CN103155355B - 无线充电方法和装置 - Google Patents
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- H—ELECTRICITY
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- H—ELECTRICITY
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Abstract
提供一种无线充电方法,包括同步至少两个充电电力供应设备的电力相位,以及使用所述至少两个充电电力供应设备对终端进行无线充电。
Description
技术领域
本发明一般涉及一种充电方法和装置,更具体地,涉及一种用于执行无线充电的方法和装置。
背景技术
诸如蜂窝电话或个人数字助理(PDA)的移动终端一般通过可再充电的电池来供电,该可再充电的电池通过来自分离的充电设备的电能来再充电。充电设备和电池具有它们自己的分离的外部接触端,并且通过机械地连接接触端来彼此电连接。
因为接触端向外突出,所以这种接触类型充电方案可能经常遭受由诸如湿气的外来物质的污染,造成不正确的电池充电。
为了解决这些和其它问题,最近已经开发出各种无线充电或非接触式充电技术,并且用于许多电子设备。
使用无线电力发送/接收的无线充电技术允许用户通过简单地将可再充电的电池放在充电板上而不将分离的充电连接器连接到具有可再充电的电池的移动终端来自动地对可再充电的电池进行充电。通常,使用无线充电技术的设备包括无线电动牙刷和无线电动刮胡刀。因为无线充电技术对电子产品进行无线充电,所以无线充电技术可以增加电子产品的防水特性,并且因为无线充电技术不需要有线充电器所以还可以增加电子设备的移动性。无线充电技术预期在电动车辆的增长时代中显著地发展。
这种无线充电技术包括使用线圈的电磁感应方案、使用谐振的谐振方案以及将电能转换成为微波并传送能量的射频(RF)/微波发射方案。
到目前为止,已经主要使用电磁感应方案。然而,随着在几十米距离处的无线地发送电力的许多实验最近已经成功,非常期待在不久的将来全部电子产品可以无线地充电而不需要电缆。
基于电磁感应的电力发送方法是在初级线圈和次级线圈之间传送电力的方案。基于当磁铁绕线圈运动时发生的感生电流的原理,在发射器中生成随时间变化的磁场并且根据在磁场方面的变化在接收器处感生电流,从而生成电能。这个现象称作磁感应,并且基于磁感应的电力发送方法具有出色的能量传递效率。
电磁感应方案已经应用于各种设备。被称为传统的无线充电技术的非接触式充电技术主要包括电磁感应方法,并且这种技术最初应用于诸如使用镍电池的电动刮胡刀和电动牙刷的产品。
就谐振方案而论,麻省理工学院(MIT)的Soljacic教授在2005年公开了可以使用基于被称为耦合模理论(CoupledModeTheory)的谐振方案的电力传输原理来无线地供应电力的***,即使它距离充电设备几米间隔。MIT团队公开的无线充电***使用的物理构思为:基于谐振理论,如果音叉谐振,则相邻的酒杯也在相同的振荡频率谐振。研究团队使得含有电能的电磁波谐振,而不使得音叉谐振。可知与电磁波不同,谐振电能不影响周围的机器和人类,因为谐振电能仅仅被直接传送到具有谐振频率的设备,并且它的未使用部分被再吸收为电磁波而不在空中传播。
RF/微波发射方案是新构思的电力发送方案,其将电能转换成为有益于它的无线发送的微波,并且传送它以用于能量供应。这种方案传送电能而不发送用于诸如无线电接收机和无线电话的无线通信设备的信号。当普通的通信***在载波上发送信号的时候,无线电力传输***仅发送载波。
存在对上述无线充电技术应用到无线通信设备的技术的需要,以及开发用于必要时使得供电/用电设备向其他设备提供充电电力的方法。
发明内容
技术问题
本发明的一方面解决至少以上问题和/或缺点并且提供至少下述优点。因此,本发明的实施例的方面提供一种方法和装置,其中多个充电电力供应设备可以向至少一个终端同时发送充电电力。
技术方案
根据本发明,提供一种无线充电方法,包括同步至少两个充电电力供应设备的电力相位,并且使用所述至少两个充电电力供应设备来对终端进行无线充电。
根据本发明,提供一种充电电力供应设备,包括:无线充电处理器,用于控制充电电力的供应;电力相位同步器,用于将电力相位与另一充电电力供应设备的电力相位同步;以及电力变换器,用于将从电源供应的电力转换成为将要供应给终端的无线电力。
根据本发明,提供一种无线充电方法,包括向充电电力供应设备传送无线充电请求,从充电电力供应设备接收对无线充电请求的响应,设置充电电力供应设备的电力相位同步模式,基于电力相位同步模式来同步充电电力供应设备的电力相位,以及允许充电电力供应设备执行无线充电。
根据本发明,提供一种移动终端,包括:无线充电处理器,用于设置至少一个充电电力供应设备的电力相位同步模式,向充电电力供应设备提供关于电力相位同步模式的信息,并且控制无线充电;以及无线电力接收器,用于接收从充电电力供应设备供应的无线电力,以及向电池供应接收到的无线电力。
有益效果
当多个充电电力供应设备向至少一个移动终端同时发送它们的充电电力时,根据本发明的无线充电方法和装置可以最小化功率损耗。
附图说明
从下面结合附图的描述,本发明的实施例的上述及其它方面、特征和优点将更加明显,其中:
图1A示出通过充电电力供应设备供应的电力;
图1B示出通过另一充电电力供应设备供应的电力;
图2示出图1A和图1B中示出的电力的总和;
图3示出根据本发明的实施例的包括充电电力供应设备的无线充电***的配置;
图4示出根据本发明的实施例的无线充电方法;
图5示出根据本发明的实施例的图4中的电力相位同步步骤402的示例;
图6示出根据本发明的实施例的图4中的电力相位同步步骤402的另一示例;
图7示出根据本发明的实施例的对移动终端无线充电的方法;
图8示出根据本发明的另一实施例的无线充电方法。
贯穿全部附图,相同的附图参考数字将被理解为指代相同的元件、特征和结构。
具体实施方式
下面参考附图详细描述本发明的实施例。在下面的描述中,诸如详细的配置和组件之类的细节仅仅是为了帮助全面理解本发明的实施例而提供的。因此,对本领域普通技术人员明显地是,可以在不脱离本发明的范围和精神的情况下,对这里描述的示范性实施例做出各种变化和修改。此外,为了清楚和简明起见,省略了公知的功能和结构的描述。
当多个充电电力供应设备向至少一个终端同时发送它们的充电电力时,通过多个充电电力供应设备发送的电力可能具有不同的相位特性,这急速地降低电力传输效率。具体地,假定第一充电电力供应设备和第二充电电力供应设备向单个移动终端同时发送它们的无线电力,并且通过第一充电电力供应设备供应的绝对电力被定义为A,它的相位被定义为x,通过第二充电电力供应设备供应的绝对电力被定义为B,并且它的相位被定义为x+。两个电力的总和可以如下面的数学图(1)中的发展。
数学图1
Asinx+Bsin(x+θ)=Asinx+B(sinxcosθ+conxsinθ)
=Asinx+Bcosθsinx+Bsinθcosx
=(A+Bcosθ)sinx+Bsinθcosx
如果cos被当做常数,则数学图(1)可以重写为下面的数学图(2)。
数学图2
在数学图(2)中,可以理解的是,通过第一充电电力供应设备和第二充电电力供应设备供应的电力的总和的最大值是A+B。
参照示出通过第一充电电力供应设备供应的电力的图1A,示出通过第二充电电力供应设备供应的电力的图1B,以及示出通过第一充电电力供应设备和第二充电电力供应设备供应的电力的总和的图2,虽然通过第一充电电力供应设备和第二充电电力供应设备供应的电力的最大值二者都是1,但是如果通过第一充电电力供应设备和第二充电电力供应设备供应的电力具有不同的相位,则接收移动终端接收具有比通过第一充电电力供应设备和第二充电电力供应设备供应的电力的最大值相对较小的值的电力。
因此,存在对最小化电力发送的损耗的需要,该损耗可能当多个充电电力供应设备向至少一个终端同时发送它们的充电电力时由电力相位之间的差引起。为此,根据本发明的充电电力供应方法和装置提供用于同步由多个充电电力供应设备发送的电力的相位的方法。
图3示出根据本发明的实施例的包括充电电力供应设备的无线充电***的配置。
图3中示出的无线充电***包括用于发送无线电力的第一充电电力供应设备310和第二充电电力供应设备320,以及用于接收无线电力的移动终端330。
第一充电电力供应设备310和第二充电电力供应设备320包括相同的组件,并且可以根据是否提供用于电力相位的基准信号来执行不同的操作。因此,为简单起见,将仅描述第一充电电力供应设备310的结构。然而,将描述的方式是第一充电电力供应设备310和第二充电电力供应设备320取决于是否提供用于电力相位的基准信号而操作。
第一充电电力供应设备310包括用于控制无线电力的发送的无线充电处理器311,具有由无线充电处理器311控制的操作、并且将输入电力转换成为无线电力并发送无线电力的电力变换器313,以及用于将它的电力相位与另一充电电力供应设备(例如,第二充电电力供应设备320)的电力相位同步的电力相位同步器315。
无线充电处理器311通过与移动终端330通信来从移动终端330接收用于请求无线电力发送的启动和/或结束的消息,并且控制电力变换器313和电力相位同步器315的操作。具体地,当从移动终端330接收用于请求无线电力发送的启动的消息时,无线充电处理器311请求电力变换器313和电力相位同步器315启动它们的操作,并且当接收用于请求无线电力发送的结束的消息时请求电力变换器313的操作的结束。
电力相位同步器315将电力相位与另一充电电力供应设备(例如,第二充电电力供应设备320)的电力相位同步。换句话说,电力相位同步器315首先确定它的用于无线电力供应的模式是否设置为主模式(mastermode)。如果它的模式设置为主模式,则电力相位同步器315请求电力变换器313发送无线电力。否则,如果它的模式没有设置为主模式,则电力相位同步器315确定另一充电电力供应设备是否存在于预定范围之内。如果另一充电电力供应设备存在于预定范围之内。在没有另一充电电力供应设备在预定范围之内的情况下,电力相位同步器315将用于无线电力供应的模式重新设置为主模式,当在预定范围之内存在另一充电电力供应设备的时候,电力相位同步器315将用于无线电力供应的模式设置为从模式(slavemode)。
如果用于无线电力供应的模式设置为从模式,则电力相位同步器315执行与另一充电电力供应设备的同步。具体地,电力相位同步器315从另一充电电力供应设备发送到移动终端330的无线电力信号检测无线电力的相位,并且控制从电力变换器313输出的电力的相位,用于与检测到的电力相位同步。
为了同步无线电力的相位,设置为从模式的电力相位同步器315从被发送到移动终端330的无线电力信号检测无线电力的相位。但是,本发明不限于此。例如,为了同步电力相位,设置为主模式的电力相位同步器315可以发送同步信号,并且设置为从模式的电力相位同步器315可以接收同步信号并且从同步信号检测无线电力的相位。
虽然无线充电处理器311从移动终端330接收用于请求无线电力发送的启动和/或结束的消息,但是无线充电处理器311还可以从用户接收用于请求无线电力发送的启动和/或结束的消息,并且管理接收到的(多个)消息。
移动终端330包括用于管理无线充电的启动和结束的无线充电处理器331,以及用于在无线充电处理器331的控制之下接收从(多个)充电电力供应设备供应的无线电力并且向电池335供应接收到的无线电力的无线电力接收器333。
具体地,无线充电处理器331在显示器上提供用于设置无线充电的启动和结束的接口,并且从用户接收无线充电的启动和结束。当从用户接收指示无线充电的启动的输入时,无线充电处理器331向充电电力供应设备传送用于请求无线电力发送的消息,并且向无线电力接收器333输入指示操作的启动的控制信号。类似地,当从用户或从电池335接收指示无线充电的结束的输入时,无线充电处理器331向充电电力供应设备传送用于无线电力发送的完成的消息,并且向无线电力接收器333输入指示操作的结束的控制信号。
无线充电处理器331从用户接收用于启动和结束无线充电的条件,例如,用于启动和结束无线充电所需的电池电量(batterylevel)的条件,用于启动和结束无线充电的时间的条件,以及用于启动和结束无线充电的位置的条件,并且确定移动终端330是否满足条件。例如,无线充电处理器331每隔一定时间检查电池335的电量以便确定移动终端330是否满足用于启动无线充电所需的电池电量的条件。
如果电池335的电量相对低于启动无线充电所需的电池电量,则无线充电处理器331向充电电力供应设备传送用于请求无线电力发送的消息,并且向无线电力接收器333输入指示无线电力发送操作的启动的控制信号。如果每隔一定时间检查的电池335的电量因为电池335的充电完成而相对高于预定电池电量,则无线充电处理器331向充电电力供应设备传送用于无线电力发送的完成的消息,并且向无线电力接收器333输入指示无线电力发送操作的结束的控制信号。无线充电处理器331可以检查用于启动和结束无线充电的时间的条件或用于启动和结束无线充电的位置的条件,以请求充电电力供应设备来启动和结束无线电力发送,并且可以发送用于控制无线电力接收器333的操作的启动和结束的控制信号。
在本发明中,假定第一充电电力供应设备310和第二充电电力供应设备320可以设置它们用于无线电力供应的模式。但是,本发明不限于此,并且移动终端330可以设置用于无线电力供应的模式,并且向第一充电电力供应设备310和第二充电电力供应设备320提供关于设置模式的信息。在这种情况下,移动终端330的无线充电处理器331传送用于请求无线电力发送的消息,然后,从第一充电电力供应设备310和第二充电电力供应设备320接收响应消息。基于响应消息,无线充电处理器331设置用于无线电力供应的模式,并且向第一充电电力供应设备310和第二充电电力供应设备320发送关于设置模式的信息。
现在将详细描述第一充电电力供应设备310和第二充电电力供应设备320以及移动终端330的操作。
如果用户在通过移动终端330的无线充电处理器331提供的接口上单击指示无线充电的启动的输入,或如果确定无线充电处理器331满足由用户预置的充电启动条件,则无线充电处理器331向存在于预定范围之内的第一充电电力供应设备310和第二充电电力供应设备320传送用于请求无线电力发送的消息,并且向无线电力接收器333输入指示操作的启动的控制信号。
在响应中,第一充电电力供应设备310的无线充电处理器311和第二充电电力供应设备320的无线充电处理器321接收用于请求无线电力发送的消息,并且执行无线电力发送。第一充电电力供应设备310的无线充电处理器311请求电力变换器313和电力相位同步器315启动它们的操作。电力变换器313等待输入电力的变换以用于无线电力发送。电力相位同步器315将它的电力相位与另一充电电力供应设备(例如,第二充电电力供应设备320)的电力相位同步。换句话说,当电力相位同步器315的用于无线电力供应的模式首先设置为主模式之时,电力相位同步器315向电力变换器313输入指示无线电力发送的控制信号。当接收控制信号时,等待输入电力的变换以用于无线电力发送的电力变换器313可以转换输入电力并且向移动终端330发送转换的输入电力。
第二充电电力供应设备320的无线充电处理器321请求电力变换器323和电力相位同步器325启动它们的操作。电力变换器323等待输入电力的变换以用于无线电力发送。当电力相位同步器325的用于无线电力供应的模式没有设置为主模式之时,电力相位同步器325确定另一充电电力供应设备是否存在于预定范围之内。电力相位同步器325将用于无线电力供应的模式设置为从模式,因为另一充电电力供应设备(即,第一充电电力供应设备310)存在于预定范围之内。电力相位同步器325从第一充电电力供应设备发送到移动终端330的无线电力信号检测无线电力的相位,并且控制电力变换器323的电力相位以使得从电力变换器323输出的电力的相位可以与检测到的电力相位同步。因此,电力变换器323可以向移动终端330发送具有与第一充电电力供应设备310的电力变换器313的相位相同相位的无线电力。
移动终端330的无线电力接收器333从第一充电电力供应设备310的电力变换器313和第二充电电力供应设备320的电力变换器323同时地接收无线电力,并且向电池335供应接收到的无线电力,在此期间新充电电力供应设备(未示出)可能请求电力供应。
具体地,包括在新充电电力供应设备中的无线充电处理器向用户提供接口,用户可以在该接口上选择电力供应,并且接收从用户请求的电力供应。在响应中,新的充电电力供应设备中的无线充电处理器指示电力变换器和电力相位同步器启动它们的操作。电力相位同步器将它的用于无线电力供应的模式设置为从模式,检测第一充电电力供应设备310的电力相位,并且将它的电力相位与检测到的电力相位同步。电力变换器向移动终端330发送具有检测到的电力相位的无线电力。
当完成电池335的充电时,电池335向无线充电处理器331或无线电力接收器333提供指示电池335的充电完成的信号。在响应中,无线充电处理器331向无线电力接收器333提供指示充电结束的控制信号,该无线电力接收器333然后结束它的操作。同时,无线充电处理器331向负责供应无线电力的电力供应设备的无线充电处理器传送指示无线电力发送的结束的消息,并且无线充电处理器结束它们的电力变换器的操作。
在第一充电电力供应设备310和第二充电电力供应设备320的以上描述的操作中,假定第二充电电力供应设备320的电力相位同步器325从第一充电电力供应设备310发送到移动终端330的无线电力信号检测无线电力的相位,以便将它的电力相位与第一充电电力供应设备310的电力相位同步。但是,本发明不限于此。在可替换方式中,第一充电电力供应设备310的电力相位同步器315可以向第二充电电力供应设备320的电力相位同步器325发送用于同步电力相位的同步信号,例如,包括用于电力相位的同步信息的信标信号,并且第二充电电力供应设备320的电力相位同步器325可以检查同步信号并且基于该同步信号同步它的电力相位。
图4示出根据本发明的实施例的通过充电电力供应设备的无线充电方法。
图4的无线充电方法包括在步骤401中从移动终端接收用于请求无线电力发送的消息,在步骤402中响应于请求来同步电力相位,并且在步骤403中基于同步的电力相位发送无线电力。无线充电方法还可以包括在步骤404中确定是否继续无线电力发送。具体地,在步骤404中确定是否从移动终端接收到充电完成消息,并且如果接收到充电完成消息,则无线电力供应结束并且无线电力不再发送。
在无线充电方法中,为了请求无线充电,移动终端向它周围的充电电力供应设备广播用于请求无线电力发送的消息,并且充电电力供应设备接收消息,该消息指示在接收无线电力请求的步骤401中的无线充电请求。
多个充电电力供应设备可以存在于移动终端周围,并且多个充电电力供应设备的每一个可以接收从移动终端发送的用于请求无线电力发送的消息。因此,多个充电电力供应设备可以向移动终端同时地发送它们的无线电力。然而,如果由多个充电电力供应设备同时地发送的无线电力在相位方面不同,则充电电力接收效率可能由于电力相位之间的差异而降低。为了解决这个问题,在步骤402中执行将从多个充电电力供应设备同时地发送的无线电力的相位同步的过程。
图5示出根据本发明的实施例的图4中的电力相位同步步骤402的示例,在其中充电电力供应设备同步无线电力的相位。
假定提供用于电力相位的基准信号的充电电力供应设备被设置为以主模式操作,并且检测另一充电电力供应设备的电力相位的充电电力供应设备被设置为以从模式操作。
如果确定充电电力供应设备被设置为以主模式操作(在步骤501中的是),则电力相位同步步骤结束。然而,如果充电电力供应设备没有被设置为以主模式操作(在步骤501中的否),在步骤502中确定另一充电电力供应设备是否存在于预定范围之内。如果另一充电电力供应设备不存在于预定范围之内(在步骤502中的否),则在步骤503中用于充电电力供应设备的无线电力供应的模式重新设置为主模式。如果另一充电电力供应设备存在于预定范围之内(在步骤502中的是),则在步骤504中用于无线电力供应的模式设置为从模式。
当用于无线电力供应的模式设置为从模式之时,在步骤505中处于从模式中的充电电力供应设备检测来自处于主模式中的充电电力供应设备的电力相位。例如,处于从模式中的充电电力供应设备从另一充电电力供应设备发送到移动终端的无线电力信号检测无线电力的相位。接下来,在步骤506中处于从模式中的充电电力供应设备控制它的输出电力的相位与检测到的电力相位同步。
图6示出根据本发明的实施例的图4中的电力相位同步步骤402的另一示例,在其中充电电力供应设备同步无线电力的相位。
除了处于主模式中的充电电力供应设备发送用于电力相位的同步的同步信号以及处于从模式中的充电电力供应设备基于同步信号从处于主模式中的充电电力供应设备输出的无线电力检查相位之外,图6中示出的电力相位同步步骤的另一示例等同于图5中的电力相位同步步骤。具体地,处于主模式中的充电电力供应设备还执行步骤602和步骤603,并且在步骤607中处于从模式中的充电电力供应设备基于同步信号检查无线电力的相位。
现在将详细描述根据本发明的实施例的电力相位同步步骤的另一示例。
如果确定充电电力供应设备被设置为以主模式操作(在步骤601中的是),则在步骤602中确定被设置为以从模式操作的充电电力供应设备是否存在于预定范围之内。在没有被设置为以从模式操作的充电电力供应设备的情况下,电力相位同步步骤结束。在存在被设置为以从模式操作的充电电力供应的情况下,被设置为以主模式操作的充电电力供应设备检查它的电力相位,并且在步骤603中向被设置为以从模式操作的充电电力供应设备发送包括检查的电力相位的电力相位同步信号。电力相位同步信号可以在信标信号上发送。
如果充电电力供应设备没有被设置为以主模式操作(在步骤601中的否),则在步骤604中确定另一充电电力供应设备是否存在于预定范围之内。如果另一充电电力供应设备不存在于预定范围之内(在步骤604中的否),则在步骤605中用于充电电力供应设备的无线电力供应的模式重新设置为主模式。如果另一充电电力供应设备存在于预定范围之内(在步骤604中的是),则在步骤606中用于无线电力供应的模式设置为从模式。
当用于无线电力供应的模式设置为从模式之时,在步骤607中处于从模式中的充电电力供应设备从处于主模式中的充电电力供应设备接收电力相位同步信号,并且检测包括在同步信号中的电力相位。在步骤608中处于从模式中的充电电力供应设备控制它的输出电力的相位与检测到的电力相位同步。
当移动终端和充电电力供应设备正在执行无线充电的时候,新充电电力供应设备可以向移动终端附加地请求供应无线电力。为此,当移动终端和充电电力供应设备正在执行无线充电的时候,充电电力供应设备可以在接收无线电力请求的步骤401中从用户接收无线充电请求。
多个充电电力供应设备可以存在于移动终端周围,并且可以向移动终端同时地提供它们的无线电力。为此,它们的无线电力的相位可以已经被同步。因此,为了新充电电力供应设备附加地向移动终端供应无线电力,在步骤402中新充电电力供应设备执行同步无线电力的相位的过程。具体地,新充电电力供应设备被设置为以从模式操作,并且如电力相位同步步骤的前一种示例中的那样,可以从处于主模式中的充电电力供应设备发送的电力中检测电力相位以及将它的电力相位与检测到的电力相位同步,或者如电力相位同步步骤的后一种示例中那样,可以请求并从处于主模式中的充电电力供应设备接收电力相位同步信号并且将它的电力相位与处于主模式中的充电电力供应设备的电力相位同步。
在步骤403中,充电电力供应设备执行向移动终端发送无线电力的过程,该移动终端正在被从另一充电电力供应设备供应无线电力。例如,充电电力供应设备可以执行如下过程:确定是否允许向移动终端的无线电力发送的过程,该移动终端正在被从另一充电电力供应设备供应无线电力;以及取决于是否允许无线电力发送的发送无线电力的过程。
图7示出根据本发明的实施例的通过移动终端的无线充电方法。
参照图7,在步骤701中移动终端传送用于请求无线电力发送的消息。换句话说,移动终端向它周围的充电电力供应设备广播用于请求无线电力的消息。例如,移动终端在显示器上提供用于允许用户设置无线充电的启动的接口,并且从用户接收指示无线充电的启动的输入。当从用户接收指示无线充电的启动的输入时,移动终端生成用于请求无线电力发送的消息并且向它周围的充电电力供应设备传送用于请求无线电力发送的消息。
在步骤702中,移动终端从充电电力供应设备接收无线电力并且利用接收到的无线电力为移动终端中的电池充电。
在步骤703中,移动终端确定无线电力接收是否完成。如果无线电力接收完成(在步骤703中的是),例如,当从用户接收无线充电的结束时,或当从电池接收指示无线充电完成的信号时,移动终端响应于来自用户的输入而生成用于请求无线电力发送的结束的消息,该消息指示无线电力发送的结束,并且在步骤704中向充电电力供应设备传送生成的用于请求无线电力发送的结束的消息。如果无线电力发送没有完成(在步骤703中的否),则在步骤702中移动终端重复无线电力接收。
移动终端可以通过接口从用户接收用于无线充电的启动和结束的条件。例如,移动终端可以接收如下条件:用于启动和结束无线充电所需的电池电量的条件,用于启动和结束无线充电的时间,以及用于启动和结束无线充电的位置的条件。
因此,在步骤701中,移动终端可以通过确定它是否满足用于无线充电的启动的条件来生成用于请求无线电力的消息,并且向它周围的充电电力供应设备传送用于请求无线电力发送的消息。例如,移动终端可以每隔一定时间检查电池电量以确定它是否满足用于启动无线充电所需的电池电量的条件,并且如果检查的电池电量相对低于启动无线充电所需的电池电量,则移动终端可以生成用于请求无线电力发送的消息并且向充电电力供应设备传送该消息。
移动终端可以通过在步骤703中确定它是否满足用于无线电力发送的结束的条件来确定无线电力接收是否完成。例如,移动终端可以每隔一定时间检查电池电量,并且如果当电池充电完成之时检查的电池电量相对较高于满电池电量,则移动终端可以确定无线电力接收已经完成。
当从至少一个充电电力供应设备接收无线电力并执行无线充电的时候,移动终端还可以从新充电电力供应设备接收无线电力。为此,在步骤702中,当从新充电电力供应设备接收请求以确定是否允许无线电力发送时,移动终端通过请求用户在显示器上输入(单击)允许/不允许图标并从用户接收对请求的响应来确定是否允许无线电力发送,或者取决于由用户预先设置的条件来确定是否允许无线电力发送。一旦确定是否允许无线电力发送,移动终端可以向新充电电力供应设备传送包括指示允许/不允许无线电力发送的信息的消息。如果允许无线电力发送,则移动终端可以从新充电电力供应设备接收无线电力。
图8示出根据本发明的另一实施例的无线充电方法。
参照图8,步骤801到步骤807表示由移动终端执行的过程,并且步骤851到步骤856表示由充电电力供应设备执行的过程。
在步骤中801,如在步骤701中那样,移动终端向它周围的充电电力供应设备传送用于请求无线电力发送的消息。换句话说,移动终端向它周围的充电电力供应设备广播用于请求无线电力的消息。例如,在移动终端生成用于请求无线电力发送的消息并且向它周围的充电电力供应设备传送用于请求无线电力发送的消息时,移动终端在显示器上提供用于允许用户设置无线充电的启动的接口,并且从用户接收指示无线充电启动的输入。
在响应中,在步骤851中至少一个充电电力供应设备从移动终端接收用于请求无线电力发送的消息。在步骤852中,充电电力供应设备对用于请求无线电力发送的消息生成响应消息,并且将它传送到移动终端。在步骤802中移动终端接收响应消息。因为多个充电电力供应设备可以存在于移动终端周围,所以在步骤802中移动终端可以从多个充电电力供应设备接收响应消息并且管理接收到的响应消息。
在步骤803中,移动终端基于响应消息确定至少一个充电电力供应设备的同步模式。例如,考虑无线信号的电力强度,移动终端可以将具有较高信号强度的充电电力供应设备的同步模式确定为主模式,并且将其他充电电力供应设备的同步模式确定为从模式。
在步骤804中,移动终端向每个充电电力供应设备发送关于步骤803中确定的模式的信息。例如,在步骤804中,移动终端向每个充电电力供应设备传送包括关于同步模式的信息的消息。包括关于同步模式的信息的消息还可以包括关于同步模式确定为主模式的充电电力供应设备的电力相位的信息。为此,充电电力供应设备在步骤852中传送的响应消息可以包括关于每个充电电力供应设备的电力相位的信息。
在步骤853中,至少一个充电电力供应设备从移动终端接收包括关于同步模式的信息的消息。在步骤854中,充电电力供应设备从包括关于同步模式的信息的消息检查同步模式,然后将通过移动终端确定的同步模式设置为它的同步模式。在步骤855中,充电电力供应设备将它的电力相位与处于主模式中的充电电力供应设备的电力相位同步。充电电力供应设备可以将它的电力相位与包括在消息中的电力相位同步,该消息包括关于同步模式的信息。
虽然充电电力供应设备将它的电力相位与包括在消息中的电力相位同步,该消息包括关于同步模式的信息,但是本发明不限于此,并且处于从模式中的充电电力供应设备可以从处于主模式中的充电电力供应设备请求关于电力相位的信息并且基于该消息同步它的电力相位,或者处于从模式中的充电电力供应设备可以从输出自处于主模式中的充电电力供应设备的信号检测关于电力相位的信息并且将它的电力相位与检测到的电力相位同步,如图4和图5中示出的方法那样。
在步骤856中,充电电力供应设备向移动终端发送它的无线电力。在响应中,在步骤805中,移动终端从充电电力供应设备接收无线电力并且利用接收到的无线电力对它的电池进行充电。在步骤806中,移动终端确定无线电力接收是否已经完成。如果无线电力接收已经完成(在步骤806中的是),例如,当从用户接收指示无线充电的结束的输入时,或者当从电池接收指示无线充电完成的信号时,移动终端响应于来自用户的、指示无线电力发送结束的输入生成用于请求无线电力发送的结束的消息,并且在步骤807中向充电电力供应设备传送生成的用于请求无线电力发送的结束的消息。如果无线电力接收没有完成(在步骤806中的否),则在步骤805中移动终端重复无线电力接收。
当在步骤857中从移动终端接收用于请求无线电力发送的结束的消息时,充电电力供应设备结束到移动终端的无线电力发送并且不再发送无线电力。
如从上面的描述清楚地,当多个充电电力供应设备向至少一个移动终端同时地发送它们的充电电力时,根据本发明的无线充电方法和装置可以最小化功率损耗。
尽管已经参考本发明的特定示范性的实施例和附图对本发明进行了示出和描述,但是本领域技术人员应当理解,在不脱离由所附权利要求和它们的等效物所定义的本发明的精神和范围的情况下,可以对本发明做出形式和细节上的各种修改。
Claims (19)
1.一种充电电力供应设备的无线充电方法,包括:
将所述充电电力供应设备的电力相位同步模式设置为第一模式和第二模式中的一个;
基于所述电力相位同步模式,同步所述充电电力供应设备的电力相位和另一充电电力供应设备的另一电力相位;以及
使用同步的电力相位对终端进行无线充电,
其中,在第一模式中,所述充电电力供应设备的电力相位是所述另一充电电力供应设备将所述另一电力相位与所述充电电力供应设备的电力相位同步的基准,以及
其中,在第二模式中,所述另一充电电力供应设备的另一电力相位被用作所述充电电力供应设备将所述电力相位与所述另一充电电力供应设备的另一电力相位同步的基准。
2.如权利要求1所述的无线充电方法,其中,在第一模式中,同步所述充电电力供应设备的电力相位和另一充电电力供应设备的另一电力相位包括向所述另一充电电力供应设备发送用于将所述另一电力相位与所述充电电力供应设备的电力相位同步的同步信号。
3.如权利要求1所述的无线充电方法,其中,在第二模式中,同步所述充电电力供应设备的电力相位和另一充电电力供应设备的另一电力相位包括:
向操作在第一模式中的所述另一充电电力供应设备请求用于将所述电力相位与所述另一充电电力供应设备的另一电力相位同步的同步信号;
从操作在第一模式中的所述另一充电电力供应设备接收所述同步信号;以及
基于所述同步信号,将所述电力相位与所述另一充电电力供应设备的另一电力相位同步。
4.如权利要求1所述的无线充电方法,还包括从终端接收无线充电请求。
5.如权利要求4所述的无线充电方法,还包括:
传送对来自终端的无线充电请求的响应;以及
从终端接收用于将所述充电电力供应设备的电力相位同步模式设置为第一模式和第二模式中的一个的信息。
6.如权利要求1所述的无线充电方法,其中,在第二模式中,同步所述充电电力供应设备的电力相位和另一充电电力供应设备的另一电力相位包括:
从操作在第一模式中的所述另一充电电力供应设备接收用于将所述电力相位与所述另一充电电力供应设备的另一电力相位同步的同步信号;以及
基于所述同步信号将所述充电电力供应设备的电力相位与所述另一充电电力供应设备的另一电力相位同步。
7.如权利要求1所述的无线充电方法,其中,在第二模式中,同步所述充电电力供应设备的电力相位和另一充电电力供应设备的另一电力相位包括:
从操作在第一模式中的所述另一充电电力供应设备向终端供应的充电电力中检测所述另一电力相位;以及
基于检测到的所述另一电力相位,将操作在第二模式中的充电电力供应设备的电力相位与所述另一充电电力供应设备的另一电力相位同步。
8.一种充电电力供应设备,包括:
无线充电处理器,用于控制充电电力的供应;
电力相位同步器,被配置为以第一模式和第二模式中的一个操作,以用于将所述充电电力供应设备的电力相位与另一充电电力供应设备的另一电力相位同步;以及
电力变换器,用于基于同步的电力相位,将从电源供应的电力转换成为将要供应给终端的无线电力,
其中,在第一模式中,所述充电电力供应设备的电力相位是所述另一充电电力供应设备将所述另一电力相位与所述充电电力供应设备的电力相位同步的基准,以及
其中,在第二模式中,所述另一充电电力供应设备的另一电力相位被用作所述电力相位同步器将所述电力相位与所述另一充电电力供应设备的另一电力相位同步的基准。
9.如权利要求8所述的充电电力供应设备,其中,在检测到所述另一充电电力供应设备以第一模式操作之后,所述电力相位同步器以第二模式操作。
10.如权利要求8所述的充电电力供应设备,其中,所述无线充电处理器发送对于来自终端的无线充电请求的响应,从终端接收关于由终端确定的电力相位同步模式的信息,并且基于接收到的信息来控制所述电力相位同步器以第一模式和第二模式中的一个操作。
11.如权利要求8所述的充电电力供应设备,其中,在第一模式中,所述电力相位同步器发送用于电力相位同步的同步信号。
12.如权利要求8所述的充电电力供应设备,其中,在第二模式中,所述电力相位同步器从处于第一模式中的所述另一充电电力供应设备接收同步信号,并且基于所述同步信号,将所述充电电力供应设备的电力相位与所述另一充电电力供应设备的另一电力相位同步。
13.如权利要求8所述的充电电力供应设备,其中,在第二模式中,所述电力相位同步器从处于第一模式中的所述另一充电电力供应设备向终端供应的充电电力中检测所述另一电力相位,并且基于检测到的另一电力相位,将处于第二模式中的充电电力供应设备的电力相位与所述另一充电电力供应设备的另一电力相位同步。
14.一种终端的无线充电方法,包括:
向充电电力供应设备传送无线充电请求;
从充电电力供应设备接收对该无线充电请求的响应;
将充电电力供应设备的电力相位同步模式设置为第一模式和第二模式中的一个;
基于电力相位同步模式,将所述充电电力供应设备的电力相位与另一充电电力供应设备的另一电力相位同步;以及
控制充电电力供应设备执行无线充电,
其中,在第一模式中,所述充电电力供应设备的电力相位是所述另一充电电力供应设备将所述另一电力相位与所述充电电力供应设备的电力相位同步的基准,以及
其中,在第二模式中,所述另一充电电力供应设备的另一电力相位被用作所述充电电力供应设备将所述电力相位与所述另一充电电力供应设备的另一电力相位同步的基准。
15.如权利要求14所述的无线充电方法,其中同步所述电力相位包括向充电电力供应设备发送关于电力相位同步模式的信息。
16.如权利要求14所述的无线充电方法,其中同步电力相位包括向处于第二模式中的所述充电电力供应设备发送关于操作在第一模式中的所述另一充电电力供应设备的另一电力相位的信息。
17.一种移动终端,包括:
无线充电处理器,用于将充电电力供应设备的电力相位同步模式设置为第一模式和第二模式中的一个,基于电力相位同步模式,将所述充电电力供应设备的电力相位与另一充电电力供应设备的另一电力相位同步,以及控制无线充电;以及
无线电力接收器,用于接收从充电电力供应设备供应的无线电力,以及向电池供应接收到的无线电力,
其中,在第一模式中,所述充电电力供应设备的电力相位是所述另一充电电力供应设备将所述另一电力相位与所述充电电力供应设备的电力相位同步的基准,以及
其中,在第二模式中,所述另一充电电力供应设备的另一电力相位被用作所述充电电力供应设备将所述电力相位与所述另一充电电力供应设备的另一电力相位同步的基准。
18.如权利要求17所述的移动终端,其中,所述无线充电处理器向所述充电电力供应设备发送关于所述电力相位同步模式的信息。
19.如权利要求17所述的移动终端,其中,所述无线充电处理器向操作在第二模式中的所述充电电力供应设备发送关于操作在第一模式中的所述另一充电电力供应设备的另一电力相位的信息。
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