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Wireless power transmission device and control method therefor

專利號(hào)
US10097041B2
公開日期
2018-10-09
申請(qǐng)人
LG ELECTRONICS INC.(KR Seoul)
發(fā)明人
Byungsang Jung; Beomseok Chae; Yongcheol Park; Kyunghwan Kim
IPC分類
H02J50/12; H02J50/80
技術(shù)領(lǐng)域
power,wireless,receiver,resonant,unit,may,coil,in,control,lc
地域: Seoul

摘要

The present specification which relates to a wireless power transmission device and a control method, capable of transmitting and receiving power wirelessly comprises a power supply unit for supplying power to a receiving device to transmit power wirelessly; and a power transmission control unit for, periodically generating a waveform with a particular frequency, measuring an attenuation coefficient of the waveform at each cycle, measuring a variation in the attenuation coefficient at each cycle, and determining the type of an external material. The present invention has a technical feature wherein the power transmission control unit determines whether to transmit power wirelessly to the receiving device on the basis of the type of the external material.

說明書

For an example associated with the present disclosure, said transmitting power to the receiver in a wireless manner may suspend the transmission of the power based on a request signal for suspending the transmission of power that is received from the receiver through the communication.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.

In the drawings:

FIG. 1 is an exemplary view conceptually illustrating a wireless power transmitter and an electronic device according to the embodiments of the present invention;

FIGS. 2A and 2B are exemplary block diagrams illustrating the configuration of a wireless power transmitter and an electronic device that can be employed in the embodiments disclosed herein, respectively;

FIG. 3 is a view illustrating a concept in which power is transferred from a wireless power transmitter to an electronic device in a wireless manner according to an inductive coupling method;

FIGS. 4A and 4B are block diagrams illustrating part of a wireless power transmitter and an electronic device in a magnetic induction method that can be employed in the embodiments disclosed herein;

權(quán)利要求

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