WO2015093513A1 - 駐車支援装置及びシステム - Google Patents

駐車支援装置及びシステム Download PDF

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Publication number
WO2015093513A1
WO2015093513A1 PCT/JP2014/083359 JP2014083359W WO2015093513A1 WO 2015093513 A1 WO2015093513 A1 WO 2015093513A1 JP 2014083359 W JP2014083359 W JP 2014083359W WO 2015093513 A1 WO2015093513 A1 WO 2015093513A1
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WO
WIPO (PCT)
Prior art keywords
coil
parking
moving vehicle
power
power supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2014/083359
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English (en)
French (fr)
Japanese (ja)
Inventor
晋 徳良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Corp
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IHI Corp
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Filing date
Publication date
Application filed by IHI Corp filed Critical IHI Corp
Priority to EP14871468.6A priority Critical patent/EP3121057B1/en
Priority to CN201480053408.3A priority patent/CN105593072B/zh
Publication of WO2015093513A1 publication Critical patent/WO2015093513A1/ja
Priority to US15/180,182 priority patent/US10562396B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—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
    • 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
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D15/00—Steering not otherwise provided for
    • B62D15/02—Steering position indicators ; Steering position determination; Steering aids
    • B62D15/027—Parking aids, e.g. instruction means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/2006—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
    • 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
    • B60L2250/00—Driver interactions
    • B60L2250/16—Driver interactions by display
    • 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 parking assistance device and system.
  • This application claims priority based on Japanese Patent Application No. 2013-264199 filed in Japan on December 20, 2013, the contents of which are incorporated herein by reference.
  • a non-contact power feeding system that can perform power feeding from the power feeding side to the power receiving side in a non-contact manner has been actively performed.
  • Such a non-contact power feeding system can perform power feeding without connecting the power feeding side and the power receiving side with wiring (cable), and is highly convenient. For this reason, for example, it is promising for use in charging a battery mounted on a moving vehicle such as an electric vehicle (EV) or a plug-in hybrid vehicle (PHEV).
  • EV electric vehicle
  • PHEV plug-in hybrid vehicle
  • a coil on the power feeding side (a power feeding coil installed on the ground)
  • the relative positional relationship with the coil on the power receiving side (the power receiving coil installed in the moving vehicle) appropriate. For this reason, it is extremely important to park a moving vehicle that receives non-contact power feeding at a position where the relative positional relationship between the power feeding coil and the power receiving coil is appropriate.
  • Patent Document 1 includes a photographing device that photographs the outside of a vehicle, recognizes a power transmission unit based on an image photographed by the photographing device, and performs control for moving the vehicle to the installed position of the recognized power transmission unit.
  • a parking assistance device to perform is disclosed.
  • the probe coil is installed on the moving vehicle, and when the probe coil is close to the excitation coil, the voltage induced by the magnetic flux interlinked with the probe coil is detected. It is also possible to detect the position of the moving vehicle and adjust the parking position of the moving vehicle based on the detection result.
  • Patent Document 1 By the way, since the technique disclosed in Patent Document 1 described above performs movement control of the moving vehicle based on the recognition result of the power transmission unit, it is considered that the moving vehicle can be accurately parked at the installation position of the power transmission unit. .
  • the power transmission unit since the power transmission unit is recognized by performing image processing, there is a possibility that the size, shape, pattern, and the like of the power transmission unit that can be used may be limited.
  • the installation position and installation method may also be limited.
  • the excitation coil installed on the ground and the probe coil provided on the moving vehicle are overlapped in plan view. If the interlinkage magnetic flux does not increase, the voltage induced in the probe coil is too low to detect the position of the moving vehicle. For this reason, for example, when a feeding coil is used as the exciting coil, the position of the moving vehicle cannot be detected unless the probe coil installed in the moving vehicle is arranged immediately above the feeding coil.
  • This invention is made in view of the said situation, and it aims at providing the parking assistance apparatus and system which can adjust a parking position, referring the position of a moving vehicle.
  • 1st aspect of this invention is a parking assistance apparatus which assists the parking of the said moving vehicle to the parking area
  • the parking assistance apparatus which concerns on the 2nd aspect of this invention is set so that the said excitation coil may mutually differ in the said 1st aspect.
  • the number of turns of the exciting coil is such that the generated magnetic flux gradually increases or gradually decreases toward the feeding coil.
  • the exciting coils are arranged radially at regular intervals around the feeding coil, or They are arranged at a constant interval along the circumferential direction of a concentric circle with the feeding coil as the center.
  • a parking support system according to a fifth aspect of the present invention is a parking support system that supports parking in a parking area in which a power supply coil that supplies power in a non-contact manner is installed.
  • a parking support device a detection unit that detects magnetic flux generated by the excitation coil provided in the parking support device; a position calculation unit that determines a position of the moving vehicle based on a detection result of the detection unit; And a moving vehicle having a display unit that displays the position obtained by the calculation unit.
  • the parking assistance system of this invention which concerns on a 6th aspect is a said 5th aspect.
  • the said moving vehicle is equipped with the receiving coil which receives the electric power supplied in a non-contact manner from the said feeding coil.
  • the parking assistance system of this invention which concerns on a 7th aspect
  • WHEREIN In the said 6th aspect, the said receiving coil serves as the said detection part.
  • the parking assist system of the present invention according to an eighth aspect is the parking assistance system according to any one of the fifth to seventh aspects, wherein the display unit and the feeding coil are based on a calculation result of the position calculation unit. The positional relationship with the moving vehicle is displayed.
  • a plurality of excitation coils installed around a power supply coil included in the non-contact power supply device, and a plurality of resonances connected to the respective excitation coils and set to resonate due to leakage magnetic flux of the power supply coil.
  • a parking assistance device having a storage device is installed in association with the non-contact power feeding device, and a magnetic flux generated by an exciting coil provided in the parking assistance device is detected to determine and display the position of the moving vehicle. For this reason, there exists an effect that it is possible to adjust a parking position, referring the position of a moving vehicle.
  • FIG. 1 is a block diagram showing a main configuration of a parking assistance apparatus and system according to an embodiment of the present invention.
  • the parking assistance system 1 of the present embodiment includes a parking assistance device 20 and a moving vehicle 30 that are installed in association with the non-contact power feeding device 10, and is supplied from the non-contact power feeding device 10.
  • the mobile vehicle 30 is parked at a position where the power can be received.
  • the non-contact power supply apparatus 10 includes an external power supply 11, a rectifier circuit 12, a power supply circuit 13, and a power supply coil 14, generates electric power suitable for non-contact power supply to the moving vehicle 30, and is non-conductive to the moving vehicle 30. Power is supplied by contact.
  • the non-contact power supply device 10 is installed in, for example, a parking lot and supplies power to the moving vehicle 30 parked in a parking area (parking area) partitioned by a white line or the like in a non-contact manner.
  • the external power supply 11 has an output terminal connected to the input terminal of the rectifier circuit 12 and supplies the rectifier circuit 12 with AC power necessary for power feeding to the mobile vehicle 30.
  • the external power supply 11 is a system power supply that supplies three-phase AC power, such as 200 V or 400 V, or 100 V single-phase AC power.
  • the rectifier circuit 12 has an input terminal connected to the external power supply 11 and an output terminal connected to the power supply circuit 13.
  • the rectifier circuit 12 rectifies AC power supplied from the external power supply 11 to convert it into DC power, and converts the converted DC power. Power is output to the power feeding circuit 13.
  • the power supply circuit 13 has an input terminal connected to the rectifier circuit 12 and an output terminal connected to the power supply coil 14.
  • the power supply circuit 13 converts DC power from the rectifier circuit 12 into AC power, and converts the converted AC power into the power supply coil 14. Output to.
  • the power supply circuit 13 includes a resonance capacitor (not shown) that forms a power supply side resonance circuit together with the power supply coil 14, and the direct current from the rectifier circuit 12 is controlled by a power supply control circuit (not shown).
  • the power is converted into AC power (high frequency power) having a frequency higher than that of the AC power of the external power supply 11 and output to the feeding coil 14.
  • the feeding coil 14 feeds power to the moving vehicle 30 in a non-contact manner by generating a magnetic field corresponding to the high-frequency power supplied from the feeding circuit 13. Both ends of the power supply coil 14 are connected to the output terminal of the power supply circuit 13 and are installed on the ground or underground in an exposed state or molded with a nonmagnetic material such as plastic.
  • the feeding coil 14 is a coil (solenoid type coil) in which a conducting wire such as a round wire or a rectangular wire is wound in a spiral shape and a predetermined shape (for example, a rectangular tube shape), or a round wire.
  • a coil helical coil
  • a conducting wire such as a flat wire is spirally wound in the same plane.
  • the parking assist device 20 includes a plurality of excitation coils 21 and a plurality of resonators 22 connected to the respective excitation coils 21, and is provided to the parking area where the power supply coil 14 of the non-contact power supply device 10 is installed.
  • the excitation coil 21 is installed around the power supply coil 14 provided in the non-contact power supply apparatus 10 and generates a magnetic field (magnetic flux) that enables the moving vehicle 30 to detect its own position.
  • the exciting coil 21 is installed on the ground or underground like the feeding coil 14.
  • the exciting coil 21 is a coil in which a conducting wire such as a round wire or a rectangular wire is wound in a spiral shape and a predetermined shape (for example, an annular shape), and leakage of the feeding coil 14 of the non-contact power feeding device 10 is performed. It is installed in consideration of the magnetic field (leakage magnetic flux) or the direction of the magnetic field formed by another exciting coil 21.
  • the exciting coil 21 arranged closest to the power feeding coil 14 is arranged so that the coil surface (the winding surface of the conducting wire) is orthogonal to the leakage magnetic field of the power feeding coil 14 as much as possible.
  • the excitation coil 21 only needs to have at least a part of the lead wire connected to the resonator 22 orthogonal to the leakage magnetic field of the power supply coil 14.
  • excitation coils 21 are set to have different numbers of turns so as to generate magnetic fields of different magnitudes. Thereby, if the moving vehicle 30 detects the magnitude
  • the number of turns of the excitation coil 21 is set so that the magnitude of the generated magnetic field gradually increases toward the power supply coil 14 of the non-contact power supply device 10 or gradually decreases.
  • FIG. 2 is a plan view showing an arrangement example of excitation coils in the parking assistance device according to the embodiment of the present invention.
  • the excitation coils 21 are arranged radially at regular intervals (for example, about several tens of centimeters) around the power supply coil 14 of the non-contact power supply device 10 in a rectangular parking area, or are supplied with power.
  • the coils 14 are arranged at regular intervals along the circumferential direction of a concentric circle centered on the coil 14.
  • the excitation coil 21 is arranged at a constant interval on a straight line extending in the direction in which the moving vehicle 30 advances and retreats through the power supply coil 14 (advancing and retreating direction), and Excitation coils 21 are arranged at regular intervals on a straight line extending in a direction orthogonal to the above-described advance / retreat direction.
  • the exciting coils 21 that are not arranged on these straight lines are arranged at a substantially constant interval along the circumferential direction of a concentric circle with the feeding coil 14 as the center.
  • the interval between the concentric circles and the interval between the exciting coils 21 in the circumferential direction of the concentric circles are also set to, for example, about several tens of centimeters.
  • the exciting coil 21 disposed closest to the feeding coil 14 resonates with the leakage magnetic field of the feeding coil 14 to generate a magnetic field, but other exciting coils 21 are generated by other exciting coils 21. Resonates with the generated magnetic field to generate a magnetic field. For this reason, the excitation coils 21 other than the excitation coil 21 disposed closest to the power supply coil 14 can be said to be relay coils for causing the other excitation coils 21 to resonate.
  • the resonators 22 are respectively connected to the above-described exciting coils 21, and the circuit composed of the exciting coils 21 and the resonators 22 resonates due to the leakage magnetic field of the power feeding coil 14 or the magnetic field formed by the other exciting coils 21. It is set as follows. Specifically, the resonator 22 includes a capacitor (not shown) that forms a resonance circuit together with the excitation coil 21, and when a leakage magnetic field is generated from the power supply coil 14, or another excitation coil 21 forms a magnetic field. In some cases, the magnetic fields resonate.
  • the moving vehicle 30 is a car that is driven by a driver and travels on a road, and is, for example, an electric car or a hybrid car that includes a motor as a power generation source.
  • the moving vehicle 30 includes a power receiving coil 31 (detecting unit), a power receiving circuit 32, a charging circuit 33, a storage battery 34, a contactor 35, an inverter 36, a motor 37, a control unit 38 (position calculating unit), and A display device 39 (display unit) is provided.
  • the power receiving circuit 32, the charging circuit 33, and the inverter 36 are connected to the DC bus B1
  • the charging circuit 33 and the storage battery 34 are connected to the DC bus B2.
  • the power receiving coil 31 is a solenoid type coil or a helical type coil similarly to the power feeding coil 14 described above, and is provided at the bottom of the moving vehicle 30. Both ends of the power receiving coil 31 are connected to the input ends of the power receiving circuit 32, and an electromotive force is generated by electromagnetic induction when the electromagnetic field of the power feeding coil 14 acts, and the generated electromotive force is output to the power receiving circuit 32.
  • the power receiving coil 31 is also used to detect a magnetic field formed by the excitation coil 21 provided in the parking assist device 20 described above.
  • the power receiving circuit 32 has an input terminal connected to both ends of the power receiving coil 31 and an output terminal connected to the DC bus B1, converts the AC power supplied from the power receiving coil 31 into DC power, and converts the converted DC power. Is output to the DC bus B1.
  • the power reception circuit 32 includes a resonance capacitor (not shown) that forms a power reception resonance circuit together with the power reception coil 31.
  • the capacitance of the resonance capacitor of the power reception circuit 32 may be set so that the resonance frequency of the power reception side resonance circuit is the same as the resonance frequency of the power supply side resonance circuit described above.
  • the charging circuit 33 has an input terminal connected to the DC bus B1 and an output terminal connected to the DC bus B2. Under the control of the control unit 38, the charging circuit 33 receives power (DC power) from the power receiving circuit 32. To charge.
  • the storage battery 34 is a rechargeable battery (for example, a secondary battery such as a lithium ion battery or a nickel metal hydride battery) mounted on the moving vehicle 30 and supplies power to the motor 37 and the like.
  • the contactor 35 is provided between the DC bus B1 and the DC bus B2, and switches between connecting the DC bus B1 and the DC bus B2 to a disconnected state under the control of the control unit 38. Specifically, when charging the storage battery 34, the contactor 35 is controlled so that the DC bus B1 and the DC bus B2 are disconnected, whereby the storage battery 34, the inverter 36, and the power receiving circuit 32 are disconnected, The motor 37 is electrically disconnected from the storage battery 34. On the other hand, when the electric power of the storage battery 34 is discharged, control is performed so that the DC bus B1 and the DC bus B2 are connected to each other, whereby the storage battery 34, the inverter 36, and the power receiving circuit 32 are connected.
  • the inverter 36 drives the motor 37 using electric power supplied from the storage battery 34 via the contactor 35 under the control of the control unit 38.
  • the motor 37 is mounted on the moving vehicle 30 as a power generation source that generates power for moving the moving vehicle 30, and generates power according to the drive of the inverter 36.
  • motors such as a permanent magnet type synchronous motor and an induction motor, can be used.
  • the control unit 38 controls the operation of the moving vehicle 30 in an integrated manner.
  • the control unit 38 is based on information output from the charging circuit 33 (information indicating the amount of power supplied from the power receiving circuit 32 to the DC bus B1, information indicating the state of charge (SOC) of the storage battery 34, etc.)
  • the charging circuit 33 is controlled.
  • the control unit 38 monitors the input voltage of the charging circuit 33 (the output voltage of the power receiving circuit 32), and obtains the position of the moving vehicle 30 using the monitoring result.
  • the exciting coil 21 provided in the parking assist device 20 has the number of turns so as to generate magnetic fields having different magnitudes. Therefore, if the moving speed of the moving vehicle 30 is constant, the receiving coil The magnitude of the magnetic field detected at 31 depends on which excitation coil 21 of the excitation coil 21 the receiving coil 31 of the moving vehicle 30 is disposed above.
  • the control unit 38 uses the monitoring result of the input voltage of the charging circuit 33 to determine the position of the moving vehicle 30. Seeking.
  • FIG. 3 is a diagram showing a display example of a display device provided in a moving vehicle in one embodiment of the present invention.
  • the display device 39 provided in the moving vehicle 30 displays a current location V indicating the current position of the moving vehicle 30 and a target point R indicating the position where the moving vehicle 30 should be parked.
  • the display position of the current location V displayed on the display device 39 is changed by moving the moving vehicle 30. For this reason, if the driver drives and parks the moving vehicle 30 so that the current location V coincides with the target point R, the positions of the feeding coil 14 of the non-contact feeding device 10 and the receiving coil 31 of the moving vehicle 30 will be described. The relationship can be made appropriate.
  • FIG. 4 is a flowchart showing the operation of the parking assistance system according to the embodiment of the present invention.
  • the driver drives the moving vehicle 30 and parks the moving vehicle 30 by entering the rectangular parking area shown in FIG. 2 backward.
  • a sensor (not shown) for detecting the entry of the moving vehicle 30 is provided in the rectangular parking area shown in FIG.
  • the power supply circuit 13 of the non-contact power supply apparatus 10 is controlled by a power supply control circuit (not shown), and high frequency power is supplied from the power supply circuit 13 to the power supply coil 14. As a result, a magnetic field corresponding to the supplied high-frequency power is generated from the feeding coil 14.
  • the exciting coil 21 disposed in the vicinity of the feeding coil 14 resonates with the leakage magnetic field to generate a magnetic field.
  • the exciting coil 21 disposed in the vicinity of the exciting coil 21 resonates to generate a magnetic field.
  • the excitation coils 21 arranged around the power supply coil 14 resonate sequentially, and a magnetic field is generated from all the excitation coils 21 provided in the parking assistance device 20.
  • magnetic fields of different magnitudes are generated from the exciting coil 21 provided in the parking assist device 20.
  • the control unit 38 determines whether or not (step S11). Specifically, the control unit 38 determines whether or not the input voltage of the charging circuit 33 (the output voltage of the power receiving circuit 32) has changed.
  • step S11 Immediately after the moving vehicle 30 enters the rectangular parking area shown in FIG. 2, the exciting coil 21 of the parking assist device 20 and the power receiving coil 31 of the moving vehicle 30 are not overlapped in plan view. For this reason, it is judged by the control part 38 that the voltage resulting from the magnetic field which the exciting coil 21 generate
  • step S12 the process which calculates the position of the moving vehicle 30 based on the detected voltage value is performed by the control part 38 (step S12).
  • the calculated position is displayed on the display device 39 (step S13). Specifically, as shown in FIG. 3, a current position V indicating the current position of the moving vehicle 30 and a target point R indicating the position where the moving vehicle 30 should be parked are displayed on the display device 39.
  • the driver of the moving vehicle 30 drives the moving vehicle 30 so that the current location V matches the target point R while referring to the contents of the display device 39.
  • control unit 38 determines whether or not parking is completed. For example, the control unit 38 determines whether or not the shift lever is set to the parking range (P range) and the side brake is applied. When it is determined that parking is not completed (when the determination result of step S14 is “NO”), the magnetic field generated by the excitation coil 21 is detected to calculate the position of the moving vehicle 30, and the calculated position Is displayed on the display device 39 (steps S12 and S13).
  • step S14 when it is determined that the parking is completed (when the determination result of step S14 is “YES”), the series of processes shown in FIG.
  • a command signal for instructing the non-contact power feeding device 10 to start charging is sent from the control unit 38 of the moving vehicle 30. Is output.
  • This command signal is transmitted by wireless communication, for example.
  • the power supply circuit 13 of the non-contact power supply apparatus 10 is controlled by a power supply control circuit (not shown), and high-frequency power is output from the power supply circuit 13 to the power supply coil 14.
  • a power supply control circuit not shown
  • high-frequency power is output from the power supply circuit 13 to the power supply coil 14.
  • electric power is supplied from the power supply coil 14 to the power receiving coil 31 of the moving vehicle 30 in a non-contact manner, and the storage battery 34 is charged by the charging circuit 33 under the control of the control unit 38.
  • the parking having the plurality of exciting coils 21 and the plurality of resonators 22 respectively connected to the exciting coils 21 around the feeding coil 14 provided in the non-contact power feeding apparatus 10.
  • a support device 20 is installed along with the magnetic field generated from each of the exciting coils 21 by resonating a circuit composed of the exciting coil 21 and the resonator 22 by a leakage magnetic field from the feeding coil 14. Then, the position of the moving vehicle 30 is obtained according to the magnitude of the magnetic field generated from the excitation coil 21 and displayed on the display device 39. For this reason, the driver of the moving vehicle 30 can adjust the parking position while referring to the position of the moving vehicle 30.
  • 5A, 5B and 5C are diagrams for explaining a first modification of the parking support system according to the embodiment of the present invention.
  • the description has been made on the assumption that the moving speed of the moving vehicle 30 is constant.
  • the accelerator pedal and the brake pedal are often switched frequently. It is considered rare that the moving speed of the moving vehicle 30 is constant.
  • the input voltage of the charging circuit 33 monitored by the control unit 38 is large even when the power receiving coil 31 of the moving vehicle 30 passes over the same exciting coil 21. Changes.
  • the control unit 38 obtains the position of the moving vehicle 30 using the monitoring result of the input voltage of the charging circuit 33, if the input voltage of the charging circuit 33 changes according to the speed of the moving vehicle 30, the control unit 38 moves. There is a possibility that the position of the vehicle 30 is erroneously calculated. In this modification, the position of the moving vehicle 30 is obtained in consideration of the speed of the moving vehicle 30.
  • the relationship between the power receiving coil 31 and the exciting coil 21 is, for example, as follows. First, as shown in FIG. 5A, the overlapping area gradually increases in plan view, and then, as shown in FIG. 5B, the overlapping area becomes constant in plan view. Subsequently, as shown in FIG. 5C, the overlapping area in the plan view gradually decreases, and finally, the overlapping area in the plan view becomes zero.
  • the input voltage of the charging circuit 33 shows, for example, a change between times t1 and t2 in FIG. 5D.
  • the input voltage of the charging circuit 33 becomes zero (see the period T from time t2 to t3 in FIG. 5D).
  • the input voltage of the charging circuit 33 shows, for example, a change between times t3 and t4 in FIG. 5D.
  • the length of the power receiving coil 31 in the traveling direction of the moving vehicle 30 is A, and the diameter of the exciting coil 21 is B.
  • the distance at which the relationship between the power receiving coil 31 and the exciting coil 21 becomes the relationship shown in FIG. 5B is represented by (AB). Therefore, if the period T shown in FIG. 5D is obtained, the speed of the moving vehicle 30 is obtained by (AB) / T. And if the magnitude
  • FIG. 6 is a diagram for explaining a second modification of the parking support system according to the embodiment of the present invention.
  • the position of the moving vehicle 30 is obtained, and in the first modification described above, the moving speed of the moving vehicle 30 is obtained in addition to the position of the moving vehicle 30.
  • this modification makes it possible to determine the moving direction of the moving vehicle 30.
  • auxiliary excitation coils 21 a to 21 d are provided around the excitation coil 21 provided in the parking assistance device 20.
  • the auxiliary excitation coils 21a to 21d are set so that the number of turns is different from each other so as to generate magnetic fields of different magnitudes, similarly to the excitation coil 21.
  • the auxiliary excitation coils 21a to 21d are connected to resonators (not shown) similar to the resonator 22 connected to the excitation coil 21, respectively. Therefore, the auxiliary excitation coils 21a to 21d are configured to resonate due to the magnetic field generated by the excitation coil 21. Note that the number of auxiliary excitation coils provided in one excitation coil 21 is arbitrary.
  • the control unit 38 of the mobile vehicle 30 can determine from which direction the excitation coil 21 is approached. In addition, you may make it display the approach direction of the moving vehicle 30 which the control part 38 calculated
  • FIG. 7 is a view for explaining a third modification of the parking support system according to the embodiment of the present invention.
  • the magnetic field generated by the exciting coil 21 (and the auxiliary exciting coils 21a to 21d) is detected by the power receiving coil 31 of the moving vehicle 30.
  • a dedicated sensor 40 detection unit for detecting the magnetic field generated by the excitation coil 21 (further, the auxiliary excitation coils 21a to 21d) is provided. By providing such a dedicated sensor 40, the magnetic field generated by the exciting coil 21 can be detected with high sensitivity.
  • the parking assistance apparatus and system by one Embodiment of this invention were demonstrated, this invention is not restrict
  • the example in which the excitation coil 21 is arranged around the power supply coil 14 has been described.
  • the plan view is used.
  • the exciting coil 21 may be installed in a state where the feeding coil 14 partially overlaps.
  • the excitation coils 21 are arranged at regular intervals around the power supply coil 14 .
  • the excitation coils 21 may be arranged discontinuously.
  • an example has been described in which the exciting coil 21 is set so that the number of turns is different from each other so as to generate different magnetic fields.
  • magnetic fields having different magnitudes may be generated from the exciting coil 21.
  • the excitation coil 21 has been described as resonating due to the magnetic field generated by the feeding coil 14 or another excitation coil 21, but the present invention is not limited to this aspect.
  • the excitation coil 21 may generate a magnetic field by the magnetic field generated by the feeding coil 14 or the other excitation coil 21, and the resonance circuit formed by the excitation coil 21 and the resonator 22. Does not need to resonate.
  • the magnitude of the magnetic field generated by the exciting coil 21 varies depending on the presence or absence of resonance, if the exciting coil 21 generates some magnetic field, an induced voltage is generated in the power receiving coil 31 on the moving vehicle 30 side, and the charging circuit 33.
  • the moving vehicle 30 can detect its own position as reflected by the magnitude of the input voltage.
  • the magnetic field resonance method is adopted as a method for non-contact power feeding, but an electromagnetic induction method may be adopted.
  • the parking assistance apparatus and system which can adjust a parking position, referring the position of a moving vehicle can be provided.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (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)
PCT/JP2014/083359 2013-12-20 2014-12-17 駐車支援装置及びシステム Ceased WO2015093513A1 (ja)

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EP14871468.6A EP3121057B1 (en) 2013-12-20 2014-12-17 Parking assistance apparatus and system
CN201480053408.3A CN105593072B (zh) 2013-12-20 2014-12-17 停车辅助装置以及系统
US15/180,182 US10562396B2 (en) 2013-12-20 2016-06-13 Parking assistance apparatus and system

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JP2013264199A JP6427873B2 (ja) 2013-12-20 2013-12-20 駐車支援装置及びシステム

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JP6427873B2 (ja) 2018-11-28
US20160288657A1 (en) 2016-10-06
JP2015120378A (ja) 2015-07-02
CN105593072B (zh) 2018-06-12
EP3121057A4 (en) 2017-07-26
EP3121057A1 (en) 2017-01-25
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US10562396B2 (en) 2020-02-18

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