WO2022104915A1 - 电子设备及无线充电系统 - Google Patents

电子设备及无线充电系统 Download PDF

Info

Publication number
WO2022104915A1
WO2022104915A1 PCT/CN2020/133104 CN2020133104W WO2022104915A1 WO 2022104915 A1 WO2022104915 A1 WO 2022104915A1 CN 2020133104 W CN2020133104 W CN 2020133104W WO 2022104915 A1 WO2022104915 A1 WO 2022104915A1
Authority
WO
WIPO (PCT)
Prior art keywords
annular
magnetic steel
annular magnetic
induction coil
assembly
Prior art date
Application number
PCT/CN2020/133104
Other languages
English (en)
French (fr)
Inventor
邹习习
周凯琦
钟文
周卓帆
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声精密制造科技(常州)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 瑞声声学科技(深圳)有限公司, 瑞声精密制造科技(常州)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022104915A1 publication Critical patent/WO2022104915A1/zh

Links

Classifications

    • 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
    • H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
    • 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the present application relates to the field of wireless charging, and in particular, to electronic devices and wireless charging systems.
  • the electronic device is provided with a first magnetic positioning component
  • the wireless charging device is provided with a second magnetic positioning component
  • the magnetic positioning component of the first magnetic positioning component and the second magnetic positioning component is used between the electronic device and the wireless charging device.
  • the suction realizes the automatic alignment between the transmitting coil and the induction coil to improve the charging efficiency, and realizes the electromagnetic shielding through the magnetic positioning assembly, so as to avoid the electromagnetic influence on the electronic components inside and outside the magnetic positioning assembly.
  • the magnetic attraction force formed is small, and the electromagnetic shielding effect is poor.
  • the first magnetic positioning component of the existing electronic device has a small magnetic attraction force, which is not conducive to the automatic alignment between the transmitting coil and the induction coil, and the electromagnetic shielding effect is not good.
  • One of the objectives of the present application is to provide an electronic device, which can effectively improve the magnetic attraction force and the electromagnetic shielding effect of the first annular positioning assembly.
  • an electronic device comprising a support member and an induction coil assembly disposed on the support member, the induction coil assembly including an induction coil and a first coil surrounding the outer circumference of the induction coil an annular positioning assembly
  • the first annular positioning assembly includes a first annular magnetic steel, a second annular magnetic steel, an annular soft magnetic steel, a third annular magnetic steel and a fourth annular magnetic steel, the first annular magnetic steel, the third annular magnetic steel
  • the second annular magnetic steel, the annular soft magnetic steel, the third annular magnetic steel and the fourth annular magnetic steel are arranged in order from the inside to the outside in the radial direction; wherein, the first annular magnetic steel and the fourth annular magnetic steel are charged along the axial direction.
  • the polarity of the first annular magnet toward the support is opposite to the polarity of the fourth annular magnet toward the support.
  • the second annular magnet and the third annular magnet have opposite polarity.
  • the ring magnetic steel is magnetized in the radial direction, and the opposite sides of the second ring magnetic steel and the third ring magnetic steel have opposite polarities.
  • the radial width of the assembly formed by the second annular magnetic steel, the annular soft magnetic steel and the third annular magnetic steel is w m
  • the first annular magnetic steel, the second annular magnetic steel, the annular soft magnetic steel, the third annular magnetic steel and the fourth annular magnetic steel abut against each other.
  • the first annular positioning assembly is formed by splicing several sub-positioning assemblies end to end.
  • the induction coil assembly further includes a magnetic isolation layer, the magnetic isolation layer is attached to the support and covers the induction coil and the first annular positioning assembly.
  • the magnetic isolation layer is a nanocrystalline layer or a soft magnetic layer.
  • the induction coil is formed on the support member by sticking or a laser process.
  • the second objective of the present application proposes a wireless charging system, including a wireless charging device and the above-mentioned electronic device, the wireless charging device includes a transmitting coil assembly, and the transmitting coil assembly includes a transmitting coil, wherein the induction coil is configured to receive power from the transmit coil.
  • the transmitting coil assembly further includes a second annular positioning assembly surrounding the outer circumference of the transmitting coil, and the second annular positioning assembly includes an annular soft magnetic base plate and an annular soft magnetic base plate stacked with the annular soft magnetic base plate.
  • a magnetic steel assembly, the annular magnetic steel assembly includes a fifth annular magnetic steel and a sixth annular magnetic steel, and the fifth annular magnetic steel and the sixth annular magnetic steel are arranged in turn from the inside to the outside in the radial direction, and the The fifth annular magnetic steel and the sixth annular magnetic steel are arranged at intervals; wherein, the fifth annular magnetic steel and the sixth annular magnetic steel are magnetized in the axial direction, and the fifth annular magnetic steel faces away from the annular soft magnetic steel
  • the polarity on the side of the bottom plate is opposite to the polarity on the side of the first annular magnetic steel facing the support member, and the polarity on the side of the sixth annular magnetic steel facing away from the annular soft magnetic bottom plate is the same as the polarity on the
  • the radial width of the fifth annular magnetic steel is consistent with the radial width of the first annular magnetic steel, and the radial width of the sixth annular magnetic steel is the same as that of the fourth annular magnetic steel.
  • the radial width is the same.
  • the embodiment of the present application adopts a ring-shaped soft magnetic steel sandwiched between the second ring-shaped magnetic steel and the third ring-shaped magnetic steel, and the first ring-shaped
  • the magnetization direction of the ring magnet and the fourth ring magnet improves the magnetic attraction force of the first ring positioning assembly, which facilitates the center alignment between the induction coil and the emission line acting on the induction coil, thereby improving the charging efficiency.
  • the positioning assembly can form a better shielding effect and reduce the mutual electromagnetic interference between the electronic components inside and outside the first annular positioning assembly.
  • FIG. 1 is a schematic diagram of a wireless charging system proposed by an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of an induction coil assembly according to an embodiment of the present application.
  • FIG. 3 is a schematic view of the section A-A in FIG. 2 .
  • FIG. 4 is a schematic structural diagram of a transmitting coil assembly according to an embodiment of the present application.
  • FIG. 5 is a schematic cross-sectional view of B-B in FIG. 4 .
  • FIG. 6 is a schematic diagram of the cooperation between the induction coil assembly and the transmission coil assembly.
  • FIG. 7 is a schematic diagram illustrating a comparison between the magnetic attraction force of the first annular positioning assembly proposed in the embodiment of the present application and the existing solution.
  • FIG. 8 is a schematic diagram illustrating a comparison between the average magnetic flux density outside the first annular positioning component proposed in the embodiment of the present application and the existing solution.
  • FIG. 9 is a schematic diagram illustrating the variation of the magnetic attraction force of the first annular positioning assembly with the thickness ratio of the first annular magnetic steel assembly and the first annular positioning assembly according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram showing the variation of the shielding effect of the first annular positioning assembly according to the thickness ratio of the first annular magnetic steel assembly and the first annular positioning assembly according to the embodiment of the application.
  • an implementation of the present application proposes a wireless charging system 100 , including an electronic device 10 and a wireless charging device 20 , the wireless charging device 20 is used for wirelessly charging the electronic device 10 , and the electronic device 10 includes an induction coil assembly 11 .
  • the coil assembly 11 includes an induction coil 111
  • the wireless charging device 20 includes a transmit coil assembly 21 including a transmit coil 211
  • the induction coil 111 is configured to receive power from the transmit coil 211 .
  • the electronic device 10 is a mobile phone
  • the wireless charging device 20 is a mobile phone wireless charging stand.
  • the transmitting coil 211 When the mobile phone is placed on the mobile phone wireless charging stand for charging, the transmitting coil 211 generates a certain current in the induction coil 111 through electromagnetic induction based on alternating current of a certain frequency. Thereby, the energy is transferred from the transmitting end to the receiving end, and power is supplied to the mobile phone from the wireless charging stand of the mobile phone.
  • the induction coil assembly 11 further includes a first annular positioning assembly 112 surrounding the outer circumference of the induction coil 111
  • the transmitting coil assembly 21 further includes a second annular positioning assembly 212 surrounding the outer circumference of the transmitting coil 211 .
  • the first annular positioning assembly 112 and the second annular positioning assembly 212 are used for magnetic positioning of the electronic device 10 and the wireless charging device 20, so that the electronic device 10 and the wireless charging device 20 are aligned by magnetic attraction, and in a certain area A restoring force is provided to automatically calibrate the center position to ensure the center alignment between the induction coil 111 and the transmitting coil 211 to improve charging efficiency.
  • the first annular positioning assembly 12 and the second annular positioning assembly 212 are also used to shield magnetic fields in other directions. to protect the rest of the electronic components from electromagnetic interference.
  • both the first annular positioning assembly 112 and the second annular positioning assembly 212 are annular.
  • the first annular positioning assembly 112 is provided with a first notch 1121 , and the first notch 1121 is used for the connection line with the induction coil 111 to extend to the outside of the first annular positioning assembly 112 .
  • the second annular positioning assembly 212 is provided with a second notch 2121 , and the second notch 2121 is used for the connecting wire of the transmitting coil 211 to extend to the outside of the second annular positioning assembly 212 .
  • the electronic device 10 includes a support member 12 , and the induction coil assembly 11 is provided on the support member 12 .
  • the support 12 can be a back shell of an electronic device.
  • the induction coil 111 is formed on the support member 12 by sticking or laser processing.
  • the first annular positioning assembly 112 includes a first annular magnetic steel 1121 , a second annular magnetic steel 1122 , an annular soft magnetic steel 1123 , a third annular magnetic steel 1124 and a fourth annular magnetic steel 1125, the first annular magnetic steel 1121, the second annular magnetic steel 1122, the annular soft magnetic steel 1123, the third annular magnetic steel 1124 and the fourth annular magnetic steel 1125 are sequentially arranged along the radial direction Y from the inside to the outside;
  • the ring magnet 1121 and the fourth ring magnet 1125 are magnetized in the axial direction X, and the polarity of the first ring magnet 1121 toward the support 12 is the same as the polarity of the fourth ring magnet 1125 toward the support 12
  • the second ring magnet 1122 and the third ring magnet 1124 are magnetized in the radial direction Y, and the opposite sides of the second ring magnet 1122 and the third ring magnet 1124 have opposite polar
  • the side of the first annular magnetic steel 1121 facing the support member 12 is the N pole
  • the side of the first annular magnetic steel 1121 facing away from the support member 12 is the S pole
  • the second annular magnetic steel 1122 is facing the first annular magnetic steel.
  • the side of the steel 1121 is the N pole
  • the side of the second annular magnetic steel 1122 facing the annular soft magnetic 1123 is the S pole
  • the side of the third annular magnetic steel 1124 facing the annular soft magnetic 1123 is the N pole
  • the third annular magnetic steel 1124 is the N pole
  • the side of 1124 facing the fourth ring magnet 1125 is the S pole
  • the side of the fourth ring magnet 1125 facing the support 12 is the S pole
  • the side of the fourth ring magnet 1125 facing away from the support 12 is the N pole.
  • FIG. 7 shows a schematic comparison of the magnetic attraction force of the first annular positioning assembly 112 proposed in the embodiment of the present application and the magnetic attraction force of the first annular positioning assembly in the prior art.
  • FIG. 8 shows the first annular positioning assembly proposed in the embodiment of the present application. A comparison of the average magnetic flux density in the outer test area of the positioning assembly 112 and the average magnetic flux density in the outer test area of the first annular positioning assembly in the prior art is shown. It can be seen from FIG. 7 that the magnetic attraction force of the first annular positioning assembly 112 proposed in the embodiment of the present application is improved by 47.9% compared to the existing solution. It can be seen from FIG. 8 that the shielding effect of the first annular positioning assembly 112 proposed in the embodiment of the present application is improved by 42.4% compared to the existing solution.
  • the annular soft magnetic steel 1123 is sandwiched between the second annular magnetic steel 1122 and the third annular magnetic steel 1124, and the first annular magnetic steel 1121, the second annular magnetic steel 1142, the third annular magnetic steel 1124 and the The magnetization direction of the fourth annular magnet 1125 improves the magnetic attraction force of the first annular positioning assembly 112, which facilitates the center alignment between the induction coil 111 and the transmitting coil 211 acting with the induction coil 111, thereby improving the charging efficiency, and the first The annular positioning assembly 112 can form a better shielding effect and reduce the mutual electromagnetic interference between the electronic components inside and outside the first annular positioning assembly 112 .
  • the radial width of the assembly formed by the second annular magnetic steel 1122, the annular soft magnetic steel 1123 and the third annular magnetic steel 1124 is w m
  • the radial width of the annular soft magnetic steel 1123 is w p
  • w p / w m C
  • FIG. 9 shows the change of the magnetic attraction force of the first annular positioning assembly 112 with the ratio of the annular soft magnetic 1123
  • FIG. 10 shows the change of the shielding effect of the first annular positioning assembly 112 with the ratio of the annular soft magnetic 1123
  • 9 and 10 show that the larger the proportion of the annular soft magnet 1123 is, the worse the magnetic attraction force and shielding effect of the first annular positioning assembly 112 are; The better the shielding effect is; when the ratio of the annular soft magnetic field varies in the interval below 0.5, the overall magnetic attraction force and shielding effect of the first annular positioning assembly 112 does not change much, and the magnetic attraction force of the first annular positioning assembly 112 can be better taken into account and shielding effects.
  • first annular magnetic steel 1121 adjacent ones of the first annular magnetic steel 1121 , the second annular magnetic steel 1122 , the annular soft magnetic steel 1123 , the third annular magnetic steel 1124 and the fourth annular magnetic steel 1125 are in contact with each other.
  • the first annular positioning assembly 112 is formed by splicing several sub-positioning assemblies 112a end to end.
  • the induction coil assembly 11 further includes a magnetic isolation layer 115 , and the magnetic isolation layer 115 is attached to the support 12 and covers the induction coil 111 and the first annular positioning assembly 112 .
  • the magnetic isolation layer 115 is fixed to the support 12 by means of sticking, the process is simple, and the yield of the finished product is improved.
  • the fixing method is convenient for the adjustment of the magnetic isolation layer 115, and the induction can be realized by adjusting the material of the magnetic isolation layer 115 later. Adjustment of coil self-inductance value.
  • the magnetic isolation layer 115 is a nanocrystalline layer or a soft magnetic layer.
  • the soft magnetic layer is made of metal soft magnetic material or ferrite soft magnetic material.
  • the optional metal soft magnetic materials include electromagnetic pure iron, silicon steel sheet, iron-nickel alloy and iron-aluminum alloy.
  • the second annular positioning assembly 212 includes an annular soft magnetic base plate 213 and an annular magnetic steel assembly 214 stacked with the annular soft magnetic base plate 213
  • the annular magnetic steel assembly 214 includes a fifth annular magnetic steel 2141 and the sixth annular magnetic steel 2142, the fifth annular magnetic steel 2141 and the sixth annular magnetic steel 2142 are arranged in turn from the inside to the outside along the radial direction Y, and the fifth annular magnetic steel 2141 and the sixth annular magnetic steel 2142 are arranged at intervals ;
  • the fifth annular magnetic steel 2141 and the sixth annular magnetic steel 2142 are magnetized along the axial direction X, and the polarity of the fifth annular magnetic steel 2141 facing the side of the annular soft magnetic base plate 213 and the first annular magnetic steel 1121 facing The polarity on the side of the support member 12 is opposite, and the polarity of the side of the sixth annular magnet 2142 facing away from the annular soft magnetic bottom plate
  • the side of the fifth annular magnetic steel 2141 facing the annular soft magnetic base plate 213 is the N pole
  • the side of the fifth annular magnetic steel 2141 facing away from the annular soft magnetic base plate 213 is the S pole
  • the sixth annular magnetic steel 2142 facing the One side of the annular soft magnetic base plate 213 is the S pole
  • the side of the sixth annular magnetic steel 2142 facing away from the annular soft magnetic base plate 213 is the N pole.
  • the annular soft magnetic bottom plate 213 is made of metal soft magnetic material or ferrite soft magnetic material.
  • the optional metal soft magnetic materials include electromagnetic pure iron, silicon steel sheet, iron-nickel alloy and iron-aluminum alloy.
  • the second annular positioning assembly 212 is formed by splicing several sub-positioning assemblies 212a end to end.
  • the fifth ring magnet 2141 is opposite to the first ring magnet 1121
  • the sixth ring magnet 2142 is opposite to the fourth ring magnet 1125 .
  • the radial width E 1 of the fifth annular magnetic steel 2141 is consistent with the radial width F 1 of the first annular magnetic steel 1121
  • the radial width E 2 of the sixth annular magnetic steel 2142 is the same as that of the fourth annular magnetic steel 1125 .
  • the radial width F2 is consistent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

一种电子设备(10)，包括支撑件(12)和设于支撑件(12)的感应线圈组件(11)，感应线圈组件(11)包括感应线圈(111)和环绕于感应线圈(111)外周的第一环形定位组件(112)，第一环形定位组件(112)包括第一环形磁钢(1121)、第二环形磁钢(1122)、环形软磁(1123)、第三环形磁钢(1124)及第四环形磁钢(1125)，第一环形磁钢(1121)、第二环形磁钢(1122)、环形软磁(1123)、第三环形磁钢(1124)及第四环形磁钢(1125)沿径向由里向外依次排布；第一环形磁钢(1121)和第四环形磁钢(1125)沿轴向充磁，且第一环形磁钢(1121)朝向支撑件(12)一侧的极性与第四环形磁钢(1125)朝向支撑件(12)一侧的极性相反，第二环形磁钢(1122)和第三环形磁钢(1124)沿径向充磁，且第二环形磁钢(1122)和第三环形磁钢(1124)相向一侧的极性相反。该电子设备(10)能够有效提升第一环形定位组件(112)的磁吸力和电磁屏蔽效果。还涉及一种无线充电系统(100)。

Description

电子设备及无线充电系统 技术领域
本申请涉及无线充电领域，尤其涉及电子设备及无线充电系统。
 背景技术
现有的无线充电系统通过在电子设备设置第一磁性定位组件，在无线充电设备设置第二磁性定位组件，电子设备和无线充电设备之间通过第一磁性定位组件和第二磁性定位组件的磁吸实现发射线圈与感应线圈之间的自动对准，以提高充电效率，并通过磁性定位组件实现电磁屏蔽，避免磁性定位组件内外侧的电子部件受到电磁影响。然而，现有电子设备的第一磁性定位组件由于结构限制，形成的磁吸力小，电磁屏蔽效果不佳。
因此，有必要提出一种电子设备来解决上述问题。
 技术问题
现有电子设备的第一磁性定位组件由于结构限制，磁吸力小，不利于发射线圈与感应线圈之间的自动对准且电磁屏蔽效果不好。
 技术解决方案
本申请的目的之一在于提出一种电子设备，其可以有效提升第一环形定位组件的磁吸力和电磁屏蔽效果。
本申请的目的之一采用如下技术方案实现：一种电子设备，包括支撑件和设于所述支撑件的感应线圈组件，所述感应线圈组件包括感应线圈和环绕于所述感应线圈外周的第一环形定位组件，所述第一环形定位组件包括第一环形磁钢、第二环形磁钢、环形软磁、第三环形磁钢及第四环形磁钢，所述第一环形磁钢、第二环形磁钢、环形软磁、第三环形磁钢及第四环形磁钢沿径向由里向外依次排布；其中，所述第一环形磁钢和第四环形磁钢沿轴向充磁，且所述第一环形磁钢朝向所述支撑件一侧的极性与所述第四环形磁钢朝向所述支撑件一侧的极性相反，所述第二环形磁钢和第三环形磁钢沿径向充磁，且所述第二环形磁钢和第三环形磁钢相向一侧的极性相反。
作为一种改进方式，所述第二环形磁钢、环形软磁及第三环形磁钢形成的组合件的径向宽度为w m，所述环形软磁的径向宽度为w p，其中w p/w m=C，其中，0<C≤0.5。
作为一种改进方式，所述第一环形磁钢、第二环形磁钢、环形软磁、第三环形磁钢及第四环形磁钢相邻两者之间相互抵接。
作为一种改进方式，所述第一环形定位组件由若干个子定位组件首尾拼接形成。
作为一种改进方式，所述感应线圈组件还包括磁隔离层，所述磁隔离层贴附于所述支撑件并覆盖所述感应线圈和所述第一环形定位组件。
作为一种改进方式，所述磁隔离层为纳米晶层或软磁层。
作为一种改进方式，所述感应线圈通过粘贴或者激光镭射工艺成型于所述支撑件。
本申请的目的之二提出了一种无线充电系统，包括无线充电设备和上述的电子设备，所述无线充电设备包括发射线圈组件，所述发射线圈组件包括发射线圈，其中，所述感应线圈被配置为从所述发射线圈接收功率。
作为一种改进方式，所述发射线圈组件还包括环绕于所述发射线圈外周的第二环形定位组件，所述第二环形定位组件包括环形软磁底板和与所述环形软磁底板层叠的环形磁钢组件，所述环形磁钢组件包括第五环形磁钢和第六环形磁钢，所述第五环形磁钢和第六环形磁钢沿径向由里向外依次排布，且所述第五环形磁钢和第六环形磁钢间隔设置；其中，所述第五环形磁钢和第六环形磁钢沿轴向充磁，且所述第五环形磁钢背对所述环形软磁底板一侧的极性与所述第一环形磁钢朝向所述支撑件一侧的极性相反，所述第六环形磁钢背对所述环形软磁底板一侧的极性与所述第四环形磁钢朝向所述支撑件一侧的极性相反。
作为一种改进方式，所述第五环形磁钢的径向宽度与所述第一环形磁钢的径向宽度一致，所述第六环形磁钢的径向宽度与所述第四环形磁钢的径向宽度一致。
 有益效果
本申请实施方式相对于现有技术而言，通过设置在第二环形磁钢和第三环形磁钢之间夹设环形软磁，并设置第一环形磁钢、第二环形磁钢、第三环形磁钢及第四环形磁钢充磁方向，提升了第一环形定位组件的磁吸力，便于感应线圈和与感应线圈作用的发射线之间的中心对齐，从而提高充电效率，而且第一环形定位组件可以形成较好的屏蔽效果，减小了第一环形定位组件内外侧的电子部件之间相互的电磁干扰。
 附图说明
图1为本申请实施例提出的无线充电系统的示意图。
图2为本申请实施例提出的感应线圈组件的结构示意图。
图3为图2中A-A截面示意图。
图4为本申请实施例提出的发射线圈组件的结构示意图。
图5为图4中B-B截面示意图。
图6为感应线圈组件与发射线圈组件的配合示意图。
图7为本申请实施例提出的第一环形定位组件的磁吸力与现有方案的对比示意图。
图8为本申请实施例提出的第一环形定位组件外侧的平均磁通密度与现有方案的对比示意图。
图9为本申请实施例提出的第一环形定位组件的磁吸力随第一环形磁钢组件与第一环形定位组件的厚度比的变化示意图。
图10为本申请实施例提出的第一环形定位组件的屏蔽效果随第一环形磁钢组件与第一环形定位组件的厚度比的变化示意图。
 本发明的实施方式
下面结合附图和实施方式对本申请作进一步说明。
如图1所示，本申请实施提出一种无线充电系统100，包括电子设备10和无线充电设备20，无线充电设备20用于给电子设备10无线充电，电子设备10包括感应线圈组件11，感应线圈组件11包括感应线圈111，无线充电设备20包括发射线圈组件21，发射线圈组件21包括发射线圈211，感应线圈111被配置为从发射线圈211接收功率。
例如，电子设备10为手机，无线充电设备20为手机无线充电座，手机放置在手机无线充电座上充电时，发射线圈211基于一定频率的交流电通过电磁感应在感应线圈111中产生一定的电流，从而将能量从发射端转移到接收端，实现从手机无线充电座向手机进行供电。
可选地，感应线圈组件11还包括环绕于感应线圈111外周的第一环形定位组件112，发射线圈组件21还包括环绕于发射线圈211外周的第二环形定位组件212。第一环形定位组件112和第二环形定位组件212用于电子设备10和无线充电设备20的磁吸定位，使得电子设备10和无线充电设备20之间通过磁吸力进行对准，并且在一定区域内提供回复力自动校准中心位置，保证感应线圈111和发射线圈211之间中心对齐，以提高充电效率，此外，第一环形定位组件12和第二环形定位组件212还用于屏蔽其他方向的磁场以保护其余电子部件不受电磁干扰。
可选地，第一环形定位组件112和第二环形定位组件212均呈圆环状。
可选地，第一环形定位组件112设有第一缺口1121，第一缺口1121用于与感应线圈111的连接线延伸到第一环形定位组件112的外部。第二环形定位组件212设有第二缺口2121，第二缺口2121用于发射线圈211的连接线延伸到第二环形定位组件212的外部。
可选地，电子设备10包括支撑件12，感应线圈组件11设于支撑件12。该支撑件12可以为电子设备的背壳。
可选地，感应线圈111通过粘贴或者激光镭射工艺成型于支撑件12。
如图2-10所示，可选地，第一环形定位组件112包括第一环形磁钢1121、第二环形磁钢1122、环形软磁1123、第三环形磁钢1124及第四环形磁钢1125，第一环形磁钢1121、第二环形磁钢1122、环形软磁1123、第三环形磁钢1124及第四环形磁钢1125沿径向Y由里向外依次排布；其中，第一环形磁钢1121和第四环形磁钢1125沿轴向X充磁，且第一环形磁钢1121朝向支撑件12一侧的极性与第四环形磁钢1125朝向支撑件12一侧的极性相反，第二环形磁钢1122和第三环形磁钢1124沿径向Y充磁，且第二环形磁钢1122和第三环形磁钢1124相向一侧的极性相反。
示例性地，第一环形磁钢1121朝向支撑件12的一侧为N极，第一环形磁钢1121背对支撑件12的一侧为S极，第二环形磁钢1122朝向第一环形磁钢1121的一侧为N极，第二环形磁钢1122朝向环形软磁1123的一侧为S极，第三环形磁钢1124朝向环形软磁1123的一侧为N极，第三环形磁钢1124朝向第四环形磁钢1125的一侧为S极，第四环形磁钢1125朝向支撑件12的一侧为S极，第四环形磁钢1125背对支撑件12的一侧为N极。
图7展示的本申请实施例提出的第一环形定位组件112的磁吸力与现有方案的第一环形定位组件的磁吸力的对比示意，图8展示的是本申请实施例提出的第一环形定位组件112的外侧测试区域内的平均磁通密度和现有方案的第一环形定位组件的外侧测试区域内的平均磁通密度的对比示意。由图7可以看出，本申请实施例提出的第一环形定位组件112的磁吸力相对于现有方案有47.9%的提升。由图8可以看出，本申请实施例提出的第一环形定位组件112的屏蔽效果相对于现有方案有42.4%的提升。
因而，通过设置在第二环形磁钢1122和第三环形磁钢1124之间夹设环形软磁1123，并设置第一环形磁钢1121、第二环形磁钢1142、第三环形磁钢1124及第四环形磁钢1125充磁方向，提升了第一环形定位组件112的磁吸力，便于感应线圈111和与感应线圈111作用的发射线圈211之间的中心对齐，从而提高充电效率，而且第一环形定位组件112可以形成较好的屏蔽效果，减小了第一环形定位组件112内外侧的电子部件之间相互的电磁干扰。
可选地，第二环形磁钢1122、环形软磁1123及第三环形磁钢1124形成的组合件的径向宽度为w m，环形软磁1123的径向宽度为w p，其中w p/w m=C，其中，0<C≤0.5。
图9展示的是第一环形定位组件112的磁吸力随环形软磁1123占比的变化示意，图10展示的是第一环形定位组件112的屏蔽效果随环形软磁1123占比的变化示意。图9和图10表明，环形软磁1123占比越大，第一环形定位组件112的磁吸力及屏蔽效果越差；环形软磁1123占比越小，第一环形定位组件112的磁吸力及屏蔽效果越好；当环形软磁占比在0.5以下的区间变化时，第一环形定位组件112的磁吸力及屏蔽效果整体变化不大，可以较好地兼顾第一环形定位组件112的磁吸力和屏蔽效果的问题。
可选地，第一环形磁钢1121、第二环形磁钢1122、环形软磁1123、第三环形磁钢1124及第四环形磁钢1125相邻两者之间相互抵接。
可选地，第一环形定位组件112由若干个子定位组件112a首尾拼接形成。
可选地，感应线圈组件11还包括磁隔离层115，磁隔离层115贴附于支撑件12并覆盖感应线圈111和第一环形定位组件112。磁隔离层115采用粘贴的方式固定于支撑件12，工艺简单，提高了成品的良率，而且，该固定方式便于磁隔离层115的调整，后期可以通过调整磁隔离层115的材料来实现感应线圈自感值的调整。
可选地，磁隔离层115为纳米晶层或软磁层。可选地，软磁层采用金属软磁材料或铁氧体软磁材料制成。可选用的金属软磁材料有电磁纯铁、硅钢片、铁镍合金和铁铝合金。
如图2-6所示，可选地，第二环形定位组件212包括环形软磁底板213和与环形软磁底板213层叠的环形磁钢组件214，环形磁钢组件214包括第五环形磁钢2141和第六环形磁钢2142，第五环形磁钢2141和第六环形磁钢2142沿径向Y由里向外依次排布，且第五环形磁钢2141和第六环形磁钢2142间隔设置；其中，第五环形磁钢2141和第六环形磁钢2142沿轴向X充磁，且第五环形磁钢2141背对环形软磁底板213一侧的极性与第一环形磁钢1121朝向支撑件12一侧的极性相反，第六环形磁钢2142背对环形软磁底板213一侧的极性与第四环形磁钢1125朝向支撑件12一侧的极性相反。
示例性地，第五环形磁钢2141朝向环形软磁底板213的一侧为N极，第五环形磁钢2141背对环形软磁底板213的一侧为S极，第六环形磁钢2142朝向环形软磁底板213的一侧为S极，第六环形磁钢2142背对环形软磁底板213的一侧为N极。
可选地，环形软磁底板213采用金属软磁材料或铁氧体软磁材料制成。可选用的金属软磁材料有电磁纯铁、硅钢片、铁镍合金和铁铝合金。
可选地，第二环形定位组件212由若干个子定位组件212a首尾拼接形成。
当感应线圈组件11与发射线圈组件21对准进行充电时，第五环形磁钢2141与第一环形磁钢1121相对，第六环形磁钢2142与第四环形磁钢1125相对。
可选地，第五环形磁钢2141的径向宽度E 1与第一环形磁钢1121的径向宽度F 1一致，第六环形磁钢2142的径向宽度E 2与第四环形磁钢1125的径向宽度F 2一致。
以上所述的仅是本申请的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本申请创造构思的前提下，还可以做出改进，但这些均属于本申请的保护范围。

Claims (10)

  1. 一种电子设备，包括支撑件和设于所述支撑件的感应线圈组件，其特征在于，所述感应线圈组件包括感应线圈和环绕于所述感应线圈外周的第一环形定位组件，所述第一环形定位组件包括第一环形磁钢、第二环形磁钢、环形软磁、第三环形磁钢及第四环形磁钢，所述第一环形磁钢、第二环形磁钢、环形软磁、第三环形磁钢及第四环形磁钢沿径向由里向外依次排布；
    其中，所述第一环形磁钢和第四环形磁钢沿轴向充磁，且所述第一环形磁钢朝向所述支撑件一侧的极性与所述第四环形磁钢朝向所述支撑件一侧的极性相反，所述第二环形磁钢和第三环形磁钢沿径向充磁，且所述第二环形磁钢和第三环形磁钢相向一侧的极性相反。
  2. 根据权利要求1所述的电子设备，其特征在于，所述第二环形磁钢、环形软磁及第三环形磁钢形成的组合件的径向宽度为w m，所述环形软磁的径向宽度为w p，其中w p/w m=C，其中，0<C≤0.5。
  3. 根据权利要求1所述的电子设备，其特征在于，所述第一环形磁钢、第二环形磁钢、环形软磁、第三环形磁钢及第四环形磁钢相邻两者之间相互抵接。
  4. 根据权利要求1所述的电子设备，其特征在于，所述第一环形定位组件由若干个子定位组件首尾拼接形成。
  5. 根据权利要求1所述的电子设备，其特征在于，所述感应线圈组件还包括磁隔离层，所述磁隔离层贴附于所述支撑件并覆盖所述感应线圈和所述第一环形定位组件。
  6. 根据权利要求5所述的电子设备，其特征在于，所述磁隔离层为纳米晶层或软磁层。
  7. 根据权利要求1所述的电子设备，其特征在于，所述感应线圈通过粘贴或者激光镭射工艺成型于所述支撑件。
  8. 一种无线充电系统，其特征在于，包括无线充电设备和权利要求1至7任一项所述的电子设备，所述无线充电设备包括发射线圈组件，所述发射线圈组件包括发射线圈，其中，所述感应线圈被配置为从所述发射线圈接收功率。
  9. 根据权利要求8所述的无线充电系统，其特征在于，所述发射线圈组件还包括环绕于所述发射线圈外周的第二环形定位组件，所述第二环形定位组件包括环形软磁底板和与所述环形软磁底板层叠的环形磁钢组件，所述环形磁钢组件包括第五环形磁钢和第六环形磁钢，所述第五环形磁钢和第六环形磁钢沿径向由里向外依次排布，且所述第五环形磁钢和第六环形磁钢间隔设置；
    其中，所述第五环形磁钢和第六环形磁钢沿轴向充磁，且所述第五环形磁钢背对所述环形软磁底板一侧的极性与所述第一环形磁钢朝向所述支撑件一侧的极性相反，所述第六环形磁钢背对所述环形软磁底板一侧的极性与所述第四环形磁钢朝向所述支撑件一侧的极性相反。
  10. 根据权利要求9所述的无线充电系统，其特征在于，所述第五环形磁钢的径向宽度与所述第一环形磁钢的径向宽度一致，所述第六环形磁钢的径向宽度与所述第四环形磁钢的径向宽度一致。
PCT/CN2020/133104 2020-11-23 2020-12-01 电子设备及无线充电系统 WO2022104915A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011323814.0A CN112510845B (zh) 2020-11-23 2020-11-23 电子设备及无线充电系统
CN202011323814.0 2020-11-23

Publications (1)

Publication Number Publication Date
WO2022104915A1 true WO2022104915A1 (zh) 2022-05-27

Family

ID=74959595

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/133104 WO2022104915A1 (zh) 2020-11-23 2020-12-01 电子设备及无线充电系统

Country Status (2)

Country Link
CN (1) CN112510845B (zh)
WO (1) WO2022104915A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112865343A (zh) * 2021-03-23 2021-05-28 宁波微鹅电子科技有限公司 一种无线电能传输装置
CN115498714A (zh) * 2021-06-18 2022-12-20 北京小米移动软件有限公司 充电器、充电系统及充电控制方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102957214A (zh) * 2011-08-18 2013-03-06 富达通科技股份有限公司 电子装置的无线充电线圈结构
WO2017072163A1 (de) * 2015-10-29 2017-05-04 Tecflower Ag Halte- und ladevorrichtung für ein mobiles endgerät
CN207117319U (zh) * 2017-07-04 2018-03-16 厦门盈趣科技股份有限公司 一种通过磁铁吸附固定的无线充电装置
US20190006893A1 (en) * 2017-06-28 2019-01-03 Dell Products L.P. Magnetic self-aligning coil centering for wireless charging
KR102047057B1 (ko) * 2019-10-30 2019-11-20 권진아 무선충전 보조 배터리

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201238213Y (zh) * 2008-06-11 2009-05-13 赵佰淼 管式永磁同步直线电动机的径向磁路组合次级
WO2013092305A1 (en) * 2011-12-22 2013-06-27 Dsm Ip Assets B.V. Inductive wireless charging system
AU2015236298B2 (en) * 2014-03-24 2018-08-09 Apple Inc. Magnetic shielding in inductive power transfer
CN208127901U (zh) * 2018-01-19 2018-11-20 柯忠伟 磁吸感应式手机无线充电装置
CN110690038A (zh) * 2019-09-18 2020-01-14 许继电源有限公司 一种无线充电装置
CN110829612A (zh) * 2019-11-20 2020-02-21 歌尔科技有限公司 无线充电系统、无线充电器和电子设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102957214A (zh) * 2011-08-18 2013-03-06 富达通科技股份有限公司 电子装置的无线充电线圈结构
WO2017072163A1 (de) * 2015-10-29 2017-05-04 Tecflower Ag Halte- und ladevorrichtung für ein mobiles endgerät
US20190006893A1 (en) * 2017-06-28 2019-01-03 Dell Products L.P. Magnetic self-aligning coil centering for wireless charging
CN207117319U (zh) * 2017-07-04 2018-03-16 厦门盈趣科技股份有限公司 一种通过磁铁吸附固定的无线充电装置
KR102047057B1 (ko) * 2019-10-30 2019-11-20 권진아 무선충전 보조 배터리

Also Published As

Publication number Publication date
CN112510845A (zh) 2021-03-16
CN112510845B (zh) 2022-12-06

Similar Documents

Publication Publication Date Title
US10218222B2 (en) Non-contact charging module having a wireless charging coil and a magnetic sheet
WO2022104915A1 (zh) 电子设备及无线充电系统
JP5845405B2 (ja) 受信側非接触充電モジュール及び受信側非接触充電機器
JP5845406B2 (ja) 受信側非接触充電モジュール及び受信側非接触充電機器
WO2022104911A1 (zh) 电子设备及无线充电系统
JP4900525B1 (ja) 非接触充電モジュール及びこれを備えた送信側非接触充電機器と受信側非接触充電機器
CN112803603B (zh) 电子设备及无线充电系统
WO2022104916A1 (zh) 电子设备及无线充电系统
CN112803602B (zh) 电子设备及无线充电系统
CN215580560U (zh) 一种无线充电磁定位结构、无线充电模组及无线充电器
JP2024508757A (ja) ワイヤレス電力伝送効率を改善するためのアクセサリデバイス
CN214850646U (zh) 一种无线充电磁定位结构、无线充电模组及无线充电器
CN112803601B (zh) 电子设备及无线充电系统
CN213661280U (zh) 无线充电辅助装置、无线电能发射套件和家具
CN216390610U (zh) 线圈单元、无线充电系统、充电器及用电设备
CN211701625U (zh) 一种具有磁铁的装置
CN215580561U (zh) 一种无线充电磁定位结构、无线充电模组及无线充电器
CN213661283U (zh) 无线充电辅助装置、无线电能发射套件和家具
CN215580559U (zh) 一种无线充电磁定位结构、无线充电模组及无线充电器
CN112803601A (zh) 电子设备及无线充电系统
CN112803608A (zh) 一种无线充电磁定位结构、无线充电模组及无线充电器
CN112803607A (zh) 一种无线充电磁定位结构、无线充电模组及无线充电器
JP5845407B2 (ja) 受信側非接触充電モジュール及び受信側非接触充電機器
CN112803609A (zh) 一种无线充电磁定位结构、无线充电模组及无线充电器
WO2023202167A1 (zh) 无线充电装置、电子设备以及电子设备保护壳

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20962206

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20962206

Country of ref document: EP

Kind code of ref document: A1