CN105453377A - 具有选择性范围的无线电力传输 - Google Patents
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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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Abstract
本公开内容描述了一种基于袋形成的无线电力传输方法。该方法可以包括一个发射器和至少一个或更多个接收器,发射器是能量源并且接收器是期望充电或供电的设备。发射器可以识别并且定位连接有接收器的设备,并随后将能量袋指向该设备以便为设备供电。能量袋可以通过相长干涉和相消干涉来生成,该相长干涉和相消干涉可以创建零空间和能量袋点,零空间和能量袋点位于发射器的一个或多个半径中。这种特征可以通过选择性范围来使能无线电力传输,该选择性范围可以限制电子设备的操作区域和/或可以避免在某些区域、物体和人附近和/或上方形成能量袋。
Description
相关申请的交叉引用
本公开与2013年5月10日递交的名称为“MethodologyforPocket-Forming”(袋形成方法)的非临时专利申请第13/891,340号有关,其全部内容通过引用合并到本文中。
技术领域
本公开涉及电子发射器,更具体地涉及用于无线电力传输的发射器。
背景技术
诸如笔记本电脑、智能手机、便携式游戏设备、平板电脑之类的电子设备可能需要电力来执行它们的预期功能。这可能需要每天不得不为电子设备至少充电一次,或者高需求电子设备的情况下每天充电超过一次。这种活动可能是乏味的并且可能表现为用户的负担。例如,用户可能需要携带充电器以防用户的电子设备电量不足。此外,用户必须找到可用电源来连接。最后,用户必须插到墙上或者其他电源上以便能够为用户的电子设备充电。然而,这种活动可能使得电子设备在充电过程中无法操作。目前针对这一问题的解决方案可以包括感应垫,该感应垫可以采用磁感应或共振线圈。然而,这种解决方案可能仍然要求电子设备必须被放置在特定位置中来供电。因此,处于充电过程中的电子设备可能不便于携带。由于上述原因,存在对无线电力传输系统的需求,在该无线电力传输系统中,可以为电子设备供电而无需额外的充电器或插头,并且电子设备的移动性和便携性可以不受影响。
发明内容
本公开提供各种发射器装置,其可以用于使用诸如袋形成之类的合适技术的无线电力传输。发射器可以用来向可以包含接收器的电子设备发送射频(RF)信号。这种接收器可以将RF信号转换成适于为多个电子设备供电和充电的电力。无线电力传输使得能够在没有电线的情况下为多个电子设备供电和充电。
包括至少两个天线元件的发射器可以通过使用一个或更多个射频集成电路(RFIC,RadioFrequencyIntegratedCircuit)来生成RF信号,该一个或更多个射频集成电路可以由一个或多个微控制器来管理。发射器可以从电源接收功率,该电源可以给随后到RF信号的转换提供足够的电力。
具有选择性范围的无线电力传输可以被用于为位于各种范围内的各种点中的多个电子设备充电或供电,这种点可以被其中没有生成能量袋的零空间包围,因此,无线电力传输可以被用在不期望能量袋的应用中,这种应用可以包括对袋形成或者能量袋敏感的装置,以及不希望自己附近或者上方存在能量袋的人。此外,具有选择性范围的无线电力传输可以提高对接受充电或供电的设备的控制,这种控制可以应用于限制某些装置的操作区域,例如,展示手机、展示平板电脑以及可能要求在受限区域中工作的任何其他适当的设备。
附图说明
参照附图作以示例方式来描述本公开内容的非限制性实施例,这些附图是示意性的并且可能未按比例绘制。除非指出为代表背景技术,否则这些图代表本公开内容的各个方面。
图1示出了使用袋形成的无线电力传输示例情形。
图2示出了用于具有选择性范围的无线电力传输的波形,该波形可以统一成单个波形。
图3示出了具有选择性范围的无线电力传输,其中可以沿着以发射器为中心的不同半径生成多个能量袋。
图4示出了具有选择性范围的无线电力传输,其中可以沿着以发射器为中心的不同半径生成多个能量袋。
具体实施方式
“袋形成”(Pocket-forming)可以指生成在三维空间中会聚的两个或多个RF波,形成受控的相长干涉和相消干涉图样。
“能量袋(Pocketsofenergy)”可以指其中能量或功率可以以RF波的相长干涉图样的形式积聚的空间区域或范围。
“零空间”可以指其中由于RF波的相消干涉图样而没有形成能量袋的空间区域或范围。
“发射器”可以指包括芯片的设备,该芯片可生成两个或更多个RF信号,至少一个RF信号相对于其他RF信号被相移并且增益调整,基本上所有RF信号经过一个或多个RF天线,以使得聚焦的RF信号被送往目标。
“接收器”可以指包括至少一个天线元件、至少一个整流电路和至少一个功率转换器的设备,该设备可以利用能量袋来为电子设备充电或供电。
“自适应袋形成”可以指动态调整袋形成以调节一个或多个目标接收器上的功率。
在以下的详细描述中参考附图,这些附图构成详细描述的一部分。在未按尺寸或者未按比例绘制的附图中,除非上下文中另外指示,否则相似的符号通常标识相似的组件。在详细描述、附图和权利要求中描述的说明性实施例并非旨在限制。在不超出本公开内容的精神或范围的情况下可以使用其他实施例和/或可以进行其他变化。
图1示出了使用袋形成的无线电力传输100。发射器102可以发射可以在三维空间中会聚的受控的无线电RF波104。可以通过相位调整和/或相对幅度调整来控制这些射频(RF)波,以便形成相长干涉图样和相消干涉图样(袋形成)。可以在相长干涉图样处形成能量袋108并且该能量袋108可以是3维形状的,反之,可以在相消干涉图样处产生零空间。接收器106随后可以利用通过袋形成产生的能量袋108来为电子设备(例如笔记本电脑110)充电或供电,并且因此有效地提供无线电力传输。在其他情形下,可以存在多个发射器102和/或多个接收器106来同时为各种电子装置(例如,智能手机、平板电脑、音乐播放器、玩具等)供电。在其他实施例中,可以使用自适应袋形成来调节电子设备上的功率。
图2描绘了无线电力传输原理200,其中例如如图2A中所描绘的波形202和波形204两个波形可以导致如图2B所示的统一波形206。这种统一波形206可以由波形202与波形204之间的相长干涉图样和相消干涉图样来生成。
如图2A所示,可以分别在5.7千兆赫(GHz)和5.8GHz处生成诸如波形202和波形204之类具有略微不同频率的至少两个波形。通过使用诸如袋形成之类的合适技术来改变一个或两个频率上的相位,相长干涉图样和相消干涉图样可以导致统一波形206。统一波形206可以对沿着袋形成的能量袋108和零空间进行描述,这种能量袋108可以在存在相长干涉的确定区域中获得;这种区域可以包括一个或多个点,该一个或多个点可沿袋形成轨迹移动并且可以包含在无线电力范围208X1中。无线电力范围208X1可以包括无线电力传输100的最小范围和最大范围,无线电力范围208X1可以从几厘米到超过几百米。此外,统一波形206可以包括多个零空间,这些零空间可在存在相消干涉的确定区域中获得,这种区域可以包括一个或多个零空间,该一个或多个零空间可沿袋形成轨迹移动并且可以包含在无线电力范围210X2中。无线电力范围210X2可以包括无线电力传输100的最小范围和最大范围,无线电力范围210X2可以从几厘米到超过几百米。
图3描绘了具有选择性范围300的无线电力传输,其中发射器302可以为多个接收器308产生袋形成。发射器302可以通过具有选择性范围300的无线电力传输来生成袋形成,选择性范围300可以包括一个或多个无线充电半径304以及一个或多个零空间半径306。在无线充电半径304中可以为多个电子设备充电或供电。因此,可以创建多个能量点,这种点可以被采用以使得能够限制电子设备的供电和充电,这种限制可以包括:在包含在无线充电半径304中的特定或受限点中操作特定电子设备。此外,通过使用具有选择性范围300的无线电力传输,可以实现安全限制,这种安全限制可以避免在其中需要避免能量的区域或区带之上的能量袋108,这种区域可以包括下述区域,这些区域包括对能量袋108敏感的装置和/或不希望自身上方和/或附近存在能量袋108的人。
图4描绘了具有选择性范围400的无线电力传输,其中发射器402可以为多个接收器406产生袋形成。发射器402可以通过具有选择性范围400的无线电力传输来生成袋形成,选择性范围400可以包括一个或多个无线充电点404。可以在无线充电点404中为多个电子设备充电或供电。可以在多个接收器406上方产生能量袋108而忽略它们周围的障碍物408,可以产生这样的效果是因为在存在障碍物408的区带或区域中可以生成相消干涉。因此,可以通过无线充电点404中的相长干涉来生成能量袋108。通过追踪接收器406并且通过由尤其诸如有蓝牙技术、红外通信、WI-FI、调频无线电之类的各种通信系统使能多个通信协议可以进行能量袋108的定位。
尽管本申请已经公开了各个方面和实施例,但可以设想其他方面和实施例。本文中公开的各个方面和实施例是出于说明的目的而并非旨在限制,本发明的真实范围和精神由所附的权利要求来给出。
Claims (21)
1.一种用于以选择性范围对便携式电子设备进行供电的无线电力传输方法,包括:
发射器通过连接到所述发射器上的天线来生成袋形成的RF波;
以所生成的RF波的相长干涉图样的形式在空间区域中积聚能量袋;以及
采用选择性范围来为处于被不具有所积聚的能量袋的零空间围绕的、且具有所积聚的能量袋的预定的各个点中的所述电子设备充电或供电。
2.根据权利要求1所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输方法,还包括接收器拦截空间区域中所积聚的能量袋的方法,所述接收器具有连接到所述便携式电子设备上的RF天线。
3.根据权利要求2所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输方法,还包括对所积聚的能量袋中的所述RF波进行整流并且将经整流的RF波转换为用于为所述便携式电子设备充电或供电的恒定DC电压的方法。
4.根据权利要求1所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输方法,还包括实施自适应功率聚焦以避免障碍物干扰所述接收器与所述发射器之间的RF信号,从而对为所述便携式电子设备提供充电或供电的两个或更多个接收器进行调节。
5.根据权利要求1所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输方法,其中,所述零空间是以所生成的RF波的相消干涉图样的形式生成的,并且所述零空间被分布在围绕所述各个点的预定选择区带中。
6.根据权利要求1所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输方法,其中,所述采用选择性范围通过对某些便携式电子设备的操作区域进行限制来消除敏感区域中的能量袋,从而提高对接受充电的电子设备的控制,所述敏感区域包括受能量袋影响的人或其他装置。
7.一种用于以选择性范围对便携式电子设备进行供电的无线电力传输系统,包括:
发射器,所述发射器用于通过连接到所述发射器上的天线来生成袋形成的至少两个RF波;
微控制器,其位于所述发射器内,所述微控制器用于对所述袋形成的所述至少两个RF波进行控制以所生成的RF波的相长干涉图样的形式在空间区域中积聚能量袋;以及
选择性范围,所述选择性范围用于为在空间区域内处于被不具有所积聚的能量袋的零空间围绕的、且具有所积聚的能量袋的预定的各个点中的所述电子设备充电或供电。
8.根据权利要求7所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输系统,其中,所述微控制器对袋形成中的一个或多个RF波上的相位进行改变,相长干涉图样和相消干涉图样导致在用于为所述电子设备充电的预定的各个点中形成统一波形。
9.根据权利要求8所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输系统,其中,所述统一波形限定了能量袋和伴随袋形成的零空间,由此所述能量袋在存在相长干涉的某些预定的空间区域中是可获得的,从而限定了用于响应于所述微控制器内的程序来为遍布于最小选择范围或最大选择范围内的所述电子设备充电的一个或多个热点。
10.根据权利要求8所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输系统,其中,所述统一波形由具有略微不同频率的至少两个RF波组成,所述至少两个RF波在一个或两个频率上的相移形成从几厘米到超过几百米的无线电力范围。
11.根据权利要求6所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输系统,其中,所述发射器为多个接收器提供袋形成,所述袋形成包括被一个或多个零空间半径围绕的一个或多个无线充电半径,以生成能够对电子设备的供电和充电进行限制的点。
12.一种用于以选择性范围对便携式电子设备进行供电的无线电力传输系统,包括:
发射器,所述发射器用于生成至少两个RF波和短RF控制信号,所述发射器具有至少两个RF天线以通过所述天线发射至少两个RF波,所述至少两个RF波在3维空间中会聚,从而以RF波的相长干涉图样的形式积聚成能量袋;
微控制器,其位于所述发射器内,所述微控制器用于控制所述RF波的相长干涉图样以在3维空间中的预定区域或范围中积聚能量袋,并且用于控制所述RF波的相消干涉图样以形成围绕所述能量袋的零空间;以及
其中,所述RF波的所述相长干涉图样形成用于为便携式电子设备充电的具有预定选择范围的充电热点,并且其中,所述RF波的所述相消干涉图样形成围绕所述充电点而不存在充电能量的具有预定选择范围的零点。
13.根据权利要求12所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输系统,其中,所述热点包括一个或多个无线充电半径以及一个或多个零空间半径,由此所述热点被创建为能够限制所述电子设备的供电和充电。
14.根据权利要求13所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输系统,其中,充电点的选择范围提供了安全限制以消除避免存在能量的区域或区带上的能量袋,从而保护3维空间中预定的指定区域内的敏感装置或人。
15.根据权利要求12所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输系统,还包括连接到所述便携式电子设备上的接收器,所述接收器具有微控制器来与所述发射器的微控制器通信,从而在针对所述发射器的预定选择范围在多个接收器之上生成无线充电点而忽略所述多个接收器周围的障碍物。
16.根据权利要求12所述的用于对便携式电子设备进行供电的无线电力传输中的多个袋形成系统,其中,所述天线通常以900MHZ、2.4GHz、5.7GHz的预定频率来工作以发射至少两个RF波形,从而针对充电热点和零空间点的预选择范围创建统一波形。
17.根据权利要求15所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输系统,其中,用于所述发射器的微控制器和所述接收器的微控制器通过使能多个标准无线通信协议来定位、追踪或者指向热点的预选择范围中的能量袋,所述多个标准无线通信协议包括蓝牙、Wi-Fi、FM或者Zigbee。
18.根据权利要求13所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输系统,其中,所述天线通常以900MHZ、2.4GHz或者5.7GHz的频带来工作。
19.根据权利要求15所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输系统,其中,所述发射器的微控制器和所述接收器的微控制器对预选择范围中的袋形成进行动态调整以调节一个或多个目标接收器上的功率。
20.根据权利要求15所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输系统,其中,所述接收器的微控制器与所述发射器的微控制器进行通信以改变一个或多个RF波上的频率和相位来形成对能量袋和伴随袋形成的零空间进行描述的统一波形,其中,能量袋在存在波的相长干涉的某些预定区域中是可获得的,并且这种区域包括一个或多个点,所述一个或多个点沿袋形成轨迹移动并且包含在包括无线电力传输的最小范围或最大范围的无线电力范围内。
21.根据权利要求15所述的用于以选择性范围对便携式电子设备进行供电的无线电力传输系统,其中,所述电子设备是在每个电子设备的选择范围和受限位置上被同时供电的各种电子装置、智能电话、平板电脑、音乐播放器、计算机、玩具等。
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Also Published As
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US10148133B2 (en) | 2018-12-04 |
WO2014209586A1 (en) | 2014-12-31 |
EP3031123A4 (en) | 2016-08-24 |
US20170170665A9 (en) | 2017-06-15 |
US9124125B2 (en) | 2015-09-01 |
EP3031123B1 (en) | 2020-02-12 |
US20140375255A1 (en) | 2014-12-25 |
US20160020616A1 (en) | 2016-01-21 |
EP3031123A1 (en) | 2016-06-15 |
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