WO2013035282A1 - 非接触充電モジュール、電子機器、及び非接触充電機器 - Google Patents
非接触充電モジュール、電子機器、及び非接触充電機器 Download PDFInfo
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- WO2013035282A1 WO2013035282A1 PCT/JP2012/005508 JP2012005508W WO2013035282A1 WO 2013035282 A1 WO2013035282 A1 WO 2013035282A1 JP 2012005508 W JP2012005508 W JP 2012005508W WO 2013035282 A1 WO2013035282 A1 WO 2013035282A1
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- charging module
- contact charging
- coil
- magnet
- primary
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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
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0231—Magnetic circuits with PM for power or force generation
- H01F7/0247—Orientating, locating, transporting arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/46—Accumulators structurally combined with charging apparatus
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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
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a non-contact charging module, an electronic device, and a non-contact charging device having a planar coil portion and a magnetic sheet.
- 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 transmitting-side non-contact charging module or a receiving-side non-contact charging module and a magnetic sheet as in (Patent Document 1).
- the position of the primary side contactless charging module (transmitting side contactless charging module) and the position of the secondary side contactless charging module (receiving side contactless charging module) need to be accurately aligned. is there. This is to efficiently perform electromagnetic induction for power transmission.
- FIG. 11 is a diagram illustrating a state in which a non-contact charging module (for example, a secondary-side non-contact charging module) is aligned by a magnet provided in the other non-contact charging module (for example, a primary-side non-contact charging module). is there. This is because the magnet is mounted on at least one of the primary side non-contact charging module or the secondary side non-contact charging module, and the mutual magnets or one magnet and the other magnetic sheet are attracted to perform alignment. Is the method.
- a non-contact charging module for example, a secondary-side non-contact charging module
- a convex portion is formed on the charging surface of a charger equipped with a primary side non-contact charging module, and a concave portion is formed and fitted into an electronic device equipped with a secondary side non-contact charging module.
- This is a method for performing proper alignment.
- the primary side non-contact charging module detects the position of the coil of the secondary side non-contact charging module so that the coil of the primary side non-contact charging module is automatically It is a method of moving to a position.
- the portable device can be charged anywhere on the charging surface of the charger by providing the charger with a large number of coils.
- the L value of the coil provided in each non-contact charging module is large depending on whether the magnet is used to align the primary non-contact charging module and the secondary non-contact charging module or not. Change.
- the electromagnetic induction for power transmission uses the L value of the coil provided in each non-contact charging module to determine its resonance frequency.
- an object of the present invention is to use a magnet provided in the other non-contact charging module which is the counterpart of power transmission when aligning the primary non-contact charging module and the secondary non-contact charging module. Regardless of whether or not it is used, the change in the L value of the coil provided in the non-contact charging module is suppressed, and it is suitably used in both cases where a magnet is used and when a magnet is not used It is possible to provide a non-contact charging module, an electronic device, and a non-contact charging device that can be downsized.
- the present invention provides a case where alignment is performed using a circular magnet provided in the other non-contact charging module, and alignment with the other non-contact charging module.
- a magnetic sheet having a surface on which the planar coil portion is placed, and the substantially rectangular hollow portion of the planar coil portion has a short side shorter than the diameter of the circular magnet and a long side. The configuration is longer than the diameter of the circular magnet.
- the primary side non-contact charging module and the secondary side non-contact charging module when positioning the primary side non-contact charging module and the secondary side non-contact charging module, when using the magnet provided in the other non-contact charging module which is the other side of the power transmission, or Regardless of the case of not using it, the change in the L value of the coil provided in the non-contact charging module is suppressed, and it can be suitably used in both cases of using a magnet and not using a magnet. It is possible to provide a non-contact charging module in which miniaturization is achieved and a non-contact charging device using the same.
- the block diagram which shows the non-contact electric power transmission apparatus in embodiment of this invention The figure which shows the structure of the non-contact charger in embodiment of this invention
- the figure which shows the primary side non-contact charge module in embodiment of this invention Detailed drawing which shows the primary side non-contact charge module in the form of execution of this invention
- the figure which shows the structure of the portable terminal device in embodiment of this invention The figure which shows the secondary side non-contact charge module in embodiment of this invention Detailed view showing a secondary side non-contact charging module in an embodiment of the present invention
- the figure which shows the relationship between a primary side non-contact charge module provided with a magnet, and a secondary side non-contact charge module The figure which shows the relationship between the internal diameter of a coil, and the L value of a coil
- the figure which shows a mode that a non-contact charge module for example, secondary side non-
- FIG. 1 is a block diagram showing a non-contact power transmission device according to an embodiment of the present invention.
- the non-contact power transmission device includes a primary-side non-contact charging module 41 (transmitting-side non-contact charging module) and a secondary-side non-contact charging module 42 (receiving-side non-contact charging module). Utilizing this, power is transmitted from the primary side non-contact charging module 41 to the secondary side non-contact charging module 42.
- This non-contact power transmission device is used for power transmission of about 5 W or less.
- the frequency of power transmission is about 110 to 205 kHz.
- the primary side non-contact charging module 41 is mounted on, for example, a charger, and the secondary side non-contact charging module 42 is mounted on, for example, a mobile phone, a digital camera, a PC, or the like.
- the primary side non-contact charging module 41 includes a primary side coil 21a, a magnetic sheet 51, a resonance capacitor (not shown), and a power input unit 71.
- the power input unit 71 is connected to a commercial power source 300 as an external power source, receives power supply of about 100 to 240 V, converts it into a predetermined current A (DC 12 V, 1 A), and supplies it to the primary coil 21 a.
- the primary coil 21a generates a magnetic field according to its shape, number of turns, and supplied current.
- the resonance capacitor is connected to the primary side coil 21a and determines the resonance frequency of the magnetic field generated from the primary side coil 21a according to the relationship with the primary side coil 21a. The electromagnetic induction action from the primary side non-contact charging module 41 to the secondary side non-contact charging module 42 is performed by this resonance frequency.
- the secondary side non-contact charging module 42 includes a secondary side coil 21b, a magnetic sheet 52, a resonance capacitor (not shown), a rectifier circuit 72, and a power output unit 82.
- the secondary side coil 21b receives the magnetic field generated from the primary side coil 21a, converts the magnetic field into a predetermined current B by electromagnetic induction, and passes the secondary side via the rectifier circuit 72 and the power output unit 82. Output to the outside of the non-contact charging module 42.
- the rectifier circuit 72 rectifies the predetermined current B, which is an alternating current, and converts it into a predetermined current C, which is a direct current (DC 5 V, 1.5 A).
- the power output unit 82 is an external output unit of the secondary side non-contact charging module 42, and power is supplied to the electronic device 200 connected to the secondary side non-contact charging module 42 via the power output unit 82. Do.
- both the primary side coil 21a of the primary side non-contact charging module 41 and the secondary side coil 21b of the secondary side non-contact charging module 42 are wound in a substantially rectangular shape. It need not be a coil. That is, as will be described in detail later, the other side (secondary non-contact charging module 42 for the primary non-contact charging module 41, primary non-contact charging module 41 for the secondary non-contact charging module 42) Whether or not a magnet is provided, the purpose is to stabilize the transmission efficiency. Therefore, a substantially rectangular coil may be used only on one side.
- FIG. 2 is a diagram showing a configuration of the non-contact charger according to the embodiment of the present invention.
- the non-contact charger shown in FIG. 2 is shown so that the inside can be understood.
- the non-contact charger 400 that transmits electric power using electromagnetic induction has a primary-side non-contact charging module 41 inside a case that constitutes its exterior.
- the non-contact charger 400 has a plug 401 that plugs into an outlet 301 of a commercial power supply 300 installed indoors or outdoors. By inserting the plug 401 into the outlet 301, the non-contact charger 400 can be supplied with power from the commercial power source 300.
- the non-contact charger 400 is installed on the desk 501 and the primary-side non-contact charging module 41 is disposed in the vicinity of the surface 402 of the non-contact charger 400 opposite to the desk surface. And the main plane of the primary side coil 21a in the primary side non-contact charge module 41 is arrange
- the non-contact charger 400 may be installed on a wall surface. In this case, the non-contact charger 400 is disposed in the vicinity of the surface opposite to the wall surface side.
- the primary side non-contact charging module 41 may include a magnet 30 a used for alignment with the secondary side non-contact charging module 42. In this case, it arrange
- FIG. 3 is a diagram showing the primary side non-contact charging module in the embodiment of the present invention, and shows a case where the primary side coil is a substantially rectangular coil.
- the primary side non-contact charging module 41 includes a primary side coil 21a in which a conductive wire is wound in a substantially rectangular shape and a magnetic sheet 51 provided so as to face the surface of the primary side coil 21a. .
- the planar coil portion of the primary-side non-contact charging module 41 includes a primary coil 21a in which a conductor is wound outward so as to draw a vortex in a substantially rectangular shape on the surface, and 1 Terminals 22a and 23a are provided as current supply portions provided at both ends of the secondary coil 21a. That is, the terminals 22a and 23a serving as current supply units supply the current from the commercial power supply 300, which is an external power supply, to the primary coil 21a.
- the primary coil 21a is obtained by winding a conducting wire in parallel on a plane, and a surface formed by the coil is called a coil surface.
- the thickness direction is the direction in which the primary coil 21a and the magnetic sheet 51 are stacked.
- the magnetic sheet 51 includes a flat portion 31a on which the primary coil 21a is placed, a central portion 32a in the central portion of the flat portion 31a and corresponding to the hollow area of the primary coil 21a, and the primary side. It is comprised from the linear recessed part 33a in which a part of lead wire of the coil 21a is inserted.
- the central portion 32a has a convex shape, a flat shape, a concave shape, or a shape that is a through hole with respect to the flat portion 31a, and may be any shape. If it is a convex part shape, the magnetic flux of the primary side coil 21a can be strengthened.
- a recessed part, a convex part, and a through-hole may be formed in the same shape and the same size as a hollow part, and may be formed in a different shape and a thing smaller than a hollow part.
- the primary side coil 21a is wound outward from a substantially rectangular hollow portion of about 12 mm ⁇ 18 mm, and the rectangle formed by the outer end is about 18 mm ⁇ It is 23 mm. That is, the primary coil 21a is wound in a substantially rectangular donut shape.
- substantially rectangular means that it may have round (curved part) in four corners.
- the conducting wires are wound so as to leave a space between each other, the stray capacitance between the upper conducting wire and the lower conducting wire is reduced, and the AC resistance of the primary coil 21a can be kept small. Moreover, the thickness of the primary side coil 21a can be suppressed by winding so that space may be packed.
- the primary side non-contact charging module 41 may include a magnet 30 a used for alignment with the secondary side non-contact charging module 42.
- This is determined by the standard (WPC) to be circular, the diameter is 15.5 mm or less, and the like.
- the magnet 30a has a coin shape and must be arranged so that the center thereof coincides with the winding center axis of the primary coil 21a. This is to reduce the influence of the magnet 30a on the primary coil 21a.
- the first method for arranging the magnet 30a is to arrange the magnet 30a on the upper surface of the central portion 32a of the magnetic sheet 51. Further, as a second method of arranging the magnet 30a, there is a method of arranging the magnet 30a instead of the central portion 32a of the magnetic sheet 51. In the second method, since the magnet 30a is disposed in the hollow region of the primary coil 21a, the primary non-contact charging module 41 can be reduced in size.
- the magnet 30a shown in FIG. 3 is unnecessary.
- a magnet is provided in the hollow part of the primary side coil 21a or the secondary side coil 21b incorporated in at least one of the primary side non-contact charging module and the secondary side non-contact charging module. Accordingly, the magnet and the magnet or the magnet and the magnetic sheet 51 can be brought as close as possible, and at the same time, the primary side and secondary side coils can be brought close to each other.
- the magnet is circular. In the present embodiment, the magnet has a diameter of about 15.5 mm (about 10 mm to 20 mm) and a thickness of about 1.5 to 2 mm.
- a neodymium magnet is used, and the strength may be about 75 mT to 150 mT.
- the distance between the coil of the primary side non-contact charging module and the coil of the secondary side non-contact charging module is about 2 to 5 mm, sufficient alignment can be achieved with such a magnet. .
- the magnetic flux When a magnetic flux is generated between the primary side coil 21a and the secondary side coil 21b for power transmission, if a magnet exists between and around the primary side coil 21a and the secondary side coil 21b, the magnetic flux extends to avoid the magnet. Alternatively, the magnetic flux penetrating through the magnet becomes eddy current or heat generation in the magnet, resulting in loss. Furthermore, when the magnet is disposed in the vicinity of the magnetic sheet, the magnetic permeability of the magnetic sheet in the vicinity of the magnet is lowered. Therefore, the magnet 30a provided in the primary side non-contact charging module 41 reduces the L value of both the primary side coil 21a and the secondary side coil 21b. As a result, the transmission efficiency between the non-contact charging modules decreases.
- FIG. 4 is a detailed view showing the primary-side non-contact charging module in the embodiment of the present invention.
- 4A is a top view of the primary side non-contact charging module
- FIG. 4B is a cross-sectional view taken along line AA of the primary side non-contact charging module in FIG. 4A.
- FIG. 4C is a cross-sectional view taken along the line BB of the primary non-contact charging module in FIG. 4A when a linear recess is provided.
- 4D is a cross-sectional view taken along the line BB of the primary non-contact charging module in FIG. 4A when a slit is provided.
- 4A and 4B show a case where the magnet 30a is not provided. In addition, when provided, the magnet 30a shown with the dotted line is provided.
- the primary side coil 21a extends from the winding start portion located in the central region of the primary side coil 21a to the terminal 23a. Is two steps in the thickness direction, and the remaining region is one step. At this time, 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 alternating current of the primary coil 21a. Resistance can be kept small.
- the number of turns of the primary side coil 21a can be increased to increase the current flowing through the primary side coil 21a.
- the conducting wire located in the upper stage and the conducting wire located in the lower stage are wound so as to close each other, thereby flowing the primary side coil 21a while suppressing the thickness of the primary side coil 21a.
- the current can be increased.
- the magnetic sheet 51 moves away from the secondary non-contact charging module 42 even though the primary coil 21a approaches the secondary non-contact charging module 42.
- the influence of the magnet 30b when the secondary-side non-contact charging module 42 is provided with the magnet 30b can be suppressed. This also applies to the relationship between the magnet 30a of the primary-side non-contact charging module 41, the secondary-side coil 21b, and the magnetic sheet 52. The influence of the magnets 30a and 30b will be described later.
- the primary coil 21a is formed by using a conducting wire having a circular cross section, but the conducting wire may be a conducting wire having a rectangular or polygonal cross section.
- the conducting wire may be a conducting wire having a rectangular or polygonal cross section.
- the primary side coil 21a is wound in one step rather than being wound in two steps in the thickness direction, and thus the AC resistance of the primary side coil 21a 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 primary coil 21a in two stages. Further, the primary side non-contact charging module 41 can be thinned by winding in one stage. In addition, when the planar coil part 2 is comprised with two conducting wires, since two conducting wires are electrically connected by solder etc. in the terminal 22a and 23a part, two conducting wires are one thick conducting wire.
- the two conducting wires may be wound in parallel with the coil surface, or may be wound in parallel with the coil surface. That is, in the case of being parallel to the coil surface, 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.
- thickness can be restrained by electrically joining two conducting wires in terminal 22a and 23a part, and making it function like one conducting wire. That is, for example, 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.
- the thickness of one turn of the primary coil 21a is 0.25 mm
- the radial width of the primary coil 21a is 0.25 mm.
- the thickness direction is the direction in which the primary coil 21a and the magnetic sheet 51 are stacked. Further, the primary coil 21a may be overlapped in two steps in the thickness direction only in a portion on the center side, and the remaining outer portion may be one step.
- the thickness of the primary side non-contact charging module 41 increases, but the current flowing through the primary side coil 21a can be increased by effectively increasing the cross-sectional area of the conducting wire. A sufficient number of windings can be easily secured.
- the primary side coil 21a is constituted by a conducting wire of about 0.18 to 0.4 mm, and among these, the primary side coil 21a of the primary side non-contact charging module 41 has a value of 0. A conductor of 25 to 0.35 mm is preferred.
- the alternating current resistance of the primary side coil 21a is low, the loss in the primary side coil 21a is prevented, and by improving the L value, the power transmission efficiency of the primary side non-contact charging module 41 depending on the L value is improved. Can be improved.
- the terminals 22a and 23a may be close to each other or may be arranged apart from each other, the primary side non-contact charging module 41 is easier to mount if they are arranged apart.
- the magnetic sheet 51 is provided in order to improve the power transmission efficiency of non-contact charging using electromagnetic induction, and includes a flat portion 31a and a central portion 32a that is the center and corresponds to the inner diameter of the coil 21. And a linear recess 33a.
- the magnet 30a for positioning the primary side non-contact charging module 41 and the secondary side non-contact charging module 42 is provided, the magnet 30a may be disposed above the center portion 32a, or the magnet 30a may be positioned at the center portion. You may arrange
- the magnetic sheet 51 a Ni—Zn ferrite sheet, a Mn—Zn ferrite sheet, a Mg—Zn ferrite sheet, or the like can be used.
- the magnetic sheet 51 may have a single-layer configuration, a configuration in which a plurality of the same materials are stacked in the thickness direction, or a plurality of different magnetic sheets 51 may be stacked in the thickness direction. It is preferable that at least the magnetic permeability is 250 or more and the saturation magnetic flux density is 350 mT or more.
- An amorphous metal can also be used as the magnetic sheet 51.
- a ferrite sheet is used as the magnetic sheet 51, it is advantageous in that the AC resistance of the primary coil 21a is reduced.
- an amorphous metal is used as the magnetic sheet, the primary coil 21a can be made thin.
- the magnetic sheet 51 used for the primary-side non-contact charging module 41 has a size that fits within about 50 ⁇ 50 mm and has a thickness of about 3 mm or less.
- the magnetic sheet 51 is approximately square 20 mm ⁇ 25 mm. It is desirable that the magnetic sheet 51 be formed to be approximately the same or larger than the outer peripheral end of the primary coil 21a.
- the shape of the magnetic sheet 51 may be a circle, a rectangle, a polygon, a rectangle having a large curve at each corner, or a polygon.
- the linear recess 33a or the slit 34a accommodates the lead wire from the coil winding start portion (the innermost portion of the coil) to the terminal. Thereby, it can prevent that the conducting wire from the winding start part of a coil to a terminal overlaps in the thickness direction of the primary side coil 21a, and can suppress the thickness of the primary side non-contact charge module 41. Further, by setting the size of the linear recess 33a or the slit 34a to the minimum size for accommodating the conductive wire from the coil winding start portion to the terminal, the generation of leakage magnetic flux can be suppressed. Further, as shown in FIG.
- the linear recess 33a or the slit 34a is not limited to be extended in parallel with the long side direction of the primary coil 21a, but may be parallel to the short side direction. Further, the cross-sectional shape of the linear recess 33a is not limited to a rectangular shape, and may be an arc shape or rounded.
- the linear recess 33a or the slit 34a is substantially perpendicular to the end of the magnetic sheet 51 where one end intersects, and is formed so as to overlap the outer shape of the hollow portion (side of the substantially rectangular hollow portion).
- the length of the linear recess 33a or the slit 34a depends on the size of the hollow portion of the coil 21, and is about 5 mm to 15 mm in this embodiment.
- the linear recess 33a or the slit 34a may be formed at a portion where the winding start portion of the primary coil 21a at the end of the magnetic sheet 51 and the end of the hollow portion are closest. Thereby, the formation area of the linear recessed part 33a or the slit 34a can be suppressed to the minimum, and the transmission efficiency of a non-contact electric power transmission apparatus can be improved.
- the length of the linear recess 33a or the slit 34a is about 5 mm to 10 mm. In either arrangement, the inner end of the linear recess 33a or the slit 34a is connected to the center 32a.
- the linear recess 33a or the slit 34a may be arranged in another manner. That is, it is desirable that the primary side coil 21a has a one-stage structure as much as possible. In that case, all the turns in the radial direction of the primary side coil 21a have a one-stage structure, or one part has a one-stage structure. It can be considered that the portion has a two-stage structure. Accordingly, one of the terminals 22a and 23a can be pulled out from the outer periphery of the primary coil 21a, but the other must be pulled out from the inside.
- the magnetic sheet 51 is not provided with a through hole or a slit, so that magnetic flux can be prevented from leaking and the power transmission efficiency of the primary side non-contact charging module 41 can be improved.
- the slit 34a the magnetic sheet 51 can be easily formed.
- the linear recessed part 33a it is not limited to the linear recessed part 33a in which a cross-sectional shape becomes a square shape, You may be circular arc shape or round.
- the secondary side coil 21b in the secondary side non-contact charging module 42 receives the magnetic field generated by the primary side non-contact charging module 41 and performs power transmission.
- a magnetic field may be generated so as to avoid the magnets, or the magnetic field trying to pass through the magnets may be lost.
- the magnetic permeability of the magnetic sheet 51 near the magnet is reduced. That is, the magnetic field is weakened by the magnet. Therefore, in order to minimize the magnetic field weakened by the magnet, measures such as separating the primary side coil 21a and the secondary side coil 21b from the magnet and providing the magnetic sheet 51 which is not easily affected by the magnet are provided. It is necessary to take.
- the primary-side non-contact charging module 41 is used in a fixed terminal as a transmission side for power supply, there is a margin in the occupied space in the fixed terminal of the primary-side non-contact charging module 41. Moreover, since the electric current which flows into the primary side coil 21a of the primary side non-contact charge module 41 is large, the insulation of the magnetic sheet 51 becomes important. This is because if the magnetic sheet 51 is conductive, a large current flowing through the primary side coil 21 a may be transmitted to other components via the magnetic sheet 51.
- the magnetic sheet 51 mounted on the primary side non-contact charging module 41 has a thickness of 400 ⁇ m or more (preferably 600 ⁇ mq to 1 mm), magnetic properties of permeability 250 or more, and magnetic flux saturation density 350 mT.
- a Ni—Zn ferrite sheet (insulating) having the above is preferable.
- a Mn—Zn ferrite sheet (conductive) can be used instead of the Ni—Zn ferrite sheet.
- the L value of the primary-side coil 21a of the primary-side non-contact charging module 41 varies greatly depending on whether or not the magnet 30a is used for alignment. That is, the magnetic flux between the primary side and the secondary side non-contact charging module is hindered by the presence of the same magnet in the magnet 30a or the secondary side non-contact charging module 42 in the primary side non-contact charging module 41, When there is a magnet, the L value of the primary side coil 21a of the primary side non-contact charging module 41 is significantly reduced.
- the magnetic sheet 51 is preferably a high saturation magnetic flux density material (saturation magnetic flux density is 350 mT or more).
- the high saturation magnetic flux density material does not easily saturate the magnetic flux even if the magnetic field becomes strong, it is difficult to be affected by the magnet 30a, and the L value of the coil 21 when the magnet 30a is used can be improved. Therefore, the magnetic sheet 51 can be thinned.
- the magnetic permeability of the magnetic sheet 51 is at least 250 or more, preferably 350 or more.
- the L value depends on the thickness of the magnetic sheet 51, but the ferrite sheet thickness may be 400 ⁇ m or more. Note that the ferrite sheet can reduce the AC resistance of the coil 21 as compared to an amorphous metal magnetic sheet, but may be an amorphous metal. By using such a magnetic sheet 51, even if at least one of the primary-side non-contact charging module 41 and the secondary-side non-contact charging module 42 includes a magnet, the primary-side non-contact charging module 41 is a magnet. Can reduce the effect of.
- the ferrite sheet is Mn—Zn, it is possible to further reduce the thickness. That is, according to the standard (WPC), the frequency of electromagnetic induction is determined to be about 100 kHz to 200 kHz (for example, 120 kHz). In such a low frequency band, the Mn—Zn ferrite sheet has high efficiency. Note that the Ni—Zn ferrite sheet is highly efficient at high frequencies.
- FIG. 5 is a diagram showing the configuration of the mobile terminal device in the embodiment of the present invention, and is a perspective view when the mobile terminal device is disassembled.
- the portable terminal device 520 includes a liquid crystal panel 521, operation buttons 522, a substrate 523, a battery pack 524, and the like.
- a mobile terminal device 520 that receives power using electromagnetic induction is a mobile terminal device that includes a casing 525 that forms the exterior thereof and a secondary non-contact charging module 42 inside the casing 526.
- a substrate 523 provided with a control unit is provided on the back surface of the substrate 523.
- the battery pack 524 is connected to the substrate 523 and supplies power to the substrate 523.
- a secondary-side non-contact charging module 42 is provided on the back surface of the battery pack 524, that is, on the housing 526 side.
- the secondary side non-contact charging module 42 is supplied with electric power from the primary side non-contact charging module 41 by electromagnetic induction action, and charges the battery pack 524 using the electric power.
- the secondary side non-contact charging module 42 includes a secondary side coil 21b, a magnetic sheet 52, and the like.
- the secondary coil 21b and the magnetic sheet 52 are arranged in this order from the case 526 side, so that the influence of the substrate 523 and the battery pack 524 is reduced and the power supply is received. Can do.
- the secondary side non-contact charging module 42 may have a magnet 30b used for alignment with the primary side non-contact charging module 41. In this case, it arrange
- the magnet 30b has a coin shape and must be arranged so that the center thereof coincides with the winding center axis of the primary coil 21a. This is to reduce the influence of the magnet 30a on the primary coil 21a.
- the magnet 30b provided in the secondary side non-contact charging module 42 reduces the L value of both the primary side coil 21a and the secondary side coil 21b.
- the first method for arranging the magnet 30b is to arrange the magnet 30b on the upper surface of the central portion 32b of the magnetic sheet 52. Further, as a second method of arranging the magnet 30b, there is a method of arranging the magnet 30b instead of the central portion 32b of the magnetic sheet 52. In the second method, since the magnet 30b is disposed in the hollow region of the secondary coil 21b, the secondary non-contact charging module 42 can be reduced in size.
- the magnet 30b is unnecessary.
- FIG. 6 is a diagram showing the secondary side non-contact charging module in the embodiment of the present invention, and shows a case where the secondary side coil is a circular coil.
- FIG. 7 is a detailed view showing the secondary side non-contact charging module in the embodiment of the present invention.
- 7A is a top view of the secondary side non-contact charging module
- FIG. 7B is a cross-sectional view of the secondary side non-contact charging module taken along the line CC in FIG. 7A.
- FIG. 7C is a DD cross-sectional view of the secondary side non-contact charging module in FIG. 7A in the case where a linear recess is provided.
- FIG. 7D is a DD cross-sectional view of the secondary-side non-contact charging module in FIG. 7A when a slit is provided.
- 7A and 7B show a case where the magnet 30b is not provided. In addition, when provided, the magnet 30b shown with the dotted line is provided.
- FIGS. 3 to 4 for explaining the primary side non-contact charging module 41
- the configuration of the secondary side non-contact charging module 42 is basically the same as that of the primary side non-contact charging module 41.
- the size and material of the magnetic sheet 52 are different from the primary side non-contact charging module 41 in the secondary side non-contact charging module 42.
- the magnetic sheet 52 used for the secondary-side non-contact charging module 42 has a size that fits within about 40 ⁇ 40 mm and has a thickness of about 2 mm or less.
- the sizes of the magnetic sheet 51 used for the primary side non-contact charging module 41 and the magnetic sheet 52 used for the secondary side non-contact charging module 42 are different. This is because the secondary side non-contact charging module 42 is generally mounted on a portable electronic device, and downsizing is required.
- the magnetic sheet 52 is approximately 20 mm ⁇ 25 mm having a substantially square shape. It is desirable that the magnetic sheet 52 be formed to be approximately the same or larger than the outer peripheral end of the secondary coil 21b.
- the shape of the magnetic sheet 51 may be a circle, a rectangle, a polygon, a rectangle having a large curve at each corner, or a polygon.
- the secondary-side non-contact charging module 42 is used in a mobile terminal as a power supply receiving side, there is no room in the occupied space of the secondary-side non-contact charging module 42 in the mobile terminal. Further, since the current flowing through the secondary side coil 21b of the secondary side non-contact charging module 42 is small, the insulating property of the magnetic sheet 52 is not so required.
- the secondary side coil 21b is constituted by a conducting wire of about 0.18 to 0.35 mm, and among these, the secondary side coil 21b of the secondary side non-contact charging module 42 is set to 0. A conducting wire of about 18 to 0.30 mm is suitable.
- the mounted electronic device When the mounted electronic device is a mobile phone, it is often arranged between a case constituting the exterior of the mobile phone and a battery pack located inside the case.
- a battery pack is an aluminum casing, it adversely affects power transmission. This is because an eddy current is generated in aluminum in a direction in which the magnetic flux generated by the coil is weakened, so that the magnetic flux of the coil is weakened. Therefore, it is necessary to provide the magnetic sheet 52 between the aluminum that is the exterior of the battery pack and the secondary coil 21b disposed on the exterior to reduce the influence on the aluminum.
- the magnetic sheet 52 used for the secondary side non-contact charging module 42 has a high magnetic permeability and saturation magnetic flux density, and can increase the L value of the secondary side coil 21b as much as possible. is important.
- any magnetic sheet having a magnetic permeability of 250 or more and a saturation magnetic flux density of 350 mT or more may be used similarly to the magnetic sheet 51.
- it is a sintered body of Mn—Zn-based ferrite, preferably having a magnetic permeability of 1500 or more, a saturation magnetic flux density of 400 or more, and a thickness of about 400 ⁇ m or more.
- Ni—Zn-based ferrite may be used, and if it has a magnetic permeability of 250 or more and a saturation magnetic flux density of 350 or more, power transmission with the primary side non-contact charging module 41 is possible.
- the secondary coil 21b is also wound in a substantially rectangular shape, similar to the primary coil 21a. There are a case where positioning is performed by providing the magnet 30a in the primary side non-contact charging module 41 and a case where positioning is performed without the magnet 30a.
- the diameter of the circular magnet 30a is 15.5 mm or less, and 15.5 mm in the present embodiment.
- the relationship between the size of the magnet 30a and the size of the hollow portion of the secondary coil 21b will be described.
- the magnet 30a is arrange
- the same relationship is realized also when the magnet 30b is arrange
- the magnet 30b corresponds to the magnet 30a
- the primary-side non-contact charging module 41 corresponds to the secondary-side non-contact charging module 42.
- a method of aligning the primary side non-contact charging module 41 and the secondary side non-contact charging module 42 for example, the following methods can be cited.
- a method of performing physical (formal) forced alignment such as forming a protrusion on the charging surface of the charger and forming a recess on the secondary electronic device.
- a method of performing alignment by attracting each other's magnets or one magnet and the other magnetic sheet by mounting magnets on at least one of the primary side and the secondary side.
- a method in which the primary side automatically moves the primary side coil to the position of the secondary side coil by detecting the position of the secondary side coil.
- a primary (charging) non-contact charging module using a magnet a primary (charging) non-contact charging module using a magnet.
- the other non-contact charging module is provided for alignment with the other non-contact charging module.
- a first means for aligning using a magnet and a second means for aligning without using a magnet both of which can be aligned with the other non-contact charging module and transmit power It is necessary to configure so as to be possible.
- the magnetic permeability of the magnetic sheet 52 decreases due to the presence of the magnet 30a near the secondary side non-contact charging module 42 for alignment.
- the magnetic permeability of the magnetic sheet 52 is most reduced in the portion close to the magnet 30a (generally around the central portion 32b), and the degree of decrease decreases (difficult to decrease) as the distance from the magnet 30a increases. Become).
- the L value of the secondary coil 21b decreases. Therefore, a decrease in the L value can be suppressed by increasing the distance between the secondary coil 21b and the magnet 30a.
- FIG. 8 is a diagram showing a relationship between a primary side non-contact charging module and a secondary side non-contact charging module including a magnet.
- 8A shows a case where a positioning magnet is used when the inner width of the coil is small
- FIG. 8B shows a case where a positioning magnet is used when the inner width of the coil is large
- FIG. 8C shows a case where the inner width of the coil is small.
- FIG. 8D shows the case where the alignment magnet is not used when the inner width of the coil is large.
- FIG. 9 is a diagram showing the relationship between the inner diameter of the coil and the L value of the coil.
- FIG. 9 is a diagram showing the relationship between the inner diameter of the coil and the L value of the coil.
- the secondary side coil 21b of the secondary side non-contact charge module 42 which performs electric power transmission with the primary side non-contact charge module 41 provided with the magnet 30a is demonstrated.
- the description of the secondary side coil 21b related to the secondary side non-contact charging module 42 described below is based on the secondary side non-contact charging module 42 that performs power transmission with the secondary side non-contact charging module 42 including the magnet 30b. This also applies to the secondary coil 21b of the module 42.
- the primary side coil 21a and the secondary side coil 21b are opposed to each other. Of the primary side coil 21a and the secondary side coil 21b, a magnetic field is also generated in the inner portions 211 and 212 to transmit power.
- the inner portions 211 and 212 are opposed to each other. Further, the inner portions 211 and 212 are also portions close to the magnet 30a, and are easily affected by the magnet 30a. That is, when a magnetic flux is generated between the primary side coil and the secondary side coil for power transmission, if a magnet exists between and around the primary side coil and the secondary side coil, the magnetic flux extends to avoid the magnet. Alternatively, the magnetic flux penetrating through the magnet becomes eddy current or heat generation in the magnet, resulting in loss.
- the magnet 30a provided in the primary side non-contact charging module 41 weakens the magnetic fluxes of the inner side portions 211 and 212 of the primary side coil 21a and the secondary side coil 21b, and has an adverse effect. As a result, the transmission efficiency between the non-contact charging modules decreases. Therefore, in the case of FIG. 8A, the inner portions 211 and 212 that are easily affected by the magnet 30a are enlarged. On the other hand, in FIG. 8C in which no magnet is used, the L value increases because the number of turns of the secondary coil 21b is large.
- the numerical value greatly decreases from the L value in FIG. 8C to the L value in FIG. 8A.
- the non-contact charging module is mounted on a charger, an electronic device, or the like, it is necessary to reduce the size, and at the same time, it cannot be formed in a size larger than a certain size. Therefore, if the inner width of the primary side coil 21a and the secondary side coil 21b is increased to reduce the adverse effect from the magnet 30a, the number of turns decreases, and the L value itself decreases regardless of the presence or absence of the magnet. End up.
- the number of turns of the secondary coil 21b is reduced to reduce the inner diameter of the secondary coil 21b.
- the influence of the magnet 30a on the secondary coil 21b is reduced. That is, the L value of the secondary coil 21b is close to when the magnet 30a is used for positioning the primary side non-contact charging module 41 and the secondary side non-contact charging module 42 and when it is not used. Therefore, the resonance frequency when using the magnet 30a and when not using it is very close.
- the result of FIG. 9 is the same as the L value of the primary side coil 21a of the primary side non-contact charging module 41 when the secondary side non-contact charging module 42 includes the magnet 30b.
- the substantially rectangular hollow portion of the secondary coil 21b is configured such that the short side is shorter than the diameter of the circular magnet and the long side is longer than the diameter of the circular magnet. That is, since the maximum diameter of the magnet 30a is 15.5 mm, it is preferable that the long side is longer than 15.5 mm. Accordingly, even if the short side is shortened to 15.5 mm or less, the effect of the present application can be obtained for any magnet. This will be described in detail with reference to FIG.
- FIG. 10 is a diagram showing a positional relationship between a secondary coil wound in a rectangular shape, a secondary coil wound in a circular shape, and a magnet provided in the primary non-contact charging module.
- 10A shows a rectangular case
- FIG. 10B shows a circular case.
- the length of the outer long side of the rectangular coil in FIG. 10A and the diameter of the outer diameter of the circular coil in FIG. 10B are the same n
- the inner long side y of the rectangular coil and the inner circle of the circular coil are The diameters x are the same.
- z is the inner short side of the rectangular coil.
- the coil is the secondary side coil 21b provided in the secondary side non-contact charging module 42.
- x In order to ensure a sufficient distance between the inner circle (the outer periphery of the hollow portion) of the circular coil 2d and the magnet 30a, x must be formed larger than m. As a result, the width is n in the vertical width, the horizontal width, and any direction of the circular coil. Further, the distance between the inner circle (the outer periphery of the hollow portion) of the circular coil 2d and the magnet 30a is (x ⁇ m) / 2 in FIG. 10B at any angle. That is, the distance between the inner circle of the circular coil 2d (the outer periphery of the hollow portion) and the magnet 30a is (xm) / 2 at the maximum or minimum.
- the rectangular coil 2c of FIG. 10A a part of the long side portion overlaps the magnet 30a. That is, z ⁇ m.
- the corner portion (four corners) and the short side portion of the rectangular coil 2c do not overlap (y> m).
- the diagonal line of the rectangle is larger than y
- the distance from the magnet 30a is larger than (xm) / 2 in the corner portion.
- the magnetic flux is concentrated on the corner portion. This is because when the coil is wound so that corners are formed, the magnetic flux concentrates on the corners. Further, when the coil is wound in a rectangular shape, the magnetic flux concentrates on the short side rather than the long side.
- the short side of the rectangular coil 2c in FIG. 10A has a shortest distance of (x ⁇ m) / 2 from the magnet 30a, and the distance is longer than that except for the center of the short side.
- the rectangular coil 2c of FIG. 10A even if a part of the long side portion overlaps the magnet 30a, the corner (corner) where the magnetic flux is most concentrated is far from the magnet 30a, and the distance is (x ⁇ m) / 2 is larger. Further, the distance between the short side and the magnet 30a is (xm) / 2 or more. Thereby, although the rectangular coil 2c of FIG. 10A has achieved miniaturization compared with the circular coil 2d of FIG.
- the term “substantially rectangular” means that the coil may be wound in a curved shape instead of a right angle at the four corners.
- the curved shapes at the four corners may be within 30% of the sides of the respective hollow portions.
- the curve of the hollow portion may be within 3.6 mm on both sides of the short side and within 5.4 mm on both sides of the long side.
- the outer shape (outer edge shape) of the coil varies depending on the shape of the hollow portion. Note that when the curved shapes at the four corners are 30% or more of the sides of the respective hollow portions, the rectangular shape approaches an elliptical shape. Then, the phenomenon that the magnetic field concentrates on the corner (corner) weakens, and at the same time, the corner (corner) approaches the magnet 30a. Therefore, it is within 30%.
- the L value is about 9.2 ⁇ H when the non-contact charging module of the power transmission partner is provided with a magnet, and the L value is about 26.4 ⁇ H when the magnet is not provided.
- the rate is about 65%.
- the L value is about 9.7 ⁇ H when the non-contact charging module of the power transmission partner is provided with a magnet, and the L value is about 27.6 ⁇ H when the magnet is not provided.
- the L value reduction rate is about 65%. That is, the L value and the L value decrease rate are almost the same.
- the substantially rectangular coil of FIG. 10A can reduce the area of the coil by about 15% while achieving almost the same characteristics as the circular coil of FIG. 10B. Further, when mounted on a portable terminal as shown in FIG. 10, the magnetic sheet 52 in FIG. 10A is often the magnetic sheet in FIG. Compared to 52, the area of the magnetic sheet 52 is reduced by about 30% or more.
- the hollow portion is formed into a substantially square coil of 18 mm ⁇ 18 mm, the L-value raw material ratio is considerably reduced to about 56%, and a non-contact charging module having better power transmission efficiency can be obtained. However, this does not reduce the size of the contactless charging module.
- the secondary side coil 21b by which the conducting wire was wound by the substantially rectangular shape, and the magnetic sheet 52 provided with the surface which mounts the flat secondary side coil 21b,
- the secondary side coil 21b The substantially rectangular hollow portion has a short side shorter than the diameter of the circular magnet 30a and a long side longer than the diameter of the circular magnet 30a.
- the secondary side non-contact charging module 42 are either in the case of using or not using the magnet 30a provided in the primary side non-contact charging module 41 which is the counterpart of power transmission. Even when the magnet 30a is used and when the magnet 30a is not used, the change in the L value of the secondary coil 21b provided in the secondary side non-contact charging module 42 is suppressed.
- the secondary-side non-contact charging module 42 can be suitably used in any case of.
- the technique and effect between the secondary side non-contact charging module 42 and the magnet 30a described above are also applied between the primary side non-contact charging module 41 and the magnet 30b.
- the non-contact charging device means an electronic device including a non-contact charging module, a charger including a primary non-contact charging module, a portable terminal including a secondary non-contact charging module, an electronic device, and the like. There are various devices.
- non-contact charging module the electronic device, and the non-contact charging device of the present invention
- a non-contact charging module an electronic device, and a non-contact charging device that achieve stable power transmission efficiency while achieving miniaturization. Therefore, it is useful as a charging device on the transmitting side when charging a portable device such as a mobile phone, a portable audio, a portable computer, a digital camera, or a video camera.
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Abstract
Description
以下、本発明の実施の形態について図面をもちいて説明する。
図1は、本発明の実施の形態における非接触電力伝送機器を示すブロック図である。
次に、1次側非接触充電モジュール41を非接触充電器に搭載する場合について説明する。
次に、2次側非接触充電モジュール42を携帯端末機器に搭載する場合について、説明する。
なお、L値減少率とは、位置合せのために電力伝送相手の非接触充電モジュールにマグネットを用いた場合のL値が、マグネットを用いない場合のL値に対してどの程度の割合かを示す。すなわち、L値減少率が小さいほど、マグネットの影響を受けにくく、どちらの場合においても近いL値とすることができる。また、非接触充電機器とは、非接触充電モジュールを備えた電子機器のことをいい、1次側非接触充電モジュールを備える充電器などや、2次側非接触充電モジュールを備える携帯端末、電子機器など様々である。
21b 2次側コイル
211、212 内側部分
22a、23a 端子(1次側)
22b、23b 端子(2次側)
30a マグネット(1次側)
30b マグネット(2次側)
31a 平坦部(1次側)
31b 平坦部(2次側)
32a 中心部(1次側)
32b 中心部(2次側)
33a 直線凹部(1次側)
33b 直線凹部(2次側)
34a スリット(1次側)
34b スリット(2次側)
41 1次側非接触充電モジュール(送信側非接触充電モジュール)
42 2次側非接触充電モジュール(受信側非接触充電モジュール)
51 磁性シート(1次側)
52 磁性シート(2次側)
71 電力入力部
72 整流回路
82 電力出力部
200 電子機器
300 商用電源
301 コンセント
400 非接触充電器
401 プラグ
402 面
501 机上
520 携帯端末機器
521 液晶パネル
522 操作ボタン
523 基板
524 電池パック(電力保持部)
525、526 筐体
Claims (14)
- 他方の非接触充電モジュールとの位置合わせに際し、前記他方の非接触充電モジュールに備えられた円形のマグネットを利用して位置合わせを行う場合と、前記円形のマグネットを利用しないで位置合わせを行う場合と、のどちらの場合であっても前記他方の非接触充電モジュールと位置合わせ可能な非接触充電モジュールにおいて、
導線が略長方形に巻回された平面コイル部と、
前記平面コイル部を載置する面を備えた磁性シートと、を備え、
前記平面コイル部の略長方形の中空部は、短辺が前記円形のマグネットの直径よりも短く、長辺が前記円形のマグネットの直径よりも長い、
非接触充電モジュール。 - 前記平面コイル部の略長方形の外形は、短辺及び長辺のいずれも前記円形のマグネットの直径よりも長い、
請求項1に記載の非接触充電モジュール。 - 前記磁性シートのうち前記平面コイル部の中空部に面する領域は、前記磁性シートのうち前記平面コイル部の巻回部分を載置する領域に対して凸状である、
請求項1に記載の非接触充電モジュール。 - 前記磁性シートのうち前記平面コイル部の中空部に面する領域と、前記磁性シートのうち前記平面コイル部の巻回部分を載置する領域と、は平坦である、
請求項1に記載の非接触充電モジュール。 - 前記磁性シートのうち前記平面コイル部の中空部に面する領域は、前記磁性シートのうち前記平面コイル部の巻回部分を載置する領域に対して凹状である、
請求項1に記載の非接触充電モジュール。 - 前記磁性シートのうち前記平面コイル部の中空部に対応する領域は、貫通孔である、
請求項1に記載の非接触充電モジュール。 - 前記平面コイル部の略長方形の中空部の四隅のコーナー部は曲線形状に巻回され、前記コーナー部は、前記平面コイル部の略長方形の中空部の各辺の約30%以内の大きさで形成される、
請求項1に記載の非接触充電モジュール。 - 請求項1に記載の非接触充電モジュールと、前記非接触充電モジュールを介して充電される電池を備えた、
電子機器。 - 請求項1に記載の非接触充電モジュールを備えた、
る非接触充電機器。 - 他方の非接触充電モジュールとの位置合わせに際し、前記他方の非接触充電モジュールに備えられた直径が15.5mm以下である円形のマグネットを利用して位置合わせを行う場合と、及び前記円形のマグネットを利用しないで位置合わせを行う場合と、のどちらの場合であっても前記他方の非接触充電モジュールと位置合わせ可能な非接触充電モジュールにおいて、
導線が略長方形に巻回された平面コイル部と、
前記平面コイル部を載置する面を備えた磁性シートと、を備え、
前記平面コイル部の略長方形の中空部は、短辺が15.5mmよりも短く、長辺が15.5mmよりも長い、
非接触充電モジュール。 - 前記平面コイル部の略長方形の外形は、短辺及び長辺のいずれも15.5mmよりも長い、
請求項10に記載の非接触充電モジュール。 - 前記平面コイル部の略長方形の中空部の四隅のコーナー部は曲線形状に巻回され、前記コーナー部は、前記平面コイル部の略長方形の中空部の各辺の約30%以内の大きさで形成される、
請求項10に記載の非接触充電モジュール。 - 請求項10に記載の非接触充電モジュールと、前記非接触充電モジュールを介して充電される電池を備えた、
電子機器。 - 請求項10に記載の非接触充電モジュールを備えた、
非接触充電機器。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CN201280043601.XA CN103782357B (zh) | 2011-09-08 | 2012-08-31 | 电力接收侧非接触充电模块和非接触充电设备 |
KR1020147004842A KR101461549B1 (ko) | 2011-09-08 | 2012-08-31 | 비접촉 충전 모듈 및 비접촉 충전 기기 |
US15/172,001 USRE47199E1 (en) | 2011-09-08 | 2012-08-31 | Non-contact charging module, electronic apparatus, and non-contact charging apparatus |
US14/343,536 US9035605B2 (en) | 2011-09-08 | 2012-08-31 | Non-contact charging module, electronic apparatus, and non-contact charging apparatus |
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JP2011-195819 | 2011-09-08 | ||
JP2011195819A JP4900528B1 (ja) | 2011-09-08 | 2011-09-08 | 非接触充電モジュール及びこれを用いた非接触充電機器 |
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JP (2) | JP4900528B1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
KR20140037968A (ko) | 2014-03-27 |
KR101461549B1 (ko) | 2014-11-13 |
US9035605B2 (en) | 2015-05-19 |
USRE47199E1 (en) | 2019-01-08 |
US20140217970A1 (en) | 2014-08-07 |
CN103782357B (zh) | 2016-03-23 |
JP4900528B1 (ja) | 2012-03-21 |
CN103782357A (zh) | 2014-05-07 |
JP2013059195A (ja) | 2013-03-28 |
JP5942084B2 (ja) | 2016-06-29 |
JP2013058717A (ja) | 2013-03-28 |
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