WO2018166460A1 - 无线充电系统中的功率接收线圈 - Google Patents

无线充电系统中的功率接收线圈 Download PDF

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Publication number
WO2018166460A1
WO2018166460A1 PCT/CN2018/078922 CN2018078922W WO2018166460A1 WO 2018166460 A1 WO2018166460 A1 WO 2018166460A1 CN 2018078922 W CN2018078922 W CN 2018078922W WO 2018166460 A1 WO2018166460 A1 WO 2018166460A1
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Prior art keywords
power receiving
coil
receiving coil
power
coils
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PCT/CN2018/078922
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English (en)
French (fr)
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李暾
贺大玮
潘思铭
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成都市易冲无线科技有限公司
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Publication of WO2018166460A1 publication Critical patent/WO2018166460A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2804—Printed windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/003—Printed circuit coils
    • 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
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0277—Bendability or stretchability details
    • H05K1/028—Bending or folding regions of flexible printed circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/03—Use of materials for the substrate
    • H05K1/0393—Flexible materials
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
    • H05K1/165—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed inductors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/01—Dielectrics
    • H05K2201/0137—Materials
    • H05K2201/0154—Polyimide

Definitions

  • the present invention relates to wireless charging systems, and more particularly to power receiving coils in wireless charging systems.
  • Wireless charging is an evolving technology that brings new convenience to charging electronic devices.
  • energy is transferred from one or more power transmitting (TX) coils to one or more power receiving (RX) coils by magnetic coupling.
  • TX power transmitting
  • RX power receiving
  • input power is transferred from a power transmitter to a power receiver through two or more coupled magnetic coils.
  • the coupled magnetic coil includes a power transmitting coil and a power receiving coil.
  • Conventional wireless charging systems typically have a very limited charging area that requires the RX device to be aligned with the TX device during charging.
  • the present invention proposes a design of an RX coil to achieve a large uniform charging area with high charging efficiency in a wireless charging system.
  • the present invention relates to a power receiving coil for a wireless charging system.
  • the power receiving coil may include a magnetic coil, two terminals, and a substrate.
  • the terminals may extend from the magnetic coil while the magnetic coils are placed on the substrate.
  • the wires of the magnetic coil can be evenly spaced between adjacent turns.
  • the system can include a power transmitter and a power receiver.
  • the power transmitter can include one or more power transmitting coils.
  • the power transmitting coil can be coupled to one or more power receiving coils.
  • the power receiver can include one or more power receiving coils and can be configured to wirelessly charge the device.
  • Each of the one or more power receiving coils may include a wire, two terminals, and a substrate.
  • the wires can be routed into each of one or more power receiving coils.
  • the wires of the magnetic coil can be evenly spaced between adjacent turns. Two terminals may extend from each of the one or more power receiving coils, and each power receiving coil may be placed on the substrate.
  • FIG. 1 is a block diagram showing a wireless charging system consistent with an exemplary embodiment of the present invention.
  • FIG. 2 is a schematic diagram showing an overall overview of a power receiving coil consistent with an exemplary embodiment of the present invention.
  • 3(a)-3(b) are schematic views showing top views of power receiving coils consistent with an exemplary embodiment of the present invention.
  • FIGS. 4(a)-4(b) are schematic views showing side views of a power receiving coil consistent with an exemplary embodiment of the present invention.
  • FIG. 1 is a block diagram showing a wireless charging system 100 consistent with an exemplary embodiment of the present invention.
  • System 100 can include multiple components, some of which can be optional. In some embodiments, system 100 can include more components than those shown in FIG. However, for the purpose of exposing illustrative embodiments, it is not necessary to show all of these components.
  • the System 100 can include a transmit side 101 and a receive side 102.
  • the transmit side 101 can include power input nodes (+ and -) 111, a power amplifier 112, and a power transmitter.
  • the power transmitter can include a TX matching network 113 and one or more TX coils 114.
  • the receiving side 102 can include a power receiver, a rectifier 117, and a load 118 of the RX device.
  • the power receiver can include one or more RX coils 115 and an RX matching network 116.
  • the load 118 can be the battery of the device being charged.
  • the device can be a mobile device, a wearable device, a tablet device, a computer, a car, or any device that includes a rechargeable battery.
  • One or more RX coils can be connected to the device.
  • Power input node 111 can be coupled to power amplifier 112.
  • Power amplifier 112 can be coupled to TX matching network 113.
  • the TX matching network 113 can be connected to one or more TX coils 114.
  • TX matching network 113 may include one or more capacitors. The capacitance of one or more capacitors can be adjustable.
  • the TX matching network 113 and the TX coil 114 may form a resonant circuit or an LC circuit, where L represents a TX coil and C represents a capacitor connected together. The frequency of the LC circuit can be adjusted by adjusting the capacitance of the TX matching network 113.
  • the TX coil 114 can be coupled to one or more RX coils 115 by magnetic coupling.
  • the RX coil 115 can be connected to the RX matching network 116, the RX matching network 116 can be connected to the rectifier 117, and the rectifier 117 can be connected to the load 118.
  • the RX matching network 116 can include one or more capacitors. One or more capacitors can have adjustable capacitance. A capacitor can be used to regulate the frequency of the LC circuit formed by RX coil 115 and RX matching network 116 to operate with the LC circuitry on transmit side 101. Therefore, the resonant frequency of the LC circuit can be determined by adjusting the capacitance of the capacitor.
  • TX matching network 113, TX coil 114, RX coil 115, and RX matching network 116 form a coil-to-coil subsystem 103.
  • the input voltage is converted from DC power to AC power and amplified by power amplifier 112. Power is then transmitted from the transmitting side 101 to the receiving side 102 by two or more coupled magnetic coils. The AC voltage received at the receiving side 102 is regulated by the rectifier 117 back to the DC voltage and then to the load 118.
  • the RX coil can be designed to achieve a large effective charging area while minimizing the physical size of the magnetic coil by optimizing its parameters.
  • the effective charging area of a set of TX coils and RX coils refers to a charging area, wherein if the center of the RX coil is located within the area, the coil pair coil efficiency between the TX coil and the RX coil should be not less than a desired value (eg, user expectation) Or predetermined value).
  • the effective charging area can be on a horizontal plane parallel to the TX coil.
  • the active charging area can be on the same plane as the TX coil.
  • “Horizontal” may refer to a direction parallel to the plane of the TX coil or RX coil
  • vertical may refer to a direction perpendicular to the plane.
  • the radius of the effective charging zone can be defined as the horizontal distance between the center of the TX coil (eg, the vertical projection of the center on the horizontal plane where the effective charging zone is located) and the boundary of the active charging zone.
  • the vertical distance between the TX coil and the RX coil can vary between 0-7 mm.
  • the parameters of the RX coil may refer to the coil shape, the number of turns, the outer diameter, the inner diameter, and the like. These parameters can be adjusted to optimize coil-to-coil efficiency based on simulation and experimentation.
  • Coil to coil efficiency refers to the efficiency between the TX coil and the RX coil. It is calculated by the ratio of the output power of the RX coil to the input power of the TX coil. Losses affecting the efficiency of the coil to the coil include coil-to-coil losses and parasitic resistance losses of the TX matching capacitor and the RX matching capacitor.
  • the parameter values for an exemplary RX coil design are given in Table 1. Small variations in parameter values are considered to be within the scope of the structure and design of the present invention. The range of potential variations is also given in Table 1.
  • the number of turns of the magnetic coil can be 12.
  • the magnetic coil may have a circular or slightly elliptical shape with an outer diameter of 50 mm and an inner diameter of 25 mm.
  • the edge-to-edge spacing between adjacent turns of the magnetic coil may be 0.4 mm.
  • the coil type can be an FPCB (Flexible Printed Circuit Board).
  • the magnetic coil can be placed on a dielectric sheet made of a polyimide (PI) dielectric material having a dielectric thickness of 0.025 mm. In some embodiments, the magnetic coil can be printed on a dielectric sheet.
  • PI polyimide
  • the wire can be made of copper with a line thickness of 2 ounces (0.0696 mm).
  • this particular RX coil design achieves a uniform effective charging area with a coil-to-coil efficiency of not less than 90% and a radius of not less than 20 Millimeter.
  • An overall overview of an exemplary RX design is shown in Figure 2.
  • parameter symbol value variation range Number of turns N 12 ⁇ 1 Coil shape / circle Slightly elliptical Outer diameter OD 50mm ⁇ 2mm the inside diameter of ID 25mm ⁇ 2mm Spacing S 0.4mm ⁇ 0.1mm Coil type / FPCB / Dielectric material / Polyimide (PI) Similar dielectric Dielectric thickness H 0.025mm Arbitrary value Line material / copper Similar material Line thickness D 2 ounces (0.0696mm) ⁇ 0.5 ounces Line width W 0.675mm ⁇ 0.16mm
  • the RX coil can have an outer diameter of 48-52 mm and an inner diameter of 23-27 mm.
  • the RX coil can include 11-13 turns of wire.
  • the wires of the magnetic coil may be evenly spaced between adjacent turns, and the edge-to-edge spacing between adjacent turns is 0.3-0.5 mm.
  • the wire can be made of copper and has a line thickness of 1.5-2.5 ounces with a line width of 0.515-0.835 mm.
  • FIG. 3(a) is a schematic diagram showing a top view of an exemplary RX coil.
  • the wires are wired into a circular coil having two extending terminals, and the magnetic coil is printed on the substrate.
  • the substrate can be a dielectric sheet/layer that can be made of polyimide (PI).
  • ID The inner diameter of the magnetic coil
  • OD the outer diameter of the magnetic coil
  • the two terminals are separated by an edge-to-edge distance d (for example, 1 mm).
  • the two terminals are bent at an angle of 45°.
  • the wires have a line width W and an edge-to-edge spacing S between adjacent turns in the magnetic coil.
  • the RX coil contains 12 turns of wire.
  • FIG. 4(a) is a schematic diagram showing a side view of an exemplary RX coil.
  • the thin rod shape shows a side view of the RX coil and a side view of the sheet of dielectric material.
  • the thickness of the RX coil is 0.0946 mm, which is the sum of the dielectric thickness H and the line thickness D (regardless of the thickness of the terminal). This is due to the design of the wires being routed into coils on the same plane and the magnetic coils printed on the sheet of dielectric material.
  • the area 2 is selected and enlarged in Fig. 4(b).
  • the three rectangles represent the cross section of an exemplary wire with a line height/thickness of D.
  • the wires are located in close contact with the sheet of dielectric material having a thickness H.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

一种用于无线充电系统(100)的功率接收线圈，所述功率接收线圈可以包括磁线圈、两个端子和基板。端子可以从磁线圈延伸出来，而磁线圈可以放置在基板上。磁线圈的导线可以在相邻匝之间均匀地间隔开。

Description

无线充电系统中的功率接收线圈
相关申请的交叉引用
本申请要求2017年3月16日提交的美国申请序号62/472,348、名称为“无线充电系统中的功率接收线圈”的优先权，前述申请的全部内容在此引入本申请作为参考。
技术领域
本发明涉及无线充电系统，尤其涉及无线充电系统中的功率接收线圈。
背景技术
无线充电是一项不断发展的技术，它可以给电子设备充电带来新的便利。在无线充电系统中，特别是感应式无线充电系统中，能量通过磁耦合从一个或多个功率发射(TX)线圈传送到一个或多个功率接收(RX)线圈。
在通常的无线充电系统中，输入功率通过两个或更多个耦合的磁线圈从功率发射器传递给功率接收器。耦合的磁线圈包括功率发射线圈和功率接收线圈。传统的无线充电系统通常具有非常有限的充电区域，在充电时要求RX设备对准TX设备。
为了改善用户体验并拓宽无线充电应用，希望能设计一个无线充电系统以高充电效率覆盖大的充电区域。本发明提出了一种RX线圈的设计，以在无线充电系统中以高充电效率实现大的均匀的充电区域。
发明内容
本发明涉及一种用于无线充电系统的功率接收线圈。功率接收线圈可以包括磁线圈、两个端子和基板。端子可以从磁线圈中延伸出来，而磁线圈放置在基板上。磁线圈的导线可以在相邻匝之间均匀地间隔开。
本发明的另一方面涉及一种无线充电系统。该系统可以包括功率发射器和功率接收器。功率发射器可以包括一个或多个功率发射线圈。功率发射线圈可 以耦合到一个或多个功率接收线圈。功率接收器可以包括一个或多个功率接收线圈，并且可以被配置为对设备进行无线充电。一个或多个功率接收线圈中的每一个都可以包括导线、两个端子和基板。导线可以布线成一个或多个功率接收线圈中的每一个。磁线圈的导线可以在相邻匝之间均匀地间隔开。两个端子可以从一个或多个功率接收线圈中的每一个延伸出来，并且每个功率接收线圈都可以放置在基板上。
应当理解的是，前面的一般性描述和下面的详细描述仅仅是示例性和解释性的，并不是要求保护的本发明的限制。
附图说明
构成本发明的一部分的附图示出了几个非限制性实施例，并且与说明书一起用于解释所公开的原理。
图1是示出与本发明的示例性实施例一致的无线充电系统的框图。
图2是示出与本发明的示例性实施例一致的功率接收线圈整体概况的示意图。
图3(a)-3(b)是示出与本发明的示例性实施例一致的功率接收线圈俯视图的示意图。
图4(a)-4(b)是示出与本发明的示例性实施例一致的功率接收线圈侧视图的示意图。
具体实施方式
现在将详细参考示例性实施例，其示例在附图中示出。以下描述参考附图，除非另有说明，不同附图中相同的附图标记表示相同或相似的元件。在与本发明一致的示例性实施例的以下描述中阐述的实施方式不表示与本发明一致的所有实现。相反，它们仅仅是与本发明相关的方面一致的系统和方法的示例。
图1是示出与本发明的示例性实施例一致的无线充电系统100的框图。系 统100可以包括多个组件，其中一些组件可以是可选的。在一些实施例中，系统100可以包括比图1中示出的更多的组件。然而，为了公开说明性的实施例，不必示出所有这些组件。
系统100可以包括发射侧101和接收侧102。发射侧101可以包括功率输入节点(+和-)111、功率放大器112和功率发射器。功率发射器可以包括TX匹配网络113和一个或多个TX线圈114。接收侧102可以包括功率接收器、整流器117和RX设备的负载118。功率接收器可以包括一个或多个RX线圈115和RX匹配网络116。负载118可以是被充电设备的电池。该设备可以是移动设备、可穿戴设备、平板设备、计算机、汽车或任何包含可充电电池的设备。一个或多个RX线圈可以连接到该设备。功率输入节点111可以连接到功率放大器112。功率放大器112可以连接到TX匹配网络113。TX匹配网络113可以连接到一个或多个TX线圈114。TX匹配网络113可以包括一个或多个电容器。一个或多个电容器的电容可以是可调的。TX匹配网络113和TX线圈114可以形成谐振电路或LC电路，其中L代表TX线圈，而C代表连接在一起的电容器。LC电路的频率可以通过调节TX匹配网络113的电容来调节。TX线圈114可以通过磁耦合与一个或多个RX线圈115耦合。在接收侧102中，RX线圈115可以连接到RX匹配网络116，RX匹配网络116可以连接到整流器117，而整流器117可以连接到负载118。RX匹配网络116可以包括一个或多个电容器。一个或多个电容器可以具有可调电容。电容器可以用于调节由RX线圈115和RX匹配网络116形成的LC电路的频率，以与发射侧101上的LC电路一起工作。因此，LC电路的谐振频率可以通过调节电容器的电容来确定。TX匹配网络113、TX线圈114、RX线圈115和RX匹配网络116形成一个线圈对线圈的子系统103。
在一个实施例中，将输入电压从直流功率转换成交流功率，并由功率放大器112放大。然后，功率通过两个或更多个耦合的磁线圈从发射侧101传输到接收侧102。在接收侧102处接收到的交流电压由整流器117调节回到直流电压，然后传送到负载118。
RX线圈可以设计成实现大的有效充电区域，同时通过优化其参数来最小化磁线圈的物理尺寸。一组TX线圈和RX线圈的有效充电区域指的是充电区域，其中如果RX线圈的中心位于该区域内，则TX线圈和RX线圈之间的线圈对线圈效率应该不小于期望值(例如，用户期望的或预先确定的值)。有效充电区域可以在与TX线圈平行的水平面上。例如，有效充电区域可以与TX线圈在同一平面上。“水平”可以指与TX线圈或RX线圈的平面平行的方向，而“垂直”可以指与该平面垂直的方向。有效充电区域的半径可被定义为TX线圈的中心(例如，该中心在有效充电区域所在的水平面上的垂直投影)与有效充电区域的边界之间的水平距离。在一些实施例中，TX线圈和RX线圈之间的垂直距离可以在0-7mm之间变化。RX线圈的参数可以指线圈形状、匝数、外径、内径等。基于仿真和实验，可以调整这些参数以优化线圈对线圈效率。线圈对线圈效率是指TX线圈和RX线圈之间的效率。它通过RX线圈的输出功率与TX线圈的输入功率之比来计算。影响线圈对线圈效率的损耗包括线圈对线圈损耗以及TX匹配电容器和RX匹配电容器的寄生电阻损耗。
表1中给出了一个示例性RX线圈设计的参数值。参数值的小变化应被认为是在本发明的结构和设计的范围内。表1中还给出了潜在的变化范围。磁线圈的匝数可以是12。磁线圈可以具有圆形或轻微的椭圆形，其外径为50mm，内径为25mm。磁线圈的相邻匝之间的边缘到边缘的间距可以是0.4mm。线圈类型可以是FPCB(柔性印刷电路板)。磁线圈可以放置在由电介质厚度为 0.025mm的聚酰亚胺(PI)介电材料制成的电介质片上。在一些实施例中，磁线圈可以印刷在电介质片上。导线可以由铜制成，线路厚度为2盎司(0.0696毫米)。当与WPC(无线充电联盟)规范参考设计中的A11型TX线圈配对时，这种特定的RX线圈设计可实现均匀的有效充电区域，线圈对线圈效率不低于90％，其半径不小于20毫米。示例性RX设计的整体概况如图2所示。
表1
参数 符号 值 变化范围
匝数 N 12 ±1
线圈形状 / 圆 轻微椭圆
外径 OD 50mm ±2mm
内径 ID 25mm ±2mm
匝间距 S 0.4mm ±0.1mm
线圈类型 / FPCB /
介电材料 / 聚酰亚胺(PI) 类似的电介质
电介质厚度 H 0.025mm 任意值
线路材料 / 铜 类似的材料
线路厚度 D 2盎司(0.0696mm) ±0.5盎司
线路宽度 W 0.675mm ±0.16mm
在一些实施例中，RX线圈可以具有48-52mm的外径和23-27mm的内径。RX线圈可以包括11-13匝的导线。磁线圈的导线可以在相邻匝之间均匀地间隔开，相邻匝之间的边缘到边缘的间距为0.3-0.5mm。导线可以由铜制成，并且具有1.5-2.5盎司的线路厚度，线路宽度为0.515-0.835mm。
图3(a)是示出示例性RX线圈的俯视图的示意图。如图3(a)所示，导线布线成具有两个延伸端子的圆形线圈，且磁线圈印刷在基板上。在一些实施例中，基板可以是电介质片/层，其可以由聚酰亚胺(PI)制成。磁线圈的内径表示为ID，而磁线圈的外径表示为OD。两个端子之间以边缘到边缘的距离d(例如1mm)分开。在一些实施例中，如图3(a)所示，两个端子弯曲成45°的角度。为了查看RX线圈的详细信息，选择区域1并在图3(b)中放大。在一个实施例中，导线具有线路宽度W，磁线圈中相邻匝之间的边缘到边缘的间距S。在该示例性设计中，RX线圈包含12匝导线。
图4(a)是示出示例性RX线圈的侧视图的示意图。细棒状形状示出了RX线圈的侧视图和介电材料片的侧视图。如图4(a)所示，RX线圈的厚度为0.0946mm，这是电介质厚度H和线路厚度D的总和(不考虑端子的厚度)。这是由于导线在同一平面上布线成线圈，且磁线圈印刷在介电材料片上的设计造成的。为了查看磁线圈的位置的详细信息，选择区域2并在图4(b)中放大。三个矩形代表示例性导线的横截面，其线路高度/厚度为D。如图4(b)所示，导线位于与厚度为H的介电材料片紧密接触的位置。
本发明的范围不限于本文描述的具体优选实施例，因为这些实施例旨在说明本发明的若干方面。实际上，除了本文所示和所描述的那些之外，本发明的各种修改对于本领域技术人员来说将从上述描述中变得显而易见。这样的修改也落在所附权利要求的范围内。

Claims (24)

  1. 一种用于无线充电系统的功率接收线圈，其特征在于，包括：
    由导线在平面上布线成的磁线圈，其中所述磁线圈的导线在相邻匝之间均匀地间隔开；
    两个从所述磁线圈延伸出来的端子；和
    在其上放置所述磁线圈的基板。
  2. 根据权利要求1所述的功率接收线圈，其特征在于，线圈类型包括柔性印刷电路板。
  3. 根据权利要求1所述的功率接收线圈，其特征在于，所述磁线圈具有圆形形状。
  4. 根据权利要求1所述的功率接收线圈，其特征在于，所述磁线圈的外径为48-52mm。
  5. 根据权利要求1所述的功率接收线圈，其特征在于，所述磁线圈的内径为23-27mm。
  6. 根据权利要求1所述的功率接收线圈，其特征在于，所述磁线圈有11-13匝。
  7. 根据权利要求1所述的功率接收线圈，其特征在于，所述导线在相邻匝之间以0.3-0.5mm的边缘到边缘的间距均匀地间隔开。
  8. 根据权利要求1所述的功率接收线圈，其特征在于，所述导线由铜制成，并具有1.5-2.5盎司的线路厚度，而线路宽度为0.515-0.835mm。
  9. 根据权利要求1所述的功率接收线圈，其特征在于，所述两个端子以1mm的边缘到边缘的距离分开。
  10. 根据权利要求1所述的功率接收线圈，其特征在于，所述两个端子弯曲形成45°的角度。
  11. 根据权利要求1所述的功率接收线圈，其特征在于，所述基板是介电材料。
  12. 根据权利要求1所述的功率接收线圈，其特征在于，所述基板由聚酰亚 胺制成，厚度为0.025mm。
  13. 一种无线充电系统，其特征在于，包括：
    功率发射器，被配置为接收输入功率，所述功率发射器包括无线耦合到一个或多个功率接收线圈的一个或多个功率发射线圈；和
    功率接收器，其包括所述一个或多个功率接收线圈，并且被配置为对设备充电；
    其中，所述一个或多个功率接收线圈中的每一个都包括布线成所述功率接收线圈并且在相邻匝之间均匀地间隔开的导线，从所述功率接收线圈延伸出来的两个端子，以及在其上放置所述功率接收线圈的基板。
  14. 根据权利要求13所述的系统，其特征在于，所述一个或多个功率接收线圈中的每一个都具有柔性印刷电路板的线圈类型。
  15. 根据权利要求13所述的系统，其特征在于，所述一个或多个功率接收线圈中的每一个都具有圆形形状。
  16. 根据权利要求13所述的系统，其特征在于，所述一个或多个功率接收线圈中的每一个都具有48-52mm的外径。
  17. 根据权利要求13所述的系统，其特征在于，所述一个或多个功率接收线圈中的每一个都具有23-27mm的内径。
  18. 根据权利要求13所述的系统，其特征在于，所述一个或多个功率接收线圈中的每一个都具有11-13匝。
  19. 根据权利要求13所述的系统，其特征在于，所述导线在相邻匝之间以0.3-0.5mm的边缘到边缘的间距均匀地间隔开。
  20. 根据权利要求13所述的系统，其特征在于，所述导线由铜制成，并具有1.5-2.5盎司的线路厚度，而线路宽度为0.515-0.835mm。
  21. 根据权利要求13所述的系统，其特征在于，所述两个端子以1mm的边缘到边缘的距离分开。
  22. 根据权利要求13所述的系统，其特征在于，所述两个端子弯曲形成45°的角度。
  23. 根据权利要求13所述的系统，其特征在于，所述基板是介电材料。
  24. 根据权利要求13所述的系统，其特征在于，所述基板由聚酰亚胺制成，厚度为0.025mm。
PCT/CN2018/078922 2017-03-16 2018-03-14 无线充电系统中的功率接收线圈 WO2018166460A1 (zh)

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