CN104011962B - 诸如牙刷的投入式目标设备的充电线圈系统 - Google Patents
诸如牙刷的投入式目标设备的充电线圈系统 Download PDFInfo
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Abstract
一种用于充电具有可定位在充电容器(25)中的次级线圈(27)的至少一个目标设备(29)的系统和方法,所述充电容器(25)具有连接至电功率源的初级线圈(23),其中当目标设备定位在容器中时目标设备的次级线圈未精确对准初级线圈。多个操纵线圈(22‑22)布置在初级线圈周围。控制电路(24)按照所选次序改变操纵线圈相对于初级线圈的磁场相位的磁场相位模式,直到确定初级线圈和次级线圈之间的最大功率传输。利用最大功率传输的操纵线圈相位模式继续充电目标设备。
Description
技术领域
本发明大体涉及诸如电动牙刷的目标设备的充电系统,更具体地涉及目标设备和目标设备被定位到其中进行充电的杯状容器充电器的组合的特定充电系统。
背景技术
许多目标设备,例如电动牙刷而且以及其他设备,包括与具有初级线圈的充电底座组件和具有次级线圈的目标设备一起工作的感应式充电系统。这些系统通常要求充电底座和目标设备中的初级线圈和次级线圈分别紧密对准,如对直对准(1ined up inregistry),以实现高效充电和保护充电接口不受干扰。“投入式(drop in)”充电器系统允许用户简单地将目标设备投入容器,如可以用于饮用的玻璃杯,但因为缺乏紧密对准该系统是低效率的。通常,其中目标设备可能未紧密对准初级线圈的这种布置延长充电时间至少50%(如果没有更多的话)。因为当定位在杯状结构容器充电器中而不是目标设备所相对紧密地配合的传统充电器底座时次级线圈通常将相对于初级线圈成角度,所以会出现对准困难。这可以参考图1。
发明内容
因此,希望具有一种被布置和控制成为使用杯状容器作为充电器底座的那些充电系统提供最大效率的充电系统。
因此,用于利用容器充电器充电一个或多个目标设备的系统包括:用于接收一个或多个目标设备的容器充电器,容器的初级线圈可连接电功率源,至少一个目标设备可定位在容器中,目标设备具有次级线圈以致在工作中能量在初级线圈和次级线圈之间传输从而充电目标设备中的电池;布置在初级线圈周围的多个操纵线圈;以及用于控制操纵线圈相对于初级线圈的磁场的磁场相位的控制系统,以便于聚集初级线圈的磁场线从而优化容器充电器中的初级线圈和目标设备中的次级线圈之间的功率传输。
进一步,用于控制定位在容器中的至少一个目标设备的充电的方法,目标设备具有次级线圈和充电容器具有初级线圈,其中多个操纵线圈布置在初级线圈周围,该方法包括步骤:建立操纵线圈的磁场相对于初级线圈的磁场相位的初始相位状况模式;确定当操纵线圈处于其初始相位状况模式时在初级线圈和目标设备中的次级线圈之间的功率传输;重复改变操纵线圈的磁场相位状况模式直到确定在初级线圈和次级线圈之间产生最大功率传输的线圈相位模式;以及利用操纵线圈的最大功率传输相位模式充电次级线圈。
附图说明
图1和图2是示出具有杯状容器的现有技术初级线圈充电系统的立面图和顶视图。
图3和图4是示出本文中公开的充电系统的立面图和顶视图。
图5示出图3的利用多个目标设备的充电系统的立面图。
图6是示出用于控制单个目标设备的充电系统的行为的控制系统中的步骤的流程图。
图7是示出多个目标设备的控制系统中的步骤的流程图。
具体实施方式
图1和图2示出具有定位在底座杯状容器12中的初级线圈14的现有技术系统10。初级线圈通过电源线13和变频系统(未示出)(如果需要的话)连接传统电源。定位在容器12中用于充电的是目标设备16。目标设备可以例如是电动牙刷,其包括在其底部的次级线圈18。图1示出立面图中的初级线圈的磁场,而图2示出从顶视图观察的初级线圈磁场。在图1和图2的布置中,目标设备16放置在杯状容器12中,该杯状容器12被成形为也用作用户的饮水或其他液体(如漱口水)的杯子。使用该充电杯状容器,则不需要单独的玻璃杯。充电器和饮用玻璃杯的功能在一个单元中实现。
在典型的充电操作中,容器中的初级线圈14和次级线圈18之间存在能量传输,从而对目标设备中的可充电电池20进行充电。图1的布置的困难在于,初级线圈和次级线圈之间通常没有用于产生高效地充电的紧密对准。利用传统的充电器,目标设备垂直定位在相对受限的充电容器中,因此初级线圈和次级线圈固有地紧密对准。然而,使用图1的容器杯,次级线圈相对于初级线圈成角度地定位;该布置显著地延长充电时间,与普通充电时间相比较多达50%或更多。
图3和图4示出当前的充电装置,其包括包围初级线圈14的多个操纵线圈22-22。在一个实施例中,总共存在八个操纵线圈,但是线圈数量可以多于八个,或小于八个。典型的范围是2-32个操纵线圈。在所示的实施例中,操纵线圈均匀间隔开,尽管该布置不是必需的。操纵线圈由控制单元24单独地控制,以产生与初级线圈场同相或异相的操纵线圈磁场。一个或多个操纵线圈也可以处于断开状态。
图3示出具有与初级线圈场同相的磁场的七个操纵线圈22和具有与初级线圈场180°异相的磁场的一个操纵线圈22A。通常,大多数操纵线圈与初级线圈同相激励,而少数操纵线圈,通常为一个线圈,与初级线圈180°异相激励。多个操纵线圈场形成并且聚焦来自初级线圈的磁场线,以致它们更集中地朝着异相操纵线圈的方向。当导致对次级线圈进行充电的所获得的初级线圈的“被操纵的”场最紧密地与目标设备中的次级线圈的位置对准时,传输至次级线圈的功率将增加至最大范围,因而提高充电系统的效率,这通常提高至传统充电装置的效率。
在图3和图4中所示的操纵线圈的布置中,线圈直径是8mm,有70匝,尽管应当理解,线圈可以采用其他布置和结构。如上所述,操纵线圈的磁场改变容器25中初级线圈23的磁场模式,以致导致最大的能量传输至目标设备29中的次级线圈27中,并且因而产生最大充电系统效率。控制系统的功能是确定产生最大传输能量的操纵线圈的同相、异相模式。
在操作中,控制单元24包括控制回路软件电路,其中目标设备一般感测来自充电单元的磁场,测量所接收的磁场;确定功率和将接收的功率值发送回充电单元。控制单元反复调节操纵线圈的磁场的相位,以产生最大功率传输。在充电单元和目标设备之间的通信可以通过包括无线方式、光学方式或其他通信方式各种布置进行。获取最大功率传输是由控制单元通过在相对于初级线圈同相或异相之间切换各个操纵线圈的次序来实现,从而确定产生最大功率传输的特定磁场模式。通常,次序从所选的异相线圈开始,剩余线圈与初级线圈同相。异相线圈倾向于朝着其方向牵引磁场,而同相线圈倾向于推动磁场,因而聚焦初级线圈场。当已经确定最大功率传输时,控制电路停止其操作,目标设备的充电随着确定的模式继续。
图6示出用于充电单个目标设备的控制次序。目标设备首先放置在充电单元/容器中,如图6中的方框30所示。然后充电器以初始或默认配置激活磁场,从而以同相/异相的默认模式激励各个操纵线圈,例如一个操纵线圈异相,其他操纵线圈同相。这在方框32中示出。目标设备激活(如方框34中所示)并通过测量电压和电流然后计算功率来确定所接收的功率,如方框36中所示。然后目标设备在方框38中将确定的功率传送回充电单元(充电器)。然后充电器调节操纵线圈的磁场配置,即对同相模式、异相模式的操纵线圈进行充电,如方框42中所示。
然后目标设备在方框44中再次确定所接收的功率,并再次将值传送回充电器,如方框46中所示。关于是否已经测量足够数量的磁场配置从而正确地获得最大传输功率值做出决定,如决策方框48中所示。如果没有的话,充电器再次调节磁场配置,回路继续,直到来自方框48的输出是肯定的。然后,充电单元将操纵线圈磁场布置的磁场调节至传输最大功率的布置,如最后一个方框50中所示。利用该磁场模式继续充电目标设备,直到充电完成。
如上所述,各个操纵线圈的磁场的相位状况通常将与初级线圈同相或异相,或在某些情况中,一个或多个操纵线圈将断开。然而,在某些布置中,也可以使用同相或180°异相之间的相位状况。
本发明的优势是,可以利用包括具有次级线圈的目标设备的充电系统实现高效充电,其中次级线圈并未完美对准充电单元中的初级线圈,如图4中所示,该充电单元在该情况中为容器杯状充电器,。
现在参考图5,本发明可以与不只一个目标设备一起使用。图5示出两个目标设备60和62,其中次级线圈61和63定位在具有初级线圈65的充电器/容器64中。操纵线圈在67示出。操纵线圈包围初级线圈,如同在单个目标设备实施例中。在图7中所示的控制次序比一个目标设备而言多少更加复杂。图7与图6相似,具有相同的容器配置,但是具有第二目标设备。第一目标设备60放置在充电器中;充电器和目标设备激活,第一目标设备确定所接收的功率。然后在默认配置中的操纵线圈磁场的激活之后,第一目标设备开始将其ID和功率发送回充电器(在方框66)。在方框68,第二目标设备62和第一目标设备放置在充电器中。在方框70响应于从初级线圈65接收的功率值第二目标设备激活。第二目标设备在方框72与第一目标设备在方框74一起测量所接收的功率。在方框78第二目标设备将其自己的ID和接收的功率发送回充电器,以及在方框80将来自第一设备的功率发送回充电器。在方框82,关于对于两个目标设备而言是否已经测量足够数量的磁场模式/配置做出决策。一旦已经测量足够数量的配置,那么控制单元将操纵线圈磁场模式调节至最高优先杈的目标设备接收最大功率的配置,如方框86中所示。然后充电器继续以正常方式执行。如图7中90所代表性地示出的,还可以充电多于两个目标设备。
因此,已经公开一种在充电器是容器形式以致当目标设备放置在容器杯中用于充电时目标设备中的次级线圈未对准充电器中的初级线圈时高效地充电目标设备(如电动牙刷)的系统。
尽管为了说明起见,已经公开本发明的优选实施例,但是应当理解,在不偏离由权利要求所限定的本发明的精神的前提下可以在实施例中并入各种改变、修改、和替代。
Claims (14)
1.一种用于利用容器充电器对一个或多个目标设备进行充电的系统,所述系统包括:
容器充电器(25),用于接收一个或多个目标设备,所述容器在其中具有可连接至电功率源的初级线圈(23);
可定位在所述容器中的至少一个目标设备(29),所述目标设备具有次级线圈(27)以使得在工作中能量在所述初级线圈和所述次级线圈之间传输从而对所述目标设备中的电池进行充电;
多个操纵线圈(22-22),布置在所述初级线圈周围;以及
控制系统(24),用于控制所述操纵线圈相对于所述初级线圈的磁场的磁场相位以便于聚焦所述初级线圈的磁场线,从而优化在所述容器充电器中的所述初级线圈和所述目标设备的所述次级线圈之间的功率传输。
2.根据权利要求1所述的系统,其中,所述目标设备是电动牙刷。
3.根据权利要求1所述的系统,其中,所述容器是适用于包含供用户饮用的液体的杯子。
4.根据权利要求1所述的系统,其中,所述操纵线圈在所述初级线圈周围基本上均匀地间隔开。
5.根据权利要求1所述的系统,其中,所述操纵线圈的数量在2-32的范围内。
6.根据权利要求5所述的系统,其中,所述操纵线圈的数量是8个。
7.根据权利要求1所述的系统,其中,所述控制系统执行多个步骤(30,32,34,36,38,42,44,46,48,50),这些步骤包括响应于从所述目标设备接收的连续功率确定值重复地改变所述操纵线圈的磁场相位,从而确定产生最大功率传输的所述磁场相位模式。
8.根据权利要求1所述的系统,其中,所述控制系统根据预先确定的次序改变所述操纵线圈的磁场相位模式。
9.根据权利要求6所述的系统,其中,所述操纵线圈的所述磁场相位状况包括同相、异相和断开。
10.根据权利要求1所述的系统,其中,所述控制系统包括一系列步骤(66,68,70,72,74,78,80,82,86),这些步骤布置为调节从具有单独ID的多个目标设备所接收的功率值,并且确定在所述初级线圈和所述多个目标设备中的所选目标设备之间产生最大功率传输的磁场相位模式。
11.一种用于控制定位在容器中的至少一个目标设备的充电的方法,所述目标设备具有次级线圈,并且所述充电容器具有初级线圈,其中,多个操纵线圈布置在所述初级线圈周围,所述方法包括步骤:
建立相对于所述初级线圈的磁场相位的所述操纵线圈的磁场的初始相位状况模式(32);
激活所述目标设备(34);
确定当所述操纵线圈处于其初始相位状况模式时所述初级线圈和所述目标设备中的所述次级线圈之间的功率传输(36);
重复改变所述操纵线圈的所述磁场相位状况模式,直到确定在所述初级线圈和所述次级线圈之间产生最大功率传输的线圈相位模式(42,44,46,48);以及
利用所述操纵线圈的所述最大功率传输的相位模式对所述次级线圈进行充电(50)。
12.根据权利要求11所述的系统,其中,所述单独的操纵线圈的所述相位状况包括与所述初级线圈同相、与所述初级线圈异相和断开。
13.根据权利要求10所述的系统,其中,所述操纵线圈的所述相位模式根据预先选择的次序进行改变直到确定所述最大功率传输。
14.根据权利要求11所述的系统,其中,两个目标设备同时进行充电,并且其中在所述初级线圈和所述两个目标设备中的所选目标设备之间产生所述最大功率传输的相位模式的情况下继续对所述两个目标设备的充电(66,68,70,72,74,78,80,82,86)。
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