WO2016190708A1 - Unité d'antenne d'envoi d'énergie sans fil et module d'envoi d'énergie sans fil la comprenant - Google Patents

Unité d'antenne d'envoi d'énergie sans fil et module d'envoi d'énergie sans fil la comprenant Download PDF

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Publication number
WO2016190708A1
WO2016190708A1 PCT/KR2016/005646 KR2016005646W WO2016190708A1 WO 2016190708 A1 WO2016190708 A1 WO 2016190708A1 KR 2016005646 W KR2016005646 W KR 2016005646W WO 2016190708 A1 WO2016190708 A1 WO 2016190708A1
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WO
WIPO (PCT)
Prior art keywords
coil
unit
wireless power
coil unit
power transmission
Prior art date
Application number
PCT/KR2016/005646
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English (en)
Korean (ko)
Inventor
허태현
Original Assignee
주식회사 아모센스
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Filing date
Publication date
Application filed by 주식회사 아모센스 filed Critical 주식회사 아모센스
Publication of WO2016190708A1 publication Critical patent/WO2016190708A1/fr

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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
    • H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
    • 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
    • H01F27/2823—Wires
    • H01F27/2828—Construction of conductive connections, of leads
    • 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
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • 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
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • 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
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters

Definitions

  • the present invention relates to an antenna unit for wireless power transmission and a wireless power transmission module including the same.
  • the wireless charging is performed by a wireless power receiving module embedded in the portable terminal and a wireless power transmitting module supplying power to the wireless power receiving module.
  • the power is transferred to the wireless power receiving module using an inductive coupling method based on electromagnetic induction through the wireless power signal transmitted from the wireless power transmitting module, thereby charging the battery built in the portable terminal.
  • the wireless power signal is transmitted and received through an antenna provided in the wireless power transmission module and the wireless power reception module, respectively.
  • an antenna may have a predetermined pattern formed on one surface of a circuit board or may be in the form of a flat coil in which a wire rod made of a conductive material is wound a plurality of times.
  • the wireless power receiving module is embedded in a portable terminal having a limited size
  • the receiving antenna included in the wireless power receiving module is also limited in size. Accordingly, the size (particularly, area) of the transmitting antenna of the wireless power transmitting module matched with the receiving antenna must be limited. Therefore, in order to increase the wireless charging efficiency, it is necessary to lower the resistance while satisfying the inductance required at a predetermined size.
  • the antenna when the antenna is made of a flat coil, when a coil having a thick wire diameter is used, a cross-sectional area is relatively increased as compared to a coil having a thin wire diameter, thereby reducing the overall resistance.
  • the size of the overall flat coil is limited, if the diameter of the coil is increased, the number of turns of the coil is inevitably reduced, and thus, the total length of the coil is inevitably reduced.
  • the present invention has been made in view of the above, and when the antenna unit is made of a flat coil, wireless antenna unit for wireless power transmission that can satisfy the necessary conditions for wireless charging within a limited size while increasing the charging efficiency and includes the same Its purpose is to provide a wireless power transmission module.
  • this invention consists of the multilayer coil by which the conductive member which has a predetermined length wound is comprised of at least 3 layers or more, and a pair of 1st lead part and 2nd lead part in the both end side are provided.
  • a first coil unit having one conductive member wound a plurality of times and formed of a two-layered flat coil;
  • a second coil unit having a pair of third lead parts and a fourth lead part on both end sides of which one conductive member is wound a plurality of times and formed of one or more layers of flat coils.
  • Silver is laminated on the second coil unit so that one surface is in contact with one surface of the second coil unit and the second lead portion provides an antenna unit for wireless power transmission directly connected to the third lead portion.
  • the second coil unit may be formed of a single layer flat coil.
  • the second lead portion is a lead portion extending a predetermined length outward from the side of the plate-shaped coil in contact with the second coil unit of the first coil unit, the third lead portion body side portion of the second coil unit
  • the lead part extending a predetermined length from the outside, the fourth lead portion may be a lead portion extending from one side of the body of the second coil unit to cross one surface of the second coil unit that is not interviewed with the first coil unit.
  • the second coil unit may be formed of two layers of flat coils in which one conductive member is wound a plurality of times.
  • the wireless power transmission antenna unit may be formed of four layers of flat coils in which the first coil unit is stacked on one surface of the second coil unit, and the second lead portion and the third lead portion are formed of the four layers. It may be a lead portion extending a predetermined length from the side of each of the two flat coils of the planar coils to the outside.
  • an adhesive layer may be disposed on a contact surface of the first coil unit and the second coil unit, and the adhesive layer may include a non-conductive component.
  • the present invention is the antenna unit for transmitting a wireless power is a planar coil wound around a conductive member having a predetermined length is composed of a multi-layer of at least three or more layers and transmits wireless power; And a shielding unit disposed on one surface of the wireless power transmission antenna unit, wherein the wireless power transmission antenna unit includes one conductive member having a pair of first and second lead portions at both ends.
  • the first coil unit is wound a plurality of times to form a two-layer flat coil;
  • a second coil unit having a pair of third lead parts and a fourth lead part on both end sides of which one conductive member is wound a plurality of times and formed of one or more layers of flat coils.
  • Silver is laminated on the second coil unit so that one surface is in contact with one surface of the second coil unit and the second lead portion provides a wireless power transmission module that is directly connected to the third lead portion.
  • the shielding unit may include an accommodating groove formed in a predetermined depth on one surface thereof, and a part or the entire length of the fourth lead portion may be inserted into the accommodating groove.
  • the shielding unit may be any one of a ribbon sheet, a ferrite sheet and a polymer sheet including at least one or more of an amorphous alloy and a nano-crystalline alloy, the ferrite sheet is one of Mn-Zn ferrite and Ni-Zn ferrite It may include more than one species.
  • the charging efficiency can be increased by reducing the overall resistance while satisfying the inductance required for wireless charging even within a limited size.
  • FIG. 1 is a view showing a wireless power transmission module according to an embodiment of the present invention
  • FIG. 2 is a cross-sectional view of FIG.
  • FIG. 3 is a view showing an antenna unit for wireless power transmission according to an embodiment of the present invention.
  • FIG. 4 is a view showing a state in which the first coil unit and the second coil unit are separated from FIG. 3;
  • FIG. 5 is a view showing an antenna unit for wireless power transmission according to another embodiment of the present invention.
  • FIG. 6 is a view illustrating a state in which a first coil unit and a second coil unit are separated from FIG. 5; FIG.
  • FIG. 7 is a view showing a case in which three wireless power transmission antenna units are provided in a wireless power transmission module according to an embodiment of the present invention.
  • FIG. 8 is a cross-sectional view of FIG. 7, and
  • FIG. 9 is a detailed cross-sectional view showing a case in which the shielding unit applied to the wireless power transmission module according to the present invention has a multilayer structure.
  • Wireless power transmission module (100,200) includes an antenna unit (110,210) and a shielding unit 120 for wireless power transmission as shown in Figs.
  • the wireless power transmission antenna units 110 and 210 may be disposed on at least one surface of the shielding unit 120, and may be provided as a flat coil in which a conductive member having a predetermined length is wound a plurality of times. One surface of the 120 may be fixed through the adhesive layer 124.
  • the conductive member may be made of a metallic material having a conductivity such as copper, may be made of one strand having a predetermined wire diameter or may be a plurality of strands twisted along the length direction.
  • the wireless power transmission antenna units 110 and 210 may transmit a wireless power signal to an electronic device to transmit a wireless coil to a battery of the electronic device by using an inductive coupling method or a magnetic resonance method based on an electromagnetic induction phenomenon. Tx coil).
  • the antenna unit 110,210 for wireless power transmission is the conductive member is wound in a clockwise or counterclockwise direction, the polygonal flat coils such as circular, elliptical, spiral or square, three or more layers are stacked It may be provided in the form.
  • the wireless power transmission antenna units (110, 210) are stacked so as to interview the first coil unit 111 and one surface of the first coil unit 111 and is connected in series with the first coil unit 111
  • the second coil units 112 and 212 may be included.
  • first coil unit 111 and the second coil units 112 and 212 may have a form in which one conductive member is wound a plurality of times.
  • one conductive member may be wound a plurality of times and may be formed as a two-layered flat coil, and both ends of the first coil unit 111 may include a flat coil configured as a lower layer and a flat coil configured as an upper layer.
  • the first lead portion 111a and the second lead portion 111b may respectively extend a predetermined length from the body side of the body.
  • the second lead portion 111b of the first coil unit 111 has a flat plate type in which one surface is interviewed with the second coil units 112 and 212 among the flat coils constituting the upper layer and the flat coils constituting the lower layer. It may be a lead portion drawn outward from the body of the coil.
  • the second coil units 112 and 212 may also be formed as flat coils in which one conductive member having a third lead portion 112a and a fourth lead portion 112b is wound several times.
  • the second coil units 112 and 212 may be formed of a single-layer flat coil as shown in FIGS. 1 to 4, and the first coil unit 111 and the first coil unit 111 as shown in FIGS. 5 to 8. It may likewise be formed from two layers of flat coils.
  • the third lead portion 112a may extend a predetermined length from the body side of the flat coil to the outside, and the fourth lead portion 112b may extend from a central portion of the flat coil body to cross one surface of the flat coil body.
  • both end portions of the second coil unit 212 may include a flat coil having a lower layer and a flat coil having an upper layer.
  • the third lead portion 112a and the fourth lead portion 112b may extend from the body side of the predetermined length, respectively.
  • the second lead part 111b and the second coil units 112 and 212 of the first coil unit 111 are stacked.
  • the third lead portion 112a of the wireless power transmission antenna unit (110,210) can be implemented in the form of a three-layered or four-layered coil coil.
  • the first coil unit 111 and the second coil unit 112 and 212 may be disposed on the contact surfaces of the first coil unit 111 and the second coil unit 112 and 212 by including an adhesive layer 113 including a non-conductive component. Can be integrated.
  • first coil unit 111 and the second coil unit (112, 212) is any one selected from the first lead portion and the second lead portion and any one selected from the third lead portion and the fourth lead portion It may be in the form of being connected.
  • the second lead portion 111b of the first coil unit 111 and the third lead portion 112a of the second coil units 112 and 212 may be connected to each other, and the second lead portion 111b may be connected to each other.
  • the third lead part 112a may be connected to each other by soldering or welding.
  • the second coil unit 112 formed of a single layer flat coil is laminated on one surface of the first coil unit 111, one surface of the first coil unit 111 and one surface of the second coil unit 112 are stacked. This is to ensure that the contact is completely.
  • a fourth lead part 112b extending outward from the center of the body of the flat coil forming the second coil unit 112 may be formed.
  • the opposite side of the surface is disposed may be interviewed with one surface of the first coil unit 111.
  • the fixing area by the adhesive layer 113 may be increased by widening the contact area of the first coil unit 111 and the second coil unit 112.
  • the second lead part 111b and the third lead part 112a may serve as a connecting part for electrically connecting the first coil unit 111 and the second coil unit 112 and 212 to each other.
  • the first lead part 111a of the first coil unit 111 and the fourth lead part 112b of the second coil units 112 and 212 may serve as an input / output of power supplied from the outside.
  • terminal portions for electrical connection with an external device may be separately formed at end portions of the first lead portion 111a and the fourth lead portion 112b.
  • the antenna units 110 and 210 for wireless power transmission include a first coil unit 111 formed of two layers of flat coils and a second coil unit 112 and 212 formed of a single layer or two layers of flat coils.
  • a wireless power transmission antenna that performs the role of a radiator by connecting the first coil unit 111 and the second coil units 112 and 212 in series with each other by using a flat coil of three or more layers.
  • the conductive member constituting the flat coil can have a thicker wire diameter without increasing the size (or winding area) of the flat coil compared with the conventional single-layer or two-layer flat coil.
  • the cross-sectional area of the conductive member to be used is increased relative to the conventional one to reduce the internal resistance to reduce the heat generated by the wireless power transmission antenna unit (110, 210) during wireless charging, according to the reduction of the resistance Increasing the power will not only shorten the charging time, but also increase the overall charging efficiency.
  • the antenna unit (110,210) for wireless power transmission according to the present invention is formed by three or more layers of flat coils, even if the wire diameter of the conductive member used is increased, the reduced length of the conductive member wound on the same layer increases the number of stacked Can be compensated for.
  • the entire length of the conductive member constituting the wireless power transmission antenna unit (110, 210) can have the same length as the conventional or longer length can be used to satisfy the required inductance and to implement a variety of design conditions have.
  • the wireless power transmission antenna units 110 and 210 according to the present invention is shown and described as being implemented as a three-layer or four-layer flat coil, but is not limited thereto and at least one first coil unit ( 111) and the second coil units 112 and 212 are appropriately used, and the above-described lamination and connection method may be applied to realize a planar coil of five or more layers.
  • the shielding unit 120 is formed of a plate-like member having a predetermined area, it may be disposed on one surface of the antenna unit (110, 210) for wireless power transmission.
  • the shielding unit 120 shields the magnetic field generated by the wireless power transmission antenna units 110 and 210 to increase the magnetic field focusing speed of the wireless power transmission antenna units 110 and 210. It can improve performance.
  • the shielding unit 120 is the wireless power transmission for operating in the corresponding frequency band during wireless charging by the magnetic induction method in the frequency band of 100 ⁇ 350kHz, or wireless charging by the magnetic resonance method at the frequency of 6.78MHz To increase the performance of the antenna unit (110, 210).
  • the shielding unit 120 may be made of a material having magnetic properties to shield the magnetic field.
  • the shielding unit 120 may have a permeability range of 300 to 3500 when the wireless power transmission antenna units 110 and 210 operate in a low frequency band of 100 to 350 kHz, and the wireless power transmission antenna When the units 110 and 210 operate at a frequency of 6.78 MHz, they may have permeability in the range of 100 to 350.
  • the shielding unit 120 is a ribbon sheet, a polymer sheet, and the like, including at least one of Mn-Zn ferrite sheet, amorphous alloy, and nano-crystalline alloy having a permeability in the range of 2000 to 3500 at a low frequency band of 100 to 350 kHz. This can be used.
  • the shielding unit 120 is a ribbon sheet including at least one or more of Ni-Zn ferrite sheet, amorphous alloy and nano-crystalline alloy having a permeability in the range of 300 ⁇ 1500 in the low frequency band 100 ⁇ 350kHz, etc. This can be used.
  • the shielding unit 120 may be a ribbon sheet, a polymer sheet, or the like including at least one or more of Ni-Zn ferrite sheet, amorphous alloy, and nanocrystalline alloy having a permeability in the range of 100 to 350 at 6.78 MHz. .
  • the amorphous alloy or nanocrystalline alloy may be used a Fe-based or Co-based magnetic alloy
  • the amorphous alloy and the nanocrystalline alloy may include a three-element alloy or a five-element alloy.
  • the three-element alloy may include Fe, Si, and B
  • the five-element alloy may include Fe, Si, B, Cu, and Nb.
  • the shielding unit 120 ′ may have a form in which a plurality of sheets 121a are stacked in a multi-layer via an adhesive layer 121b as illustrated in FIG. 9, and the plurality of sheets may include amorphous alloys and nano-crystal grains. It may be a ribbon sheet containing at least one or more of the alloys.
  • the shielding unit (120, 120 ') may be formed into a plurality of fine pieces to suppress the generation of eddy current, the plurality of fine pieces may be provided to be insulated entirely or partially insulated between the neighboring fine pieces. Each piece may be randomly made atypical.
  • the adhesive layer 121b may include a non-conductive component.
  • the adhesive layer 121b may penetrate between a pair of sheets stacked on each other to insulate each of the plurality of fine pieces constituting each sheet from each other.
  • the adhesive layer 121b may be provided as an adhesive or may be provided in a form in which an adhesive is applied to one side or both sides of a film-form substrate.
  • the shielding unit 120, 120 ′ may have a protective film 123 disposed on at least one surface of an upper surface and a lower surface.
  • the magnetic permeability and the kind of magnetic material of the shielding unit 120 described above are not limited to the above-mentioned magnetic permeability and magnetic material, and it is understood that a magnetic material having an appropriate magnetic permeability may be used according to design conditions.
  • the antenna unit 110 for wireless power transmission according to the present invention is formed of a flat coil of odd layers, for example, a flat coil of three layers, the receiving unit 120 may be formed.
  • the accommodating portion may be an accommodating groove 122 formed in a predetermined depth from one surface of the shielding unit 120 (see FIG. 1), or a predetermined length inwardly formed from one side edge of the shielding unit 120. It may be an incision (not shown).
  • the accommodating portion may be arranged such that the fourth lead portion 112b of the second coil unit 112 extends from the center portion of the flat coil and crosses the body of the flat coil. Can be inserted.
  • the antenna unit 110 for wireless power transmission is attached to one surface of the shielding unit 120, one surface of the antenna units 110 and 210 may be adhered to the adhesive layers 113 and 124 by accommodating the thickness of the fourth lead portion 112b.
  • the thickness of the fourth lead part 112b may be prevented from increasing, thereby further reducing the overall thickness of the wireless power transmission module 100 or 200.
  • the wireless power transmission antenna units 110 and 210 and the wireless power transmission modules 100 and 200 including the same may be applied to wireless charging using a Qi method or a PMA type magnetic induction method, or A4WP. It can also be applied to wireless charging using the same magnetic resonance method.
  • the wireless power transmission antenna units 110 and 210 may be used as a receiving coil (Rx coil) for receiving wireless power. That is, when the above-described wireless power transmitting antenna units 110 and 210 are used as Rx coils for receiving wireless power by using an inductive coupling method or a magnetic resonance method based on electromagnetic induction, one side of the receiving coil may be used. It may be implemented as a wireless power receiving module including a shielding sheet disposed, it is to be noted that the shielding sheet included in the wireless power receiving module can also be used in the above-described shielding sheet.

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

Abstract

L'invention concerne une unité d'antenne d'envoi d'énergie sans fil et un module d'envoi d'énergie sans fil la comprenant. L'unité d'antenne d'envoi d'énergie sans fil, selon un exemple de mode de réalisation de la présente invention, qui comprend au moins trois couches de bobine plate formées par enroulement d'un élément conducteur ayant une longueur prédéfinie, comprend : une première unité de bobine comprenant deux couches de bobine plate formées par enroulement d'un seul élément conducteur plusieurs fois, l'élément conducteur comprenant une paire de première et deuxième parties broche sur ses extrémités opposées ; et une seconde unité de bobine comprenant une ou plusieurs couche(s) de bobine plate formée(s) par enroulement d'un seul élément conducteur plusieurs fois, l'élément conducteur comprenant une paire de troisième et quatrième parties broche sur ses extrémités opposées, la première unité de bobine étant empilée sur la seconde unité de bobine de manière qu'une surface de la première unité de bobine soit en contact de surface à surface avec une surface de la seconde unité de bobine, et la deuxième partie broche étant directement connectée à la troisième partie broche.
PCT/KR2016/005646 2015-05-28 2016-05-27 Unité d'antenne d'envoi d'énergie sans fil et module d'envoi d'énergie sans fil la comprenant WO2016190708A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20150075139 2015-05-28
KR10-2015-0075139 2015-05-28

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WO2016190708A1 true WO2016190708A1 (fr) 2016-12-01

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CN109148111A (zh) * 2018-08-27 2019-01-04 昆山联滔电子有限公司 一种线圈装置及电子设备
CN110350321A (zh) * 2018-04-02 2019-10-18 法雷奥舒适驾驶助手公司 用于无线电力传输的天线及其制造方法
CN110999027A (zh) * 2017-08-02 2020-04-10 宁波吉利汽车研究开发有限公司 一种用于车辆的无线电力传输系统的装置
EP3709319A4 (fr) * 2018-03-13 2021-09-01 Amosense Co.,Ltd Feuille de blindage de champ magnétique complexe de type à grande surface et module de transmission d'énergie sans fil comprenant ladite feuille de blindage
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KR102175380B1 (ko) * 2020-10-23 2020-11-06 주식회사 아모센스 대면적형 복합 자기장 차폐시트 및 이를 포함하는 무선전력 전송모듈

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CN110999027A (zh) * 2017-08-02 2020-04-10 宁波吉利汽车研究开发有限公司 一种用于车辆的无线电力传输系统的装置
CN110999027B (zh) * 2017-08-02 2023-10-20 宁波吉利汽车研究开发有限公司 一种用于车辆的无线电力传输系统的装置
US20220148793A1 (en) * 2018-01-12 2022-05-12 Cyntec Co., Ltd. Electronic Device and the Method to Make the Same
EP3709319A4 (fr) * 2018-03-13 2021-09-01 Amosense Co.,Ltd Feuille de blindage de champ magnétique complexe de type à grande surface et module de transmission d'énergie sans fil comprenant ladite feuille de blindage
CN110350321A (zh) * 2018-04-02 2019-10-18 法雷奥舒适驾驶助手公司 用于无线电力传输的天线及其制造方法
CN110350321B (zh) * 2018-04-02 2024-04-12 法雷奥舒适驾驶助手公司 用于无线电力传输的天线及其制造方法
CN109148111A (zh) * 2018-08-27 2019-01-04 昆山联滔电子有限公司 一种线圈装置及电子设备

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