US 8,541,975 B2 · System and method for efficient wireless charging of a mobile terminal

Abstract

Disclosed is a method and apparatus for efficient wireless charging of a mobile terminal. The method includes detecting the mobile terminal by a charging apparatus, receiving a unique identifier of the mobile terminal from the mobile terminal and determining if the mobile terminal is a rechargeable device, when the mobile terminal is a rechargeable device, applying a direct voltage to a first coil of the charging apparatus and arranging the charging apparatus and the mobile terminal, and terminating an application of the direct voltage and then applying an alternating voltage, to supply charging power required for the mobile terminal.

Claims17

Dependent claims

A charging apparatus for efficient wireless charging of a mobile terminal, comprising:

at least one sensor for detecting the mobile terminal;
a Radio Frequency (RF) receiver for receiving a unique identifier of the mobile terminal from the mobile terminal and determining if the mobile terminal is a rechargeable device;
a power supply unit for receiving an alternating voltage from an external power source and transmitting the received alternating voltage;
at least one modulator for directly applying the alternating voltage received from the power supply unit to a first coil, or converting the alternating voltage received from the power supply unit to a direct voltage and applying the converted direct voltage to the first coil;
and
a controller for controlling whether to convert the alternating voltage received from said at least one modulator.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

12/884,065Filed 16 Sep 2010

Priority

KR 10-2009-008754116 Sep 2009

Published

US 2011/0062914 A117 Mar 2011

Granted

24 Sep 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

H02J 50/402
Using two or more transmitting or receiving devices: the two or more transmitting or the two or more receiving devices being integrated in the…
H02J 7/70
Circuit arrangements for charging or discharging batteries or for supplying loads from batteries: characterised by the mechanical construction
H02J 50/10
Circuit arrangements or systems for wireless supply or distribution of electric power: using inductive coupling
H02J 50/80
Circuit arrangements or systems for wireless supply or distribution of electric power: involving the exchange of data, concerning supply or…

System and method for efficient wireless charging of a mobile terminal

Life of this patent

System and method for efficient wireless charging of a mobile terminal

Life of this patent

Abstract

Claims17