WO2012073427A1 - 非接触充電モジュール及び非接触充電機器 - Google Patents
非接触充電モジュール及び非接触充電機器 Download PDFInfo
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- WO2012073427A1 WO2012073427A1 PCT/JP2011/006025 JP2011006025W WO2012073427A1 WO 2012073427 A1 WO2012073427 A1 WO 2012073427A1 JP 2011006025 W JP2011006025 W JP 2011006025W WO 2012073427 A1 WO2012073427 A1 WO 2012073427A1
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- coil
- wound
- charging module
- contact charging
- planar coil
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- 239000004020 conductor Substances 0.000 claims description 25
- 230000005540 biological transmission Effects 0.000 abstract description 28
- 239000002356 single layer Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 15
- 238000004804 winding Methods 0.000 description 9
- 229910000859 α-Fe Inorganic materials 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000005674 electromagnetic induction Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000005300 metallic glass Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910018605 Ni—Zn Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 230000001105 regulatory effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
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- H04B5/263—
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- H04B5/72—
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- H04B5/79—
Definitions
- the present invention relates to a non-contact charging module having a planar coil portion made of a spiral conductive wire and a magnetic sheet, and a non-contact charging device using the same.
- a power transmission coil is arranged on the charger side
- a power reception coil is arranged on the main device side
- electromagnetic induction is generated between the two coils to transmit power from the charger side to the main device side. It has also been proposed to apply a mobile terminal device or the like as the main device.
- the main device such as the portable terminal device and the charger are required to be thin and small.
- a planar coil portion as a power transmission coil or a power reception coil and a magnetic sheet as in Patent Document 1.
- a planar coil portion as a power transmission coil or a power reception coil and a magnetic sheet as in Patent Document 1.
- a planar coil in order to reduce the increase in effective resistance in the high frequency region, as in Patent Document 2, in a planar coil, a plurality of conductive wires parallel to each other are arranged in a plane and wound in a spiral shape, There is one in which the ends are electrically connected by a coil lead-out portion.
- An object of the present invention is to provide a non-contact charging module and a non-contact charging device capable of reducing the thickness of the non-contact charging module in a state in which the cross-sectional area of the planar coil portion is sufficiently secured and the power transmission efficiency is improved. It is to be.
- the non-contact charging module of the present invention has a planar coil portion around which a plurality of conducting wires are wound and a coil surface of the planar coil portion, and is provided so as to face the coil surface of the planar coil portion.
- a plurality of conductive wires connected to each other at both ends thereof, and the planar coil portion is wound with a first portion stacked in a plurality of stages, other than the first portion.
- the second portion is wound with a number of steps smaller than the number of steps wound on the first portion, and the magnetic sheet is wound on the first portion that is wound on the plurality of steps of the planar coil portion.
- An annular recess or slit that thins the magnetic sheet is provided in the facing portion, and the plurality of conducting wires are accommodated in the annular recess.
- the non-contact charging module can be reduced in size and thickness in a state where the cross-sectional area of the planar coil portion is sufficiently secured and the power transmission efficiency is improved.
- the conceptual diagram of the magnetic sheet of the non-contact charging module whose coil of the non-contact charging module which concerns on the said embodiment is a 1 step
- the conceptual diagram of the magnetic sheet of the non-contact charging module whose coil of the non-contact charging module which concerns on the said embodiment is a 1 step
- FIG. 1 is an assembly diagram of a contactless charging module according to an embodiment of the present invention.
- FIG. 2 is a conceptual diagram of the non-contact charging module according to the present embodiment, FIG. 2 (a) is a top view, FIG. 2 (b) is a cross-sectional view as seen from the A direction of FIG. 2 (c) and (d) are cross-sectional views seen from the B direction in FIG. 2 (a).
- FIG. 3 is a conceptual diagram showing how to wind the coil of the non-contact charging module according to the present embodiment.
- FIG. 4 is a conceptual diagram of the magnetic sheet of the non-contact charging module according to the present embodiment, FIG. 4 (a) is a top view, and FIG. 4 (b) is a cross section viewed from the A direction of FIG. 4 (a).
- FIGS. 4 (c) and 4 (d) are cross-sectional views seen from the direction B of FIG. 4 (a).
- FIG. 5 is a top view of the magnetic sheet of the contactless charging module according to
- the contactless charging module 1 of the present invention includes a planar coil portion 2 in which a plurality of conductive wires are wound in a spiral shape, and a magnetic sheet 3 provided so as to face the surface of the coil 21 of the planar coil portion 2.
- the plurality of conductive wires are connected to each other at both ends thereof, and the planar coil portion 2 is wound with a part thereof being stacked in a plurality of stages and the other part being wound in a single stage. It is a non-contact charging module.
- the planar coil unit 2 includes a coil 21 in which a conductor is wound in a radial direction so as to draw a vortex on the surface, and terminals 22 and 23 provided at both ends of the coil 21. .
- the coil 21 is obtained by winding two conductive wires in parallel on a plane, and a surface formed by the coil is called a coil surface. Further, since the two conductors are electrically connected by solder or the like at the terminals 22 and 23, the two conductors become one thick conductor. That is, the two conducting wires are planar and are wound around the same center, and one conducting wire is sandwiched between the other conducting wires in the radial direction.
- the cross-sectional area of a conducting wire having a diameter of 0.25 mm can be obtained by preparing two conducting wires having a diameter of 0.18 mm. Therefore, if the diameter of one conducting wire is 0.25 mm, the thickness of one turn of the coil 21 is 0.25 mm, the radial width of the coil 21 is 0.25 mm, but the conducting wire 2 having a diameter of 0.18 mm. In the case of a book, the thickness of one turn of the coil 21 is 0.18 mm, and the width in the radial direction is 0.36 mm. In addition, the thickness direction is a stacking direction of the planar coil portion 2 and the magnetic sheet 3.
- the coil 21 is overlapped in two stages in the thickness direction only in a part on the center side, and the remaining outer part is one stage. At this time, a part of the coil 21 on the center side is wound so as to overlap as shown in FIG. 3 (a) or FIG. 3 (b). As shown in FIG. 3 (a), the upper conductor and the lower conductor are wound so as to leave a space between each other, thereby reducing the stray capacitance between the upper conductor and the lower conductor, and the coil 21.
- the AC resistance can be kept small.
- the upper conductor and the lower conductor are wound so as to close each other, so that the thickness of the coil 21 can be suppressed.
- the cross-sectional area is a circular conducting wire, but a conducting wire having a rectangular shape or the like may be used.
- a gap is formed between adjacent conductors, so that the stray capacitance between the conductors is reduced, and the AC resistance of the coil 21 is reduced. Can do.
- the coil 21 is wound in one stage rather than being wound in two stages in the thickness direction, and the alternating current resistance of the coil 21 is lowered, and the transmission efficiency can be increased. This is because when a conducting wire is wound in two stages, stray capacitance is generated between the upper conducting wire and the lower conducting wire. Therefore, it is better to wind as many portions as possible in one stage rather than winding the entire coil 21 in two stages. Moreover, it can reduce in thickness as the non-contact charge module 1 by winding in 1 step
- the inner diameter x inside the coil 21 shown in FIG. 1 is 10 mm to 20 mm, and the outer diameter is about 30 mm. As the inner diameter x is smaller, the number of turns of the coil 21 can be increased in the contactless charging module 1 of the same size, and the L value can be improved.
- the terminals 22 and 23 may be close to each other or may be disposed apart from each other, the contactless charging module 1 is easier to mount if they are disposed apart.
- the magnetic sheet 3 is provided in order to improve the power transmission efficiency of the non-contact charging using the electromagnetic induction action.
- the recess 33 may be a slit 34.
- a Ni—Zn ferrite sheet, a Mn—Zn ferrite sheet, a Mg—Zn ferrite sheet, or the like can be used as the magnetic sheet 3.
- the ferrite sheet can reduce the AC resistance of the coil 21 as compared with the amorphous metal magnetic sheet.
- the center convex part 32 is not necessarily required.
- the magnetic sheet 3 is approximately 33 mm ⁇ 33 mm.
- the thicknesses of the flat portion 31, the convex portion 32, and the concave portion 33 are set so that d1 shown in FIG. 4B is 0.2 mm, d2 is 0.2 mm, and d3 is 0.4 mm.
- the power transmission efficiency of the contactless charging module is improved. Therefore, the larger the height d1 of the convex portion 32 is, the higher the transmission efficiency of the contactless charging module 1 is.
- the thickness of the non-contact charging module 1 increases by an amount corresponding to the convex portion 32 being made larger than the diameter of the conducting wire, the diameter of the conducting wire constituting the coil 21 is made substantially the same.
- the diameter of the convex portion 32 is substantially the same as the inner diameter of the coil 21. That is, the center of the axis of the coil 21 and the center of the convex part 32 substantially coincide, and the coil 21 is wound around the convex part 32.
- d2 is also substantially the same as the diameter of the conducting wire constituting the coil 21, and the concave portion 33 is formed only with a minimum depth. This is because the magnetic sheet 3 becomes thinner as the concave portion 33 becomes deeper, so that the transmission efficiency of the non-contact charging module 1 is lowered.
- the concave portion 33 includes a circular portion 33 a formed so as to surround the convex portion 32 and a linear portion 33 b extending from the circular portion 33 a to the end of the magnetic sheet 3.
- the width of the circular portion 33a is about 1 mm to 2 mm
- the width of the straight portion 33b is about 0.4 mm to 1 mm (conducting wire diameter + about 0.1 mm).
- the straight portion 33b is substantially perpendicular to the end portion of the magnetic sheet 3, and is formed so as to overlap the tangent line on the outer periphery of the circular portion.
- the length of the straight portion 33b is about 15 mm to 20 mm.
- the straight portion 33b may be formed at a portion where the end of the magnetic sheet 3 and the outer periphery of the circular portion 33a are closest to each other. Thereby, the formation area of the recessed part 33 can be suppressed to the minimum, and the transmission efficiency of the non-contact charge module 1 can be improved.
- the length of the straight portion 33b is about 5 mm to 10 mm. In either arrangement, the inner end portion of the straight portion 33b is connected to the circular portion 33a. Moreover, you may make the linear part 33b other arrangement
- all the turns in the radial direction of the coil 21 have a one-stage structure, or a part has a one-stage structure and the other part has a two-stage structure. It is possible to do. Accordingly, one of the terminals 22 and 23 can be pulled out from the outer periphery of the coil 21, but the other must be pulled out from the inside. Accordingly, the portion around which the coil 21 is wound and the portion from the end of winding of the coil 21 to the terminal 22 or 23 always overlap in the thickness direction. Therefore, the straight portion 33b may be provided in the overlapping portion.
- the straight portion 33b may be a recess 33 as shown in FIG. 4C, or may be a slit 34 as shown in FIG. 4D. That is, if it is the recessed part 33, since a through-hole and a slit are not provided in the magnetic sheet 3, it can prevent that a magnetic flux leaks and can improve the electric power transmission efficiency of the non-contact charge module 1.
- FIG. 4 (c) the recessed part 33 whose cross-sectional shape becomes a square shape, It may be circular arc shape or roundish.
- d1, d2, the width of the circular portion 33a, and the like depend on the diameter of the conducting wire, and are not limited to the above values. Moreover, d1 and d2 do not necessarily need to be the same. This is because the coil may be wound in three or more stages in the circular portion 33a.
- FIG. 6 is a diagram showing the relationship between the thickness of the ferrite sheet and the L value of the coil 21 of the non-contact charging module according to the present embodiment.
- the thickness of the ferrite sheet referred to here is the sum of d2 and d3 in FIG. 4B, and the protrusion 32 is not relevant. Therefore, in this embodiment, the thickness of the ferrite sheet is 0.6 mm.
- the number of turns of the coil 21 is 30 turns, and the inner diameter of the coil 21 is 10 mm.
- the L value of the coil 21 exceeds 34 ⁇ H at about 0.6 mm.
- the WPC standard which is the standard for the non-contact charging module 1, can be satisfied.
- the whole thickness of the non-contact charging module 1 will increase if it is 0.6 mm or more thick, it is set to 0.6 mm in this embodiment.
- the optimum value when the thickness is 0.6 mm is because the above-described ferrite sheet is used. When an amorphous metal magnetic sheet is used, the value is different.
- FIG. 7 is a diagram showing the relationship between the inner diameter and the L value of the coil 21 of the contactless charging module in the embodiment of the present invention
- FIG. 8 shows the number of turns of the coil 21 of the contactless charging module in the embodiment of the present invention. It is a figure which shows the relationship with L value.
- the number of turns of the coil 21 is 30 turns
- the inner diameter of the coil 21 is 10 mm.
- the L value of the coil 21 As the L value of the coil 21 is higher, the transmission efficiency of the non-contact charging module 1 is improved. In order to satisfy the WPC standard described above, the L value needs to be about 30 ⁇ H. Therefore, as apparent from FIGS. 7 and 8, the coil 21 needs to have at least about 30 turns and the coil 21 has an inner diameter of at least about 10 mm. However, since the thickness and size of the non-contact charging module 1 are regulated by, for example, the size of the battery pack of the mobile phone on which the non-contact charging module 1 is mounted, it is necessary to reduce the size and thickness.
- two conductors are electrically connected at the terminals 22 and 23 so that one conductor having a large diameter is obtained, and the thinning is realized while ensuring the same cross-sectional area of the conductor.
- the width of the coil 21 in the radial direction is larger than that of one conductor by using two conductors, only a part of the innermost part has a two-stage structure. Thereby, even if it is the magnetic sheet 3 of a limited magnitude
- the area of the recess 33 can be minimized by setting the two-stage structure to the inside, the power transmission efficiency of the non-contact charging module 1 can be maintained.
- the two-stage structure as an inner side and as many portions of the coil 21 as possible as a single-stage structure, the AC resistance can be suppressed low and the L value can be increased.
- an annular recess 33 for thinning the magnetic sheet 3 in a portion of the magnetic sheet that faces the portion of the planar coil portion 2 that is wound on the plurality of steps of the planar coil portion 2 a plurality of steps of the coil are provided. It is possible to offset the difference in thickness between the portion overlapped with the one-step portion and the one-step portion, thereby further reducing the thickness.
- convex portions 31 a may be formed at the four corners of the magnetic sheet 3 in the region where the coil 21 on the flat portion 31 is not disposed. That is, nothing is placed on the magnetic sheet 3 at the four corners of the magnetic sheet 3 and outside the outer periphery of the coil 2 on the flat portion 31. Therefore, by forming the convex portion 31a there, the thickness of the magnetic sheet 3 can be increased, and the power transmission efficiency of the non-contact charging module can be improved.
- the thickness of the convex portion 31a is preferably as thick as possible, but for the purpose of thinning, the thickness of the conductive wire is made substantially the same as that of the central convex portion 32.
- the coil 21 is not limited to being annularly wound, and may be wound in a square shape or a polygonal shape.
- the inner side has a three-stage structure
- the outer side has a two-stage structure
- the inner side is wound in multiple stages
- the outer side is wound with a number of stages smaller than the number of stages wound on the inner side. An effect can be obtained.
- the convex portion 32, the concave portion 33, and the slit 34 when the circular portion 33a is not provided will be described in detail. 9 to 11, it is assumed that the coil 21 is formed by winding one conductive wire, but the present embodiment is not limited to this.
- FIG. 9 is a conceptual diagram of a non-contact charging module having a one-stage coil structure according to the present embodiment, where (a) is a top view and (b) is a cross-sectional view as viewed from the direction A in FIG. 9 (a). (C) And (d) is sectional drawing seen from the B direction of Fig.9 (a).
- FIG. 10 is a conceptual diagram of a magnetic sheet of a non-contact charging module having a one-stage coil structure in this embodiment, where (a) is a top view and (b) is a cross section viewed from the direction A in FIG. 10 (a).
- FIGS. 10C and 10D are cross-sectional views seen from the direction B in FIG. FIG.
- FIG. 11 is a conceptual diagram of a magnetic sheet of a non-contact charging module having a one-stage coil structure in this example, where (a) is a top view and (b) is viewed from the A direction in FIG. 11 (a). It is sectional drawing. 9 to 11 are not provided with the circular portion 33a, and the coil 21 is also formed of a single copper wire.
- the coil 21 has a one-stage structure as much as possible. In that case, all the turns in the radial direction of the coil have a one-stage structure, or one part has a one-stage structure and the other part has a two-stage structure. It can be considered. Therefore, one of the terminals 22 and 23 can be pulled out from the outer periphery of the coil 21, but the other must be pulled out from the inside. Accordingly, the portion around which the coil 21 is wound and the portion from the end of winding of the coil 21 to the terminal 22 or 23 always overlap in the thickness direction.
- the concave portion 33 or the slit 34 is provided linearly in the overlapping portion.
- FIG. 10 is a straight line extending in the shortest distance from the winding start point or the winding end point of the coil surface to the end of the magnetic sheet 3, which is parallel to the circumference of the inner circumference of the coil 21 surface.
- a recess 33 or a slit 34 is provided.
- the terminal 23 can be formed on the magnetic sheet 3 without bending the conducting wire.
- the straight portion 33b is perpendicular to the tangent to the circumference of the inner circumference of the coil 21 surface as shown in FIG. It can also be formed as a recess 33 extending at the shortest distance to the end of the magnetic sheet 3.
- FIG. 11A discloses only the recess 33, it may be formed by a slit 34 as disclosed in FIG. 10D. Thereby, the formation area of the recessed part 33 or the slit 34 can be suppressed to the minimum, and the transmission efficiency of the non-contact charging module 1 can be improved. That is, by providing the concave portion 33 or the slit 34, a part of the magnetic sheet 3 is missing or thinned.
- the length of the straight portion 33b is about 5 mm to 10 mm.
- the concave portion 33 extends from the tangent line on the outer periphery of the convex portion 32 and extends to the end portion of the magnetic sheet 3 so that the length thereof is the shortest distance, and thus is parallel to the end portion of the magnetic sheet 3. This is because the magnetic sheet 3 is square or rectangular.
- the recess 33 has a rectangular shape when viewed from above, but is not limited thereto. In other words, it is more preferable that the inner end is rounded or polygonal so that the conductor can be easily inserted.
- the magnetic sheet 3 of this example is square.
- the shape of the magnetic sheet 3 is not limited to a square, and various shapes such as a circle and a polygon can be considered. Therefore, for example, the shape of the magnetic sheet 3 is polygonal, and the concave portion 33 or the slit 34 is perpendicular to the side against which one end of the concave portion 33 or the slit 34 abuts. The area of 33 or the slit 34 can be minimized.
- the shape of the magnetic sheet 3 is square, parallel to one pair of opposing end sides of the magnetic sheet 3 and perpendicular to the other pair of opposing end sides, In the rectangular magnetic sheet that is easy to use, the area of the recess 33 or the slit 34 can be minimized.
- the non-contact power transmission device includes a charger including a power transmission coil and a magnetic sheet, and a main device including a power receiving coil and a magnetic sheet.
- the main device is an electronic device such as a mobile phone.
- the circuit on the charger side includes a rectifying / smoothing circuit unit, a voltage conversion circuit unit, an oscillation circuit unit, a display circuit unit, a control circuit unit, and the power transmission coil.
- the circuit on the main device side includes the power receiving coil, a rectifier circuit unit, a control circuit unit, and a load L mainly composed of a secondary battery.
- the power transmission from the charger to the main device is performed using an electromagnetic induction action between the power transmission coil of the charger on the primary side and the power receiving coil of the main device on the secondary side.
- the non-contact charging device includes the non-contact charging module described above, the non-contact charging device in a state where the cross-sectional area of the planar coil portion is sufficiently secured to improve the power transmission efficiency. Can be reduced in size and thickness.
- the contactless charging module of the present invention can be reduced in size and thickness in a state in which the cross-sectional area of the planar coil portion is sufficiently secured and the power transmission efficiency is improved. It is useful for electronic devices that are portable, and is useful as a non-contact charging module for various electronic devices such as portable terminals such as mobile phones, portable audios, portable computers, digital cameras, and video cameras.
Abstract
Description
以下、本発明の実施の形態について図面を参照して詳細に説明する。
2 平面コイル部
21 コイル
22、23 端子
3 磁性シート
31 平坦部
32 凸部
33 凹部
34 スリット
Claims (9)
- 複数の導線が巻回された平面コイル部と、
前記平面コイル部のコイル面を載置し、前記平面コイル部のコイル面に対向するように設けられた磁性シートと、を備え、
前記複数の導線は、お互いにその両端でそれぞれ接続しており、
前記平面コイル部は、第1の部分を複数段に重ねて巻回しており、前記第1の部分以外の第2の部分を前記第1の部分で巻回した段数よりも少ない段数で巻回し、
前記磁性シートは、前記平面コイル部の複数段に重ねて巻回されている前記第1の部分に対向する部分に、前記磁性シートを薄くするような環状の凹部またはスリットを備え、前記環状の凹部の内部に前記複数の導線を収納する、非接触充電モジュール。 - 前記第1の部分は前記平面コイル部の内側部であり、前記第2の部分は前記平面コイル部の残りの外側部である、請求項1記載の非接触充電モジュール。
- 前記平面コイル部の前記第2の部分で巻回される段数は一段である、請求項1記載の非接触充電モジュール。
- 前記平面コイル部は、その内側を複数段に重ねて巻回しており、残りの外側を一段で巻回した、請求項2記載の非接触充電モジュール。
- 前記平面コイル部の複数段に重ねて巻回した部分は、一段で巻回した部分よりも面積が小さい、請求項3記載の非接触充電モジュール。
- 前記平面コイル部の内側部は二段に重ねて巻回されており、上段の導線と下段の導線どうしがお互いに空間を空けるように巻回される、請求項3記載の非接触充電モジュール。
- 前記平面コイル部の内側部は二段に重ねて巻回されており、上段の導線と下段の導線どうしがお互いに空間を詰めるように巻回される、請求項3記載の非接触充電モジュール。
- 請求項1記載の非接触充電モジュールを備える非接触充電機器。
- 請求項1記載の非接触充電モジュールを備える携帯端末。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US13/876,509 US20130181668A1 (en) | 2010-12-01 | 2011-10-27 | Non-contact charging module and non-contact charging instrument |
KR1020187025498A KR20180103174A (ko) | 2010-12-01 | 2011-10-27 | 비접촉 충전모듈 및 비접촉 충전기기 |
KR1020137007939A KR101896631B1 (ko) | 2010-12-01 | 2011-10-27 | 비접촉 충전모듈 및 비접촉 충전기기 |
US15/900,440 US20180175645A1 (en) | 2010-12-01 | 2018-02-20 | Wireless charging module having a wireless charging coil and a magnetic sheet |
Applications Claiming Priority (4)
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JP2010267986A JP4835787B1 (ja) | 2010-12-01 | 2010-12-01 | 非接触充電モジュール及び非接触充電機器 |
JP2010-267985 | 2010-12-01 | ||
JP2010267985A JP4835786B1 (ja) | 2010-12-01 | 2010-12-01 | 非接触充電モジュール及び非接触充電機器 |
JP2010-267986 | 2010-12-01 |
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Application Number | Title | Priority Date | Filing Date |
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US13/876,509 A-371-Of-International US20130181668A1 (en) | 2010-12-01 | 2011-10-27 | Non-contact charging module and non-contact charging instrument |
US15/900,440 Continuation US20180175645A1 (en) | 2010-12-01 | 2018-02-20 | Wireless charging module having a wireless charging coil and a magnetic sheet |
Publications (1)
Publication Number | Publication Date |
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WO2012073427A1 true WO2012073427A1 (ja) | 2012-06-07 |
Family
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PCT/JP2011/006025 WO2012073427A1 (ja) | 2010-12-01 | 2011-10-27 | 非接触充電モジュール及び非接触充電機器 |
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US (2) | US20130181668A1 (ja) |
KR (2) | KR20180103174A (ja) |
WO (1) | WO2012073427A1 (ja) |
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US10269486B2 (en) | 2014-05-19 | 2019-04-23 | Apple Inc. | Magnetically permeable core and inductive power transfer coil arrangement |
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Also Published As
Publication number | Publication date |
---|---|
KR20180103174A (ko) | 2018-09-18 |
KR20130139890A (ko) | 2013-12-23 |
US20180175645A1 (en) | 2018-06-21 |
US20130181668A1 (en) | 2013-07-18 |
KR101896631B1 (ko) | 2018-09-07 |
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