CN107705967A - 无线可充电电池及其部件 - Google Patents
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Abstract
一种用于无线可充电电池的接收器线圈组件,包括横向的第一线圈和横向的第二线圈,以及包围第一线圈和第二线圈的第三线圈。接收器线圈可以用于无线可充电电池的电能接收器中。也公开了一种无线可充电电池,其具有从电化学电池上可拆卸的电能接收器。
Description
本申请是申请日为2012年9月24日、于2014年3月27日进入中华人民共和国国家阶段的申请号为CN 201280047175.7、发明名称为“无线可充电电池及其部件”的中国发明专利申请的分案申请。
技术领域
本发明涉及无线可充电的电池。更具体地,但不是唯一地,本发明涉及接收器线圈拓扑结构、电池屏蔽和可拆卸的电能接收器。
背景技术
无线可充电电池已经被用于诸如电动牙刷之类的设备多年。这种设备典型地利用非标准的电池或不易于替换的电池。普通消费电池仍通常需要电连接来实现充电。存在对如下这种消费可充电电池的需求:其如果被设置在充电区域,可以方便地无线充电,而不需要任何特殊取向或电连接。
电能接收器需要尽可能小,以确保用于通常消费应用的足够的电池容量。也需要能够在任何朝向与充电交变磁场耦合—由于电池可以采用任何朝向放置在充电区域中,或者可以采用任何朝向位于设备内部。
也需要电池能快速地充电,而在充电磁场中电化学电池不过热。
另外,电池的电能接收器由消费者可回收或可重复使用将是值得期待的。
接收器线圈拓扑结构的数目已经被提出并且讨论如下。
WO 2001/67046公开一种无线电能接收器,其具有缠绕在交叉形状的芯体上的三个相互正交的绕组(即,芯体是XYZ坐标系的原点的形状)。
US 5,281,941公开了一种用于支持三个相互正交的绕组的球形形式。
US 7,414,380公开了一种具有缠绕在平行管形状的芯体上的三个相互正交的绕组的无线电能接收器。
US 7,248,017公开了一种无线可充电电池,其具有缠绕在电池外部的芯体上、或者缠绕在芯体上并安装在电池内部的绕组。绕组的轴与电池的纵轴平行。说明书也公开了具有两个正交绕组以当充电时供电池自由旋转。
US 2011/0086256公开了一种无线可充电电池,其具有布置在电池的一个端部的接收器电路,但是绕组在电池的外部上。
以上拓扑结构都有点笨重和/或在某些朝向上耦合不佳。另外,以上设计被形成为一体,并且不允许简单地再利用。另外,它们未提供电化学电池的屏蔽。
本发明的目标是提供一种线圈接收器组件、电能接收器和无线可充电电池,克服了这些问题中的至少一些,或者至少向公众提供一种有用的选择。
发明内容
根据一个示例性实施例,提供了一种用于可充电电池的接收器线圈组件,包括:第一线圈和第二线圈,具有彼此横向定向的磁轴;以及第三线圈,其具有横向于第一线圈和第二线圈的磁轴的磁轴,并且围绕第一线圈和第二线圈。
第三线圈优选地是大体环形线圈,并且组件优选具有通常的圆柱形形式。
第一线圈和第二线圈优选地以交叉体布置,其中第一线圈和第二线圈围绕交叉体的臂缠绕、并且第三线圈围绕该交叉体缠绕。
根据另一个示例性实施例,提供了一种用于可充电电池的接收器线圈组件,包括具有彼此横向定向的磁轴的第一线圈、第二线圈和第三线圈,其中,线圈中的一个相比于其他线圈能够具有较大的电能传输。
第三线圈优选地包围其他线圈,并且第一线圈和第二线圈优选地采用交叉布置。
第三线圈的电能传输容量优选地大于第一线圈和第二线圈的功率电能传输容量至少10%、更优选地20%。第三线圈的导体长度优选地大于第一线圈和第二线圈的导体长度至少25%、更优选地50%。
根据另一个示例性实施例,提供了一种无线可充电电池,其具有电能接收器和电化学电池,其中,电能接收器安装在第一电池子外壳中,而电化学电池安装在第二电池子外壳中,其中,第一电池子外壳和第二电池子外壳是可拆卸的。
电能接收器可以凭借螺纹、推入配合连接或磁连接而是从电化学电池上用户可拆卸的。
电化学电池可以通过围绕电化学电池的金属层来被磁屏蔽。这个层可以是大约一个趋肤(skin)深度,并且可以由铜箔形成。
公认的是,术语“包括”在不同的审查权限范围下可以归结为排他的或包括的意思。针对本说明书的目的,并且除非另有说明,这些术语旨在具有包括的含义,即这些术语将用于包括直接引用的所列出的部件,而且还包括其他的未指定的部件或元件。
本说明书中参考的任何现有技术不构成承认这些现有技术形成公知常识的一部分。
附图说明
被并入并构成说明书的部分的附图,与上面给出的本发明的一般描述一起说明本发明的实施例,以及以下给出的示例性实施例的详细描述用来解释本发明的原理。
图1示出一种无线可充电电池;
图2示出图1中所示的电池的电能接收器线圈组件;以及
图3示出图1中所示的电池的电能接收器的示意图。
具体实施方式
图1示出具有两部分结构的无线可充电电池。电能接收器安装在第一电池子外壳2内,并且能够从安装有可充电电化学电池的第二电池子外壳3拆卸。第一电池子外壳2和第二电池子外壳3可以通过螺纹、推入配合连接、或磁耦合等相互连接,以使得用户能够将子外壳2从子外壳3拆离、并且将去除的子壳体2连接至含新的电化学电池的新的子外壳。
电化学电池可以被磁屏蔽,以避免当电池位于充电交变磁场中时过热。这可以通过提供围绕电化学电池的金属屏蔽来实现。这可以采用被施加围绕子外壳3的外部的金属箔的形式。金属箔可以具有大约一个趋肤深度,其中铜因其令人满意的屏蔽属性而令人期待。
现在参见图2,示出根据一个实施例的接收器线圈组件。第一绕组4a和4b围绕交叉形铁氧体磁芯6的臂缠绕,而第二绕组5a和5b围绕交叉形铁氧体磁芯6的另一臂缠绕。第三绕组7围绕交叉形铁氧体磁芯6的周边缠绕。理想地线圈是彼此正交的,以保证在任何朝向与充电磁场耦合。然而,在某些应用下,线圈因特定应用的空间限制或优先耦合方向而可以不是正交的。
第三线圈优选环形,以便与圆柱形电池外壳最好地相合。第三线圈可以被设计成比其他的线圈具有更大的电能传输容量。这对于以下情况是令人期待的:电池具有正常的或优选的朝向使得第三线圈通常以最快的速率供应电能,而第一线圈和第二线圈仍允许在其他朝向的电能传输。第三线圈的电能传输容量可以大于第一线圈和第二线圈至少10%,优选地20%。为了实现此,第三线圈的导体长度可以大于第一线圈和第二线圈的导体长度至少25%,优选地50%。
在一个示例性实施例中,外线圈的平均直径是12mm,并且具有50匝,而第一绕组和第二绕组的平均直径大约是4mm,并且每个具有80匝。绕组可以都是0.05mm规格绝缘铜导线。
图3示出电池的部件的示意图。线圈4(4a和4b)、5(5a和5b)以及7中感应的电流被供应至接收器电路8,接收器电路8可以对从线圈接收的交流电整流并限制。电池充电管理电路9根据用于所用的电池的化学类型的充电参数来控制给予可充电电池10的电能供应。电能接收器由线圈4、5和7以及接收器电路8和电池充电管理电路9组成,并且被包括在子外壳2中。可充电电池10被安装在子外壳3中。
所述的无线可充电电池提供一种紧凑设计,其确保在所有方向上充分耦合的同时在优选朝向上提供增强的耦合。可拆卸的两部分电池结构允许容易再利用电能接收器,避免浪费和不利的环境影响。屏蔽电化学电池避免了过热、并且允许快速充电。
尽管已经通过本发明的实施例的描述说明了本发明,并且尽管已经详细地描述的实施例,但是本申请的目的并非限制于或以任何方式限制在所附权利要求的范围到这样的细节。另外的优点和修改将容易地呈现于本领域技术人员。因此,本发明在其更为宽广的方面不限于特定细节、代表性的装置和方法、以及所示和描述的说明性实例。因此,在不脱离本申请的一般发明理念的精神或范围的情况下可以对脱离这些细节。
Claims (15)
1.一种用于可充电电池的接收器线圈组件,包括:
a.第一线圈和第二线圈,具有彼此横向定向的磁轴;以及
b.第三线圈,具有横向于所述第一线圈和所述第二线圈的所述磁轴的磁轴,并且包围所述第一线圈和所述第二线圈。
2.如权利要求1所述的接收器线圈组件,其中,所述第三线圈是大体环形线圈。
3.如权利要求1或权利要求2所述的接收器线圈组件,其中,所述第一线圈和所述第二线圈交叉式布置。
4.如前述权利要求中的任意一项所述的接收器线圈组件,包括位于所有的线圈内的铁氧体磁芯。
5.如权利要求4所述的接收器线圈组件,其中,所述铁氧体磁芯采用交叉体的形式,其中所述第一线圈和所述第二线圈围绕所述交叉体的臂缠绕、并且所述第三线圈围绕所述交叉体的臂的末端缠绕。
6.如前述权利要求中的任意一项所述的接收器线圈组件,其具有大体圆柱形的形式。
7.一种用于可充电电池的接收器线圈组件,包括第一线圈、第二线圈和第三线圈,所述第一线圈、所述第二线圈和所述第三线圈具有彼此横向定向的磁轴,其中,所述线圈中的一个相比于其他线圈能够具有较大的电能传输。
8.如权利要求7所述的接收器线圈组件,其中,能够具有较大的电能传输的所述线圈包围其他的所述线圈。
9.如权利要求7或8所述的接收器线圈组件,其中,所述第一线圈和所述第二线圈采用交叉布置。
10.如权利要求7至9中的任意一项所述的接收器线圈组件,其中,所述第三线圈的所述电能传输容量大于所述第一线圈和所述第二线圈至少10%。
11.如权利要求7至9中的任意一项所述的接收器线圈组件,其中,所述第三线圈的电能传输容量大于所述第一线圈和所述第二线圈至少20%。
12.如权利要求7至9中的任意一项所述的接收器线圈组件,其中,所述第三线圈的导体长度大于所述第一线圈和所述第二线圈的导体长度至少25%。
13.如权利要求7至9中的任意一项所述的接收器线圈组件,其中,所述第三线圈的导体长度大于所述第一线圈和所述第二线圈的导体长度至少50%。
14.一种用于无线可充电电池的电能接收器,所述无线可充电电池包括如前述权利要求中的任意一项所述的接收器线圈组件。
15.一种可充电电池,其包括如权利要求14所述的电能接收器。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ595403 | 2011-09-29 | ||
NZ59540311 | 2011-09-29 | ||
US201261640739P | 2012-05-01 | 2012-05-01 | |
US61/640,739 | 2012-05-01 | ||
CN201280047175.7A CN103827998B (zh) | 2011-09-29 | 2012-09-24 | 无线可充电电池及其部件 |
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EP (1) | EP2764522B1 (zh) |
JP (2) | JP6100788B2 (zh) |
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2012
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- 2012-09-24 US US14/347,096 patent/US9735586B2/en active Active
- 2012-09-24 KR KR1020147008941A patent/KR101975839B1/ko active IP Right Grant
- 2012-09-24 JP JP2014533236A patent/JP6100788B2/ja not_active Expired - Fee Related
- 2012-09-24 CN CN201280047175.7A patent/CN103827998B/zh not_active Expired - Fee Related
- 2012-09-24 CN CN201710966401.6A patent/CN107705967A/zh active Pending
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2018
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US10340705B2 (en) | 2019-07-02 |
US20140225562A1 (en) | 2014-08-14 |
US20170373508A1 (en) | 2017-12-28 |
WO2013048261A1 (en) | 2013-04-04 |
JP2017126571A (ja) | 2017-07-20 |
CN103827998B (zh) | 2017-11-17 |
US10461543B2 (en) | 2019-10-29 |
KR20140065436A (ko) | 2014-05-29 |
US9735586B2 (en) | 2017-08-15 |
JP6100788B2 (ja) | 2017-03-22 |
KR101975839B1 (ko) | 2019-05-09 |
EP2764522A4 (en) | 2015-04-15 |
US20180358815A1 (en) | 2018-12-13 |
JP2014534558A (ja) | 2014-12-18 |
EP2764522A1 (en) | 2014-08-13 |
CN103827998A (zh) | 2014-05-28 |
EP2764522B1 (en) | 2019-01-09 |
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