US 9,431,830 B2 · Apparatus and method for wireless power transmission

Abstract

An apparatus and method for controlling a magnetic field when power is wirelessly transmitted are provided. According to one general aspect, a wireless power transmitter may include: a source resonator configured to wirelessly transmit power to a target device including at least one sub-resonator located there within; and a magnetic field distribution controller configured to control the distribution of the magnetic field within the resonator based the resonance frequency of the at least one sub-resonator and the resonance frequency of the source resonator.

Claims20

Dependent claims

A wireless power transmitter comprising:

a source resonator configured to wirelessly transmit power to a target device;
at least one sub-resonator positioned inside of the source resonator;
and
a controller configured to determine a direction of current flowing in the at least one sub-resonator based on a radio between a resonance frequency of the source resonator and a resonance frequency of the at least one sub-resonator,
wherein a distribution of a magnetic field is controlled based on the direction.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/463,354Filed 3 May 2012

Priority

KR 10-2011-004439512 May 2011

Published

US 2012/0286581 A115 Nov 2012

Granted

30 Aug 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

H02J 50/12
Using inductive coupling: of the resonant type
H02J 50/70
Circuit arrangements or systems for wireless supply or distribution of electric power: involving the reduction of electric, magnetic or…
H02J 50/80
Circuit arrangements or systems for wireless supply or distribution of electric power: involving the exchange of data, concerning supply or…
H02J 50/90
Circuit arrangements or systems for wireless supply or distribution of electric power: involving detection or optimisation of position, e.g. alignment

Apparatus and method for wireless power transmission

Life of this patent

Apparatus and method for wireless power transmission

Life of this patent

Abstract

Claims20