WO2014054893A1 - Electromagnetic booster for wireless charging and method of manufacturing the same - Google Patents
Electromagnetic booster for wireless charging and method of manufacturing the same Download PDFInfo
- Publication number
- WO2014054893A1 WO2014054893A1 PCT/KR2013/008847 KR2013008847W WO2014054893A1 WO 2014054893 A1 WO2014054893 A1 WO 2014054893A1 KR 2013008847 W KR2013008847 W KR 2013008847W WO 2014054893 A1 WO2014054893 A1 WO 2014054893A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetic sheet
- sheet member
- electromagnetic booster
- coil part
- magnetic
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 230000035699 permeability Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 26
- 239000000696 magnetic material Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- 239000011347 resin Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 9
- 239000012790 adhesive layer Substances 0.000 claims description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 229910000859 α-Fe Inorganic materials 0.000 claims description 5
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 229910052796 boron Inorganic materials 0.000 claims description 3
- 229910052793 cadmium Inorganic materials 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 238000001312 dry etching Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 230000000873 masking effect Effects 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 229920006122 polyamide resin Polymers 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 239000009719 polyimide resin Substances 0.000 claims description 3
- -1 polysiloxane Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 description 16
- 239000002184 metal Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000010408 film Substances 0.000 description 9
- 239000010410 layer Substances 0.000 description 8
- 238000010030 laminating Methods 0.000 description 5
- 239000010409 thin film Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 229910000702 sendust Inorganic materials 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
Images
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
- H02J50/005—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
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/041—Printed circuit coils
- H01F41/046—Printed circuit coils structurally combined with ferromagnetic material
-
- 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
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
-
- 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
- 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
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
-
- 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
-
- H02J7/025—
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F2003/106—Magnetic circuits using combinations of different magnetic materials
-
- 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
- H01F2038/143—Inductive couplings for signals
-
- 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
Definitions
- Embodiments of the present invention relate to an electromagnetic booster for wireless charging, and more specifically, to an electromagnetic booster for wireless charging, which has a magnetic part composed of a magnetic sheet and a metallic radiator layer, and a method of manufacturing the same.
- a mobile terminal such as a cellular phone is driven by a battery, which can be recharged by its characteristic, and electrical energy is supplied to the battery of the mobile terminal using a separate charging device.
- a wireless charging technology or non-contact charging technology has been developed, it has been utilized for various electromagnetic instruments. This wireless charging technology uses wireless power transmission and reception and is a system which enables the battery to be charged without connecting a separate charging connector to the terminal.
- a conventional booster for wireless charging is configured in a structure in which a magnetic layer 1 composed of a ferrite sintered material, a ferrite composite, a sendust sintered material, a sendust composite or the like, an adhesive layer A formed on the magnetic layer, and a metal coil 2 serving as a radiator and formed on the adhesive layer are laminated.
- a metal coil 2 since the metal coil 2 is formed on the magnetic layer 1, malfunction which causes frequency interference, offsetting, extinction due to different operating frequencies can be generated.
- an adhesive layer A or an adhesive layer and an air layer located between the magnetic layer 1 and the metal coil 2 a permeability rate can be reduced, a loss rate can be increased, and charging efficiency can be reduced.
- the laminated structure acts as a drag on a slimming design of the wireless charging device.
- An aspect of the embodiments of the present invention provides an electromagnetic booster for wireless charging, which can prevent malfunction due to frequency interference.
- Another aspect of the embodiments of the present invention provides an electromagnetic booster for wireless charging that is capable of improving a bandwidth and a permeability rate and reducing a loss rate, and enables a wireless charging device to be slim in design.
- Still another aspect of the embodiments of the present invention provides a method of manufacturing the electromagnetic booster for wireless charging.
- an electromagnetic booster for wireless charging comprising a magnetic material part having a magnetic sheet and a coil part disposed on the magnetic sheet, wherein the magnetic material sheet is composed of a first magnetic sheet member located at an edge portion and a second magnetic sheet member located in a center portion on the same plane, wherein the first magnetic sheet member and the second magnetic sheet member have different permeability rates from each other.
- the electromagnetic booster for wireless charging is characterized in that the first magnetic sheet member and the second magnetic sheet member may come into contact with each other or may be spaced apart from each other with an air gap formed therebetween.
- the electromagnetic booster for wireless charging is characterized in that the coil part may be composed of a first coil member and a second coil member disposed on each of surfaces of the first magnetic sheet member and of the second magnetic sheet member, and the first coil member and the second coil member may have a thin film coil-like shape.
- the electromagnetic booster for wireless charging is characterized in that a concave part corresponding to a shape of the coil part may be formed on a surface of the magnetic sheet, and the coil part may be partially or entirely filled with the concave part in a depth direction of the concave part.
- the electromagnetic booster for wireless charging is characterized in that the coil part may be composed of a first coil member and a second coil member disposed on the first magnetic sheet member and the second magnetic sheet member by interposing an adhesive therebetween, and the first coil member and the second coil member may have a thin film coil-like shape.
- the electromagnetic booster for wireless charging is characterized in that the first magnetic sheet member and the second magnetic sheet member may have the same or different heights (thicknesses).
- the electromagnetic booster for wireless charging is characterized in that the magnetic sheet may be made of a magnetic composition containing a magnetic material and a binder.
- the electromagnetic booster for wireless charging is characterized in that the magnetic material may be one element or an alloy composed of a combination of two or more elements selected from the group consisting of Fe, Ni, Co, Mn, Al, Zn, Cu, Ba, Ti, Sn, Sr, P, B, N, C, W, Cr, Bi, Li, Y and Cd, or ferrite.
- the electromagnetic booster for wireless charging is characterized in that the magnetic material may be a power having a particle size of 3 nm ⁇ 50 ⁇ m.
- the electromagnetic booster for wireless charging is characterized in that the binder may be one resin or a mixture of two or more resins selected from the group consisting of a polyvinyl alcohol (PVA) resin, a polysiloxane resin, an epoxy resin, an acrylate resin, an urethane resin, a polyimide resin and a polyamide resin.
- PVA polyvinyl alcohol
- the electromagnetic booster for wireless charging is characterized in that the magnetic composition may contain the magnetic material of 10 ⁇ 95wt% and the binder of 5 ⁇ 90wt%.
- the electromagnetic booster for wireless charging is characterized in that the magnetic composition may further contain any one or two or more additives selected from the group consisting of a silane coupling agent, an antifoaming agent and a cross linking agent.
- the electromagnetic booster for wireless charging is characterized in that the magnetic composition may contain the additives in the range of less than 2wt%.
- the electromagnetic booster for wireless charging is characterized in that the coil part may be made of Ag, Au, Cu or A.
- the electromagnetic booster for wireless charging is characterized in that the coil part may have a thickness (height) of 5 ⁇ m ⁇ 1mm.
- the electromagnetic booster for wireless charging is characterized in that the coil part may have a pitch of 5 ⁇ 500 ⁇ m.
- the electromagnetic booster for wireless charging is characterized in that the coil part may further include a base film BF laminated thereon.
- the electromagnetic booster for wireless charging may further include a base film BF laminated on a rear surface of the magnetic sheet.
- the electromagnetic booster for wireless charging may include a magnetic sheet and a coil part disposed on the magnetic sheet.
- an electromagnetic booster for wireless charging including a magnetic sheet and a coil part disposed on the magnetic sheet, the method including: forming the magnetic sheet with a first magnetic sheet member located at an edge portion and a second magnetic sheet member located in a center portion and having a different permeability rate from that of the first magnetic sheet member on the same plane; and laminating a coil part on the magnetic sheet.
- the method is characterized in that the coil part may be formed by plating and etching processes of a metal, and a silk-screening printing process, a pattern coating process or a sputtering process.
- the method is characterized in that the laminating of the coil part may include forming a concave part having a shape corresponding to the coil part by engraving a surface of the magnetic sheet; and forming the coil part by putting a metal thin film coil into the concave part.
- the method is characterized in that the engraving may be performed using a laser exposure process, a dry etching process after masking, or a stepped pulley formation process with a difference in press between a corresponding area and a non-corresponding area of the engraving.
- Advantageous effects of the electromagnetic booster for wireless charging according to the embodiments of the present invention are that: a wireless charging effect can be maximized; malfunction due to frequency interference can be prevented; it is appropriate for designs having various functions; a bandwidth and a permeability rate can be improved; a loss rate can be reduced; productivity can be improved thanks to a reduction in material and process costs; and a wireless charge device can be designed to be slimmer than before.
- FIG. 1 is a plan view of an electromagnetic booster having a magnetic sheet according to a first embodiment of the present invention
- FIG. 2 is a cross-sectional view of FIG. 1;
- FIG. 3 is a cross-sectional view of an electromagnetic booster having a magnetic sheet according to a second embodiment of the present invention.
- FIG. 4 is a cross-sectional view of FIG. 3;
- FIG. 5 is a cross-sectional view of an electromagnetic booster having a laminated structure according to a third embodiment of the present invention.
- FIG. 6 is a cross-sectional view of an electromagnetic booster having a laminated structure according to a fourth embodiment of the present invention.
- FIG. 7 is a cross-sectional view of an electromagnetic booster having a laminated structure according to a fifth embodiment of the present invention.
- FIG. 8 is a cross-sectional view of an electromagnetic booster having a laminated structure according to a sixth embodiment of the present invention.
- FIG. 9 is a cross-sectional view of an electromagnetic booster having a laminated structure according to a seventh embodiment of the present invention.
- FIG. 10 is a cross-sectional view of an electromagnetic booster having a laminated structure according to an eighth embodiment of the present invention.
- FIG. 11 is a plan view and a cross-sectional view of a conventional electromagnetic booster.
- an electromagnetic booster for wireless charging includes: a magnetic part having a magnetic sheet 10; and a coil part 20 disposed on the magnetic sheet 10.
- the magnetic sheet 10 is composed of a first magnetic sheet member 11 located at an edge portion and a second magnetic sheet member 12 located in a center portion on the same plane, and the first magnetic sheet member and the second magnetic sheet member have different permeability rates from each other.
- the magnetic sheet 10 is complexly composed of magnetic materials having different permeability rates from each other so that frequency interference, offsetting, extinction generated due to different operating frequencies can be prevented, thereby preventing malfunction from being generated. Furthermore, the magnetic sheet 10 can be efficiently used in wireless charge products for which various functions are required.
- the value of NFC operation frequency is about 13.56 MHz
- the value of wireless charging operation frequency is about 200 ⁇ 300 KHz or 6.78 MHz when it is a magnetic induction type and is about 100 ⁇ 200 KHz when it is a magnetic resonance type.
- the first magnetic sheet member and the second magnetic sheet member may be disposed and configured to be come into contact with each other as shown in FIG. 1 and FIG. 2 illustrating a first embodiment of the present invention, or may be disposed and configured to be spaced apart from each other with an air gap 13 formed therebetween.
- the coil part 20 may have a thin film coil-like shape and may be composed of a first coil member 21 and a second coil member 22 disposed on each of surfaces of the first magnetic sheet member 11 and of the second magnetic sheet member 12 as shown in first and second embodiments.
- non-explained reference numeral 23 refers to a conducting wire.
- a concave part corresponding to a shape of the coil part 20 is formed on the surface of the magnetic sheet 10, and particularly, it is preferable that the coil part 20 is partially or entirely filled with the concave part in a depth direction of the concave part.
- a thickness of the metal radiator layer 20 closely related to performance upon wireless charging can be maximized.
- the metal radiator layer 20 can be formed to be thick as the magnetic sheet 10, a wireless charging effect can be maximized.
- material and process costs of the coil part as well as those of the magnetic sheet can be reduced, and the slimmer design of the electromagnetic booster can be achieved.
- a thickness of the radiator coil is about 0.35 ⁇ 1.0 mm, whereas in the electromagnetic booster according to the embodiments of the present invention, a thickness of the coil part 20 may be produced in various ranges of ⁇ m unit.
- the coil part 20 may be disposed on the magnetic sheet 10 by interposing an adhesive therebetween as shown in the embodiments of FIG. 5 to 10.
- the first magnetic sheet member 11 and the second magnetic sheet member 12 may have the same or different heights (thicknesses).
- the height of the first magnetic sheet member 11 may be formed higher than that of the second magnetic sheet member 12.
- the height of the first magnetic sheet member 11 may be formed lower than that of the second magnetic sheet member 12.
- the magnetic sheet is made of a magnetic composition containing a magnetic material and a binder.
- the magnetic material may be one element or an alloy of a combination of two or more elements selected from the group consisting of Fe, Ni, Co, Mn, Al, Zn, Cu, Ba, Ti, Sn, Sr, P, B, N, C, W, Cr, Bi, Li, Y, Cd and the like, or ferrite, and may be in a powder state in a particle size of 3 nm ⁇ 50 ⁇ m.
- the binder is one resin or a mixture of two or more resins selected from the group consisting of a polyvinyl alcohol (PVA) resin, a polysiloxane resin, an epoxy resin, an acrylate resin, a urethane resin, a polyimide resin and a polyamide resin.
- PVA polyvinyl alcohol
- the magnetic material of 10 ⁇ 95wt% and the binder of 5 ⁇ 90wt% may be mixed.
- the magnetic composition may contain other general additives well known in the relevant field in the amount of less than 2wt%.
- the additives are a silane coupling agent, an antifoaming agent, a cross-linking agent and the like.
- the coil part 20 may be made of a metal such as Ag, Au, Cu, Al and the like, a thickness of the coil part 20 may range from 5 ⁇ m to 1 mm, a pitch thereof may range from 5 to 500 ⁇ m.
- the pitch means a distance between spiral coils which form the coil part 20, namely, a spaced distance among adjacent spiral coils.
- the electromagnetic booster according the embodiments of the present invention may be commercialized by laminating a base film 30 on an assembly of the magnetic sheet 10 and the coil part 20.
- the base film may be laminated on the coil part 20 or may be laminated on a rear surface (a surface on which the coil part 20 is not formed) of the magnetic sheet 10.
- the base film 30 is composed a film body 32 and an adhesive layer 31 formed thereon, the base film 30 may be composed of only the film body without the adhesive layer by using an adhesive property which the film itself has.
- the electromagnetic booster according to the embodiments of the present invention may be manufactured by forming the magnetic sheet with the first magnetic sheet member located at the edge portion and the second magnetic sheet member located in an center portion and having the different permeability rate from that of the first magnetic sheet member on the same plane, and thereafter, laminating the coil part on the magnetic sheet.
- the coil part may be formed using a plating process and an etching process of a metal, a silkscreen printing process, a pattern coating process or a sputtering process.
- the laminating of the coil part may include forming a concave part having a shape corresponding to the coil part by engraving a surface of the magnetic sheet, and thereafter, forming the coil part by putting a metal thin film coil into the concave part.
- the engraving of the magnetic sheet may be performed using a laser exposure process, a dry etching process after masking, a stepped pulley formation process with a difference in press between a corresponding area and an irrelevant are of the engraving, and the like.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Provided is an electromagnetic booster for wireless charging, comprising a magnet part having a magnetic sheet (10) and a coil part (20) disposed on the magnetic sheet, wherein the magnetic sheet is composed of a first magnetic sheet (11) member located at an edge portion and a second magnetic sheet member (12) located in a center portion on the same plane, wherein the first magnetic sheet member and the second magnetic sheet member have different permeability rates from each other.
Description
Embodiments of the present invention relate to an electromagnetic booster for wireless charging, and more specifically, to an electromagnetic booster for wireless charging, which has a magnetic part composed of a magnetic sheet and a metallic radiator layer, and a method of manufacturing the same.
A mobile terminal such as a cellular phone is driven by a battery, which can be recharged by its characteristic, and electrical energy is supplied to the battery of the mobile terminal using a separate charging device. Recently, as a wireless charging technology or non-contact charging technology has been developed, it has been utilized for various electromagnetic instruments. This wireless charging technology uses wireless power transmission and reception and is a system which enables the battery to be charged without connecting a separate charging connector to the terminal.
As illustrated in FIG. 11, a conventional booster for wireless charging is configured in a structure in which a magnetic layer 1 composed of a ferrite sintered material, a ferrite composite, a sendust sintered material, a sendust composite or the like, an adhesive layer A formed on the magnetic layer, and a metal coil 2 serving as a radiator and formed on the adhesive layer are laminated. In this conventional booster, since the metal coil 2 is formed on the magnetic layer 1, malfunction which causes frequency interference, offsetting, extinction due to different operating frequencies can be generated. Furthermore, with regard to an adhesive layer A or an adhesive layer and an air layer located between the magnetic layer 1 and the metal coil 2, a permeability rate can be reduced, a loss rate can be increased, and charging efficiency can be reduced. Also, the laminated structure acts as a drag on a slimming design of the wireless charging device.
An aspect of the embodiments of the present invention provides an electromagnetic booster for wireless charging, which can prevent malfunction due to frequency interference.
Another aspect of the embodiments of the present invention provides an electromagnetic booster for wireless charging that is capable of improving a bandwidth and a permeability rate and reducing a loss rate, and enables a wireless charging device to be slim in design.
Still another aspect of the embodiments of the present invention provides a method of manufacturing the electromagnetic booster for wireless charging.
According to an aspect of the embodiments of the present invention, there is provided an electromagnetic booster for wireless charging, comprising a magnetic material part having a magnetic sheet and a coil part disposed on the magnetic sheet, wherein the magnetic material sheet is composed of a first magnetic sheet member located at an edge portion and a second magnetic sheet member located in a center portion on the same plane, wherein the first magnetic sheet member and the second magnetic sheet member have different permeability rates from each other.
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging is characterized in that the first magnetic sheet member and the second magnetic sheet member may come into contact with each other or may be spaced apart from each other with an air gap formed therebetween.
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging is characterized in that the coil part may be composed of a first coil member and a second coil member disposed on each of surfaces of the first magnetic sheet member and of the second magnetic sheet member, and the first coil member and the second coil member may have a thin film coil-like shape.
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging is characterized in that a concave part corresponding to a shape of the coil part may be formed on a surface of the magnetic sheet, and the coil part may be partially or entirely filled with the concave part in a depth direction of the concave part.
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging is characterized in that the coil part may be composed of a first coil member and a second coil member disposed on the first magnetic sheet member and the second magnetic sheet member by interposing an adhesive therebetween, and the first coil member and the second coil member may have a thin film coil-like shape.
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging is characterized in that the first magnetic sheet member and the second magnetic sheet member may have the same or different heights (thicknesses).
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging is characterized in that the magnetic sheet may be made of a magnetic composition containing a magnetic material and a binder.
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging is characterized in that the magnetic material may be one element or an alloy composed of a combination of two or more elements selected from the group consisting of Fe, Ni, Co, Mn, Al, Zn, Cu, Ba, Ti, Sn, Sr, P, B, N, C, W, Cr, Bi, Li, Y and Cd, or ferrite.
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging is characterized in that the magnetic material may be a power having a particle size of 3 nm ~ 50 ㎛.
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging is characterized in that the binder may be one resin or a mixture of two or more resins selected from the group consisting of a polyvinyl alcohol (PVA) resin, a polysiloxane resin, an epoxy resin, an acrylate resin, an urethane resin, a polyimide resin and a polyamide resin.
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging is characterized in that the magnetic composition may contain the magnetic material of 10 ~ 95wt% and the binder of 5 ~ 90wt%.
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging is characterized in that the magnetic composition may further contain any one or two or more additives selected from the group consisting of a silane coupling agent, an antifoaming agent and a cross linking agent.
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging is characterized in that the magnetic composition may contain the additives in the range of less than 2wt%.
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging is characterized in that the coil part may be made of Ag, Au, Cu or A.
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging is characterized in that the coil part may have a thickness (height) of 5 ㎛ ~ 1mm.
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging is characterized in that the coil part may have a pitch of 5 ~ 500 ㎛.
*Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging is characterized in that the coil part may further include a base film BF laminated thereon.
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging may further include a base film BF laminated on a rear surface of the magnetic sheet.
Preferably, according to some embodiments of the present invention, the electromagnetic booster for wireless charging may include a magnetic sheet and a coil part disposed on the magnetic sheet.
According to another aspect of the embodiments of the present invention, there is provided a method of manufacturing an electromagnetic booster for wireless charging including a magnetic sheet and a coil part disposed on the magnetic sheet, the method including: forming the magnetic sheet with a first magnetic sheet member located at an edge portion and a second magnetic sheet member located in a center portion and having a different permeability rate from that of the first magnetic sheet member on the same plane; and laminating a coil part on the magnetic sheet.
Preferably, according to some embodiments of the present invention, the method is characterized in that the coil part may be formed by plating and etching processes of a metal, and a silk-screening printing process, a pattern coating process or a sputtering process.
Preferably, according to some embodiments of the present invention, the method is characterized in that the laminating of the coil part may include forming a concave part having a shape corresponding to the coil part by engraving a surface of the magnetic sheet; and forming the coil part by putting a metal thin film coil into the concave part.
Preferably, according to some embodiments of the present invention, the method is characterized in that the engraving may be performed using a laser exposure process, a dry etching process after masking, or a stepped pulley formation process with a difference in press between a corresponding area and a non-corresponding area of the engraving.
Advantageous effects of the electromagnetic booster for wireless charging according to the embodiments of the present invention are that: a wireless charging effect can be maximized; malfunction due to frequency interference can be prevented; it is appropriate for designs having various functions; a bandwidth and a permeability rate can be improved; a loss rate can be reduced; productivity can be improved thanks to a reduction in material and process costs; and a wireless charge device can be designed to be slimmer than before.
The accompanying drawings are included to provide a further understanding of the present invention, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present invention and, together with the description, serve to explain principles of the present invention. In the drawings:
FIG. 1 is a plan view of an electromagnetic booster having a magnetic sheet according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a cross-sectional view of an electromagnetic booster having a magnetic sheet according to a second embodiment of the present invention;
FIG. 4 is a cross-sectional view of FIG. 3;
FIG. 5 is a cross-sectional view of an electromagnetic booster having a laminated structure according to a third embodiment of the present invention;
FIG. 6 is a cross-sectional view of an electromagnetic booster having a laminated structure according to a fourth embodiment of the present invention;
FIG. 7 is a cross-sectional view of an electromagnetic booster having a laminated structure according to a fifth embodiment of the present invention;
FIG. 8 is a cross-sectional view of an electromagnetic booster having a laminated structure according to a sixth embodiment of the present invention;
FIG. 9 is a cross-sectional view of an electromagnetic booster having a laminated structure according to a seventh embodiment of the present invention;
FIG. 10 is a cross-sectional view of an electromagnetic booster having a laminated structure according to an eighth embodiment of the present invention; and
FIG. 11 is a plan view and a cross-sectional view of a conventional electromagnetic booster.
Embodiments according to the present invention will now be described more fully hereinafter with reference to the accompanying drawings. The exemplary embodiments of the present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Furthermore, when it is determined that specific descriptions regarding publicly known relevant functions or configurations may unnecessarily be beside main points of the present invention, the corresponding descriptions are omitted. It will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification. With regard to the elements which perform similar functions and operations, like numbers refer to like elements through the specification.
According to an embodiment of the present invention, an electromagnetic booster for wireless charging includes: a magnetic part having a magnetic sheet 10; and a coil part 20 disposed on the magnetic sheet 10.
In the present embodiment of the invention, the magnetic sheet 10 is composed of a first magnetic sheet member 11 located at an edge portion and a second magnetic sheet member 12 located in a center portion on the same plane, and the first magnetic sheet member and the second magnetic sheet member have different permeability rates from each other.
According to the present embodiment of the invention, the magnetic sheet 10 is complexly composed of magnetic materials having different permeability rates from each other so that frequency interference, offsetting, extinction generated due to different operating frequencies can be prevented, thereby preventing malfunction from being generated. Furthermore, the magnetic sheet 10 can be efficiently used in wireless charge products for which various functions are required.
For example, the value of NFC operation frequency is about 13.56 MHz, and the value of wireless charging operation frequency is about 200 ~ 300 KHz or 6.78 MHz when it is a magnetic induction type and is about 100 ~ 200 KHz when it is a magnetic resonance type.
In the present embodiment of the invention, the first magnetic sheet member and the second magnetic sheet member may be disposed and configured to be come into contact with each other as shown in FIG. 1 and FIG. 2 illustrating a first embodiment of the present invention, or may be disposed and configured to be spaced apart from each other with an air gap 13 formed therebetween.
Also, the coil part 20 may have a thin film coil-like shape and may be composed of a first coil member 21 and a second coil member 22 disposed on each of surfaces of the first magnetic sheet member 11 and of the second magnetic sheet member 12 as shown in first and second embodiments. In plan views of FIG. 1 and FIG. 3, non-explained reference numeral 23 refers to a conducting wire.
When the coil part 20 is formed on a surface of the magnetic sheet 10, a concave part corresponding to a shape of the coil part 20 is formed on the surface of the magnetic sheet 10, and particularly, it is preferable that the coil part 20 is partially or entirely filled with the concave part in a depth direction of the concave part. In a case where the in-mold type process is used, while a slimmer design can be realized, a thickness of the metal radiator layer 20 closely related to performance upon wireless charging can be maximized. Also, since the metal radiator layer 20 can be formed to be thick as the magnetic sheet 10, a wireless charging effect can be maximized. Also, material and process costs of the coil part as well as those of the magnetic sheet can be reduced, and the slimmer design of the electromagnetic booster can be achieved. In the conventional electromagnetic booster, a thickness of the radiator coil is about 0.35 ~ 1.0 mm, whereas in the electromagnetic booster according to the embodiments of the present invention, a thickness of the coil part 20 may be produced in various ranges of ㎛ unit.
Also, in the electromagnetic booster according to some embodiments of the present invention, the coil part 20 may be disposed on the magnetic sheet 10 by interposing an adhesive therebetween as shown in the embodiments of FIG. 5 to 10.
Also, in the electromagnetic booster according to some embodiments of the present invention, the first magnetic sheet member 11 and the second magnetic sheet member 12 may have the same or different heights (thicknesses). For example, as shown in the fourth and seventh embodiments, the height of the first magnetic sheet member 11 may be formed higher than that of the second magnetic sheet member 12. Alternately, as shown in the fifth and eighth embodiments, the height of the first magnetic sheet member 11 may be formed lower than that of the second magnetic sheet member 12.
In the embodiments of the present invention, the magnetic sheet is made of a magnetic composition containing a magnetic material and a binder.
In the magnetic composition according to the embodiments of the present invention, the magnetic material may be one element or an alloy of a combination of two or more elements selected from the group consisting of Fe, Ni, Co, Mn, Al, Zn, Cu, Ba, Ti, Sn, Sr, P, B, N, C, W, Cr, Bi, Li, Y, Cd and the like, or ferrite, and may be in a powder state in a particle size of 3 nm ~ 50 ㎛.
Also, in the magnetic composition, the binder is one resin or a mixture of two or more resins selected from the group consisting of a polyvinyl alcohol (PVA) resin, a polysiloxane resin, an epoxy resin, an acrylate resin, a urethane resin, a polyimide resin and a polyamide resin.
In the magnetic composition, with regard to a mixture ratio of the magnetic material and the binder, the magnetic material of 10 ~ 95wt% and the binder of 5 ~ 90wt% may be mixed.
Furthermore, the magnetic composition may contain other general additives well known in the relevant field in the amount of less than 2wt%. Examples of the additives are a silane coupling agent, an antifoaming agent, a cross-linking agent and the like.
In the electromagnetic booster according to the embodiments of the present invention, the coil part 20 may be made of a metal such as Ag, Au, Cu, Al and the like, a thickness of the coil part 20 may range from 5 ㎛ to 1 mm, a pitch thereof may range from 5 to 500 ㎛. Here, the pitch means a distance between spiral coils which form the coil part 20, namely, a spaced distance among adjacent spiral coils.
The electromagnetic booster according the embodiments of the present invention may be commercialized by laminating a base film 30 on an assembly of the magnetic sheet 10 and the coil part 20. The base film may be laminated on the coil part 20 or may be laminated on a rear surface (a surface on which the coil part 20 is not formed) of the magnetic sheet 10. In an example illustrated, although the base film 30 is composed a film body 32 and an adhesive layer 31 formed thereon, the base film 30 may be composed of only the film body without the adhesive layer by using an adhesive property which the film itself has.
Hereinafter, a method of manufacturing the electromagnetic booster according to the embodiments of the present invention will be explained.
The electromagnetic booster according to the embodiments of the present invention may be manufactured by forming the magnetic sheet with the first magnetic sheet member located at the edge portion and the second magnetic sheet member located in an center portion and having the different permeability rate from that of the first magnetic sheet member on the same plane, and thereafter, laminating the coil part on the magnetic sheet.
Here, the coil part may be formed using a plating process and an etching process of a metal, a silkscreen printing process, a pattern coating process or a sputtering process.
Also, the laminating of the coil part may include forming a concave part having a shape corresponding to the coil part by engraving a surface of the magnetic sheet, and thereafter, forming the coil part by putting a metal thin film coil into the concave part.
The engraving of the magnetic sheet may be performed using a laser exposure process, a dry etching process after masking, a stepped pulley formation process with a difference in press between a corresponding area and an irrelevant are of the engraving, and the like.
As previously described, in the detailed description of the invention, having described the detailed exemplary embodiments of the invention, it should be apparent that modifications and variations can be made by persons skilled without deviating from the spirit or scope of the invention. Therefore, it is to be understood that the foregoing is illustrative of the present invention and is not to be construed as limited to the specific embodiments disclosed, and that modifications to the disclosed embodiments, as well as other embodiments, are intended to be included within the scope of the appended claims and their equivalents.
Claims (17)
- An electromagnetic booster for wireless charging, comprising:a magnetic sheet; anda coil part disposed on the magnetic sheet,wherein the magnetic sheet is composed of a first magnetic sheet member located at an edge portion and a second magnetic sheet member located to be adjacent to the first magnetic sheet on the same plane,wherein the first magnetic sheet member and the second magnetic sheet member have different permeability rates from each other.
- The electromagnetic booster of claim 1, wherein the first magnetic sheet member and the second magnetic sheet member come into contact with each other.
- The electromagnetic booster of claim 1, wherein the first magnetic sheet member and the second magnetic sheet member are spaced apart from each other with an air gap formed therebetween.
- The electromagnetic booster of claim 1, wherein the coil part is disposed on each of surfaces of the first magnetic sheet member and of the second magnetic sheet member.
- The electromagnetic booster of claim 4, wherein a concave part corresponding to a shape of the coil part is formed on a surface of the magnetic sheet, and the coil part is partially or entirely filled with the concave portion in a depth direction of the concave part.
- The electromagnetic booster of claim 1, further comprising an adhesive layer interposed between the coil part and the magnetic sheet.
- The electromagnetic booster of any one of claims 1 to 6, wherein the first magnetic sheet member and the second magnetic sheet member have the same or different heights or thicknesses.
- The electromagnetic booster of claim 1, wherein the magnetic sheet is made of a magnetic composition containing a magnetic material and a binder.
- The electromagnetic booster of claim 8, wherein the magnetic material is one element or an alloy of a combination of two or more elements selected from the group consisting of Fe, Ni, Co, Mn, Al, Zn, Cu, Ba, Ti, Sn, Sr, P, B, N, C, W, Cr, Bi, Li, Y and Cd, or ferrite.
- The electromagnetic booster of claim 8, wherein the magnetic material is a powder having a particle size of 3 nm ~ 50 ㎛.
- The electromagnetic booster of claim 8, wherein the binder is one resin or a mixture of two or more resins selected from the group consisting of a polyvinyl alcohol (PVA) resin, a polysiloxane resin, an epoxy resin, an acrylate resin, an urethane resin, a polyimide resin and a polyamide resin.
- The electromagnetic booster of claim 1, wherein the coil part is made of Ag, Au, Cu or Al.
- The electromagnetic booster of claim 1, wherein the coil part has a thickness or height of 5 ㎛ ~ 1 mm.
- The electromagnetic booster of claim 1, wherein the coil part has a pitch of 5 ~ 500 ㎛.
- A method of manufacturing an electromagnetic booster for wireless charging comprising a magnetic sheet and a coil part disposed on the magnetic sheet, the method comprising:forming the magnetic sheet with a first magnetic sheet member located at an edge portion and a second magnetic sheet member located to be adjacent to the first magnetic sheet member and having a different permeability rate from that of the first magnetic sheet member on the same plane.
- The method of claim 15, further comprising forming a concave part having a shape corresponding to the coil part by engraving a surface of the magnetic sheet; and forming the coil part in the concave part.
- The method of claim 16, wherein the engraving is performed using a laser exposure method, a dry etching method after masking, or a stepped pulley formation method with a difference in press between a corresponding area and a non-corresponding area of the engraving.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380063905.7A CN104838455B (en) | 2012-10-04 | 2013-10-04 | For the electromagnetism augmentor and its manufacture method of wireless charging |
US14/433,424 US9825482B2 (en) | 2012-10-04 | 2013-10-04 | Electromagnetic booster for wireless charging and method of manufacturing the same |
EP13843799.1A EP2904619B1 (en) | 2012-10-04 | 2013-10-04 | Electromagnetic booster for wireless charging and method of manufacturing the same |
US15/790,768 US20180047505A1 (en) | 2012-10-04 | 2017-10-23 | Electromagnetic Booster for Wireless Charging and Method of Manufacturing the Same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020120109900A KR101823542B1 (en) | 2012-10-04 | 2012-10-04 | Electromagnetic booster for wireless charge and method for producing same |
KR10-2012-0109900 | 2012-10-04 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/433,424 A-371-Of-International US9825482B2 (en) | 2012-10-04 | 2013-10-04 | Electromagnetic booster for wireless charging and method of manufacturing the same |
US15/790,768 Continuation US20180047505A1 (en) | 2012-10-04 | 2017-10-23 | Electromagnetic Booster for Wireless Charging and Method of Manufacturing the Same |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014054893A1 true WO2014054893A1 (en) | 2014-04-10 |
Family
ID=50435182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2013/008847 WO2014054893A1 (en) | 2012-10-04 | 2013-10-04 | Electromagnetic booster for wireless charging and method of manufacturing the same |
Country Status (5)
Country | Link |
---|---|
US (2) | US9825482B2 (en) |
EP (1) | EP2904619B1 (en) |
KR (1) | KR101823542B1 (en) |
CN (3) | CN107195450B (en) |
WO (1) | WO2014054893A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2980949A1 (en) * | 2014-08-01 | 2016-02-03 | J Touch Corporation | Thin-film coil component and charging apparatus and method for manufacturing the component |
CN105845382A (en) * | 2015-01-30 | 2016-08-10 | 三星电机株式会社 | Magnetic sheet and coil assembly including same |
CN105990912A (en) * | 2015-02-28 | 2016-10-05 | 怀化亚信电子有限公司 | High-performance wireless charging device |
CN106899090A (en) * | 2017-03-17 | 2017-06-27 | 宁波微鹅电子科技有限公司 | Wireless power component and electronic installation |
CN107912075A (en) * | 2015-08-04 | 2018-04-13 | 阿莫善斯有限公司 | vehicle wireless power transmission module |
CN111261392A (en) * | 2019-12-20 | 2020-06-09 | 南京矽力微电子技术有限公司 | Power transformer and method for manufacturing the same |
WO2020141378A1 (en) * | 2018-12-31 | 2020-07-09 | 3M Innovative Properties Company | Wireless power transfer |
Families Citing this family (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11329511B2 (en) | 2006-06-01 | 2022-05-10 | Mojo Mobility Inc. | Power source, charging system, and inductive receiver for mobile devices |
US11476566B2 (en) | 2009-03-09 | 2022-10-18 | Nucurrent, Inc. | Multi-layer-multi-turn structure for high efficiency wireless communication |
JP5965148B2 (en) * | 2012-01-05 | 2016-08-03 | 日東電工株式会社 | Power receiving module for mobile terminal using wireless power transmission and rechargeable battery for mobile terminal equipped with power receiving module for mobile terminal |
KR101823542B1 (en) * | 2012-10-04 | 2018-01-30 | 엘지이노텍 주식회사 | Electromagnetic booster for wireless charge and method for producing same |
WO2016010372A1 (en) * | 2014-07-15 | 2016-01-21 | 주식회사 아모텍 | Wireless charging module |
KR102047562B1 (en) * | 2014-07-29 | 2019-11-21 | 삼성전기주식회사 | Chip electronic component and manufacturing method thereof |
KR101952359B1 (en) | 2014-09-29 | 2019-02-26 | 엘지이노텍 주식회사 | Composite magnetic sheet and wireless charging module consisting the same |
KR101697303B1 (en) * | 2015-08-04 | 2017-01-17 | 주식회사 아모센스 | wireless charging transmission module for car |
KR101697304B1 (en) * | 2015-08-04 | 2017-01-17 | 주식회사 아모센스 | wireless charging transmission module for car |
KR101693538B1 (en) * | 2015-08-04 | 2017-01-06 | 주식회사 아모센스 | wireless charging transmission module for car |
US11205848B2 (en) | 2015-08-07 | 2021-12-21 | Nucurrent, Inc. | Method of providing a single structure multi mode antenna having a unitary body construction for wireless power transmission using magnetic field coupling |
US10636563B2 (en) | 2015-08-07 | 2020-04-28 | Nucurrent, Inc. | Method of fabricating a single structure multi mode antenna for wireless power transmission using magnetic field coupling |
US9948129B2 (en) * | 2015-08-07 | 2018-04-17 | Nucurrent, Inc. | Single structure multi mode antenna for wireless power transmission using magnetic field coupling having an internal switch circuit |
US9960628B2 (en) | 2015-08-07 | 2018-05-01 | Nucurrent, Inc. | Single structure multi mode antenna having a single layer structure with coils on opposing sides for wireless power transmission using magnetic field coupling |
US9941743B2 (en) * | 2015-08-07 | 2018-04-10 | Nucurrent, Inc. | Single structure multi mode antenna having a unitary body construction for wireless power transmission using magnetic field coupling |
US9941729B2 (en) * | 2015-08-07 | 2018-04-10 | Nucurrent, Inc. | Single layer multi mode antenna for wireless power transmission using magnetic field coupling |
US9941590B2 (en) * | 2015-08-07 | 2018-04-10 | Nucurrent, Inc. | Single structure multi mode antenna for wireless power transmission using magnetic field coupling having magnetic shielding |
US10063100B2 (en) | 2015-08-07 | 2018-08-28 | Nucurrent, Inc. | Electrical system incorporating a single structure multimode antenna for wireless power transmission using magnetic field coupling |
US9960629B2 (en) * | 2015-08-07 | 2018-05-01 | Nucurrent, Inc. | Method of operating a single structure multi mode antenna for wireless power transmission using magnetic field coupling |
US10658847B2 (en) | 2015-08-07 | 2020-05-19 | Nucurrent, Inc. | Method of providing a single structure multi mode antenna for wireless power transmission using magnetic field coupling |
WO2017031348A1 (en) | 2015-08-19 | 2017-02-23 | Nucurrent, Inc. | Multi-mode wireless antenna configurations |
US10090592B2 (en) * | 2015-10-29 | 2018-10-02 | Sonitus Technologies Inc. | Communication device |
KR102030704B1 (en) * | 2015-11-05 | 2019-10-10 | 주식회사 아모텍 | Combo type antenna module |
KR101813341B1 (en) * | 2015-12-28 | 2017-12-28 | 삼성전기주식회사 | Manufacturing Method of Magnetic sheet and Roller Therefore |
KR101831860B1 (en) * | 2016-05-31 | 2018-02-26 | 에스케이씨 주식회사 | Antenna device and preparation method thereof |
US20180006485A1 (en) * | 2016-07-02 | 2018-01-04 | Intel Corporation | Wireless docking mat for electronic devices |
US10879705B2 (en) | 2016-08-26 | 2020-12-29 | Nucurrent, Inc. | Wireless connector receiver module with an electrical connector |
KR20180029423A (en) * | 2016-09-12 | 2018-03-21 | 삼성전기주식회사 | Magnetic Sheet and Electronic Device |
US10868444B2 (en) | 2016-12-09 | 2020-12-15 | Nucurrent, Inc. | Method of operating a system having a substrate configured to facilitate through-metal energy transfer via near field magnetic coupling |
KR101808605B1 (en) * | 2016-12-22 | 2018-01-18 | 김재범 | Non-conductive frame coated with conductive layer transmitting the electormagnetic wave or having the function of heat radiation |
KR20180090091A (en) * | 2017-02-02 | 2018-08-10 | 삼성전기주식회사 | Magnetic Sheet and Electronic Device |
US11223234B2 (en) | 2017-02-13 | 2022-01-11 | Nucurrent, Inc. | Method of operating a wireless electrical energy transmission base |
KR20180101070A (en) | 2017-03-03 | 2018-09-12 | 삼성전기주식회사 | Coil module and wireless power transmitter using the same |
US11152151B2 (en) | 2017-05-26 | 2021-10-19 | Nucurrent, Inc. | Crossover coil structure for wireless transmission |
KR102122392B1 (en) * | 2017-09-18 | 2020-06-12 | 주식회사 아모센스 | Magnetic shielding sheet and wireless power transfer module including the same |
CN107749675A (en) * | 2017-10-26 | 2018-03-02 | 武汉慧驰科技有限公司 | Radio energy transmission system based on magnetic resonance coupling |
KR101922530B1 (en) * | 2018-04-17 | 2018-11-28 | 엘지이노텍 주식회사 | Wiress antenna for wireless charging and nfc communication, and wireless device having the same |
US11271430B2 (en) | 2019-07-19 | 2022-03-08 | Nucurrent, Inc. | Wireless power transfer system with extended wireless charging range |
US11227712B2 (en) | 2019-07-19 | 2022-01-18 | Nucurrent, Inc. | Preemptive thermal mitigation for wireless power systems |
US11056922B1 (en) | 2020-01-03 | 2021-07-06 | Nucurrent, Inc. | Wireless power transfer system for simultaneous transfer to multiple devices |
US11283303B2 (en) | 2020-07-24 | 2022-03-22 | Nucurrent, Inc. | Area-apportioned wireless power antenna for maximized charging volume |
CN112217293A (en) * | 2020-10-29 | 2021-01-12 | 宁波微鹅电子科技有限公司 | Charging positioning device |
CN112735763A (en) * | 2020-11-30 | 2021-04-30 | 纵目科技(上海)股份有限公司 | Spliced magnetic core and wireless charging transceiving coil |
US11881716B2 (en) | 2020-12-22 | 2024-01-23 | Nucurrent, Inc. | Ruggedized communication for wireless power systems in multi-device environments |
US11876386B2 (en) | 2020-12-22 | 2024-01-16 | Nucurrent, Inc. | Detection of foreign objects in large charging volume applications |
US11695302B2 (en) | 2021-02-01 | 2023-07-04 | Nucurrent, Inc. | Segmented shielding for wide area wireless power transmitter |
US11831174B2 (en) | 2022-03-01 | 2023-11-28 | Nucurrent, Inc. | Cross talk and interference mitigation in dual wireless power transmitter |
US12003116B2 (en) | 2022-03-01 | 2024-06-04 | Nucurrent, Inc. | Wireless power transfer system for simultaneous transfer to multiple devices with cross talk and interference mitigation |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1633017A1 (en) * | 2003-06-06 | 2006-03-08 | Sony Corporation | Antenna module and mobile communication terminal having the same |
US20110234014A1 (en) * | 2010-03-29 | 2011-09-29 | Sony Corporation | Antenna module and electronic apparatus |
KR101079679B1 (en) * | 2009-06-03 | 2011-11-04 | 동양미래대학 산학협력단 | Nothing junction all the member charging equipment |
EP2424072A2 (en) * | 2010-08-30 | 2012-02-29 | LG Electronics | Mobile terminal and wireless charging method thereof |
US20120074899A1 (en) * | 2011-08-04 | 2012-03-29 | Tsai Ming-Chiu | Wireless charging coil structure in electronic devices |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100231356B1 (en) * | 1994-09-12 | 1999-11-15 | 모리시타요이찌 | Laminated ceramic chip inductor and its manufacturing method |
TW531976B (en) * | 2001-01-11 | 2003-05-11 | Hanex Co Ltd | Communication apparatus and installing structure, manufacturing method and communication method |
JP3941508B2 (en) * | 2001-02-19 | 2007-07-04 | 株式会社村田製作所 | Multilayer impedance element |
FR2825228B1 (en) * | 2001-05-25 | 2003-09-19 | Framatome Connectors Int | METHOD FOR MANUFACTURING A PRINTED CIRCUIT AND PLANAR ANTENNA MANUFACTURED THEREWITH |
JP2004152980A (en) * | 2002-10-30 | 2004-05-27 | Fuji Electric Device Technology Co Ltd | Thin magnetic film inductor element and micro power conversion device using the same |
KR100523313B1 (en) * | 2005-04-26 | 2005-10-24 | (주) 아모센스 | Absorber for radio-frequency identificating antenna and radio-frequency identificating antenna using the same |
EP1724708B1 (en) * | 2005-04-26 | 2016-02-24 | Amotech Co., Ltd. | Magnetic sheet for radio frequency identification antenna, method of manufacturing the same. |
JP5390099B2 (en) * | 2005-11-01 | 2014-01-15 | 株式会社東芝 | Planar magnetic element |
US7952322B2 (en) * | 2006-01-31 | 2011-05-31 | Mojo Mobility, Inc. | Inductive power source and charging system |
US8552827B2 (en) * | 2006-07-21 | 2013-10-08 | Sumida Corporation | Coil component |
US8237622B2 (en) * | 2006-12-28 | 2012-08-07 | Philtech Inc. | Base sheet |
JP4432977B2 (en) * | 2007-01-30 | 2010-03-17 | Tdk株式会社 | Coil parts |
KR101187172B1 (en) * | 2007-03-07 | 2012-09-28 | 도다 고교 가부시끼가이샤 | Ferrite Molded Sheet, Sintered Ferrite Substrate and Antenna Module |
EP2203966B1 (en) * | 2007-10-15 | 2019-09-18 | Nxp B.V. | Method of controlling a power transfer system and power transfer system |
JP5332185B2 (en) * | 2007-11-16 | 2013-11-06 | ソニー株式会社 | Magnetic powder manufacturing method, magnetic sheet manufacturing method, and antenna module manufacturing method |
JP4572953B2 (en) * | 2008-05-14 | 2010-11-04 | セイコーエプソン株式会社 | Coil unit and electronic device using the same |
JP5521665B2 (en) * | 2009-03-26 | 2014-06-18 | セイコーエプソン株式会社 | Coil unit, power transmission device and power reception device using the same |
KR101197684B1 (en) * | 2009-04-07 | 2012-11-05 | 주식회사 아모텍 | Magnetic Sheet, RF Identification Antenna Having Radiation Pattern Incorporated into Magnetic Sheet, and Method for Producing the Same |
CN102549841B (en) * | 2009-07-28 | 2014-08-06 | 迪睿合电子材料有限公司 | Production method for antenna device |
US8752277B2 (en) * | 2009-07-28 | 2014-06-17 | Dexerials Corporation | Method for producing antenna device |
JP2011072097A (en) * | 2009-09-24 | 2011-04-07 | Panasonic Electric Works Co Ltd | Non-contact power transmission device |
CN203366973U (en) | 2011-01-26 | 2013-12-25 | 松下电器产业株式会社 | Contactless charging module and receiving-side and transmission-side contactless charger using same |
JP5077476B1 (en) | 2011-12-07 | 2012-11-21 | パナソニック株式会社 | Non-contact charging module and portable terminal equipped with the same |
JP5013019B1 (en) * | 2011-12-07 | 2012-08-29 | パナソニック株式会社 | Non-contact charging module and portable terminal equipped with the same |
CN102592817A (en) * | 2012-03-14 | 2012-07-18 | 深圳顺络电子股份有限公司 | Method for manufacturing stack coil device |
KR101580518B1 (en) * | 2012-04-05 | 2015-12-28 | 엘지전자 주식회사 | Antenna and mobile terminal therein |
KR101823542B1 (en) * | 2012-10-04 | 2018-01-30 | 엘지이노텍 주식회사 | Electromagnetic booster for wireless charge and method for producing same |
-
2012
- 2012-10-04 KR KR1020120109900A patent/KR101823542B1/en active IP Right Grant
-
2013
- 2013-10-04 CN CN201710378981.7A patent/CN107195450B/en not_active Expired - Fee Related
- 2013-10-04 CN CN201710378509.3A patent/CN107195449B/en not_active Expired - Fee Related
- 2013-10-04 US US14/433,424 patent/US9825482B2/en active Active
- 2013-10-04 CN CN201380063905.7A patent/CN104838455B/en not_active Expired - Fee Related
- 2013-10-04 WO PCT/KR2013/008847 patent/WO2014054893A1/en active Application Filing
- 2013-10-04 EP EP13843799.1A patent/EP2904619B1/en active Active
-
2017
- 2017-10-23 US US15/790,768 patent/US20180047505A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1633017A1 (en) * | 2003-06-06 | 2006-03-08 | Sony Corporation | Antenna module and mobile communication terminal having the same |
KR101079679B1 (en) * | 2009-06-03 | 2011-11-04 | 동양미래대학 산학협력단 | Nothing junction all the member charging equipment |
US20110234014A1 (en) * | 2010-03-29 | 2011-09-29 | Sony Corporation | Antenna module and electronic apparatus |
EP2424072A2 (en) * | 2010-08-30 | 2012-02-29 | LG Electronics | Mobile terminal and wireless charging method thereof |
US20120074899A1 (en) * | 2011-08-04 | 2012-03-29 | Tsai Ming-Chiu | Wireless charging coil structure in electronic devices |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2980949A1 (en) * | 2014-08-01 | 2016-02-03 | J Touch Corporation | Thin-film coil component and charging apparatus and method for manufacturing the component |
CN105845382A (en) * | 2015-01-30 | 2016-08-10 | 三星电机株式会社 | Magnetic sheet and coil assembly including same |
CN105845382B (en) * | 2015-01-30 | 2020-06-30 | 株式会社Wits | Magnetic sheet and coil assembly including the same |
CN105990912A (en) * | 2015-02-28 | 2016-10-05 | 怀化亚信电子有限公司 | High-performance wireless charging device |
CN107912075A (en) * | 2015-08-04 | 2018-04-13 | 阿莫善斯有限公司 | vehicle wireless power transmission module |
CN106899090A (en) * | 2017-03-17 | 2017-06-27 | 宁波微鹅电子科技有限公司 | Wireless power component and electronic installation |
WO2020141378A1 (en) * | 2018-12-31 | 2020-07-09 | 3M Innovative Properties Company | Wireless power transfer |
CN111261392A (en) * | 2019-12-20 | 2020-06-09 | 南京矽力微电子技术有限公司 | Power transformer and method for manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
US20150236545A1 (en) | 2015-08-20 |
KR101823542B1 (en) | 2018-01-30 |
CN107195450B (en) | 2019-12-10 |
US9825482B2 (en) | 2017-11-21 |
CN104838455A (en) | 2015-08-12 |
CN107195449A (en) | 2017-09-22 |
CN107195450A (en) | 2017-09-22 |
EP2904619B1 (en) | 2019-06-05 |
CN107195449B (en) | 2020-03-27 |
EP2904619A4 (en) | 2015-12-02 |
CN104838455B (en) | 2017-06-20 |
KR20140044022A (en) | 2014-04-14 |
US20180047505A1 (en) | 2018-02-15 |
EP2904619A1 (en) | 2015-08-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2014054893A1 (en) | Electromagnetic booster for wireless charging and method of manufacturing the same | |
WO2013165167A1 (en) | Magnetic film having wireless charging radiator function, method of manufacturing the same, and wireless charging device using the same | |
WO2013165166A1 (en) | Magnetic sheet having wireless charging radiator function, method of manufacturing the same, and wireless charging device using the same | |
WO2017078481A1 (en) | Combination-type antenna module | |
CN106898474B (en) | Coil block | |
WO2017069537A1 (en) | Protection coil and transformer using same | |
WO2017023080A1 (en) | Wireless power transfer module for vehicles | |
WO2015115789A1 (en) | Wireless charging substrate and device | |
WO2013172668A1 (en) | Antenna for communication terminal and method of manufacturing the same | |
WO2013180367A1 (en) | Wireless antenna including electromagnetic wave absorption sheet for both radio frequency identification and wireless charging and manufacturing method therefor | |
WO2019151746A1 (en) | Antenna module comprising shield layer and wireless power receiving device | |
CN108140951A (en) | Car antenna module | |
WO2019172595A1 (en) | Wireless power transmission apparatus | |
CN109196969A (en) | Mixed metal plate for magnetic screen and the wireless power transmission module including it | |
WO2016186444A1 (en) | Shield unit for wireless charging and wireless power transmission module comprising same | |
WO2016117867A1 (en) | Antenna device, manufacturing method therefor, and electronic device having antenna device | |
WO2016010374A1 (en) | Multilayer meta-material sheet, method for manufacturing same, and wireless charging module using same | |
CN106413245A (en) | Anti-EMI (Electro Magnetic Interference) circuit board with magnetic isolation, electric isolation and antenna | |
WO2012141394A1 (en) | Plate for a shield can for an smd process, manufacturing method thereof, and shield can using the plate | |
KR101629983B1 (en) | Coil Parts | |
CN212012267U (en) | Coil module | |
WO2020096094A1 (en) | Near field communication antenna structure, housing with the same, and electronic terminal | |
US11770021B2 (en) | Wireless charging module coated with magnetic material on surface of coil | |
KR20170142143A (en) | Electromagnetic booster for wireless charge and method for producing same | |
CN210517814U (en) | Relay system and relay device applied to wireless charging |
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: 13843799 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14433424 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2013843799 Country of ref document: EP |