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1. WO2012145327 - WIRELESS POWER TRANSMITTER TUNING

Publication Number WO/2012/145327
Publication Date 26.10.2012
International Application No. PCT/US2012/033956
International Filing Date 17.04.2012
Chapter 2 Demand Filed 14.02.2013
IPC
H04B 5/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
5Near-field transmission systems, e.g. inductive loop type
H02J 5/00 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
5Circuit arrangements for transfer of electric power between ac networks and dc networks
H02J 17/00 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
17Systems for supplying or distributing electric power by electromagnetic waves
CPC
H02J 50/12
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
12of the resonant type
H02J 50/40
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
40using two or more transmitting or receiving devices
H02J 50/60
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
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
H02J 7/025
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
7Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
02for charging batteries from ac mains by converters
022characterised by the type of converter
025using non-contact coupling, e.g. inductive, capacitive
H04B 5/0037
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
5Near-field transmission systems, e.g. inductive loop type
0025Near field system adaptations
0037for power transfer
Applicants
  • QUALCOMM INCORPORATED [US]/[US] (AllExceptUS)
  • LOW, Zhen Ning [SG]/[US] (UsOnly)
  • WHEATLEY III, Charles Edward [US]/[US] (UsOnly)
  • KASTURI, Sreenivas [IN]/[US] (UsOnly)
Inventors
  • LOW, Zhen Ning
  • WHEATLEY III, Charles Edward
  • KASTURI, Sreenivas
Agents
  • ABUMERI, Mark M.
Priority Data
13/399,29217.02.2012US
61/477,10919.04.2011US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) WIRELESS POWER TRANSMITTER TUNING
(FR) RÉGLAGE D'ÉMETTEUR D'ALIMENTATION SANS FIL
Abstract
(EN)
This disclosure provides systems, methods and apparatus for tuning a wireless power transmitter (1404). In one aspect an apparatus (1406) configured to wirelessly provide power to a load is provided. The apparatus (1406) includes a transmit circuit (1450) including a transmit coil (1414). The transmit circuit (1450) is configured to wirelessly provide power to the load. The transmit coil (1414) is configured to resonate at a resonant frequency. The transmit circuit (1450) has a reactance. The apparatus (1406) further includes a detection circuit (1480) configured to detect a change in the resonant frequency while providing power to the load. The apparatus (1406) further includes a tuning circuit (852) configured to adjust the reactance based on the change.
(FR)
Cette invention concerne des systèmes, des procédés et des appareils de réglage d'un émetteur d'alimentation sans fil (1404). Selon un aspect, un appareil (1406) configuré pour fournir sans fil de l'énergie à une charge est utilisé. L'appareil (1406) comprend un circuit d'émission (1450) comprenant une bobine d'émission (1414). Le circuit d'émission (1450) est configuré pour fournir sans fil de l'énergie à la charge. La bobine d'émission (1414) est configurée pour résonner à une fréquence de résonance. Le circuit d'émission (1450) possède une réactance. L'appareil (1406) comprend en outre un circuit de détection (1480) configuré pour détecter un changement de la fréquence de résonance pendant la fourniture d'énergie à la charge. L'appareil (1406) comprend en outre un circuit de réglage (852) configuré pour ajuster la réactance sur la base du changement.
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