US 11,641,113 B2 · Non-contact power transmission apparatus

Abstract

A non-contact power transmission apparatus accurately determines the kind of object that is placed on the charging deck of the non-contact power transmission apparatus, and, only when a non-contact power receiving apparatus is placed on the power transmission apparatus, allows power transmission and data communication to take place, thereby accurately determining the state of the receiver side and efficiently controlling the transmission of power. In the power transmission apparatus, the power supplied to the non-contact power receiving apparatus is measured, and the output power of the wireless power signal output from two different cores is controlled, thereby allowing the charging operation to be stably conducted even if the non-contact power receiving apparatus is moved anywhere on the power transmission apparatus. The power transmission apparatus improves both the reliability of operation of the non-contact charging system, and the competitiveness of related products, such as portable terminals, battery packs and the like.

Claims20

Dependent claims

A non-contact power transmission apparatus comprising:

a primary core configured to transmit a wireless power signal;
and
a controller configured to:
detect an object placed near the non-contact power transmission apparatus;
based on detection of the object, cause the primary core to transmit a signal;
determine whether the object is a non-contact power receiving apparatus based on whether or not a response to the signal is received within a predefined time period;
and
cause the primary core to transmit the wireless power signal to the non-contact power receiving apparatus.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/120,487Filed 14 Dec 2020 · continuation

Priority

KR 10-2008-012627112 Dec 2008

Published

US 2021/0194288 A124 Jun 2021

Granted

2 May 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification16 codes

H02J 3/322
Using batteries or super capacitors with converting means: the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid…
H01F 38/14
Adaptations of transformers or inductances for specific applications or functions: inductive couplings
H02J 7/50
Circuit arrangements for charging or discharging batteries or for supplying loads from batteries: acting upon multiple batteries simultaneously or…
H02J 7/731
Characterised by the mechanical construction: specially adapted for holding portable devices containing batteries

Family

PCT/KR2009/007430Parent of this continuation · filed 11 Dec 2009

Application13/162,861Parent of this continuation · filed 17 Jun 2011

Application13/857,858Parent of this continuation · filed 5 Apr 2013

US 8,436,492 B2Parent of this continuation · filed 7 May 2013

US 8,552,593 B2Parent of this continuation · filed 8 Oct 2013

Application14/798,440Parent of this continuation · filed 13 Jul 2015

US 9,269,490 B2Parent of this continuation · filed 23 Feb 2016

Application15/358,436Parent of this continuation · filed 22 Nov 2016

US 9,531,197 B2Parent of this continuation · filed 27 Dec 2016

US 2021/0194288 A1Pre-grant publication · published 24 Jun 2021

US 10,886,780 B2Parent of this continuation

Application12/741,534Parent of this continuation

US 2011/0140538 A1Published application

US 2011/0260549 A1Published application

US 2014/0139033 A1Published application

US 2015/0318715 A1Published application

US 2017/0141617 A1Published application

US 11,641,113 B2This patent

From the US filing history. Foreign family members aren’t listed.

Non-contact power transmission apparatus

Life of this patent

Non-contact power transmission apparatus

Life of this patent

Abstract

Claims20