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WO2015178206A1 - Pastille de transmission d'énergie et système de transmission d'énergie sans contact - Google Patents

Pastille de transmission d'énergie et système de transmission d'énergie sans contact Download PDF

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Publication number
WO2015178206A1
WO2015178206A1 PCT/JP2015/063190 JP2015063190W WO2015178206A1 WO 2015178206 A1 WO2015178206 A1 WO 2015178206A1 JP 2015063190 W JP2015063190 W JP 2015063190W WO 2015178206 A1 WO2015178206 A1 WO 2015178206A1
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WO
WIPO (PCT)
Prior art keywords
power transmission
winding
windings
core
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2015/063190
Other languages
English (en)
Japanese (ja)
Inventor
英介 高橋
大林　和良
拓朗 筒井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
Denso Corp
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Filing date
Publication date
Application filed by Denso Corp filed Critical Denso Corp
Publication of WO2015178206A1 publication Critical patent/WO2015178206A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M7/00—Power lines or rails specially adapted for electrically-propelled vehicles of special types, e.g. suspension tramway, ropeway, underground railway
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • 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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the present invention relates to a power transmission pad having a plate-like core and a plurality of windings, and a non-contact power transmission system having the power transmission pad.
  • This non-contact power feeding device for a moving body includes a winding formed in an oval shape and a magnetic plate-like core in which a concave portion for accommodating the winding is formed on the surface.
  • the present invention has been made in view of these points, and provides a power transmission pad and a non-contact power transmission system that can reduce a leakage electromagnetic field by forming a magnetic flux flowing through a plate-like core smaller than the conventional one.
  • the purpose is to provide.
  • a first invention made to solve the above problems is a plate-like core (21b, 21c, 21d, 21e, 21f, 21g) and a plurality of windings (L1a, L1b, L1c) wound around the plate-like core.
  • L1d, L1e, L1f) and in the power transmission pads (15, 21) used when power is transmitted or received in a non-contact manner, the plate-like cores are magnetic poles (P1, P2), respectively.
  • each of the plurality of convex portions is a side surface portion.
  • the winding is wound so that at least a part of the winding is covered over the entire circumference.
  • the plate-like core having a plurality of convex portions is wound with a winding so that at least a part of the side surface portion of each convex portion is covered over the entire circumference.
  • the plurality of convex portions includes a convex portion on the end side and a convex portion other than the end side.
  • a flow of magnetic flux that draws a circle between adjacent convex portions and a flow of magnetic flux that surrounds the winding wound around the outer side surface portion of the convex portion on the end side are formed.
  • the flow of these magnetic fluxes is smaller than the flow of the magnetic flux which draws a big circle between a convex part and an edge part like a prior art. Therefore, the flow of the magnetic flux flowing through the plate-like core can be made smaller than before, and the leakage electromagnetic field can be reduced.
  • the number of turns (Na, Nb, Nc, Nd, Ne, Nf) of the winding wound around the convex portion on the end side is a first ratio of 0.85 or less with respect to the total number of turns. (Rat1).
  • the leakage electromagnetic field increases rather. Therefore, the leakage electromagnetic field can be made smaller than before by setting the first ratio to 0.85 or less.
  • the number of turns of the winding wound around the convex portion on one end side is the first ratio within the range of 0.4 to 0.6 with respect to the number of turns on the one end side and the center side. It is characterized by.
  • the leakage electromagnetic field can be minimized by setting the first ratio of the number of windings wound around the convex portion on one end side within the range of 0.4 to 0.6. it can.
  • 4th invention connects in series the 1st coil
  • SC1 winding series part
  • SC2 winding series part
  • SC2 second winding series part
  • the first winding series portion and the second winding series portion can suppress the bias of the current flowing through the windings, and the whole is achieved by the parallel connection of the first winding series portion and the second winding series portion.
  • the inductance value can be designed to be small.
  • the 5th invention has a plate-shaped core (21e) and the some coil
  • the plate-shaped core is provided so as to surround the convex portion (21e2) having a predetermined shape which can be the magnetic poles (P1, P2) and the convex portion having the predetermined shape.
  • One or more doughnut-shaped convex portions (21e1), and the convex-shaped portions of the predetermined shape and the donut-shaped convex portions are at least partially covered on the outer peripheral side surface over the entire circumference.
  • the winding is wound as described above.
  • the sixth invention is characterized in that the plurality of windings are all connected in series.
  • a seventh invention provides a power transmission device (200) having power transmission pads (21, 260) provided in a passage of a vehicle (10) and a power transmission control unit (210) that controls electric power output to the power transmission pad and transmitted. ), A power receiving pad (15, 320) provided on the vehicle, and a power receiving control unit (300) for controlling power received by the power receiving pad, the power transmitting pad and the power receiving device (300)
  • the non-contact electric power transmission system (100) which makes a power receiving pad face each other and performs electric power transmission non-contactingly, the power transmission pad according to any one of claims 1 to 16, the power transmitting pad and the power receiving pad. And one or both of them.
  • the leakage electromagnetic field can be reduced and the efficiency of power transmission can be improved.
  • FIG. 5 is a cross-sectional view (transverse cross-sectional view) taken along the arrow VV line shown in FIG. 3.
  • FIG. 4 is a cross-sectional view (longitudinal cross-sectional view) taken along the arrow VI-VI line shown in FIG. 3. It is a figure which shows typically the 1st connection example of a coil
  • FIG. 11 is a cross-sectional view (cross-sectional view) taken along line XII-XII shown in FIG. 10.
  • FIG. 11 is a cross-sectional view (longitudinal cross-sectional view) taken along arrow XIII-XIII shown in FIG. 10.
  • FIG. 15 is a cross-sectional view (cross-sectional view) taken along the line XV-XV shown in FIG.
  • FIG. 14 It is a top view which shows typically the 4th structural example of the pad for electric power transmission. It is the side view seen from the arrow XVII direction shown in FIG.
  • FIG. 18 is a cross-sectional view (cross-sectional view) taken along the line XVIII-XVIII shown in FIG. It is a top view which shows typically the 5th structural example of the pad for electric power transmission. It is the side view seen from the arrow XX direction shown in FIG.
  • FIG. 20 is a cross-sectional view (cross-sectional view) taken along line XXI-XXI shown in FIG. 19. It is a top view which shows typically the 6th structural example of the pad for electric power transmission. It is the side view seen from the arrow XXIII direction shown in FIG.
  • FIG. 23 is a cross-sectional view (cross-sectional view) taken along the line XXIV-XXIV shown in FIG. It is a graph which shows typically the relationship between a leakage electromagnetic field and a 2nd ratio. It is a graph which shows typically the relationship between a leakage electromagnetic field, an end side coil
  • FIG. 31 is a cross-sectional view (cross-sectional view) taken along the line XXXI-XXXI shown in FIG. 30. It is a top view which shows typically the 7th structural example of the pad for electric power transmission.
  • FIG. 33 is a cross-sectional view (cross-sectional view) taken along the line XXXIII-XXXIII shown in FIG. 32. It is a top view which shows typically the 8th structural example of the pad for electric power transmission. It is the side view seen from the arrow XXXV direction shown in FIG.
  • FIG. 35 is a cross-sectional view (cross-sectional view) taken along the line XXXVI-XXXVI shown in FIG. 34.
  • FIG. 38 is a cross-sectional view (cross-sectional view) taken along the line XXXIX-XXXIX shown in FIG. 37. It is a top view which shows typically the 10th structural example of the pad for electric power transmission.
  • FIG. 41 is a cross-sectional view (cross-sectional view) taken along the line XXXXI-XXXXI shown in FIG. 40. It is a schematic diagram which shows the modification of a non-contact electric power transmission system partially. It is a top view which shows typically the 11th structural example of the pad for electric power transmission. It is a top view which shows typically the 12th structural example of the pad for electric power transmission.
  • connection means electrically connecting.
  • FIG. 14 shows elements necessary for explaining the present invention, and does not necessarily show all actual elements.
  • FIG. 16 shows elements necessary for explaining the present invention, and does not necessarily show all actual elements.
  • a vehicle 10 illustrated in FIG. 1 includes a battery 11, a control system 12, a power receiving unit 13, and the like.
  • the battery 11 may be of any type as long as it can store and discharge, for example, a secondary battery such as a lithium ion battery or a lead storage battery.
  • the battery 11 corresponds to a “load”.
  • the control system 12 is a system that controls the entire vehicle 10 and includes, for example, an ECU (Electronic Control Unit), a computer, and the like.
  • the power receiving unit 13 is a power receiving side element that performs non-contact power transmission by mutual induction with the power transmitting unit 20 described later, and includes a power receiving side power converter 14, a power receiving pad 15, and the like.
  • the power-receiving-side power converter 14 corresponding to the control unit performs control such that the power received by the power receiving pad 15 is stored in the battery 11 or transmitted to the control system 12.
  • the power receiving pad 15 corresponds to a “power transmission pad” and includes elements (windings, capacitors, and the like) that perform power transmission without contact.
  • the power transmission unit 20 is a power transmission side element that performs power transmission in a contactless manner by the mutual induction action with the power reception unit 13 described above, and includes a power transmission pad 21, a power transmission side power converter 22, and the like.
  • the power transmission pad 21 corresponds to a “power transmission pad” and includes elements (windings, capacitors, etc.) that perform power transmission in a non-contact manner.
  • the power transmission side power converter 22 corresponding to the control unit receives power supplied from the power source 30 and controls power transmission by the power transmission pad 21.
  • the power transmission unit 20 and the power reception unit 13 described above constitute a non-contact power transmission system 100 shown in FIG.
  • FIG. 2 shows a non-contact power transmission system 110 that is a first configuration example of the non-contact power transmission system 100.
  • the non-contact power transmission system 110 includes a power transmission device 200 corresponding to the power transmission unit 20, a power reception device 300 corresponding to the power reception unit 13, and the like. In this embodiment, an example in which received power is stored in the battery 11 will be described.
  • the power transmission device 200 includes a power transmission side power converter 22 and a power transmission pad 260.
  • the power transmission side power converter 22 includes a power transmission control unit 210, a filter unit 220, a rectification unit 230, a converter 240, an inverter 250, and the like.
  • the power transmission control unit 210 controls the entire power transmission apparatus 200.
  • the power transmission control unit 210 of this embodiment mainly controls the operations of the converter 240 and the inverter 250 individually.
  • the filter unit 220 suppresses the harmonic current generated by the power transmission device 200 from flowing into the power source 30 (backflow).
  • the rectification unit 230 rectifies alternating current into direct current and outputs the direct current.
  • the rectifying unit 230 may include a power factor correction (PFC) circuit in order to improve the power factor.
  • PFC power factor correction
  • Converter 240 is a DC-DC converter that steps up and down the voltage of DC power converted by rectifying unit 230 (ie, DC voltage) in accordance with a command transmitted from power transmission control unit 210.
  • Inverter 250 converts DC power into AC power and outputs it in accordance with a command transmitted from power transmission control unit 210.
  • a voltage output from the converter 240 and input to the inverter 250 is defined as a voltage value Vs.
  • a power transmission pad 260 corresponding to the power transmission pad 21 is provided in the passage of the vehicle 10 and transmits AC power output from the inverter 250 by electromagnetic force.
  • the winding L1 and the capacitor C1 are connected in parallel. Winding L1 and capacitor C1 are set to resonate at a predetermined frequency.
  • the capacitor C1 corresponds to an antenna.
  • the power receiving apparatus 300 includes the power receiving side power converter 14 and the power receiving pad 320.
  • the power reception side power converter 14 includes a power reception control unit 310, a power reception pad 320, a rectification unit 330, a converter 340, a filter unit 350, and the like.
  • the power reception control unit 310 controls the entire power reception apparatus 300.
  • the power reception control unit 310 of this embodiment mainly controls the operation of the converter 340.
  • the power receiving pad 320 corresponding to the power receiving pad 15 receives the power transmitted by the electromagnetic force from the power transmitting pad 260 facing the power receiving pad 320.
  • the winding L2 and the capacitor C2 are connected in parallel.
  • Winding L2 and capacitor C2 are set so as to resonate at the predetermined frequency described above.
  • the capacitor C2 corresponds to an antenna.
  • the rectifier 330 rectifies alternating current into direct current and outputs the direct current.
  • Converter 340 is a DC-DC converter that steps up and down the voltage of DC power converted by rectifying unit 230 (ie, DC voltage) in accordance with a command transmitted from power reception control unit 310.
  • the voltage output from the rectifier 330 and input to the converter 340 is defined as a voltage value Vr.
  • Filter unit 350 reduces the AC component included in the power output from converter 340 and stores it in battery 11.
  • the present invention may be applied to the power receiving pad 15 or the power transmitting pad 21.
  • the case where it applies to the power transmission pad 21 is demonstrated to an example.
  • the direction in which the current flows through the winding L1 of the power transmission pad 21 is set (including switching and control) by the power transmission control unit 210.
  • the 3 to 6 includes a shield plate 21a, a plate core 21b, windings L1a, L1b, L1f, and the like.
  • the shield plate 21a is formed into a flat plate having an arbitrary shape (in this embodiment, a quadrangular shape) larger than the plate-shaped core 21b by a material that shields magnetic flux (such as aluminum).
  • the shield plate 21a is disposed on one side (the lower side in FIGS. 4 to 6) of the plate-like core 21b.
  • the plate-like core 21b is formed of a magnetic material such as ferrite, amorphous, dust core, etc., and has convex portions 21b1, 21b2, 21b4, a base portion 21b3, and the like.
  • the convex portions 21b1, 21b2, and 21b4 arranged in a row are portions that are formed in a convex shape from the base portion 21b3, and are also portions that wind the windings L1a, L1b, and L1f.
  • the convex portions 21b1, 21b2, 21b4 and the base portion 21b3 may be integrally formed as shown in FIGS. 3 to 6, or may be formed separately and then fixed by a fixing portion. Regardless of the type of integral molding, for example, cast molding or work molding may be used. Regardless of the fixing portion, for example, fastening using fastening members (screws, bolts, etc.), joining for welding (arc welding, etc.) by melting the base material, bonding using an adhesive, and the like are applicable.
  • the area of the opposing surfaces (upper surfaces in FIG. 4) of the convex portions 21b1, 21b2, and 21b4 facing the other pad (the power receiving pad 15 in this embodiment) may be arbitrarily set.
  • the convex portions 21b1 and 21b4 are set to the first area S1
  • the convex portion 21b2 is set to the second area S2.
  • it is desirable to set the area ratio to S1: S2 1: 2.
  • a horizontal width or a vertical width may be applied instead of the first area S1 and the second area S2.
  • the end-side convex portions 21b1, 21b4 may be set smaller than the central-side convex portion 21b2.
  • the windings L1a, L1b, and L1f are all covered with an insulating film, and are, for example, conductor wires (electric wires) such as copper wires and litz wires. A single long conductor wire may be used, or a short conductor wire may be connected to form a single conductor wire. As shown in FIGS. 3 and 4, the winding L1a is wound around the side surface of the convex portion 21b1. Winding L1b is wound around the side surface of convex portion 21b2. Winding L1f is wound around the side part of convex part 21b4.
  • Each of the rolled convex portions 21b1, 21b2, and 21b4 is covered with the windings L1a, L1b, and L1f over the entire circumference of each side surface portion (entire surface or partial surface).
  • a part of the windings L1a, L1b, and L1f may be wound around the side surfaces of the first core portions 21c1, 21c2, and 21c4 in the same manner as the winding methods shown in FIGS.
  • the direction in which the winding is wound around each of the convex portions 21b1, 21b2, 21b4 is not limited.
  • the windings L1a and L1f are wound in the direction of arrow D1 (counterclockwise), and the winding L1b is wound in the direction of arrow D2 (clockwise).
  • magnetic poles P1 and P2 in which the magnetic flux flows alternately in the convex portions 21b1, 21b2, and 21b4 are generated.
  • the windings L1a, L1b, and L1f may all be wound in the same direction.
  • a current is supplied to the end windings L1a and L1f in the direction of the arrow D1 and a current is supplied to the center winding L1b in the direction of the arrow D2, the same magnetic poles as the magnetic poles P1 and P2 are generated.
  • a current may flow in the direction opposite to the arrows D1 and D2 shown in the figure.
  • a magnetic flux ⁇ 1 is generated around the winding L1a on the left end side
  • a magnetic flux ⁇ 2 is generated in a portion where the windings L1a and L1b are adjacent
  • a winding L1b and L1f is in a portion where the windings L1b and L1f are adjacent.
  • a magnetic flux ⁇ 3 is generated, and a magnetic flux ⁇ 4 is generated around the winding L1f on the right end side.
  • magnetic fluxes ⁇ 5 and ⁇ 6 are generated around the winding L1f at the upper end side and the lower end side, and similar magnetic fluxes are generated at the windings L1a and L1b at the end side (not shown).
  • the direction of the magnetic flux also changes depending on the direction in which the current flows.
  • the windings L1a, L1b, L1f may be connected arbitrarily, and examples of connection are shown in FIGS.
  • the parallel connection winding Lp shown in FIG. 7 corresponds to the windings L1 and L2, and corresponds to the first winding series portion SC1 and the second winding series portion SC2 that connect the winding L1a and the winding L1f in series.
  • the winding L1b is connected in parallel.
  • the bias of the current flowing through the windings L1a and L1f and the winding L1b can be suppressed to be small, and the overall inductance value can be designed to be small.
  • the windings L1 and L2 corresponds to the windings L1 and L2, and the windings L1a, L1b, and L1f are connected in series.
  • the current flows equally to all the windings L1a, L1b, and L1f, so that the current bias can be minimized.
  • the winding number Na of the winding L1a, the winding number Nb of the winding L1b, and the winding number Nf of the winding L1f may be arbitrarily set.
  • the first rate Rat1 may be set to a range of turns that is equal to or less than the base leakage electromagnetic field Em1.
  • a base leakage electromagnetic field Em1 indicated by a one-dot chain line is a leakage electromagnetic field E generated when only the winding L1b on the center side is wound.
  • the presence of the windings L1a and L1f can suppress the leakage electromagnetic field E of the power transmission pad 21A to 1/3 or less.
  • it is desirable to set the number of turns Na and the number of turns Nf to the same number (Na Nf).
  • characteristic lines indicated by bold lines in FIG. 9 are merely examples, and may vary depending on the material and winding method of the windings L1a, L1b, and L1f. For this reason, after obtaining the characteristic line, it is preferable to set the number of turns within the base leakage electromagnetic field Em1 or less.
  • a power transmission pad 21B shown in FIG. 10 is a configuration example instead of the power transmission pad 21A shown in FIG.
  • the power transmission pad 21B includes a shield plate 21a, a plate-like core 21c, windings L1a, L1b, L1f, and the like.
  • the plate-like core 21c is formed of the same magnetic material as the plate-like core 21b, and includes first core portions 21c1, 21c2, 21c4, a second core portion 21c3, and the like.
  • the first core portions 21c1, 21c2, and 21c4 arranged in a row are portions that are formed so as to partially overlap the second core portion 21c3, and are also portions that wind the windings L1a, L1b, and L1f. .
  • the second core portion 21c3 is formed slightly smaller than the entire first core portions 21c1, 21c2, and 21c4.
  • the first core portions 21c1, 21c2, 21c4 and the second core portion 21c3 may be integrally formed as shown in FIGS. 10 to 13, or may be formed separately and then fixed by a fixing portion.
  • the plate-like core 21c is different from the plate-like core 21b shown in FIG. 3 in the arrangement of the first core portions 21c1, 21c2, 21c4 and the second core portion 21c3.
  • the plate-like core 21b has a structure in which the end surfaces of the convex portions 21b1 and 21b4 on the end side are matched with the end surface of the base portion 21b3.
  • the plate-shaped core 21c has a structure in which the end surfaces of the first core portions 21c1 and 21c4 on the end side protrude from the end surface of the second core portion 21c3, and a gap is formed between the plate-shaped core 21c and the shield plate 21a.
  • the area of the opposing surface (upper surface in FIG. 11) of the first core portions 21c1, 21c2, and 21c4 facing the other pad (the power receiving pad 15 in this embodiment) may be arbitrarily set.
  • the first core portions 21c1 and 21c4 are set to the first area S3, and the first core portion 21c2 is set to the second area S4.
  • it is desirable to set the area ratio to S3: S4 1: 2.
  • a horizontal width or a vertical width may be applied instead of the first area S3 and the second area S4.
  • the first core portions 21c1 and 21c4 on the end side may be set smaller than the first core portion 21c2 on the center side.
  • Winding L1a, L1b, and L1f shown in FIG. 11 are different from the winding method shown in FIG.
  • Winding L1a is wound through a gap between first core portion 21c1 and shield plate 21a and one side surface (right end surface in FIG. 11) of first core portion 21c1 facing first core portion 21c2.
  • the winding L1b is wound through the gap between the first core portion 21c2 and the shield plate 21a and the side surfaces (left and right end surfaces in FIG. 11) of the first core portion 21c2 facing the first core portions 21c1 and 21c4, respectively.
  • Winding L1f is wound through a gap between first core portion 21c4 and shield plate 21a and one side surface (left end surface in FIG.
  • first core portion 21c4 facing first core portion 21c2.
  • the other side surface (the left end face in FIG. 11) of the first core portion 21c1 and the end face of the winding L1a can be matched.
  • the winding L1f When the number of windings is small, the leakage electromagnetic field E is suppressed to be lower because it can be accommodated in the gap with the shield plate 21a so as not to protrude from the end faces of the first core portions 21c1 and 21c4.
  • the direction in which the winding is wound around each of the first core portions 21c1, 21c2, and 21c4 is not limited. It may be wound in the same direction as the windings L1a, L1b, and L1f shown in FIG. 3, or may be wound in a direction different from that shown in FIG. 3 (including the case where they are all wound in the same direction).
  • magnetic poles P1 and P2 in which the direction in which the magnetic flux flows are alternately changed in the first core portions 21c1, 21c2, and 21c4 are generated.
  • a magnetic flux ⁇ 11 is generated around the winding L1a on the left end side
  • a magnetic flux ⁇ 12 is generated at a site where the windings L1a and L1b are adjacent
  • a winding L1b and L1f is generated at a site where they are adjacent.
  • a magnetic flux ⁇ 13 is generated
  • a magnetic flux ⁇ 14 is generated around the winding L1f on the right end side.
  • magnetic fluxes ⁇ 15 and ⁇ 16 are generated around the winding L1f on the upper end side and the lower end side, and similar magnetic fluxes are generated on the windings L1a and L1c on the end side (not shown).
  • the direction of the magnetic flux also changes depending on the direction in which the current flows.
  • connection of the windings L1a, L1b, and L1f and the first ratio Rat1 of the number of turns may be set in the same manner as in the first embodiment (see FIGS. 7 to 9).
  • the third embodiment is a modification of the first embodiment and will be described with reference to FIGS.
  • the same elements as those used in the first and second embodiments are denoted by the same reference numerals and description thereof is omitted.
  • a power transmission pad 21C shown in FIG. 14 is a configuration example that replaces the power transmission pad 21A shown in FIG.
  • the power transmission pad 21C includes a shield plate 21a, a plate-like core 21d, windings L1a to L1f, and the like.
  • the plate-shaped core 21d is formed of the same magnetic material as the plate-shaped core 21b, and has convex portions 21d1, 21d2, 21d4, 21d5, 21d6, a base portion 21d3, and the like.
  • the convex portions 21d1 to 21d6 arranged in a row are portions that are formed in a convex shape from the base portion 21d3, and are also portions that wind the windings L1a to L1f, respectively.
  • the convex portions 21d1, 21d2, 21d4, 21d5, 21d6 and the base portion 21d3 may be integrally formed as shown in FIGS. 14 and 15, or may be formed separately and then fixed by a fixing portion.
  • the convex portion 21d1 corresponds to the convex portion 21b1 shown in FIG. 3, and the convex portion 21d6 corresponds to the convex portion 21b4 shown in FIG.
  • Each of the convex portions 21d2, 21d4, and 21d5 corresponds to the convex portion 21b2 shown in FIG.
  • the base 21d3 corresponds to the base 21b3 shown in FIG.
  • the plate-like core 21d is different from the plate-like core 21b shown in FIG. 3 in that the convex portions 21d4 and 21d5 and the windings L1c and L1d are increased.
  • the area of the opposing surface (upper surface in FIG. 15) of the convex portions 21d1, 21d2, 21d4, 21d5, 21d6 facing the other pad (the power receiving pad 15 in this embodiment) may be arbitrarily set.
  • the convex portions 21d1, 21d6 are set to the first area S5, and the convex portions 21d2, 21d4, 21d5 are set to the second area S6.
  • it is desirable to set the area ratio to S5: S6 1: 2.
  • a horizontal width or a vertical width may be applied instead of the first area S5 and the second area S6.
  • the end-side convex portions 21d1, 21d6 may be set smaller than the center-side 21d2, 21d4, 21d5.
  • the windings L1c and L1d are all conductor wires that are covered with an insulating film.
  • the winding L1a is wound around the side surface of the convex portion 21d1.
  • Winding L1b is wound around the side part of convex part 21d2.
  • Winding L1c is wound around the side surface of convex portion 21d4.
  • Winding L1d is wound around the side surface of convex portion 21d5.
  • Winding L1f is wound around the side surface of convex portion 21d6.
  • wound convex portions 21d1, 21d2, 21d4, 21d5, and 21d6 are covered with windings L1a, L1b, L1c, L1d, and L1f over the entire circumference of the respective side surfaces (entire surface or partial surface).
  • the windings L1a, L1b, L1c, L1d, and L1f may be arbitrarily connected, and connection examples are as shown in FIGS.
  • the increasing windings L1c and L1d are connected as shown by two-dot chain lines in FIGS. That is, in FIG. 7, the windings L1c and L1d are connected in series with the winding L1b to form the second winding series part SC2.
  • the windings L1c, L1d are connected in series with the windings L1a, L1b, L1f.
  • the direction in which the winding is wound around each of the convex portions 21d1, 21d2, 21d4, 21d5, and 21d6 is not limited. 14 may be wound in the same direction as the windings L1a, L1b, L1c, L1d, and L1f shown in FIG. 14, or may be wound in a direction different from that shown in FIG. When a current is passed along the winding direction shown in FIG. 14, magnetic poles P1 and P2 in which the direction in which the magnetic flux flows alternately are generated at the convex portions 21d1, 21d2, 21d4, 21d5, and 21d6.
  • Magnetic flux ⁇ 22 is generated at a site where the windings L1a and L1b are adjacent to each other.
  • Magnetic flux ⁇ 23 is generated at a site where the windings L1b and L1c are adjacent to each other.
  • a magnetic flux ⁇ 24 is generated at a site where the windings L1c and L1d are adjacent to each other.
  • Magnetic flux ⁇ 25 is generated at a site where the windings L1d and L1f are adjacent to each other.
  • a magnetic flux ⁇ 26 is generated around the winding L1f on the right end side.
  • the same magnetic flux is generated in the windings L1a, L1b, L1c, L1d, and L1f at the end side (see FIGS. 6 and 13).
  • the direction of the magnetic flux also changes depending on the direction in which the current flows.
  • the winding number Na of the winding L1a, the number Nb of the winding L1b, the number Nc of the winding L1c, the number Nd of the winding L1d, and the number Nf of the winding L1f may be arbitrarily set.
  • the range of the first ratio Rat1 desirable for setting is the same as in the first embodiment.
  • the plate-shaped core 21d of this embodiment is configured to include three convex portions 21d2, 21d4, and 21d5 on the center side (see FIG. 14). It may replace with this form and you may set the convex-shaped part with which a center side is provided by other number. Other numbers correspond to two or four or more, and odd numbers are desirable. Moreover, it is good also as a structure which arrange
  • Embodiment 4 The fourth embodiment will be described with reference to FIGS. For simplicity of illustration and description, unless otherwise specified, the same elements as those used in Embodiments 1 to 3 are denoted by the same reference numerals and description thereof is omitted.
  • a power transmission pad 21D1 shown in FIG. 16 is a configuration example that replaces the power transmission pad 21A shown in FIG.
  • the power transmission pad 21D1 includes a shield plate 21a, a plate-like core 21e, a plurality of windings (windings L1a and L1b in this example), and the like.
  • the shield plate 21a is formed into a flat plate having an arbitrary shape (circular shape in this embodiment) larger than the plate-shaped core 21e by a material that shields magnetic flux.
  • the plate-shaped core 21e is formed of the same magnetic material as the plate-shaped core 21b, and has convex portions 21e1, 21e2, a base portion 21e3, and the like.
  • the convex portion 21e2 is disposed at the center of the plate-shaped core 21e and is formed into a predetermined shape (circular shape in this embodiment).
  • the convex portion 21e1 is formed so as to surround the convex portion 21e2 and is formed into a donut shape that can serve as a magnetic pole.
  • the convex portions 21e1 and 21e2 are both portions that are formed in a convex shape from the base portion 21e3, and are also portions that wind the windings L1a and L1b.
  • the convex portions 21e1, 21e2 and the base portion 21e3 may be integrally formed as shown in FIGS. 16 to 18, or may be formed separately and then fixed by a fixing portion.
  • “Doughnut shape” in the present specification means a shape like a torus body, and a cross-sectional shape or a three-dimensional shape may be arbitrarily set regardless of the presence or absence of unevenness.
  • the torus body has a shape composed of a closed curved surface (with or without a flat surface) having a genus of 1.
  • the mathematical term genus is an integer that represents the maximum number of cuts along a simple closed curve such that the manifold remains connected.
  • the area of the opposing surfaces (upper surface in FIG. 17) of the convex portions 21e1 and 21e2 that oppose the other pad (the power receiving pad 15 in this embodiment) may be arbitrarily set.
  • the convex portion 21e1 is set to the first area S7
  • the convex portion 21e2 is set to the second area S8.
  • it is desirable to set the area ratio to S7: S8 1: 2.
  • a diameter may be applied instead of the first area S7 and the second area S8.
  • the end-side convex portion 21e1 may be set smaller than the center-side 21e2.
  • the winding L1a is wound around the outer peripheral surface portion (side surface portion) of the convex portion 21e1.
  • the winding L1b is wound around the outer peripheral surface portion of the convex portion 21e2.
  • Each of the rolled convex portions 21e1 and 21e2 is covered with the windings L1a and L1b over the entire circumference on the respective outer peripheral surface portions (entire surface or partial surface).
  • the windings L1a and L1b may be connected in parallel (see FIG. 7) or in series (see FIG. 8).
  • the direction in which the winding is wound around each of the convex portions 21e1 and 21e2 is not limited. 16 may be wound in the same direction as the windings L1a and L1b shown in FIG. 16, or may be wound in a direction different from that in FIG. 16 (including the case of winding all in the same direction).
  • magnetic poles P1 and P2 having different magnetic flux directions are generated in the convex portions 21e1 and 21e2.
  • the number of turns Na of the winding L1a and the number of turns Nb of the winding L1b may be set arbitrarily.
  • the range of the first ratio Rat1 desirable for setting is the same as in the first embodiment.
  • the fifth embodiment is a modification of the fourth embodiment, and will be described with reference to FIGS.
  • the same elements as those used in Embodiments 1 to 4 are denoted by the same reference numerals and description thereof is omitted.
  • FIG. 19 is a top view, the site
  • a power transmission pad 21D2 shown in FIGS. 19 to 21 is a configuration example instead of the power transmission pad 21A shown in FIG. 3, and is a modification of the power transmission pad 21D1 shown in FIG.
  • the power transmission pad 21D2 includes a shield plate 21a, a plate-like core 21e, windings L1a and L1b, and the like.
  • the power transmission pad 21D2 is different from the power transmission pad 21D1 shown in FIG. 16 in that the base 21e3 of the plate core 21e extends and is provided along a predetermined surface.
  • the predetermined surface corresponds to the contact surface with the shield plate 21a (the upper surface of the shield plate 21a in FIGS. 20 and 21), and corresponds to the installation surface of the power transmission pad 21D2 when there is no shield plate 21a.
  • the winding L1a is in contact with the plate-like core 21e on two surfaces (specifically, each surface of the convex portion 21e1 and the base portion 21e3).
  • the winding L1a is wound so that the center line has an inner diameter Ra
  • the winding L1b is wound so that the center line has an inner diameter Rb.
  • the inner diameter Ra and the inner diameter Rb both correspond to the diameter and radius, and may be set to arbitrary values.
  • the ratio (inner diameter ratio) set to suppress the leakage electromagnetic field E will be described later (see FIG. 25).
  • the third area Sa is determined based on the inner diameter Ra
  • the fourth area Sb is determined based on the inner diameter Rb (see FIGS. 19 and 21).
  • a power transmission pad 21D3 illustrated in FIGS. 22 to 24 is a configuration example that replaces the power transmission pad 21A illustrated in FIG. 3, and is a modification of the power transmission pad 21D1 illustrated in FIG.
  • the power transmission pad 21D3 includes a shield plate 21a, a plate-like core 21e, windings L1a and L1b, and the like.
  • the power transmission pad 21D3 extends so that the base portion 21e3 of the plate-shaped core 21e extends along a predetermined surface, and is provided with a donut-shaped convex portion 21e4 like the convex portion 21e1. This is different in particular (see FIG. 23 in particular).
  • the predetermined surfaces and the inner diameters Ra and Rb are the same as in the first modification described above.
  • the winding L1a is in contact with the plate-like core 21e on three surfaces (specifically, each surface of the convex portion 21e1, the base portion 21e3, and the convex portion 21e4). As shown in FIG. 22, the winding L1a appears to be sandwiched between the convex portion 21e1 and the convex portion 21e4.
  • Rat2 Ra / (Ra + Rb)
  • Rat2 Rb / (Ra + Rb)
  • the second ratio Rat2 may be arbitrarily set within the range of the inner diameter that is equal to or less than the base leakage electromagnetic field Em2.
  • a base leakage electromagnetic field Em2 indicated by a one-dot chain line is a leakage electromagnetic field E generated when only the winding L1b on the center side is wound.
  • the maximum ratio Rm2 (0.8 in FIG. 25) indicated by the alternate long and short dash line is preferably set to be less than or equal to 0.8. Particularly, when the value is set within the range of 0.4 to 0.7, the leakage electromagnetic field E is minimized. It can be suppressed. The presence of the base portion 21e3 and the convex portion 21e4 can suppress the leakage electromagnetic field E of the power transmission pad 21A to 1/3 or less.
  • the characteristic lines indicated by bold lines in FIG. 25 are merely examples, and may vary depending on the material and winding method of the windings L1a and L1b. Therefore, it is preferable to set the inner diameters Ra and Rb (the third area Sa and the fourth area Sb) that are equal to or less than the base leakage electromagnetic field Em2 after obtaining the characteristic line.
  • FIG. 26 shows a variation example of the leakage electromagnetic field E depending on the presence / absence of the winding L1a corresponding to the end-side winding and the presence / absence of the convex portion 21e4 corresponding to the end-side core.
  • the leakage electromagnetic field E when there is no winding L1a and no convex portion 21e4 is defined as an electromagnetic field value E3.
  • the leakage electromagnetic field E becomes an electromagnetic field value E2 lower than the electromagnetic field value E3 (E2 ⁇ E3).
  • the convex portion 21e4 is provided like the power transmission pad 21D3
  • the leakage electromagnetic field E becomes an electromagnetic field value E1 lower than the electromagnetic field value E2 (E1 ⁇ E2). Accordingly, the leakage electromagnetic field E accompanying the energization of the windings L1a and L1b can be further suppressed.
  • FIG. 27 shows a connection example in which the winding L1a is short-circuited on the left side, and a connection example in which the winding L1b is short-circuited on the right side. Regardless of which connection is made, the winding L1a and the winding L1b are magnetically coupled.
  • the switching unit 22 a may be provided in the power transmission side power converter 22 as illustrated in FIG. 27, or may be provided separately from the power transmission side power converter 22. Although not shown, the parallel connection shown in FIG. 7, the serial connection shown in FIG. 8, and the short-circuit connection shown in FIG. 27 may be switched by the switching unit 22a.
  • the power transmission side power converter 22 may implement the following modes (including control) when the leakage electromagnetic field E is lower than a reference value defined in a predetermined standard.
  • a current is passed through one of the plurality of windings L1a and L1b. This includes a case where one of the windings L1a and L1b shown in FIG.
  • the current flows through the plurality of windings L1a and L1b in the same direction.
  • Predetermined standards are, for example, standards established by IEC (International Electrotechnical Commission), standards created by ISO (International Organization for Standardization), JIS (Japanese Industrial Standards) Industrial standards).
  • the “reference value” is a value set to comply with the predetermined standard.
  • FIG. 28 shows a change example of the leakage electromagnetic field E depending on the presence / absence of the winding L1a and whether or not the winding L1a is short-circuited.
  • the leakage electromagnetic field E when there is no winding L1a is defined as an electromagnetic field value E5.
  • the leakage electromagnetic field E becomes an electromagnetic field value E4 lower than the electromagnetic field value E5 (E4 ⁇ E5). Accordingly, the leakage electromagnetic field E accompanying the energization of the windings L1a and L1b can be further suppressed.
  • FIG. 29 is a flowchart showing a control example related to energization to the plurality of windings (that is, the windings L1a and L1b) shown in the first and second modifications.
  • This control example is realized by, for example, the power transmission side power converter 22 (specifically, the power transmission control unit 210) shown in FIGS.
  • step ST1 it is determined whether or not the leakage electromagnetic field E is lower than a reference value defined in a predetermined standard [step ST1].
  • the leakage electromagnetic field E is measured by the electromagnetic field sensor ES or estimated according to the following equation (a).
  • the electromagnetic field sensor ES is disposed in the vicinity of the power transmission pad 21 as indicated by a two-dot chain line in FIGS. 19 and 22, and transmits the measured leakage electromagnetic field E to the power transmission side power converter 22.
  • the output of the power receiving pad 15 is “Pout”
  • the coupling coefficient between the winding L1 of the power transmitting pad 21 and the winding L2 of the power receiving pad 15 is “k”
  • the coil constant (for example, inductance) of the winding L2 Etc.) is “ ⁇ ”.
  • the output Pout can be obtained by the product of the voltage generated in the winding L2 and the current flowing through the winding L2.
  • leakage electromagnetic field E is lower than the reference value defined in the predetermined standard (YES)
  • current is passed through one of the plurality of windings (first form), or Current is passed through all windings in the same direction (second embodiment) [step ST2].
  • the other winding may be opened, or the other winding may be short-circuited as shown in FIG.
  • step ST1 if the leakage electromagnetic field E is not less than the reference value defined in the predetermined standard (NO in step ST1), the end side winding (eg, winding L1a) and the winding other than the end side (eg, winding L1b) Branches depending on whether or not they are wound in opposite directions [step ST3].
  • This branch is selected from among steps ST4 and ST5 to be executed before product shipment, pre-installed in a program, inquired, or selected based on a switch or data.
  • step ST4 If the end side winding and the windings other than the end side are wound in opposite directions (YES), a current is passed along the winding direction [step ST4]. On the other hand, if the end side winding and the windings other than the end side are wound in the same direction (NO in step ST3), currents flow in opposite directions between the adjacent windings [step ST5. ].
  • the leakage electromagnetic field E accompanying energization of the plurality of windings can be suppressed to be lower than the reference value defined in a predetermined standard.
  • Embodiment 6 The sixth embodiment is a modification of the fourth and fifth embodiments, and will be described with reference to FIGS. For simplicity of illustration and description, unless otherwise specified, the same elements as those used in Embodiments 1 to 5 are denoted by the same reference numerals and description thereof is omitted.
  • a power transmission pad 21D4 illustrated in FIGS. 30 and 31 is a configuration example instead of the power transmission pad 21A illustrated in FIG. 3 and a modification of the power transmission pad 21D1 illustrated in FIG.
  • the power transmission pad 21D4 includes a shield plate 21a, a plate-like core 21e, windings L1a and L1b, and the like.
  • the power transmission pad 21D4 is different from the power transmission pad 21D1 shown in FIG. 16 in that passages 21ea and 21eb are further provided in the plate core 21e.
  • the passage 21ea is a part where a part of the convex part 21e1 (upper part in FIG. 31) is recessed in order to arrange the connection line CW.
  • the passage 21eb is a hole that penetrates a part of the convex portion 21e1 in order to pass the connection line CW.
  • the passages 21ea and 21eb need only be large enough to pass the connection line CW.
  • connection line CW is a conductor line for connecting the power transmission side power converter 22 (see FIGS. 2 and 27) and the windings L1a and L1b.
  • the connection line CW may be a conductor line separate from the windings L1a and L1b, or may be a part of the windings L1a and L1b drawn from the convex portion 21d4.
  • the third modification is appropriate when the windings L1a and L1b are connected in series as shown in FIG.
  • the present invention can also be applied to the case where the windings L1a and L1b are connected in parallel as shown in FIG. 7 and the case where one of the windings L1a and L1b is short-circuited as shown in FIG.
  • the power transmission pad 21D4 can have a predetermined surface (upper surface in FIG. 31) formed in a planar shape.
  • a power transmission pad 21D5 illustrated in FIGS. 32 and 33 is a configuration example instead of the power transmission pad 21A illustrated in FIG. 3 and a modification of the power transmission pad 21D1 illustrated in FIG.
  • the power transmission pad 21D5 includes a shield plate 21a, a plate-like core 21e, windings L1a and L1b, and the like.
  • the power transmission pad 21D5 is different from the power transmission pad 21D1 shown in FIG. 16 in that a passage 21ec is further provided in the plate core 21e.
  • the passage 21ec is a hole provided in a part of the plate-like core 21e (base 21e3 shown in FIG. 17) in order to arrange the connection line CW.
  • the passage 21ec need only be large enough to pass the connection line CW, like the passages 21ea and 21eb described above.
  • the fourth modification is appropriate when one of the windings L1a and L1b is short-circuited as shown in FIG.
  • the present invention is also applicable to the case where the windings L1a and L1b are connected in parallel as shown in FIG. 7 and the case where the windings L1a and L1b are connected in series as shown in FIG.
  • the power transmission pad 21D5 can have a predetermined surface (upper surface in FIG. 33) formed in a planar shape.
  • the third modification and the fourth modification can be applied to the power transmission pad 21D2 shown in FIG. 19 and the power transmission pad 21D3 shown in FIG.
  • the energization control process shown in FIG. 29 can be applied to the third modification and the fourth modification, respectively.
  • Embodiment 7 The seventh embodiment will be described with reference to FIGS. 34 to 36.
  • FIG. For simplicity of illustration and description, unless otherwise specified, the same elements as those used in Embodiments 1 to 6 are denoted by the same reference numerals and description thereof is omitted.
  • the shield plate 21a is formed into a flat plate having an arbitrary shape (in this embodiment, a quadrangular shape) larger than a combination of the split cores 21f and 21g by a material that shields magnetic flux.
  • the split cores 21f and 21g correspond to “plate cores”. Each of the split cores 21f and 21g is formed of the same magnetic material as that of the plate core 21b, and may have the same shape or a different shape.
  • the split core 21f has convex portions 21f1, 21f2, a base portion 21f3, and the like.
  • the convex portions 21f1 and 21f2 arranged in a row are both formed in a convex shape from the base portion 21f3.
  • the split core 21g has convex portions 21g1, 21g2, a base portion 21g3, and the like.
  • the convex portions 21g1 and 21g2 arranged in a row are both formed into a convex shape from the base portion 21g3.
  • the convex portion 21f1 is also a portion around which the winding L1a is wound.
  • the convex portion 21f2 and the convex portion 21g1 are also portions that wind the winding L1b.
  • the convex portion 21g2 is also a portion around which the winding L1f is wound.
  • the convex portions 21f1, 21f2 and the base portion 21f3 may be integrally formed as shown in FIGS. 34 to 36, or may be formed separately and then fixed by a fixing portion. The same applies to the convex portions 21g1, 21g2 and the base portion 21g3.
  • the direction in which the winding is wound is not limited to the convex portions 21f1, 21f2, 21g1, 21g2. 34 may be wound in the same direction as windings L1a, L1b, and L1f shown in FIG. 34, or may be wound in a direction different from that shown in FIG. 34 (including a case where all windings are wound in the same direction).
  • magnetic poles P1 and P2 having different magnetic flux directions are generated in the convex portions 21f1 and 21f2.
  • magnetic poles P1 and P2 having different magnetic flux directions are generated in the convex portions 21g1 and 21g2.
  • a magnetic flux ⁇ 41 is generated around the winding L1a on the left end side
  • a magnetic flux ⁇ 42 is generated in the split core 21f adjacent to the windings L1a and L1b
  • the windings L1a and L1b are
  • a magnetic flux ⁇ 43 is generated in the split core 21g in the adjacent portion
  • a magnetic flux ⁇ 44 is generated around the winding L1f on the right end side.
  • the direction of the magnetic flux also changes depending on the direction in which the current flows.
  • connection of the windings L1a, L1b, and L1f and the first ratio Rat1 of the number of turns may be set in the same manner as in the first embodiment (see FIGS. 7 to 9).
  • Embodiment 8 will be described with reference to FIGS. For simplicity of illustration and description, unless otherwise specified, the same elements as those used in Embodiments 1 to 7 are denoted by the same reference numerals and description thereof is omitted.
  • the shield plate 21a is formed into a flat plate having an arbitrary shape (in this embodiment, a quadrangular shape) larger than a combination of the split cores 21h and 21i by a material that shields magnetic flux.
  • the split cores 21h and 21i are each formed of the same magnetic material as the plate-shaped core 21b, and may have the same shape or different shapes.
  • the split core 21h has convex portions 21h1, 21h2, a base portion 21h3, and the like.
  • the convex portions 21h1, 21h2 arranged in a row are both formed from the base portion 21h3 in a convex shape, and are also portions where the windings L1a, L1b are wound.
  • the split core 21i has convex portions 21i1, 21i2, a base portion 21i3, and the like.
  • the convex portions 21 i 1 and 21 i 2 arranged in a row are both formed from the base portion 21 i 3 in a convex shape, and are also portions where the windings L 1 c and L 1 f are wound.
  • the convex portions 21h1, 21h2 and the base portion 21h3 may be integrally formed as shown in FIGS. 37 to 39, or may be formed separately and then fixed by a fixing portion. The same applies to the convex portions 21i1, 21i2 and the base portion 21i3.
  • the windings L1a, L1b, L1c, and L1f may be arbitrarily connected, and connection examples are as shown in FIGS.
  • the increasing number of windings L1c is connected as shown by a two-dot chain line in FIGS. That is, in FIG. 7, the winding L1c is connected in series with the winding L1b to form the second winding series portion SC2. In FIG. 8, the winding L1c is connected in series with the windings L1a, L1b, and L1f.
  • the direction in which the winding is wound is not limited to the convex portions 21h1, 21h2 and the convex portions 21i1, 21i2.
  • 37 may be wound in the same direction as the windings L1a, L1b, L1c, and L1f shown in FIG. 37, or may be wound in a direction different from that shown in FIG. 37 (including a case where they are all wound in the same direction).
  • magnetic poles P1 and P2 having different magnetic flux directions are generated in the convex portions 21h1 and 21h2.
  • magnetic poles P1 and P2 having different magnetic flux directions are generated at the convex portions 21i1 and 21i2.
  • the split core 21h where the windings L1a and L1b are adjacent to each other and the split core 21i where the windings L1c and L1f are adjacent are adjacent to each other with magnetic fluxes in opposite directions. Canceled to occur.
  • the winding number Na of the winding L1a, the winding number Nb of the winding L1b, the winding number Nc of the winding L1c, and the winding number Nf of the winding L1f may be arbitrarily set.
  • the range of the first ratio Rat1 desirable for setting is the same as in the first embodiment.
  • the ninth embodiment is a modification of the eighth embodiment, and will be described with reference to FIGS.
  • the same elements as those used in Embodiments 1 to 8 are denoted by the same reference numerals and description thereof is omitted.
  • a power transmission pad 21G shown in FIG. 40 is a configuration example that replaces the power transmission pad 21F shown in FIG.
  • the power transmission pad 21G includes a shield plate 21a, a plurality of divided cores 21j, 21k, 21m, windings L1a to L1f, and the like.
  • the divided cores 21j, 21k, and 21m correspond to “plate cores”.
  • the divided cores 21j, 21k, and 21m are each formed of the same magnetic material as the plate-shaped core 21b, and may have the same shape or different shapes.
  • the split core 21j has convex portions 21j1, 21j2, a base portion 21j3, and the like.
  • the convex portions 21j1 and 21j2 arranged in a row are both formed from the base portion 21j3 in a convex shape and are wound around the windings L1a and L1b.
  • the split core 21k has convex portions 21k1, 21k2, a base portion 21k3, and the like.
  • the convex portions 21k1 and 21k2 arranged in a row are both formed from the base portion 21k3 in a convex shape and are wound around the windings L1c and L1d.
  • the split core 21m has convex portions 21m1, 21m2, a base portion 21m3, and the like.
  • the convex portions 21m1 and 21m2 arranged in a row are both formed from the base portion 21m3 into a convex shape and are wound around the windings L1e and L1f.
  • the convex portions 21j1, 21j2 and the base portion 21j3 may be integrally formed as shown in FIGS. 40 and 41, or may be formed separately and then fixed by a fixing portion. The same applies to the convex portions 21k1, 21k2 and the base portion 21k3, and the convex portions 21m1, 21m2 and the base portion 21m3.
  • the convex portions 21j1, 21j2 correspond to the convex portions 21h1, 21h2 shown in FIG.
  • the convex portions 21m1, 21m2 correspond to the convex portions 21i1, 21i2 shown in FIG.
  • the split core 21k and the windings L1d and L1e are different.
  • the winding L1e is a conductor wire covered with an insulating film, like the windings L1a, L1b, L1c, L1d, and L1f.
  • the winding L1a is wound around the side surface of the convex portion 21j1.
  • Winding L1b is wound around the side surface of convex portion 21j2.
  • the winding L1c is wound around the side surface of the convex portion 21k1.
  • Winding L1d is wound around the side surface of convex portion 21k2.
  • Winding L1e is wound around the side part of convex-shaped part 21m1.
  • Winding L1f is wound around the side part of convex-shaped part 21m2.
  • the wound convex portions 21j1, 21j2, 21k1, 21k2, 21m1, and 21m2 are covered with the windings L1a to L1f over the entire circumference of the respective side surface portions (entire surface or partial surface).
  • the windings L1a to L1f may be connected arbitrarily, and connection examples are as shown in FIGS.
  • the increasing number of windings L1e is connected as shown by a two-dot chain line in FIGS. That is, in FIG. 7, the winding L1e is connected in series with the windings L1b, L1c, and L1d to form the second winding series part SC2.
  • the winding L1e is connected in series with the windings L1a, L1b, L1c, L1d, and L1f.
  • the direction in which the winding is wound around the convex portions 21j1, 21j2, 21k1, 21k2, 21m1, 21m2 is not limited. 40 may be wound in the same direction as windings L1a to L1f shown in FIG. 40, or may be wound in a direction different from that shown in FIG. 40 (including the case where all are wound in the same direction).
  • magnetic poles P1 and P2 in which the magnetic flux flows alternately in the convex portions 21j1, 21j2, 21k1, 21k2, 21m1, and 21m2 are generated.
  • a split core 21j where the windings L1a and L1b are adjacent, a split core 21k where the windings L1c and L1d are adjacent, and a split where the windings L1d and L1e are adjacent are divided.
  • the core 21m is canceled because magnetic fluxes are generated in opposite directions with adjacent windings.
  • the winding number Na of the winding L1a, the number Nb of the winding L1b, the number Nc of the winding L1c, the number Nd of the winding L1d, the number Ne of the winding L1e, and the number Nf of the winding L1f may be arbitrarily set.
  • the range of the first ratio Rat1 desirable for setting is the same as in the first embodiment.
  • the split cores 21j, 21k, and 21m corresponding to the plate-like cores of the present embodiment are configured to include four convex portions 21j2, 21k1, 21k2, and 21m1 on the center side (see FIG. 40). It may replace with this form and you may set the convex-shaped part with which a center side is provided by other number. Other numbers correspond to 2, 3, or 5 or more, and even numbers are desirable.
  • the number of divided cores does not matter. Moreover, one division
  • the single plate-like cores 21b to 21e and the plate-like cores (21f, 21g, 21h, 21i, 21j, 21k, 21m) made up of a plurality of divided cores are individually provided. (See FIGS. 3, 10, 14, 16, 34, 37, and 40).
  • two or more plate-like cores shown in Embodiments 1 to 9 may be arbitrarily combined to constitute one plate-like core.
  • the combination of the plate-like core 21b shown in FIG. 3 and the plate-like core 21c shown in FIG. 10 the combination of the plate-like core 21d shown in FIG. 14 and the divided cores 21f and 21g shown in FIG. Since the plate cores are simply combined, the same effect as the embodiment corresponding to the combined plate cores can be obtained.
  • a radio wave system in which a current is converted into an electromagnetic wave and transmitted / received via an antenna is applied (see FIGS. 1 and 2).
  • an electromagnetic induction method using electromagnetic induction in which an electromotive force is generated in the other adjacent one through the magnetic flux generated when a current is passed through one of the two adjacent windings L1 and L2 is applied.
  • an electromagnetic field resonance method using an electromagnetic field resonance phenomenon may be applied. Any of the systems can perform power transmission in a non-contact manner by mutual inductive action, so that the same effects as those of the first to ninth embodiments can be obtained.
  • the winding L1 and the capacitor C1 are connected in parallel, and the winding L2 and the capacitor C2 are connected in parallel (see FIG. 2).
  • the winding L1 and the capacitor C1 may be connected in series, and the winding L2 and the capacitor C2 may be connected in series.
  • the winding L1 and the capacitor C1 may be connected in series, the winding L2 and the capacitor C2 may be connected in parallel, the winding L1 and the capacitor C1 are connected in parallel, and the winding L2 and the capacitor C2 are connected in series. It is good also as composition to do.
  • a data group (for example, a map or a table) may be recorded on a recording medium (for example, a flash memory, a hard disk, an optical disk, etc.) according to the connection form. .
  • the recording medium is provided outside of the power transmission control unit 210, the power reception control unit 310, or the non-contact power transmission system 100 connected to be communicable (for example, the control system 12 illustrated in FIG. 1 or an external device such as an ECU). May be. Since only the connection form of the winding and the capacitor is different, the same effect as in the first to ninth embodiments can be obtained.
  • the power transmission pads 21A to 21G are applied as the power transmission pad 21 (FIGS. 1, 2, 3, 10, 14, 16, 16, 34, 37, and 37). (See FIG. 40).
  • the power transmission pads 21A to 21G may be applied as the power reception pad 15, or may be applied to both the power reception pad 15 and the power transmission pad 21.
  • the direction in which the current flows through the winding L2 of the power receiving pad 15 is set (including switching and control) by the power receiving control unit 310. Since the target to be applied is only different, the same effects as those of the first to ninth embodiments can be obtained.
  • the battery 11 is applied as a load (see FIG. 1). It replaces with this form and you may apply the other apparatus (regardless of whether it equips with the vehicle 10) which act
  • the above-described third embodiment is configured as a modification of the first embodiment (see FIGS. 14 and 15).
  • a modification similar to the third embodiment with respect to the second embodiment may be performed similarly to the modification of the third embodiment with respect to the first embodiment.
  • the convex portions 21d1, 21d2, 21d4, 21d5, and 21d6 shown in FIG. 14 are configured as the first core portions 21c1, 21c2, and 21c4 shown in FIG. 10, and the base portion 21d3 is the second shown in FIG.
  • the core portion 21c3 is configured.
  • the windings L1a and L1f shown in FIG. 14 perform the same winding as the windings L1a and L1f shown in FIG.
  • the windings L1b, L1c, and L1d shown in FIG. 14 are all wound in the same manner as the winding L1b shown in FIG. Even if comprised in this way, the effect similar to Embodiment 2, 3 is acquired.
  • a circular shape is applied as the predetermined shape of the convex portion 21e2 (see FIGS. 1 and 2).
  • a shape other than the circular shape may be applied.
  • Other shapes correspond to, for example, a rectangular shape such as the power transmission pad 21D6 illustrated in FIG. 43, a hexagonal shape such as the power transmission pad 21D7 illustrated in FIG.
  • a polygonal shape or an elliptical shape other than a rectangular shape or a hexagonal shape may be used.
  • the donut shape of the convex portion 21e1 is preferably a shape matched to the convex portion 21e2.
  • the shield plate 21a may have a shape different from the convex portions 21e1 and 21e2.
  • the power transmission pad 21, including the fifth and sixth embodiments can be configured with three or more windings by increasing the number of convex portions on the end side. Since only the shape and the number of windings are different, the same effect as in the fifth and sixth embodiments can be obtained.
  • the power supply control process shown in FIG. 29 can also be applied to the power transmission pad 21D6 shown in FIG. 43 and the power transmission pad 21D7 shown in FIG.
  • the center lines of the windings L1a and L1b are applied as the inner diameters Ra and Rb (see FIGS. 1 and 2).
  • a reference line other than the center line may be applied.
  • the line which follows the inner peripheral surface of winding L1a, L1b, the line which follows the outer peripheral surface of winding L1a, L1b, etc. correspond. Since only the reference line is different, the same effect as the fifth and sixth embodiments can be obtained.
  • the plate cores 21b to 21g have a plurality of convex portions 21b1, 21b2, 21b4, etc., which can be magnetic poles P1, P2, respectively.
  • the plurality of convex portions 21b1, 21b2, 21b4, and the like are configured such that the windings L1a to L1f are wound so that at least a part of the side surface portion is covered over the entire circumference (FIGS. 3, 4, 10, and FIG. 11, 14, 16, 17, 17, 19, 22, 30, 32, 34, 35, 37, 38, and 40).
  • Flow of magnetic flux surrounding L1f is formed (see FIGS. 5, 6, 12, 13, 15, 18, 21, 21, 24, 36, 39, and 41).
  • the flow of these magnetic fluxes is smaller than the flow of the magnetic flux which draws a big circle between a convex part and an edge part like a prior art. Therefore, the magnetic flux flowing through the plate-like cores 21b to 21g can be made smaller than before, and the leakage electromagnetic field E can be reduced. Further, the presence of the windings L1a and L1f wound on the end side of the plate-like core can suppress the leakage electromagnetic field E of the power transmission pad to 1/3 or less.
  • the winding numbers Na, Nf of the windings L1a, L1f wound around the convex portions 21b1, 21b4 etc. on one end side are the winding numbers Na-Nf of the windings L1a-L1f wound around the convex portions on one end side and the central side.
  • the first ratio Rat1 is 0.85 or less (see FIG. 9).
  • the leakage electromagnetic field E rather increases. According to this configuration, the leakage electromagnetic field E can be made smaller than before by setting the first ratio Rat1 to 0.85 or less.
  • the winding numbers Na, Nf of the windings L1a, L1f wound around the convex portions 21b1, 21b4 etc. on one end side are the winding numbers Na-Nf of the windings L1a-L1f wound around the convex portions on one end side and the central side.
  • the first ratio Rat1 is in the range of 0.4 to 0.6 (see FIG. 9). According to this configuration, the leakage electromagnetic field E can be minimized by setting the first ratio Rat1 within the range of 0.4 to 0.6.
  • the plate-shaped core 21c includes first core portions 21c1, 21c2, and 21c4 each including a plurality of convex portions, and a flat plate-like second core portion 21c3 that mounts and fixes the plurality of convex portions.
  • the one or more windings L1a, L1b, L1f are configured to be wound around the first core portions 21c1, 21c2, 21c4 and the second core portion 21c3, respectively (see FIGS. 10 and 11). According to this configuration, not only the plate-shaped core configured by itself but also the plate-shaped core 21c configured by the first core portions 21c1, 21c2, 21c4 and the second core portion 21c3 flows through the plate-shaped core 21c.
  • the flow of magnetic flux can be made smaller than before, and the leakage electromagnetic field E can be reduced.
  • the second core portion 21c3 is formed to be slightly smaller than the entire first core portion 21c1, 21c2, 21c4 (see FIGS. 10 and 11). According to this configuration, the windings L1a to L1f can be wound around the second core portion 21c3 so as not to protrude beyond the first core portions 21c1, 21c2, and 21c4, so that the physique of the entire pad can be kept small. .
  • the plate-like core is composed of a plurality of divided cores 21f, 21g, 21h, 21i, 21j, 21k, 21m, and each of the plurality of divided cores has one or more convex portions 21f1, 21f2, 21g1, 21g2, etc.
  • the arrangement is arranged in a row (see FIGS. 34, 35, 37, 38, and 40). According to this configuration, not only the plate-shaped core configured as a single unit, but also the plate-shaped core configured by the divided cores 21f and 21g, the divided cores 21h and 21i, and the divided cores 21j, 21k, and 21m, respectively.
  • the magnetic flux flowing through the core can be made smaller than before, and the leakage electromagnetic field E can be reduced.
  • the winding L1b is wound around the split cores 21f and 21g (specifically, the convex portions 21f2 and 21g1) (see FIGS. 34 and 35). Although not shown, two or more windings may be wound, or three or more split cores may be wound. According to this configuration, the convex portions 21f2 and 21g1 of the split cores 21f and 21g around which the winding L1b and the like are wound are the same magnetic pole P2 and act in the same manner as one convex portion. Therefore, the flow of the magnetic flux flowing through the plate-like core can be formed smaller than before, and the leakage electromagnetic field E can be reduced.
  • the first winding series portion SC1 that connects the windings L1a and L1f wound around the convex portions 21b1 and 21b4 on the end side in series, and the windings L1b to L1b that are wound around the convex portion 21b2 and the like excluding the end side
  • the first winding series portion SC1 and the second winding series portion SC2 are connected in parallel (see FIG. 7).
  • the bias of the current flowing through the windings L1a and L1f and the windings L1b to L1e can be suppressed, and the first winding series portion
  • the entire inductance value can be designed to be small by parallel connection of SC1 and second winding series part SC2.
  • the first areas S1, S3, S5 and S7 related to the convex portions 21b1, 21b4 and the like on the end side are the second areas S2, S4 and S6 related to the convex portions 21b2 and the like other than the end side (center side).
  • S8 is set to half (see FIGS. 3, 10, 14, and 16). According to this configuration, the magnetic flux density of the magnetic flux flowing through the convex portions 21b1, 21b4 and the like on the end side is equal to the magnetic flux density of the magnetic flux flowing through the convex portions 21b2 and the like other than the end side. Therefore, the flow of magnetic flux flowing through the plate-like cores 21b to 21g can be surely made smaller than before, and the leakage electromagnetic field E can be reliably reduced.
  • the plate-like core 21e has a predetermined convex portion 21e2 that can be the magnetic pole P1, and a donut-shaped convex portion 21e1 that can be the magnetic pole P2.
  • the convex portions 21e2 and 21e1 have a configuration in which the windings L1a and L1b are wound so that at least a part of the outer peripheral side surface is covered over the entire circumference (see FIGS. 16 and 17). . According to this structure, the flow of the magnetic flux which draws a circle is formed between the convex part 21e2 and the convex part 21e1.
  • the inner diameter Ra of the third area Sa based on the winding L1a other than the center side is a second ratio Rat2 of 0.8 or less with respect to the inner diameter Rb of the fourth area Sb based on the winding L1b on the center side.
  • a configuration was adopted (see FIGS. 25 and 26). According to this configuration, the leakage electromagnetic field E can be further reduced.
  • One of the plurality of windings L1a and L1b is short-circuited in a closed loop, and one winding (for example, winding L1a) and the other winding (for example, winding L1b) are magnetically coupled. It was set as the structure (refer FIG. 27, FIG. 28). According to this configuration, the leakage electromagnetic field E can be further reduced.
  • the plurality of windings L1a to L1f are all connected in series (see FIG. 8). According to this configuration, since the current flows equally in all the windings L1a to L1f, the bias of the current flowing in the windings L1a to L1f can be minimized.
  • a shield plate 21a formed in a larger shape than the plate cores 21b to 21g is arranged (FIGS. 3, 4, 10, and 11). 14, 16, 17, 19, 22, 30, 34, 35, 37, 38, and 40). According to this configuration, the magnetic flux does not spread outside the shield plate 21a arranged on one side of the plate cores 21b to 21g. Therefore, the flow of magnetic flux flowing through the plate-like cores 21b to 21g can be surely made smaller than before, and the leakage electromagnetic field E can be reliably reduced.
  • the non-contact power transmission system 100 is configured to include the power transmission pads 21A to 21G in one or both of the power receiving pad 15 and the power transmission pad 21 (see FIGS. 1 and 2). According to this configuration, the leakage electromagnetic field E can be reduced, and the efficiency of power transmission can be improved.
  • the power transmission side power converter 22 (210) and the power reception side power converter 14 (310) corresponding to the control unit include windings L1a and L1f wound around the convex portions 21b1 and 21b4 on the end side, When winding L1b etc. wound around convex parts 21b2 etc. other than the side (center side) are wound in opposite directions to each other, current flows along the winding direction (arrow D1 direction and arrow D2 direction) (See FIG. 3, FIG. 4, FIG. 10, FIG. 11, FIG. 16, FIG. 17, FIG. 19, FIG. 19, FIG. 22, FIG. 30, FIG. 34, and FIG. 35).
  • the windings L1a to L1f are wound in the same direction in all the convex portions 21b1, 21b2, 21b4, etc.
  • the windings L1a, L1f, etc. wound around the convex portions 21b1, 21b4, etc. on the end side Other than the central portion (center side) of the convex portion 21b2 and the like, the winding L1b and the like are configured to flow currents in opposite directions (FIGS. 3, 4, 10, 11, 16, 17, and 17). (See arrows D1 and D2 shown in FIGS. 34 and 35).
  • the power transmission side power converter 22 (210) and the power reception side power converter 14 (310) have a plurality of windings L1a and L1b when the leakage electromagnetic field E is lower than a reference value defined in a predetermined standard. Among them, a current is passed through one of the windings, or a current is passed through the plurality of windings L1a and L1b in the same direction. According to this configuration, the leakage electromagnetic field E is lower than the reference value defined in the standard.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne une pastille de transmission d'énergie dans laquelle un cœur (21b) en forme de plaque possède une pluralité de sections convexes (21b1, 21b2, 21b4) qui peuvent chacune être un pôle magnétique (P1, P2), un fil de bobinage (L1a, L1b, L1f) est enroulé sur la pluralité de sections convexes (21b1, 21b2, 21b4) d'une manière telle qu'au moins une partie de la totalité de la périphérie des surfaces latérales respectives soit recouverte. Au moyen de cette configuration, un écoulement de flux magnétique décrivant un cercle entre des sections convexes adjacentes (21b1, 21b2, 21b4), et un écoulement de flux magnétique entourant le fil de bobinage (L1a, L1b, L1f) enroulé sur les surfaces latérales externes parmi les sections convexes (21b1, 21b4) sont formés au niveau des extrémités. Ainsi, il est possible pour l'écoulement du flux magnétique s'écoulant à travers le cœur (21b) en forme de plaque d'être plus petit que ce qui est classiquement rencontré, et il est possible de réduire un champ électromagnétique de fuite.
PCT/JP2015/063190 2014-05-22 2015-05-07 Pastille de transmission d'énergie et système de transmission d'énergie sans contact Ceased WO2015178206A1 (fr)

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JP6537071B2 (ja) * 2016-04-20 2019-07-03 昭和飛行機工業株式会社 外部消磁式の非接触給電装置
JP6522546B2 (ja) * 2016-05-12 2019-05-29 マクセル株式会社 電力コイル
KR102069097B1 (ko) * 2017-12-05 2020-01-22 한국과학기술원 무선 전력 전송을 위한 마그네틱 필드 생성용 코일 장치
DE102020201753A1 (de) * 2020-02-12 2021-08-12 Würth Elektronik eiSos Gmbh & Co. KG Spulen-Modul und Verfahren zur Herstellung einer Spulen-Anordnung
JP7561044B2 (ja) * 2021-01-21 2024-10-03 Tdk株式会社 コイル部品及びこれを備えるワイヤレス電力伝送デバイス
JP2022168680A (ja) * 2021-04-26 2022-11-08 学校法人東京理科大学 磁界発生装置

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JPH1092672A (ja) * 1996-09-16 1998-04-10 Toyota Autom Loom Works Ltd 移動体における非接触給電用鉄心、受電装置及び移動体
JP2000294438A (ja) * 1999-04-06 2000-10-20 Furukawa Electric Co Ltd:The 分離型トランスの電力伝送方法及びその装置
JP2004519853A (ja) * 2001-03-02 2004-07-02 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 一次及び二次巻線間の相互自己インダクタンスの容量性並列補償を備える電磁結合システム
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