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1. CN103534956 - Wireless power transmitter tuning

Office China
Application Number 201280023757.1
Application Date 17.04.2012
Publication Number 103534956
Publication Date 22.01.2014
Grant Number 103534956
Grant Date 20.01.2016
Publication Kind B
IPC
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
5
Near-field transmission systems, e.g. inductive loop type
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
J
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
5
Circuit arrangements for transfer of electric power between ac networks and dc networks
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
J
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
17
Systems for supplying or distributing electric power by electromagnetic waves
H04B 5/00
H02J 5/00
H02J 17/00
CPC
H02J 50/12
H02J 50/40
H02J 50/60
H02J 50/80
H04B 5/0037
H02J 7/025
Applicants 高通股份有限公司
Inventors 刘振宁
查理·爱德华·惠特利三世
斯里尼瓦·卡斯图里
Agents 北京律盟知识产权代理有限责任公司 11287
Priority Data 13399292 17.02.2012 US
61/477,109 19.04.2011 US
Title
(EN) Wireless power transmitter tuning
(ZH) 无线电力发射器调谐
Abstract
(EN)
This disclosure provides systems, methods and apparatus for tuning a wireless power transmitter (1404). In one aspect an apparatus (1406) configured to wirelessly provide power to a load is provided. The apparatus (1406) includes a transmit circuit (1450) including a transmit coil (1414). The transmit circuit (1450) is configured to wirelessly provide power to the load. The transmit coil (1414) is configured to resonate at a resonant frequency. The transmit circuit (1450) has a reactance. The apparatus (1406) further includes a detection circuit (1480) configured to detect a change in the resonant frequency while providing power to the load. The apparatus (1406) further includes a tuning circuit (852) configured to adjust the reactance based on the change.

(ZH)

本发明提供用于调谐无线电力发射器(1404)的系统、方法和设备。在一个方面中,提供一种经配置而以无线方式提供电力到负载的设备(1406)。所述设备(1406)包含包括发射线圈(1414)的发射电路(1450)。所述发射电路(1450)经配置而以无线方式提供电力到所述负载。所述发射线圈(1414)经配置以在谐振频率下谐振。所述发射电路(1450)具有电抗。所述设备(1406)进一步包含检测电路(1480),所述检测电路(1480)经配置以在提供电力到所述负载的同时检测所述谐振频率的改变。所述设备(1406)进一步包含调谐电路(852),所述调谐电路(852)经配置以基于所述改变调整所述电抗。