白丝美女被狂躁免费视频网站,500av导航大全精品,yw.193.cnc爆乳尤物未满,97se亚洲综合色区,аⅴ天堂中文在线网官网

Wireless power transmission device and control method therefor

專利號
US10097041B2
公開日期
2018-10-09
申請人
LG ELECTRONICS INC.（KR Seoul）
發(fā)明人
Byungsang Jung; Beomseok Chae; Yongcheol Park; Kyunghwan Kim
IPC分類
H02J50/12; H02J50/80
技術領域
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

As described above, a wireless power transmitter and a control method thereof according to the embodiments of the present disclosure may detect an attenuation factor of resonant energy of the LC resonant circuit of the wireless power transmitter, thereby determining the existence or non-existence of an external metal material.

As illustrated in the above, a wireless power transmitter and a control method thereof according to the embodiments of the present disclosure may detect an attenuation factor of the LC resonant circuit, thereby determining the existence or non-existence of an external metal material.

Hereinafter, a wireless power transmitter according to the embodiments of the present disclosure describes a method of detecting a type of external material, and an alignment state and a capacitance of the receiver based on a change rate for each period of the attenuation factor. FIG. 32 is a flow chart illustrating a method of detecting a type of external material, and an alignment state and a capacitance of the receiver based on a change rate for each period of an attenuation factor, and FIGS. 35, 36 and 37 are graphs illustrating a change of an attenuation factor according to the type of an external material, and FIGS. 38, 39 and 40 are graphs illustrating a change of an attenuation factor for each period when there is a receiver.

A wireless power transmitter according to an embodiment of the present disclosure may carry out the process of generating a waveform at a specific frequency to detect an external material (S310).

權利要求

1
微信群二維碼
意見反饋