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1. EP2985846 - Wireless power transmission

Office European Patent Office
Application Number 14180978
Application Date 14.08.2014
Publication Number 2985846
Publication Date 17.02.2016
Publication Kind A1
IPC
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
J
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
5
Circuit arrangements for transfer of electric power between ac networks and dc networks
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
J
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
7
Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
02
for charging batteries from ac mains by converters
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
5
Near-field transmission systems, e.g. inductive loop type
H02J 5/00
H02J 7/02
H04B 5/00
CPC
H04B 5/0037
H02J 5/005
H02J 7/025
H02J 50/12
H04B 5/0075
Applicants NXP BV
Inventors BÜTHKER HENRICUS CORNELIS JOHANNES
BERKHOUT MARCO
VAN LAMMEREN JOHANNES PETRUS MARIA
Designated States
Priority Data 14180978 14.08.2014 EP
Title
(DE) Berührungslose Stromversorgung
(EN) Wireless power transmission
(FR) Transfert d'énergie sans fil
Abstract
(EN)
Apparatus and methods for extracting wirelessly transmitted electrical power are described. A wireless electrical power receiver comprises a receiver resonator arranged to inductively generate an AC electrical current and a rectifier to receive and convert the AC electrical current from the receiver resonator into DC electrical power which is supplied to a load. A switching arrangement can selectively provide a short circuit to retain the AC electrical current within the receiver resonator when the switch is operated and a controller can supply a control signal to operate the switching arrangement to control the AC electrical current supplied to the rectifier.