CN103094993A - 无线电力发送器及其电力传输方法 - Google Patents
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Abstract
本发明涉及无线电力发送器及其电力传输方法。公开一种无线电力发送器及其电力传输方法。无线电力发送器包括:多个传输谐振单元;检测电力施加单元,其将检测电力施加到传输谐振单元以检测无线电力接收器的位置;以及电流测量单元,其基于施加的检测电力测量从无线电力发送器的内部产生的电流。无线电力发送器基于测量的电流通过与无线电力接收器的位置相对应的至少一个传输谐振单元发送电力。
Description
技术领域
本公开涉及一种无线电力传输技术。更特别地,本公开涉及一种能够通过使用谐振现象有效地发送能量的无线电力发送器及其电力传输方法。
背景技术
无线电力传输或者无线能量传递指的是向所期望的装置无线地传递电能的技术。在19世纪,已经广泛地使用了采用电磁感应原理的电动机或者变压器,并且然后已经提出了用于通过辐射诸如无线电波或者激光的电磁波而发送电能的方法。实际上,在日常生活中频繁使用的电动牙刷或者电动剃刀是基于电磁感应原理而被充电的。直至现在,使用磁感应、谐振和短波长射频的长距离传输已经被用作无线能量传递方案。
在近来已经被瞩目的短程无线电力传输的情况下,以当用户在建筑物中使用诸如蜂窝电话或者笔记本电脑的移动终端时,即使该移动终端没有被连接到附加的电力电缆也能够对该移动终端连续地充电的方式,将无线电力发送器安装在该建筑物中。
然而,根据现有技术的无线电力传输技术,必须持续地发送电力,而与接收电力的无线电力接收器的存在无关,这引起电力的浪费和对人体的损害。
发明内容
本公开提供一种能够通过使用谐振现象发送能量的无线电力发送器及其方法。
另外,本公开提供一种能够检测无线电力接收器的位置的无线电力发送器及其方法。
此外,本公开提供一种能够通过与无线电力接收器的位置相对应的特定传输谐振单元发送能量的无线电力发送器及其方法。
根据实施例,提供一种用于通过使用谐振将电力无线地发送到无线电力接收器的无线电力发送器。该无线电力发送器包括:多个传输谐振单元;检测电力施加单元,该检测电力施加单元将检测电力施加到传输谐振单元以检测无线电力接收器的位置;以及电流测量单元,该电流测量单元基于施加的检测电力测量从无线电力发送器的内部产生的电流。无线电力发送器基于测量的电流而通过与无线电力接收器的位置相对应的至少一个传输谐振单元发送电力。
根据实施例,提供一种用于通过使用谐振将电力无线地发送到无线电力接收器的无线电力发送器的方法。该电力传输方法包括:将检测电力施加到多个传输谐振单元;基于检测电力测量从无线电力发送器的内部产生的电流;基于测量的电流确定与无线电力接收器的位置相对应的至少一个传输谐振单元;以及通过已经确定的至少一个传输谐振单元发送电力。
根据本公开的实施例,无线电力发送器通过与无线电力接收器的位置相对应的传输谐振单元来发送能量,从而提高电力传输效率。
另外,无线电力发送器通过特定传输谐振单元集中能量传输,从而能够防止浪费能量,并且能够减少对人体有害的磁场。
同时,在本公开的实施例的下面的描述中可以直接地或者间接地公开其它的各种效果。
附图说明
图1是示出根据本公开的一个实施例的无线电力传输系统的视图;
图2是示出根据本公开的一个实施例的传输线圈单元的等效电路的电路图;
图3是示出根据一个实施例的电源和发送单元的等效电路的电路图;
图4是示出根据本公开的一个实施例的接收谐振线圈、接收线圈单元、平滑电路、以及负载的等效电路的电路图;
图5是示出根据本公开的一个实施例的无线电力发送器的结构的视图;以及
图6是示出根据本公开的一个实施例的发送电力的方法的流程图。
具体实施方式
在下面的描述中,如果关于众所周知的功能或者配置的详细描述可能使本公开的主题不清楚,则将会省略该详细描述。另外,基于根据实施例的组件的功能来定义要描述的术语,并且该术语可以具有根据用户或者运营商和客户的意图而变化的意义。因此,该术语应基于贯穿本说明书的全部上下文来定义。
在下文中,将参考附图描述实施例。
图1是示出根据实施例的无线电力传输系统的视图。
参考图1,无线电力传输系统包括电源10、电力传输单元20、电力接收单元30、整流电路40以及负载50。
从电源10产生的电力被提供到电力传输单元20,从而电力传输单元20使用谐振将电力发送到电力接收单元30,该电力接收单元30与电力传输单元20谐振并且具有与电力传输单元20的相同的谐振频率值。被传递到电力接收单元30的电力经由整流电路40而被传递到负载50。负载50可以是电池或者需要电力的预定设备。
详细地,电源10是用于供应预定频率的AC电力的AC电源。
电力传输单元20包括传输线圈单元21和传输谐振线圈单元22。传输线圈单元21被连接到电源10,从而AC电流流过传输线圈单元21。当AC电流流过传输线圈单元21时,由于电磁感应,AC电流被感应到被从传输线圈单元21物理地隔开的传输谐振线圈单元22。使用谐振将被传递到传输谐振线圈单元22的电力发送到与电力传输单元20形成谐振电路的电力接收单元30。
根据使用谐振的电力传输,能够在彼此阻抗匹配的两个LC电路之间发送电力。与使用电磁感应的电力传输方案相比,使用谐振的电力传输方案能够以更高的电力传输效率更远地发送电力。
电力接收单元30包括接收谐振线圈单元31和接收线圈单元32。在接收谐振线圈单元31中接收从传输谐振线圈单元22发送的电力,从而AC电流过接收谐振线圈单元31。被发送到接收谐振线圈单元31的电力通过电磁感应而被传递到接收线圈单元32。被传递到接收线圈32的电力通过整流电路40而被传递到负载50。
图2是根据实施例的传输线圈单元21的等效电路图。如在图2中所示,传输线圈单元21可以包括电感器L1和电容器C1,并且形成具有适当的电感值和适当的电容值的电路。
电容器C1可以是固定电容器或者可变电容器。当电容器C1是可变电容器时,电力传输单元20可以为了阻抗匹配而控制可变电容器。同时,传输谐振线圈单元22、接收谐振线圈单元31、和接收线圈单元32的等效电路可以等同于在图2中描绘的电路。
图3是根据实施例的电源10和电力传输单元20的等效电路图。如在图3中所示,传输线圈单元21和传输谐振线圈单元22中的每一个可以分别包括具有预定的电感值和预定的电容值的电感器L1或者L2和电容器C1或者C2。
特别地,传输谐振线圈单元22的电容器C2可以是可变电容器,并且电力传输单元20可以调整可变电容器以调整用于谐振的谐振频率值。
图4是根据本公开的实施例的接收谐振线圈单元31、接收线圈单元32、整流电路40和负载50的等效电路图。如在图4中所示,传输谐振线圈单元31和接收线圈单元32中的每一个可以分别包括具有预定电感值和预定电容值的电感器L3或者L4和电容器C3或者C4。
整流电路单元40可以包括二极管D1和整流电容器C5,从而整流单元40将AC电力转换成要被输出的DC电力。虽然负载50由1.3V DC电源表示,但是负载50可以是电池或者需要DC电力的其它装置。
在下文中,将根据本公开的实施例描述用于通过与无线电力接收器的位置相对应的传输谐振单元发送能量的无线电力发送器100及其方法。
图5是示出根据本发明的一个实施例的无线电力发送器100的结构的视图。
参考图5,无线电力发送器100可以包括电源单元11、检测电力施加单元12、电流测量单元13、切换单元14、控制器15、多个传输谐振单元20以及衬垫(pad)25。根据实施例,传输谐振单元20可以以2D布置在衬垫25上。根据一个实施例,传输谐振单元20可以以2D布置在衬垫25上,从而传输谐振单元20可以具有矩阵的形式。
同时,如在图5中所示,每个传输谐振单元20可以对应于图1的电力传输单元,并且除了传输谐振单元20之外的剩余的组件可以被包括在图1的电源10中。
传输谐振单元20对应于多个谐振频率。传输谐振单元可以具有相同的谐振频率,或者可以具有不同的谐振频率。
另外,传输谐振单元20的一部分可以具有第一谐振频率,并且剩余的传输谐振单元20可以具有第二谐振频率。在该情况下,第一谐振频率可以不同于第二谐振频率。
衬垫25可以具有矩形,但是本公开不限于此。
如果无线电力接收器60位于衬垫25上,则无线电力发送器100可以通过在被放置于衬垫25上的传输谐振单元20中的特定传输谐振单元将能量发送到无线电力接收器60。在该情况下,无线电力接收器60可以包括参考图1描述的电力接收单元30、整流电路40、以及负载50,并且可以被安装在诸如便携式终端的电子设备中。
电源单元11产生具有用于能量传输用途的特定频率的AC电力,并且可以通过切换单元14将该AC电力发送到传输谐振单元20。
检测电力施加单元12可以产生用于检测无线电力接收器60的位置的检测电力并且将检测电力提供到切换单元14。根据一个实施例,检测电力可以是用于检测设置在衬垫25上的无线电力接收器60的微电力。在该情况下,如果传输谐振单元20具有相同的谐振频率,则检测电力可以是具有与谐振频率相同的频率的AC电力。
电流测量单元13通过施加的检测电力测量从无线电力发送器100产生的内部电流,并且测量的电流可以被供应到控制器15。在该情况下,控制器15可以基于测量的电流检测无线电力接收器60的位置。
在下文中,将会描述控制器15基于测量的电流检测无线电力接收器60的位置的原理。
在下面的描述中,假定被包括在每个传输谐振单元20中的传输谐振线圈单元22由于彼此并联地连接的电感器和电容器而具有自谐振频率f1,并且传输谐振单元20具有相同的自谐振频率f1。
如果具有谐振频率f1的检测电力被施加到各个传输谐振单元20,则因为各个传输谐振单元20的电容器和电感器以自谐振频率f1出现在开路状态(open state)下,使得阻抗最大化,因此在无线电力发送器100中测量的电流被最小化。
如果无线电力接收器60接近传输谐振单元20,则传输谐振单元的电感分量L1和无线电力接收器的电感分量L2彼此耦合,从而互感分量被定义为下述等式1。
等式1
在等式1中,k表示耦合系数,L1表示与无线电力接收器60的位置相对应的传输谐振单元20的自感,并且L2表示无线电力接收器60的自感。
在与无线电力接收器60的位置相对应的传输谐振单元20和无线电力接收器之间产生的互感分量M改变传输谐振单元20和无线电力接收器60的自谐振频率f1,并且改变的自谐振频率被称为互变谐振频率(mutual-change resonant frequency)f2。
换言之,如果无线电力接收器60位于特定传输谐振单元20上,则互变谐振频率f2可以指在特定传输谐振单元20和无线电力接收器60的互感分量之间改变的谐振频率。
与无线电力接收器60的位置相对应的传输谐振单元20的电感器和电容器在互变谐振频率f2下不具有最大的阻抗值。因此,如果将具有自谐振频率f1的检测电力施加到靠近无线电力接收器60的传输谐振单元20,则在无线电力发送器100中测量的电流增加。
另外,随着无线电力接收器60更近地接近特定传输谐振单元20,在无线电力发送器100中测量的电流或者互变谐振频率f2逐渐地增加。控制器15基于互变谐振频率f2或者电流的变化来确定无线电力接收器60是否接近特定传输谐振单元20。
为了将从检测电力施加单元12接收到的检测电力顺序地供应到传输谐振单元20,切换单元14执行切换操作。换言之,切换单元14根据控制器15的控制将检测电力顺序地供应到传输谐振单元20,从而能够检测无线电力接收器60的位置。
另外,切换单元14可以以将在电源单元11中产生的电力供应到特定传输谐振单元20的方式执行切换操作。换言之,切换单元14以将电力供应到与无线电力接收器60的位置相对应的传输谐振单元20并且不供应到剩余的传输谐振单元20的方式执行切换操作。
传输谐振单元20可以以格子或者矩阵的形式布置在衬垫25上。换言之,可以以将衬垫25的区域划分为多个均匀的区域的形式布置传输谐振单元20。
另外,传输谐振单元20具有相同的形状和相同的大小,但是本发明不限于此。同时,虽然根据本实施例以格子形式设置了总共12个传输谐振单元20,但是本公开不限于此。
另外,每个传输谐振单元20包括传输线圈单元21和传输谐振线圈单元22。
传输线圈单元21被连接到切换单元14,并且具有在其中流动的AC电流以产生磁场。另外,通过电磁感应现象,传输线圈单元21将磁场发送到与传输线圈单元21物理地隔开的传输谐振线圈单元22。
如果传输谐振线圈单元22从传输线圈单元21接收磁场,则AC电流被感应到传输谐振线圈单元22。另外,传输谐振线圈单元22通过谐振现象将被存储在其中的能量供应到无线电力接收器60。在该情况下,为了通过谐振的无线电力传输,传输谐振线圈单元22的自谐振频率必须与设置在无线电力接收器60中的接收谐振线圈单元(未示出)的自谐振频率相匹配。
传输谐振线圈单元22包括电容器22a,并且电容器22a可以是具有固定的电容的固定电容器或者具有可变的电容的可变电容器。
如果传输谐振线圈单元22的电容器22a是可变电容器,则控制器15可以通过改变传输谐振线圈单元22的电容器22a的电容来调整谐振频率。
例如,假定无线电力接收器60具有固定的自谐振频率,则无线电力发送器100可以调整传输谐振线圈单元22的可变电容器22a的电容以具有与无线电力接收器60的谐振频率相等的谐振频率。在该情况下,控制器15可以预先存储无线电力接收器60的谐振频率的信息。
同时,如果传输谐振线圈单元22的电容器22a是固定电容器,则电容器22a的电容可以被预设为传输谐振线圈单元22的谐振频率与无线电力接收器60的谐振频率相等的程度。
控制器15可以控制无线电力发送器100的总体操作。
控制器15可以执行控制操作以通过存在于衬垫25上的、与无线电力接收器60的位置相对应的特定传输谐振单元20将电力发送到无线电力接收器60。
例如,如在图5中所示,可以以具有三行和四列的3×4矩阵来布置传输谐振单元20,并且无线电力接收器60可以位于设置在第二行和第一列、第二行和第二列、第三行和第一列、以及第三行和第二列中的传输谐振单元20上。
在该情况下,控制器15控制切换单元14以仅通过设置在第二行和第一列、第二行和第二列、第三行和第一列、以及第三行和第二列的位置处的传输谐振单元20来将电力发送到无线电力接收器60。
另外,控制器15可以执行控制操作,从而仅通过设置在第二行和第二列的位置处的、与无线电力接收器60重叠最大的传输谐振单元20将电力发送到无线电力接收器60。
通过上述程序,无线电力发送器100能够通过与无线电力接收器60的位置相对应的传输谐振单元20将能量传输集中在该无线电力接收器60上。因此,可以防止不必要的电力消耗。
同时,控制器15可以以查找表的形式预先存储根据测量的电流的互变谐振频率。通过该查找表,控制器15能够基于来自电流测量单元13的检测电流来检测互变谐振频率f2,并且可以控制电源单元11使得电源单元11产生具有互变谐振频率f2的AC电力。
另外,控制器15顺序地控制传输谐振单元20,同时监测从电流测量单元13供应的电流的信息。另外,控制器15可以基于电流的信息来检测无线电力接收器60在衬垫25上的位置。
例如,控制器15通过控制切换单元14而将具有自谐振频率f1的检测电力施加到设置在第一行和第一列的位置处的传输谐振单元20。然后,如果从电流测量单元13接收电流的信息,则控制器15识别存在于设置在第一行和第一列的位置处的传输谐振单元20上的无线电力接收器60。
控制器15对各个传输谐振单元20顺序地执行上述程序以确定无线电力接收器60是否存在于衬垫25的相关传输谐振单元20所在的区域上。
另外,控制器15可以预先地设定阈值,以便在与传输谐振单元20相对应的区域中确定无线电力接收器所在的区域。如果无线电力接收器60位于多个区域上,则可以在遍布该区域设置的所有传输谐振单元20中检测电流的量的变化。
控制器15可以通过设定阈值来确定位于与无线电力接收器重叠最大的区域处的传输线圈单元。因此,控制器15可以仅在从电流测量单元13接收到的电流超过预设的阈值时确定无线电力接收器60位于相关的传输谐振单元20上。
如果已经完全地检测无线电力接收器60的位置,则控制器15通过与无线电力接收器60的位置相对应的传输谐振单元20来发送能量。换言之,控制器15通过控制切换单元14来将从电源单元11产生的AC电力供应到有关的传输谐振单元20。
无线电力发送器100通过电源单元11产生具有互变谐振频率f2的AC电力,以通过与无线电力接收器60的位置相对应的传输谐振单元20来发送能量。换言之,利用互变谐振频率f2替代自谐振频率f1来实现实际能量传输。在该情况下,控制器15可以控制电源单元11从而产生具有互变谐振频率f2的AC电力。
同时,虽然根据本实施例的无线电力发送器100通过电流的量的变化检测无线电力接收器60的位置,但是本公开不限于此。换言之,无线电力发送器100可以替代基于电流的量的变化的检测方案,而通过使用位于衬垫25上的压力传感器来检测无线电力接收器60的位置。
如上所述,根据本公开的实施例,无线电力发送器100通过存在于衬垫25上的、与无线电力接收器60的位置相对应的特定传输谐振单元20发送能量,从而提高到无线电力接收器60的能量传输效率。
图6是示出根据本公开的一个实施例的通过无线电力发送器100发送电力的方法的流程图。
在下文中,将通过参考图5的描述来描述根据本公开的一个实施例的通过无线电力发送器100发送电力的方法。
参考图6,无线电力发送器100将检测电力顺序地施加到多个传输谐振单元20(步骤S101)。根据一个实施例,无线电力发送器100控制切换单元14以将检测电力顺序地施加到传输谐振单元20。根据一个实施例,检测电力可以指的是具有与传输谐振单元20的自谐振频率f1相对应的频率的AC电力。
其后,无线电力发送器100基于该检测电力来测量内部电流(步骤S 103)。根据一个实施例,无线电力发送器100的内部电流可以是从电源单元11输出的电流,但是本公开不限于此。
被测量的电流可以根据传输谐振单元20的阻抗特性而变化。更详细地,如果将具有与谐振频率f1相对应的频率的检测电力施加到传输谐振单元20,无线电力发送器100的阻抗被极大地增加,从而使测量的电流最小化。如果将具有与谐振频率f1不同的频率的检测电力施加到传输谐振单元20,无线电力发送器100的阻抗被减少,从而使测量的电流增加。
其后,无线电力发送器100确定测量的电流是否超过阈值(步骤S105)。根据一个实施例,阈值可以指检测位于传输谐振单元20上的无线电力接收器所需的最小电流值。换言之,如果测量的电流等于或者大于阈值,则可以确定无线电力接收器60位于特定传输谐振单元20上。
如果测量的电流值等于或者大于阈值,则无线电力发送器100确定无线电力接收器60位于特定传输谐振单元20上(步骤S107)。换言之,如果无线电力接收器60位于特定传输谐振单元20上,则由于互感分量,与无线电力接收器60的位置相对应的传输谐振单元20的谐振频率被改变为互变谐振频率f2,这已经参考图5描述。另外,因为将具有与谐振频率f1不同的频率的检测电力施加到与无线电力接收器60的位置相对应的传输谐振单元20,所以测量的电流可以具有等于或者大于阈值的电流值。
其后,无线电力发送器100将与检测到的无线电力接收器60的位置相对应的传输谐振单元20确定为用于电力传输的传输谐振单元(步骤S109)。根据一个实施例,无线电力发送器100可以在传输谐振单元20中确定与无线电力接收器60的位置相对应的传输谐振单元20。例如,如在图5中所示,如果无线电力接收器60位于设置在第二行和第一列、第二行和第二列、第三行和第一列、以及第三行和第二列的位置处的传输谐振单元20上,则无线电力发送器100可以仅将设置在第二行和第一列、第二行和第二列、第三行和第一列、以及第三行和第二列的位置处的传输谐振单元20确定为用于向无线电力接收器60的电力传输的传输谐振单元20。
根据另一个实施例,无线电力发送器100可以仅将被设置在第二行和第二列的位置处的、与无线电力接收器60重叠最大的传输谐振单元20确定为用于电力传输的传输谐振单元20。
其后,无线电力发送器100通过确定的传输谐振单元20发送电力(步骤S111)。根据一个实施例,无线电力发送器100控制切换单元14以通过确定的传输谐振单元20将电力发送到无线电力接收器60。
如上所述,根据本公开的实施例,无线电力发送器100通过与无线电力接收器60的位置相对应的传输谐振单元20来发送能量,从而提高电力传输效率。
另外,无线电力发送器100通过特定传输谐振单元20来集中能量传输,从而减少能量消耗,并且减少对人体有害的磁场。
虽然已经参照其多个示例性实施例描述了实施例,但是应该理解,本领域的技术人员可以设计出许多将落入本公开的原理的精神和范围内的其它修改和实施例。更具体地,在本公开、附图、和所附权利要求书的范围内,主题组合布置的组成部件和/或布置方面的各种变化和修改都是可能的。除了组成部件和/或布置方面的变化和修改之外,对于本领域的技术人员来说,替代使用也将是显而易见的。
Claims (18)
1.一种用于通过使用谐振将电力无线地发送到无线电力接收器的无线电力发送器,所述无线电力发送器包括:
多个传输谐振单元;
检测电力施加单元,所述检测电力施加单元将检测电力施加到所述传输谐振单元以检测所述无线电力接收器的位置;以及
电流测量单元,所述电流测量单元基于施加的检测电力测量从所述无线电力发送器的内部产生的电流,
其中所述无线电力发送器基于测量的电流通过与所述无线电力接收器的位置相对应的至少一个传输谐振单元发送电力。
2.根据权利要求1所述的无线电力发送器,其中如果所述测量的电流具有等于或者大于阈值的值,则所述无线电力发送器确定与所述无线电力接收器的位置相对应的至少一个传输谐振单元,并且通过已经确定的所述至少一个传输谐振单元发送电力。
3.根据权利要求2所述的无线电力发送器,进一步包括电源单元,所述电源单元将AC电力发送到已经确定的所述至少一个传输谐振单元,所述AC电力具有通过在所述无线电力接收器和与所述无线电力接收器的位置相对应的所述至少一个传输谐振单元之间的互感分量而改变的互变谐振频率。
4.根据权利要求2所述的无线电力发送器,进一步包括切换单元,所述切换单元将从所述检测电力施加单元接收到的所述检测电力顺序地施加到所述传输谐振单元。
5.根据权利要求4所述的无线电力发送器,其中操作所述切换单元,从而通过已经确定的所述至少一个传输谐振单元来发送电力。
6.根据权利要求5所述的无线电力发送器,其中操作所述切换单元,从而仅通过在已经确定的所述至少一个传输谐振单元中的与所述无线电力接收器重叠最大的传输谐振单元来发送电力。
7.根据权利要求3所述的无线电力发送器,其中以查找表的形式预先存储与所述无线电力发送器的内部的电流相对应的互变谐振频率。
8.根据权利要求7所述的无线电力发送器,其中控制所述电源单元以产生具有与所述无线电力发送器的内部的电流相对应的互变谐振频率的AC电力。
9.根据权利要求2所述的无线电力发送器,其中所述阈值是检测所述无线电力接收器所需的最小电流值。
10.根据权利要求1所述的无线电力发送器,其中每个传输谐振单元包括传输线圈单元和传输谐振线圈单元。
11.根据权利要求1所述的无线电力发送器,进一步包括衬垫,在所述衬垫上设置有所述传输谐振单元,其中所述传输谐振单元以格子或者矩阵的形式布置。
12.一种用于通过使用谐振将电力无线地传输到无线电力接收器的无线电力发送器的电力传输方法;所述电力传输方法包括:
将检测电力施加到多个传输谐振单元;
基于所述检测电力测量从所述无线电力发送器的内部产生的电流;
基于测量的电流确定与所述无线电力接收器的位置相对应的至少一个传输谐振单元;以及
通过已经确定的所述至少一个传输谐振单元发送电力。
13.根据权利要求12所述的电力传输方法,其中如果所述测量的电流具有等于或者大于阈值的值,则实现基于所述测量的电流确定与所述无线电力接收器的位置相对应的所述至少一个传输谐振单元。
14.根据权利要求13所述的电力传输方法,其中通过已经确定的所述至少一个传输谐振单元发送电力包括将AC电力发送到已经确定的所述至少一个传输谐振单元,所述AC电力具有通过所述无线电力接收器和与所述无线电力接收器的位置相对应的所述至少一个传输谐振单元之间的互感分量而改变的互变谐振频率。
15.根据权利要求12所述的电力传输方法,其中将所述检测电力施加到所述传输谐振单元包括将所述检测电力顺序地施加到所述传输谐振单元。
16.根据权利要求12所述的电力传输方法,其中将所述检测电力施加到所述传输谐振单元包括仅通过在已经确定的所述至少一个传输谐振单元中的与所述无线电力接收器重叠最大的传输谐振单元发送电力。
17.根据权利要求12所述的电力传输方法,进一步包括以查找表的形式存储与所述无线电力发送器的内部的电流相对应的互变谐振频率。
18.根据权利要求17所述的电力传输方法,其中,通过已经确定的所述至少一个传输谐振单元发送电力包括发送具有与所述无线电力发送器的内部的电流相对应的互变谐振频率的AC电力。
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US20160233724A1 (en) | 2016-08-11 |
TWI637577B (zh) | 2018-10-01 |
JP2013099249A (ja) | 2013-05-20 |
TW201334344A (zh) | 2013-08-16 |
KR20130048438A (ko) | 2013-05-10 |
CN105162261B (zh) | 2019-06-18 |
US20130106197A1 (en) | 2013-05-02 |
CN105162261A (zh) | 2015-12-16 |
US10033224B2 (en) | 2018-07-24 |
CN103094993B (zh) | 2015-07-29 |
KR101349551B1 (ko) | 2014-01-08 |
TW201541792A (zh) | 2015-11-01 |
JP6306816B2 (ja) | 2018-04-04 |
TWI492474B (zh) | 2015-07-11 |
EP2590335A1 (en) | 2013-05-08 |
US10181756B2 (en) | 2019-01-15 |
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