WO2023056673A1 - 一种便携式无线充电座 - Google Patents

一种便携式无线充电座 Download PDF

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Publication number
WO2023056673A1
WO2023056673A1 PCT/CN2021/126944 CN2021126944W WO2023056673A1 WO 2023056673 A1 WO2023056673 A1 WO 2023056673A1 CN 2021126944 W CN2021126944 W CN 2021126944W WO 2023056673 A1 WO2023056673 A1 WO 2023056673A1
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Prior art keywords
transmitting coil
wireless charging
portable wireless
charging stand
positioning magnetic
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PCT/CN2021/126944
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English (en)
French (fr)
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张吉锋
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张吉锋
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Publication of WO2023056673A1 publication Critical patent/WO2023056673A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Definitions

  • the invention relates to the technical field of wireless charging, in particular to a portable wireless charging stand.
  • Wireless charging technology utilizes the principle of electromagnetic induction and AC induction technology, uses coil coupling at the sending and receiving ends to send and receive the AC signals generated by induction, rectifies the AC power, and outputs the stabilized voltage to the device to be charged. Therefore, the location of the wireless charging stand and the device to be charged needs to match, and try to find the location where the charging efficiency is maximized for charging, otherwise the charging efficiency will be seriously affected.
  • the technical problem to be solved by the present invention is to provide a low-cost portable wireless charging stand capable of quick alignment in view of the above-mentioned prior art.
  • a portable wireless charging stand including a casing, a transmitting coil arranged in the casing, and a circuit board, wherein the transmitting coil is electrically connected to the circuit board, and the circuit A power interface is provided on the board, and a socket is opened on the housing corresponding to the power interface. the circumference of the coil.
  • the distances between two adjacent positioning magnetic parts and the outer edge of the transmitting coil are different.
  • the inner wall of the housing is provided with installation grooves corresponding to the positioning magnetic parts.
  • the magnetic part is fixedly arranged in the installation groove.
  • the inner wall of the housing is provided with a limiting groove corresponding to the transmitting coil, and the transmitting coil is limited in the limiting groove .
  • the housing includes a first half-shell and a second half-shell that are combined up and down, and a support platform is provided on the inner surface of the first half-shell;
  • the transmitting coil is fixed on the skeleton plate, and the skeleton plate is arranged on the supporting platform so that the transmitting coil is close to the inner surface of the first half-shell.
  • the inner surface of the first half-shell is provided with a first limit post, and the inner surface of the second half-shell corresponds to the The position of the first limit post is provided with a second limit post, and the second limit post has a limit hole capable of being inserted into the first limit post.
  • the circuit board is fixedly arranged in the second half shell.
  • the circuit board is electrically connected with a display lamp, and the housing is provided with a mounting hole for the display lamp to be embedded in.
  • the two positioning magnetic parts are arranged side by side on one side of the transmitting coil.
  • the advantage of the present invention is that the present invention realizes the positioning of the device to be charged by setting the positioning magnetic parts, that is, the magnetic parts at the corresponding positions are set on the device to be charged, and the positioning is realized by mutual attraction.
  • the structural cost is low and the positioning operation is very simple.
  • the positioning magnetic parts are distributed non-centrosymmetrically along the outer circumference of the transmitting coil, which avoids the problem of wrong direction and angle when placed in alignment, thus greatly improving the positioning accuracy.
  • the portable wireless charging stand has a simple structure and a small volume, is convenient to carry and use, and has simple and effective positioning operations.
  • FIG. 1 is a three-dimensional structure diagram of a portable wireless charging stand according to Embodiment 1 of the present invention.
  • FIG. 2 is an exploded perspective view of the portable wireless charging stand according to Embodiment 1 of the present invention.
  • FIG. 3 is another perspective exploded view of the portable wireless charging stand according to Embodiment 1 of the present invention.
  • FIG. 4 is a structural schematic view of the circuit board, the transmitting coil, and the positioning magnetic member installed on the second half-shell in Embodiment 1 of the present invention.
  • Fig. 5 is a structural schematic view of the transmitting coil and the positioning magnetic member installed on the second half-shell in the second embodiment of the present invention.
  • the wireless charging stand includes a casing 1 , a transmitting coil 2 and a circuit board 3 arranged in the casing 1 .
  • the transmitting coil 2 is electrically connected with the circuit board 3 , and the circuit board 3 is provided with a power interface 4 , and the casing 1 is provided with a socket 121 corresponding to the power interface 4 .
  • the transmitting coil 2 realizes the charging of the device to be charged by interacting with the receiving coil in the device to be charged.
  • the device to be charged When the device to be charged is placed on the portable wireless charging stand, in order to improve charging efficiency, it is necessary to align the receiving coil in the device to be charged with the transmitting coil 2 in the casing 1 .
  • at least two positioning magnetic parts 5 are arranged in the casing 1, and these positioning The magnetic member 5 is arranged on the outer periphery of the transmitting coil 2 non-centrosymmetrically.
  • a magnetic piece is correspondingly provided at the position of the positioning magnetic piece 5 on the device to be charged, so as to achieve accurate positioning and placement of the device to be charged on the portable wireless charging stand by way of attraction.
  • the number of positioning magnetic parts 5 can be specifically determined according to the volume of the portable wireless charging stand. For example, when the portable wireless charging stand is large in size, the transmitting coil 2 is usually relatively large. At this time, the number of positioning magnetic parts 5 can be Set more. If the portable wireless charging stand is small in size, the transmitting coil 2 is usually relatively small, and the number of positioning magnetic parts 5 can be correspondingly reduced.
  • the distances between two adjacent positioning magnetic parts 5 and the outer edge of the transmitting coil 2 may be different, and the polarity orientations of two adjacent positioning magnetic parts 5 may also be different. According to needs, the aforementioned distance and polarity features can also be used in combination to achieve a better fast and accurate positioning effect.
  • the positioning magnetic member 5 is a circular magnet, and the two positioning magnetic members 5 are arranged side by side on the front side of the plane where the transmitting coil 2 is located, and the circuit board 3 is arranged on the rear side of the transmitting coil 2 .
  • the housing 1 is in the shape of a flat box as a whole, and is composed of upper and lower first half-shells 11 and second half-shells 12.
  • the second half-shell 12 is buckled above the first half-shell 11, and the first half-shell 11
  • the connection between the two and the second half shell 12 is realized by a plurality of screws.
  • the circuit board 3 is fixed on the inner side of the second half-shell 12 by screws, and in this embodiment, it is specifically located on the rear side of the transmitting coil 2 .
  • the inner surface of the first half-shell 11 is provided with a supporting platform 111, and the transmitting coil 2 is fixed on the skeleton plate 21, and the skeleton plate 21 is arranged on the supporting platform 111 so that the transmitting coil 2 can be close to the inside of the first half-shell 11. surface.
  • a limit groove 123 is arranged on the inner wall surface of the housing 1 corresponding to the transmitting coil 2, and the transmitting coil 2 is limited in the limit groove 123, so that the limit groove 123 can prevent the transmitting coil 2 from moving and prevent the transmitting coil 2 from being deflected. The situation of moving will affect the charging efficiency.
  • the limiting groove 123 is provided on the inner surface of the second half-shell 12 , that is, supported by the support platform 111 , the transmitting coil 2 is close to the inner surface of the first half-shell 11 and limited in the limiting groove 123 .
  • the transmitting coil 2 is close to the second half-shell 12, so that the receiving coil in the device to be charged placed on the second half-shell 12 for charging can be closer to the transmitting coil 2, and the charging effect is better.
  • an installation groove 122 is provided on the inner wall of the housing 1 corresponding to each positioning magnetic piece 5 , and the positioning magnetic piece 5 is fixedly arranged in the installation groove 122 .
  • the installation groove 122 is provided on the inner surface of the second half-shell 12 , the outer periphery of the installation groove 122 matches the shape of the outer edge of the positioning magnetic component 5 , and the positioning magnetic component 5 is stuck in the installation groove 122 .
  • the installation groove 122 not only the installation of the accurate position of the positioning magnetic part 5 is realized, but also the distance between the positioning magnetic part 5 and the distance between the positioning magnetic part 5 and the transmitting coil 2 can be reduced under the barrier effect of the groove wall of the installation groove 122. time influence.
  • the circuit board 3 is electrically connected with a display lamp 6, and the housing 1 is provided with a mounting hole 125 for the display lamp 6 to be embedded.
  • the display lamp 6 can display the power connection of the circuit board 3, which is convenient The user charges wirelessly while connected to a power source.
  • the portable wireless charging stand is equipped with positioning magnetic parts 5 to realize the positioning of the device to be charged, that is, the magnetic parts at corresponding positions are set on the device to be charged, and the positioning is realized by mutual attraction.
  • This structure is low in cost and the positioning operation is very simple.
  • the positioning magnetic parts 5 are non-uniformly distributed along the outer circumference of the transmitting coil 2, and the problem of wrong direction and angle of placement is avoided during alignment and placement, thus greatly improving the positioning accuracy.
  • the portable wireless charging stand has a simple structure and a small volume, and is convenient to carry and use.
  • FIG. 5 it is the second embodiment of the portable wireless charging stand of the present invention.
  • the difference between the wireless charging stand of this embodiment and the above-mentioned first embodiment is that there are three positioning magnetic parts 5 arranged on the outer periphery of the transmitting coil 2, of which Two positioning magnetic parts 5 are arranged on the same side of the transmitting coil 2 with the same polarity (ie, the front side of the transmitting coil 2), and one positioning magnetic part 5 is independently arranged on the side opposite to the other two positioning magnetic parts 5 (that is, the rear side of the transmitting coil 2 is also where the corresponding circuit board 3 is located), and the polarity is different from that of the other two positioning magnetic components 5 .
  • the circuit board 3 installed on the rear side of the transmitting coil 2 is omitted in FIG. 5 .
  • two magnetic parts can be set on the front and rear sides respectively on the device to be charged, and the polarities correspond to the positioning magnetic parts 5 on the front and rear sides of the wireless charging stand (the adsorption surfaces are different), so that it can be more accurate Position the device to be charged on the wireless charging stand.

Abstract

一种便携式无线充电座，包括壳体(1)、发射线圈(2)、线路板(3)，发射线圈(2)与线路板(3)电连接，线路板(3)上设置有电源接口(4)，壳体(1)上对应于电源接口(4)开设有插孔(121)，壳体(1)内设置有至少两个定位磁性件(5)，定位磁性件(5)非中心对称地设置在发射线圈(2)的外周。与现有技术相比，本发明的便携式无线充电座能够实现待充电设备的快速定位，实现成本低，且定位操作简单有效。

Description

一种便携式无线充电座 技术领域
本发明涉及无线充电的技术领域，尤其涉及一种便携式无线充电座。
背景技术
无线充电因其使用便利性，已迅速在手机及各种电子产品中得到应用，通过无线充电座，可以实现点对点的无线充电，使充电摆脱了有线的束缚。无线充电技术利用了电磁感应原理及交流感应技术，在发送和接收端利用线圈耦合来发送和接收感应产生的交流信号，并对交流电进行整流，稳压输出给待充电设备。因此，无线充电座与待充电设备之间需要位置吻合，尽可能寻找实现充电效率最大所在位置进行充电，否则会严重影响充电效率。
公开号为CN106385078A(申请号为201610979374.1)的中国发明专利申请《无线充电器、终端及无线充电控制方法》，其中公开的无线充电器，需要额外设置压力传感器，并根据压力传感器检测信息进行计算，进而来确定无线充电器的线圈中心坐标，不仅成本高，且计算方法相对复杂。
发明内容
本发明所要解决的技术问题是针对上述现有技术提供一种成本低、能够实现快速对准的便携式无线充电座。
本发明解决上述技术问题所采用的技术方案为：一种便携式无线充电座，包括壳体、设置在壳体内的发射线圈、线路板，其中，所述发射线圈与线路板电连接，所述线路板上设置有电源接口，所述壳体上对应于电源接口开设有插孔，其特征在于：所述壳体内设置有至少两个定位磁性件，所述定位磁性件非中心对称地设置在发射线圈的外周。
为了更准确的实现定位，相邻的两个定位磁性件距离发射线圈外边缘的距离不同。
为了更准确的实现定位，相邻的两个定位磁性件的极性朝向相异。
为了方便实现定位磁性件的安装，同时减小定位磁性件之间以及定位磁性件与发射线圈之间影响，所述壳体的内壁面上对应于各定位磁性件设置有安装槽，所述定位磁性件固定设置在安装槽内。
为了方便实现对发射线圈的定位，避免发射线圈发生偏移的情况而影响充电效率，所述壳体的内壁面上对应于发射线圈设置有限位槽，所述发射线圈限位在限位槽内。
优选地，所述壳体包括上下对合一起的第一半壳和第二半壳，所述第一半壳的内表 面上设置有支撑台；
所述发射线圈固定在骨架板上，所述骨架板设置在支撑台上而使得发射线圈靠近第一半壳的内表面。
为了方便实现第一半壳和第二半壳之间的对合连接，所述第一半壳的内表面上设置有第一限位柱，所述第二半壳的内表面上对应于第一限位柱的位置设置有第二限位柱，所述第二限位柱具有能供第一限位柱插入的限位孔。
优选地，所述线路板固定设置在第二半壳内。
为了方便用户了解充电状态，所述线路板上电连接有显示灯，所述壳体上设有供显示灯嵌入的安装孔。
优选地，所述定位磁性件设置有两个，两个定位磁性件并列设置在发射线圈的一侧。
与现有技术相比，本发明的优点在于：本发明通过设置定位磁性件来实现对待充电设备的定位，即在待充电设备上设置对应位置的磁性件，通过相互吸合以实现定位，该结构成本低且定位操作非常简单。在此基础上，将定位磁性件沿发射线圈的外周非中心对称分布，在对准放置时，避免了出现方向放置角度不对的问题，如此大大提升了定位的准确性。该便携式无线充电座结构简单，体积小，可方便移动携带使用，定位操作简单有效。
附图说明
图1为本发明实施例一的便携式无线充电座的立体结构图。
图2为本发明实施例一的便携式无线充电座的立体分解图。
图3为本发明实施例一的便携式无线充电座的另一个立体分解图。
图4为本发明实施例一中线路板、发射线圈、定位磁性件安装在第二半壳上的结构示意图。
图5为本发明实施例二中发射线圈、定位磁性件安装在第二半壳上的结构示意图。
具体实施方式
以下结合附图实施例对本发明作进一步详细描述。
如图1-图4所示，为本发明的便携式无线充电座实施例一。该无线充电座包括壳体1和设置在壳体1内的发射线圈2、线路板3。
其中，发射线圈2与线路板3电连接，而线路板3上设置有电源接口4，壳体1上对应于电源接口4开设有插孔121。充电时，需要通过电源线连接在电源接口4上进而实现电源接口4与外部电源之间的电连接。外部电源的供电经过线路板3的处理而输送至发射线圈2，发射线圈2通过与待充电设备中的接收线圈之间相互作用，实现对待充 电设备的充电。
而待充电设备放置在该便携式无线充电座上时，为了提高充电效率，需要将待充电设备中的接收线圈与壳体1内的发射线圈2对准。为实现两者的准确定位，进而使得待充电设备能够快速准确的实现在该便携式无线充电座上的定位放置，本实施例中在壳体1内设置有至少两个定位磁性件5，这些定位磁性件5非中心对称地设置在发射线圈2的外周。当然，待充电设备上在定位磁性件5的位置对应设置磁性件，以通过吸合的方式，实现待充电设备在该便携式无线充电座上的准确定位放置。
定位磁性件5的数量可以根据该便携式无线充电座的体积具体来确定，如当该便携式无线充电座体积较大时，通常发射线圈2也相对较大，此时，定位磁性件5的数量可以多设置一些。如果该便携式无线充电座体积较小时，通常发射线圈2也相对较小，定位磁性件5的数量可以相应少设置一些。
为了更准确的实现定位，相邻的两个定位磁性件5距离发射线圈2外边缘的距离可以不同，相邻的两个定位磁性件5的极性朝向也可以不同。根据需要，也可以将前述距离、极性特征进行混合使用，进而来达到更好的快速、准确定位效果。
而本实施例中，定位磁性件5设置有两个，两个定位磁性件5的极性相异，且一左一右地并列设置在发射线圈2的同一侧。具体地，定位磁性件5为圆形磁铁，两个定位磁性件5并列设置在发射线圈2所在平面的前侧，线路板3设置在发射线圈2的后侧。
壳体1整体呈扁盒状，由上下两个第一半壳11和第二半壳12对合而成，第二半壳12扣设在第一半壳11的上方，第一半壳11和第二半壳12之间通过多个螺钉实现两者的连接。
线路板3利用螺钉固定设置在第二半壳12的内侧，本实施例中，具体是位于发射线圈2的后侧。
第一半壳11的内表面上设置有支撑台111，发射线圈2固定在骨架板21上，而该骨架板21设置在支撑台111上而使得发射线圈2能靠近第一半壳11的内表面。在壳体1的内壁面上对应于发射线圈2设置有限位槽123，发射线圈2限位在限位槽123内，如此限位槽123能够避免发射线圈2发生移动，避免发射线圈2发生偏移的情况而影响充电效率的情况。具体地，该限位槽123设置在第二半壳12的内表面上，即通过支撑台111的支撑使得发射线圈2贴近第一半壳11的内表面而限位在限位槽123内。而发射线圈2贴近第二半壳12，使得放置在第二半壳12上进行充电的待充电设备中的接收线圈能够更接近于发射线圈2，充电效果更好。
另外，壳体1的内壁面上对应于各定位磁性件5设置有安装槽122，定位磁性件5固定设置在安装槽122内。具体地，该安装槽122设置在第二半壳12的内表面上，安装槽122的外周与定位磁性件5的外缘形状相匹配，定位磁性件5则卡在该安装槽122内。通过安装槽122，不仅实现了定位磁性件5准确位置的安装，同时在安装槽122的 槽壁的阻隔作用下，还能减小定位磁性件5之间以及定位磁性件5与发射线圈2之间影响。
为了方便用户了解充电状态，线路板3上电连接有显示灯6，壳体1上设有供显示灯6嵌入的安装孔125，该显示灯6能够显示线路板3的电源连接情况，进而方便用户在连接电源的情况下进行无线充电。
该便携式无线充电座，设置定位磁性件5来实现对待充电设备的定位，即在待充电设备上设置对应位置的磁性件，通过相互吸合以实现定位，该结构成本低且定位操作非常简单。在此基础上，将定位磁性件5沿发射线圈2的外周非均匀分布，在对准放置时，避免了出现方向放置角度不对的问题，如此大大提升了定位的准确性。该便携式无线充电座结构简单，体积小，可方便移动携带使用。
如图5所示，为本发明的便携式无线充电座实施例二，本实施例的无线充电座与上述实施例一的区别点在于：在发射线圈2外周设置的定位磁性件5有三个，其中两个定位磁性件5极性相同地设置在发射线圈2的同一侧(即发射线圈2的前侧)，一个定位磁性件5独立地设置在与另两个定位磁性件5相对的那一侧(即发射线圈2的后侧，也是对应线路板3所在的位置)，且极性与另两个定位磁性件5的极性相异设置。为了显示所有定位磁性件5的所在位置，图5中省去了安装在发射线圈2后侧的线路板3。
实际应用时，待充电设备上可以在前、后侧分别设置两个磁性件，极性与无线充电座上前、后侧的定位磁性件5相对应(吸附面相异)，如此，可以更加精准地将待充电设备定位在该无线充电座上。
在本发明的说明书及权利要求书中使用了表示方向的术语，诸如“前”、“后”、“上”、“下”、“左”、“右”、“侧”、“顶”、“底”等，用来描述本发明的各种示例结构部分和元件，但是在此使用这些术语只是为了方便说明的目的，是基于附图中显示的示例方位而确定的。由于本发明所公开的实施例可以按照不同的方向设置，所以这些表示方向的术语只是作为说明而不应视作为限制，比如“上”、“下”并不一定被限定为与重力方向相反或一致的方向。

Claims (9)

  1. 一种便携式无线充电座，包括壳体(1)、设置在壳体(1)内的发射线圈(2)、线路板(3)，其中，所述发射线圈(2)与线路板(3)电连接，所述线路板(3)上设置有电源接口(4)，所述壳体(1)上对应于电源接口(4)开设有插孔(121)，其特征在于：所述壳体(1)内设置有至少两个定位磁性件(5)，所述定位磁性件(5)非中心对称地设置在发射线圈(2)的外周。
  2. 根据权利要求1所述的便携式无线充电座，其特征在于：相邻的两个定位磁性件(5)距离发射线圈(2)外边缘的距离不同。
  3. 根据权利要求1所述的便携式无线充电座，其特征在于：相邻的两个定位磁性件(5)的极性朝向相异。
  4. 根据权利要求1至3任一权利要求所述的便携式无线充电座，其特征在于：所述壳体(1)的内壁面上对应于各定位磁性件(5)设置有安装槽(122)，所述定位磁性件(5)固定设置在安装槽(122)内。
  5. 根据权利要求1至3任一权利要求所述的便携式无线充电座，其特征在于：所述壳体(1)的内壁面上对应于发射线圈(2)设置有限位槽(123)，所述发射线圈(2)限位在限位槽(123)内。
  6. 根据权利要求1至3任一权利要求所述的便携式无线充电座，其特征在于：所述壳体(1)包括上下对合的第一半壳(11)和第二半壳(12)，所述第一半壳(11)的内表面上设置有支撑台(111)；
    所述发射线圈(2)固定在骨架板(21)上，所述骨架板(21)设置在支撑台(111)上而使得发射线圈(2)靠近第一半壳(11)的内表面。
  7. 根据权利要求6所述的便携式无线充电座，其特征在于：所述线路板(3)固定设置在第二半壳(12)内。
  8. 根据权利要求1至3任一权利要求所述的便携式无线充电座，其特征在于：所述线路板(3)上电连接有显示灯(6)，所述壳体(1)上设有供显示灯(6)嵌入的安装孔(125)。
  9. 根据权利要求1至3任一权利要求所述的便携式无线充电座，其特征在于：所述定位磁性件(5)设置有两个，两个定位磁性件(5)并列设置在发射线圈(2)的一侧。
PCT/CN2021/126944 2021-10-09 2021-10-28 一种便携式无线充电座 WO2023056673A1 (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105305525A (zh) * 2014-06-20 2016-02-03 全汉企业股份有限公司 无线充电装置
CN213213138U (zh) * 2020-08-31 2021-05-14 深圳市蓝禾技术有限公司 无线充电器及无线充电系统
CN112994273A (zh) * 2019-12-16 2021-06-18 北京小米移动软件有限公司 终端设备及无线发射组件

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105305525A (zh) * 2014-06-20 2016-02-03 全汉企业股份有限公司 无线充电装置
CN112994273A (zh) * 2019-12-16 2021-06-18 北京小米移动软件有限公司 终端设备及无线发射组件
CN213213138U (zh) * 2020-08-31 2021-05-14 深圳市蓝禾技术有限公司 无线充电器及无线充电系统

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