WO2013061610A1 - Appareil de fourniture de courant, appareil de réception de courant et appareil de chargement sans contact - Google Patents

Appareil de fourniture de courant, appareil de réception de courant et appareil de chargement sans contact Download PDF

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Publication number
WO2013061610A1
WO2013061610A1 PCT/JP2012/006913 JP2012006913W WO2013061610A1 WO 2013061610 A1 WO2013061610 A1 WO 2013061610A1 JP 2012006913 W JP2012006913 W JP 2012006913W WO 2013061610 A1 WO2013061610 A1 WO 2013061610A1
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WIPO (PCT)
Prior art keywords
power
electric field
coil
field shield
primary
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Application number
PCT/JP2012/006913
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English (en)
Japanese (ja)
Inventor
秀樹 定方
藤田　篤志
大森　義治
宮下　功寛
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パナソニック株式会社
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Publication of WO2013061610A1 publication Critical patent/WO2013061610A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M7/00—Power lines or rails specially adapted for electrically-propelled vehicles of special types, e.g. suspension tramway, ropeway, underground railway
    • B60M7/003—Power lines or rails specially adapted for electrically-propelled vehicles of special types, e.g. suspension tramway, ropeway, underground railway for vehicles using stored power (e.g. charging stations)
    • 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
    • B60L53/122—Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
    • 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
    • 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
    • B60L53/38—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by 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
    • B60L53/60—Monitoring or controlling charging stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/46—Accumulators structurally combined with charging apparatus
    • 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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00304—Overcurrent protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00308—Overvoltage protection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • 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 power feeding device and a power receiving device that transmit power in a contactless manner, and a non-contact charging device that charges a battery with the power transmitted from the power feeding device to the power receiving device.
  • FIG. 12 is a schematic diagram showing a configuration of a conventional non-contact charging device 106 (for example, Patent Document 1).
  • the power feeding device (primary side) F connected to the ground-side power source 109 is physically connected to the power receiving device (secondary side) G mounted on the electric propulsion vehicle at the time of power feeding. It is arrange
  • an alternating current is applied to the primary coil 107 provided in the power feeding device F to form a magnetic flux
  • an induced electromotive force is generated in the secondary coil 108 provided in the power receiving device G, and thereby the primary coil ( Electric power is transmitted from the power transmission coil) 107 to the secondary coil (power reception coil) 108 without contact.
  • the power receiving device G is connected to the in-vehicle battery 110, for example, and the power transmitted to the power receiving device G is charged in the in-vehicle battery 110.
  • the in-vehicle motor 111 is driven by the electric power stored in the in-vehicle battery 110. Note that, during the non-contact power feeding, necessary information exchange is performed between the power feeding device F and the power receiving device G, for example, by the wireless communication device 112.
  • FIGS. 13A and 13B are schematic views showing the internal structures of the power feeding device F and the power receiving device G.
  • FIG. 13A is a schematic diagram illustrating an internal structure when the power feeding device F is viewed from above and the power receiving device G is viewed from below.
  • FIG. 13B is a schematic diagram illustrating an internal structure when the power feeding device F and the power receiving device G are viewed from the side.
  • the power feeding device F includes a primary coil 107, a primary magnetic core 113, a back plate 115, a cover 116, and the like.
  • the power receiving device G has a symmetric structure with the power feeding device F, and includes a secondary coil 108, a secondary magnetic core 114, a back plate 115, a cover 116, and the like.
  • the surfaces of the primary coil 107 and the primary magnetic core 113 and the surfaces of the secondary coil 108 and the secondary magnetic core 114 are fixedly covered with a mold resin 117 mixed with a foam material 118, respectively.
  • the mold resin 117 is filled between the back plate 115 and the cover 116 so that the primary coil 107 and the primary magnetic core 113 inside, and the secondary coil 108 and the secondary magnetic core are contained. 114 are respectively covered and fixed.
  • the mold resin 117 is made of, for example, silicon resin, and by fixing the interior in this manner, the primary and secondary coils 107 and 108 are positioned and fixed, and the mechanical strength is ensured and the heat dissipation function is also exhibited. That is, the primary and secondary coils 107 and 108 generate heat due to Joule heat generated by the exciting current, but are radiated and cooled by the heat conduction of the mold resin 117.
  • Patent Document 2 describes a power feeding device in which load resistance is improved by forming a back plate 115 and a cover 116 with resin concrete.
  • Resin concrete is strong in compressive strength, but is brittle in terms of bending and tensile strength. When vibration is applied, there is a problem that the back plate 115 and the cover 116 made of resin concrete are broken.
  • a metal such as iron is a material that has high tensile strength and excellent workability, and thus has a high load resistance and is suitable for mass production.
  • the back plate 115 or the like is made of metal, the metal back plate 115 or the like is inevitably disposed near the primary coil because of the structure of the power feeding device.
  • a high-frequency AC voltage is applied to the primary coil, a voltage due to electrostatic induction is induced on the back plate 115 or the like, and there is a risk of electric shock if a person touches the back plate 115 or the like exposed to the outside.
  • a leakage current flows through the stray capacitance between the primary coil and the back plate 115, there is a problem that radiation noise is generated.
  • the power receiving device G since the power receiving device G is also mounted on the vehicle body, vibration during traveling is applied to the power receiving device G, so that strength to withstand such vibration is required.
  • the back plate 115 is made of metal in order to improve the strength of the back plate 115 or the connecting portion between the back plate 115 and the vehicle body, the same problem as that of the power feeding device F described above occurs.
  • the present invention has been made in view of such problems, and its main object is to provide a metal by electrostatic induction even when a metal object is disposed in the vicinity of a primary coil (power transmission coil) or a secondary coil (power reception coil).
  • An object of the present invention is to provide a power feeding device, a power receiving device, and a non-contact charging device that suppress the induction of a voltage to an object and the generation of a leakage current via a stray capacitance.
  • a power supply apparatus is a power supply apparatus that supplies power to a power receiving apparatus in a contactless manner, and includes a power conversion circuit that generates a high-frequency alternating current from a commercial power supply, and a power conversion circuit And a primary coil to which the high-frequency alternating current generated in step 1 is applied, and an electric field shield made of a conductor is disposed at a position overlapping at least a part of the primary coil in plan view. Is connected to a stable potential in the power conversion circuit.
  • the power receiving device is a power receiving device to which electric power is supplied from the power feeding device in a non-contact manner, a secondary coil that generates electromotive force by a magnetic flux generated in the primary coil of the power feeding device, and a secondary coil
  • a secondary side rectifier circuit for rectifying the electromotive force generated in the electric field, and an electric field shield made of a conductor is disposed at a position overlapping at least a part of the secondary coil in a plan view. It is connected to the output terminal of the secondary side rectifier circuit via a connecting means.
  • the non-contact charging device is a non-contact charging device that charges a battery with electric power supplied from the power feeding device to the power receiving device in a non-contact manner
  • the power feeding device is a primary side rectifier that rectifies a commercial power source.
  • Circuit an inverter circuit that is connected to the output terminal of the primary side rectifier circuit and generates a high-frequency alternating current, and a primary coil to which the high-frequency alternating current generated by the inverter circuit is applied.
  • An electric field shield made of a conductor is disposed at a position overlapping with at least a part of the primary coil or the secondary coil in a plan view. Via connection means, connected to the primary side rectifying circuit or the secondary side output terminal of the rectifier circuit.
  • the primary coil power transmission coil
  • a non-contact charging device that charges a battery with power transmitted from the power feeding device to the power receiving device
  • the primary coil power transmission coil
  • a non-contact charging device that charges a battery with power transmitted from the power feeding device to the power receiving device
  • FIG. 5 is a cross-sectional view illustrating a flow of leakage current in the power feeding device illustrated in FIG. 4. It is the schematic diagram which showed the structure of the conventional non-contact charging device. It is the schematic diagram which showed the internal structure of the conventional electric power feeding apparatus and an electric power receiving apparatus, (a) is the figure seen from the upper direction of an electric power feeding apparatus or the lower part of an electric power receiving apparatus, (b) is a side view of an electric power feeding apparatus and an electric power receiving apparatus.
  • One embodiment of the present invention is a power supply device that supplies power to a power receiving device in a contactless manner, and includes a power conversion circuit that generates a high-frequency alternating current from a commercial power source, and a high-frequency alternating current generated by the power conversion circuit.
  • An electric field shield made of a conductor is disposed at a position overlapping with at least a part of the primary coil in plan view, and the electric field shield is connected to the power conversion circuit via the primary side connection means. Connected to a stable potential.
  • Another embodiment of the present invention is a power receiving device to which electric power is supplied from a power feeding device in a non-contact manner, a secondary coil that generates electromotive force by a magnetic flux generated in a primary coil of the power feeding device, and a secondary coil
  • a secondary side rectifier circuit for rectifying the electromotive force generated in the coil, and an electric field shield made of a conductor is disposed at a position overlapping at least a part of the secondary coil in plan view. It is connected to the output terminal of the secondary side rectifier circuit via the side connection means.
  • another embodiment of the present invention is a non-contact charging device for charging a battery with electric power supplied from a power feeding device to a power receiving device in a non-contact manner, wherein the power feeding device rectifies a commercial power source. And an inverter circuit that is connected to the output end of the primary side rectifier circuit and generates a high-frequency alternating current; and a primary coil to which the high-frequency alternating current generated by the inverter circuit is applied, and the power receiving device is a primary power supply device A secondary coil that generates an electromotive force by magnetic flux generated in the coil, and a secondary side rectifier circuit that rectifies the electromotive force generated in the secondary coil and outputs the rectified voltage to the battery, at least in one of the power feeding device and the power receiving device
  • the electric field shield made of a conductor is disposed at a position overlapping with at least a part of the primary coil or the secondary coil in a plan view. Via a step and is connected to the primary side rectifying circuit or the secondary side output terminal of the
  • the leakage current flowing in the stray capacitance between the primary and secondary coils and the metal object can be reduced, and radiation noise can be suppressed.
  • the electric field shield is preferably made of a low resistivity material such as non-magnetic stainless steel, aluminum or copper.
  • a substance having a low resistivity even if the magnetic flux generated from the primary coil and the electric field shield are magnetically coupled and the electric field shield is induction-heated, the amount of generated heat can be suppressed. Thereby, the temperature rise of an electric power feeder can be prevented.
  • the electric field shield itself can be prevented from rising in temperature by cutting the path through which the induction current flows.
  • the temperature of the electric field shield is less than or equal to the penetration depth of the induction current determined by the frequency of the high-frequency current flowing in the primary coil and secondary coil and the metal material of the electric field shield, thereby preventing temperature rise due to induction heating. can do.
  • the electric field shield is connected to a stable potential of the power conversion circuit or the secondary side rectifier circuit through connection means having a predetermined impedance.
  • This impedance is the impedance of the line connecting the electric field shield and the stable potential of the circuit, and since it is very small, the electric field shield itself can be the stable potential of the connected power conversion circuit or secondary side rectifier circuit. .
  • FIG. 1 is a block diagram showing a configuration of a non-contact charging apparatus 1 according to an embodiment of the present invention.
  • 2 and 3 are external views of the non-contact charging device 1 in a state where the vehicle is installed in the parking space, FIG. 2 is an external view seen from the side of the vehicle, and FIG. 3 is a view seen from the rear of the vehicle.
  • FIG. 1 is a block diagram showing a configuration of a non-contact charging apparatus 1 according to an embodiment of the present invention.
  • 2 and 3 are external views of the non-contact charging device 1 in a state where the vehicle is installed in the parking space
  • FIG. 2 is an external view seen from the side of the vehicle
  • FIG. 3 is a view seen from the rear of the vehicle.
  • FIG. 1 is a block diagram showing a configuration of a non-contact charging apparatus 1 according to an embodiment of the present invention.
  • 2 and 3 are external views of the non-contact charging device 1 in a state where the vehicle is installed in the parking space
  • FIG. 2 is an external
  • the non-contact charging device 1 is composed of, for example, a power feeding device 2 installed in a parking space and a power receiving device 4 mounted on an electric propulsion vehicle.
  • the power feeding device 2 includes a power conversion circuit 17 including a primary side rectifier circuit 8 and an inverter circuit 10 connected to a commercial power source 6, a control unit (for example, a microcomputer) 16, a primary coil 18, and an electric field shield 14.
  • the ground side coil unit 12 and the primary side connection means 25 which connect the electric field shield 14 to the output terminal of a primary side rectifier circuit are provided.
  • the power receiving device 4 includes a vehicle side coil unit 21 including a secondary coil 19 and an electric field shield 20, a secondary side rectifier circuit 22, a battery 23, a control unit (for example, a microcomputer) 24, and an electric field shield 20. Is connected to the secondary side rectifier circuit 22.
  • the commercial power source 6 is a 200 V low-frequency AC power source, connected to the input end of the primary side rectifier circuit 8, and the output end of the primary side rectifier circuit 8 is connected to the input end of the inverter circuit 10.
  • the output terminal of the inverter circuit 10 is connected to the primary coil 18 of the ground side coil unit 12.
  • the output end of the vehicle side coil unit 21 is connected to the input end of the secondary side rectifier circuit 22, and the output end of the secondary side rectifier circuit 22 is connected to the battery 23.
  • the electric field shields 14 and 20 are respectively connected to the output ends (either the high potential side or the low potential side) of the primary side and secondary side rectifier circuits 8 and 22.
  • the primary and secondary side connection means 25 and 26 are connected.
  • the ground side coil unit 12 is laid on the ground, and the power conversion circuit 17 is erected at a position separated from the ground side coil unit 12 by a predetermined distance, for example.
  • the vehicle side coil unit 21 is attached to, for example, the bottom of the vehicle body (for example, a chassis).
  • the control unit 16 of the power feeding device 2 performs wireless communication with the control unit 24 of the power receiving device 4, and the control unit 24 of the power receiving device 4 determines the power command value according to the detected remaining voltage of the battery 23.
  • the power command value is transmitted to the control unit 16 of the power feeding device 2.
  • the control unit 16 of the power supply apparatus 2 compares the supplied power detected by the ground side coil unit 12 with the received power command value, and drives the inverter circuit 10 so that the power command value is obtained.
  • control unit 24 of the power receiving device 4 detects the received power and changes the power command value to the control unit 16 of the power feeding device 2 so that the battery 23 is not overcurrent or overvoltage.
  • the vehicle side coil unit 21 is disposed to face the ground side coil unit 12 by appropriately moving the vehicle.
  • the control unit 16 of the power feeding device 2 drives and controls the inverter circuit 10 to form a high frequency electromagnetic field between the ground side coil unit 12 and the vehicle side coil unit 21.
  • the power receiving device 4 takes out electric power from the high frequency electromagnetic field and charges the battery 23 with the taken out electric power.
  • the primary coil 18 and / or the secondary coil are connected by connecting the electric field shields 14 and 20 disposed in the vicinity of the 18 and / or the secondary coil 19 to the stable potential of the circuit in the power feeding device 2 and / or the power receiving device 4. Even when a metal object is arranged in the vicinity of 19, it is possible to suppress the induction of voltage on the metal object due to electrostatic induction and the generation of leakage current via the stray capacitance.
  • the size and location of the electric field shields 14 and 20 disposed in the vicinity of the primary coil 18 and / or the secondary coil 19 are not particularly limited, and the above-described values are determined depending on the magnitude of the output magnetic field of the primary coil 18 and the like. What is necessary is just to set suitably in the range with which the shielding effect is exhibited.
  • the electric field shields 14 and 20 made of a conductor are disposed at a position overlapping at least a part of the primary coil 18 and / or the secondary coil 19 in plan view. preferable.
  • the electric field shields 14 and 20 are preferably incorporated in the ground side and vehicle side coil units 12 and 21 together with the primary coil 18 and the secondary coil 19. As a result, even if induced voltages from the primary coil 18 and the secondary coil 19 are generated in the electric field shields 14 and 20, they are not exposed to the outside, so that a person accidentally touches the electric field shields 14 and 20 to get an electric shock. Can be prevented.
  • the electric field shields 14 and 20 are connected to the stable potential of the circuit in the power feeding device 2 or the power receiving device 4 via the low impedance connection means 25 and 26, whereby the electric field shields 14 and 20 are connected. This is equivalent to connecting to the ground, and the shielding effect by the electric field shields 14 and 20 can be realized.
  • part of the stable potential which connects the electric field shields 14 and 20 will not be restrict
  • the rectifier circuits 8 and 22 The output terminal (either the high potential side or the low potential side) can be a stable potential portion.
  • the capacitors C1 and C2 connected in series may be connected to the output end of the inverter circuit 10, that is, both ends of the primary coil 18, and the middle point of the capacitors C1 and C2 may be a stable potential portion. In this case, since the middle point of the capacitors C1 and C2 is the same as the potential of the output terminals of the rectifier circuits 8 and 22, the same shielding effect can be obtained.
  • the electric field shields 14 and 20 are connected to a stable potential via the primary side and secondary side connection means 25 and 26, and at this time, the primary side and secondary side connection means 25 and 26 are connected to the primary side and secondary side connection means 25 and 26.
  • Leakage current flows. Therefore, in order to suppress radiation noise due to leakage current, it is preferable to configure the primary side and secondary side connection means 25 and 26 with shield wires in which the periphery of the cable is covered with a metal such as copper foil.
  • the ground side coil unit 12 shown in FIG. 4 includes a primary coil 18, a metal back plate 27, and a cover 28 that covers the upper and side surfaces of the ground side coil unit 12.
  • the electric field shield 14 is disposed so as to cover the primary coil 18.
  • the periphery of the primary coil 18 that generates a high-frequency high voltage is covered with the electric field shield 14 connected to a stable potential (for example, the output end of the primary-side rectifier circuit 8) via the primary-side connection means 25. Therefore, it is possible to suppress the generation of an induced voltage due to electrostatic induction on the metal back plate 27, and thus it is possible to prevent a person from touching the back plate 27 exposed to the outside and receiving an electric shock. Since the primary coil 18 and the electric field shield 14 are built in the back plate 27 and the cover 28 attached to the back plate 27, a person does not touch the electric field shield 14 to get an electric shock.
  • the configuration of the ground side coil unit 12 is not particularly limited as long as the primary coil 18 and the electric field shield 14 are incorporated.
  • the back plate 27 and the cover 28 may be integrally formed, or may be made of the same metal material.
  • the primary side rectifier circuit 8, the inverter circuit 10, etc. may be further incorporated.
  • the electric field shield 14 is provided only between the primary coil 18 and the metal back plate 27. May be arranged.
  • the electric field shield 14 may be disposed only between the side surface of the primary coil 18 and between the primary coil 18 and the metal back plate 27.
  • the ground side coil unit 12 can be connected to the outdoor ground (on the ground as shown in FIG. 2).
  • the metal back plate 27 is at ground (earth) potential, but as shown in FIG. 11, the leakage current flowing in the stray capacitance between the primary coil 18 and the ground i0 decreases, and the generated radiation noise can be suppressed. Also, malfunction of the earth leakage breaker can be suppressed.
  • An electric field shield 14 may be disposed.
  • disposing the electric field shield 14 in the vicinity of the primary coil 18 not only improves the safety against electric shock and the like, but also flows to the stray capacitance between the primary coil 18 and the metal back plate 27. Leakage current can be reduced and radiation noise can be suppressed. Further, even when the back plate 27 is not made of metal, the leakage current flowing in the stray capacitance between the primary coil 18 and the metal object approaching the primary coil 18 can be reduced, and radiation noise can be suppressed.
  • vehicle-side coil unit 21 can adopt the same configuration as the configuration of the ground-side coil unit 12, but the shape and arrangement of the electric field shield 14 of the ground-side coil unit 12 and the electric field shield 20 of the vehicle-side coil unit 21, etc. May be different from each other.
  • the primary coil 18 and the secondary coil 19 are used.
  • a high-frequency current flows through the eddy current, an eddy current is induced in the electric field shields 14 and 20 by electromagnetic induction, and induction heating is performed.
  • the electric field shields 14 and 20 are provided with discontinuous portions (cuts) that block the path through which the induced current flows. As a result, the temperature rise of the electric field shields 14 and 20 themselves can be suppressed. In addition, what is necessary is just to determine suitably the shape, number, etc. of a discontinuous part according to the magnitude
  • the electric field shields 14 and 20 may be arranged between the primary coil 18 and the secondary coil 19 when the power feeding device 2 and the power receiving device 4 are arranged to face each other. As described above, if the generation of eddy current due to electromagnetic induction is suppressed to such an extent that the electric field shielding effect of the electric field shields 14 and 20 is not impaired, the loss of magnetic flux transmitted from the primary coil 18 to the secondary coil 19 is reduced. can do. Thereby, the loss of the electric power supplied in a non-contact manner from the power feeding device 2 to the power receiving device 4 can be minimized.
  • the shapes of the primary coil 18 and the secondary coil 19 are shapes as shown in FIG. 10, the inner side than the inner peripheral part of the primary coil 18 and the secondary coil 19 and the outer side of the outer peripheral part are magnetic fluxes. Since the amount is large, the electric field shields 14 and 20 are easily induction-heated. Therefore, when the electric field shields 14 and 20 are shaped as shown in FIG. 4, the electric field shields 14 and 20 have an inner diameter equal to or larger than the inner diameters of the primary coil 18 and the secondary coil 19 as shown in FIG. It is preferable that the outer shapes of 14 and 20 be equal to or smaller than the outer shapes of the primary coil 18 and the secondary coil 19. Thereby, the temperature rise of the electric field shields 14 and 20 themselves can be suppressed.
  • the electric field shields 14 and 20 are arranged in both the primary coil 18 and the secondary coil 19, but they may be arranged only in either one.
  • the electric power generated in the secondary coil 19 is used for charging the battery 23, but may be supplied to a load other than the battery 23.
  • the electric field shields 14 and 20 are connected to the output terminals of the primary side and secondary side rectifier circuits 8 and 22 through the primary side and secondary side connection means 25 and 26. Of course, they are connected to the ground potential. May be. However, when the back plate 27 of the power feeding device 2 is made of metal and is grounded to the ground, when the electric field shields 14 and 20 are connected to the back plate 27, a leakage current flows to the back plate 27. If the back plate 27 exposed to the outside is inadvertently touched, there is a risk of electric shock, which is not preferable.
  • the present invention is useful for a power feeding device and a power receiving device that transmit power in a non-contact manner, and a non-contact charging device that charges a battery with the power transmitted from the power feeding device to the power receiving device.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electrochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne un appareil de fourniture de courant (2), qui fournit du courant sans contact à un appareil de réception de courant (4). Il comprend un circuit de conversion de courant (17) qui produit un courant alternatif à haute fréquence à partir d'un courant fourni par une alimentation électrique commerciale (6) et une bobine (18) à laquelle est appliqué le courant alternatif à haute fréquence produit par le circuit de conversion de courant (17). Un blindage de protection contre le champ électrique (14) constitué d'un conducteur est disposé dans une position qui recouvre au moins une partie de la bobine (18) en vue planaire. Le blindage de protection contre le champ électrique (14) est connecté à une partie offrant un potentiel stable dans le circuit de conversion de courant (17), via un moyen de connexion (25).
PCT/JP2012/006913 2011-10-28 2012-10-29 Appareil de fourniture de courant, appareil de réception de courant et appareil de chargement sans contact WO2013061610A1 (fr)

Applications Claiming Priority (2)

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JP2011236892A JP2015008547A (ja) 2011-10-28 2011-10-28 非接触充電装置
JP2011-236892 2011-10-28

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WO2013061610A1 true WO2013061610A1 (fr) 2013-05-02

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WO2015002128A1 (fr) * 2013-07-02 2015-01-08 矢崎総業株式会社 Unité de bobine
JP2016111756A (ja) * 2014-12-03 2016-06-20 トヨタ自動車株式会社 非接触送電装置および非接触受電装置
GB2551731A (en) * 2016-06-28 2018-01-03 Bombardier Primove Gmbh Cable bearing arrangement and method of installing a cable bearing arrangement
JP2018535640A (ja) * 2016-09-23 2018-11-29 アップル インコーポレイテッドＡｐｐｌｅ Ｉｎｃ． ポータブル電子デバイス用のワイヤレス充電マット
US20210152033A1 (en) * 2018-09-27 2021-05-20 Murata Manufacturing Co., Ltd. Wireless power transfer system
CN114696564A (zh) * 2020-12-30 2022-07-01 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） 一种悬浮推进一体化模组
EP3975188A4 (fr) * 2019-06-26 2022-08-03 Zhejiang Nurotron Biotechnology Co., Ltd. Dispositif de blindage contre les champs électriques qui n'affecte pas l'efficacité de transmission d'une bobine de transmission couplée sans fil

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JP5890191B2 (ja) * 2012-02-06 2016-03-22 トヨタ自動車株式会社 送電装置、受電装置、および電力伝送システム
GB2501482A (en) * 2012-04-23 2013-10-30 Bombardier Transp Gmbh Providing a land vehicle with electric energy by magnetic induction
JP6179621B2 (ja) * 2015-02-24 2017-08-16 Tdk株式会社 コイルユニット、ワイヤレス給電装置、ワイヤレス受電装置およびワイヤレス電力伝送装置
FR3099336B1 (fr) * 2019-07-25 2022-07-22 Inst Vedecom Ecran de blindage magnétique pour un dispositif de charge sans contact d’un véhicule automobile

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JPH05290229A (ja) * 1992-04-06 1993-11-05 Kyodo Printing Co Ltd 非接触型ｉｃカードおよびその識別システム
JP2002084665A (ja) * 2000-06-27 2002-03-22 Toshitaka Takei 待機電力を削減する電源システム
JP2002170725A (ja) * 2000-11-30 2002-06-14 Toko Inc 電源装置

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JPH05290229A (ja) * 1992-04-06 1993-11-05 Kyodo Printing Co Ltd 非接触型ｉｃカードおよびその識別システム
JP2002084665A (ja) * 2000-06-27 2002-03-22 Toshitaka Takei 待機電力を削減する電源システム
JP2002170725A (ja) * 2000-11-30 2002-06-14 Toko Inc 電源装置

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015002128A1 (fr) * 2013-07-02 2015-01-08 矢崎総業株式会社 Unité de bobine
JP2015012764A (ja) * 2013-07-02 2015-01-19 矢崎総業株式会社 コイルユニット
JP2016111756A (ja) * 2014-12-03 2016-06-20 トヨタ自動車株式会社 非接触送電装置および非接触受電装置
GB2551731A (en) * 2016-06-28 2018-01-03 Bombardier Primove Gmbh Cable bearing arrangement and method of installing a cable bearing arrangement
JP2018535640A (ja) * 2016-09-23 2018-11-29 アップル インコーポレイテッドＡｐｐｌｅ Ｉｎｃ． ポータブル電子デバイス用のワイヤレス充電マット
US10622820B2 (en) 2016-09-23 2020-04-14 Apple Inc. Bobbin structure and transmitter coil for wireless charging mats
US10693308B2 (en) 2016-09-23 2020-06-23 Apple Inc. Interconnections for multi-layer transmitter coil arrangements in wireless charging mats
US10714951B2 (en) 2016-09-23 2020-07-14 Apple Inc. Structural framework for wireless charging mats
US20210152033A1 (en) * 2018-09-27 2021-05-20 Murata Manufacturing Co., Ltd. Wireless power transfer system
US11637460B2 (en) * 2018-09-27 2023-04-25 Murata Manufacturing Co., Ltd. Wireless power transfer system having an electric field shield member
EP3975188A4 (fr) * 2019-06-26 2022-08-03 Zhejiang Nurotron Biotechnology Co., Ltd. Dispositif de blindage contre les champs électriques qui n'affecte pas l'efficacité de transmission d'une bobine de transmission couplée sans fil
CN114696564A (zh) * 2020-12-30 2022-07-01 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） 一种悬浮推进一体化模组

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