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1. WO2012070634 - POWER TRANSMISSION DEVICE AND WIRELESS POWER TRANSMISSION SYSTEM INCLUDING THE SAME

Publication Number WO/2012/070634
Publication Date 31.05.2012
International Application No. PCT/JP2011/077109
International Filing Date 17.11.2011
IPC
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
H01F 38/14
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
38Adaptations of transformers or inductances for specific applications or functions
14Inductive couplings
H02J 5/005
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
005with inductive power transfer
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 50/20
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 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
H02J 7/042
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
04Regulation of charging current or voltage
042the charge cycle being controlled in response to a measured parameter
Applicants
  • SEMICONDUCTOR ENERGY LABORATORY CO., LTD. [JP]/[JP] (AllExceptUS)
  • KAMATA, Koichiro [JP]/[JP] (UsOnly)
Inventors
  • KAMATA, Koichiro
Priority Data
2010-26304826.11.2010JP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) POWER TRANSMISSION DEVICE AND WIRELESS POWER TRANSMISSION SYSTEM INCLUDING THE SAME
(FR) DISPOSITIF DE TRANSMISSION D'ÉLECTRICITÉ ET SYSTÈME DE TRANSMISSION D'ÉLECTRICITÉ SANS FIL LE COMPRENANT
Abstract
(EN)
Not a structure in which a resonance frequency of a power transmission device is set after a resonance frequency of a power receiving device is directly measured but a structure in which the resonance frequencies of the power receiving device and the power transmission device are estimated after reflection of an electromagnetic field for transmitting electric power to the power receiving device is monitored by the power transmission device is employed. After a capacitance value of a variable capacitor in a resonance coil of the power receiving device is once set to 0, an S11 parameter is detected while a frequency of an electromagnetic wave is changed, and the resonance frequency of the power transmission device is estimated on the basis of the S11 parameter.
(FR)
La présente invention utilise non pas une structure dans laquelle la fréquence de résonance d'un dispositif de transmission d'électricité est réglée une fois qu'une fréquence de résonance d'un dispositif de réception d'électricité est mesurée directement, mais une structure dans laquelle les fréquences de résonance du dispositif de réception d'électricité et du dispositif de transmission d'électricité sont estimées après que la réflexion d'un champ électromagnétique servant à transmettre de l'électricité vers le dispositif de réception d'électricité a été contrôlée par le dispositif de transmission d'électricité. Une fois qu'une valeur de capacitance d'un condensateur variable dans une bobine de résonance du dispositif de réception d'électricité est réglée à 0, un paramètre S11 est détecté pendant que la fréquence d'une onde électromagnétique est modifiée, et la fréquence de résonance du dispositif de transmission d'électricité est estimée en fonction du paramètre S11.
Also published as
DE112011103929
Latest bibliographic data on file with the International Bureau