WO2013183665A1 - 非接触給電トランス - Google Patents
非接触給電トランス Download PDFInfo
- Publication number
- WO2013183665A1 WO2013183665A1 PCT/JP2013/065572 JP2013065572W WO2013183665A1 WO 2013183665 A1 WO2013183665 A1 WO 2013183665A1 JP 2013065572 W JP2013065572 W JP 2013065572W WO 2013183665 A1 WO2013183665 A1 WO 2013183665A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetic
- heat
- power supply
- core
- heat conductor
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/11—DC charging controlled by the charging station, e.g. mode 4
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F3/14—Constrictions; Gaps, e.g. air-gaps
-
- 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
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
- B60L2240/36—Temperature of vehicle components or parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F2027/348—Preventing eddy currents
-
- 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
- Y02T90/12—Electric charging stations
-
- 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 non-contact power supply transformer that supplies electric power to an electric vehicle or the like in a non-contact manner, and relates to improvement of heat dissipation characteristics of the transformer.
- a secondary coil (receiving coil) 20 of a non-contact power supply transformer is mounted on the floor of the vehicle and installed on the ground side.
- a system for supplying power from the primary coil (power transmission coil) 10 in a non-contact manner using electromagnetic induction In Patent Document 1 below, as a power transmission coil 10 and a power reception coil 20 of a contactless power transformer used in this system, as shown in FIGS. 18A and 18B, windings (electric wires) are formed on one side of flat ferrite cores 21 and 31 as shown in FIGS. ) Is spirally wound in a flat shape.
- This type of coil is referred to as a “one-sided coil” because the windings 22 and 32 are wound only on one side of the ferrite cores 21 and 31.
- 18A is a cross-sectional view of the power transmission coil and the power reception coil
- FIG. 18B is a plan view of the power transmission coil or the power reception coil.
- a contactless power transformer using a single-sided coil greatly increases the efficiency of power feeding when the stop position of the vehicle shifts and the power transmission coil and the power reception coil do not face each other or the gap g between the power transmission coil and the power reception coil varies. To drop. In order to increase the allowable amount with respect to such displacement and gap g, it is necessary to increase the size w of the power transmission coil and the power reception coil.
- Patent Document 2 listed below discloses a non-contact power supply transformer that has a large allowable amount of positional deviation and gap fluctuation and can be configured in a small size.
- this non-contact power supply transformer is configured by winding coils 62 and 64 around ferrite cores 61 and 63 to form a power transmission coil and a power reception coil.
- This coil is referred to as a “double-sided coil”.
- “square cores” are used as the ferrite cores 61 and 63.
- 19A is a cross-sectional view of the power transmission coil and the power reception coil
- FIG. 19B is a plan view of the power transmission coil or the power reception coil.
- a main magnetic flux 67 that circulates through the magnetic pole portions of the ferrite cores 61 and 63 is generated.
- leakage magnetic flux 68 and 69 detouring to the non-facing surface side of the power transmission coil and the power reception coil are generated.
- electromagnetic shielding metal plates 65 and 66 made of a non-magnetic good conductor such as an aluminum plate are arranged on the back surfaces of the power transmission coil and the power reception coil so that the leakage magnetic flux 68 and 69 is generated. Electromagnetic shielding is required.
- the ferrite core 40 is formed in an H shape, and parallel portions on both sides of the H shape.
- a magnetic pole part 41 and 42 and a power transmission coil and a power reception coil are disclosed in which a winding 50 is wound around a part 43 (a part connecting magnetic pole parts) corresponding to an H-shaped horizontal bar.
- 20A shows a state where the winding 50 is wound around the ferrite core 40
- FIG. 20D shows a state where the winding 50 is not wound around the ferrite core 40.
- 20B is a cross-sectional view taken along the line AA in FIG. 20A, and FIG.
- FIG. 20C is a cross-sectional view taken along the line BB in FIG. 20A.
- FIG. 20E is a cross-sectional view taken along line AA in FIG. 20D
- FIG. 20F is a cross-sectional view taken along line BB in FIG. 20D.
- a non-contact power feeding transformer capable of supplying high power is underway.
- a high frequency current of about 10 kHz to 200 kHz flows in a power transmission coil and a high frequency magnetic flux is generated. Therefore, in the core portion of the power transmission coil and the power receiving coil through which the magnetic flux passes, Temperature rises due to iron loss.
- the double-sided coil can be reduced in size, but the heat capacity is reduced accordingly, so that the temperature is likely to rise due to iron loss in the core portion and copper loss in the winding. Therefore, in order to obtain a double-sided coil capable of supplying a large amount of power, a heat dissipation measure is indispensable.
- FIG. 21 shows a temperature rise test result obtained by measuring the relationship between the temperature of each part of the coil and the power feeding time, in which the power transmitting coil and the power receiving coil are constituted by double-sided coils for 10 kW having an H-shaped core.
- the primary side core of the power transmission coil, the primary side coil and the primary side aluminum plate corresponding to the electromagnetic shielding metal plate 65 which is an aluminum plate for magnetic shielding shown in FIG. 19
- the secondary side core of the power receiving coil The temperature, room temperature, and power supply efficiency of the secondary side coil and secondary side aluminum plate (corresponding to the electromagnetic shielding metal plate 66 which is an aluminum plate for magnetic shielding shown in FIG. 19) are measured over 50 minutes. .
- the core of the power receiving coil reaches 110 ° C. or more after 50 minutes from the start of power feeding.
- the saturation magnetic flux density of the ferrite core decreases, and the film of the winding (Litz wire) may be melted, which may reduce the safety when put into practical use, and countermeasures are necessary.
- the heat generated from the windings of the double-sided winding coil appears on the surface of the ferrite core. Therefore, a part of the case housing the coil is formed of a material having high thermal conductivity (for example, aluminum material). It is possible to dissipate the heat of the winding through the case.
- the ferrite core has a lower thermal conductivity than aluminum or copper and is wound around a winding, so it is difficult to dissipate heat.
- the present invention was devised in view of such circumstances, and an object of the present invention is to provide a non-contact power supply transformer that can effectively dissipate the heat of the ferrite core part covered with the winding of the double-sided coil. It is said.
- the non-contact power supply transformer of the present invention includes a core part between magnetic poles between two magnetic pole parts, and includes a double-sided coil in which a winding is wound in a winding region of the core part between the magnetic poles.
- a plurality of separation magnetic members arranged in parallel with a gap between each other, and in contact with the separation magnetic member in a plane formed by the plurality of separation magnetic members.
- thermal conductors arranged alternately with the separated magnetic members. Then, the heat generated by the separation magnetic member is led out to the outside of the winding region of the core portion between the magnetic poles through the heat conductor and radiated. In this non-contact power supply transformer, the heat generated by the separation magnetic member is radiated to the outside through the heat conductor.
- the heat conductor connecting portions that are in close contact with the heat conductor are respectively disposed at both ends that are out of the winding region of the core portion between the magnetic poles, and the heat derived through the heat conductor is transferred to the heat conductor. Heat may be radiated through the connecting portion.
- the two magnetic pole portions are composed of a magnetic magnetic pole member that is longer than the width of the core portion between the magnetic poles connected to the magnetic pole portion, and the winding of one surface of the core portion between the magnetic poles is performed. Both end portions outside the region are respectively connected to intermediate positions in the longitudinal direction of the magnetic magnetic pole member, and each of the separated magnetic members and the two magnetic magnetic pole members are connected.
- a thermal conductor connecting portion that is in close contact with the heat conductor is disposed at both ends of the other side of the core portion between the magnetic poles, and heat derived from the heat conductor is passed through the heat conductor connecting portion. May be dissipated.
- the heat conductor connecting portion may be connected to an electromagnetic shielding metal plate installed on the non-opposing surface side with the counterpart coil.
- the heat conductor may be divided into two at an intermediate position between the heat conductor connecting portions arranged at both ends outside the winding region.
- the heat conductor may be composed of a rod-shaped body of aluminum or copper.
- the heat conductor may have a pipe structure, and gas or liquid may flow therethrough.
- the pipe structure may be a part of the heat pipe.
- a heat radiating fin or a blower fan for cooling the electromagnetic shielding metal plate may be provided.
- the magnetic body of the magnetic pole part and the core part between the magnetic poles may be formed of ferrite.
- An amorphous core may be used as a part of the magnetic body of the magnetic pole part and the core part between the magnetic poles.
- the rated power of the transformer may be 10 kW or more.
- the present invention it is possible to improve the heat dissipation characteristics of the double-sided coil, and to provide a small non-contact power supply transformer capable of rapid charging using the double-sided coil.
- FIG. 1 is a diagram illustrating a double-sided coil of a non-contact power supply transformer according to an embodiment.
- FIG. 2 is a view showing a core portion between magnetic poles of the double-sided coil shown in FIG.
- FIG. 3 is a diagram showing an H-shaped core of the double-sided coil of FIG.
- FIG. 4 is a view showing a state in which a heat conductor connecting portion is connected to the H-shaped core of FIG.
- FIG. 5A is a plan view showing the configuration of the double-sided coil of FIG.
- FIG. 5B is a side view when the double-sided winding coils are arranged to face each other.
- FIG. 5C is a diagram for explaining the case where the double-sided winding coils are arranged to face each other, and is a diagram showing the magnetic gap length G2 and the interwinding distance G1 of the double-sided winding coils.
- FIG. 6 is a diagram schematically showing the heat flow in the double-sided coil of FIG.
- FIG. 7 is a diagram showing the flow of magnetic flux in the H-shaped core.
- FIG. 8 is a diagram showing the leakage magnetic flux of the H-shaped core.
- FIG. 9 is a diagram showing the flow of magnetic flux of the H-shaped core having the separated ferrite member.
- FIG. 10 is a diagram in which the winding and the winding frame are removed from the non-contact power supply transformer used for temperature measurement.
- FIG. 11A is a plan view of a state in which a winding frame is attached to the non-contact power supply transformer of FIG.
- FIG. 11B is a side view of FIG. 11A.
- FIG. 11C is a side view when seen from another direction of FIG. 11A.
- FIG. 12 is a diagram illustrating a temperature change of the contactless power transfer transformer according to the embodiment.
- FIG. 13 is a diagram comparing the temperature change of FIG. 12 with the temperature change of a conventional non-contact power supply transformer.
- FIG. 14 is a diagram showing a change in constant depending on the presence or absence of an aluminum material heat conductor.
- FIG. 15A is a diagram illustrating a conductive loop formed in a double-sided coil according to the embodiment.
- FIG. 15B is a diagram illustrating a modification in which a divided heat conductor is employed in the double-sided coil according to the embodiment.
- FIG. 16 is a diagram illustrating a modification in which a square core is employed in the double-sided coil according to the embodiment.
- FIG. 17 is a diagram illustrating a non-contact power feeding system for an automobile.
- FIG. 18A is a cross-sectional view showing a conventional single-sided coil.
- 18B is a plan view of FIG. 18A.
- FIG. 19A is a cross-sectional view showing a double-sided coil using a conventional rectangular core.
- FIG. 19B is a plan view of FIG. 19A.
- 20A is a diagram for explaining a double-sided coil using a conventional H-shaped core and showing a state in which a winding is wound.
- 20B is a cross-sectional view taken along line AA in FIG. 20A.
- 20C is a cross-sectional view taken along line BB in FIG. 20A.
- FIG. 20D is a diagram illustrating a double-sided coil using a conventional H-shaped core, and is a diagram illustrating a state in which no winding is wound.
- 20E is a cross-sectional view taken along line AA in FIG. 20D.
- FIG. 20F is a cross-sectional view taken along line BB in FIG. 20D.
- FIG. 21 is a diagram showing a temperature change of a conventional double-sided coil.
- FIG. 22 is a diagram showing the thermal conductivity of copper, aluminum, and ferrite.
- FIG. 1 schematically shows a configuration of a contactless power transfer transformer according to an embodiment of the present invention
- FIGS. 2, 3, and 4 schematically show a configuration in the middle of reaching the configuration of FIG. ing.
- This non-contact power supply transformer includes a double-sided winding coil in which a winding (electric wire) 150 is wound around a core portion 143 between magnetic poles constituting a part of an H-shaped core.
- the winding 150 is wound around the winding area 144 of the inter-magnetic core section 143, and no winding is wound around the end of the inter-magnetic core section 143 that is out of the winding area 144.
- the intermagnetic pole core part 143 has the separation magnetic members 243 and the heat conductors 244 arranged alternately. That is, a plurality of separated magnetic members 243 (hereinafter referred to as “separated ferrite members” because the non-contact power supply transformer uses ferrite as a magnetic material) arranged in parallel with a space between each other. And the plurality of thermal conductors 244 arranged alternately with the separated ferrite members 243 so as to come into contact with both side surfaces of the adjacent separated ferrite members 243.
- the separated ferrite member 243 and the heat conductor 244 are combined in a single flat plate shape.
- the width of the heat conductor 244 is set to about 1/5 of the width of the separation ferrite member 243.
- the separation ferrite member 243 functions as a winding core of an H-shaped core.
- the thermal conductor 244 is made of, for example, an aluminum material having a high thermal conductivity, and has a function of guiding heat generated in the separation ferrite member 243 at the time of power feeding to the end side outside the winding area of the inter-core core portion 143. Fulfill.
- the ferrite magnetic pole member 180 constituting the magnetic pole part is connected to both ends of the core part 143 between the magnetic poles 143 away from the winding area 144 via lower ferrite plates 181 and 182.
- the length of the ferrite magnetic pole member 180 is set longer than the width of the core portion 143 between the magnetic poles connected to the ferrite magnetic pole member 180 through the lower ferrite plates 181 and 182.
- the core part 143 between the magnetic poles is connected to an intermediate position of the ferrite magnetic pole member 180.
- An H-shaped core is formed by the two ferrite magnetic pole members 180 in parallel and the core portion 143 between the magnetic poles connecting them. In this H-shaped core, as shown in FIGS.
- FIG. 5A is a plan view showing the configuration of a double-sided coil
- FIG. 5B is a side view when the double-sided coils of FIG.
- FIG. 5C is a diagram showing the magnetic gap length G2 and the interwinding distance G1 when the double-sided winding coils are arranged to face each other.
- the magnetic gap length G2 is equal to or shorter than the interwinding distance G1 of the winding 150. can do.
- the coupling coefficient between the coils is increased, and the power feeding efficiency and the maximum power feeding power are increased.
- the opposite surface of the surface to which the ferrite magnetic pole member 180 is connected via the lower ferrite plates 181, 182 is provided at both ends away from the winding area 144.
- the heat conductor connecting portion 245 that is in close contact with the heat conductor 244 is disposed.
- the heat conductor connecting portion 245 plays a role of deriving the heat transmitted by the heat conductor 244 to the outside of the non-contact power supply transformer.
- the heat conductor connecting portion 245 is connected to an electromagnetic shielding metal plate (corresponding to the electromagnetic shielding metal plates 65 and 66 in FIG. 19) arranged on the non-facing surface side when the power transmission coil and the power reception coil face each other. .
- FIG. 6 schematically shows the flow of heat transmitted from the heat conductor 244 to the electromagnetic shielding metal plate 65 through the heat conductor connecting portion 245.
- the separated ferrite member 243 and the heat conductor 244 are alternately arranged in parallel on the same plane to constitute the inter-magnetic pole core portion 143.
- the reason why the core part 143 having such a structure is adopted is as follows.
- FIG. 7 shows the result of analyzing the magnetic flux flow of a double-sided coil having an H-shaped core using electromagnetic field analysis software.
- FIG. 8 has shown the result analyzed about the leakage magnetic flux when the double-sided winding coil which has an H-shaped core opposes.
- the metal has high conductivity, if the magnetic flux passing through the core or the magnetic flux leaking from the core is interrupted, an eddy current is generated in the metal, and the efficiency of power feeding is reduced due to the eddy current loss.
- a metal plate is arranged between the core part between the magnetic poles and the winding to extract the heat of the core, as shown in a part surrounded by a circle Q in FIG. Since there is a leakage magnetic flux that goes straight upward, the metal plate blocks the leakage magnetic flux, and the efficiency of power supply is reduced.
- the metal ( The heat conductor 244) of this embodiment does not block the leakage flux.
- parallel magnetic fluxes flowing from one magnetic pole member to the other magnetic pole member flow through the plurality of ferrite plates, and the metal is positioned in a plane formed by the plurality of ferrite plates. However, the magnetic flux passing through the ferrite plate is not blocked.
- the heat conductor 244 is disposed on the same plane as the plurality of separated ferrite members 243 and is disposed in parallel with the plurality of separated ferrite members 243, and the heat conductor 244 is separated from the separated ferrite members.
- the magnetic flux passing through 243 and the magnetic flux leaking from the separated ferrite member 243 are not blocked.
- the thermal conductor connecting portion 245 disposed on the opposite surface of the inter-magnetic core portion 143 to the surface to which the ferrite magnetic pole member 180 is connected the magnetic flux passing through the plurality of separated ferrite members 243 flows toward the ferrite magnetic pole member 180. Therefore, the magnetic flux and leakage magnetic flux are not blocked.
- FIG. 10 shows a state in which the winding of the non-contact power supply transformer and the electromagnetic shielding metal plate used for this measurement are removed.
- 11A shows a plan view of the non-contact power supply transformer on the electromagnetic shielding metal plate 65
- FIG. 11B shows a side view of the opposing non-contact power supply transformer as viewed from the direction of the ferrite magnetic pole member 180. Yes.
- FIG. 11C shows a side view of the facing non-contact power supply transformers as viewed from another direction.
- FIG. 11A shows a state where the core part between the magnetic poles is accommodated in the winding frame 151.
- the winding frame 151 defines a winding region 144 (see FIG. 2) of a winding (not shown), and the winding is wound around the outer periphery of the winding frame 151.
- 11A to 11C also show the ferrite magnetic pole member 180, the separation magnetic member 243, the heat conductor 244, the heat conductor connecting portion 245, and the like.
- FIG. 12 shows the temperature rise test results when this embodiment is applied.
- the result of having measured the change of the temperature of board (electromagnetic shielding metal plate) f, room temperature g, and the efficiency h of electric power feeding over 150 minutes is shown.
- the secondary coil d reaches 100 ° C. after 150 minutes from the start of power feeding. From the temperature change of FIG. 12, each temperature seems to be close to saturation.
- the efficiency of power supply is 94.0% immediately after the start of power supply, and increases to 94.6% one hour later.
- FIG. 13 shows a comparison between the temperature change c ′ of the secondary side core described in FIG. 21 and the temperature change c of the secondary side core described in FIG. 12, and is also shown in FIG.
- the change g ′ at room temperature and the change g at room temperature shown in FIG. 12 are shown in comparison. From FIG. 13, it can be well confirmed that the heat dissipation characteristics of the contactless power transfer transformer of this embodiment are greatly improved.
- FIG. 14 shows a constant (with aluminum) of a non-contact power supply transformer in which an aluminum material is used for the thermal conductor 244, and the separated ferrite members 243 and the thermal conductor 244 are alternately arranged in the core portion 143 between the magnetic poles.
- the effect of inserting the aluminum heat conductor 244 into the core appears a little in the resistance values (r1, r2), but there is almost no effect on the other constants, and the power supply efficiency ⁇ max is hardly lowered.
- the heat conductor 244 arranged alternately with the separated ferrite member 243 in the inter-pole core portion 143 of the double-sided winding coil is indicated by a dotted line in FIG. 15A (the heat conductor 244 to one heat conductor connecting portion 245 to the adjacent heat conductor 245).
- the conductive loop L is formed around the conductor 244 to the other heat conductor connecting portion 245.
- the heat conductor 244 may be divided into two in the middle of the two heat conductor connecting portions 245. Since each of the two divided heat conductors 244 is connected to one of the heat conductor connecting portions 245, the heat dissipation performance does not deteriorate.
- the heat conductor 244 may be formed of copper or the like having high heat conductivity. Further, the heat conductor 244 may be a tube structure having a square cross section, and gas or liquid may be circulated therein to improve the cooling performance. Also, heat transfer from the high-temperature part to the low-temperature part is repeated by repeating the action that the circulating liquid absorbs heat at the high-temperature part and evaporates and releases the heat at the low-temperature part and liquefies. May be made more efficient. Further, in order to enhance the cooling effect of the electromagnetic shielding metal plates 65 and 66, a heat radiation fin or a blower fan may be provided to cool the electromagnetic shielding metal plates 65 and 66.
- the core of the double-sided coil may be square.
- the configuration of the double-sided coil can be simplified.
- the case where ferrite is used for the core has been described.
- other magnetic material having a small loss at a frequency used for non-contact power feeding for example, an amorphous magnetic material may be used for all or part of the core.
- the non-contact power supply transformer of the present embodiment is wound between the two magnetic pole portions and between the magnetic pole core portion having the winding region covered by the winding and the winding region of the inter-magnetic pole core portion.
- a double-sided coil with a wound winding The core part between the magnetic poles is connected to the magnetic bodies (magnetic magnetic pole members) of the two magnetic pole parts, and a plurality of separated magnetic members (the magnetic parts of the core part between the magnetic poles) arranged in parallel with a gap between them.
- Body and a heat conductor alternately disposed with the separation magnetic member so as to contact the separation magnetic member in a plane formed by the plurality of separation magnetic members, and heat generated by the separation magnetic member passes through the heat conductor. It is led out to the outside of the winding region of the core part between the magnetic poles and radiated. In this non-contact power supply transformer, heat generated by the separation magnetic member covered by the winding is radiated to the outside through the heat conductor.
- the heat conductor or the conductive loop formed by the heat conductor is linked to the magnetic field lines passing through the separation magnetic member or the magnetic field lines leaking outside from the separation magnetic member, eddy currents flow through the heat conductor and eddy current loss occurs. , Power supply efficiency is reduced. Therefore, the heat conductor and the separation magnetic member are arranged in parallel in the same plane so that the heat conductor or the conductive loop formed by the heat conductor does not interlink with the magnetic field lines.
- the heat conductor connecting portions that are in close contact with the heat conductor are disposed at both ends of the core portion between the magnetic poles, and the heat derived from the heat conductor is heated. Heat is dissipated through the conductor connecting portion. That is, the heat generated by the separation magnetic member covered with the winding is radiated to the outside through the heat conductor and the heat conductor connecting portion.
- the two magnetic pole portions are composed of a magnetic pole member having a length longer than the width of the core portion between the magnetic poles connected to the magnetic pole portion, and one of the core portions between the magnetic poles Both ends of the surface that are out of the winding region of the surface are respectively connected to intermediate positions in the longitudinal direction of the magnetic magnetic pole member, and each of the separated magnetic members and the two magnetic magnetic pole members are connected.
- a thermal conductor connecting portion that is in close contact with the heat conductor is disposed at both ends of the other side of the core portion between the magnetic poles, and heat derived from the heat conductor is passed through the heat conductor connecting portion. To dissipate heat.
- the length of the magnetic magnetic pole member is longer than the contact width of the core portion between the magnetic poles so that the core member has an H shape.
- a heat conductor connecting portion that is in close contact with the heat conductor is disposed on the opposite surface of the core portion between the magnetic poles to which the magnetic magnetic pole member is connected.
- the heat conductor connecting portion is connected to an electromagnetic shielding metal plate installed on the non-facing surface side with the counterpart coil. Therefore, the heat generated in the core part between the magnetic poles covered with the windings can be guided to the heat conductor, the heat conductor connecting part, and the electromagnetic shielding metal plate that are in contact with the separation magnetic member to be radiated.
- the heat conductor may be divided into two at an intermediate position between the two heat conductor connecting portions arranged at both ends away from the winding region. As described above, by dividing the heat conductor, it is possible to prevent the formation of a conductive loop of the heat conductor interlinked with the magnetic flux, and it is possible to suppress a reduction in power supply efficiency.
- the heat conductor may be composed of a rod-shaped body of aluminum or copper. Since aluminum and copper have a thermal conductivity 50 to 80 times that of ferrite, heat generated by the separation magnetic member can be effectively extracted.
- the heat conductor may have a pipe structure, and gas or liquid may flow through the pipe structure.
- gas or liquid may flow through the pipe structure.
- a heat pipe may be used as the heat conductor.
- the heat pipe can efficiently transfer heat from the high temperature part to the low temperature part through a phenomenon in which the liquid evaporates in the high temperature part and the vapor liquefies in the low temperature part. Therefore, efficient heat dissipation can be performed.
- a heat radiation fin or a blower fan may be provided to cool the electromagnetic shielding metal plate.
- a heat radiation fin or a blower fan may be provided to cool the electromagnetic shielding metal plate.
- the magnetic body of the magnetic pole part and the core part between the magnetic poles may be formed of ferrite. Moreover, you may use an amorphous core for a part of magnetic body of a magnetic pole part and the core part between magnetic poles. Moreover, the non-contact electric power feeding transformer of this embodiment is good also considering the rated electric power of a transformer as 10 kW or more.
- the contactless power transfer transformer of the present embodiment has high heat dissipation characteristics, and thus is small in size and capable of supplying high power with a rated power of 10 kW or more. It can be widely used for non-contact power feeding of various moving bodies such as hybrid cars.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
Description
下記特許文献1には、このシステムに用いる非接触給電トランスの送電コイル10及び受電コイル20として、図18A、図18Bに示すように、平板状のフェライト磁心21,31の片面に巻線(電線)を螺旋状に扁平に巻回して構成したものが開示されている。この形態のコイルは、フェライト磁心21,31の片側だけに巻線22,32が巻かれているので「片側巻コイル」と称する。なお、図18Aは、送電コイルおよび受電コイルの断面図であり、図18Bは、送電コイルまたは受電コイルの平面図である。
この非接触給電トランスでは、フェライトコア61,63の磁極部を通って巡回する主磁束67が発生する。それとともに、送電コイル、受電コイルの非対向面側に迂回する漏洩磁束68,69が生じる。この漏洩磁束68,69が車体の床の鉄板等に侵入すると、誘導電流が流れて鉄板が加熱され、給電の効率が低下する。これを避けるため、両側巻コイルを用いる非接触給電トランスでは、送電コイル及び受電コイルの背面にアルミ板等の非磁性良導体から成る電磁遮蔽金属板65,66を配置して漏洩磁束68,69を電磁遮蔽する必要がある。
このH字形コアを用いた両側巻コイルで構成された送電コイル及び受電コイルを標準ギャップ長70mmの間隔で対向させて3kWの給電を行った場合、トランスの効率が95%、左右方向(図20Aのy方向)の位置ずれ許容量が±150mm、前後方向(図20Aのx方向)の位置ずれ許容量が±60mm、また、標準ギャップ長を100mmに拡大したときの効率が92%、という給電特性が得られている。
電磁誘導を利用する移動体の非接触給電システムでは、送電コイルに10kHz~200kHz程度の高周波電流が流れ、高周波の磁束が発生するため、その磁束が通過する送電コイル及び受電コイルのコア部分では、鉄損により温度が上昇する。
両側巻コイルは、小型化できるが、それに伴って熱容量が小さくなるため、コア部分の鉄損や巻線の銅損により温度が上昇し易い。そのため、大電力給電が可能な両側巻コイルを得るためには、放熱対策が不可欠である。
図21から明らかなように、受電コイルのコアは、給電開始から50分後に、110℃以上に達している。
両側巻コイルの巻線から生ずる熱は、巻線がフェライトコアの表面に現われているため、コイルを収納するケースの一部を熱伝導率の高い材料(例えば、アルミ材)で形成し、このケースを通じて巻線の熱を放熱することが可能である。
しかし、フェライトコアは、図22に示すように、アルミニウムや銅に比べて熱伝導率が低い上に、巻線に巻かれているため、放熱することが難しい。
この非接触給電トランスでは、分離磁性部材の発熱が、熱導体を通じて外部に放熱される。
また、磁極部及び磁極間コア部の磁性体の一部にアモルファスコアが用いられてもよい。
また、本発明の非接触給電トランスは、トランスの定格電力を10kW以上としてもよい。
この非接触給電トランスは、H字形状のコアの一部を構成する磁極間コア部143に巻線(電線)150が巻回された両側巻コイルを含む。巻線150は、磁極間コア部143の巻回区域144に巻回されており、巻回区域144から外れた磁極間コア部143の端部には巻線が巻かれていない。
分離フェライト部材243は、H字形状コアの巻線コアとして機能する。一方、熱導体244は、熱伝導率が高い例えばアルミニウム材から成り、給電時に分離フェライト部材243で発生する熱を、磁極間コア部143の巻回区域から外れた端部側にまで導く機能を果たす。
このH字形状コアにおいて、下層フェライト板181,182は、図5A~図5Cに示すように、相手コイルと対向する最上部のフェライト磁極部材180の高さを、巻線部150の高さと同等、またはそれ以上に押し上げるために積層されている。ここで、図5Aは、両側巻コイルの構成を示す平面図でり、図5Bは、図5Aの両側巻コイルを対向配置した場合の側面図である。また、図5Cは、両側巻コイルを対向配置した場合の磁気ギャップ長G2及び巻線間距離G1を示す図である。
このように、磁極部のフェライト磁極部材180に下層フェライト板181,182から成る“脚”を付けることで、磁気ギャップ長G2を巻線150の巻線間距離G1と同等、またはそれ以下に短くすることができる。このように、磁気ギャップ長を短くすると、コイル間の結合係数が高くなり、給電の効率と最大給電電力とが上昇する。
図6は、熱導体244から熱導体連結部245を経て電磁遮蔽金属板65に伝わる熱の流れを模式的に示している。
両側巻コイルのコアの磁束分布を調べると、磁極間コア部を通過する磁束の向きは、一方の磁極部から他方の磁極部に向かって並行している。図7は、H字形コアを有する両側巻コイルの磁束の流れについて、電磁界解析ソフトを用いて解析した結果を示している。
また、図8は、H字形コアを有する両側巻コイルが対向したときの漏れ磁束について解析した結果を示している。
例えば、磁極間コア部と巻線との間に金属板を配置してコアの熱を引き出そうとすると、図8の丸Qで囲んだ部分に現われているように、磁極間コア部のフェライト部材からは真上に向かう漏れ磁束が存在するため、金属板は、この漏れ磁束を遮ることになり、給電の効率が低下する。
これに対して、本実施形態のように磁極間コア部143を構成する分離フェライト部材243のように、複数のフェライト板を、隙間を空けて並行に配置した場合、この隙間に位置する金属(本実施形態の熱導体244)は、漏れ磁束を遮らない。また、図9に示すように、この複数のフェライト板には、一方の磁極部材から他方の磁極部材に向かう並行な磁束が流れており、複数のフェライト板が形成する平面内に金属が位置してもフェライト板を通過する磁束を遮ることはない。
また、磁極間コア部143のフェライト磁極部材180が接続された面の反対面に配置された熱導体連結部245は、複数の分離フェライト部材243を通過する磁束がフェライト磁極部材180の方に流れるため、その磁束や漏れ磁束を遮ることがない。
図10は、この測定に用いた非接触給電トランスの巻線及び電磁遮蔽金属板を除いた状態を示している。また、図11Aには、電磁遮蔽金属板65上の非接触給電トランスの平面図を示し、図11Bには、フェライト磁極部材180の方向から見た対向する非接触給電トランスの側面図を示している。また、図11Cには、別方向から見た対向する非接触給電トランスの側面図を示している。なお、図11Aでは、磁極間コア部が巻枠151内に収容された状態を示している。巻枠151は、巻線(図示を省略)の巻回領域144(図2参照)を規定しており、巻線は、この巻枠151の外周に巻回される。なお、図11A~図11Cにおいては、フェライト磁極部材180、分離磁性部材243、熱導体244、熱導体連結部245等も図示されている。
二次側コイルdは、給電開始から150分が経過して100℃に到達している。図12の温度変化から見て、各温度は、飽和に近いと思われる。給電の効率は、給電開始直後は94.0%で、一時間後に94.6%に上昇している。
図13には、図21に記載された二次側コアの温度変化c’と図12に記載された二次側コアの温度変化cとを対比して示し、また、図21に記載された室温の変化g’と図12に記載された室温の変化gとを対比して示している。
図13から、本実施形態の非接触給電トランスの放熱特性が大幅に改善していることが良く確認できる。
コア中にアルミニウム材の熱導体244を挿入した影響は、抵抗値(r1,r2)に少し現われているが、その他の定数には殆ど影響が無く、給電の効率ηmaxも殆ど低下しない。
また、熱導体244は、角型断面の管構造とし、中に気体や液体を循環させて冷却性能を高めるようにしてもよい。また、ヒートパイプ構造とし、循環する液体が高温部で熱を吸収して蒸発し、低温部で熱を放出して液化する、という作用を繰り返すことで、高温部から低温部への熱の移動を効率化してもよい。
また、電磁遮蔽金属板65,66の冷却効果を高めるために、放熱フィンや送風ファンを設けて電磁遮蔽金属板65,66を冷却するようにしてもよい。
また、本実施形態ではコアにフェライトを利用する場合について説明したが、非接触給電で用いる周波数において損失の少ない他の磁性体、例えばアモルファス磁性体などをコアの全部または一部に用いてもよい。
上述したように、本実施形態の非接触給電トランスは、二つの磁極部の間に、巻線に覆われた巻回領域を有する磁極間コア部と、磁極間コア部の巻回領域に巻回された巻線とを備える両側巻コイルを含む。そして、磁極間コア部は、二つの磁極部の磁性体(磁性磁極部材)にそれぞれ接続するとともに、相互間に隙間を空けて平行に配置された複数の分離磁性部材(磁極間コア部の磁性体)と、複数の分離磁性部材が形成する平面内で分離磁性部材に接するように分離磁性部材と交互に配置された熱導体と、を備え、分離磁性部材で発生した熱が、熱導体を通じて磁極間コア部の巻回領域の外側に導出され、放熱される。
この非接触給電トランスでは、巻線に覆われた分離磁性部材の発熱が、熱導体を通じて外部に放熱される。このとき、熱導体あるいは熱導体が構成する導電ループが、分離磁性部材を通過する磁力線や分離磁性部材から外部に漏れる磁力線と鎖交すると、熱導体に渦電流が流れて渦電流損が発生し、給電の効率が低下する。そのため、熱導体あるいは熱導体が構成する導電ループが磁力線と鎖交しないように、熱導体と分離磁性部材とを同一平面内で平行に配置している。
この非接触給電トランスでは、コア部材がH字形となるように、磁性磁極部材の長さを磁極間コア部の当接幅よりも長くしている。また、磁性磁極部材を接続した磁極間コア部の面の反対面には、熱導体に密着する熱導体連結部を配置している。こうすることで、磁極間コア部を通過する主磁束が磁性磁極部材の側に向かうため、磁性磁極部材と反対の側に配置した熱導体連結部には、磁力線が鎖交しないので、渦電流損が抑制され、給電の効率の低下が防止できる。
20 受電コイル
21 フェライト磁心
22 巻線
31 フェライト磁心
32 巻線
40 フェライトコア
41 磁極部
42 磁極部
50 巻線
61 フェライトコア
62 巻線
63 フェライトコア
64 巻線
65 電磁遮蔽金属板
66 電磁遮蔽金属板
67 主磁束
68 漏洩磁束
69 漏洩磁束
143 磁極間コア部
144 巻回領域
150 巻線
151 巻枠
180 フェライト磁極部材
181 下層フェライト板
182 下層フェライト板
243 分離フェライト部材
244 熱導体
245 熱導体連結部
Claims (12)
- 二つの磁極部の間に磁極間コア部を有し、前記磁極間コア部の巻回領域に巻線が巻回される両側巻コイルを含み、
前記磁極間コア部が、
前記二つの磁極部のそれぞれに接続するとともに、相互間に隙間を空けて並行に配置された複数の分離磁性部材と、
前記複数の分離磁性部材が形成する平面内で前記分離磁性部材に接するように該分離磁性部材と交互に配置された熱導体と、
を備え、
前記分離磁性部材で発生した熱が、前記熱導体を通じて前記磁極間コア部の巻回領域の外側に導出され放熱される非接触給電トランス。 - 請求項1に記載の非接触給電トランスであって、
前記磁極間コア部の巻回領域から外れた両端部に、前記熱導体に密着する熱導体連結部がそれぞれ配置され、前記熱導体を通じて導出された熱が前記熱導体連結部を介して放熱される非接触給電トランス。 - 請求項2に記載の非接触給電トランスであって、
前記二つの磁極部が、該磁極部に接続される前記磁極間コア部の幅よりも長い磁性磁極部材で構成され、前記磁極間コア部の一方の面の巻回領域から外れた両端部が、前記磁性磁極部材の長手方向の中間位置にそれぞれ接続され、前記分離磁性部材の各々と二つの前記磁性磁極部材とが接続され、前記磁極間コア部の他方の面の巻回領域から外れた両端部に前記熱導体連結部がそれぞれ配置され、前記熱導体を通じて導出された熱が前記熱導体連結部を介して放熱される非接触給電トランス。 - 請求項2または3に記載の非接触給電トランスであって、
前記熱導体連結部が、相手コイルとの非対向面側に設置された電磁遮蔽金属板に接続されている非接触給電トランス。 - 請求項2から4のいずれか1項に記載の非接触給電トランスであって、
前記熱導体が、前記巻回領域から外れた両端部に配置された前記熱導体連結部の間の中間位置で二分割されている非接触給電トランス。 - 請求項1から5のいずれか1項に記載の非接触給電トランスであって、
前記熱導体が、アルミニウムまたは銅の棒状体である非接触給電トランス。 - 請求項1から5のいずれか1項に記載の非接触給電トランスであって、
前記熱導体がパイプ構造を有し、その中を気体または液体が流れる非接触給電トランス。 - 請求項7に記載の非接触給電トランスであって、
前記パイプ構造がヒートパイプの一部である非接触給電トランス。 - 請求項4に記載の非接触給電トランスであって、
前記電磁遮蔽金属板を冷却する放熱フィンまたは送風ファンが設けられている非接触給電トランス。 - 請求項1から9のいずれか1項に記載の非接触給電トランスであって、
前記磁極部及び磁極間コア部の磁性体がフェライトである非接触給電トランス。 - 請求項1から9のいずれか1項に記載の非接触給電トランスであって、
前記磁極部及び磁極間コア部の磁性体の一部にアモルファスコアが用いられている非接触給電トランス。 - 請求項1から11のいずれか1項に記載の非接触給電トランスであって、
トランスの定格電力が10kW以上である非接触給電トランス。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/405,022 US9406429B2 (en) | 2012-06-05 | 2013-06-05 | Contactless power transfer transformer |
EP13800225.8A EP2858079B1 (en) | 2012-06-05 | 2013-06-05 | Contactless power transfer transformer |
CN201380029282.1A CN104335303B (zh) | 2012-06-05 | 2013-06-05 | 非接触供电变压器 |
JP2014520025A JP6147741B2 (ja) | 2012-06-05 | 2013-06-05 | 非接触給電トランス |
HK15106449.7A HK1206141A1 (en) | 2012-06-05 | 2015-07-07 | Contactless feeding transformer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012128459 | 2012-06-05 | ||
JP2012-128459 | 2012-06-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013183665A1 true WO2013183665A1 (ja) | 2013-12-12 |
Family
ID=49712054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/065572 WO2013183665A1 (ja) | 2012-06-05 | 2013-06-05 | 非接触給電トランス |
Country Status (6)
Country | Link |
---|---|
US (1) | US9406429B2 (ja) |
EP (1) | EP2858079B1 (ja) |
JP (2) | JP6147741B2 (ja) |
CN (1) | CN104335303B (ja) |
HK (1) | HK1206141A1 (ja) |
WO (1) | WO2013183665A1 (ja) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015155835A1 (ja) * | 2014-04-08 | 2015-10-15 | 日産自動車株式会社 | 非接触給電用コイル |
WO2015155836A1 (ja) * | 2014-04-08 | 2015-10-15 | 日産自動車株式会社 | 非接触給電用コイル |
WO2015155834A1 (ja) * | 2014-04-08 | 2015-10-15 | 日産自動車株式会社 | 非接触給電用コイル |
JP2017535058A (ja) * | 2014-08-26 | 2017-11-24 | ボンバルディアー プリモーフ ゲゼルシャフト ミット ベシュレンクテル ハフツングBombardier Primove GmbH | 磁場を受信し、磁気誘導によって電気エネルギーを生み出すための、具体的には車両によって使用される、受信装置 |
JP6276349B1 (ja) * | 2016-08-30 | 2018-02-07 | 国立大学法人埼玉大学 | 非接触給電装置及び非接触給電装置用電力伝送コイルユニット |
JPWO2016162965A1 (ja) * | 2015-04-08 | 2018-03-01 | 日産自動車株式会社 | 非接触電力伝送用コイルユニット |
CN109878360A (zh) * | 2019-03-13 | 2019-06-14 | 上海蔚来汽车有限公司 | 散热控制方法、装置、充电车以及计算机可读存储介质 |
JP2020022267A (ja) * | 2018-07-31 | 2020-02-06 | パナソニックIpマネジメント株式会社 | 受電装置、送電装置および水中給電システム |
WO2020045661A1 (ja) | 2018-08-30 | 2020-03-05 | 大日本印刷株式会社 | 電力伝送装置、送電装置及び受電装置並びに電力伝送システム |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6476721B2 (ja) * | 2014-10-10 | 2019-03-06 | 株式会社Ihi | 受電コイル装置および非接触給電システム |
DE102015006307B4 (de) * | 2015-05-16 | 2021-03-18 | Audi Ag | Ladevorrichtung zum induktiven Laden eines elektrischen Energiespeichers eines Kraftfahrzeugs und Verfahren zum Betreiben einer Ladevorrichtung |
CN105405622B (zh) * | 2015-12-31 | 2017-10-03 | 浙江大学 | 一种用于电动汽车无线充电的松散耦合变压器装置 |
DE102017206988A1 (de) | 2017-04-26 | 2018-10-31 | Mahle Lnternational Gmbh | Akkumulatoranordnung |
DE102017207266A1 (de) | 2017-04-28 | 2018-10-31 | Mahle International Gmbh | Induktionsladevorrichtung |
DE102019209141A1 (de) * | 2019-06-25 | 2020-12-31 | Mahle International Gmbh | Verfahren zur Herstellung einer induktiven Ladeeinrichtung |
CN114342019A (zh) * | 2019-09-03 | 2022-04-12 | 日本制铁株式会社 | 卷绕铁芯 |
KR20210061719A (ko) * | 2019-11-20 | 2021-05-28 | 에스케이씨 주식회사 | 무선충전 패드, 무선충전 장치, 및 이를 포함하는 전기 자동차 |
DE102022213359A1 (de) * | 2022-12-09 | 2024-06-20 | Mahle International Gmbh | Induktionsladevorrichtung |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04134815U (ja) * | 1991-06-04 | 1992-12-15 | 富士通株式会社 | トランス実装構造 |
JP2004014773A (ja) * | 2002-06-06 | 2004-01-15 | Matsushita Electric Ind Co Ltd | フェライトコアとそのフェライトコアを用いた磁界発生装置、及び磁界発生装置の製造方法 |
JP2007180224A (ja) * | 2005-12-27 | 2007-07-12 | Toyota Motor Corp | リアクトルの冷却構造および電気機器ユニット |
JP2008087733A (ja) | 2006-10-05 | 2008-04-17 | Showa Aircraft Ind Co Ltd | 非接触給電装置 |
JP2009027025A (ja) * | 2007-07-20 | 2009-02-05 | Seiko Epson Corp | コイルユニット及び電子機器 |
JP2010172084A (ja) | 2009-01-21 | 2010-08-05 | Saitama Univ | 非接触給電装置 |
JP2011050127A (ja) | 2009-08-25 | 2011-03-10 | Saitama Univ | 非接触給電装置 |
WO2011030531A1 (ja) * | 2009-09-11 | 2011-03-17 | Fdk株式会社 | 大電力用インダクタンス装置 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4718012U (ja) * | 1971-03-30 | 1972-10-31 | ||
JPS59125819U (ja) * | 1983-02-09 | 1984-08-24 | シャープ株式会社 | トランス装置 |
JPH02129716U (ja) * | 1988-04-20 | 1990-10-25 | ||
JPH06225482A (ja) * | 1993-01-26 | 1994-08-12 | Matsushita Electric Works Ltd | 給電装置 |
JPH10261534A (ja) * | 1997-03-21 | 1998-09-29 | Sumitomo Wiring Syst Ltd | 電気自動車用充電システム |
JPH11238638A (ja) * | 1998-02-23 | 1999-08-31 | Toyota Autom Loom Works Ltd | 非接触型充電装置 |
KR100318670B1 (ko) * | 1999-05-27 | 2002-01-04 | 윤종용 | 방열 리브를 가지는 고압 트랜스포머 |
JP2002203726A (ja) * | 2001-01-05 | 2002-07-19 | Toyota Industries Corp | 磁性コア |
JP2002343655A (ja) * | 2001-05-18 | 2002-11-29 | Ishikawajima Harima Heavy Ind Co Ltd | 高電圧大電流用磁気結合コネクタ |
JP2003142327A (ja) * | 2001-10-31 | 2003-05-16 | Furukawa Electric Co Ltd:The | 非接触給電装置 |
US7295092B2 (en) * | 2002-12-19 | 2007-11-13 | Cooper Technologies Company | Gapped core structure for magnetic components |
US8947186B2 (en) * | 2008-09-27 | 2015-02-03 | Witricity Corporation | Wireless energy transfer resonator thermal management |
KR101824929B1 (ko) * | 2010-09-14 | 2018-02-02 | 위트리시티 코포레이션 | 무선 에너지 분산 시스템 |
JP5562804B2 (ja) * | 2010-11-02 | 2014-07-30 | 昭和飛行機工業株式会社 | インダクタンス可変の非接触給電装置 |
-
2013
- 2013-06-05 US US14/405,022 patent/US9406429B2/en not_active Expired - Fee Related
- 2013-06-05 JP JP2014520025A patent/JP6147741B2/ja active Active
- 2013-06-05 WO PCT/JP2013/065572 patent/WO2013183665A1/ja active Application Filing
- 2013-06-05 CN CN201380029282.1A patent/CN104335303B/zh not_active Expired - Fee Related
- 2013-06-05 EP EP13800225.8A patent/EP2858079B1/en not_active Not-in-force
-
2015
- 2015-07-07 HK HK15106449.7A patent/HK1206141A1/xx not_active IP Right Cessation
-
2016
- 2016-12-13 JP JP2016241691A patent/JP6400663B2/ja active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04134815U (ja) * | 1991-06-04 | 1992-12-15 | 富士通株式会社 | トランス実装構造 |
JP2004014773A (ja) * | 2002-06-06 | 2004-01-15 | Matsushita Electric Ind Co Ltd | フェライトコアとそのフェライトコアを用いた磁界発生装置、及び磁界発生装置の製造方法 |
JP2007180224A (ja) * | 2005-12-27 | 2007-07-12 | Toyota Motor Corp | リアクトルの冷却構造および電気機器ユニット |
JP2008087733A (ja) | 2006-10-05 | 2008-04-17 | Showa Aircraft Ind Co Ltd | 非接触給電装置 |
JP2009027025A (ja) * | 2007-07-20 | 2009-02-05 | Seiko Epson Corp | コイルユニット及び電子機器 |
JP2010172084A (ja) | 2009-01-21 | 2010-08-05 | Saitama Univ | 非接触給電装置 |
JP2011050127A (ja) | 2009-08-25 | 2011-03-10 | Saitama Univ | 非接触給電装置 |
WO2011030531A1 (ja) * | 2009-09-11 | 2011-03-17 | Fdk株式会社 | 大電力用インダクタンス装置 |
Non-Patent Citations (3)
Title |
---|
See also references of EP2858079A4 |
TOMOHIRO YAMANAKA ET AL.: "A Heat Dissipation Method of H-shaped Large Capacity Contactless Power Transformers for Electric Vehicles", HEISEI 25 NEN THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN JIDOSHA KENKYUKAI SHIRYO, 15 January 2013 (2013-01-15), pages 31 - 36, XP008175461 * |
TOMOHIRO YAMANAKA ET AL.: "Contactless Power Transfer System of Electric Vehicle Rapid Charger", HEISEI 23 NEN THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN SANGYO OYO BUMON TAIKAI RONBUNSHU, 6 September 2011 (2011-09-06), pages II-407 - II-412, XP055176292 * |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106165246B (zh) * | 2014-04-08 | 2018-09-11 | 日产自动车株式会社 | 非接触供电用线圈 |
WO2015155834A1 (ja) * | 2014-04-08 | 2015-10-15 | 日産自動車株式会社 | 非接触給電用コイル |
WO2015155835A1 (ja) * | 2014-04-08 | 2015-10-15 | 日産自動車株式会社 | 非接触給電用コイル |
CN106165246A (zh) * | 2014-04-08 | 2016-11-23 | 日产自动车株式会社 | 非接触供电用线圈 |
US10250071B2 (en) | 2014-04-08 | 2019-04-02 | Nissan Motor Co., Ltd. | Wireless power supply coil |
WO2015155836A1 (ja) * | 2014-04-08 | 2015-10-15 | 日産自動車株式会社 | 非接触給電用コイル |
JPWO2015155835A1 (ja) * | 2014-04-08 | 2017-04-13 | 日産自動車株式会社 | 非接触給電用コイル |
JP2017535058A (ja) * | 2014-08-26 | 2017-11-24 | ボンバルディアー プリモーフ ゲゼルシャフト ミット ベシュレンクテル ハフツングBombardier Primove GmbH | 磁場を受信し、磁気誘導によって電気エネルギーを生み出すための、具体的には車両によって使用される、受信装置 |
US10304617B2 (en) | 2015-04-08 | 2019-05-28 | Nissan Motor Co., Ltd. | Coil unit for contactless power transmission |
JPWO2016162965A1 (ja) * | 2015-04-08 | 2018-03-01 | 日産自動車株式会社 | 非接触電力伝送用コイルユニット |
JP6276349B1 (ja) * | 2016-08-30 | 2018-02-07 | 国立大学法人埼玉大学 | 非接触給電装置及び非接触給電装置用電力伝送コイルユニット |
JP2020022267A (ja) * | 2018-07-31 | 2020-02-06 | パナソニックIpマネジメント株式会社 | 受電装置、送電装置および水中給電システム |
JP7117540B2 (ja) | 2018-07-31 | 2022-08-15 | パナソニックIpマネジメント株式会社 | 受電装置および水中給電システム |
US11569689B2 (en) | 2018-07-31 | 2023-01-31 | Panasonic Intellectual Property Management Co., Ltd. | Power receiving device, power transmitting device, and underwater power supply system |
WO2020045661A1 (ja) | 2018-08-30 | 2020-03-05 | 大日本印刷株式会社 | 電力伝送装置、送電装置及び受電装置並びに電力伝送システム |
US11452240B2 (en) | 2018-08-30 | 2022-09-20 | Dai Nippon Printing Co., Ltd | Power transfer apparatus, power transmission apparatus, power reception apparatus, and power transfer system |
CN109878360A (zh) * | 2019-03-13 | 2019-06-14 | 上海蔚来汽车有限公司 | 散热控制方法、装置、充电车以及计算机可读存储介质 |
Also Published As
Publication number | Publication date |
---|---|
EP2858079A1 (en) | 2015-04-08 |
CN104335303A (zh) | 2015-02-04 |
EP2858079A4 (en) | 2016-02-24 |
US20150137925A1 (en) | 2015-05-21 |
HK1206141A1 (en) | 2015-12-31 |
JP6147741B2 (ja) | 2017-06-14 |
JPWO2013183665A1 (ja) | 2016-02-01 |
JP2017103461A (ja) | 2017-06-08 |
US9406429B2 (en) | 2016-08-02 |
JP6400663B2 (ja) | 2018-10-03 |
CN104335303B (zh) | 2017-10-24 |
EP2858079B1 (en) | 2017-11-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6400663B2 (ja) | 非接触給電トランス | |
JP5921839B2 (ja) | 非接触給電トランス | |
KR102086355B1 (ko) | 선형 전자기 장치 | |
JP6475684B2 (ja) | コイルユニット | |
JP5813973B2 (ja) | 非接触給電用コイル装置 | |
JP5923916B2 (ja) | 非接触給電装置 | |
JP6303684B2 (ja) | コイルユニットおよびワイヤレス電力伝送装置 | |
JP6299320B2 (ja) | コイルユニットおよびワイヤレス電力伝送装置 | |
JP6318874B2 (ja) | リアクトル | |
JPWO2013176152A1 (ja) | 移動体用非接触給電トランス | |
US20140368059A1 (en) | Transformer, electronic apparatus, and method for controlling transformer | |
JP6665454B2 (ja) | コイル装置及びコイルシステム | |
JP6179160B2 (ja) | ワイヤレス電力伝送装置 | |
JP2015106581A (ja) | 送電コイルユニット及びワイヤレス電力伝送装置 | |
CN111584220A (zh) | 一种大功率无线充电磁耦合机构及其电能传输*** | |
KR101066144B1 (ko) | 변압기 | |
JP6276349B1 (ja) | 非接触給電装置及び非接触給電装置用電力伝送コイルユニット | |
US20210327629A1 (en) | Common mode choke coil | |
KR100996606B1 (ko) | 대전력 고주파 유도 가열 장치용 고주파 케이블 | |
JP2008186904A (ja) | リアクトルおよび空調機 | |
JP6035155B2 (ja) | 非接触給電トランスのコイル装置 | |
EP4099346A1 (en) | Helicoidal guide for the cooling of a medium-frequency transformer | |
KR20100026408A (ko) | 대전력 고주파 유도 가열 장치 | |
JP6383086B2 (ja) | インダクタユニット及び電動車両 | |
CN103165266A (zh) | Esp大功率串联谐振电感 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13800225 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2014520025 Country of ref document: JP Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2013800225 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2013800225 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14405022 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |