résonance pour système de transmission d'énergie sans fil |
-
2023
- 2023-12-25 WO PCT/RU2023/000395 patent/WO2024144424A1/fr not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2439765C1 (ru) * | 2007-12-19 | 2012-01-10 | Нокиа Корпорейшн | Беспроводная передача энергии |
| RU2696491C1 (ru) * | 2015-11-25 | 2019-08-02 | Конинклейке Филипс Н.В. | Беспроводная индуктивная передача мощности |
| US20180097402A1 (en) * | 2016-10-03 | 2018-04-05 | Disney Enterprises, Inc. | Wireless power transmission |
| JP2021145535A (ja) * | 2020-03-13 | 2021-09-24 | 株式会社豊田中央研究所 | 無線送電システム |
| WO2022168401A1 (fr) * | 2021-02-02 | 2022-08-11 | 株式会社村田製作所 | Système de transmission d'énergie sans fil et unité de réglage de fréquence de résonance pour système de transmission d'énergie sans fil |
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