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1. WO2020114926 - DEVICE AND METHOD FOR WIRELESS POWER TRANSFER

Publication Number WO/2020/114926
Publication Date 11.06.2020
International Application No. PCT/EP2019/083212
International Filing Date 02.12.2019
IPC
H02J 50/10 2016.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
50Circuit arrangements or systems for wireless supply or distribution of electric power
10using inductive coupling
H02J 50/20 2016.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
50Circuit arrangements or systems for wireless supply or distribution of electric power
20using microwaves or radio frequency waves
H02J 50/80 2016.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
50Circuit arrangements or systems for wireless supply or distribution of electric power
80involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
H02J 50/60 2016.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
50Circuit arrangements or systems for wireless supply or distribution of electric power
60responsive to the presence of foreign objects, e.g. detection of living beings
CPC
H02J 50/10
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
50Circuit arrangements or systems for wireless supply or distribution of electric power
10using inductive coupling
H02J 50/20
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
50Circuit arrangements or systems for wireless supply or distribution of electric power
20using microwaves or radio frequency waves
H02J 50/80
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
50Circuit arrangements or systems for wireless supply or distribution of electric power
80involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
Applicants
  • KONINKLIJKE PHILIPS N.V. [NL]/[NL]
Inventors
  • ETTES, Wilhelmus, Gerardus, Maria
  • VELTMAN, Eddy, Gerrit
  • VAN VUGT, Henricus, Antonius, Gerardus
Agents
  • PHILIPS INTELLECTUAL PROPERTY & STANDARDS
Priority Data
18210392.905.12.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DEVICE AND METHOD FOR WIRELESS POWER TRANSFER
(FR) DISPOSITIF ET PROCÉDÉ DE TRANSFERT D'ÉNERGIE SANS FIL
Abstract
(EN)
A power transfer device is a power transmitter (201) or a power receiver (205) conducting power transfer using an electromagnetic power transfer signal employing a repeating time frame comprising a power transfer time interval and an object detection time interval. A power transfer circuit (303, 307) comprises a power transfer coil (203, 207) receiving or generating the power transfer signal during the power transfer time intervals. A communicator (315, 323) communicates with the other device via an electromagnetic communication signal. A communication resonance circuit (317, 321) comprises a communication antenna (319, 325) for transmitting or receiving the electromagnetic communication signal. During the communication, the communication resonance circuit (317, 321) provides a resonance at a first resonance frequency to the communicator (315, 323). A controller (333, 335) adapts the communication resonance circuit to not provide the resonance at the first resonance frequency to the communicator during object detection time intervals. The approach may provide improved detection of resonance objects, such as smart cards (e.g. NFC cards).
(FR)
La présente invention concerne un dispositif de transfert d'énergie qui est un émetteur d'énergie (201) ou un récepteur d'énergie (205) effectuant un transfert d'énergie à l'aide d'un signal de transfert d'énergie électromagnétique employant une trame temporelle répétitive comprenant un intervalle de temps de transfert d'énergie et un intervalle de temps de détection d'objet. Un circuit de transfert d'énergie (303, 307) comprend une bobine de transfert d'énergie (203, 207) recevant ou générant le signal de transfert d'énergie pendant les intervalles de temps de transfert d'énergie. Un appareil de communication (315, 323) communique avec l'autre dispositif par l'intermédiaire d'un signal de communication électromagnétique. Un circuit de résonance de communication (317, 321) comprend une antenne de communication (319, 325) permettant d'émettre ou recevoir le signal de communication électromagnétique. Pendant la communication, le circuit de résonance de communication (317, 321) fournit une résonance à une première fréquence de résonance à l'appareil de communication (315, 323). Un dispositif de commande (333 335) adapte le circuit de résonance de communication pour ne pas fournir la résonance à la première fréquence de résonance à l'appareil de communication pendant des intervalles de temps de détection d'objet. L'invention peut fournir une détection améliorée d'objets de résonance, tels que des cartes à puce (par exemple, des cartes NFC).
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Latest bibliographic data on file with the International Bureau