WO2008016273A1 - Induction coil for cordless energy charging and data transfer - Google Patents

Induction coil for cordless energy charging and data transfer Download PDF

Info

Publication number
WO2008016273A1
WO2008016273A1 PCT/KR2007/003731 KR2007003731W WO2008016273A1 WO 2008016273 A1 WO2008016273 A1 WO 2008016273A1 KR 2007003731 W KR2007003731 W KR 2007003731W WO 2008016273 A1 WO2008016273 A1 WO 2008016273A1
Authority
WO
WIPO (PCT)
Prior art keywords
printed circuit
winding
induction coil
circuit pattern
connection part
Prior art date
Application number
PCT/KR2007/003731
Other languages
French (fr)
Inventor
Soon-Jong Hahn
Wi-Jin Kim
Do-Hyun Kim
Jong-Wook Shin
Hyo-Ill Lee
Original Assignee
Sk Chemicals Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sk Chemicals Co., Ltd. filed Critical Sk Chemicals Co., Ltd.
Priority to CN2007800371461A priority Critical patent/CN101523693B/en
Priority to JP2009522721A priority patent/JP2009545876A/en
Publication of WO2008016273A1 publication Critical patent/WO2008016273A1/en

Links

Classifications

    • 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
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/0006—Printed inductances
    • H01F17/0013—Printed inductances with stacked layers
    • 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
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
    • 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

Definitions

  • This invention relates to an induction coil for cordless energy charging and data transfer, and more specifically, this invention relates to an induction coil for cordless energy charging and data transfer which is used in charging a battery or transferring data by using an induction connection between a charger and a battery without a direct electric contact.
  • the battery pack in the machines consists of an internal battery cell, an input/output terminal, and so on, and is charged through a direct electric contact with an exclusive charger, which is separately supplied.
  • an exclusive charger which is separately supplied.
  • the exclusive charger for the battery pack have to be used for charging, and there are problems such as a bad contact between a battery pack and a charger, a wrong operation by electrical short, and so on.
  • a non-contacting battery in which a primary and secondary winding of a transformer are organized as a form of PCB (Printed Circuit Board) is disclosed.
  • PCB printed Circuit Board
  • a contactless battery charger in which a pair of PCBs constituting a winding circuit pattern is used as a transmitting part and a receiving part of a transformer is disclosed.
  • a noncontacting type charging system in which multiple layers of PCB constituting a winding circuit pattern are laminated and are series-connected, and then are used as a transmitting part or a receiving part to improve magnetic field strength in the receiving part, is disclosed.
  • the induction coil according to the present invention has a characteristic that uniformity of product quality is good, and is formed with not a series type but a parallel type, and is made of metals such as copper, zinc, silver, gold, white gold, tin, as well as aluminum, and is prepared with various methods such as an etching method, a sputtering method, a printing method, and so on.
  • the present invention provides an induction coil which is formed such that more than two printed circuit boards, on which a prescribed circuit pattern is formed, are laminated, wherein first ends positioned on an outside of the circuit patterns are electrically connected by a first connection part penetrating the first ends, and second ends positioned on an inside of the circuit patterns are electrically connected by a second connection part penetrating the second ends.
  • the present invention provides a cordless charging apparatus which comprises a current transmitting part which is connected to a power supply, and includes a transmitting primary winding for transmitting a current generated from the power supply; and a current receiving part which receives the current with being induction- connected to the transmitting primary winding, and includes a receiving second winding for charging a battery with the current received, wherein at least one winding, which is selected from the group including the transmitting primary winding and the receiving second winding, is formed such that more than two printed circuit boards on which a prescribed circuit pattern is formed are laminated, and first ends positioned on an outside of the circuit patterns are electrically connected by a first connection part penetrating the first ends, and second ends positioned on an inside of the circuit patterns are electrically connected by a second connection part penetrating the second ends.
  • FIG. 1 is a drawing for showing a structure and an operation condition of an induction coil for cordless energy charging and data transfer according to an embodiment of the present invention.
  • a cordless charging apparatus according to the present invention, comprises a current transmitting part 20 which is connected to a power supply 10, and includes a transmitting primary winding 22 for transmitting a current generated from the power supply 10; and a current receiving part 30 which receives the current with being induction-connected to the transmitting primary winding 22, and includes a receiving second winding 32 for charging a battery with the current received.
  • the current receiving part 30 is united together with the battery 12 charged, or can be prepared in a wireless apparatus 14 to which the battery 12 is attached.
  • the current receiving part 30 has a structure of attaching and detaching to the wireless apparatus 14, together or separately with the battery 12.
  • the current transmitting part 20 preferably has a structure of pad type.
  • the current transmitting part 20 and the current receiving part 30 convert the common use power supply 10 to be suitable for charging the battery 12, and include a general various electronic device for charging the battery 12.
  • the current transmitting part 20 can be equipped with a general diode rectifier, a free voltage converter, an AC/ DC converter, a DC/DC converter, an inverter, and so on
  • the current receiving part 30 can be equipped with a general rectifier, a capacitor, and so on, and a structure of these devices, for example, is disclosed in Korean Publication No. 2002-57469, Korean Utility No. 0357251, and so on.
  • FIG. 2 is an exploded perspective view for showing a structure of a transmitting primary winding 22 and/or a receiving second winding 32 used in an induction coil for cordless energy charging and data transfer according to an embodiment of the present invention
  • FIGS. 3 to 5 are respectively a front view, a rear view, and a side cross sectional view at line A-A of windings 22, 32 used in an induction coil for cordless energy charging and data transfer according to an embodiment of the present invention.
  • FIGS. 3 to 5 are respectively a front view, a rear view, and a side cross sectional view at line A-A of windings 22, 32 used in an induction coil for cordless energy charging and data transfer according to an embodiment of the present invention.
  • the windings 22, 32 used in a cordless charging apparatus are formed such that more than two printed circuit boards 50 are laminated, and on the respective printed circuit board 50, a prescribed circuit pattern 52, for example preferably a circular spiral circuit pattern 52 or a rectangular spiral circuit pattern, is formed with a same shape.
  • a prescribed circuit pattern 52 for example preferably a circular spiral circuit pattern 52 or a rectangular spiral circuit pattern, is formed with a same shape.
  • first ends 54 positioned on an outside of the circuit patterns 52 are electrically connected by a first connection part 54a penetrating every first ends 54
  • second ends 56 positioned on an inside of the circuit patterns 52 are electrically connected by a second connection part 56a penetrating every second ends 56.
  • the first connection part 54a and second connection part 56a are respectively connected to a first terminal 54b and a second terminal 56b, and as occasion demands, are connected to the power supply 10 or the battery 12 through a common charging device (see FIG. 1).
  • a common charging device see FIG. 1.
  • the transmitting primary winding 22 and the receiving second winding 32 have a same shape to improve power transmission efficiency.
  • the transmitting primary winding 22 and/or the receiving second winding 32 are respectively attached to an instrument for transmitting data and an instrument for receiving data, and then are used as an induction coil for data transfer.
  • the transmitting primary winding 22 and/or the receiving second winding 32 can be used as the induction coil for not only powers transmit but also data transfer.
  • powers having a signal interval or a signal strength corresponding to a prescribed data are supplied to the transmitting primary winding 22, and then are received in the receiving second winding 32, so the data can be transmitted from the instruments for transmitting data (the primary part) to the instruments for receiving data (the second part).
  • powers having a signal interval or a signal strength corresponding to a prescribed data are supplied to the transmitting primary winding 22, and then are received in the receiving second winding 32, so the data can be transmitted from the instruments for transmitting data (the primary part) to the instruments for receiving data (the second part).
  • a third connection part 55 is further formed with electronically connected to the circuit pattern 52.
  • the data signals permitted to the third connection part 55 are transmitted to the receiving second winding 32, with the current permitted to the first connection part 54a and the second connection part 56a. Accordingly, the receiving second winding 32 can receive data by separating the data signal from the current received.
  • the receiving second winding 32 can receive data by separating the data signal from the current received.
  • a data transfer function can be carried out with a charging function.
  • a laminated layer number of the printed circuit board 50, on which the circuit pattern 52 is formed is more than 2, preferably 3 to 15, and more preferably 3 to 10. If the laminated layer number of the printed circuit board 50 is too small, power transmission efficiency and transmission velocity may be insufficiently improved, and if the laminated layer number of the printed circuit board 50 is too many, power transmission efficiency can be rather reduced. Also, in the spiral circuit pattern 52 formed in the printed circuit board 50, a number of the winding turns in the circuit pattern 52 is preferably 5 to 50, and more preferably 10 to 30, and the most outer diameter of the circuit pattern 52 is preferably 10 to 200 mm, and more preferably 20 to 80mm.
  • the circuit pattern 52 can has a circular shape as shown in FIG. 3, or a rectangular shape as shown in FIG. 7, and as occasion needed, can have various shapes such as triangle, trapezoid, diamond, and so on.
  • a withdrawing line 57 which withdraws the second connection part 56a connecting the second ends 56 of the multiple spiral circuit patterns 52 out of the windings 22, 32, can be formed on a back side of the most bottom printed circuit board 50 of the windings 22, 32. Also, it is preferable that the withdrawing line 57 is connected to a third connection part 58 penetrating the multiple printed circuit boards 52, and then is connected to a second terminal 56b positioned on an upper part of the most top printed circuit board 50 among the multiple printed circuit boards 50.
  • the second connection part 56a connecting the second ends 56 of the multiple spiral circuit patterns 52, and the first connection part 54a connecting the first ends 56 are positioned on the same plane, so the printed circuit board 50 can be efficiently arranged in the current transmitting part 20 and the current receiving part 30.
  • a separate printed circuit board 59 on which the withdrawing line 57 is formed can be prepared, and can be bonded on the back side of the most bottom printed circuit board 50, on which the second connection part 56a and the third connection part 58 are formed.
  • the printed circuit boards 50, 59 according to the present invention can be prepared by a method that a prescribed circuit pattern 52 or a pattern of the withdrawing line 57 is formed on an upper part of a substrate made of a insulation material by a conventional photo-lithography.
  • the printed circuit boards 50, 59 according to the present invention can be prepared by a method that a circuit pattern 52 or a pattern of the withdrawing line 57 is formed on an upper part of a heat-resistant plastic film such as a flexible polyester film, a polyimide film, and so on, like the case of a Flexible Printed Circuit (FPC), a flexible copper clad laminate, by using a conductive material such as copper, aluminum, white gold, nickel, zinc, silver, gold, tin, and conductive polymer. Namely, It is preferable to use the flexible copper clad laminate, because it is easy that the laminated films, the printed circuit boards 50, 59, are bonded by insulation adhesives or are physically laminated.
  • FPC Flexible Printed Circuit
  • the printed circuit boards 50, 59 according to the present invention can be prepared by a method of depositing by sputtering a conductive material on the substrate such as a heat-resistant film and so on, or a method of printing pastes including a conductive material on the substrate such as a heat-resistant film and so on, or a method of forming a conductive material layer on the substrate and then etching the conductive material layer in a prescribed shape.
  • the conductive material included in the pastes has a particle of nano size. Accordingly, by the above methods, a shape of the circuit pattern 52 can be freely organized, and a thickness of the circuit pattern 52 can be adjusted according to the usage.
  • heat generation amounts generated from the printed circuit boards 50, 59 will be controlled, by adjusting the shape and thickness of the circuit pattern.
  • an electromagnetic waves interception can be taken effect when the conductive material such as Si, Ag, Fe, and so on is coated on the insulation substrate such as the heat-resistant film, and so on as a paste form (here, it is preferable not to contact with the circuit pattern), or is impregnated into an inner substrate.
  • the first to third connection part 54a, 56a, 58 can be formed by penetrating the laminated circuit pattern 52 with a small drill, and inserting the conductive material such as conductive polymer, copper, and so on into the penetrating hole.
  • the spiral circuit pattern 52 formed in the multiple printed circuit boards 50 has a structure of parallel connection between the first connection part 54a and the second connection part 56a, that is, a pair of terminals 54b , 56b. That is, every beginning points of the spiral circuit pattern 52 formed in the printed circuit boards 50 is connected by the first connection part 54a, and every ending points of the spiral circuit pattern 52 is connected by the second connection part 56a, so the spiral circuit pattern 52 are parallel-connected. Because of the parallel connection between the spiral circuit patterns 52, impedance of total circuits is increasingly reduced, and power transmission efficiency is improved, as compared with a series connection in the spiral circuit patterns 52.
  • every spiral circuit pattern 52 when the every spiral circuit pattern 52 is series connected, currents in the adjacent printed circuit board 50 move in an opposite direction each other.
  • currents in adjacent printed circuit board 50 move in a same direction or trace. Accordingly, current intensity is amplified, and then power transmission efficiency is improved.
  • the every printed circuit board 50 has a same shape, and the first connection part 54a, the second connection part 56a, and as occasion needed, the third connection part 58, can be formed respectively by one hole formation process in a lamination condition of the printed circuit boards 50. So, there are advantages that a preparation process is simple, and a mass production is easy.
  • both the transmitting primary winding 22 and the receiving second winding 32 can be composed of the laminated printed circuit board 50, and as occasion needed, either the transmitting primary winding 22 or the receiving second winding 32 may be composed of the laminated printed circuit board 50.
  • a cordless charging apparatus has advantages that not only the power transmission efficiency and transmission velocity is excellent but also preparation and mass production is easy. Also, A cordless charging apparatus according to the present invention is prepared in a form of thin film such as pad, and so on, so the cordless charging apparatus can be applied to an wireless instrument of various battery type.
  • the cordless charging apparatus can be usefully applied to every wired wireless apparatus being charged by a secondary cell, for example, not only a portable electronic instrument such as a mobile phone, a MP3 player, a PDA, a notebook PC, a digital camera, a camcorder, mobile electronic games, a PMP(portable media player), and so on, but also various wireless instruments such as a portable medical apparatus, a robot, a robot cleaner, a toy robot, a small motor vehicle, or an automobile, an auto-vacuum cleaner, an auto shaver, an wireless keyboard, and so on.
  • the cordless charging apparatus according to the present invention can be used for instant charging using instant induction current like the case of a mouse and a mouse pad.
  • FIG. 1 is a drawing for showing a structure and an operation condition of an induction coil for cordless energy charging and data transfer according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view for showing a structure of a transmitting primary winding or a receiving second winding used in an induction coil for cordless energy charging and data transfer according to an embodiment of the present invention.
  • FIGS. 3 to 5 are respectively a front view, a rear view, and a side cross sectional view at line A-A of windings used in an induction coil for cordless energy charging and data transfer according to an embodiment of the present invention.
  • FIG. 6 is a front view of a winding used in an induction coil for data transfer according to another embodiment of the present invention.
  • FIG. 7 is a front view of a winding used in an induction coil for cordless energy charging and data transfer according to still another embodiment of the present invention.
  • FIG. 8 is a side cross sectional view of a winding used in an induction coil for cordless energy charging and data transfer according to still another embodiment of the present invention.
  • a spiral circuit pattern in which a number of winding turns was 18, and an outer diameter was 42mm, and a thickness (a thickness of circuit) was 0.65mm, and a distance between the patterns was 0.2mm, was formed on an upper part of a polyimide film of thickness of 1OD by using copper, and then were laminated with 8 layers to be used as a transmitting primary winding of a current transmitting part of pad type.
  • a spiral circuit pattern in which a number of winding turns was 18, and an outer diameter was 30mm, and a thickness (a thickness of circuit) was 0.54mm, and a distance between the patterns was 0.2mm, was formed on an upper part of a polyimide film of thickness of 1OD by using copper, and then were laminated with 4 layers to be used as a receiving second winding of a current receiving part of pad type.
  • the current transmitting part and the current receiving part were contacted, and a current of 0.15 IA and 4.62V was applied to the transmitting primary winding, and then the current and voltage generated in the receiving second winding were measured, and accordingly, the current of 0.112A and 3.81V was detected, and the power transmission efficiency was 61%.
  • Example 1 The same transmitting primary winding in the Example 1 was used as a transmitting primary winding of a current transmitting part of pad type.
  • a spiral circuit pattern in which a number of winding turns was 18 and an outer diameter was 35mm, and a thickness (a thickness of circuit) was 0.67mm, and a distance between the patterns was 0.2mm, was formed on an upper part of a polyimide film of thickness of 1OD by using copper, and then were laminated with 5 layers to be used as a receiving second winding of a current receiving part of pad type.
  • the current transmitting part and the current receiving part were contacted, and a current of 0.15 IA and 4.62V was applied to the transmitting primary winding, and then the current and voltage generated in the receiving second winding were measured, and accordingly, the current of 0.115A and 3.85V was detected, and the power transmission efficiency was 63%.
  • Example 1 The same transmitting primary winding in the Example 1 was used as a transmitting primary winding of a current transmitting part of pad type.
  • the current transmitting part and the current receiving part were contacted, and a current of 0.15 IA and 4.62V was applied to the transmitting primary winding, and then the current and voltage generated in the receiving second winding were measured, and accordingly, the current of 0.119A and 3.88V was detected, and the power transmission efficiency was 66%.
  • Example 1 The same transmitting primary winding in the Example 1 was used as a transmitting primary winding of a current transmitting part of pad type.
  • a spiral circuit pattern in which a number of winding turns was 16, and an outer diameter was 30mm, and a thickness (a thickness of circuit) was 0.54mm, and a distance between the patterns was 0.2mm, was formed on an upper part of a polyimide film of thickness of 1OD by using copper, and then the pattern was used without a lamination step as a receiving second winding of a current receiving part of pad type.
  • the current transmitting part and the current receiving part were contacted, and a current of 0.15 IA and 4.62V was applied to the transmitting primary winding, and then the current and voltage generated in the receiving second winding were measured, and accordingly, the current of 0.072A and 3.10V was detected, and the power transmission efficiency was 32%.

Landscapes

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

Abstract

An induction coil for cordless energy charging and data transfer, which is used for charging a battery and transferring the data by using an induction connection between a charger and a battery without a direct electric contact, is disclosed. The induction coil is formed such that more than two printed circuit boards, on which a prescribed circuit pattern is formed, are laminated, wherein first ends positioned on an outside of the circuit patterns are electrically connected by a first connection part penetrating the first ends, and second ends positioned on an inside of the circuit patterns are electrically connected by a second connection part penetrating the second ends.

Description

Description
INDUCTION COIL FOR CORDLESS ENERGY CHARGING
AND DATA TRANSFER
Technical Field
[1] This invention relates to an induction coil for cordless energy charging and data transfer, and more specifically, this invention relates to an induction coil for cordless energy charging and data transfer which is used in charging a battery or transferring data by using an induction connection between a charger and a battery without a direct electric contact.
[2]
Background Art
[3] Recently, as developments and common use of not only a portable electronic machine such as a mobile phone, a digital camera, and so on, but also an wireless electronic machine such as a robot cleaner, a wireless keyboard, and so on, the use of a battery pack which operates as a power supply in the machines has increased. The battery pack in the machines consists of an internal battery cell, an input/output terminal, and so on, and is charged through a direct electric contact with an exclusive charger, which is separately supplied. However, because the battery pack and the charger has various types and sizes according to products or company, the exclusive charger for the battery pack have to be used for charging, and there are problems such as a bad contact between a battery pack and a charger, a wrong operation by electrical short, and so on.
[4]
[5] To solve these problems, a method that a battery is cordlessly connected to a charger by using an induction connection between a charger and a battery has been studied. In the cordless charging method, a transmitting primary winding of a transformer which operates at high frequency is positioned on a charger and a receiving secondary winding of the transformer is positioned on a mobile apparatus such as a battery pack, so energy in the charger is supplied to the battery pack of the mobile apparatus by a magnetic connection. However, when a coil and a magnetic core is used as a means of the induction connection like a conventional transformer, there are disadvantages that it is complicated to prepare the coil and the magnetic core, and volume and weight of the charger and the mobile apparatus increase. Accordingly, in Korean Patent Laid-open No. 2002-57469 and Korean Utility model No. 0357251, a non-contacting battery in which a primary and secondary winding of a transformer are organized as a form of PCB (Printed Circuit Board) is disclosed. Specifically, in Korean Patent Laid-open No. 2002-57469, a contactless battery charger in which a pair of PCBs constituting a winding circuit pattern is used as a transmitting part and a receiving part of a transformer is disclosed. In Korean Utility model No. 0357251, a noncontacting type charging system, in which multiple layers of PCB constituting a winding circuit pattern are laminated and are series-connected, and then are used as a transmitting part or a receiving part to improve magnetic field strength in the receiving part, is disclosed. Like this, when multiple PCBs constituting a winding circuit pattern are series-connected, the magnetic field strength generated increases, so amounts of current transmission increase to some degree. However, because resistance value of the circuit pattern increase, power transmission efficiency decreases, and accordingly heats and electromagnetic waves are relatively increased. After all, the life of an apparatus is reduced and undesirable effects are given to a human body, and in addition, there is disadvantage that a series-connection process of PCBs is complicated.
[6]
Disclosure of Invention Technical Problem
[7] Therefore, it is an object of the present invention to provide an induction coil for energy charging and data transfer of which power transmission efficiency and transmission velocity are excellent. It is another object of the present invention to provide an induction coil for energy charging and data transfer of which preparation and mass-production are easy. It is still another object of the present invention to provide an induction coil for energy charging and data transfer of which thin film process is easy. The induction coil according to the present invention has a characteristic that uniformity of product quality is good, and is formed with not a series type but a parallel type, and is made of metals such as copper, zinc, silver, gold, white gold, tin, as well as aluminum, and is prepared with various methods such as an etching method, a sputtering method, a printing method, and so on.
[8]
Technical Solution
[9] To accomplish these objects, the present invention provides an induction coil which is formed such that more than two printed circuit boards, on which a prescribed circuit pattern is formed, are laminated, wherein first ends positioned on an outside of the circuit patterns are electrically connected by a first connection part penetrating the first ends, and second ends positioned on an inside of the circuit patterns are electrically connected by a second connection part penetrating the second ends.
[10] Also, the present invention provides a cordless charging apparatus which comprises a current transmitting part which is connected to a power supply, and includes a transmitting primary winding for transmitting a current generated from the power supply; and a current receiving part which receives the current with being induction- connected to the transmitting primary winding, and includes a receiving second winding for charging a battery with the current received, wherein at least one winding, which is selected from the group including the transmitting primary winding and the receiving second winding, is formed such that more than two printed circuit boards on which a prescribed circuit pattern is formed are laminated, and first ends positioned on an outside of the circuit patterns are electrically connected by a first connection part penetrating the first ends, and second ends positioned on an inside of the circuit patterns are electrically connected by a second connection part penetrating the second ends.
[H]
[12] Hereinafter, a more complete appreciation of the invention will be better appreciated by reference to the following detailed description.
[13] FIG. 1 is a drawing for showing a structure and an operation condition of an induction coil for cordless energy charging and data transfer according to an embodiment of the present invention. As shown in FIG. 1, a cordless charging apparatus according to the present invention, comprises a current transmitting part 20 which is connected to a power supply 10, and includes a transmitting primary winding 22 for transmitting a current generated from the power supply 10; and a current receiving part 30 which receives the current with being induction-connected to the transmitting primary winding 22, and includes a receiving second winding 32 for charging a battery with the current received. The current receiving part 30 is united together with the battery 12 charged, or can be prepared in a wireless apparatus 14 to which the battery 12 is attached. Also the current receiving part 30 has a structure of attaching and detaching to the wireless apparatus 14, together or separately with the battery 12. Also, the current transmitting part 20 preferably has a structure of pad type. The current transmitting part 20 and the current receiving part 30 convert the common use power supply 10 to be suitable for charging the battery 12, and include a general various electronic device for charging the battery 12. Namely, the current transmitting part 20 can be equipped with a general diode rectifier, a free voltage converter, an AC/ DC converter, a DC/DC converter, an inverter, and so on, and the current receiving part 30 can be equipped with a general rectifier, a capacitor, and so on, and a structure of these devices, for example, is disclosed in Korean Publication No. 2002-57469, Korean Utility No. 0357251, and so on.
[14]
[15] FIG. 2 is an exploded perspective view for showing a structure of a transmitting primary winding 22 and/or a receiving second winding 32 used in an induction coil for cordless energy charging and data transfer according to an embodiment of the present invention, and FIGS. 3 to 5 are respectively a front view, a rear view, and a side cross sectional view at line A-A of windings 22, 32 used in an induction coil for cordless energy charging and data transfer according to an embodiment of the present invention. As shown in FIGS. 2 to 5, the windings 22, 32 used in a cordless charging apparatus according to the present invention are formed such that more than two printed circuit boards 50 are laminated, and on the respective printed circuit board 50, a prescribed circuit pattern 52, for example preferably a circular spiral circuit pattern 52 or a rectangular spiral circuit pattern, is formed with a same shape. Among both ends of the circuit pattern 52, first ends 54 positioned on an outside of the circuit patterns 52 are electrically connected by a first connection part 54a penetrating every first ends 54, and second ends 56 positioned on an inside of the circuit patterns 52 are electrically connected by a second connection part 56a penetrating every second ends 56. The first connection part 54a and second connection part 56a are respectively connected to a first terminal 54b and a second terminal 56b, and as occasion demands, are connected to the power supply 10 or the battery 12 through a common charging device (see FIG. 1). Here, it is preferable that the transmitting primary winding 22 and the receiving second winding 32 have a same shape to improve power transmission efficiency.
[16]
[17] As shown in FIG. 1, the transmitting primary winding 22 and/or the receiving second winding 32, having a similar shape, are respectively attached to an instrument for transmitting data and an instrument for receiving data, and then are used as an induction coil for data transfer. Namely, the transmitting primary winding 22 and/or the receiving second winding 32 can be used as the induction coil for not only powers transmit but also data transfer. For example, by a method of that powers having a signal interval or a signal strength corresponding to a prescribed data are supplied to the transmitting primary winding 22, and then are received in the receiving second winding 32, so the data can be transmitted from the instruments for transmitting data (the primary part) to the instruments for receiving data (the second part). Also, as shown in FIG. 6, in addition to the first connection part 54a and the second connection part 56a, a third connection part 55 is further formed with electronically connected to the circuit pattern 52. When data signals are permitted to the third connection part 55, the data signals permitted to the third connection part 55 are transmitted to the receiving second winding 32, with the current permitted to the first connection part 54a and the second connection part 56a. Accordingly, the receiving second winding 32 can receive data by separating the data signal from the current received. Like this, by using the three terminals including the third connection part 55, data can be more efficiently transmitted as minimizing additional circuits. Eventually, a data transfer function can be carried out with a charging function.
[18]
[19] A laminated layer number of the printed circuit board 50, on which the circuit pattern 52 is formed, is more than 2, preferably 3 to 15, and more preferably 3 to 10. If the laminated layer number of the printed circuit board 50 is too small, power transmission efficiency and transmission velocity may be insufficiently improved, and if the laminated layer number of the printed circuit board 50 is too many, power transmission efficiency can be rather reduced. Also, in the spiral circuit pattern 52 formed in the printed circuit board 50, a number of the winding turns in the circuit pattern 52 is preferably 5 to 50, and more preferably 10 to 30, and the most outer diameter of the circuit pattern 52 is preferably 10 to 200 mm, and more preferably 20 to 80mm. If the number of winding turns and the diameter of the circuit pattern 52 are out of that range, there are problems that impedance can increase due to reduction of the circuit width, and power transmission efficiency can be rather reduced due to excessive increase of the circuit width. The circuit pattern 52 can has a circular shape as shown in FIG. 3, or a rectangular shape as shown in FIG. 7, and as occasion needed, can have various shapes such as triangle, trapezoid, diamond, and so on.
[20]
[21] As shown in FIGS. 4 and 5, a withdrawing line 57, which withdraws the second connection part 56a connecting the second ends 56 of the multiple spiral circuit patterns 52 out of the windings 22, 32, can be formed on a back side of the most bottom printed circuit board 50 of the windings 22, 32. Also, it is preferable that the withdrawing line 57 is connected to a third connection part 58 penetrating the multiple printed circuit boards 52, and then is connected to a second terminal 56b positioned on an upper part of the most top printed circuit board 50 among the multiple printed circuit boards 50. Like this, the second connection part 56a connecting the second ends 56 of the multiple spiral circuit patterns 52, and the first connection part 54a connecting the first ends 56 are positioned on the same plane, so the printed circuit board 50 can be efficiently arranged in the current transmitting part 20 and the current receiving part 30. Also, as shown in FIG. 8, instead of that the withdrawing line 57 is formed on a back side of the most bottom printed circuit board 50, a separate printed circuit board 59 on which the withdrawing line 57 is formed can be prepared, and can be bonded on the back side of the most bottom printed circuit board 50, on which the second connection part 56a and the third connection part 58 are formed.
[22]
[23] The printed circuit boards 50, 59 according to the present invention can be prepared by a method that a prescribed circuit pattern 52 or a pattern of the withdrawing line 57 is formed on an upper part of a substrate made of a insulation material by a conventional photo-lithography. Preferably, The printed circuit boards 50, 59 according to the present invention can be prepared by a method that a circuit pattern 52 or a pattern of the withdrawing line 57 is formed on an upper part of a heat-resistant plastic film such as a flexible polyester film, a polyimide film, and so on, like the case of a Flexible Printed Circuit (FPC), a flexible copper clad laminate, by using a conductive material such as copper, aluminum, white gold, nickel, zinc, silver, gold, tin, and conductive polymer. Namely, It is preferable to use the flexible copper clad laminate, because it is easy that the laminated films, the printed circuit boards 50, 59, are bonded by insulation adhesives or are physically laminated. Also, the printed circuit boards 50, 59 according to the present invention can be prepared by a method of depositing by sputtering a conductive material on the substrate such as a heat-resistant film and so on, or a method of printing pastes including a conductive material on the substrate such as a heat-resistant film and so on, or a method of forming a conductive material layer on the substrate and then etching the conductive material layer in a prescribed shape. Here, it is preferable that the conductive material included in the pastes has a particle of nano size. Accordingly, by the above methods, a shape of the circuit pattern 52 can be freely organized, and a thickness of the circuit pattern 52 can be adjusted according to the usage. Accordingly, heat generation amounts generated from the printed circuit boards 50, 59 will be controlled, by adjusting the shape and thickness of the circuit pattern. Also, an electromagnetic waves interception can be taken effect when the conductive material such as Si, Ag, Fe, and so on is coated on the insulation substrate such as the heat-resistant film, and so on as a paste form (here, it is preferable not to contact with the circuit pattern), or is impregnated into an inner substrate.
[24]
[25] Also, the first to third connection part 54a, 56a, 58 can be formed by penetrating the laminated circuit pattern 52 with a small drill, and inserting the conductive material such as conductive polymer, copper, and so on into the penetrating hole.
[26]
[27] By a organization like this, the spiral circuit pattern 52 formed in the multiple printed circuit boards 50 has a structure of parallel connection between the first connection part 54a and the second connection part 56a, that is, a pair of terminals 54b , 56b. That is, every beginning points of the spiral circuit pattern 52 formed in the printed circuit boards 50 is connected by the first connection part 54a, and every ending points of the spiral circuit pattern 52 is connected by the second connection part 56a, so the spiral circuit pattern 52 are parallel-connected. Because of the parallel connection between the spiral circuit patterns 52, impedance of total circuits is increasingly reduced, and power transmission efficiency is improved, as compared with a series connection in the spiral circuit patterns 52. Also, when the every spiral circuit pattern 52 is series connected, currents in the adjacent printed circuit board 50 move in an opposite direction each other. However when the every spiral circuit pattern 52 is parallel connected according to the present invention, currents in adjacent printed circuit board 50 move in a same direction or trace. Accordingly, current intensity is amplified, and then power transmission efficiency is improved. Also, in the present invention, the every printed circuit board 50 has a same shape, and the first connection part 54a, the second connection part 56a, and as occasion needed, the third connection part 58, can be formed respectively by one hole formation process in a lamination condition of the printed circuit boards 50. So, there are advantages that a preparation process is simple, and a mass production is easy. Also, in the present invention, both the transmitting primary winding 22 and the receiving second winding 32 can be composed of the laminated printed circuit board 50, and as occasion needed, either the transmitting primary winding 22 or the receiving second winding 32 may be composed of the laminated printed circuit board 50. [28]
Advantageous Effects
[29] A cordless charging apparatus according to the present invention has advantages that not only the power transmission efficiency and transmission velocity is excellent but also preparation and mass production is easy. Also, A cordless charging apparatus according to the present invention is prepared in a form of thin film such as pad, and so on, so the cordless charging apparatus can be applied to an wireless instrument of various battery type. Namely, the cordless charging apparatus according to the present invention can be usefully applied to every wired wireless apparatus being charged by a secondary cell, for example, not only a portable electronic instrument such as a mobile phone, a MP3 player, a PDA, a notebook PC, a digital camera, a camcorder, mobile electronic games, a PMP(portable media player), and so on, but also various wireless instruments such as a portable medical apparatus, a robot, a robot cleaner, a toy robot, a small motor vehicle, or an automobile, an auto-vacuum cleaner, an auto shaver, an wireless keyboard, and so on. Also, the cordless charging apparatus according to the present invention can be used for instant charging using instant induction current like the case of a mouse and a mouse pad.
[30]
Brief Description of the Drawings
[31] FIG. 1 is a drawing for showing a structure and an operation condition of an induction coil for cordless energy charging and data transfer according to an embodiment of the present invention. [32] FIG. 2 is an exploded perspective view for showing a structure of a transmitting primary winding or a receiving second winding used in an induction coil for cordless energy charging and data transfer according to an embodiment of the present invention.
[33] FIGS. 3 to 5 are respectively a front view, a rear view, and a side cross sectional view at line A-A of windings used in an induction coil for cordless energy charging and data transfer according to an embodiment of the present invention.
[34] FIG. 6 is a front view of a winding used in an induction coil for data transfer according to another embodiment of the present invention.
[35] FIG. 7 is a front view of a winding used in an induction coil for cordless energy charging and data transfer according to still another embodiment of the present invention.
[36] FIG. 8 is a side cross sectional view of a winding used in an induction coil for cordless energy charging and data transfer according to still another embodiment of the present invention.
[37]
Best Mode for Carrying Out the Invention
[38] Hereinafter, the preferable examples are provided for better understanding of the present invention. However, the present invention is not limited to the following examples.
[39]
[40] [Example 1]
[41] A spiral circuit pattern, in which a number of winding turns was 18, and an outer diameter was 42mm, and a thickness (a thickness of circuit) was 0.65mm, and a distance between the patterns was 0.2mm, was formed on an upper part of a polyimide film of thickness of 1OD by using copper, and then were laminated with 8 layers to be used as a transmitting primary winding of a current transmitting part of pad type. A spiral circuit pattern, in which a number of winding turns was 18, and an outer diameter was 30mm, and a thickness (a thickness of circuit) was 0.54mm, and a distance between the patterns was 0.2mm, was formed on an upper part of a polyimide film of thickness of 1OD by using copper, and then were laminated with 4 layers to be used as a receiving second winding of a current receiving part of pad type. The current transmitting part and the current receiving part were contacted, and a current of 0.15 IA and 4.62V was applied to the transmitting primary winding, and then the current and voltage generated in the receiving second winding were measured, and accordingly, the current of 0.112A and 3.81V was detected, and the power transmission efficiency was 61%. Here, the power transmission efficiency was calculated by means of that the power transmission efficiency = (currentxvoltage of the receiving second winding)÷(currentxvoltage of the transmitting primary winding)xlOO.
[42]
[43] [Example 2]
[44] The same transmitting primary winding in the Example 1 was used as a transmitting primary winding of a current transmitting part of pad type. A spiral circuit pattern, in which a number of winding turns was 18 and an outer diameter was 35mm, and a thickness (a thickness of circuit) was 0.67mm, and a distance between the patterns was 0.2mm, was formed on an upper part of a polyimide film of thickness of 1OD by using copper, and then were laminated with 5 layers to be used as a receiving second winding of a current receiving part of pad type. The current transmitting part and the current receiving part were contacted, and a current of 0.15 IA and 4.62V was applied to the transmitting primary winding, and then the current and voltage generated in the receiving second winding were measured, and accordingly, the current of 0.115A and 3.85V was detected, and the power transmission efficiency was 63%.
[45]
[46] [Example 3]
[47] The same transmitting primary winding in the Example 1 was used as a transmitting primary winding of a current transmitting part of pad type. A rectangular circuit pattern, in which a number of winding turns was 16, and an outer diameter was 34mm, and a thickness (a thickness of circuit) was 0.75mm, and a distance between the patterns was 0.2mm, was formed on an upper part of a polyimide film of thickness of 10D, by using copper, and then were laminated with 6 layers to be used as a receiving second winding of a current receiving part of pad type. The current transmitting part and the current receiving part were contacted, and a current of 0.15 IA and 4.62V was applied to the transmitting primary winding, and then the current and voltage generated in the receiving second winding were measured, and accordingly, the current of 0.119A and 3.88V was detected, and the power transmission efficiency was 66%.
[48]
[49] [Comparative Example]
[50] The same transmitting primary winding in the Example 1 was used as a transmitting primary winding of a current transmitting part of pad type. A spiral circuit pattern, in which a number of winding turns was 16, and an outer diameter was 30mm, and a thickness (a thickness of circuit) was 0.54mm, and a distance between the patterns was 0.2mm, was formed on an upper part of a polyimide film of thickness of 1OD by using copper, and then the pattern was used without a lamination step as a receiving second winding of a current receiving part of pad type. The current transmitting part and the current receiving part were contacted, and a current of 0.15 IA and 4.62V was applied to the transmitting primary winding, and then the current and voltage generated in the receiving second winding were measured, and accordingly, the current of 0.072A and 3.10V was detected, and the power transmission efficiency was 32%.

Claims

Claims
[1] An induction coil which is formed such that more than two printed circuit boards, on which a prescribed circuit pattern is formed, are laminated, wherein first ends positioned on an outside of the circuit patterns are electrically connected by a first connection part penetrating the first ends, and second ends positioned on an inside of the circuit patterns are electrically connected by a second connection part penetrating the second ends.
[2] The induction coil according to the claim 1, wherein the circuit pattern has a spiral form, and a laminated layer number of the printed circuit board, on which the circuit pattern is formed, is 2 to 15, and a number of winding turns of the spiral circuit pattern is 5 to 50, and the most outer diameter of the spiral circuit pattern is 10 to 200 mm.
[3] The induction coil according to the claim 1, wherein the circuit pattern is selected from the group including a circular spiral circuit pattern and a rectangular spiral circuit pattern.
[4] The induction coil according to the claim 1, wherein in the printed circuit board, the circuit pattern is formed on an upper part of a substrate made of an insulation material by using a conductive material selected from the group including copper, aluminum, white gold, nickel, zinc, silver, gold, tin, and a conductive polymer.
[5] The induction coil according to the claim 4, wherein the circuit pattern is formed by more than one method selected from the group including a method of depositing by sputtering the conductive material on the substrate, a method of printing pastes including the conductive material on the substrate, and a method of forming the conductive material layer on the substrate and etching the conductive material layer in a prescribed shape.
[6] The induction coil according to the claim 4, wherein the printed circuit board is formed by a photo-etching method.
[7] The induction coil according to the claim 1, wherein the printed circuit board is a flexible copper clad laminate.
[8] The induction coil according to the claim 1, wherein the induction coil is used for data transfer.
[9] The induction coil according to the claim 8, wherein a connection part for data transfer, which is electrically connected to the circuit pattern, is further formed.
[10] A cordless charging apparatus which comprises a current transmitting part which is connected to a power supply, and includes a transmitting primary winding for transmitting a current generated from the power supply; and a current receiving part which receives the current with being induction-connected to the transmitting primary winding, and includes a receiving second winding for charging a battery with the current received, wherein at least one winding, which is selected from the group including the transmitting primary winding and the receiving second winding, is formed such that more than two printed circuit boards on which a prescribed circuit pattern is formed are laminated, and first ends positioned on an outside of the circuit patterns are electrically connected by a first connection part penetrating the first ends, and second ends positioned on an inside of the circuit patterns are electrically connected by a second connection part penetrating the second ends.
[11] The cordless charging apparatus according to the claim 10, wherein the current transmitting part has a structure of pad type, and the current receiving part is united together with the battery charged.
[12] The cordless charging apparatus according to the claim 10, wherein the first connection part is connected to a first terminal positioned on an upper part of the most top printed circuit board among the printed circuit boards, and a withdrawing line, which withdraws the second connection part connecting the second ends of the circuit patterns out of the winding, is formed on a back side of the most bottom printed circuit pattern of the winding, and the withdrawing line is connected to a third connection part penetrating the multiple printed circuit boards, and then is connected to a second terminal positioned on the upper part of the most top printed circuit board.
[13] The cordless charging apparatus according to the claim 12, wherein the withdrawing line is formed on a separate printed circuit board, and then is bonded on the back side of the most bottom printed circuit board, on which the second connection part and the third connection part are formed.
[14] The cordless charging apparatus according to the claim 10, wherein the cordless charging apparatus can carry out data transfer, and is used in an apparatus which need to be charged by more than one secondary cell and is selected from the group including a mobile phone, a MP3 player, a PDA, a notebook PC, a digital camera, a camcorder, mobile electronic games, a PMP(portable media player), a portable medical apparatus, a robot, a robot cleaner, a toy robot, a small motor vehicle, an automobile, an auto-vacuum cleaner, an auto shaver, an wireless keyboard, and a mouse.
[15] The cordless charging apparatus according to the claim 10, wherein the transmitting primary winding and the receiving second winding have a same shape.
PCT/KR2007/003731 2006-08-04 2007-08-02 Induction coil for cordless energy charging and data transfer WO2008016273A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2007800371461A CN101523693B (en) 2006-08-04 2007-08-02 Induction coil for cordless energy charging and data transfer
JP2009522721A JP2009545876A (en) 2006-08-04 2007-08-02 Induction coil for non-contact energy charging and data transmission

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20060073757 2006-08-04
KR10-2006-0073757 2006-08-04

Publications (1)

Publication Number Publication Date
WO2008016273A1 true WO2008016273A1 (en) 2008-02-07

Family

ID=38997409

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2007/003731 WO2008016273A1 (en) 2006-08-04 2007-08-02 Induction coil for cordless energy charging and data transfer

Country Status (4)

Country Link
JP (1) JP2009545876A (en)
KR (1) KR101390746B1 (en)
CN (1) CN101523693B (en)
WO (1) WO2008016273A1 (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD611899S1 (en) 2009-07-31 2010-03-16 Lin Wei Yang Induction charger
USD611900S1 (en) 2009-07-31 2010-03-16 Lin Wei Yang Induction charger
USD611898S1 (en) 2009-07-17 2010-03-16 Lin Wei Yang Induction charger
WO2011026283A1 (en) * 2009-09-02 2011-03-10 北京华旗资讯数码科技有限公司 Wireless rechargeable battery and wireless charger
CN102005783A (en) * 2009-09-02 2011-04-06 北京华旗资讯数码科技有限公司 Wireless charging device
WO2013107620A1 (en) * 2012-01-19 2013-07-25 Sew-Eurodrive Gmbh & Co. Kg Coil arrangement for a system for inductive energy transmission
CN103904756A (en) * 2012-12-27 2014-07-02 苏州宝时得电动工具有限公司 Wireless charging switching device and wireless charging device
EP2750145A1 (en) * 2012-12-28 2014-07-02 Samsung Electro-Mechanics Co., Ltd Coil for cordless charging and cordless charging apparatus using the same
EP2581921A3 (en) * 2011-10-14 2015-04-22 LG Innotek Co., Ltd. Wireless power transmitter
EP2980949A1 (en) * 2014-08-01 2016-02-03 J Touch Corporation Thin-film coil component and charging apparatus and method for manufacturing the component
WO2017036995A1 (en) * 2015-09-03 2017-03-09 Koninklijke Philips N.V. Stackable connector and device for wireless transmission of power
US9776071B2 (en) 2013-05-09 2017-10-03 Mattel, Inc. Resonant coils for use with games and toys
US9843216B2 (en) 2013-05-13 2017-12-12 Nitto Denko Corporation Coil printed circuit board, power reception module, battery unit and power reception communication module
US9997950B2 (en) 2013-06-20 2018-06-12 Lg Innotek Co., Ltd. Receiving antenna and wireless power receiving device including the same
EP3629444A1 (en) * 2018-09-26 2020-04-01 Yazaki Corporation Power transmission unit
USRE49300E1 (en) 2008-12-12 2022-11-15 Ge Hybrid Technologies, Llc Non-contact charging station with power transmission planar spiral core, non-contact power-receiving apparatus, and method for controlling the same

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100877646B1 (en) * 2007-03-05 2009-01-09 엘에스전선 주식회사 Wireless charger having multiple coil pad and Battery charging set having the same
EP3065257B1 (en) 2008-12-12 2020-02-12 Intel Corporation Non-contact power transmission apparatus
KR100915842B1 (en) * 2008-12-22 2009-09-07 정춘길 Non-contact charging station of wireless power transmision with pt-lw core having planar spiral core structure and control method thereof
US9130395B2 (en) 2008-12-12 2015-09-08 Hanrim Postech Co., Ltd. Non-contact charging station with planar spiral power transmission coil and method for controlling the same
KR100928439B1 (en) * 2008-12-12 2009-11-24 정춘길 Non-contact charging station of wireless power transmision with pt-pcb core having planar spiral core structure
US11476566B2 (en) 2009-03-09 2022-10-18 Nucurrent, Inc. Multi-layer-multi-turn structure for high efficiency wireless communication
US9040947B2 (en) * 2009-11-16 2015-05-26 300K Enterprises Pty Ltd Contactless coupling and method for use with an electrical appliance
JP2011151891A (en) * 2010-01-19 2011-08-04 Sony Corp Method and apparatus for charging secondary battery
KR101395256B1 (en) * 2010-07-23 2014-05-16 한국전자통신연구원 Wireless energy transfer apparatus and making method therefor
CN102463901A (en) * 2010-11-10 2012-05-23 孙善骏 Electromagnetic charging power-assisted electric automobile
JP5654367B2 (en) 2011-01-28 2015-01-14 パナソニックＩｐマネジメント株式会社 Power supply module of non-contact power supply device, method of using power supply module of non-contact power supply device, and method of manufacturing power supply module of non-contact power supply device
KR101255953B1 (en) 2011-09-27 2013-04-23 삼성전기주식회사 Manufacturing Method of Stacked Resonant Coil
KR101356623B1 (en) * 2011-11-10 2014-02-03 주식회사 스파콘 Power transmission coil and wireless power transmission apparatus
US9391463B2 (en) 2011-12-22 2016-07-12 Hanrim Postech Co., Ltd. Device and method for wirelessly transmitting power
CN103368215B (en) * 2012-03-31 2017-02-22 深圳光启创新技术有限公司 Wireless charging device based on magnetic induction
KR101305790B1 (en) * 2012-04-18 2013-09-06 엘지이노텍 주식회사 Apparatus for transmitting wireless power and apparatus for receiving wireless power
KR101372088B1 (en) * 2012-07-19 2014-03-07 엘지이노텍 주식회사 Coil and apparatus for transmitting wireless power
KR101257707B1 (en) * 2012-09-13 2013-04-24 (주)광진텔레콤 Transmit / receive wireless charger pattern structure and a method of manufacturing the same
CN104037494B (en) * 2013-03-08 2019-07-05 纽卡润特有限公司 Multilayer pin configuration for efficient wireless communication
JP2015019022A (en) * 2013-07-12 2015-01-29 東芝テック株式会社 Power transmission device and coil device
CN104184217B (en) * 2013-08-21 2016-08-10 深圳市安普盛科技有限公司 Induction coil and manufacture method, wireless charging system for wireless power transmission
CN103618389A (en) * 2013-09-06 2014-03-05 谢伦卫 In-mould injection electromagnetic resonance wireless charging receiving device and electromagnetic resonance wireless charging electric appliance
CN103490482B (en) * 2013-10-15 2016-08-24 络派模切（北京）有限公司 A kind of wireless charging module for electronic equipment and manufacture method thereof
CN103714953A (en) * 2013-12-24 2014-04-09 南京师范大学 Wireless charging coil
US9449754B2 (en) 2014-05-30 2016-09-20 Apple Inc. Coil constructions for improved inductive energy transfer
CN105655114A (en) * 2014-11-12 2016-06-08 介面光电股份有限公司 Film coil element and manufacturing method thereof, and charging device element having same
CN104393689A (en) * 2014-12-10 2015-03-04 浙江大学 Wireless charger and charging method of notebook computer
DE102015102643A1 (en) * 2015-02-24 2016-08-25 Backes & Müller High End Audio Produktionsgesellschaft mbH Sensor for detecting a movement of a loudspeaker diaphragm
KR102398958B1 (en) * 2015-04-27 2022-05-17 삼성전자주식회사 Wireless power transfer device
KR101807604B1 (en) 2015-05-28 2017-12-11 주식회사 아모센스 Antenna unit for wireless power transfer and Wireless power transmission module having the same
KR101692510B1 (en) * 2015-06-16 2017-01-03 엘지이노텍 주식회사 Wireless charger for durability improvement
WO2017047498A1 (en) * 2015-09-18 2017-03-23 住友電工プリントサーキット株式会社 Flexible printed wiring board and contactless charging system
CN107731495A (en) * 2016-08-10 2018-02-23 三星电机株式会社 Coil module
KR20180084307A (en) * 2017-01-16 2018-07-25 엘지이노텍 주식회사 Coil Device Of Apparatus For Transmitting And Receiving Wireless Power
US20180268989A1 (en) * 2017-03-16 2018-09-20 Shenzhen Yichong Wireless Power Technology Co. Ltd. Power receiver coil in wireless charging system
CN107025990B (en) * 2017-04-18 2018-12-25 上海激光电源设备有限责任公司 Optical-fiber laser power supply high-power density transformer
JP2018121066A (en) * 2018-03-08 2018-08-02 日東電工株式会社 Coil printed wiring board, power receiving module, battery unit, and power receiving communication module
KR102004943B1 (en) 2018-04-20 2019-07-29 엘지이노텍 주식회사 Receiving antennas and wireless power receiving apparatus comprising the same
TWI706424B (en) * 2018-06-27 2020-10-01 合利億股份有限公司 Wireless charging coil
JP2020027813A (en) * 2018-08-09 2020-02-20 矢崎総業株式会社 Power transmission unit
CN109461981B (en) * 2018-10-23 2020-08-04 深圳市爱迪芯科技有限公司 Wireless charging type rechargeable battery
CN109818424A (en) * 2019-01-14 2019-05-28 华南理工大学 A kind of Stacked coil for wireless energy transfer
JP7342424B2 (en) * 2019-05-30 2023-09-12 Tdk株式会社 Coil parts and non-contact power transmission equipment equipped with the same
KR102110400B1 (en) 2019-07-22 2020-05-13 엘지이노텍 주식회사 Receiving antennas and wireless power receiving apparatus comprising the same
KR102633300B1 (en) * 2022-01-24 2024-02-05 주식회사 노바텍 Built-in wireless charging module having overlapped coil layers

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020035242A (en) * 2000-11-06 2002-05-11 조규형 Charger for use in a portable device
KR20030072999A (en) * 2002-03-08 2003-09-19 이강용 The Non Contact Charge System of Variable Chargeable Battery
KR20040096353A (en) * 2003-05-09 2004-11-16 현대자동차주식회사 Apparatus for driving electric devices of a tail gate using wireless electric charging circuit
KR20050016879A (en) * 2002-05-13 2005-02-21 스플래쉬파워 리미티드 Improvements relating to contact-less power transfer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61104518A (en) * 1984-10-25 1986-05-22 松下電工株式会社 Contact terminal unit of relay and manufacture thereof
JPS6387808A (en) * 1986-09-30 1988-04-19 Nec Corp Chirp signal generating circuit
JPH03248407A (en) * 1990-02-26 1991-11-06 Hitachi Ferrite Ltd Coaxial type rotary transformer and its manufacture
JP2000182863A (en) * 1998-12-11 2000-06-30 Tsubakimoto Chain Co Noncontact feeder
JP4106673B2 (en) * 1999-03-05 2008-06-25 株式会社エフ・イー・シー Antenna device using coil unit, printed circuit board
JP4036813B2 (en) * 2003-09-30 2008-01-23 シャープ株式会社 Non-contact power supply system
KR200357251Y1 (en) * 2004-05-07 2004-07-27 황인갑 Noncontacting type charging system using printed circuit board pattern and battery pack used therein

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020035242A (en) * 2000-11-06 2002-05-11 조규형 Charger for use in a portable device
KR20030072999A (en) * 2002-03-08 2003-09-19 이강용 The Non Contact Charge System of Variable Chargeable Battery
KR20050016879A (en) * 2002-05-13 2005-02-21 스플래쉬파워 리미티드 Improvements relating to contact-less power transfer
KR20040096353A (en) * 2003-05-09 2004-11-16 현대자동차주식회사 Apparatus for driving electric devices of a tail gate using wireless electric charging circuit

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE49300E1 (en) 2008-12-12 2022-11-15 Ge Hybrid Technologies, Llc Non-contact charging station with power transmission planar spiral core, non-contact power-receiving apparatus, and method for controlling the same
USD611898S1 (en) 2009-07-17 2010-03-16 Lin Wei Yang Induction charger
USD611900S1 (en) 2009-07-31 2010-03-16 Lin Wei Yang Induction charger
USD611899S1 (en) 2009-07-31 2010-03-16 Lin Wei Yang Induction charger
WO2011026283A1 (en) * 2009-09-02 2011-03-10 北京华旗资讯数码科技有限公司 Wireless rechargeable battery and wireless charger
CN102005783A (en) * 2009-09-02 2011-04-06 北京华旗资讯数码科技有限公司 Wireless charging device
EP2581921A3 (en) * 2011-10-14 2015-04-22 LG Innotek Co., Ltd. Wireless power transmitter
US9300366B2 (en) 2011-10-14 2016-03-29 Lg Innotek Co., Ltd. Wireless power transmitter
US9923388B2 (en) 2011-10-14 2018-03-20 Lg Innotek Co., Ltd. Wireless power transmitter
WO2013107620A1 (en) * 2012-01-19 2013-07-25 Sew-Eurodrive Gmbh & Co. Kg Coil arrangement for a system for inductive energy transmission
CN103904756A (en) * 2012-12-27 2014-07-02 苏州宝时得电动工具有限公司 Wireless charging switching device and wireless charging device
EP2750145A1 (en) * 2012-12-28 2014-07-02 Samsung Electro-Mechanics Co., Ltd Coil for cordless charging and cordless charging apparatus using the same
US9355766B2 (en) 2012-12-28 2016-05-31 Samsung Electro-Mechanics Co., Ltd. Coil for cordless charging and cordless charging apparatus using the same
US10413807B2 (en) 2013-05-09 2019-09-17 Mattel, Inc. Resonant coils for use with games and toys
US10994191B2 (en) 2013-05-09 2021-05-04 Mattel, Inc. Resonant coils for use with games and toys
US9776071B2 (en) 2013-05-09 2017-10-03 Mattel, Inc. Resonant coils for use with games and toys
US9843216B2 (en) 2013-05-13 2017-12-12 Nitto Denko Corporation Coil printed circuit board, power reception module, battery unit and power reception communication module
US9997950B2 (en) 2013-06-20 2018-06-12 Lg Innotek Co., Ltd. Receiving antenna and wireless power receiving device including the same
US10333358B2 (en) 2013-06-20 2019-06-25 Lg Innotek Co., Ltd. Receiving antenna and wireless power receiving device including the same
EP2980949A1 (en) * 2014-08-01 2016-02-03 J Touch Corporation Thin-film coil component and charging apparatus and method for manufacturing the component
CN108140477A (en) * 2015-09-03 2018-06-08 皇家飞利浦有限公司 For the stackable connector and device of electric power wireless transmission
US10623061B2 (en) 2015-09-03 2020-04-14 Koninklijke Philips N.V. Stackable connector and device for wireless transmission of power
CN108140477B (en) * 2015-09-03 2020-05-19 皇家飞利浦有限公司 Stackable connector and apparatus for wireless transmission of power
WO2017036995A1 (en) * 2015-09-03 2017-03-09 Koninklijke Philips N.V. Stackable connector and device for wireless transmission of power
EP3629444A1 (en) * 2018-09-26 2020-04-01 Yazaki Corporation Power transmission unit
CN110957117A (en) * 2018-09-26 2020-04-03 矢崎总业株式会社 Power transmission unit
US10930431B2 (en) 2018-09-26 2021-02-23 Yazaki Corporation Power transmission unit
CN110957117B (en) * 2018-09-26 2022-09-23 矢崎总业株式会社 Power transmission unit

Also Published As

Publication number Publication date
JP2009545876A (en) 2009-12-24
KR101390746B1 (en) 2014-05-02
KR20080012782A (en) 2008-02-12
CN101523693B (en) 2012-05-23
CN101523693A (en) 2009-09-02

Similar Documents

Publication Publication Date Title
WO2008016273A1 (en) Induction coil for cordless energy charging and data transfer
KR101890326B1 (en) Wireless power transfer module and portable auxiliary battery including the same
US7456606B1 (en) Battery label with wireless battery charging circuit
CN208796795U (en) Coil block
WO2013172349A1 (en) Antenna sheet for contactless charging device and charging device using said sheet
EP2750145B1 (en) Coil for cordless charging and cordless charging apparatus using the same
US8188826B2 (en) Coil unit and electronic apparatus using the same
CN101233664B (en) Wireless charger decreased in variation of charging efficiency
CN104184217B (en) Induction coil and manufacture method, wireless charging system for wireless power transmission
CN106898474B (en) Coil block
EP2869315B1 (en) Wireless power relay apparatus and case including the same
CN101681719A (en) Non-contact power transmitting device and method for fabricating its secondary side
US20140265612A1 (en) Thin film coil, shield part including the same, and contactless power transmission device having the shield part
EP2475072A1 (en) Wireless charging device
CN107731486A (en) Coil block
CN103366931A (en) Thin film coil and electronic device having the same
CN105576715A (en) Power transmission device, vehicle equipped with power transmission device, and wireless power transmission system
JP2019212912A (en) Multiple coil for transmitting power wirelessly
US20090267721A1 (en) Coil unit and electronic apparatus using the same
CN105576847A (en) Power transmission device, vehicle equipped with power transmission device, and wireless power transmission system
US20190252768A1 (en) Antenna module and electronic device having the same
KR20140067185A (en) Mobile communication apparatus comprising near field communication circuit part and wireless charging circuit part
CN210575497U (en) Ferromagnetic shielding structure and wireless charging equipment
CN212849958U (en) Wireless charging coil and wireless charging device
WO2023222205A1 (en) Wireless power receiver arrangement with planar inductor arrangement and reconfigurable switching network

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200780037146.1

Country of ref document: CN

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

Ref document number: 07807940

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: RU

122 Ep: pct application non-entry in european phase

Ref document number: 07807940

Country of ref document: EP

Kind code of ref document: A1