WO2014156014A1 - Contactless charging device - Google Patents

Contactless charging device Download PDF

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Publication number
WO2014156014A1
WO2014156014A1 PCT/JP2014/001357 JP2014001357W WO2014156014A1 WO 2014156014 A1 WO2014156014 A1 WO 2014156014A1 JP 2014001357 W JP2014001357 W JP 2014001357W WO 2014156014 A1 WO2014156014 A1 WO 2014156014A1
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WO
WIPO (PCT)
Prior art keywords
coil
power
power supply
shield
subcoil
Prior art date
Application number
PCT/JP2014/001357
Other languages
French (fr)
Japanese (ja)
Inventor
則明 朝岡
修 大橋
剛 西尾
正剛 小泉
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Publication of WO2014156014A1 publication Critical patent/WO2014156014A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • 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
    • B60L53/126—Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
    • 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
    • B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
    • B60L53/36—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles by positioning the vehicle
    • 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
    • H01F27/36—Electric or magnetic shields or screens
    • 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
    • H01F27/38—Auxiliary core members; Auxiliary coils or windings
    • 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
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • 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
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • 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
    • B60L2210/00—Converter types
    • B60L2210/30—AC to DC converters
    • 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
    • B60L2210/00—Converter types
    • B60L2210/40—DC to AC converters
    • 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
    • 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
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/10—Emission reduction
    • B60L2270/14—Emission reduction of noise
    • B60L2270/147—Emission reduction of noise electro magnetic [EMI]
    • 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
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • 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 charging device used for non-contact charging using electromagnetic force.
  • plug-in HEVs Hybrid Electric Vehicles
  • EVs Electric Vehicles
  • non-contact charging using electromagnetic force for example, an electromagnetic induction method or a magnetic resonance method (magnetic resonance method)
  • electromagnetic force for example, an electromagnetic induction method or a magnetic resonance method (magnetic resonance method)
  • Patent Document 1 reduces the leakage magnetic field and unnecessary radiation by surrounding the coil with a rectangular parallelepiped shield (shield box) made of a material having an electromagnetic wave shielding effect.
  • An object of the present invention is to provide a non-contact charging device capable of reducing heat generation and reducing a leakage magnetic field and unnecessary radiation.
  • a non-contact charging device is a non-contact charging device used for charging using electromagnetic force, and includes a coil that generates an electromagnetic wave and a sub-coil that collects the electromagnetic wave as electric energy. Take the configuration.
  • the present invention can reduce heat generation and reduce leakage magnetic field and unnecessary radiation.
  • the block diagram which shows the structural example of the charging system which concerns on embodiment of this invention The block diagram which shows the structural example of the electric power feeding part and power receiving part which concern on embodiment of this invention
  • the block diagram which shows the structural example of the sub power receiving part which concerns on embodiment of this invention The figure explaining the example of arrangement
  • FIG. 1 is a block diagram showing a configuration of a charging system 100 according to an embodiment of the present invention.
  • the charging system 100 includes a vehicle 1, a power feeding device 2, a power receiving device 3, and a storage battery 4.
  • the vehicle 1 has a power receiving device 3 and a storage battery 4 and travels using the storage battery 4 as a power source.
  • the vehicle 1 is an automobile that runs on the power of the storage battery 4 such as PEV (Plug-in Electric Vehicle) or EV (Electric Vehicle), for example.
  • PEV Plug-in Electric Vehicle
  • EV Electric Vehicle
  • the power feeding device 2 is provided in a parking space, for example, and feeds power to the power receiving device 3 while the vehicle 1 is parked. Details of the power supply device 2 will be described later.
  • the power receiving device 3 supplies power supplied from the power supply device 2 to the storage battery 4. Details of the power receiving device 3 will be described later.
  • the load 34 is provided in the power receiving device 3, but the load 34 may be provided outside the power receiving device 3 or in the sub power receiving unit 33.
  • the storage battery 4 stores the power supplied by the power receiving device 3.
  • the power feeding device 2 and the power receiving device 3 are used for non-contact charging using electromagnetic force, they can be called “non-contact charging devices”.
  • the present invention can be applied not only to the electromagnetic induction method but also to the magnetic resonance method (magnetic field resonance method).
  • the power feeding device 2 includes a power feeding side control unit 20, a power feeding unit 21, and a power feeding side communication unit 22.
  • the power supply side communication unit 22 receives a power supply start signal or a power supply stop signal from the vehicle side communication unit 32.
  • the power supply side communication unit 22 outputs the received power supply start signal or power supply stop signal to the power supply side control unit 20.
  • the power supply side control unit 20 controls the power supply unit 21 to start power supply in accordance with the power supply start signal input from the power supply side communication unit 22.
  • the power supply side control unit 20 controls the power supply unit 21 to stop power supply in accordance with the power supply stop signal input from the power supply side communication unit 22.
  • the power supply side control unit 20 may control not only the start / stop of power supply in accordance with an instruction from the vehicle 1 but also the start / stop of power supply based on its own judgment. That is, the power supply side control unit 20 confirms that the power reception coil exists at a position facing the power supply coil, and then controls to start power supply, and outputs a power supply start signal to the power supply side communication unit 22. In addition, if the power supply side control unit 20 determines that the power supply is not normally performed, the power supply side control unit 20 performs control so as to stop the power supply, and outputs a power supply stop signal to the power supply side communication unit 22.
  • the power feeding unit 21 is installed or buried on the ground so as to be exposed from the ground surface g.
  • the power feeding unit 21 has a power feeding coil (not shown).
  • the power feeding unit 21 feeds power to the power receiving unit 31 using electromagnetic force by supplying a current having a predetermined frequency to the power feeding coil according to the control of the power feeding side control unit 20.
  • This power supply is performed by, for example, an electromagnetic induction method or a magnetic resonance method (magnetic resonance method). Details of the power supply unit 21 and the power supply coil will be described later.
  • the power reception device 3 includes a vehicle side control unit 30, a power reception unit 31, a vehicle side communication unit 32, a sub power reception unit 33, and a load 34.
  • the vehicle side communication unit 32 generates a power supply start signal or a power supply stop signal according to the control of the vehicle side control unit 30 and transmits the generated power supply start signal or power supply stop signal to the power supply side communication unit 22. Further, the vehicle-side communication unit 32 may receive a power supply start signal or a power supply stop signal from the power supply side communication unit 22 when the power supply side control unit 20 controls the start / stop of power supply by its own judgment. is there.
  • the vehicle-side control unit 30 controls the power reception unit 31, the vehicle-side communication unit 32, and the sub power reception unit 33 to perform various processes associated with power supply or various processes associated with power supply stop.
  • the power reception unit 31 is provided at the bottom of the vehicle 1 and has a power reception coil (not shown), and faces the power supply coil of the power supply unit 21 in a non-contact state when supplying power to the storage battery 4.
  • the power reception unit 31 supplies the storage battery 4 with the power supplied from the power supply unit 21 to the power reception coil according to the control of the vehicle-side control unit 30.
  • the sub power receiving unit 33 is provided at the bottom of the vehicle 1 similarly to the power receiving unit 31, and has a sub coil (not shown).
  • the subcoil is provided in the vicinity of the power receiving coil of the power receiving unit 31.
  • the sub power receiving unit 33 collects about several W (watts) of electric power (electric energy) from the power feeding unit 21 using the sub coil.
  • the recovered electric power is electric power that has conventionally been heat lost by a shield surrounding the coil, or electric power that has affected the surroundings as a leakage magnetic field and unnecessary radiation.
  • the sub power receiving unit 33 supplies the collected power to the load 34 according to the control of the vehicle side control unit 30.
  • the sub power receiving unit 33 operates in accordance with the control of the vehicle side control unit 30, similarly to the power receiving unit 31.
  • one sub power receiving unit 33 is provided, but two or more sub power receiving units 33 may be provided.
  • the sub power receiving unit 33 is provided in the power receiving device 3 and collects power in the power receiving unit 31.
  • the sub power receiving unit 33 is provided in the power feeding device 2 and collects power in the power feeding unit 21. It may be.
  • the subcoil is provided in the vicinity of the power supply coil of the power supply unit 31. Then, the sub power receiving unit 33 collects about several W (watts) of power from the power feeding unit 21 using the sub coil.
  • the sub power receiving unit 33 operates according to the control of the power supply side control unit 20, and supplies the recovered power to a load (not shown), for example.
  • the load 34 is a predetermined device that consumes the power collected by the sub power receiving unit 33.
  • the load 34 include a device of the vehicle control unit 30 or the power supply control unit 20 (for example, a microcomputer in a control board).
  • the load 34 may be a heat dissipation resistor, for example.
  • the load 34 is installed in the vicinity of the cooling device provided outside the power receiving device 3 and inside the vehicle 1 or outside the power feeding device 2. In this way, the electric power collected by the sub power receiving unit 33 is moved to another place where the human body is less likely to touch and is dissipated there.
  • the electric power collected by the sub power receiving unit 33 provided in the power receiving device 3 is consumed by a load 34 (for example, a device or a heat radiation resistor of the vehicle side control unit 30) provided on the vehicle side.
  • the power collected by the sub power receiving unit 33 provided in the power feeding device 2 is consumed by a load 34 (for example, a device or a heat radiation resistor of the power feeding side control unit 20) provided on the power feeding device side.
  • FIG. 2 is a block diagram illustrating configurations of the power feeding unit 21 and the power receiving unit 31 according to the embodiment of the present invention.
  • the power feeding unit 21 includes a shield 210, a power feeding coil 211, a power feeding side inverter 212, and a power supply circuit 213.
  • the power supply circuit 213 is a power supply that generates direct current from a household power supply.
  • the power supply circuit 213 generates a DC power supply from AC electric energy of about 100 to 240 V, for example, and outputs it to the power supply side inverter 212.
  • the power feeding side inverter 212 further generates high frequency AC electric energy from the DC electric energy output from the power supply circuit 213 according to the control of the power feeding side control unit 20 in FIG.
  • the feeding coil 211 generates an electromagnetic wave due to the electric energy supplied from the feeding-side inverter 212, and supplies power to the receiving coil 311 of the power receiving unit 31.
  • the shield 210 (an example of a shield member) is a rectangular parallelepiped housing that houses the feeding coil 211 and is made of a material having an electromagnetic wave shielding effect. Thereby, the shield 210 shields electromagnetic waves generated from the feeding coil 211.
  • the power receiving unit 31 includes a shield 310, a power receiving coil 311, a rectifier 312, and a filter circuit 313.
  • the shield 310 (an example of a shield part) is a rectangular parallelepiped housing that houses the power receiving coil 311 and is made of a material having an electromagnetic wave shielding effect. Thereby, the shield 310 shields electromagnetic waves generated from the power receiving coil 311.
  • the power receiving coil 311 supplies the power supplied from the power feeding coil 211 of the power feeding unit 21 to the rectifier 312.
  • the rectifier 312 converts the power from the power receiving coil 311 into DC power and outputs it to the filter circuit 313.
  • the filter circuit 313 filters the power from the rectifier 312 and outputs it to the storage battery 4. As a result, the current output from the filter circuit 313 is supplied to the storage battery 4.
  • the power supply coil 211 and the power reception coil 311 are either a solenoid coil having a winding or a spiral coil.
  • each application example will be described with reference to FIGS. 3A and 3B.
  • FIG. 3A is a perspective view showing a case where a solenoid coil is applied to the power feeding coil 211 and the power receiving coil 311.
  • the power supply coil 211 that is a solenoid coil is referred to as “power supply coil 211a”
  • the power reception coil 311 that is a solenoid coil is referred to as “power reception coil 311a”.
  • the feeding coil 211a is housed in the shield 210
  • the power receiving coil 311a is housed in the shield 310, respectively.
  • the shield 210 and the shield 310 are rectangular parallelepiped, and have two bottom surfaces having a maximum area and four side surfaces. Of the two bottom surfaces of the shield 210, the surface facing the power receiving coil 311a is open. Similarly, of the two bottom surfaces of the shield 310, the surface facing the feeding coil 211a is open. Further, in shield 310, two of the four side surfaces are shown as side surface A and side surface C, but the surface in a positional relationship parallel to side surface A is referred to as side surface B and is opposed to side surface C. The planes that are parallel to each other are called side faces D (the same applies to the shield 210).
  • FIG. 3A when power supply using an electromagnetic force is performed between the power supply coil 211a and the power reception coil 311a, a line of magnetic force f1 (an example of an electromagnetic wave) is generated.
  • a line of magnetic force f1 an example of an electromagnetic wave
  • FIG. 3A only one magnetic field line f1 is shown, but there are many magnetic field lines f1.
  • the magnetic force line f ⁇ b> 1 passes through the side surface A, the side surface B, the side surface C, and the side surface D. And especially the electromagnetic waves of the side A and the side B direction are strong. Therefore, as will be described later with reference to FIG. 6A, it is optimal to arrange the subcoils on the side surface A and the side surface B.
  • FIG. 3B is a perspective view showing a case where a spiral coil is applied to the feeding coil 211 and the receiving coil 311.
  • the power feeding coil 211 that is a spiral coil is referred to as “power feeding coil 211b”
  • the power receiving coil 311 that is a spiral coil is referred to as “power receiving coil 311b”.
  • the feeding coil 211b is accommodated in the shield 210, and the receiving coil 311b is accommodated in the shield 310. Since each surface of the shield 210 and the shield 310 has already been described with reference to FIG. 3A, description thereof is omitted here.
  • FIG. 3B when power supply using electromagnetic force is performed between the power supply coil 211b and the power reception coil 311b, a magnetic force line f2 (an example of an electromagnetic wave) is generated.
  • a magnetic force line f2 (an example of an electromagnetic wave) is generated.
  • the magnetic force line f ⁇ b> 2 passes through the side surface A, the side surface B, the side surface C, and the side surface D.
  • the difference in strength of electromagnetic waves in the direction of the side surface A, the side surface B, the side surface C, and the side surface D is small. Therefore, as will be described later with reference to FIG. 7A, it is optimal to arrange the subcoils on the side surface A, side surface B, side surface C, and side surface D.
  • FIG. 4 is a block diagram illustrating a configuration of the sub power receiving unit 33.
  • the sub power receiving unit 33 includes a sub coil 331, a rectifier 332, and a filter circuit 333.
  • the subcoil 331 collects the electric power supplied from the power supply coil 211 of the power supply unit 21 and supplies it to the rectifier 332.
  • the rectifier 332 converts the power from the subcoil 331 into DC power and outputs it to the filter circuit 333.
  • the filter circuit 333 filters the power from the rectifier 332 and outputs it to the load 34.
  • the load 34 operates using the current output from the filter circuit 313.
  • FIG. 5 is a diagram for explaining an arrangement example of the subcoil 331 and the shield 310.
  • the power receiving coil 311a and the magnetic lines of force f1 in FIG. 3A are not shown. That is, FIG. 5 shows an arrangement example of the subcoils 331 when the power receiving coil is a solenoid coil.
  • the opening surfaces of the two subcoils 331 are parallel to the side surface A and the side surface B on the central axis X of the coil winding of the power receiving coil 311a, respectively. Is arranged.
  • the central axis X of the coil winding is illustrated in FIG. 6A.
  • the side surface A and the side surface B are surfaces through which the lines of magnetic force f1 between the feeding coil 211a and the power receiving coil 311a pass.
  • the sub-coil 331 is arranged on the side surface A and the side surface B through which the magnetic lines of force f1 pass, whereby optimal power reception is possible. The reason is that the electromagnetic waves in the direction of the side surface A and the side surface B are strong as described above.
  • the sub-coil 331 arranged as described above receives power from the power feeding unit 21 in the same manner as the power receiving coil 311a.
  • power that has been lost by heat at the shield surrounding the coil, or power that has been lost as leakage magnetic field and unnecessary radiation (power that the receiving coil could not receive) can be recovered by the subcoil 331.
  • ferrite may be provided between the subcoil 331 and the side surface A and between the subcoil 331 and the side surface B. Thereby, compared with the case where a ferrite is not installed, the electromagnetic waves which pass through the side surfaces A and B can be shielded completely.
  • the shield 310 may be formed of reinforced plastic, and the subcoil 331 may be embedded therein. Thereby, the leakage magnetic field and unnecessary radiation during electric power feeding can be reduced.
  • FIG. 6A is a diagram showing the arrangement shown in FIG. FIG. 6A illustrates the arrangement of the power receiving coil 311a.
  • the two subcoils 331 are arranged in parallel to the side surface A and the side surface B through which the magnetic force lines f1 of the power receiving coil 311a pass inside the shield 310, respectively.
  • FIG. 6A the arrangement of the subcoil 331 in the shield 310 is not limited to FIG. 6A.
  • Other examples are shown in FIGS. 6B and 6C.
  • each subcoil 331a having a size larger than the subcoil 331 may be arranged inside the shield 310 so as to surround the central power receiving coil 311a.
  • Each subcoil 331a is arranged in parallel to the side surface in the vicinity.
  • each subcoil 331 and four subcoils 331b smaller in size than the subcoil 331 may be arranged so as to surround the central power receiving coil 311a, respectively.
  • Each subcoil 331 is arranged in parallel to the side surface in the vicinity, and each subcoil 331 b is arranged at the four corners of the shield 310.
  • the subcoil also on the side surface C and the side surface D where electromagnetic waves are weaker than those in the side surface A and side surface B directions, it is possible to further recover power that has been conventionally lost.
  • FIG. 7A is a diagram showing the arrangement of the subcoil 331 from the top surface of the shield 310, as in FIG. 6A.
  • a power receiving coil 311b which is a spiral coil, is disposed in the center of the shield 310.
  • the four subcoils 331 are arranged so as to surround the central power receiving coil 311b, respectively.
  • each subcoil 331 is disposed in parallel to the side surfaces A, B, C, and D.
  • the side surfaces A, B, C, and D are surfaces through which the lines of magnetic force f2 between the power feeding coil 211a and the power receiving coil 311b pass.
  • the sub-coil 331 is disposed on each of the side surfaces A to D through which the magnetic lines of force f2 pass, whereby optimal power reception is possible. The reason is that, as described above, the difference in strength between the electromagnetic waves in the directions of the side surface A, the side surface B, the side surface C, and the side surface D is small.
  • the arrangement of the subcoil 331 is not limited to FIG. 7A, and may be the arrangement shown in FIG. 7B or 7C.
  • the arrangements shown in FIGS. 7B and 7C are the same as the arrangements shown in FIGS. 6B and 6C, respectively, and thus description thereof is omitted here. According to the arrangements shown in FIG. 7B and FIG. 7C, the power that has been conventionally lost can be further recovered by surrounding the power receiving coil 311a with the sub-coil.
  • the power receiving device is characterized in that a subcoil that receives power from the power feeding device is arranged on the surface through which the magnetic lines of force of the coil pass inside the shield.
  • the power receiving apparatus of this Embodiment can reduce heat_generation
  • the subcoil 331 may be accommodated in the shield 210 and disposed around the feeding coil 211 as shown in any of FIGS. 6A to 7C and FIGS. 7A to 7C.
  • the opening surface of the subcoil 331 is arranged in parallel to the side surface of the shield.
  • the subcoil 331 has the coil winding central axis X of the power receiving coil 311a (see FIG. 6A). If it is above, it may not be arranged parallel to the side surface.
  • the power receiving coil or the power feeding coil is a solenoid coil, the sub-coil may not be in a position parallel to the side surface as long as the sub coil is disposed in the vicinity of the side surface A and the side surface B.
  • the sub-coil may not be in a position parallel to the side surface as long as the sub coil is disposed in the vicinity of the side surface A, the side surface B, the side surface C, and the side surface D. Furthermore, the sub-coil does not have to be in a position parallel to the side surface as long as the sub-coil is arranged so as to surround the power receiving coil or the power feeding coil.
  • the shield 210 and the shield 310 are rectangular parallelepiped, but the shape is not limited to this. For example, other prisms or cylinders, or similar shapes may be used.
  • the shield 310 is not only the power receiving coil 311 but also the rectifier 312, the filter circuit 313, the vehicle side control unit 30, the vehicle side communication unit 32, the rectifier 332 of the sub power receiving unit 33, and the filter circuit 333 of the sub power receiving unit 33.
  • any of the loads 34 may be enclosed.
  • the shield 210 includes not only the power feeding coil 211 but also the power feeding side inverter 212, the power supply circuit 213, the power feeding side control unit 20, the power feeding side communication unit 22, the rectifier 332 of the sub power receiving unit 33, and the sub power receiving unit 33. Any one of the filter circuit 333 and the load 34 may be enclosed.
  • the arrangement order may be “receiving coil” ⁇ “subcoil” ⁇ “shield”.
  • Other devices such as the rectifier 312, the filter circuit 313, the vehicle side control unit 30, the vehicle side communication unit 32, the rectifier 332 of the sub power reception unit 33, the filter circuit 333 of the sub power reception unit 33, and the load 34
  • It may be disposed between the “coil” and the “subcoil”, or may be disposed between the “subcoil” and the “shield”. The same applies to the case where the sub-coil is provided on the power feeding device side.
  • the present invention can be applied to, for example, a power receiving device or a power feeding device as a non-contact charging device used for non-contact charging using electromagnetic force.

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

Abstract

This contactless charging device reduces heat generation and can reduce a leakage magnetic field and superfluous radiation. The contactless charging device is used in charging using electromagnetic force, and has: a coil (311a) that generates electromagnetic waves; a shield section (310) that shields the electromagnetic waves; and a subcoil (331) that is disposed on the inside of the shield section (310) and recovers electromagnetic waves as electrical energy. The coil (311a) is a solenoid coil. Also, the subcoil (331) is disposed in the vicinity of two surfaces (A, B) on the central axis (X) of a wound wire of the solenoid coil among the four surfaces (A, B, C, D) that encircle the solenoid coil.

Description

非接触充電装置Non-contact charger
　本発明は、電磁力を利用した非接触充電に用いられる非接触充電装置に関する。 The present invention relates to a non-contact charging device used for non-contact charging using electromagnetic force.
　近年、プラグインＨＥＶ（Hybrid Electric Vehicle：ハイブリッド自動車）またはＥＶ（Electric Vehicle：電気自動車）が普及している。そして、外部電源からＥＶまたはプラグインＨＥＶに搭載された蓄電池へ充電を行う技術として、電磁力（例えば、電磁誘導方式、または磁気共鳴方式（磁界共鳴方式））を利用した非接触充電が知られている。 In recent years, plug-in HEVs (Hybrid Electric Vehicles) or EVs (Electric Vehicles) have become widespread. As a technique for charging a storage battery mounted on an EV or plug-in HEV from an external power source, non-contact charging using electromagnetic force (for example, an electromagnetic induction method or a magnetic resonance method (magnetic resonance method)) is known. ing.
　電磁力を利用した非接触充電では、給電コイルおよび受電コイルを用いるが、給電中にそれらのコイルにて発生する漏洩磁界および不要輻射が問題となる。そこで、例えば特許文献１の技術は、電磁波遮蔽効果のある素材で構成された直方体状のシールド（シールドボックス）によりコイルを囲むことで、漏洩磁界および不要輻射を低減している。 In non-contact charging using electromagnetic force, a power feeding coil and a power receiving coil are used, but leakage magnetic fields and unnecessary radiation generated in those coils during power feeding become a problem. Therefore, for example, the technique of Patent Document 1 reduces the leakage magnetic field and unnecessary radiation by surrounding the coil with a rectangular parallelepiped shield (shield box) made of a material having an electromagnetic wave shielding effect.
特開２０１１－９１９９９号公報JP 2011-91999 A
　しかしながら、特許文献１の技術は、コイルからの電磁波がコイル付近に存在するシールドに当たることにより、シールドにおいて渦電流が発生する。このため、シールドの電気抵抗によって電力（電気エネルギ）を損失し、損失した電力（電気エネルギ）が熱に変わってシールドが発熱する、という課題がある。 However, in the technique of Patent Document 1, an eddy current is generated in the shield when the electromagnetic wave from the coil hits the shield near the coil. For this reason, there is a problem that power (electric energy) is lost due to the electrical resistance of the shield, and the lost power (electric energy) is changed to heat and the shield generates heat.
　本発明の目的は、発熱を低減し、かつ、漏洩磁界および不要輻射を低減できる非接触充電装置を提供することである。 An object of the present invention is to provide a non-contact charging device capable of reducing heat generation and reducing a leakage magnetic field and unnecessary radiation.
　本発明の一態様に係る非接触充電装置は、電磁力を利用した充電に用いられる非接触充電装置であって、電磁波を発生するコイルと、前記電磁波を電気エネルギとして回収するサブコイルと、を有する構成を採る。 A non-contact charging device according to an aspect of the present invention is a non-contact charging device used for charging using electromagnetic force, and includes a coil that generates an electromagnetic wave and a sub-coil that collects the electromagnetic wave as electric energy. Take the configuration.
　本発明は、発熱を低減し、かつ、漏洩磁界および不要輻射を低減できる。 The present invention can reduce heat generation and reduce leakage magnetic field and unnecessary radiation.
本発明の実施の形態に係る充電システムの構成例を示すブロック図The block diagram which shows the structural example of the charging system which concerns on embodiment of this invention 本発明の実施の形態に係る給電部および受電部の構成例を示すブロック図The block diagram which shows the structural example of the electric power feeding part and power receiving part which concern on embodiment of this invention 本発明の実施の形態に係る給電コイルおよび受電コイルにスパイラルコイルを適用した一例を示す斜視図The perspective view which shows an example which applied the spiral coil to the feed coil and receiving coil which concern on embodiment of this invention 本発明の実施の形態に係る給電コイルおよび受電コイルにソレノイドコイルを適用した一例を示す斜視図The perspective view which shows an example which applied the solenoid coil to the feed coil and receiving coil which concern on embodiment of this invention 本発明の実施の形態に係るサブ受電部の構成例を示すブロック図The block diagram which shows the structural example of the sub power receiving part which concerns on embodiment of this invention 本発明の実施の形態に係るサブコイルおよびシールドの配置例を説明する図The figure explaining the example of arrangement | positioning of the subcoil and shield which concern on embodiment of this invention 本発明の実施の形態に係るソレノイドコイルおよびサブコイルの配置例をそれぞれ示す上面図The top view which shows the example of arrangement | positioning of the solenoid coil which concerns on embodiment of this invention, and a subcoil, respectively 本発明の実施の形態に係るスパイラルコイルおよびサブコイルの配置例をそれぞれ示す上面図The top view which shows the example of arrangement | positioning of the spiral coil which concerns on embodiment of this invention, and a subcoil, respectively
　（実施の形態）
　以下、本発明の実施の形態について、図面を参照して説明する。 (Embodiment)
Embodiments of the present invention will be described below with reference to the drawings.
　＜充電システム１００の構成＞
　図１は、本発明の実施の形態に係る充電システム１００の構成を示すブロック図である。 <Configuration of charging system 100>
FIG. 1 is a block diagram showing a configuration of a charging system 100 according to an embodiment of the present invention.
　充電システム１００は、車両１、給電装置２、受電装置３、および蓄電池４を有する。 The charging system 100 includes a vehicle 1, a power feeding device 2, a power receiving device 3, and a storage battery 4.
　車両１は、受電装置３および蓄電池４を有し、蓄電池４を動力源として走行する。車両１は、例えば、ＰＥＶ（Plug-in Electric Vehicle）またはＥＶ（Electric Vehicle）といった蓄電池４の電力で走行する自動車である。 The vehicle 1 has a power receiving device 3 and a storage battery 4 and travels using the storage battery 4 as a power source. The vehicle 1 is an automobile that runs on the power of the storage battery 4 such as PEV (Plug-in Electric Vehicle) or EV (Electric Vehicle), for example.
　給電装置２は、例えば駐車スペースに設けられ、車両１の駐車中に、受電装置３に対して給電する。給電装置２の詳細は後述する。 The power feeding device 2 is provided in a parking space, for example, and feeds power to the power receiving device 3 while the vehicle 1 is parked. Details of the power supply device 2 will be described later.
　受電装置３は、給電装置２から給電される電力を蓄電池４に供給する。受電装置３の詳細は後述する。なお、図１の例では、負荷３４を受電装置３に備える例としているが、負荷３４は、受電装置３外またはサブ受電部３３内に備えるようにしてもよい。 The power receiving device 3 supplies power supplied from the power supply device 2 to the storage battery 4. Details of the power receiving device 3 will be described later. In the example of FIG. 1, the load 34 is provided in the power receiving device 3, but the load 34 may be provided outside the power receiving device 3 or in the sub power receiving unit 33.
　蓄電池４は、受電装置３により供給される電力を蓄える。 The storage battery 4 stores the power supplied by the power receiving device 3.
　このように、給電装置２および受電装置３は、電磁力を利用した非接触充電に用いられるので、「非接触充電装置」ということができる。電磁力を利用した非接触充電としては、電磁誘導方式だけでなく、磁気共鳴方式（磁界共鳴方式）であっても、本発明は適用可能である。 Thus, since the power feeding device 2 and the power receiving device 3 are used for non-contact charging using electromagnetic force, they can be called “non-contact charging devices”. As the non-contact charging using electromagnetic force, the present invention can be applied not only to the electromagnetic induction method but also to the magnetic resonance method (magnetic field resonance method).
　＜給電装置２の構成＞
　給電装置２は、給電側制御部２０、給電部２１、および給電側通信部２２を有する。 <Configuration of power feeding device 2>
The power feeding device 2 includes a power feeding side control unit 20, a power feeding unit 21, and a power feeding side communication unit 22.
　給電側通信部２２は、車両側通信部３２からの給電開始信号または給電停止信号を受信する。給電側通信部２２は、受信した給電開始信号または給電停止信号を給電側制御部２０に出力する。 The power supply side communication unit 22 receives a power supply start signal or a power supply stop signal from the vehicle side communication unit 32. The power supply side communication unit 22 outputs the received power supply start signal or power supply stop signal to the power supply side control unit 20.
　給電側制御部２０は、給電側通信部２２から入力した給電開始信号に従って、給電部２１に対して給電を開始するように制御する。給電側制御部２０は、給電側通信部２２から入力した給電停止信号に従って、給電部２１に対して給電を停止するように制御する。なお、給電側制御部２０は、車両１からの指示に応じて給電の開始／停止を制御するのみならず、自己の判断で給電の開始／停止を制御してもよい。すなわち、給電側制御部２０は、給電コイルと対向する位置に受電コイルが存在することを確認したうえで、給電を開始するように制御し、給電側通信部２２に給電開始信号を出力する。また、給電側制御部２０は、正常に給電できていないことを判断すれば、給電を停止するように制御し、給電側通信部２２に給電停止信号を出力する。 The power supply side control unit 20 controls the power supply unit 21 to start power supply in accordance with the power supply start signal input from the power supply side communication unit 22. The power supply side control unit 20 controls the power supply unit 21 to stop power supply in accordance with the power supply stop signal input from the power supply side communication unit 22. The power supply side control unit 20 may control not only the start / stop of power supply in accordance with an instruction from the vehicle 1 but also the start / stop of power supply based on its own judgment. That is, the power supply side control unit 20 confirms that the power reception coil exists at a position facing the power supply coil, and then controls to start power supply, and outputs a power supply start signal to the power supply side communication unit 22. In addition, if the power supply side control unit 20 determines that the power supply is not normally performed, the power supply side control unit 20 performs control so as to stop the power supply, and outputs a power supply stop signal to the power supply side communication unit 22.
　給電部２１は、地表ｇから露出するように地面上に設置もしくは埋設される。給電部２１は、給電コイル（図示略）を有する。給電部２１は、給電側制御部２０の制御に従って、給電コイルに所定の周波数の電流を供給することにより、電磁力を利用して受電部３１に給電する。この給電は、例えば、電磁誘導方式、もしくは磁気共鳴方式（磁界共鳴方式）にて行われる。給電部２１および給電コイルの詳細は後述する。 The power feeding unit 21 is installed or buried on the ground so as to be exposed from the ground surface g. The power feeding unit 21 has a power feeding coil (not shown). The power feeding unit 21 feeds power to the power receiving unit 31 using electromagnetic force by supplying a current having a predetermined frequency to the power feeding coil according to the control of the power feeding side control unit 20. This power supply is performed by, for example, an electromagnetic induction method or a magnetic resonance method (magnetic resonance method). Details of the power supply unit 21 and the power supply coil will be described later.
　＜受電装置３の構成＞
　受電装置３は、車両側制御部３０、受電部３１、車両側通信部３２、サブ受電部３３、および負荷３４を有する。 <Configuration of power receiving device 3>
The power reception device 3 includes a vehicle side control unit 30, a power reception unit 31, a vehicle side communication unit 32, a sub power reception unit 33, and a load 34.
　車両側通信部３２は、車両側制御部３０の制御に従って、給電開始信号または給電停止信号を生成し、生成した給電開始信号または給電停止信号を給電側通信部２２に送信する。また、車両側通信部３２は、給電側制御部２０が自己の判断で給電の開始／停止を制御した場合には、給電側通信部２２から、給電開始信号または給電停止信号を受信することもある。 The vehicle side communication unit 32 generates a power supply start signal or a power supply stop signal according to the control of the vehicle side control unit 30 and transmits the generated power supply start signal or power supply stop signal to the power supply side communication unit 22. Further, the vehicle-side communication unit 32 may receive a power supply start signal or a power supply stop signal from the power supply side communication unit 22 when the power supply side control unit 20 controls the start / stop of power supply by its own judgment. is there.
　車両側制御部３０は、受電部３１、車両側通信部３２、およびサブ受電部３３に対して、給電に伴う各種処理または給電停止に伴う各種処理を行うように制御する。 The vehicle-side control unit 30 controls the power reception unit 31, the vehicle-side communication unit 32, and the sub power reception unit 33 to perform various processes associated with power supply or various processes associated with power supply stop.
　受電部３１は、車両１の底部に設けられ、受電コイル（図示略）を有するとともに、蓄電池４に給電する際に、給電部２１の給電コイルと非接触状態で対向する。受電部３１は、車両側制御部３０の制御に従って、給電部２１から受電コイルに給電された電力を蓄電池４に供給する。 The power reception unit 31 is provided at the bottom of the vehicle 1 and has a power reception coil (not shown), and faces the power supply coil of the power supply unit 21 in a non-contact state when supplying power to the storage battery 4. The power reception unit 31 supplies the storage battery 4 with the power supplied from the power supply unit 21 to the power reception coil according to the control of the vehicle-side control unit 30.
　サブ受電部３３は、受電部３１と同様に車両１の底部に設けられ、サブコイル（図示略）を有する。サブコイルは、受電部３１の受電コイル付近に設けられる。サブ受電部３３は、サブコイルを用いて、給電部２１からの電力（電気エネルギ）を数Ｗ（ワット）程度回収する。回収した電力は、従来、コイルを囲うシールドで熱損失していた電力、または、漏洩磁界および不要輻射として周囲に影響を及ぼしていた電力である。サブ受電部３３は、車両側制御部３０の制御に従って、回収した電力を負荷３４に供給する。サブ受電部３３は、受電部３１と同様に、車両側制御部３０の制御に従って動作する。 The sub power receiving unit 33 is provided at the bottom of the vehicle 1 similarly to the power receiving unit 31, and has a sub coil (not shown). The subcoil is provided in the vicinity of the power receiving coil of the power receiving unit 31. The sub power receiving unit 33 collects about several W (watts) of electric power (electric energy) from the power feeding unit 21 using the sub coil. The recovered electric power is electric power that has conventionally been heat lost by a shield surrounding the coil, or electric power that has affected the surroundings as a leakage magnetic field and unnecessary radiation. The sub power receiving unit 33 supplies the collected power to the load 34 according to the control of the vehicle side control unit 30. The sub power receiving unit 33 operates in accordance with the control of the vehicle side control unit 30, similarly to the power receiving unit 31.
　なお、図１の例では、サブ受電部３３は、１つ設けられる例としたが、２つ以上設けられてもよい。また、図１の例では、サブ受電部３３は、受電装置３に設けられ、受電部３１における電力を回収する例としたが、給電装置２に設けられ、給電部２１における電力を回収するようにしてもよい。この場合、サブコイルは、給電部３１の給電コイル付近に設けられる。そして、サブ受電部３３は、サブコイルを用いて、給電部２１からの電力を数Ｗ（ワット）程度回収する。サブ受電部３３は、給電側制御部２０の制御に従って動作し、例えば、回収した電力を負荷（図示略）に供給する。 In the example of FIG. 1, one sub power receiving unit 33 is provided, but two or more sub power receiving units 33 may be provided. In the example of FIG. 1, the sub power receiving unit 33 is provided in the power receiving device 3 and collects power in the power receiving unit 31. However, the sub power receiving unit 33 is provided in the power feeding device 2 and collects power in the power feeding unit 21. It may be. In this case, the subcoil is provided in the vicinity of the power supply coil of the power supply unit 31. Then, the sub power receiving unit 33 collects about several W (watts) of power from the power feeding unit 21 using the sub coil. The sub power receiving unit 33 operates according to the control of the power supply side control unit 20, and supplies the recovered power to a load (not shown), for example.
　負荷３４は、サブ受電部３３にて回収した電力を消費する所定のデバイスである。負荷３４は、例えば、車両側制御部３０または給電側制御部２０のデバイス（例えば、制御基板内にあるマイコン）などが挙げられる。または、負荷３４は、例えば、放熱抵抗であってもよい。ただし、この場合、負荷３４の設置場所は、受電装置３外で車両１内、または、給電装置２外に備えられている冷却装置付近とする。このように、サブ受電部３３で回収した電力は、人体の触れる可能性が低い別の場所へ移され、そこで放熱させられる。なお、受電装置３に設けられたサブ受電部３３で回収した電力は、車両側に設けられた負荷３４（例えば、車両側制御部３０のデバイスまたは放熱抵抗）で消費される。また、給電装置２に設けられたサブ受電部３３で回収した電力は、給電装置側に設けられた負荷３４（例えば、給電側制御部２０のデバイスまたは放熱抵抗）で消費される。 The load 34 is a predetermined device that consumes the power collected by the sub power receiving unit 33. Examples of the load 34 include a device of the vehicle control unit 30 or the power supply control unit 20 (for example, a microcomputer in a control board). Alternatively, the load 34 may be a heat dissipation resistor, for example. However, in this case, the load 34 is installed in the vicinity of the cooling device provided outside the power receiving device 3 and inside the vehicle 1 or outside the power feeding device 2. In this way, the electric power collected by the sub power receiving unit 33 is moved to another place where the human body is less likely to touch and is dissipated there. The electric power collected by the sub power receiving unit 33 provided in the power receiving device 3 is consumed by a load 34 (for example, a device or a heat radiation resistor of the vehicle side control unit 30) provided on the vehicle side. In addition, the power collected by the sub power receiving unit 33 provided in the power feeding device 2 is consumed by a load 34 (for example, a device or a heat radiation resistor of the power feeding side control unit 20) provided on the power feeding device side.
　＜給電部２１および受電部３１の構成＞
　図２は、本発明の実施の形態に係る給電部２１および受電部３１の構成を示すブロック図である。 <Configuration of the power feeding unit 21 and the power receiving unit 31>
FIG. 2 is a block diagram illustrating configurations of the power feeding unit 21 and the power receiving unit 31 according to the embodiment of the present invention.
　給電部２１は、シールド２１０、給電コイル２１１、給電側インバータ２１２、および電源回路２１３を有する。 The power feeding unit 21 includes a shield 210, a power feeding coil 211, a power feeding side inverter 212, and a power supply circuit 213.
　電源回路２１３は、家庭用電源から直流を発生させる電源である。電源回路２１３は、例えば１００～２４０Ｖ程度の交流の電気エネルギから直流電源を生成し、給電側インバータ２１２へ出力する。 The power supply circuit 213 is a power supply that generates direct current from a household power supply. The power supply circuit 213 generates a DC power supply from AC electric energy of about 100 to 240 V, for example, and outputs it to the power supply side inverter 212.
　給電側インバータ２１２は、電源回路２１３から出力された直流の電気エネルギを、図１の給電側制御部２０の制御に従って、さらに高周波交流の電気エネルギを生成して、給電コイル２１１に供給する。 The power feeding side inverter 212 further generates high frequency AC electric energy from the DC electric energy output from the power supply circuit 213 according to the control of the power feeding side control unit 20 in FIG.
　給電コイル２１１は、給電側インバータ２１２から供給された電気エネルギによって電磁波が生じ、受電部３１の受電コイル３１１に電力を供給する。 The feeding coil 211 generates an electromagnetic wave due to the electric energy supplied from the feeding-side inverter 212, and supplies power to the receiving coil 311 of the power receiving unit 31.
　シールド２１０（シールド部材の一例）は、給電コイル２１１を収容する直方体状の筐体であり、電磁波遮蔽効果のある素材で構成される。これにより、シールド２１０は、給電コイル２１１から発生する電磁波を遮蔽する。 The shield 210 (an example of a shield member) is a rectangular parallelepiped housing that houses the feeding coil 211 and is made of a material having an electromagnetic wave shielding effect. Thereby, the shield 210 shields electromagnetic waves generated from the feeding coil 211.
　受電部３１は、シールド３１０、受電コイル３１１、整流器３１２、およびフィルタ回路３１３を有する。 The power receiving unit 31 includes a shield 310, a power receiving coil 311, a rectifier 312, and a filter circuit 313.
　シールド３１０（シールド部の一例）は、シールド２１０と同じく、受電コイル３１１を収容する直方体状の筐体であり、電磁波遮蔽効果のある素材で構成される。これにより、シールド３１０は、受電コイル３１１から発生する電磁波を遮蔽する。 Like the shield 210, the shield 310 (an example of a shield part) is a rectangular parallelepiped housing that houses the power receiving coil 311 and is made of a material having an electromagnetic wave shielding effect. Thereby, the shield 310 shields electromagnetic waves generated from the power receiving coil 311.
　受電コイル３１１は、給電部２１の給電コイル２１１から供給された電力を整流器３１２に供給する。 The power receiving coil 311 supplies the power supplied from the power feeding coil 211 of the power feeding unit 21 to the rectifier 312.
　整流器３１２は、受電コイル３１１からの電力を直流の電力に変換し、フィルタ回路３１３へ出力する。 The rectifier 312 converts the power from the power receiving coil 311 into DC power and outputs it to the filter circuit 313.
　フィルタ回路３１３は、整流器３１２からの電力をフィルタ処理し、蓄電池４に出力する。これにより、蓄電池４には、フィルタ回路３１３から出力された電流が供給される。 The filter circuit 313 filters the power from the rectifier 312 and outputs it to the storage battery 4. As a result, the current output from the filter circuit 313 is supplied to the storage battery 4.
　本実施の形態において、給電コイル２１１および受電コイル３１１は、巻線を有するソレノイドコイル、またはスパイラルコイルのいずれかを適用する。以下、図３Ａおよび図３Ｂを参照して、それぞれの適用例について説明する。 In this embodiment, the power supply coil 211 and the power reception coil 311 are either a solenoid coil having a winding or a spiral coil. Hereinafter, each application example will be described with reference to FIGS. 3A and 3B.
　図３Ａは、給電コイル２１１および受電コイル３１１にソレノイドコイルを適用した場合を示す斜視図である。以下、ソレノイドコイルである給電コイル２１１を「給電コイル２１１ａ」、ソレノイドコイルである受電コイル３１１を「受電コイル３１１ａ」という。 FIG. 3A is a perspective view showing a case where a solenoid coil is applied to the power feeding coil 211 and the power receiving coil 311. Hereinafter, the power supply coil 211 that is a solenoid coil is referred to as “power supply coil 211a”, and the power reception coil 311 that is a solenoid coil is referred to as “power reception coil 311a”.
　図３Ａにおいて、給電コイル２１１ａはシールド２１０に、受電コイル３１１ａはシールド３１０にそれぞれ収容されている。シールド２１０およびシールド３１０は、直方体型であり、最大面積を有する２つの底面と、４つの側面とを有する。シールド２１０の２つの底面のうち、受電コイル３１１ａと向き合う面は、開口している。同様に、シールド３１０の２つの底面のうち、給電コイル２１１ａと向き合う面は、開口している。また、シールド３１０において、４つの側面のうちの２つを側面Ａ、側面Ｃとして示しているが、側面Ａと相対して平行な位置関係にある面は側面Ｂといい、側面Ｃと相対して平行な位置関係にある面は側面Ｄという（シールド２１０も同様）。 3A, the feeding coil 211a is housed in the shield 210, and the power receiving coil 311a is housed in the shield 310, respectively. The shield 210 and the shield 310 are rectangular parallelepiped, and have two bottom surfaces having a maximum area and four side surfaces. Of the two bottom surfaces of the shield 210, the surface facing the power receiving coil 311a is open. Similarly, of the two bottom surfaces of the shield 310, the surface facing the feeding coil 211a is open. Further, in shield 310, two of the four side surfaces are shown as side surface A and side surface C, but the surface in a positional relationship parallel to side surface A is referred to as side surface B and is opposed to side surface C. The planes that are parallel to each other are called side faces D (the same applies to the shield 210).
　図３Ａにおいて、給電コイル２１１ａと受電コイル３１１ａの間で電磁力を利用した給電が行われると、磁力線ｆ１（電磁波の一例）が発生する。なお、図３Ａでは、磁力線ｆ１を１つのみ示しているが、磁力線ｆ１は、多数存在している。シールド２１０およびシールド３１０において、磁力線ｆ１は、側面Ａ、側面Ｂ、側面Ｃ、および側面Ｄを通る。そして、特に、側面Ａおよび側面Ｂ方向の電磁波が強い。したがって、図６Ａを用いて後述するが、側面Ａおよび側面Ｂにサブコイルを配置するのが最適である。 In FIG. 3A, when power supply using an electromagnetic force is performed between the power supply coil 211a and the power reception coil 311a, a line of magnetic force f1 (an example of an electromagnetic wave) is generated. In FIG. 3A, only one magnetic field line f1 is shown, but there are many magnetic field lines f1. In the shield 210 and the shield 310, the magnetic force line f <b> 1 passes through the side surface A, the side surface B, the side surface C, and the side surface D. And especially the electromagnetic waves of the side A and the side B direction are strong. Therefore, as will be described later with reference to FIG. 6A, it is optimal to arrange the subcoils on the side surface A and the side surface B.
　図３Ｂは、給電コイル２１１および受電コイル３１１にスパイラルコイルを適用した場合を示す斜視図である。以下、スパイラルコイルである給電コイル２１１を「給電コイル２１１ｂ」、スパイラルコイルである受電コイル３１１を「受電コイル３１１ｂ」という。 FIG. 3B is a perspective view showing a case where a spiral coil is applied to the feeding coil 211 and the receiving coil 311. Hereinafter, the power feeding coil 211 that is a spiral coil is referred to as “power feeding coil 211b”, and the power receiving coil 311 that is a spiral coil is referred to as “power receiving coil 311b”.
　図３Ｂにおいて、給電コイル２１１ｂはシールド２１０に、受電コイル３１１ｂはシールド３１０にそれぞれ収容されている。シールド２１０およびシールド３１０の各面については、図３Ａで説明済みであるので、ここでの説明は省略する。 3B, the feeding coil 211b is accommodated in the shield 210, and the receiving coil 311b is accommodated in the shield 310. Since each surface of the shield 210 and the shield 310 has already been described with reference to FIG. 3A, description thereof is omitted here.
　図３Ｂにおいて、給電コイル２１１ｂと受電コイル３１１ｂの間で電磁力を利用した給電が行われると、磁力線ｆ２（電磁波の一例）が発生する。なお、図３Ｂでは、磁力線ｆ２を２つのみ示しているが、磁力線ｆ２は、多数存在している。シールド２１０およびシールド３１０において、磁力線ｆ２は、側面Ａ、側面Ｂ、側面Ｃ、および側面Ｄを通る。ただし、上述したソレノイドコイルの場合と比較して、スパイラルコイルの場合、側面Ａ、側面Ｂ、側面Ｃ、および側面Ｄ方向の電磁波の強弱の差は小さい。したがって、図７Ａを用いて後述するが、側面Ａ、側面Ｂ、側面Ｃ、および側面Ｄにサブコイルを配置するのが最適である。 In FIG. 3B, when power supply using electromagnetic force is performed between the power supply coil 211b and the power reception coil 311b, a magnetic force line f2 (an example of an electromagnetic wave) is generated. In FIG. 3B, only two lines of magnetic force f2 are shown, but there are many lines of magnetic force f2. In the shield 210 and the shield 310, the magnetic force line f <b> 2 passes through the side surface A, the side surface B, the side surface C, and the side surface D. However, as compared with the case of the solenoid coil described above, in the case of the spiral coil, the difference in strength of electromagnetic waves in the direction of the side surface A, the side surface B, the side surface C, and the side surface D is small. Therefore, as will be described later with reference to FIG. 7A, it is optimal to arrange the subcoils on the side surface A, side surface B, side surface C, and side surface D.
　＜サブ受電部３３の構成＞
　図４は、サブ受電部３３の構成を示すブロック図である。 <Configuration of sub power receiving unit 33>
FIG. 4 is a block diagram illustrating a configuration of the sub power receiving unit 33.
　サブ受電部３３は、サブコイル３３１、整流器３３２、およびフィルタ回路３３３を有する。 The sub power receiving unit 33 includes a sub coil 331, a rectifier 332, and a filter circuit 333.
　サブコイル３３１は、給電部２１の給電コイル２１１から供給された電力を回収し、整流器３３２に供給する。 The subcoil 331 collects the electric power supplied from the power supply coil 211 of the power supply unit 21 and supplies it to the rectifier 332.
　整流器３３２は、サブコイル３３１からの電力を直流の電力に変換し、フィルタ回路３３３へ出力する。 The rectifier 332 converts the power from the subcoil 331 into DC power and outputs it to the filter circuit 333.
　フィルタ回路３３３は、整流器３３２からの電力をフィルタ処理し、負荷３４に出力する。これにより、負荷３４は、フィルタ回路３１３から出力された電流を用いて動作する。 The filter circuit 333 filters the power from the rectifier 332 and outputs it to the load 34. As a result, the load 34 operates using the current output from the filter circuit 313.
　＜サブコイル３３１の配置＞
　図５は、サブコイル３３１およびシールド３１０の配置例を説明する図である。なお、図５では、図３Ａにおける受電コイル３１１ａおよび磁力線ｆ１の図示を省略している。すなわち、図５は、受電コイルがソレノイドコイルである場合におけるサブコイル３３１の配置例を示す。 <Arrangement of subcoil 331>
FIG. 5 is a diagram for explaining an arrangement example of the subcoil 331 and the shield 310. In FIG. 5, the power receiving coil 311a and the magnetic lines of force f1 in FIG. 3A are not shown. That is, FIG. 5 shows an arrangement example of the subcoils 331 when the power receiving coil is a solenoid coil.
　図５に示すように、シールド３１０の内側において、２つのサブコイル３３１の開口面が、それぞれ、受電コイル３１１ａのコイル巻き線の中心軸Ｘ上にある側面Ａおよび側面Ｂに対して平行になるように配置されている。なお、コイル巻き線の中心軸Ｘは、図６Ａに図示している。側面Ａおよび側面Ｂは、上述したとおり、給電コイル２１１ａと受電コイル３１１ａの間の磁力線ｆ１が通る面である。このように、受電コイルがソレノイドコイルである場合、サブコイル３３１は、磁力線ｆ１が通る側面Ａおよび側面Ｂにそれぞれ配置されることで、最適な受電が可能となる。その理由は、上述したとおり、側面Ａおよび側面Ｂ方向の電磁波が強いからである。 As shown in FIG. 5, inside the shield 310, the opening surfaces of the two subcoils 331 are parallel to the side surface A and the side surface B on the central axis X of the coil winding of the power receiving coil 311a, respectively. Is arranged. The central axis X of the coil winding is illustrated in FIG. 6A. As described above, the side surface A and the side surface B are surfaces through which the lines of magnetic force f1 between the feeding coil 211a and the power receiving coil 311a pass. As described above, when the power receiving coil is a solenoid coil, the sub-coil 331 is arranged on the side surface A and the side surface B through which the magnetic lines of force f1 pass, whereby optimal power reception is possible. The reason is that the electromagnetic waves in the direction of the side surface A and the side surface B are strong as described above.
　上述したように配置されたサブコイル３３１は、受電コイル３１１ａと同様に、給電部２１からの電力を受電する。これにより、従来、コイルを囲うシールドで熱損失していた電力、または、漏洩磁界および不要輻射として損失していた電力（受電コイルが受電できなかった電力）をサブコイル３３１で回収することができる。 The sub-coil 331 arranged as described above receives power from the power feeding unit 21 in the same manner as the power receiving coil 311a. As a result, conventionally, power that has been lost by heat at the shield surrounding the coil, or power that has been lost as leakage magnetic field and unnecessary radiation (power that the receiving coil could not receive) can be recovered by the subcoil 331.
　なお、図５において、サブコイル３３１と側面Ａとの間、および、サブコイル３３１と側面Ｂとの間に、フェライトを設置するようにしてもよい。これにより、フェライトを設置しない場合と比べ、側面Ａ、Ｂを通る電磁波を完全に遮蔽することができる。 In FIG. 5, ferrite may be provided between the subcoil 331 and the side surface A and between the subcoil 331 and the side surface B. Thereby, compared with the case where a ferrite is not installed, the electromagnetic waves which pass through the side surfaces A and B can be shielded completely.
　または、図５において、シールド３１０を強化プラスチックで形成し、その中にサブコイル３３１を埋め込んでもよい。これにより、給電中における漏洩磁界および不要輻射を低減できる。 Alternatively, in FIG. 5, the shield 310 may be formed of reinforced plastic, and the subcoil 331 may be embedded therein. Thereby, the leakage magnetic field and unnecessary radiation during electric power feeding can be reduced.
　図６Ａは、図５に示す配置をシールド３１０の上面から示した図である。図６Ａでは、受電コイル３１１ａの配置を図示している。図６Ａに示すように、２つのサブコイル３３１は、それぞれ、シールド３１０の内側において、受電コイル３１１ａの磁力線ｆ１が通る側面Ａおよび側面Ｂに対して平行に配置されている。 FIG. 6A is a diagram showing the arrangement shown in FIG. FIG. 6A illustrates the arrangement of the power receiving coil 311a. As shown in FIG. 6A, the two subcoils 331 are arranged in parallel to the side surface A and the side surface B through which the magnetic force lines f1 of the power receiving coil 311a pass inside the shield 310, respectively.
　なお、シールド３１０におけるサブコイル３３１の配置は、図６Ａに限られない。その他の例を、図６Ｂおよび図６Ｃに示す。 Note that the arrangement of the subcoil 331 in the shield 310 is not limited to FIG. 6A. Other examples are shown in FIGS. 6B and 6C.
　例えば、図６Ｂに示すように、シールド３１０の内側において、サブコイル３３１よりもサイズが大きい４つのサブコイル３３１ａが、それぞれ、中央の受電コイル３１１ａを囲むように配置されてもよい。各サブコイル３３１ａは、近傍の側面に対して平行に配置されている。 For example, as shown in FIG. 6B, four subcoils 331a having a size larger than the subcoil 331 may be arranged inside the shield 310 so as to surround the central power receiving coil 311a. Each subcoil 331a is arranged in parallel to the side surface in the vicinity.
　または、図６Ｃに示すように、シールド３１０の内側において、４つのサブコイル３３１と、サブコイル３３１よりもサイズが小さい４つのサブコイル３３１ｂが、それぞれ、中央の受電コイル３１１ａを囲むように配置されてもよい。各サブコイル３３１は、近傍の側面に対して平行に配置されており、また、各サブコイル３３１ｂは、シールド３１０の四隅に配置されている。このように、側面Ａおよび側面Ｂ方向に比べて電磁波が弱い側面Ｃおよび側面Ｄにもサブコイルを配置することによって、従来損失していた電力をさらに回収することができる。 Alternatively, as illustrated in FIG. 6C, inside the shield 310, four subcoils 331 and four subcoils 331b smaller in size than the subcoil 331 may be arranged so as to surround the central power receiving coil 311a, respectively. . Each subcoil 331 is arranged in parallel to the side surface in the vicinity, and each subcoil 331 b is arranged at the four corners of the shield 310. As described above, by arranging the subcoil also on the side surface C and the side surface D where electromagnetic waves are weaker than those in the side surface A and side surface B directions, it is possible to further recover power that has been conventionally lost.
　次に、受電コイルがスパイラルコイルである場合のサブコイルの配置例について、図７を用いて説明する。図７Ａは、図６Ａと同様、サブコイル３３１の配置をシールド３１０の上面から示した図である。図７Ａにおいて、シールド３１０の中央には、スパイラルコイルである受電コイル３１１ｂが配置されている。 Next, an example of the arrangement of subcoils when the power receiving coil is a spiral coil will be described with reference to FIG. FIG. 7A is a diagram showing the arrangement of the subcoil 331 from the top surface of the shield 310, as in FIG. 6A. In FIG. 7A, a power receiving coil 311b, which is a spiral coil, is disposed in the center of the shield 310.
　図７Ａに示すように、シールド３１０の内側において、４つのサブコイル３３１は、それぞれ、中央の受電コイル３１１ｂを囲むように配置されている。このとき、各サブコイル３３１は、側面Ａ、Ｂ、Ｃ、Ｄに対して平行に配置されている。側面Ａ、Ｂ、Ｃ、Ｄは、上述したとおり、給電コイル２１１ａと受電コイル３１１ｂの間の磁力線ｆ２が通る面である。このように、受電コイルがスパイラルコイルである場合、サブコイル３３１は、磁力線ｆ２が通る側面Ａ～Ｄにそれぞれ配置されることで、最適な受電が可能となる。その理由は、上述したとおり、側面Ａ、側面Ｂ、側面Ｃ、および側面Ｄ方向の電磁波の強弱の差が小さいからである。 7A, inside the shield 310, the four subcoils 331 are arranged so as to surround the central power receiving coil 311b, respectively. At this time, each subcoil 331 is disposed in parallel to the side surfaces A, B, C, and D. As described above, the side surfaces A, B, C, and D are surfaces through which the lines of magnetic force f2 between the power feeding coil 211a and the power receiving coil 311b pass. As described above, when the power receiving coil is a spiral coil, the sub-coil 331 is disposed on each of the side surfaces A to D through which the magnetic lines of force f2 pass, whereby optimal power reception is possible. The reason is that, as described above, the difference in strength between the electromagnetic waves in the directions of the side surface A, the side surface B, the side surface C, and the side surface D is small.
　なお、サブコイル３３１の配置は、図７Ａに限られず、図７Ｂまたは図７Ｃに示す配置であってもよい。図７Ｂおよび図７Ｃに示す配置は、それぞれ、図６Ｂおよび図６Ｃに示す配置と同じであるので、ここでの説明は省略する。図７Ｂおよび図７Ｃに示す配置によれば、受電コイル３１１ａの周囲をサブコイルで囲むことで、従来損失していた電力をさらに回収することができる。 The arrangement of the subcoil 331 is not limited to FIG. 7A, and may be the arrangement shown in FIG. 7B or 7C. The arrangements shown in FIGS. 7B and 7C are the same as the arrangements shown in FIGS. 6B and 6C, respectively, and thus description thereof is omitted here. According to the arrangements shown in FIG. 7B and FIG. 7C, the power that has been conventionally lost can be further recovered by surrounding the power receiving coil 311a with the sub-coil.
　以上説明したように、本実施の形態に係る受電装置は、シールドの内側において、コイルの磁力線が通る面に、給電装置からの電力を受電するサブコイルを配置することを特徴とする。これにより、本実施の形態の受電装置は、発熱を低減し、かつ、漏洩磁界および不要輻射を遮蔽することができる。 As described above, the power receiving device according to the present embodiment is characterized in that a subcoil that receives power from the power feeding device is arranged on the surface through which the magnetic lines of force of the coil pass inside the shield. Thereby, the power receiving apparatus of this Embodiment can reduce heat_generation | fever and can shield a leakage magnetic field and unnecessary radiation.
　以上、本発明の実施の形態について説明したが、上記説明は一例であり、種々の変形が可能である。 Although the embodiment of the present invention has been described above, the above description is an example, and various modifications are possible.
　例えば、上記実施の形態では、サブコイル３３１を、受電装置３に適用した場合を説明したが、給電装置２に適用してもよい。すなわち、本発明は、サブコイル３３１を、シールド２１０に収容して給電コイル２１１の周囲において、図６Ａ～Ｃおよび図７Ａ～Ｃのいずれかに示すように配置してもよい。 For example, in the above-described embodiment, the case where the subcoil 331 is applied to the power receiving device 3 has been described, but may be applied to the power feeding device 2. That is, according to the present invention, the subcoil 331 may be accommodated in the shield 210 and disposed around the feeding coil 211 as shown in any of FIGS. 6A to 7C and FIGS. 7A to 7C.
　また、例えば、上記実施の形態では、サブコイル３３１の開口面をシールドの側面に対して平行に配置する例としたが、サブコイル３３１が受電コイル３１１ａのコイル巻き線の中心軸Ｘ（図６Ａ参照）上にあれば、側面に平行な配置でなくてもよい。例えば、受電コイルまたは給電コイルがソレノイドコイルの場合、サブコイルは、側面Ａと側面Ｂの付近に配置されれば、側面に平行な位置でなくてもよい。また、例えば、受電コイルまたは給電コイルがスパイラルコイルの場合、サブコイルは、側面Ａ、側面Ｂ、側面Ｃ、および側面Ｄの付近に配置されれば、側面に平行な位置でなくてもよい。さらには、サブコイルは、受電コイルまたは給電コイルの周囲を囲むように配置されれば、側面に平行な位置でなくてもよい。 Further, for example, in the above embodiment, the opening surface of the subcoil 331 is arranged in parallel to the side surface of the shield. However, the subcoil 331 has the coil winding central axis X of the power receiving coil 311a (see FIG. 6A). If it is above, it may not be arranged parallel to the side surface. For example, when the power receiving coil or the power feeding coil is a solenoid coil, the sub-coil may not be in a position parallel to the side surface as long as the sub coil is disposed in the vicinity of the side surface A and the side surface B. In addition, for example, when the power receiving coil or the power feeding coil is a spiral coil, the sub-coil may not be in a position parallel to the side surface as long as the sub coil is disposed in the vicinity of the side surface A, the side surface B, the side surface C, and the side surface D. Furthermore, the sub-coil does not have to be in a position parallel to the side surface as long as the sub-coil is arranged so as to surround the power receiving coil or the power feeding coil.
　また、例えば、上記実施の形態では、シールド２１０およびシールド３１０を直方体型としたが、形状がこれに限定されない。例えば、その他の角柱型または円柱型、あるいは、それらに類似する形状であってもよい。 For example, in the above embodiment, the shield 210 and the shield 310 are rectangular parallelepiped, but the shape is not limited to this. For example, other prisms or cylinders, or similar shapes may be used.
　また、例えば、シールド３１０は、受電コイル３１１だけでなく、整流器３１２、フィルタ回路３１３、車両側制御部３０、車両側通信部３２、サブ受電部３３の整流器３３２、サブ受電部３３のフィルタ回路３３３、および負荷３４のうち任意のものを囲むようにしてもよい。同様に、例えば、シールド２１０は、給電コイル２１１だけでなく、給電側インバータ２１２、電源回路２１３、給電側制御部２０、給電側通信部２２、サブ受電部３３の整流器３３２、サブ受電部３３のフィルタ回路３３３、および負荷３４のうち任意のものを囲むようにしてもよい。 Further, for example, the shield 310 is not only the power receiving coil 311 but also the rectifier 312, the filter circuit 313, the vehicle side control unit 30, the vehicle side communication unit 32, the rectifier 332 of the sub power receiving unit 33, and the filter circuit 333 of the sub power receiving unit 33. , And any of the loads 34 may be enclosed. Similarly, for example, the shield 210 includes not only the power feeding coil 211 but also the power feeding side inverter 212, the power supply circuit 213, the power feeding side control unit 20, the power feeding side communication unit 22, the rectifier 332 of the sub power receiving unit 33, and the sub power receiving unit 33. Any one of the filter circuit 333 and the load 34 may be enclosed.
　また、上記実施の形態において、配置の順番は、「受電コイル」→「サブコイル」→「シールド」となっていればよい。また、その他デバイス（整流器３１２、フィルタ回路３１３、車両側制御部３０、車両側通信部３２、サブ受電部３３の整流器３３２、サブ受電部３３のフィルタ回路３３３、および負荷３４など）は、「受電コイル」と「サブコイル」との間に配置しても、「サブコイル」と「シールド」との間に配置してもよい。なお、給電装置側にサブコイルを備える場合も、これと同様である。 Further, in the above embodiment, the arrangement order may be “receiving coil” → “subcoil” → “shield”. Other devices (such as the rectifier 312, the filter circuit 313, the vehicle side control unit 30, the vehicle side communication unit 32, the rectifier 332 of the sub power reception unit 33, the filter circuit 333 of the sub power reception unit 33, and the load 34) It may be disposed between the “coil” and the “subcoil”, or may be disposed between the “subcoil” and the “shield”. The same applies to the case where the sub-coil is provided on the power feeding device side.
　２０１３年３月２７日出願の特願２０１３－０６６６９２の日本出願に含まれる明細書、図面および要約書の開示内容は、すべて本願に援用される。 The disclosure of the specification, drawings and abstract contained in the Japanese application of Japanese Patent Application No. 2013-066692 filed on March 27, 2013 is incorporated herein by reference.
　本発明は、例えば、電磁力を利用した非接触充電に用いられる非接触充電装置として、受電装置または給電装置に適用することができる。 The present invention can be applied to, for example, a power receiving device or a power feeding device as a non-contact charging device used for non-contact charging using electromagnetic force.
　１　車両
　２　給電装置
　３　受電装置
　４　蓄電池
　２０　給電側制御部
　２１　給電部
　２２　給電側通信部
　３０　車両側制御部
　３１　受電部
　３２　車両側通信部
　３３　サブ受電部
　３４　負荷
　１００　充電システム
　２１０　シールド
　２１１　給電コイル
　２１２　給電側インバータ
　２１３　電源回路
　３１０　シールド
　３１１　受電コイル
　３１２　整流器
　３１３　フィルタ回路
　３３１、３３１ａ、３３１ｂ　サブコイル
　３３２　整流器
　３３３　フィルタ回路 DESCRIPTION OF SYMBOLS 1 Vehicle 2 Power supply apparatus 3 Power reception apparatus 4 Storage battery 20 Power supply side control part 21 Power supply part 22 Power supply side communication part 30 Vehicle side control part 31 Power reception part 32 Vehicle side communication part 33 Sub power reception part 34 Load 100 Charging system 210 Shield 211 Power supply coil 212 Feeder side inverter 213 Power supply circuit 310 Shield 311 Power receiving coil 312 Rectifier 313 Filter circuit 331, 331a, 331b Subcoil 332 Rectifier 333 Filter circuit

Claims (10)

  1. 　電磁力を利用した充電に用いられる非接触充電装置であって、
    　電磁波を発生するコイルと、
    　前記電磁波を電気エネルギとして回収するサブコイルと、を有する、
    　非接触充電装置。     A non-contact charging device used for charging using electromagnetic force,
    A coil that generates electromagnetic waves;
    A subcoil that collects the electromagnetic wave as electrical energy,
    Non-contact charging device.
  2. 　前記サブコイルが回収した電気エネルギを消費する負荷をさらに備えた、
    　請求項１記載の非接触充電装置。     A load that consumes the electrical energy recovered by the subcoil;
    The contactless charging apparatus according to claim 1.
  3. 　前記負荷は、放熱抵抗または電子機器である、
    　請求項２記載の非接触充電装置。     The load is a heat dissipation resistor or an electronic device.
    The non-contact charging device according to claim 2.
  4. 　前記サブコイルが回収した電気エネルギを直流の電気エネルギに変換して前記負荷へ出力する整流器を備えたサブ受電部を有する、
    　請求項２記載の非接触充電装置。     A sub power receiving unit including a rectifier that converts the electric energy collected by the sub coil into DC electric energy and outputs the electric energy to the load;
    The non-contact charging device according to claim 2.
  5. 　前記コイルは、スパイラルコイルであり、
    　前記サブコイルは、
    　前記スパイラルコイルを囲む４つの面のそれぞれの付近に配置されている、
    　請求項１記載の非接触充電装置。     The coil is a spiral coil;
    The subcoil is:
    Arranged in the vicinity of each of the four surfaces surrounding the spiral coil;
    The contactless charging apparatus according to claim 1.
  6. 　前記コイルは、ソレノイドコイルであり、
    　前記サブコイルは、
    　前記ソレノイドコイルを囲む４つの面のうち前記ソレノイドコイルの巻き線の中心軸上にある２つの面のそれぞれの付近に配置されている、
    　請求項１記載の非接触充電装置。     The coil is a solenoid coil;
    The subcoil is:
    The four surfaces surrounding the solenoid coil are arranged in the vicinity of two surfaces on the central axis of the winding of the solenoid coil,
    The contactless charging apparatus according to claim 1.
  7. 　電磁波を遮蔽するシールド部をさらに備え、
    　前記サブコイルは、前記シールド部の前記コイルのある側に配置される、
    　請求項１記載の非接触充電装置。     It further includes a shield part that shields electromagnetic waves,
    The sub-coil is disposed on the side of the shield portion where the coil is present.
    The contactless charging apparatus according to claim 1.
  8. 　電磁波を遮蔽するシールド部をさらに備え、
    　前記サブコイルと、前記シールド部の前記コイルのある側の面との間に、フェライトを備えた、
    　請求項１記載の非接触充電装置。     It further includes a shield part that shields electromagnetic waves,
    Between the subcoil and the surface of the shield portion on the side where the coil is provided, ferrite is provided,
    The contactless charging apparatus according to claim 1.
  9. 　強化プラスチックで形成されたシールド部をさらに備え、
    　前記サブコイルは、前記シールド部に埋め込まれる、
    　請求項１記載の非接触充電装置。     Further comprising a shield part formed of reinforced plastic,
    The sub-coil is embedded in the shield part.
    The contactless charging apparatus according to claim 1.
  10. 　前記コイルが給電コイルとして機能する給電装置、または、前記コイルが受電コイルとして機能する受電装置、のいずれかである、
    　請求項１記載の非接触充電装置。     The power supply device in which the coil functions as a power supply coil, or the power reception device in which the coil functions as a power reception coil.
    The contactless charging apparatus according to claim 1.
PCT/JP2014/001357 2013-03-27 2014-03-11 Contactless charging device WO2014156014A1 (en)

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