WO2015083516A1 - Contactless electric power transmission system and power receiving device - Google Patents

Contactless electric power transmission system and power receiving device Download PDF

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Publication number
WO2015083516A1
WO2015083516A1 PCT/JP2014/080037 JP2014080037W WO2015083516A1 WO 2015083516 A1 WO2015083516 A1 WO 2015083516A1 JP 2014080037 W JP2014080037 W JP 2014080037W WO 2015083516 A1 WO2015083516 A1 WO 2015083516A1
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WIPO (PCT)
Prior art keywords
power
power transmission
state
unit
communication unit
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PCT/JP2014/080037
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French (fr)
Japanese (ja)
Inventor
孝治 比嘉
健人 榊原
白井　邦佳
博樹 戸叶
Original Assignee
株式会社 豊田自動織機
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Publication of WO2015083516A1 publication Critical patent/WO2015083516A1/en

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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
    • 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
    • B60L53/39—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer with position-responsive activation of primary coils
    • 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
    • B60L53/65—Monitoring or controlling charging stations involving identification of vehicles or their battery types
    • 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
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—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
    • 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)
    • 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
    • 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
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/14—Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Definitions

  • the present invention relates to a non-contact power transmission system and a power receiving device.
  • a non-contact power transmission system that does not use a power cord or power transmission cable is known.
  • the non-contact power transmission system includes, for example, a power transmission device having a primary coil to which AC power is input and a power reception device having a secondary coil that can receive AC power from the primary coil in a non-contact manner.
  • a power transmission device having a primary coil to which AC power is input and a power reception device having a secondary coil that can receive AC power from the primary coil in a non-contact manner.
  • Patent Document 1 for example, AC power is transmitted from a power transmission device to a power reception device in a non-contact manner by causing magnetic resonance between a primary coil and a secondary coil.
  • the AC power received by the power receiving device is used, for example, for charging a vehicle battery of a vehicle on which the power receiving device is mounted.
  • a plurality of power transmission devices may be provided. In this case, it is necessary to grasp which power transmission device and the power receiving device among the plurality of power transmission devices perform power transmission.
  • An object of the present invention is to provide a non-contact power transmission system and a power receiving apparatus that can appropriately grasp a combination of a power transmitting apparatus and a power receiving apparatus that perform power transmission among a plurality of power transmitting apparatuses.
  • the contactless power transmission system that achieves the above object includes a primary coil to which AC power is input, a plurality of power transmission devices each having a power transmission communication unit that performs wireless communication, and the AC that is input to the primary coil.
  • a secondary coil that can receive power in a contactless manner, a power receiving communication unit that performs wireless communication, and a power receiving device that includes a grasping unit that grasps the power transmitting device, and the grasping unit transmits two or more of the plurality of power transmitting devices.
  • connection state setting unit that sets the connection state; a transmission determination unit that determines whether or not power transmission is performed between the power transmission device and the power reception device that are in the connection state; and A continuation determination unit that continues the connection state when it is determined that transmission is performed, and that cancels the connection state when the transmission determination unit determines that the power transmission is not performed.
  • the state determined to continue the connection state by the continuation determination unit is defined as a connection continuation state, and a state that is not the connection state and is not the connection continuation state is defined as an unconnected state
  • the connection The state setting unit is configured to set the unconnected power transmission device and the power receiving device as the one power transmission device to the connected state
  • the grasping unit is configured to include the two or more power transmission devices. And having the power transmission communication unit capable of wireless communication with the power receiving communication unit, and grasping at least the unconnected power transmission device excluding the connection continuation state.
  • a power receiving device that achieves the above object is capable of receiving AC power in a contactless manner from a power transmission device having a primary coil to which AC power is input and a power transmission communication unit that performs wireless communication.
  • a secondary coil capable of receiving the AC power input to the coil; a power receiving communication unit that performs wireless communication; a grasping unit that grasps the power transmission device; and the grasping unit includes two or more of the plurality of power transmission devices.
  • connection state setting unit that sets the connection state, a transmission determination unit that determines whether power transmission is performed between the power transmission device and the power reception device that are in the connection state, and the transmission determination unit that determines the power Transmission line
  • the connection state is continued when it is determined to be, while the transmission determination unit determines that the power transmission is not performed, the continuation determination unit to release the connection state
  • the connection state setting The unit sets the power receiving device and the unconnected power transmission device as the first power transmission device to the connected state
  • the grasping unit includes the two or more power transmission devices, It has the power transmission communication unit capable of wireless communication with the power reception communication unit, and grasps at least the unconnected power transmission device excluding the connection continuation state.
  • summary of a non-contact electric power transmission system The block diagram which shows the electric constitution of the non-contact electric power transmission system of FIG. It is a timing chart which shows a 1st case, (a) shows the power reception aspect of a 1st power receiving apparatus, (b) shows the power transmission aspect of a 1st power transmission apparatus, (c) is the power transmission aspect of a 2nd power transmission apparatus. (D) shows the power receiving mode of the second power receiving apparatus.
  • the non-contact power transmission system 10 includes a plurality of power transmission devices 11 (charging stations) and power reception devices 12 (vehicle side devices) that can transmit power in a non-contact manner.
  • the power receiving device 12 is mounted on the vehicle C.
  • the plurality of power transmission devices 11 are respectively installed corresponding to the plurality of parking spaces S1 and S2 in which the vehicle C can be parked.
  • the power transmission device 11 installed in the vicinity of the first parking space S1 is referred to as a first power transmission device 11a
  • the power transmission device 11 installed in the vicinity of the second parking space S2 is referred to as a second power transmission device 11b. That's it.
  • the power transmission devices 11a and 11b have the same configuration.
  • the first power transmission device 11 a includes a first power supply unit 21 a that can output AC power having a predetermined frequency.
  • the 1st power supply part 21a converts the system electric power input from the system power supply E as an infrastructure into alternating current power, and outputs the converted alternating current power.
  • the 1st power transmission apparatus 11a is provided with the 1st primary coil (power transmission part) 22a into which the alternating current power output from the 1st power supply part 21a is input.
  • the first power transmission device 11a includes a first power transmission controller 23a as a power transmission control unit that performs various controls of the first power transmission device 11a, and a first power transmission communication unit 24a that performs wireless communication.
  • the first power transmission controller 23a receives a signal from the first power transmission communication unit 24a, and controls the first power transmission communication unit 24a so that a predetermined signal is transmitted from the first power transmission communication unit 24a.
  • the 2nd power transmission apparatus 11b is provided with the 2nd power supply part 21b, the 2nd primary coil 22b, the 2nd power transmission controller 23b, and the 2nd power transmission communication part 24b similarly to the 1st power transmission apparatus 11a. Since these structures are the same as each structure of the 1st power transmission apparatus 11a, description is abbreviate
  • the primary coils 22a and 22b are disposed in the parking spaces S1 and S2, respectively. Specifically, the first primary coil 22a is disposed in the first parking space S1, and the second primary coil 22b is disposed in the second parking space S2.
  • the power receiving device 12 includes a secondary coil (power receiving unit) 31 capable of receiving AC power in a non-contact manner from either of the primary coils 22a and 22b.
  • the primary coils 22a and 22b and the secondary coil 31 are configured to be capable of magnetic field resonance.
  • a primary capacitor (not shown) is connected to each primary coil 22a, 22b in series or in parallel to form a resonance circuit.
  • a secondary capacitor (not shown) is connected to the secondary coil 31 in series or in parallel to form a resonance circuit.
  • the resonance frequencies of the resonance circuit including the first primary coil 22a, the resonance circuit including the second primary coil 22b, and the resonance circuit including the secondary coil 31 are set to be the same.
  • the secondary coil 31 is disposed at a position where it can magnetically resonate with either of the primary coils 22a and 22b.
  • the resonance circuit including the primary coil and the resonance circuit including the secondary coil 31 perform magnetic field resonance.
  • the secondary coil 31 receives AC power from the primary coil in a non-contact manner.
  • the frequency of the AC power output from each of the power supply units 21a and 21b may be set to be the same as or close to the resonance frequency of each of the resonance circuits.
  • the secondary coil 31 is disposed at a position that can face either of the primary coils 22 a and 22 b, specifically, at the bottom of the vehicle C.
  • the secondary coil 31 faces the primary coil installed in the parked parking space, and magnetic resonance with the primary coil. Arranged at possible positions.
  • the power receiving device 12 includes a rectifier 32 that rectifies the AC power received by the secondary coil 31 and a vehicle battery 33 to which the DC power rectified by the rectifier 32 is input. . Thereby, the vehicle battery 33 is charged.
  • the power receiving device 12 includes a detection unit 34 that detects AC power received by the secondary coil 31 (hereinafter simply referred to as “received power”).
  • the detection unit 34 transmits the detection result to a power reception controller 35 as a power reception control unit provided in the power reception device 12.
  • the power receiving controller 35 can grasp the received power. That is, the power reception controller 35 grasps the pattern of the received power such as the power value of the received power and the time when the received power is detected based on the detection result of the detection unit 34.
  • the power receiving device 12 includes an SOC sensor (not shown) that detects the state of charge (SOC: State of Charge) of the vehicle battery 33 and transmits the detection result to the power receiving controller 35. Thereby, the power receiving controller 35 can grasp the state of charge of the vehicle battery 33.
  • SOC State of Charge
  • the power receiving device 12 performs wireless communication, and includes a power receiving communication unit 36 that can exchange signals with the power transmission communication units 24a and 24b.
  • the power reception controller 35 receives a signal from the power reception communication unit 36 and controls the power reception communication unit 36 so that a predetermined signal is transmitted.
  • wireless communicable range of each power transmission communication part 24a, 24b and the power receiving communication part 36 is set more widely than 1st parking space S1 and 2nd parking space S2. For this reason, in the present embodiment in which a plurality of power transmission devices 11 are installed, the plurality of power transmission devices 11 are included in the wireless communicable range of the power reception communication unit 36. That is, the power receiving communication unit 36 can wirelessly communicate with the power transmission communication units (the first power transmission communication unit 24a and the second power transmission communication unit 24b) of the plurality of power transmission devices 11.
  • wireless communication methods such as Bluetooth (registered trademark), Zigbee (registered trademark), and Wi-fi can be considered.
  • the contactless power transmission system 10 of this embodiment has a configuration for grasping a combination of a power transmission device 11 and a power reception device 12 that perform power transmission. This configuration will be described in detail below.
  • the power receiving controller 35 includes a grasping unit 41 that grasps, that is, recognizes, the power transmission device 11 existing around the power receiving controller 35.
  • the grasping unit 41 controls the power receiving communication unit 36 so that the search signal is transmitted by broadcast as a predetermined response request signal.
  • the power transmission controllers 23a and 23b determine whether or not the connection is continued.
  • the search response signal including the identification information of the power transmission devices 11a and 11b, which is information related to the power transmission devices 11a and 11b, is transmitted toward the power receiving communication unit 36.
  • the power transmission communication units 24a and 24b are controlled.
  • the power transmission controllers 23a and 23b control the power transmission communication units 24a and 24b so that the search response signal is not transmitted in the connection continuation state.
  • the connection continuation state will be described later.
  • the grasping unit 41 grasps, that is, identifies the power transmission device 11 having the power transmission communication unit capable of wireless communication with the power receiving communication unit 36 based on the search response signal received by the power receiving communication unit 36. A list of power transmission devices 11 is created.
  • the number of the first primary coils 22a included in the first power transmission device 11a is one. That is, the 1st power transmission apparatus 11a and the 1st primary coil 22a respond
  • the power receiving controller 35 includes a connection state setting unit 42.
  • the grasping unit 41 grasps, that is, recognizes two or more power transmission devices 11 among the plurality of power transmission devices 11, the connection state setting unit 42 transmits one power transmission in an unconnected state among the two or more power transmission devices 11.
  • the device 11 and the power receiving device 12 are set to a connection state (or a communication established state) in which a connection via the power transmission communication unit and the power receiving communication unit 36 of the one power transmission device 11 is established.
  • the unconnected state is a state that is neither a connected state nor a connected state.
  • connection state setting unit 42 selects, for example, the first power transmission device 11a as one power transmission device 11 among the two or more power transmission devices 11. And the connection state setting part 42 transmits a connection request signal with respect to the 1st power transmission communication part 24a of the selected 1st power transmission apparatus 11a using the power receiving communication part 36.
  • the first power transmission controller 23a determines whether the first power transmission device 11a is in a connected state or an unconnected state when the connection request signal is received by the first power transmission communication unit 24a. When the first power transmission device 11a is not connected, the first power transmission controller 23a sets the first power transmission device 11a to a connected state connected to the power receiving device 12, and sets the first power transmission communication unit 24a. To transmit a connection state response signal.
  • the connection state setting unit 42 sets the power reception device 12 to the connection state connected to the first power transmission device 11a when the power reception communication unit 36 receives the connection state response signal. As a result, information regarding received power can be exchanged between the first power transmission device 11a and the power reception device 12.
  • connection state is a state in which information about received power can be exchanged.
  • the connection state is a pairing state in which the first power transmission device 11a and the power reception device 12 establish (authenticate) information exchange with each other via the first power transmission communication unit 24a and the power reception communication unit 36. It can be said that there is.
  • connection state setting unit 42 sets a flag indicating the connection state in a predetermined storage area based on the connection state. Thereby, the power receiving controller 35 can grasp whether or not it is in the connected state by checking the presence or absence of the flag. Similarly, the first power transmission controller 23a sets a flag indicating the connection state in a predetermined storage area based on the connection state.
  • 1st power transmission controller 23a transmits the connection rejection signal which refuses a connection to the power receiving communication part 36 using the 1st power transmission communication part 24a, when the 1st power transmission apparatus 11a is already a connection state.
  • the said 1st power transmission apparatus 11a means that the power reception apparatus 12 different from the power reception apparatus 12 which transmitted the connection request signal is already a connection state. To do. That is, each first power transmission device 11a is restricted from being connected to a plurality of power receiving devices 12 at the same time.
  • connection state setting unit 42 determines whether another power transmission device 11 (for example, the second power transmission device 11b) among the two or more power transmission devices 11 grasped by the grasping unit 41. ) And a process (connection request) for establishing a connection state. That is, the connection state setting unit 42 sequentially issues connection requests until an unconnected power transmission device 11 is found among the two or more power transmission devices 11 grasped by the grasping unit 41.
  • connection state setting unit 42 does not enter the connection state despite the connection request to all of the two or more power transmission apparatuses 11 grasped by the grasping unit 41, that is, the connection is rejected. In the case of being made, connection requests are sequentially made to the power transmission apparatuses 11 again at predetermined intervals. And the connection state setting part 42 determines with it being an error, when it does not become a connection state, although the connection request with respect to all the power transmission apparatuses 11 was performed in multiple times.
  • connection state setting unit 42 may set and update the state of each power transmission device 11 with respect to the list created by the grasping unit 41. For example, the connection state setting unit 42 first sets each power transmission device 11 in the list as unconnected as an initial state. Then, the connection state setting unit 42 updates the power transmission device 11 for which the connection request has been rejected as pending, and updates the power transmission device 11 that has been set to the connection state and then released from the connection state as transmission determined. Good. The connection state setting unit 42 may make a connection request again to the pending power transmission device 11 depending on the situation, but performs a connection request again to the power transmission device 11 that has been determined to be transmitted. Absent.
  • the power receiving controller 35 is connected between the one power transmitting device 11 (for example, the first power transmitting device 11a) set in the connection state and the power receiving device 12 based on the connection state set by the connection state setting unit 42.
  • a transmission determination unit 43 that determines whether or not to perform power transmission is provided.
  • the power transmission device 11 set in the connection state corresponds to the target power transmission device.
  • the transmission determination unit 43 uses the power receiving communication unit 36 to request power transmission to the first power transmission communication unit 24a so that the identification power is input to the first primary coil 22a of the connected first power transmission device 11a. A signal (instruction signal) is transmitted.
  • the first power transmission controller 23a When the power transmission request signal is received by the first power transmission communication unit 24a, the first power transmission controller 23a includes the first primary coil 22a over a first period T1 in which identification power is predetermined as AC power. 1st power supply part 21a is controlled so that it may be inputted into.
  • the transmission determination unit 43 determines whether or not AC power is being received in a situation where identification power is input to the first primary coil 22a. Specifically, the transmission determination unit 43 is in a connection state this time when AC power is not received by the secondary coil 31 in a situation where identification power is input to the first primary coil 22a. It determines with electric power transmission not being performed between the power transmission apparatus 11 (1st power transmission apparatus 11a) and the power receiving apparatus 12.
  • the threshold value may be, for example, a value obtained by multiplying the power value of the identification power by a predetermined threshold efficiency.
  • the transmission determination unit 43 performs the second power reception determination when it is determined that the AC power is received by the first power reception determination. Specifically, the transmission determination unit 43 instructs the first power transmission controller 23a to input identification power to the first primary coil 22a over the second period T2, and causes the secondary coil 31 to perform alternating current. It is determined whether power is being received.
  • the first period T1 and the second period T2 are the same.
  • the transmission determination unit 43 sets a first interval period Ti1 from the end of input of the first identification power to the start of input of the second identification power, the first power transmission apparatus 11a that is the target power transmission apparatus. It determines based on the specific information 23aa. Then, the transmission determination unit 43 instructs the first power transmission controller 23a to input the second identification power when the first interval period Ti1 has elapsed from the end of the first identification power input. Specifically, the transmission determination unit 43 transmits the second transmission request signal when the first interval period Ti1 has elapsed from the end of the first identification power input.
  • the power transmission controllers 23a and 23b include specific information 23aa and 23bb of the power transmission devices 11a and 11b, respectively.
  • the transmission determination unit 43 obtains unique information (unique information 23aa or unique information 23bb) from the connected power transmission device 11 (the first power transmission device 11a or the second power transmission device 11b) at the stage before executing the first power reception determination. Get it. And the transmission determination part 43 determines an interval period (1st interval period Ti1 or 2nd interval period Ti2) using the said specific information.
  • the unique information is arbitrary as long as it is different for each power transmission device 11 (power transmission device 11 set to the connection state) as the target power transmission device.
  • the identification information of the power transmission device 11 and the power transmission communication units 24a and 24b The channel information used for communicating with the power receiving communication unit 36 can be considered.
  • Communication ID information such as PAN ID (Personal Area Network Identifier) and SSID (Service Set Identifier) may also be used.
  • the difference between the first interval period Ti1 when the target power transmission apparatus is the first power transmission apparatus 11a and the second interval period Ti2 corresponding to the second power transmission apparatus 11b is longer than the second period T2. Is set.
  • the first period T1 is the same regardless of each power transmission device 11.
  • the transmission determination unit 43 determines whether the one power transmission device 11 (first power transmission device 11a) and the power reception device 12 that are in the connected state this time are connected. It is determined that power transmission is performed between them. On the other hand, when it is determined that the AC power is not received by the second power reception determination, the transmission determination unit 43 is connected between the one power transmission device 11 and the power reception device 12 that are in the connection state this time. It is determined that power transmission is not performed.
  • the transmission determination unit 43 enters the current connection state when it is determined that AC power is received by the secondary coil 31 in both the first power reception determination and the second power reception determination. It is determined that the power transmission device 11 and the power reception device 12 are a combination in which power transmission is performed.
  • connection state setting is a condition for performing the transmission determination. It can be said that there is.
  • the power receiving controller 35 includes a continuation determination unit 44 that continues or cancels the connection state based on the determination result of the transmission determination unit 43.
  • the continuation determination unit 44 continues the connection state when the transmission determination unit 43 determines that power transmission is performed between the one power transmission device 11 (for example, the first power transmission device 11a) and the power reception device 12 in the connection state. To do.
  • the continuation determination unit 44 uses the power reception communication unit 36 to transmit a continuation request signal for requesting continuation of the connection state to the first power transmission communication unit 24a.
  • the first power transmission controller 23a receives the continuation request signal by the first power transmission communication unit 24a
  • the first power transmission controller 23a determines to continue the current connection state, and uses the first power transmission communication unit 24a to receive a continuation response signal. It transmits to the part 36.
  • the continuation determination unit 44 determines to continue the connection state when the continuation response signal is received by the power receiving communication unit 36.
  • the state determined by the continuation determination unit 44 to continue the connection state is defined as the connection continuation state.
  • the continuation determination unit 44 of the first power transmission controller 23a and the power reception controller 35 determines to continue the connection state
  • the flag indicating the connection state is erased and a flag indicating the connection continuation state is stored in a predetermined storage area. Set. Thereby, the 1st power transmission controller 23a and the power receiving controller 35 can grasp
  • the power transmission device 11 and the power receiving device 12 can be in three states: a connection state, a connection continuation state, or an unconnected state that is neither a connection state nor a connection continuation state.
  • the power transmission controllers 23a and 23b and the power reception controller 35 are configured to be able to grasp which of the three states (the unconnected state, the connected state, and the connection continuation state) is the current state.
  • the continuation determining unit 44 cancels the connection state and the first power transmitting device 11a and the power receiving device.
  • the device 12 is set to an unconnected state.
  • the continuation determination unit 44 cancels the connection with the first power transmission device 11a and deletes the flag indicating the connection state.
  • the continuation determination part 44 transmits the cancellation
  • the release request signal is received by the first power transmission communication unit 24a, the first power transmission controller 23a cancels the connection state with the power receiving device 12 and erases the flag indicating the connection state.
  • the power transmission device 11 in the connection continuation state (for example, the first power transmission device 11a) until a predetermined termination condition is satisfied.
  • the power receiving device 12 are configured to perform power transmission.
  • the power reception controller 35 uses the power reception communication unit 36 to transmit a charge request signal for requesting charging power having a power value larger than the identification power as AC power to the first power transmission communication unit 24a.
  • the first power transmission controller 23a controls the first power supply unit 21a so that charging power is input to the first primary coil 22a when the charge request signal is received by the first power transmission communication unit 24a. . Thereby, the electric power for charging is transmitted from the first power transmission device 11a toward the power receiving device 12, and the vehicle battery 33 is charged.
  • the power receiving controller 35 periodically grasps the power value of the received power while the power transmission by the charging power is being performed, and uses the power receiving communication unit 36 to obtain information about the grasped result as the first power transmission communication unit 24a. Send to.
  • the first power transmission controller 23a controls the first power supply unit 21a so that the power value of the received power becomes a desired power value. That is, information is exchanged through the first power transmission communication unit 24 a and the power reception communication unit 36 during charging of the vehicle battery 33.
  • the power receiving controller 35 determines whether or not the termination condition is satisfied. If the termination condition is satisfied, the power reception controller 35 uses the power reception communication unit 36 to generate a charge termination request signal for requesting termination of charging. 1 Transmit to the power transmission communication unit 24a.
  • the 1st power transmission controller 23a controls the 1st power supply part 21a so that the output of the electric power for charge may be stopped, when the charge end request signal is received by the 1st power transmission communication part 24a.
  • the termination condition may be, for example, when the state of charge (SOC) of the vehicle battery 33 is in a fully charged state (charging termination trigger state) or when some trouble occurs in power transmission.
  • SOC state of charge
  • the termination condition may be, for example, when the state of charge (SOC) of the vehicle battery 33 is in a fully charged state (charging termination trigger state) or when some trouble occurs in power transmission.
  • the end condition is not limited to this, and for example, in the configuration in which the end switch is provided in each of the power transmission apparatuses 11a and 11b, a case where the end switch is operated as the end condition may be employed.
  • the power transmission controllers 23a and 23b may determine whether or not the end switch has been operated. That is, the end condition is arbitrary, and the execution subject for determining whether the end condition is satisfied may be the power receiving controller 35 or the power transmission controllers 23a and 23b.
  • the non-contact power transmission system 10 is one of the two or more power transmission devices 11 that has been grasped by the grasping unit 41 and whose connection state has been canceled. It is configured to determine whether or not a power transmission device 11 and a power reception device 12 different from (transmission-determined power transmission device 11) are a combination in which power transmission is performed.
  • connection state setting unit 42 when the connection state is canceled by the continuation determination unit 44, the connection state setting unit 42 is in an unconnected state different from the power transmission device 11 (for example, the first power transmission device 11a) whose connection state has been canceled.
  • the power transmission device 11 for example, the second power transmission device 11b
  • the power reception device 12 are set to a connected state.
  • the transmission determination part 43 determines whether electric power transmission is performed between the 2nd power transmission apparatus 11b and the power receiving apparatus 12 of the newly set connection state (1st power reception determination and 2nd power reception determination). I do.
  • the continuation determination unit 44 continues the connection state between the second power transmission device 11b and the power reception device 12 based on the determination result of the transmission determination unit 43 targeting the second power transmission device 11b and the power reception device 12. Determine. Since these specific configurations are the same as when the first power transmitting device 11a and the power receiving device 12 are in the connected state, detailed description thereof is omitted.
  • connection state setting unit 42 is configured to set a new connection state (connection request) based on the release of the connection state by the continuation determination unit 44. That is, the power receiving device 12 is restricted from being connected to a plurality of power transmitting devices 11 at the same time.
  • the grasping unit 41 grasps the power transmission device 11 based on the connection response signal.
  • the connection response signal is transmitted when the connection is not continued, and is not transmitted when the connection is continued.
  • grasping part 41 it has power transmission communication part which can perform wireless communication with power receiving communication part 36 among two or more power transmission apparatuses 11, and power transmission apparatus 11 other than a connection continuation state (unconnected state or Know what is connected).
  • the power transmission communication unit capable of wireless communication with the power reception communication unit 36 is present within a predetermined distance (distance that the power reception communication unit 36 can communicate) with the power reception communication unit 36. I can say that.
  • the connection state setting unit 42 sets the grasped power transmission device 11 and the power receiving device 12 in the connection state when the number of the power transmission devices 11 grasped by the grasping unit 41 is one.
  • the transmission determination part 43 determines whether electric power transmission is performed between the power transmission apparatus 11 and the power receiving apparatus 12 which became the said connection state. Then, when the determination result of the transmission determination unit 43 is affirmative, that is, when AC power is received by the secondary coil 31 in the second power reception determination, the continuation determination unit 44 continues the connection state and charges A power transmission process using utility power is executed.
  • FIGS. 3 and 6 to 8 modes of power values input to the primary coils 22 a and 22 b and the secondary coils 31 a and 31 b are shown, and communication modes are shown by arrows.
  • some arrows are appropriately shifted even at the same time.
  • the time point at which the power transmission request signal is transmitted and the time point at which the identification power is input are deviated, but are actually substantially the same.
  • FIGS. 6 to 8 also show the states of the power transmitting devices 11a and 11b and the power receiving devices 12a and 12b (unconnected state, connected state, connection continuation state). Specifically, the period in the connected state is indicated by a two-dot chain line arrow, and the period in the connection continued state is indicated by a one-dot chain line arrow. The period in which the one-dot chain line arrow and the two-dot chain line arrow are not described is an unconnected state.
  • a case is assumed where the first vehicle C1 is arranged in the first parking space S1.
  • the power transmission devices 11a and 11b are in an unconnected state when the first vehicle C1 is arranged in the first parking space S1.
  • the second vehicle C2 in which the power receiving device 12 (hereinafter referred to as the second power receiving device 12b) is mounted during power transmission to the power receiving device 12 (hereinafter referred to as the first power receiving device 12a) mounted in the first vehicle C1. It is assumed that it is arranged in the second parking space S2.
  • the secondary coil 31, the power receiving controller 35, and the power receiving communication unit 36 of the first power receiving device 12a are referred to as the first secondary coil 31a, the first power receiving controller 35a, and the first power receiving communication unit. 36a.
  • the secondary coil 31, the power reception controller 35, and the power reception communication unit 36 included in the second power reception device 12b are referred to as a second secondary coil 31b, a second power reception controller 35b, and a second power reception communication unit 36b.
  • the power transmission device 11 when the first vehicle C1 is arranged in the first parking space S1, first, at time t1, the power transmission device 11 by the grasping unit 41 of the first power reception device 12a (first power reception controller 35a). A grasp is made. Specifically, the search signal is transmitted by broadcast. In this case, since each of the power transmission devices 11a and 11b is not in the connection continuation state (is not connected), a search response signal is transmitted from each of the power transmission communication units 24a and 24b. Thereby, each power transmission apparatus 11a, 11b is grasped by grasping part 41.
  • the connection state setting unit 42 of the first power receiving device 12a selects the second power transmitting device 11b among the power transmitting devices 11a and 11b. Then, a connection request is made to the second power transmission device 11b. In this case, the second power transmission device 11b is not connected (is not connected), and therefore responds to the connection request. Thereby, the 1st power receiving apparatus 12a and the 2nd power transmission apparatus 11b will be in a connection state.
  • a power transmission request signal is transmitted from the first power receiving communication unit 36a toward the second power transmission communication unit 24b.
  • identification power is input to the second primary coil 22b over the first period T1.
  • the transmission determination unit 43 of the first power receiving device 12a determines whether or not AC power is received by the first secondary coil 31a during the first period T1 (first power reception determination). .
  • the first secondary even if the power for identification is input to the second primary coil 22b.
  • the coil 31a does not receive AC power or is negligibly small. For this reason, the determination result of the first power reception determination is a negative determination indicating that AC power is not received by the first secondary coil 31a. Then, at the time t4, the connection state between the first power receiving device 12a and the second power transmitting device 11b is released.
  • the connection state setting unit 42 of the first power receiving device 12a makes a connection request to the first power transmitting device 11a,
  • the 1st power receiving apparatus 12a and the 1st power transmission apparatus 11a will be in a connection state.
  • the power transmission request signal is transmitted from the first power receiving communication unit 36a toward the first power transmission communication unit 24a.
  • identification power is input to the first primary coil 22a over the first period T1.
  • the 1st power reception determination is performed by the transmission determination part 43 of the 1st power receiving apparatus 12a.
  • the second power reception determination is performed. Specifically, the power transmission request signal is transmitted again at time t7. As a result, the identification power is input again to the first primary coil 22a over the second period T2.
  • the first interval period Ti1 from the end of the first identification power input to the second identification power input start time is the first power transmission device 11a. It is determined based on the specific information 23aa.
  • the determination result of the second power reception determination is also a positive determination.
  • the determination result of the second power reception determination is affirmative, it is determined that the first power reception device 12a and the first power transmission device 11a are a combination in which power transmission is performed. In this case, at time t8, processing related to setting of the connection continuation state is performed, and the first power receiving device 12a and the first power transmission device 11a are in the connection continuation state.
  • full-scale power transmission is performed until the termination condition is satisfied. Specifically, at time t9, charging power is input to the first primary coil 22a (charging power is output from the first power supply unit 21a).
  • the first secondary coil 31 a receives AC power corresponding to the charging power, and the AC power is used for charging the vehicle battery 33.
  • the second vehicle C2 is placed in the second parking space S2.
  • ascertainment part 41 of the 2nd power receiving apparatus 12b (2nd power receiving controller 35b) is performed at the time t10.
  • the search signal is transmitted by broadcast from the second power receiving communication unit 36b.
  • the first power transmission device 11a is in a connection continuation state. For this reason, a search response signal is not transmitted from the 1st power transmission communication part 24a. On the other hand, since the 2nd power transmission apparatus 11b is an unconnected state, a search response signal is transmitted from the 2nd power transmission communication part 24b.
  • connection continuation state is excluded from the power transmission device 11 grasped by the grasping unit 41.
  • the grasping unit 41 grasps the unconnected state or the connected state. Thereafter, the connection state is set.
  • the input of charging power to the first primary coil 22a is stopped. After the input of charging power is stopped, the connected state may be released, or the connected state may be continued until the first vehicle C1 leaves (moves).
  • FIG.5 and FIG.6 a 2nd case is demonstrated using FIG.5 and FIG.6.
  • the two vehicles C1 and C2 enter the parking spaces S1 and S2 almost simultaneously, the first vehicle C1 is arranged in the first parking space S1, and the second parking is performed. It is assumed that the second vehicle C2 is arranged in the space S2. It is assumed that the power transmission apparatuses 11a and 11b are not connected before the vehicles C1 and C2 enter.
  • power transmission is performed between the first power transmission device 11a (first primary coil 22a) and the first power reception device 12a (first secondary coil 31a), and the second power transmission device 11b ( Power transmission is performed between the second primary coil 22b) and the second power receiving device 12b (second secondary coil 31b).
  • the grasping process by the grasping unit 41 of the first power receiving device 12a is performed, and the power transmitting devices 11a and 11b are grasped.
  • the grasping process by the grasping unit 41 of the second power receiving device 12b is performed, and the power transmitting devices 11a and 11b are grasped.
  • the first power receiving device 12a and the second power transmitting device 11b are connected. Then, at time t24, a power transmission request signal is transmitted from the first power reception communication unit 36a toward the second power transmission communication unit 24b. As a result, identification power is input to the second primary coil 22b.
  • the connection state setting unit 42 of the second power receiving device 12b makes a connection request to the second power transmitting device 11b.
  • the second power transmission device 11b rejects the connection request from the connection state setting unit 42 of the second power reception device 12b. For this reason, the 2nd power receiving apparatus 12b and the 2nd power transmission apparatus 11b are not in a connection state.
  • the connection state setting unit 42 of the second power receiving device 12b makes a connection request to the first power transmitting device 11a, and 2 The power receiving device 12b and the first power transmitting device 11a are connected.
  • the connection state setting unit 42 of the first power receiving device 12a makes a connection request to the first power transmitting device 11a.
  • the first power transmission device 11a is already connected to the second power reception device 12b, and therefore rejects the connection request.
  • a power transmission request signal is transmitted from the second power receiving communication unit 36b to the first power transmission communication unit 24a, and the first primary Identification power is input to the coil 22a.
  • AC power is not received by the second secondary coil 31b.
  • the determination result of the first power reception determination by the transmission determination unit 43 of the second power receiving device 12b is a negative determination. Therefore, the connection state between the second power receiving device 12b and the first power transmitting device 11a is released at time t30.
  • connection state setting unit 42 of the first power receiving device 12a A connection request is made again to the first power transmission device 11a.
  • the first power transmission device 11a since the first power transmission device 11a is not connected, the first power transmission device 11a responds to the connection request. Thereby, the 1st power receiving apparatus 12a and the 1st power transmission apparatus 11a will be in a connection state.
  • the second power receiving device 12b and the second power transmitting device 11b are connected.
  • a power transmission request signal is transmitted from the first power receiving communication unit 36a toward the first power transmission communication unit 24a, and the first primary Identification power is input to the coil 22a.
  • the first secondary coil 31a receives AC power corresponding to the identification power. For this reason, the determination result of the first power reception determination is an affirmative determination, and the second power reception determination is performed. Then, when the determination result of the second power reception determination is affirmative, the connection state is continued.
  • a power transmission request signal is transmitted from the second power receiving communication unit 36b to the second power transmission communication unit 24b at time t34, and the second primary Identification power is input to the coil 22b.
  • the second secondary coil 31b receives AC power corresponding to the identification power. For this reason, the determination result of the first power reception determination is an affirmative determination, and the second power reception determination is performed. Then, when the determination result of the second power reception determination is affirmative, the connection state is continued.
  • the connection from the second power reception device 12b is performed. Reject the request. That is, the second power transmission device 11b is restricted from being connected to the second power reception device 12b when the second power transmission device 11b is connected to the first power reception device 12a. Then, the rejected second power receiving device 12b is connected to the unconnected first power transmitting device 11a.
  • the connection state is released.
  • the first power receiving device 12a is connected to the first power transmitting device 11a different from the second power transmitting device 11b, and the second power receiving device 12b is connected to the second power transmitting device 11b different from the first power transmitting device 11a. Connected. And the determination of the transmission determination part 43 is performed. As a result, a series of processes from setting the connection state to continuation determination by the continuation determination unit 44 is executed while changing the target power transmission device that is in the connection state until the combination in which power transmission is performed is grasped.
  • the third case will be described with reference to FIG.
  • the two vehicles C1, C2 enter the parking spaces S1, S2 almost simultaneously, the first vehicle C1 is arranged in the first parking space S1, and the second parking is performed. It is assumed that the second vehicle C2 is arranged in the space S2.
  • the grasping process by the grasping unit 41 of the first power receiving device 12a is executed at the time t41, and the grasping process by the grasping unit 41 of the second power receiving device 12b is executed at the time t42.
  • the first power receiving device 12a and the second power transmitting device 11b are connected at time t43.
  • the 2nd power receiving apparatus 12b and the 1st power transmission apparatus 11a will be in a connection state at the time t44.
  • the power transmission request signal from the first power receiving communication unit 36a to the second power transmission communication unit 24b and the power transmission request signal from the second power receiving communication unit 36b to the first power transmission communication unit 24a are transmitted simultaneously.
  • identification power is simultaneously input to the primary coils 22a and 22b.
  • the secondary coils 31a and 31b simultaneously receive AC power corresponding to the identification power. Then, since the first power receiving device 12a misidentifies that AC power is received from the second power transmitting device 11b connected to the first power receiving device 12a, the determination result of the first power receiving determination is an affirmative determination. Become. Similarly, the determination result of the first power reception determination in the second power receiving device 12b is affirmative.
  • the second power reception determination is performed in each of the power receiving apparatuses 12a and 12b.
  • the first interval period Ti1 determined based on the specific information 23aa of the first power transmission device 11a is different from the second interval period Ti2 determined based on the specific information 23bb of the second power transmission device 11b. Therefore, the transmission time of the second power transmission request signal is different.
  • the second power receiving communication is performed at time t47 when the first interval period Ti1 has elapsed from time t46 when the first input of identification power is completed.
  • a power transmission request signal is transmitted from the unit 36b to the first power transmission communication unit 24a, and the second identification power is input to the first primary coil 22a.
  • the determination result of the second power reception determination is a negative determination. For this reason, the connection state of the 2nd power receiving apparatus 12b and the 1st power transmission apparatus 11a is cancelled
  • the first power receiving communication unit 36a is directed to the second power transmission communication unit 24b.
  • the second transmission request signal is transmitted, and the second identification power is input to the second primary coil 22b.
  • the determination result of the second power reception determination is a negative determination. For this reason, the connection state of the 1st power receiving apparatus 12a and the 2nd power transmission apparatus 11b is cancelled
  • the second time The input time of the identification power is shifted. That is, after the input of the identification power to the first primary coil 22a is completed, the identification power to the second primary coil 22b is started.
  • the second power reception determination that can occur when the time for which the identification power is input to the first primary coil 22a and the time for which the identification power is input to the second primary coil 22b partially overlap. Can be suppressed.
  • the grasping process by the grasping unit 41 of the second power receiving apparatus 12b is executed at a time point t61, and the grasping process by the grasping part 41 of the first power receiving apparatus 12a is executed at a time point t62.
  • the second power receiving device 12b and the second power transmitting device 11b are connected, and at time t64, the second power receiving communication unit.
  • a first power transmission request signal is transmitted from 36b to the second power transmission communication unit 24b.
  • the first identification power is input to the second primary coil 22b, and the second secondary coil 31b receives AC power corresponding to the identification power.
  • the input of the first identification power is stopped.
  • the first power receiving device 12a and the first power transmitting device 11a are connected, and at time t67, the first power receiving communication unit.
  • the first power transmission request signal is transmitted from 36a toward the first power transmission communication unit 24a.
  • the first identification power is input to the first primary coil 22a, and the first primary coil 22a receives AC power corresponding to the identification power.
  • the time t68 the first input of identification power is stopped.
  • the second power transmission request signal is transmitted from each of the power receiving communication units 36a and 36b. Is done. Accordingly, the second identification power is simultaneously input to the primary coils 22a and 22b, and the AC power corresponding to the identification power is received by each of the secondary coils 31a and 31b. In this case, the connection state is continued as it is, and the power transmission process using the charging power is performed. That is, even when the second identification power is input to the primary coils 22a and 22b at the same time, misidentification is unlikely to occur.
  • the power receiving controller 35 of the power receiving device 12 includes a grasping unit 41 that grasps two or more power transmitting devices 11. Then, when the grasping unit 41 grasps two or more power transmission devices 11 among the plurality of power transmission devices 11, the non-contact power transmission system 10 is not yet out of the two or more power transmission devices 11 grasped by the grasping unit 41.
  • a connection state setting unit is provided for setting the connected power transmission device 11 and the unconnected power reception device 12 to a connection state in which a connection via the power transmission communication unit and the power reception communication unit is established.
  • the non-contact power transmission system 10 includes a transmission determination unit 43 that determines whether or not power transmission is performed between the power transmission device 11 and the power reception device 12 that are in a connected state. Further, the contactless power transmission system 10 continues the connection state when the determination result by the transmission determination unit 43 is affirmative, that is, when power transmission is performed, and the determination result of the transmission determination unit 43 is negative. In some cases, that is, when power transmission is not performed, a continuation determination unit 44 for releasing the connection state is provided.
  • the determination by the transmission determination unit 43 is performed after one of the two or more power transmission apparatuses 11 is connected to the power transmission apparatus 11 and the power reception apparatus 12. And when it determines with electric power transmission being performed by the transmission determination part 43, a connection state is continued. As a result, power can be transmitted between the power transmission device 11 and the power reception device 12 that are in the connection continuation state while exchanging information as they are.
  • the targets set by the connection state setting unit 42 to the connected state are the unconnected power transmission device 11 and the unconnected power reception device 12.
  • the power transmission device 11 and the power receiving device 12 that are in the connected state are restricted from being connected to other devices until the connection state is released. Therefore, for example, it is possible to suppress a situation in which a combination in which power transmission is performed cannot be grasped due to the power receiving device 12 being connected to two or more power transmitting devices 11 at the same time.
  • the power reception device 12 is connected to two or more power transmission devices 11 and is connected to the power transmission request signal simultaneously from one power reception device 12 to two or more power transmission devices 11, two or more 1 AC power is input to the next coil at the same time.
  • the input pattern for example, input time
  • control is facilitated. Can be planned.
  • the grasping unit 41 has a power transmission communication unit (for example, the first power transmission communication unit 24a) capable of wireless communication with the power reception communication unit 36 among the two or more power transmission devices 11, and other than the connection continuation state
  • the power transmission device 11, that is, the power transmission device 11 in an unconnected state or a connected state is grasped.
  • the number of grasped power transmission devices 11 can be reduced. Therefore, it is possible to reduce the number of determinations by the connection state setting and transmission determination unit 43, and it is possible to shorten the time required to grasp the combination in which power transmission is performed.
  • the power transmission device 11 in the connection continuation state has already been determined to be a combination in which power transmission is performed with another power reception device 12 based on the determination by the transmission determination unit 43, and thus the current power reception device 12 and power transmission this time. Cannot be combined. Therefore, even if it excludes from a grasp object, there is no trouble.
  • connection state of the power transmission device 11 in the connected state can be released depending on the determination result of the transmission determination unit 43.
  • the power transmission apparatus 11 of the said connection state can be a combination with this power receiving apparatus 12 and electric power transmission. Therefore, the combination in which electric power transmission is performed can be suitably grasped
  • the grasping unit 41 controls the power receiving communication unit 36 to transmit a search signal as a response request signal.
  • the power transmission controllers 23a and 23b serving as power transmission control units receive a search response signal when a search signal is received by the power transmission communication units 24a and 24b in a state that is not in a connection continuation state, that is, in a state that is not connected or connected.
  • the power transmission communication units 24 a and 24 b are controlled to transmit to the power reception communication unit 36.
  • the search signal is received by the power transmission communication units 24a and 24b in the situation where the power transmission controllers 23a and 23b are in the connection continuation state, the power transmission communication units 24a and 24b do not transmit the search response signal. To control. Thereby, the power transmission apparatus 11 in the connection continuation state is excluded from the objects grasped by the grasping unit 41. Therefore, the effect (2) can be obtained relatively easily.
  • connection state setting unit 42 is in an unconnected state different from the power transmission device 11 (for example, the first power transmission device 11a) whose connection state has been canceled.
  • the power transmission device 11 for example, the second power transmission device 11b
  • the unconnected power receiving device 12 are set to the connected state.
  • the determination by the transmission determination unit 43 and the determination by the continuation determination unit 44 for the power transmission device 11 and the power reception device 12 newly set in the connection state are performed. Thereby, since the determination by the transmission determination unit 43 and the continuation determination unit 44 is sequentially performed until the combination in which power transmission is performed is determined, the combination in which power transmission is performed can be appropriately determined.
  • the transmission determination unit 43 receives the identification power during the first period T1 for the primary coil (for example, the first primary coil 22a) of the connected power transmission device 11 (for example, the first power transmission device 11a).
  • the connected power transmission apparatus 11 is controlled so as to be input over the entire network.
  • the transmission determination part 43 performs the 1st power reception determination which determines whether alternating current power is received by the secondary coil 31, when the electric power for identification is input into the primary coil. Then, when the determination result of the first power reception determination is an affirmative determination, the transmission determination unit 43 again supplies the identification power to the primary coil of the connected power transmission device 11 over the second period T2.
  • the connected power transmission device 11 is controlled so as to be input, and a second power reception determination is performed to determine whether or not AC power is received by the secondary coil 31. Thereby, even if the determination result of the first power reception determination is erroneously affirmed due to erroneous detection of the detection unit 34, the determination result of the second power reception determination can be a negative determination. Therefore, the determination accuracy of the transmission determination unit 43 can be improved.
  • the interval periods Ti1 and Ti2 are made different from each other in the first period T1. Is adopted. Thereby, in order to make 1st period T1 different, it can suppress that 1st period T1 becomes long. Therefore, it is possible to suppress an increase in time required for the first power reception determination and an increase in useless power consumption.
  • interval periods Ti1 and Ti2 are determined based on the specific information 23aa and 23bb of the power transmission apparatuses 11a and 11b set to the connected state. Thereby, interval period Ti1, Ti2 can be easily varied for every power transmission apparatus 11a, 11b.
  • the second power reception determination it is not necessary to consider the time when the received power is detected, and it is only necessary to determine whether or not the power reception is detected. Therefore, the second power reception determination can be easily performed.
  • the non-contact power transmission system 10 performs the primary of the power transmission device 11 in the connection continuation state until a predetermined termination condition is satisfied.
  • the coil for example, the first primary coil 22a
  • the coil is configured to receive transmission power (charging power) having a power value larger than that of the identification power.
  • connection state setting unit 42 sequentially requests connection to two or more power transmission devices 11 grasped by the grasping unit 41 until an unconnected power transmission device 11 is found, that is, until a connection response signal is received. I do. Accordingly, the connection state can be set without waiting for the connection state of the power transmission device 11 in the connection state to be released, and the determination by the transmission determination unit 43 can be performed. Thereby, the combination by which electric power transmission is performed can be grasped
  • the power transmission controllers 23a and 23b are configured to control the power transmission communication units 24a and 24b so that a beacon is periodically transmitted in a situation where the connection is not continued and a beacon is not periodically transmitted in a situation where the connection is continued. May be.
  • the grasping unit 41 of the power receiving controller 35 may be configured to grasp the power transmission device 11 based on the reception of the beacon by the power receiving communication unit 36. Thereby, the grasping unit 41 can grasp the power transmission device 11 without transmitting a search signal.
  • connection state setting unit 42 may be configured to make a connection request preferentially from the one with the high reception strength of the search response signal when there are two or more unconnected power transmission apparatuses 11. As a result, connection requests can be made in order from the power transmitting device 11 that is present nearby to the power receiving device 12.
  • the power transmission device 11 makes a connection request from a power receiving device 12 different from the power receiving device 12 related to the connection continuation state after shifting from the connection state to the connection continuation state, the power transmission device 11 rejects the connection and the connection continuation state You may notify that it became.
  • the power transmitting apparatus 11 that has performed the notification may be excluded from the targets for which the connection request is made. Thereby, useless connection requests can be avoided.
  • the power transmission controllers 23a and 23b may include a connection state setting unit 42, a transmission determination unit 43, and a continuation determination unit 44.
  • the power receiving controller 35 may transmit information necessary for various determinations (for example, detection results of the detecting unit 34) to the power transmitting controllers 23a and 23b using the power receiving communication unit 36. If attention is paid to the setting of the connection state and various determinations by exchanging various request signals and various response signals in response to the various request signals, the power transmission controllers 23a and 23b and the power reception controller 35 cooperate with each other. It can be said that a connection state setting unit 42, a transmission determination unit 43, and a continuation determination unit 44 are provided.
  • the power value of the first identification power (first identification power) and the second identification power (second identification power) may be the same or different. Good.
  • the power value of the identification power is smaller than the power value of the charging power, but is not limited thereto, and may be the same.
  • the first period T1 and the second period T2 may be the same or different.
  • the difference between the first interval period Ti1 and the second interval period Ti2 may be less than the second period T2. Even in this case, the input start time of the second identification power is different. Therefore, it is preferable to determine whether or not the combination is correct by comparing the input start time of the second identification power with the detection start timing of the received power.
  • the interval periods Ti1 and Ti2 may be determined based on the specific information of the power reception devices 12a and 12b.
  • the detection unit 34 detects the AC power received by the secondary coil 31, but is not limited thereto, and may be configured to detect the DC power converted from the AC power.
  • the first identification power is configured to stop when it is input for the first period T1.
  • the present invention is not limited to this. Until a stop request signal is received from the power receiving communication unit 36 The input of the identification power may be continued.
  • the power reception controller 35 may control the power reception communication unit 36 so that the stop request signal is transmitted when AC power is not received for a predetermined period after the transmission request signal is transmitted.
  • the interval period may be the same regardless of each power transmission device 11, and the first period T1 may be different for each power transmission device 11. Even in this case, even when the first identification power input start time is the same, the second identification power input start time is different, so that erroneous determination of the transmission determination unit 43 can be suppressed. In short, the period from the input start time of the first identification power to the input start time of the second identification power may be different for each power transmission device 11.
  • the difference between the first period T1 corresponding to the first power transmission device 11a and the first period T1 corresponding to the second power transmission device 11b may be set longer than the second period T2.
  • the resonance frequency of the resonance circuit including the first primary coil 22a (or the resonance circuit including the second primary coil 22b) and the resonance frequency of the resonance circuit including the secondary coil 31 can transmit power. It may be different within the range.
  • Primary and secondary capacitors may be omitted.
  • magnetic field resonance may be performed using parasitic capacitances of the primary coils 22 a and 22 b and the secondary coil 31.
  • the AC power received by the secondary coil 31 may be used for purposes other than charging the vehicle battery 33.
  • the power receiving device 12 can be mounted on any object, and may be mounted on, for example, a robot or an electric wheelchair.
  • O The number of power transmission devices 11 is not limited to two and is arbitrary.
  • the first power transmission device 11a may have a configuration including a resonance circuit including the first primary coil 22a and a primary capacitor, and a primary coupling coil coupled to the resonance circuit by electromagnetic induction.
  • the power receiving device 12 may have a configuration including a resonance circuit including the secondary coil 31 and a secondary capacitor, and a secondary coupling coil coupled to the resonance circuit by electromagnetic induction.
  • the grasping unit 41 is configured to grasp the unconnected or connected power transmission device 11, but is not limited thereto, and may be configured to grasp only the unconnected power transmission device 11.
  • the power transmission controllers 23a and 23b transmit power transmission communication so as to transmit a search response signal to the power receiving communication unit 36 when a search signal is received by the power transmission communication units 24a and 24b in a state of being unconnected.
  • the units 24a and 24b are controlled.
  • the power transmission controllers 23a and 23b are configured so as not to transmit the search response signal when the search signal is received by the power transmission communication units 24a and 24b in the connection state or the connection continuation state. You may control 24a, 24b. Thereby, only the unconnected power transmission device 11 is grasped by the grasping unit 41.
  • the grasping unit 41 has a power transmission communication unit that can wirelessly communicate with the power receiving communication unit 36 among the two or more power transmission devices 11 grasped by the grasping unit 41, and at least the connection continuation state is excluded. It is good to know what is connected. In other words, it is sufficient that at least the connection continuation state is excluded from the grasping targets of the grasping unit 41.
  • the power transmission controllers 23a and 23b receive search response signals from the power transmission communication units 24a and 24b when a search signal is received by the power transmission communication units 24a and 24b in a state of at least an unconnected state other than the connection continuation state.
  • the power transmission communication units 24a and 24b may be controlled so as to be transmitted to the power reception communication unit 36.
  • the second power reception determination may be omitted.
  • the transmission determination unit 43 controls the connected power transmission device 11 so that the identification power is input to the primary coil of the connected power transmission device 11, and the identification power is input to the primary coil. If the AC power is received by the secondary coil 31, the power reception determination may be performed. In this case, the transmission determination unit 43 determines that power transmission is performed when AC power is received by the secondary coil 31, and when AC power is not received by the secondary coil 31, It may be determined that power transmission is not performed. According to this configuration, the time required for determination by the transmission determination unit 43 can be shortened.

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

Abstract

In the present invention, a contactless electric power transmission system is provided with a plurality of power transmission devices and a power receiving device. The power transmission devices each have a primary coil (1) into which AC power is inputted, and a power transmission communication unit that performs wireless communication. The power receiving device has: a secondary coil capable of receiving, without contact, the AC power inputted into the primary coil; a power receiving communication unit that performs wireless communication; and a detection part that detects the power transmission devices. The detection part detects a power transmission device, from the plurality of such devices, that is in a non-connected state and that has a power transmission communication unit capable of wireless communication with the power receiving communication unit.

Description

非接触電力伝送システム及び受電装置Non-contact power transmission system and power receiving device
　本発明は、非接触電力伝送システム及び受電装置に関する。 The present invention relates to a non-contact power transmission system and a power receiving device.
　電源コード及び送電ケーブルを用いない非接触電力伝送システムが知られている。非接触電力伝送システムは、例えば、交流電力が入力される１次コイルを有する送電装置と、１次コイルから非接触で交流電力を受電可能な２次コイルを有する受電装置とを備えている。例えば特許文献１参照。かかる非接触電力伝送システムにおいては、例えば１次コイルと２次コイルとが磁場共鳴することにより、送電装置から受電装置に非接触で交流電力が伝送される。受電装置によって受電された交流電力は、例えば当該受電装置が搭載された車両の車両用バッテリの充電に用いられる。 A non-contact power transmission system that does not use a power cord or power transmission cable is known. The non-contact power transmission system includes, for example, a power transmission device having a primary coil to which AC power is input and a power reception device having a secondary coil that can receive AC power from the primary coil in a non-contact manner. For example, see Patent Document 1. In such a non-contact power transmission system, for example, AC power is transmitted from a power transmission device to a power reception device in a non-contact manner by causing magnetic resonance between a primary coil and a secondary coil. The AC power received by the power receiving device is used, for example, for charging a vehicle battery of a vehicle on which the power receiving device is mounted.
特開２００９－１０６１３６号公報JP 2009-106136 A
　公共施設の駐車場等、複数の車両が駐車され得る場所においては、複数の送電装置が設けられる場合がある。この場合、複数の送電装置のうちいずれの送電装置と受電装置との間で電力伝送が行われるかを把握する必要が生じる。 In places where a plurality of vehicles can be parked, such as parking lots in public facilities, a plurality of power transmission devices may be provided. In this case, it is necessary to grasp which power transmission device and the power receiving device among the plurality of power transmission devices perform power transmission.
　本発明の目的は、複数の送電装置のうち電力伝送が行われる送電装置と受電装置との組み合わせを好適に把握できる非接触電力伝送システム及び受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 power transmission system and a power receiving apparatus that can appropriately grasp a combination of a power transmitting apparatus and a power receiving apparatus that perform power transmission among a plurality of power transmitting apparatuses.
　上記目的を達成する非接触電力伝送システムは、交流電力が入力される１次コイル、及び、無線通信を行う送電通信部をそれぞれ有する複数の送電装置と、前記１次コイルに入力される前記交流電力を非接触で受電可能な２次コイル、無線通信を行う受電通信部、及び前記送電装置を把握する把握部を有する受電装置と、前記把握部が前記複数の送電装置のうち二以上の送電装置を把握した場合には、前記把握部によって把握された前記二以上の送電装置のうち１の送電装置と前記受電装置とを、前記送電通信部及び前記受電通信部を介する接続が確立された接続状態に設定する接続状態設定部と、前記接続状態となった前記送電装置及び前記受電装置間で電力伝送が行われるか否かを判定する伝送判定部と、前記伝送判定部により前記電力伝送が行われると判定された場合には前記接続状態を継続し、前記伝送判定部により前記電力伝送が行われないと判定された場合には前記接続状態を解除する継続判定部と、を備え、前記継続判定部によって前記接続状態を継続することが判定された状態を接続継続状態と定義し、前記接続状態でなく、且つ、前記接続継続状態でない状態を未接続状態と定義すると、前記接続状態設定部は、前記１の送電装置として前記未接続状態の送電装置と、前記受電装置とを、前記接続状態に設定するように構成され、前記把握部は、前記二以上の送電装置のうち、前記受電通信部と無線通信が可能な前記送電通信部を有し、且つ、前記接続継続状態を除く少なくとも前記未接続状態の送電装置を把握する。 The contactless power transmission system that achieves the above object includes a primary coil to which AC power is input, a plurality of power transmission devices each having a power transmission communication unit that performs wireless communication, and the AC that is input to the primary coil. A secondary coil that can receive power in a contactless manner, a power receiving communication unit that performs wireless communication, and a power receiving device that includes a grasping unit that grasps the power transmitting device, and the grasping unit transmits two or more of the plurality of power transmitting devices. When the device is grasped, a connection is established between one power transmission device and the power reception device among the two or more power transmission devices grasped by the grasping unit via the power transmission communication unit and the power reception communication unit. A connection state setting unit that sets the connection state; a transmission determination unit that determines whether or not power transmission is performed between the power transmission device and the power reception device that are in the connection state; and A continuation determination unit that continues the connection state when it is determined that transmission is performed, and that cancels the connection state when the transmission determination unit determines that the power transmission is not performed. When the state determined to continue the connection state by the continuation determination unit is defined as a connection continuation state, and a state that is not the connection state and is not the connection continuation state is defined as an unconnected state, the connection The state setting unit is configured to set the unconnected power transmission device and the power receiving device as the one power transmission device to the connected state, and the grasping unit is configured to include the two or more power transmission devices. And having the power transmission communication unit capable of wireless communication with the power receiving communication unit, and grasping at least the unconnected power transmission device excluding the connection continuation state.
　上記目的を達成する受電装置は、交流電力が入力される１次コイル、及び、無線通信を行う送電通信部を有する送電装置から非接触で交流電力を受電可能なものであって、前記１次コイルに入力される前記交流電力を受電可能な２次コイルと、無線通信を行う受電通信部と、前記送電装置を把握する把握部と、前記把握部が前記複数の送電装置のうち二以上の送電装置を把握した場合には、前記把握部によって把握された前記二以上の送電装置のうち１の送電装置と前記受電装置とを、前記送電通信部及び前記受電通信部を介する接続が確立された接続状態に設定する接続状態設定部と、前記接続状態となった前記送電装置及び前記受電装置間で電力伝送が行われるか否かを判定する伝送判定部と、前記伝送判定部により前記電力伝送が行われると判定された場合には前記接続状態を継続する一方、前記伝送判定部により前記電力伝送が行われないと判定された場合には前記接続状態を解除する継続判定部と、を備え、前記継続判定部によって前記接続状態を継続することが判定された状態を接続継続状態と定義し、前記接続状態でなく、且つ、前記接続継続状態でない状態を未接続状態と定義すると、前記接続状態設定部は、前記受電装置と、前記１の送電装置としての前記未接続状態の送電装置とを、前記接続状態に設定するものであり、前記把握部は、前記二以上の送電装置のうち、前記受電通信部と無線通信が可能な前記送電通信部を有し、且つ、前記接続継続状態を除く少なくとも前記未接続状態の送電装置を把握する。 A power receiving device that achieves the above object is capable of receiving AC power in a contactless manner from a power transmission device having a primary coil to which AC power is input and a power transmission communication unit that performs wireless communication. A secondary coil capable of receiving the AC power input to the coil; a power receiving communication unit that performs wireless communication; a grasping unit that grasps the power transmission device; and the grasping unit includes two or more of the plurality of power transmission devices. When the power transmission device is grasped, a connection is established between one power transmission device and the power reception device among the two or more power transmission devices grasped by the grasping unit via the power transmission communication unit and the power reception communication unit. A connection state setting unit that sets the connection state, a transmission determination unit that determines whether power transmission is performed between the power transmission device and the power reception device that are in the connection state, and the transmission determination unit that determines the power Transmission line The connection state is continued when it is determined to be, while the transmission determination unit determines that the power transmission is not performed, the continuation determination unit to release the connection state, When the state determined to continue the connection state by the continuation determination unit is defined as a connection continuation state, and the state that is not the connection state and is not the connection continuation state is defined as an unconnected state, the connection state setting The unit sets the power receiving device and the unconnected power transmission device as the first power transmission device to the connected state, and the grasping unit includes the two or more power transmission devices, It has the power transmission communication unit capable of wireless communication with the power reception communication unit, and grasps at least the unconnected power transmission device excluding the connection continuation state.
非接触電力伝送システムの概要を示す斜視図。The perspective view which shows the outline | summary of a non-contact electric power transmission system. 図１の非接触電力伝送システムの電気的構成を示すブロック図。The block diagram which shows the electric constitution of the non-contact electric power transmission system of FIG. 第１のケースを示すタイミングチャートであり、（ａ）は第１受電装置の受電態様を示し、（ｂ）は第１送電装置の送電態様を示し、（ｃ）は第２送電装置の送電態様を示し、（ｄ）は第２受電装置の受電態様を示す。It is a timing chart which shows a 1st case, (a) shows the power reception aspect of a 1st power receiving apparatus, (b) shows the power transmission aspect of a 1st power transmission apparatus, (c) is the power transmission aspect of a 2nd power transmission apparatus. (D) shows the power receiving mode of the second power receiving apparatus. 第１のケースを示す模式図。The schematic diagram which shows a 1st case. 第２のケースを示す模式図。The schematic diagram which shows a 2nd case. 第２のケースを示すタイミングチャートであり、（ａ）は第１受電装置の受電態様を示し、（ｂ）は第２受電装置の受電態様を示し、（ｃ）は第１送電装置の送電態様を示し、（ｄ）は第２送電装置の送電態様を示す。It is a timing chart which shows a 2nd case, (a) shows the power reception aspect of a 1st power receiving apparatus, (b) shows the power reception aspect of a 2nd power receiving apparatus, (c) is the power transmission aspect of a 1st power transmission apparatus. (D) shows the power transmission mode of the second power transmission device. 第３のケースを示すタイミングチャートであり、（ａ）は第１受電装置の受電態様を示し、（ｂ）は第２受電装置の受電態様を示し、（ｃ）は第１送電装置の送電態様を示し、（ｄ）は第２送電装置の送電態様を示す。It is a timing chart which shows a 3rd case, (a) shows the power reception aspect of a 1st power receiving apparatus, (b) shows the power reception aspect of a 2nd power receiving apparatus, (c) is the power transmission aspect of a 1st power transmission apparatus. (D) shows the power transmission mode of the second power transmission device. 第４のケースを示すタイミングチャートであり、（ａ）は第１受電装置の受電態様を示し、（ｂ）は第２受電装置の受電態様を示し、（ｃ）は第１送電装置の送電態様を示し、（ｄ）は第２送電装置の送電態様を示す。It is a timing chart which shows a 4th case, (a) shows the power reception aspect of a 1st power receiving apparatus, (b) shows the power reception aspect of a 2nd power receiving apparatus, (c) is the power transmission aspect of a 1st power transmission apparatus. (D) shows the power transmission mode of the second power transmission device.
　以下、非接触電力伝送システムを車両に適用した一実施形態について説明する。
　図１に示すように、非接触電力伝送システム１０は、非接触で電力伝送が可能な複数の送電装置１１（充電スタンド）及び受電装置１２（車両側装置）を備えている。受電装置１２は、車両Ｃに搭載されている。 Hereinafter, an embodiment in which the non-contact power transmission system is applied to a vehicle will be described.
As shown in FIG. 1, the non-contact power transmission system 10 includes a plurality of power transmission devices 11 (charging stations) and power reception devices 12 (vehicle side devices) that can transmit power in a non-contact manner. The power receiving device 12 is mounted on the vehicle C.
　複数の送電装置１１は、車両Ｃが駐車可能な複数の駐車スペースＳ１，Ｓ２に対応させてそれぞれ設置されている。この場合、説明の便宜上、第１駐車スペースＳ１付近に設置されている送電装置１１を第１送電装置１１ａといい、第２駐車スペースＳ２付近に設置されている送電装置１１を第２送電装置１１ｂという。送電装置１１ａ，１１ｂは同一の構成を有する。 The plurality of power transmission devices 11 are respectively installed corresponding to the plurality of parking spaces S1 and S2 in which the vehicle C can be parked. In this case, for convenience of explanation, the power transmission device 11 installed in the vicinity of the first parking space S1 is referred to as a first power transmission device 11a, and the power transmission device 11 installed in the vicinity of the second parking space S2 is referred to as a second power transmission device 11b. That's it. The power transmission devices 11a and 11b have the same configuration.
　図２に示すように、第１送電装置１１ａは、予め定められた周波数の交流電力を出力可能な第１電源部２１ａを備えている。第１電源部２１ａは、インフラストラクチャとしての系統電源Ｅから入力される系統電力を交流電力に変換し、変換された交流電力を出力する。そして、第１送電装置１１ａは、第１電源部２１ａから出力される交流電力が入力される第１の１次コイル（送電部）２２ａを備えている。 As shown in FIG. 2, the first power transmission device 11 a includes a first power supply unit 21 a that can output AC power having a predetermined frequency. The 1st power supply part 21a converts the system electric power input from the system power supply E as an infrastructure into alternating current power, and outputs the converted alternating current power. And the 1st power transmission apparatus 11a is provided with the 1st primary coil (power transmission part) 22a into which the alternating current power output from the 1st power supply part 21a is input.
　第１送電装置１１ａは、当該第１送電装置１１ａの各種制御を行う送電制御部としての第１送電コントローラ２３ａと、無線通信を行う第１送電通信部２４ａとを備えている。第１送電コントローラ２３ａは、第１送電通信部２４ａから信号が入力されるものであって、第１送電通信部２４ａから所定の信号が送信されるよう第１送電通信部２４ａを制御する。 The first power transmission device 11a includes a first power transmission controller 23a as a power transmission control unit that performs various controls of the first power transmission device 11a, and a first power transmission communication unit 24a that performs wireless communication. The first power transmission controller 23a receives a signal from the first power transmission communication unit 24a, and controls the first power transmission communication unit 24a so that a predetermined signal is transmitted from the first power transmission communication unit 24a.
　第２送電装置１１ｂは、第１送電装置１１ａと同様に、第２電源部２１ｂ、第２の１次コイル２２ｂ、第２送電コントローラ２３ｂ及び第２送電通信部２４ｂを備えている。これらの構成は、第１送電装置１１ａの各構成と同一であるため、説明を省略する。 The 2nd power transmission apparatus 11b is provided with the 2nd power supply part 21b, the 2nd primary coil 22b, the 2nd power transmission controller 23b, and the 2nd power transmission communication part 24b similarly to the 1st power transmission apparatus 11a. Since these structures are the same as each structure of the 1st power transmission apparatus 11a, description is abbreviate | omitted.
　図１に示すように、１次コイル２２ａ，２２ｂは、駐車スペースＳ１，Ｓ２にそれぞれ配置されている。詳細には、第１の１次コイル２２ａは第１駐車スペースＳ１に配置されており、第２の１次コイル２２ｂは第２駐車スペースＳ２に配置されている。 As shown in FIG. 1, the primary coils 22a and 22b are disposed in the parking spaces S1 and S2, respectively. Specifically, the first primary coil 22a is disposed in the first parking space S1, and the second primary coil 22b is disposed in the second parking space S2.
　受電装置１２は、１次コイル２２ａ，２２ｂのいずれかから非接触で交流電力を受電可能な２次コイル（受電部）３１を備えている。各１次コイル２２ａ，２２ｂと２次コイル３１とは磁場共鳴可能に構成されている。例えば、各１次コイル２２ａ，２２ｂには、直列又は並列に１次コンデンサ（図示略）が接続されており、共振回路が形成されている。同様に、２次コイル３１には、直列又は並列に２次コンデンサ（図示略）が接続されており、共振回路が形成されている。そして、第１の１次コイル２２ａを含む共振回路、第２の１次コイル２２ｂを含む共振回路、及び２次コイル３１を含む共振回路の共振周波数は同一に設定されている。 The power receiving device 12 includes a secondary coil (power receiving unit) 31 capable of receiving AC power in a non-contact manner from either of the primary coils 22a and 22b. The primary coils 22a and 22b and the secondary coil 31 are configured to be capable of magnetic field resonance. For example, a primary capacitor (not shown) is connected to each primary coil 22a, 22b in series or in parallel to form a resonance circuit. Similarly, a secondary capacitor (not shown) is connected to the secondary coil 31 in series or in parallel to form a resonance circuit. The resonance frequencies of the resonance circuit including the first primary coil 22a, the resonance circuit including the second primary coil 22b, and the resonance circuit including the secondary coil 31 are set to be the same.
　かかる構成において、２次コイル３１が、１次コイル２２ａ，２２ｂのいずれかと磁場共鳴可能な位置に配置されているとする。この状況において、当該磁場共鳴可能な１次コイルに交流電力が入力された場合、当該１次コイルを含む共振回路と、２次コイル３１を含む共振回路とが磁場共鳴する。これにより、２次コイル３１は、非接触で上記１次コイルから交流電力を受電する。なお、各電源部２１ａ，２１ｂから出力される交流電力の周波数は、上記各共振回路の共振周波数と同一又はそれに近づくように設定されているとよい。 In such a configuration, it is assumed that the secondary coil 31 is disposed at a position where it can magnetically resonate with either of the primary coils 22a and 22b. In this situation, when AC power is input to the primary coil capable of magnetic field resonance, the resonance circuit including the primary coil and the resonance circuit including the secondary coil 31 perform magnetic field resonance. Thereby, the secondary coil 31 receives AC power from the primary coil in a non-contact manner. The frequency of the AC power output from each of the power supply units 21a and 21b may be set to be the same as or close to the resonance frequency of each of the resonance circuits.
　図１に示すように、２次コイル３１は、１次コイル２２ａ，２２ｂのいずれかと対向可能な位置、詳細には車両Ｃの底部に配置されている。車両Ｃが駐車スペースＳ１，Ｓ２のいずれかに駐車された場合には、２次コイル３１は、駐車された駐車スペースに設置されている１次コイルと対向して、当該１次コイルと磁場共鳴可能な位置に配置される。 As shown in FIG. 1, the secondary coil 31 is disposed at a position that can face either of the primary coils 22 a and 22 b, specifically, at the bottom of the vehicle C. When the vehicle C is parked in either of the parking spaces S1 and S2, the secondary coil 31 faces the primary coil installed in the parked parking space, and magnetic resonance with the primary coil. Arranged at possible positions.
　図２に示すように、受電装置１２は、２次コイル３１によって受電された交流電力を整流する整流器３２と、整流器３２によって整流された直流電力が入力される車両用バッテリ３３とを備えている。これにより、車両用バッテリ３３が充電される。 As shown in FIG. 2, the power receiving device 12 includes a rectifier 32 that rectifies the AC power received by the secondary coil 31 and a vehicle battery 33 to which the DC power rectified by the rectifier 32 is input. . Thereby, the vehicle battery 33 is charged.
　また、受電装置１２は、２次コイル３１によって受電された交流電力（以降単に受電電力という）を検知する検知部３４を備えている。検知部３４は、その検知結果を、受電装置１２に設けられた受電制御部としての受電コントローラ３５に送信する。これにより、受電コントローラ３５は、受電電力を把握できる。つまり、受電コントローラ３５は、検知部３４の検知結果に基づいて、受電電力の電力値、受電電力が検知された時間等の受電電力のパターンを把握するものである。 Further, the power receiving device 12 includes a detection unit 34 that detects AC power received by the secondary coil 31 (hereinafter simply referred to as “received power”). The detection unit 34 transmits the detection result to a power reception controller 35 as a power reception control unit provided in the power reception device 12. Thereby, the power receiving controller 35 can grasp the received power. That is, the power reception controller 35 grasps the pattern of the received power such as the power value of the received power and the time when the received power is detected based on the detection result of the detection unit 34.
　また、受電装置１２は、車両用バッテリ３３の充電状態（ＳＯＣ：Ｓｔａｔｅ　ｏｆ　Ｃｈａｒｇｅ）を検出し、その検出結果を受電コントローラ３５に送信するＳＯＣセンサ（図示略）を備えている。これにより、受電コントローラ３５は、車両用バッテリ３３の充電状態を把握できる。 The power receiving device 12 includes an SOC sensor (not shown) that detects the state of charge (SOC: State of Charge) of the vehicle battery 33 and transmits the detection result to the power receiving controller 35. Thereby, the power receiving controller 35 can grasp the state of charge of the vehicle battery 33.
　受電装置１２は、無線通信を行うものであって、各送電通信部２４ａ，２４ｂと信号のやり取りが可能な受電通信部３６を備えている。受電コントローラ３５は、受電通信部３６から信号が入力されるものであって、所定の信号が送信されるよう受電通信部３６を制御する。 The power receiving device 12 performs wireless communication, and includes a power receiving communication unit 36 that can exchange signals with the power transmission communication units 24a and 24b. The power reception controller 35 receives a signal from the power reception communication unit 36 and controls the power reception communication unit 36 so that a predetermined signal is transmitted.
　なお、各送電通信部２４ａ，２４ｂ及び受電通信部３６の無線通信可能範囲は、第１駐車スペースＳ１及び第２駐車スペースＳ２よりも広く設定されている。このため、複数の送電装置１１が設置されている本実施形態では、複数の送電装置１１が受電通信部３６の無線通信可能範囲に含まれる。つまり、受電通信部３６は、複数の送電装置１１の送電通信部（第１送電通信部２４ａ及び第２送電通信部２４ｂ）と無線通信可能となる。なお、各通信部２４ａ，２４ｂ，３６の通信方式としては、例えばＢｌｕｅｔｏｏｔｈ（登録商標）、Ｚｉｇｂｅｅ（登録商標）及びＷｉ－ｆｉ等の無線通信方式が考えられる。 In addition, the radio | wireless communicable range of each power transmission communication part 24a, 24b and the power receiving communication part 36 is set more widely than 1st parking space S1 and 2nd parking space S2. For this reason, in the present embodiment in which a plurality of power transmission devices 11 are installed, the plurality of power transmission devices 11 are included in the wireless communicable range of the power reception communication unit 36. That is, the power receiving communication unit 36 can wirelessly communicate with the power transmission communication units (the first power transmission communication unit 24a and the second power transmission communication unit 24b) of the plurality of power transmission devices 11. In addition, as a communication method of each of the communication units 24a, 24b, and 36, for example, wireless communication methods such as Bluetooth (registered trademark), Zigbee (registered trademark), and Wi-fi can be considered.
　本実施形態の非接触電力伝送システム１０は、電力伝送が行われる送電装置１１と受電装置１２との組み合わせを把握する構成を備えている。当該構成について以下詳細に説明する。 The contactless power transmission system 10 of this embodiment has a configuration for grasping a combination of a power transmission device 11 and a power reception device 12 that perform power transmission. This configuration will be described in detail below.
　図２に示すように、受電コントローラ３５は、自身の周囲に存在する送電装置１１を把握、即ち認識する把握部４１を備えている。把握部４１は、予め定められた応答要求信号として探索信号がブロードキャストで送信されるよう受電通信部３６を制御する。送電コントローラ２３ａ，２３ｂは、送電通信部２４ａ，２４ｂによって上記探索信号が受信された場合、接続継続状態か否かを判定する。送電コントローラ２３ａ，２３ｂは、接続継続状態でない場合には、送電装置１１ａ，１１ｂに関する情報である送電装置１１ａ，１１ｂの識別情報が含まれた探索応答信号が受電通信部３６に向けて送信されるよう送電通信部２４ａ，２４ｂを制御する。送電コントローラ２３ａ，２３ｂは、接続継続状態である場合には探索応答信号が送信されないよう送電通信部２４ａ，２４ｂを制御する。接続継続状態については後述する。 As shown in FIG. 2, the power receiving controller 35 includes a grasping unit 41 that grasps, that is, recognizes, the power transmission device 11 existing around the power receiving controller 35. The grasping unit 41 controls the power receiving communication unit 36 so that the search signal is transmitted by broadcast as a predetermined response request signal. When the search signal is received by the power transmission communication units 24a and 24b, the power transmission controllers 23a and 23b determine whether or not the connection is continued. When the power transmission controllers 23a and 23b are not in the connection continuation state, the search response signal including the identification information of the power transmission devices 11a and 11b, which is information related to the power transmission devices 11a and 11b, is transmitted toward the power receiving communication unit 36. The power transmission communication units 24a and 24b are controlled. The power transmission controllers 23a and 23b control the power transmission communication units 24a and 24b so that the search response signal is not transmitted in the connection continuation state. The connection continuation state will be described later.
　かかる構成において、把握部４１は、受電通信部３６によって受信された探索応答信号に基づいて、当該受電通信部３６と無線通信可能な送電通信部を有する送電装置１１を把握、即ち特定し、当該送電装置１１のリストを作成する。 In such a configuration, the grasping unit 41 grasps, that is, identifies the power transmission device 11 having the power transmission communication unit capable of wireless communication with the power receiving communication unit 36 based on the search response signal received by the power receiving communication unit 36. A list of power transmission devices 11 is created.
　本実施形態では、第１送電装置１１ａが有する第１の１次コイル２２ａの数は１つである。つまり、第１送電装置１１ａと第１の１次コイル２２ａとは１対１で対応している。このため、第１送電装置１１ａの識別情報は、第１の１次コイル２２ａに関する情報とも言える。第２送電装置１１ｂの識別情報についても同様である。 In the present embodiment, the number of the first primary coils 22a included in the first power transmission device 11a is one. That is, the 1st power transmission apparatus 11a and the 1st primary coil 22a respond | correspond one-to-one. For this reason, it can be said that the identification information of the 1st power transmission apparatus 11a is the information regarding the 1st primary coil 22a. The same applies to the identification information of the second power transmission device 11b.
　受電コントローラ３５は、接続状態設定部４２を備えている。把握部４１が複数の送電装置１１のうち二以上の送電装置１１を把握、即ち認識した場合には、接続状態設定部４２は、上記二以上の送電装置１１のうち未接続状態の１の送電装置１１と受電装置１２とを、当該１の送電装置１１の送電通信部と受電通信部３６とを介する接続が確立された接続状態（又は通信確立状態）に設定する。未接続状態とは、接続状態でもなく接続継続状態でもない状態である。 The power receiving controller 35 includes a connection state setting unit 42. When the grasping unit 41 grasps, that is, recognizes two or more power transmission devices 11 among the plurality of power transmission devices 11, the connection state setting unit 42 transmits one power transmission in an unconnected state among the two or more power transmission devices 11. The device 11 and the power receiving device 12 are set to a connection state (or a communication established state) in which a connection via the power transmission communication unit and the power receiving communication unit 36 of the one power transmission device 11 is established. The unconnected state is a state that is neither a connected state nor a connected state.
　接続状態設定部４２は、二以上の送電装置１１のうち１の送電装置１１として例えば第１送電装置１１ａを選択する。そして、接続状態設定部４２は、受電通信部３６を用いて、選択された第１送電装置１１ａの第１送電通信部２４ａに対して接続要求信号を送信する。 The connection state setting unit 42 selects, for example, the first power transmission device 11a as one power transmission device 11 among the two or more power transmission devices 11. And the connection state setting part 42 transmits a connection request signal with respect to the 1st power transmission communication part 24a of the selected 1st power transmission apparatus 11a using the power receiving communication part 36. FIG.
　第１送電コントローラ２３ａは、第１送電通信部２４ａによって上記接続要求信号が受信された場合、第１送電装置１１ａが接続状態か未接続状態かを判定する。第１送電コントローラ２３ａは、第１送電装置１１ａが未接続状態である場合には、第１送電装置１１ａを、受電装置１２と接続された接続状態に設定するとともに、第１送電通信部２４ａを用いて接続状態応答信号を送信する。接続状態設定部４２は、受電通信部３６によって接続状態応答信号が受信されることにより、受電装置１２を第１送電装置１１ａと接続された接続状態に設定する。これにより、第１送電装置１１ａと受電装置１２との間で、受電電力に関する情報のやり取りが可能となる。 The first power transmission controller 23a determines whether the first power transmission device 11a is in a connected state or an unconnected state when the connection request signal is received by the first power transmission communication unit 24a. When the first power transmission device 11a is not connected, the first power transmission controller 23a sets the first power transmission device 11a to a connected state connected to the power receiving device 12, and sets the first power transmission communication unit 24a. To transmit a connection state response signal. The connection state setting unit 42 sets the power reception device 12 to the connection state connected to the first power transmission device 11a when the power reception communication unit 36 receives the connection state response signal. As a result, information regarding received power can be exchanged between the first power transmission device 11a and the power reception device 12.
　換言すれば、接続状態とは、受電電力に関する情報のやり取りが可能となる状態であるとも言える。また、接続状態とは、第１送電装置１１ａと受電装置１２とが、第１送電通信部２４ａ及び受電通信部３６を介して互いに情報のやり取りを行うことを確立（認証）したペアリング状態であるとも言える。 In other words, it can be said that the connection state is a state in which information about received power can be exchanged. The connection state is a pairing state in which the first power transmission device 11a and the power reception device 12 establish (authenticate) information exchange with each other via the first power transmission communication unit 24a and the power reception communication unit 36. It can be said that there is.
　接続状態設定部４２は、接続状態となったことに基づいて、所定の記憶領域に、接続状態であることを示すフラグを設定する。これにより、受電コントローラ３５は、上記フラグの有無を確認することにより、接続状態であるか否かを把握できる。同様に、第１送電コントローラ２３ａは、接続状態となったことに基づいて、所定の記憶領域に、接続状態であることを示すフラグを設定する。 The connection state setting unit 42 sets a flag indicating the connection state in a predetermined storage area based on the connection state. Thereby, the power receiving controller 35 can grasp whether or not it is in the connected state by checking the presence or absence of the flag. Similarly, the first power transmission controller 23a sets a flag indicating the connection state in a predetermined storage area based on the connection state.
　第１送電コントローラ２３ａは、第１送電装置１１ａが既に接続状態である場合には、第１送電通信部２４ａを用いて接続を拒否する接続拒否信号を受電通信部３６に送信する。ここで、第１送電装置１１ａが接続状態である場合、当該第１送電装置１１ａは、接続要求信号を送信した受電装置１２とは別の受電装置１２と既に接続状態となっていることを意味する。つまり、各第１送電装置１１ａは、同時に複数の受電装置１２と接続状態となることが規制されている。 1st power transmission controller 23a transmits the connection rejection signal which refuses a connection to the power receiving communication part 36 using the 1st power transmission communication part 24a, when the 1st power transmission apparatus 11a is already a connection state. Here, when the 1st power transmission apparatus 11a is a connection state, the said 1st power transmission apparatus 11a means that the power reception apparatus 12 different from the power reception apparatus 12 which transmitted the connection request signal is already a connection state. To do. That is, each first power transmission device 11a is restricted from being connected to a plurality of power receiving devices 12 at the same time.
　接続状態設定部４２は、受電通信部３６によって接続拒否信号が受信された場合には、把握部４１によって把握された二以上の送電装置１１のうち別の送電装置１１（例えば第２送電装置１１ｂ）と接続状態となるための処理（接続要求）を実行する。つまり、接続状態設定部４２は、把握部４１によって把握された二以上の送電装置１１のうち未接続状態の送電装置１１が見つかるまで順次接続要求を行う。 When the connection rejection signal is received by the power receiving communication unit 36, the connection state setting unit 42 determines whether another power transmission device 11 (for example, the second power transmission device 11b) among the two or more power transmission devices 11 grasped by the grasping unit 41. ) And a process (connection request) for establishing a connection state. That is, the connection state setting unit 42 sequentially issues connection requests until an unconnected power transmission device 11 is found among the two or more power transmission devices 11 grasped by the grasping unit 41.
　なお、接続状態設定部４２は、把握部４１によって把握された二以上の送電装置１１のうち全てに対して接続要求を行ったにも関わらず、接続状態とならなかった場合、即ち接続が拒否された場合には、所定期間を隔てて再度各送電装置１１に対して順次接続要求を行う。そして、接続状態設定部４２は、全送電装置１１に対する接続要求を複数回行ったにも関わらず、接続状態とならなかった場合には、エラーであると判定する。 Note that the connection state setting unit 42 does not enter the connection state despite the connection request to all of the two or more power transmission apparatuses 11 grasped by the grasping unit 41, that is, the connection is rejected. In the case of being made, connection requests are sequentially made to the power transmission apparatuses 11 again at predetermined intervals. And the connection state setting part 42 determines with it being an error, when it does not become a connection state, although the connection request with respect to all the power transmission apparatuses 11 was performed in multiple times.
　ちなみに、接続状態設定部４２は、把握部４１によって作成されたリストに対して、各送電装置１１の状態の設定及び更新を行うとよい。例えば、接続状態設定部４２は、まず初期状態として、リストの各送電装置１１を未接続中と設定する。そして、接続状態設定部４２は、接続要求が拒否された送電装置１１を保留中と更新し、接続状態に設定されその後当該接続状態が解除された送電装置１１を伝送判定済みと更新してもよい。なお、接続状態設定部４２は、保留中の送電装置１１に対しては、状況によっては再度接続要求を行う場合があるが、伝送判定済みの送電装置１１に対しては、再度接続要求を行わない。 Incidentally, the connection state setting unit 42 may set and update the state of each power transmission device 11 with respect to the list created by the grasping unit 41. For example, the connection state setting unit 42 first sets each power transmission device 11 in the list as unconnected as an initial state. Then, the connection state setting unit 42 updates the power transmission device 11 for which the connection request has been rejected as pending, and updates the power transmission device 11 that has been set to the connection state and then released from the connection state as transmission determined. Good. The connection state setting unit 42 may make a connection request again to the pending power transmission device 11 depending on the situation, but performs a connection request again to the power transmission device 11 that has been determined to be transmitted. Absent.
　受電コントローラ３５は、接続状態設定部４２によって接続状態に設定されたことに基づいて、当該接続状態に設定された１の送電装置１１（例えば第１送電装置１１ａ）と受電装置１２との間で電力伝送を行うか否かの判定を行う伝送判定部４３を備えている。接続状態に設定された送電装置１１が対象送電装置に対応する。 The power receiving controller 35 is connected between the one power transmitting device 11 (for example, the first power transmitting device 11a) set in the connection state and the power receiving device 12 based on the connection state set by the connection state setting unit 42. A transmission determination unit 43 that determines whether or not to perform power transmission is provided. The power transmission device 11 set in the connection state corresponds to the target power transmission device.
　伝送判定部４３は、受電通信部３６を用いて、接続状態の第１送電装置１１ａの第１の１次コイル２２ａに識別用電力が入力されるよう第１送電通信部２４ａに対して送電要求信号（指示信号）を送信する。 The transmission determination unit 43 uses the power receiving communication unit 36 to request power transmission to the first power transmission communication unit 24a so that the identification power is input to the first primary coil 22a of the connected first power transmission device 11a. A signal (instruction signal) is transmitted.
　第１送電コントローラ２３ａは、第１送電通信部２４ａによって上記送電要求信号が受信された場合に、交流電力として識別用電力が予め定められた第１期間Ｔ１に亘って第１の１次コイル２２ａに入力されるよう第１電源部２１ａを制御する。 When the power transmission request signal is received by the first power transmission communication unit 24a, the first power transmission controller 23a includes the first primary coil 22a over a first period T1 in which identification power is predetermined as AC power. 1st power supply part 21a is controlled so that it may be inputted into.
　伝送判定部４３は、検知部３４の検知結果に基づいて、第１の１次コイル２２ａに識別用電力が入力されている状況において交流電力を受電しているか否かを判定する。
　詳細には、伝送判定部４３は、第１の１次コイル２２ａに識別用電力が入力されている状況において２次コイル３１にて交流電力が受電されていない場合、今回接続状態となった１の送電装置１１（第１送電装置１１ａ）と受電装置１２との間で電力伝送が行われないと判定する。 Based on the detection result of the detection unit 34, the transmission determination unit 43 determines whether or not AC power is being received in a situation where identification power is input to the first primary coil 22a.
Specifically, the transmission determination unit 43 is in a connection state this time when AC power is not received by the secondary coil 31 in a situation where identification power is input to the first primary coil 22a. It determines with electric power transmission not being performed between the power transmission apparatus 11 (1st power transmission apparatus 11a) and the power receiving apparatus 12.
　ちなみに、「交流電力が受電されている場合」とは、例えば検知部３４によって、予め定められた閾値以上の電力値の交流電力が検知されている場合が考えられる。この場合、閾値は、例えば、識別用電力の電力値に対して、予め定められた閾値効率を乗算した値であってもよい。 Incidentally, “when AC power is being received” can be considered, for example, when the detection unit 34 detects AC power having a power value equal to or higher than a predetermined threshold. In this case, the threshold value may be, for example, a value obtained by multiplying the power value of the identification power by a predetermined threshold efficiency.
　上記一連の処理、すなわち第１の１次コイル２２ａに識別用電力を入力させ、当該識別用電力が第１の１次コイル２２ａに入力されている場合に２次コイル３１によって交流電力が受電されているか否かを判定する処理を第１受電判定という。 When the identification power is input to the first primary coil 22a and the identification power is input to the first primary coil 22a, AC power is received by the secondary coil 31. The process for determining whether or not the power is received is referred to as a first power reception determination.
　伝送判定部４３は、第１受電判定により交流電力が受電されていると判定された場合、第２受電判定を行う。詳細には、伝送判定部４３は、識別用電力が第２期間Ｔ２に亘って第１の１次コイル２２ａに入力されるように第１送電コントローラ２３ａを指示し、２次コイル３１にて交流電力が受電されているか否かを判定する。なお、本実施形態では、第１期間Ｔ１と第２期間Ｔ２とは同一である。 The transmission determination unit 43 performs the second power reception determination when it is determined that the AC power is received by the first power reception determination. Specifically, the transmission determination unit 43 instructs the first power transmission controller 23a to input identification power to the first primary coil 22a over the second period T2, and causes the secondary coil 31 to perform alternating current. It is determined whether power is being received. In the present embodiment, the first period T1 and the second period T2 are the same.
　ここで、伝送判定部４３は、１回目の識別用電力の入力終了時点から、２回目の識別用電力の入力開始時点までの第１インターバル期間Ｔｉ１を、対象送電装置である第１送電装置１１ａの固有情報２３ａａに基づいて決定する。そして、伝送判定部４３は、１回目の識別用電力の入力終了時点から第１インターバル期間Ｔｉ１が経過した時点で２回目の識別用電力が入力されるよう第１送電コントローラ２３ａを指示する。詳細には、伝送判定部４３は、１回目の識別用電力の入力終了時点から第１インターバル期間Ｔｉ１が経過した時点で２回目の送電要求信号が送信されるようにする。 Here, the transmission determination unit 43 sets a first interval period Ti1 from the end of input of the first identification power to the start of input of the second identification power, the first power transmission apparatus 11a that is the target power transmission apparatus. It determines based on the specific information 23aa. Then, the transmission determination unit 43 instructs the first power transmission controller 23a to input the second identification power when the first interval period Ti1 has elapsed from the end of the first identification power input. Specifically, the transmission determination unit 43 transmits the second transmission request signal when the first interval period Ti1 has elapsed from the end of the first identification power input.
　送電コントローラ２３ａ，２３ｂは、送電装置１１ａ，１１ｂの固有情報２３ａａ，２３ｂｂをそれぞれ備えている。伝送判定部４３は、第１受電判定を実行する前段階にて、接続状態の送電装置１１（第１送電装置１１ａ又は第２送電装置１１ｂ）から固有情報（固有情報２３ａａ又は固有情報２３ｂｂ）を取得しておく。そして、伝送判定部４３は、当該固有情報を用いてインターバル期間（第１インターバル期間Ｔｉ１又は第２インターバル期間Ｔｉ２）を決定する。 The power transmission controllers 23a and 23b include specific information 23aa and 23bb of the power transmission devices 11a and 11b, respectively. The transmission determination unit 43 obtains unique information (unique information 23aa or unique information 23bb) from the connected power transmission device 11 (the first power transmission device 11a or the second power transmission device 11b) at the stage before executing the first power reception determination. Get it. And the transmission determination part 43 determines an interval period (1st interval period Ti1 or 2nd interval period Ti2) using the said specific information.
　固有情報は、対象送電装置となる送電装置１１（接続状態に設定される送電装置１１）ごとに異なっていれば任意であるが、例えば送電装置１１の識別情報や、送電通信部２４ａ，２４ｂが受電通信部３６と通信を行うのに用いるチャネル情報等が考えられる。また、ＰＡＮ　ＩＤ（Ｐｅｒｓｏｎａｌ　Ａｒｅａ　Ｎｅｔｗｏｒｋ　Ｉｄｅｎｔｉｆｉｅｒ）やＳＳＩＤ（Ｓｅｒｖｉｃｅ　Ｓｅｔ　Ｉｄｅｎｔｉｆｉｅｒ）などの通信ＩＤ情報であってもよい。 The unique information is arbitrary as long as it is different for each power transmission device 11 (power transmission device 11 set to the connection state) as the target power transmission device. For example, the identification information of the power transmission device 11 and the power transmission communication units 24a and 24b The channel information used for communicating with the power receiving communication unit 36 can be considered. Communication ID information such as PAN ID (Personal Area Network Identifier) and SSID (Service Set Identifier) may also be used.
　また、対象送電装置が第１送電装置１１ａである場合の第１インターバル期間Ｔｉ１と、第２送電装置１１ｂに対応する第２インターバル期間Ｔｉ２との差は、第２期間Ｔ２よりも長くなるように設定されている。第１期間Ｔ１は、各送電装置１１に関わらず同一である。 In addition, the difference between the first interval period Ti1 when the target power transmission apparatus is the first power transmission apparatus 11a and the second interval period Ti2 corresponding to the second power transmission apparatus 11b is longer than the second period T2. Is set. The first period T1 is the same regardless of each power transmission device 11.
　伝送判定部４３は、第２受電判定により交流電力が受電されていると判定された場合には、今回接続状態となった１の送電装置１１（第１送電装置１１ａ）と受電装置１２との間で電力伝送が行われると判定する。これに対して、伝送判定部４３は、第２受電判定により交流電力が受電されていないと判定された場合には、今回接続状態となった１の送電装置１１と受電装置１２との間で電力伝送が行われないと判定する。 When it is determined that the AC power is received by the second power reception determination, the transmission determination unit 43 determines whether the one power transmission device 11 (first power transmission device 11a) and the power reception device 12 that are in the connected state this time are connected. It is determined that power transmission is performed between them. On the other hand, when it is determined that the AC power is not received by the second power reception determination, the transmission determination unit 43 is connected between the one power transmission device 11 and the power reception device 12 that are in the connection state this time. It is determined that power transmission is not performed.
　つまり、本実施形態では、伝送判定部４３は、第１受電判定及び第２受電判定の双方において２次コイル３１にて交流電力が受電されていると判定された場合に、今回接続状態となった１の送電装置１１と受電装置１２とが電力伝送が行われる組み合わせであると判定する。 That is, in the present embodiment, the transmission determination unit 43 enters the current connection state when it is determined that AC power is received by the secondary coil 31 in both the first power reception determination and the second power reception determination. It is determined that the power transmission device 11 and the power reception device 12 are a combination in which power transmission is performed.
　伝送判定部４３による伝送判定は、接続状態設定部４２による接続状態の設定が行われたことに基づいて実行されることに着目すれば、接続状態の設定は、伝送判定を行うための条件であるとも言える。 If it is noted that the transmission determination by the transmission determination unit 43 is executed based on the connection state setting by the connection state setting unit 42, the connection state setting is a condition for performing the transmission determination. It can be said that there is.
　図２に示すように、受電コントローラ３５は、伝送判定部４３の判定結果に基づいて、接続状態の継続又は解除を行う継続判定部４４を備えている。
　継続判定部４４は、伝送判定部４３により接続状態の１の送電装置１１（例えば第１送電装置１１ａ）及び受電装置１２間で電力伝送が行われると判定された場合には、接続状態を継続する。詳細には、継続判定部４４は、受電通信部３６を用いて、接続状態の継続を要求する継続要求信号を第１送電通信部２４ａに送信する。第１送電コントローラ２３ａは、第１送電通信部２４ａによって継続要求信号が受信された場合に、現状の接続状態を継続すると決定するともに、第１送電通信部２４ａを用いて継続応答信号を受電通信部３６に送信する。継続判定部４４は、受電通信部３６によって継続応答信号が受信された場合に、接続状態を継続すると決定する。 As illustrated in FIG. 2, the power receiving controller 35 includes a continuation determination unit 44 that continues or cancels the connection state based on the determination result of the transmission determination unit 43.
The continuation determination unit 44 continues the connection state when the transmission determination unit 43 determines that power transmission is performed between the one power transmission device 11 (for example, the first power transmission device 11a) and the power reception device 12 in the connection state. To do. Specifically, the continuation determination unit 44 uses the power reception communication unit 36 to transmit a continuation request signal for requesting continuation of the connection state to the first power transmission communication unit 24a. When the first power transmission controller 23a receives the continuation request signal by the first power transmission communication unit 24a, the first power transmission controller 23a determines to continue the current connection state, and uses the first power transmission communication unit 24a to receive a continuation response signal. It transmits to the part 36. The continuation determination unit 44 determines to continue the connection state when the continuation response signal is received by the power receiving communication unit 36.
　以降の説明において、継続判定部４４により接続状態を継続することが判定された状態を接続継続状態と定義する。また、第１送電コントローラ２３ａ及び受電コントローラ３５の継続判定部４４は、接続状態を継続すると決定した場合に、接続状態を示すフラグを消去し、所定の記憶領域に、接続継続状態を示すフラグを設定する。これにより、第１送電コントローラ２３ａ及び受電コントローラ３５は、接続継続状態か否かを把握できる。 In the following description, the state determined by the continuation determination unit 44 to continue the connection state is defined as the connection continuation state. In addition, when the continuation determination unit 44 of the first power transmission controller 23a and the power reception controller 35 determines to continue the connection state, the flag indicating the connection state is erased and a flag indicating the connection continuation state is stored in a predetermined storage area. Set. Thereby, the 1st power transmission controller 23a and the power receiving controller 35 can grasp | ascertain whether it is a connection continuation state.
　つまり、送電装置１１及び受電装置１２は、接続状態、接続継続状態、又は、接続状態でもなく接続継続状態でもない未接続状態の３つの状態となり得る。そして、送電コントローラ２３ａ，２３ｂ及び受電コントローラ３５は、現在の状態が上記３つの状態（未接続状態、接続状態、接続継続状態）のいずれであるかを把握可能に構成されている。 That is, the power transmission device 11 and the power receiving device 12 can be in three states: a connection state, a connection continuation state, or an unconnected state that is neither a connection state nor a connection continuation state. The power transmission controllers 23a and 23b and the power reception controller 35 are configured to be able to grasp which of the three states (the unconnected state, the connected state, and the connection continuation state) is the current state.
　継続判定部４４は、伝送判定部４３により第１送電装置１１ａ及び受電装置１２間で電力伝送が行われないと判定された場合には、接続状態を解除して、第１送電装置１１ａ及び受電装置１２を未接続状態に設定する。詳細には、継続判定部４４は、第１送電装置１１ａとの接続を解除するとともに接続状態を示すフラグを消去する。そして、継続判定部４４は、受電通信部３６を用いて、接続状態の解除を要求する解除要求信号を第１送電通信部２４ａに送信する。第１送電コントローラ２３ａは、第１送電通信部２４ａによって解除要求信号が受信された場合に、受電装置１２との接続状態を解除し、接続状態を示すフラグを消去する。 When the transmission determining unit 43 determines that power transmission is not performed between the first power transmitting device 11a and the power receiving device 12, the continuation determining unit 44 cancels the connection state and the first power transmitting device 11a and the power receiving device. The device 12 is set to an unconnected state. Specifically, the continuation determination unit 44 cancels the connection with the first power transmission device 11a and deletes the flag indicating the connection state. And the continuation determination part 44 transmits the cancellation | release request signal which requests | requires cancellation | release of a connection state to the 1st power transmission communication part 24a using the power receiving communication part 36. FIG. When the release request signal is received by the first power transmission communication unit 24a, the first power transmission controller 23a cancels the connection state with the power receiving device 12 and erases the flag indicating the connection state.
　非接触電力伝送システム１０は、継続判定部４４により接続状態を継続すると判定された場合に、予め定められた終了条件が成立するまで、接続継続状態の送電装置１１（例えば第１送電装置１１ａ）と受電装置１２との間で電力伝送が行われるように構成されている。 When the non-contact power transmission system 10 determines that the connection state is continued by the continuation determination unit 44, the power transmission device 11 in the connection continuation state (for example, the first power transmission device 11a) until a predetermined termination condition is satisfied. And the power receiving device 12 are configured to perform power transmission.
　詳細には、受電コントローラ３５は、受電通信部３６を用いて、交流電力として識別用電力よりも電力値が大きい充電用電力を要求する充電要求信号を第１送電通信部２４ａに送信する。第１送電コントローラ２３ａは、第１送電通信部２４ａによって充電要求信号が受信された場合に、第１の１次コイル２２ａに対して充電用電力が入力されるよう第１電源部２１ａを制御する。これにより、第１送電装置１１ａから受電装置１２に向けて充電用電力が伝送され、車両用バッテリ３３が充電される。 Specifically, the power reception controller 35 uses the power reception communication unit 36 to transmit a charge request signal for requesting charging power having a power value larger than the identification power as AC power to the first power transmission communication unit 24a. The first power transmission controller 23a controls the first power supply unit 21a so that charging power is input to the first primary coil 22a when the charge request signal is received by the first power transmission communication unit 24a. . Thereby, the electric power for charging is transmitted from the first power transmission device 11a toward the power receiving device 12, and the vehicle battery 33 is charged.
　受電コントローラ３５は、充電用電力による電力伝送が行われている間、定期的に受電電力の電力値を把握し、その把握結果に関する情報を、受電通信部３６を用いて第１送電通信部２４ａに送信する。第１送電コントローラ２３ａは、第１送電通信部２４ａによって上記情報が受信された場合に、受電電力の電力値が所望の電力値となるように第１電源部２１ａを制御する。つまり、車両用バッテリ３３の充電中、第１送電通信部２４ａ及び受電通信部３６を介して、情報のやり取りが行われる。 The power receiving controller 35 periodically grasps the power value of the received power while the power transmission by the charging power is being performed, and uses the power receiving communication unit 36 to obtain information about the grasped result as the first power transmission communication unit 24a. Send to. When the first information is received by the first power transmission communication unit 24a, the first power transmission controller 23a controls the first power supply unit 21a so that the power value of the received power becomes a desired power value. That is, information is exchanged through the first power transmission communication unit 24 a and the power reception communication unit 36 during charging of the vehicle battery 33.
　また、受電コントローラ３５は、終了条件が成立しているか否かを判定し、終了条件が成立している場合には、受電通信部３６を用いて、充電終了を要求する充電終了要求信号を第１送電通信部２４ａに送信する。第１送電コントローラ２３ａは、第１送電通信部２４ａによって充電終了要求信号が受信された場合に、充電用電力の出力が停止するよう第１電源部２１ａを制御する。 In addition, the power receiving controller 35 determines whether or not the termination condition is satisfied. If the termination condition is satisfied, the power reception controller 35 uses the power reception communication unit 36 to generate a charge termination request signal for requesting termination of charging. 1 Transmit to the power transmission communication unit 24a. The 1st power transmission controller 23a controls the 1st power supply part 21a so that the output of the electric power for charge may be stopped, when the charge end request signal is received by the 1st power transmission communication part 24a.
　ここで、終了条件とは、例えば車両用バッテリ３３の充電状態（ＳＯＣ）が満充電状態（充電終了契機状態）となった場合、又は、電力伝送に何らかの支障が生じた場合が考えられる。 Here, the termination condition may be, for example, when the state of charge (SOC) of the vehicle battery 33 is in a fully charged state (charging termination trigger state) or when some trouble occurs in power transmission.
　また、終了条件としてはこれに限られず、例えば各送電装置１１ａ，１１ｂに終了スイッチが設けられている構成においては、終了条件として終了スイッチが操作された場合を採用してもよい。この場合、送電コントローラ２３ａ，２３ｂが、終了スイッチが操作されたか否かの判定を行うとよい。つまり、終了条件は任意であり、且つ、終了条件が成立したか否かの判定の実行主体は、受電コントローラ３５であってもよいし、送電コントローラ２３ａ，２３ｂであってもよい。 Further, the end condition is not limited to this, and for example, in the configuration in which the end switch is provided in each of the power transmission apparatuses 11a and 11b, a case where the end switch is operated as the end condition may be employed. In this case, the power transmission controllers 23a and 23b may determine whether or not the end switch has been operated. That is, the end condition is arbitrary, and the execution subject for determining whether the end condition is satisfied may be the power receiving controller 35 or the power transmission controllers 23a and 23b.
　非接触電力伝送システム１０は、継続判定部４４により接続状態が解除された場合には、把握部４１によって把握された二以上の送電装置１１のうち、接続状態が解除された１の送電装置１１（伝送判定済みの送電装置１１）とは別の送電装置１１と受電装置１２とが、電力伝送が行われる組み合わせであるか否かを判定するよう構成されている。 When the connection state is canceled by the continuation determination unit 44, the non-contact power transmission system 10 is one of the two or more power transmission devices 11 that has been grasped by the grasping unit 41 and whose connection state has been canceled. It is configured to determine whether or not a power transmission device 11 and a power reception device 12 different from (transmission-determined power transmission device 11) are a combination in which power transmission is performed.
　詳細には、接続状態設定部４２は、継続判定部４４により接続状態が解除された場合に、接続状態が解除された送電装置１１（例えば第１送電装置１１ａ）とは別の未接続状態の送電装置１１（例えば第２送電装置１１ｂ）と受電装置１２とを接続状態に設定する。そして、伝送判定部４３は、新たに設定された接続状態の第２送電装置１１ｂと受電装置１２との間で電力伝送が行われるか否かの判定（第１受電判定及び第２受電判定）を行う。継続判定部４４は、第２送電装置１１ｂと受電装置１２とを対象とする伝送判定部４３の判定結果に基づいて、第２送電装置１１ｂと受電装置１２との接続状態を継続するか否かを判定する。これらの具体的な構成については、第１送電装置１１ａと受電装置１２とが接続状態である場合と同様であるため、詳細な説明を省略する。 Specifically, when the connection state is canceled by the continuation determination unit 44, the connection state setting unit 42 is in an unconnected state different from the power transmission device 11 (for example, the first power transmission device 11a) whose connection state has been canceled. The power transmission device 11 (for example, the second power transmission device 11b) and the power reception device 12 are set to a connected state. And the transmission determination part 43 determines whether electric power transmission is performed between the 2nd power transmission apparatus 11b and the power receiving apparatus 12 of the newly set connection state (1st power reception determination and 2nd power reception determination). I do. Whether or not the continuation determination unit 44 continues the connection state between the second power transmission device 11b and the power reception device 12 based on the determination result of the transmission determination unit 43 targeting the second power transmission device 11b and the power reception device 12. Determine. Since these specific configurations are the same as when the first power transmitting device 11a and the power receiving device 12 are in the connected state, detailed description thereof is omitted.
　ちなみに、接続状態設定部４２は、継続判定部４４により接続状態が解除されたことに基づいて、新たな接続状態の設定（接続要求）を行うよう構成されている。つまり、受電装置１２は、同時に複数の送電装置１１と接続状態となることが規制されている。 Incidentally, the connection state setting unit 42 is configured to set a new connection state (connection request) based on the release of the connection state by the continuation determination unit 44. That is, the power receiving device 12 is restricted from being connected to a plurality of power transmitting devices 11 at the same time.
　既に説明した通り、把握部４１は、接続応答信号に基づいて、送電装置１１を把握する。当該接続応答信号は、接続継続状態でない場合には送信され、接続継続状態である場合には送信されない。このため、把握部４１としては、二以上の送電装置１１のうち、受電通信部３６と無線通信が可能な送電通信部を有し、且つ、接続継続状態以外の送電装置１１（未接続状態又は接続状態であるもの）を把握する。なお、受電通信部３６と無線通信が可能な送電通信部とは、受電通信部３６に対して予め定められた特定距離（受電通信部３６が通信可能な距離）内に存在するものであるとも言える。 As already described, the grasping unit 41 grasps the power transmission device 11 based on the connection response signal. The connection response signal is transmitted when the connection is not continued, and is not transmitted when the connection is continued. For this reason, as grasping part 41, it has power transmission communication part which can perform wireless communication with power receiving communication part 36 among two or more power transmission apparatuses 11, and power transmission apparatus 11 other than a connection continuation state (unconnected state or Know what is connected). Note that the power transmission communication unit capable of wireless communication with the power reception communication unit 36 is present within a predetermined distance (distance that the power reception communication unit 36 can communicate) with the power reception communication unit 36. I can say that.
　なお、接続状態設定部４２は、把握部４１によって把握された送電装置１１が１つである場合には、その把握された送電装置１１と受電装置１２とを接続状態に設定する。そして、伝送判定部４３は、当該接続状態となった送電装置１１及び受電装置１２間で電力伝送が行われるか否かを判定する。そして、継続判定部４４は、伝送判定部４３の判定結果が肯定判定である場合、即ち第２受電判定において２次コイル３１に交流電力が受電された場合には、接続状態を継続し、充電用電力を用いた電力伝送処理を実行する。 The connection state setting unit 42 sets the grasped power transmission device 11 and the power receiving device 12 in the connection state when the number of the power transmission devices 11 grasped by the grasping unit 41 is one. And the transmission determination part 43 determines whether electric power transmission is performed between the power transmission apparatus 11 and the power receiving apparatus 12 which became the said connection state. Then, when the determination result of the transmission determination unit 43 is affirmative, that is, when AC power is received by the secondary coil 31 in the second power reception determination, the continuation determination unit 44 continues the connection state and charges A power transmission process using utility power is executed.
　次に本実施形態の作用について図３～図８を用いて説明する。図３及び図６～図８においては、各１次コイル２２ａ，２２ｂ及び２次コイル３１ａ，３１ｂに入力される電力値の態様を示すとともに、通信態様を矢印で示す。この場合、図示の都合上、一部の矢印については、同一時刻であっても適宜ずらして示す。例えば、図３において、送電要求信号が送信される時点と識別用電力が入力される時点とは、ずれているが、実際にはほぼ同一である。 Next, the operation of this embodiment will be described with reference to FIGS. In FIGS. 3 and 6 to 8, modes of power values input to the primary coils 22 a and 22 b and the secondary coils 31 a and 31 b are shown, and communication modes are shown by arrows. In this case, for the convenience of illustration, some arrows are appropriately shifted even at the same time. For example, in FIG. 3, the time point at which the power transmission request signal is transmitted and the time point at which the identification power is input are deviated, but are actually substantially the same.
　さらに、図３及び図６～図８においては、送電装置１１ａ，１１ｂ及び受電装置１２ａ，１２ｂの状態（未接続状態、接続状態、接続継続状態）を合わせて示す。詳細には、接続状態である期間を二点鎖線の矢印で示し、接続継続状態である期間を一点鎖線の矢印で示す。一点鎖線の矢印及び二点鎖線の矢印が記載されていない期間は、未接続状態である。 3 and FIGS. 6 to 8 also show the states of the power transmitting devices 11a and 11b and the power receiving devices 12a and 12b (unconnected state, connected state, connection continuation state). Specifically, the period in the connected state is indicated by a two-dot chain line arrow, and the period in the connection continued state is indicated by a one-dot chain line arrow. The period in which the one-dot chain line arrow and the two-dot chain line arrow are not described is an unconnected state.
　まず、第１のケースとして、図４に示すように、第１駐車スペースＳ１に第１車両Ｃ１が配置された場合を想定する。この場合、第１車両Ｃ１が第１駐車スペースＳ１に配置された時点では、各送電装置１１ａ，１１ｂは未接続状態であったものとする。そして、第１車両Ｃ１に搭載された受電装置１２（以降第１受電装置１２ａという）への電力伝送中に、受電装置１２（以降第２受電装置１２ｂという）が搭載された第２車両Ｃ２が第２駐車スペースＳ２に配置されたものとする。 First, as a first case, as shown in FIG. 4, a case is assumed where the first vehicle C1 is arranged in the first parking space S1. In this case, it is assumed that the power transmission devices 11a and 11b are in an unconnected state when the first vehicle C1 is arranged in the first parking space S1. The second vehicle C2 in which the power receiving device 12 (hereinafter referred to as the second power receiving device 12b) is mounted during power transmission to the power receiving device 12 (hereinafter referred to as the first power receiving device 12a) mounted in the first vehicle C1. It is assumed that it is arranged in the second parking space S2.
　説明の便宜上、以降の説明において、第１受電装置１２ａが有する２次コイル３１、受電コントローラ３５及び受電通信部３６を、第１の２次コイル３１ａ、第１受電コントローラ３５ａ及び第１受電通信部３６ａとする。第２受電装置１２ｂが有する２次コイル３１、受電コントローラ３５及び受電通信部３６を、第２の２次コイル３１ｂ、第２受電コントローラ３５ｂ及び第２受電通信部３６ｂとする。 For convenience of explanation, in the following explanation, the secondary coil 31, the power receiving controller 35, and the power receiving communication unit 36 of the first power receiving device 12a are referred to as the first secondary coil 31a, the first power receiving controller 35a, and the first power receiving communication unit. 36a. The secondary coil 31, the power reception controller 35, and the power reception communication unit 36 included in the second power reception device 12b are referred to as a second secondary coil 31b, a second power reception controller 35b, and a second power reception communication unit 36b.
　図３に示すように、第１車両Ｃ１が第１駐車スペースＳ１に配置された場合、まず時点ｔ１にて、第１受電装置１２ａ（第１受電コントローラ３５ａ）の把握部４１による送電装置１１の把握が行われる。詳細には、探索信号がブロードキャストで送信される。この場合、各送電装置１１ａ，１１ｂは、接続継続状態ではない（未接続状態である）ため、各送電通信部２４ａ，２４ｂから探索応答信号が送信される。これにより、把握部４１によって、各送電装置１１ａ，１１ｂが把握される。 As shown in FIG. 3, when the first vehicle C1 is arranged in the first parking space S1, first, at time t1, the power transmission device 11 by the grasping unit 41 of the first power reception device 12a (first power reception controller 35a). A grasp is made. Specifically, the search signal is transmitted by broadcast. In this case, since each of the power transmission devices 11a and 11b is not in the connection continuation state (is not connected), a search response signal is transmitted from each of the power transmission communication units 24a and 24b. Thereby, each power transmission apparatus 11a, 11b is grasped by grasping part 41.
　その後、図３（ａ）及び図３（ｃ）に示すように、時点ｔ２で、第１受電装置１２ａの接続状態設定部４２は、送電装置１１ａ，１１ｂのうち第２送電装置１１ｂを選択し、第２送電装置１１ｂに対して接続要求を行う。この場合、第２送電装置１１ｂは、接続状態ではない（未接続状態である）ため、接続要求に応じる。これにより、第１受電装置１２ａと第２送電装置１１ｂとが接続状態となる。 Thereafter, as illustrated in FIG. 3A and FIG. 3C, at time t2, the connection state setting unit 42 of the first power receiving device 12a selects the second power transmitting device 11b among the power transmitting devices 11a and 11b. Then, a connection request is made to the second power transmission device 11b. In this case, the second power transmission device 11b is not connected (is not connected), and therefore responds to the connection request. Thereby, the 1st power receiving apparatus 12a and the 2nd power transmission apparatus 11b will be in a connection state.
　その後、時点ｔ３で、第１受電通信部３６ａから第２送電通信部２４ｂに向けて送電要求信号が送信される。これにより、第２の１次コイル２２ｂに識別用電力が第１期間Ｔ１に亘って入力される。この場合、第１受電装置１２ａの伝送判定部４３によって、第１期間Ｔ１中に第１の２次コイル３１ａにて交流電力が受電されているか否かの判定（第１受電判定）が行われる。 Thereafter, at time t3, a power transmission request signal is transmitted from the first power receiving communication unit 36a toward the second power transmission communication unit 24b. As a result, identification power is input to the second primary coil 22b over the first period T1. In this case, the transmission determination unit 43 of the first power receiving device 12a determines whether or not AC power is received by the first secondary coil 31a during the first period T1 (first power reception determination). .
　本第１のケースでは、第１駐車スペースＳ１に第１車両Ｃ１が駐車されているため、第２の１次コイル２２ｂに識別用電力が入力された場合であっても、第１の２次コイル３１ａには、交流電力は受電されない又は無視できる程度に小さい。このため、第１受電判定の判定結果は、第１の２次コイル３１ａには交流電力が受電されていないことを示す否定判定となる。すると、時点ｔ４にて、第１受電装置１２ａと第２送電装置１１ｂとの接続状態が解除される。 In the first case, since the first vehicle C1 is parked in the first parking space S1, the first secondary even if the power for identification is input to the second primary coil 22b. The coil 31a does not receive AC power or is negligibly small. For this reason, the determination result of the first power reception determination is a negative determination indicating that AC power is not received by the first secondary coil 31a. Then, at the time t4, the connection state between the first power receiving device 12a and the second power transmitting device 11b is released.
　第１受電装置１２ａと第２送電装置１１ｂとの接続状態が解除されたことにより、第１受電装置１２ａは他の未接続状態の送電装置１１（第１送電装置１１ａ）と接続状態となることが可能となる。このため、図３（ａ）及び図３（ｂ）に示すように、時点ｔ５にて、第１受電装置１２ａの接続状態設定部４２は、第１送電装置１１ａに対して接続要求を行い、第１受電装置１２ａと第１送電装置１１ａとが接続状態となる。 When the connection state between the first power reception device 12a and the second power transmission device 11b is released, the first power reception device 12a is in a connection state with another unconnected power transmission device 11 (first power transmission device 11a). Is possible. Therefore, as shown in FIG. 3A and FIG. 3B, at time t5, the connection state setting unit 42 of the first power receiving device 12a makes a connection request to the first power transmitting device 11a, The 1st power receiving apparatus 12a and the 1st power transmission apparatus 11a will be in a connection state.
　そして、時点ｔ６にて、第１受電通信部３６ａから第１送電通信部２４ａに向けて送電要求信号が送信される。これにより、第１の１次コイル２２ａに識別用電力が第１期間Ｔ１に亘って入力される。そして、第１受電装置１２ａの伝送判定部４３によって、第１受電判定が行われる。 Then, at time t6, the power transmission request signal is transmitted from the first power receiving communication unit 36a toward the first power transmission communication unit 24a. As a result, identification power is input to the first primary coil 22a over the first period T1. And the 1st power reception determination is performed by the transmission determination part 43 of the 1st power receiving apparatus 12a.
　図３（ａ）及び図３（ｂ）に示すように、第１の１次コイル２２ａに識別用電力が入力されている場合、第１の２次コイル３１ａによって識別用電力に対応した交流電力が受電される。これにより、第１受電装置１２ａの伝送判定部４３の第１受電判定の判定結果は、第１の２次コイル３１ａによって交流電力が受電されていることを示す肯定判定となる。 As shown in FIGS. 3A and 3B, when the identification power is input to the first primary coil 22a, the AC power corresponding to the identification power by the first secondary coil 31a. Is received. Thereby, the determination result of the 1st power reception determination of the transmission determination part 43 of the 1st power receiving apparatus 12a becomes affirmation determination which shows that alternating current power is received by the 1st secondary coil 31a.
　第１受電判定の判定結果が肯定判定となった場合、第２受電判定が行われる。詳細には、時点ｔ７で、再度送電要求信号が送信される。これにより、再度識別用電力が第１の１次コイル２２ａに第２期間Ｔ２に亘って入力される。この場合、１回目の識別用電力の入力終了時点から、２回目の識別用電力の入力開始時点（２回目の送電要求信号の送信時点）までの第１インターバル期間Ｔｉ１は、第１送電装置１１ａの固有情報２３ａａに基づいて決定される。 When the determination result of the first power reception determination is affirmative, the second power reception determination is performed. Specifically, the power transmission request signal is transmitted again at time t7. As a result, the identification power is input again to the first primary coil 22a over the second period T2. In this case, the first interval period Ti1 from the end of the first identification power input to the second identification power input start time (second transmission request signal transmission time) is the first power transmission device 11a. It is determined based on the specific information 23aa.
　また、第１の１次コイル２２ａに再度識別用電力が入力された場合、第１の２次コイル３１ａにて再度交流電力が受電されるため、第２受電判定の判定結果も肯定判定となる。
　第２受電判定の判定結果が肯定判定となったことに基づいて、第１受電装置１２ａと第１送電装置１１ａとが、電力伝送が行われる組み合わせであると判定される。この場合、時点ｔ８で、接続継続状態の設定に係る処理が行われ、第１受電装置１２ａと第１送電装置１１ａとが接続継続状態となる。 Further, when identification power is input again to the first primary coil 22a, AC power is received again by the first secondary coil 31a, so the determination result of the second power reception determination is also a positive determination. .
Based on the determination result of the second power reception determination being affirmative, it is determined that the first power reception device 12a and the first power transmission device 11a are a combination in which power transmission is performed. In this case, at time t8, processing related to setting of the connection continuation state is performed, and the first power receiving device 12a and the first power transmission device 11a are in the connection continuation state.
　接続継続状態となった後は、終了条件が成立するまで本格的な電力伝送が行われる。詳細には、時点ｔ９で、第１の１次コイル２２ａに充電用電力が入力される（第１電源部２１ａから充電用電力が出力される）。そして、第１の２次コイル３１ａによって、充電用電力に対応する交流電力が受電され、当該交流電力は車両用バッテリ３３の充電に用いられる。 After the connection has been continued, full-scale power transmission is performed until the termination condition is satisfied. Specifically, at time t9, charging power is input to the first primary coil 22a (charging power is output from the first power supply unit 21a). The first secondary coil 31 a receives AC power corresponding to the charging power, and the AC power is used for charging the vehicle battery 33.
　かかる状態において、第２車両Ｃ２が第２駐車スペースＳ２に配置される。そして、図３（ｄ）に示すように、時点ｔ１０にて、第２受電装置１２ｂ（第２受電コントローラ３５ｂ）の把握部４１による把握が行われる。詳細には、第２受電通信部３６ｂから探索信号がブロードキャストで送信される。 In this state, the second vehicle C2 is placed in the second parking space S2. And as shown in FIG.3 (d), the grasping | ascertainment part 41 of the 2nd power receiving apparatus 12b (2nd power receiving controller 35b) is performed at the time t10. Specifically, the search signal is transmitted by broadcast from the second power receiving communication unit 36b.
　このとき、第１送電装置１１ａは接続継続状態となっている。このため、第１送電通信部２４ａからは探索応答信号が送信されない。これに対して、第２送電装置１１ｂは未接続状態であるため、第２送電通信部２４ｂからは探索応答信号が送信される。 At this time, the first power transmission device 11a is in a connection continuation state. For this reason, a search response signal is not transmitted from the 1st power transmission communication part 24a. On the other hand, since the 2nd power transmission apparatus 11b is an unconnected state, a search response signal is transmitted from the 2nd power transmission communication part 24b.
　すなわち、把握部４１によって把握される送電装置１１から、接続継続状態のものが除外されている。二以上の送電装置１１のうち、未接続状態、又は、接続状態であるものが把握部４１によって把握される。その後、接続状態の設定が行われる。 That is, the connection continuation state is excluded from the power transmission device 11 grasped by the grasping unit 41. Among the two or more power transmission apparatuses 11, the grasping unit 41 grasps the unconnected state or the connected state. Thereafter, the connection state is set.
　時点ｔ１１で、終了条件が成立した場合には、第１の１次コイル２２ａへの充電用電力の入力が停止される。充電用電力の入力の停止した後は、接続状態を解除してもよいし、第１車両Ｃ１が退出（移動）するまで接続状態を継続してもよい。 When the termination condition is satisfied at time t11, the input of charging power to the first primary coil 22a is stopped. After the input of charging power is stopped, the connected state may be released, or the connected state may be continued until the first vehicle C1 leaves (moves).
　次に、図５及び図６を用いて第２のケースについて説明する。
　図５に示すように、第２のケースにおいては、２つの車両Ｃ１，Ｃ２がほぼ同時に駐車スペースＳ１，Ｓ２にそれぞれ進入し、第１駐車スペースＳ１に第１車両Ｃ１が配置され、第２駐車スペースＳ２に第２車両Ｃ２が配置されたとする。なお、各送電装置１１ａ，１１ｂは車両Ｃ１，Ｃ２が進入してくる前は、未接続状態であるとする。 Next, a 2nd case is demonstrated using FIG.5 and FIG.6.
As shown in FIG. 5, in the second case, the two vehicles C1 and C2 enter the parking spaces S1 and S2 almost simultaneously, the first vehicle C1 is arranged in the first parking space S1, and the second parking is performed. It is assumed that the second vehicle C2 is arranged in the space S2. It is assumed that the power transmission apparatuses 11a and 11b are not connected before the vehicles C1 and C2 enter.
　かかる構成においては、第１送電装置１１ａ（第１の１次コイル２２ａ）と第１受電装置１２ａ（第１の２次コイル３１ａ）との間で電力伝送が行われ、第２送電装置１１ｂ（第２の１次コイル２２ｂ）と第２受電装置１２ｂ（第２の２次コイル３１ｂ）との間で電力伝送が行われる。 In such a configuration, power transmission is performed between the first power transmission device 11a (first primary coil 22a) and the first power reception device 12a (first secondary coil 31a), and the second power transmission device 11b ( Power transmission is performed between the second primary coil 22b) and the second power receiving device 12b (second secondary coil 31b).
　図６に示すように、まず時点ｔ２１で、第１受電装置１２ａの把握部４１による把握処理が行われ、送電装置１１ａ，１１ｂが把握される。同様に、時点ｔ２２にて、第２受電装置１２ｂの把握部４１による把握処理が行われ、送電装置１１ａ，１１ｂが把握される。 As shown in FIG. 6, first, at time t21, the grasping process by the grasping unit 41 of the first power receiving device 12a is performed, and the power transmitting devices 11a and 11b are grasped. Similarly, at time t22, the grasping process by the grasping unit 41 of the second power receiving device 12b is performed, and the power transmitting devices 11a and 11b are grasped.
　その後、図６（ａ）及び図６（ｄ）に示すように、時点ｔ２３で、第１受電装置１２ａと第２送電装置１１ｂとが接続状態となる。そして、時点ｔ２４で、第１受電通信部３６ａから第２送電通信部２４ｂに向けて送電要求信号が送信される。これにより、第２の１次コイル２２ｂに識別用電力が入力される。 Thereafter, as shown in FIGS. 6A and 6D, at time t23, the first power receiving device 12a and the second power transmitting device 11b are connected. Then, at time t24, a power transmission request signal is transmitted from the first power reception communication unit 36a toward the second power transmission communication unit 24b. As a result, identification power is input to the second primary coil 22b.
　図６（ｂ）及び図６（ｄ）に示すように、時点ｔ２５で、第２受電装置１２ｂの接続状態設定部４２が第２送電装置１１ｂに対して接続要求を行う。この場合、第２送電装置１１ｂは既に第１受電装置１２ａと接続状態となっているため、第２送電装置１１ｂは、第２受電装置１２ｂの接続状態設定部４２からの接続要求を拒否する。このため、第２受電装置１２ｂと第２送電装置１１ｂとは接続状態とならない。 6B and 6D, at time t25, the connection state setting unit 42 of the second power receiving device 12b makes a connection request to the second power transmitting device 11b. In this case, since the second power transmission device 11b is already connected to the first power reception device 12a, the second power transmission device 11b rejects the connection request from the connection state setting unit 42 of the second power reception device 12b. For this reason, the 2nd power receiving apparatus 12b and the 2nd power transmission apparatus 11b are not in a connection state.
　この場合、図６（ｂ）及び図６（ｃ）に示すように、時点ｔ２６で、第２受電装置１２ｂの接続状態設定部４２は、第１送電装置１１ａに対して接続要求を行い、第２受電装置１２ｂと第１送電装置１１ａとが接続状態となる。 In this case, as shown in FIG. 6B and FIG. 6C, at time t26, the connection state setting unit 42 of the second power receiving device 12b makes a connection request to the first power transmitting device 11a, and 2 The power receiving device 12b and the first power transmitting device 11a are connected.
　図６（ａ）及び図６（ｄ）に示すように、第２の１次コイル２２ｂに識別用電力が入力されている場合、第１の２次コイル３１ａには、交流電力は受電されない。このため、第１受電装置１２ａの伝送判定部４３による第１受電判定の判定結果は否定判定となる。この場合、時点ｔ２７にて、第１受電装置１２ａと第２送電装置１１ｂとの接続状態が解除される。 As shown in FIGS. 6A and 6D, when identification power is input to the second primary coil 22b, AC power is not received by the first secondary coil 31a. For this reason, the determination result of the 1st power reception determination by the transmission determination part 43 of the 1st power receiving apparatus 12a becomes negative determination. In this case, the connection state between the first power receiving device 12a and the second power transmitting device 11b is released at time t27.
　その後、図６（ａ）及び図６（ｃ）に示すように、時点ｔ２８にて、第１受電装置１２ａの接続状態設定部４２は、第１送電装置１１ａに対して接続要求を行う。この場合、第１送電装置１１ａは、既に第２受電装置１２ｂと接続状態となっているため、当該接続要求を拒否する。 Thereafter, as shown in FIGS. 6A and 6C, at time t28, the connection state setting unit 42 of the first power receiving device 12a makes a connection request to the first power transmitting device 11a. In this case, the first power transmission device 11a is already connected to the second power reception device 12b, and therefore rejects the connection request.
　また、図６（ｂ）及び図６（ｃ）に示すように、時点ｔ２９で、第２受電通信部３６ｂから第１送電通信部２４ａに向けて送電要求信号が送信され、第１の１次コイル２２ａに識別用電力が入力される。この場合、第２の２次コイル３１ｂには交流電力が受電されない。このため、第２受電装置１２ｂの伝送判定部４３による第１受電判定の判定結果は否定判定となる。よって、時点ｔ３０で、第２受電装置１２ｂと第１送電装置１１ａとの接続状態が解除される。 Also, as shown in FIGS. 6B and 6C, at time t29, a power transmission request signal is transmitted from the second power receiving communication unit 36b to the first power transmission communication unit 24a, and the first primary Identification power is input to the coil 22a. In this case, AC power is not received by the second secondary coil 31b. For this reason, the determination result of the first power reception determination by the transmission determination unit 43 of the second power receiving device 12b is a negative determination. Therefore, the connection state between the second power receiving device 12b and the first power transmitting device 11a is released at time t30.
　その後、図６（ａ）及び図６（ｃ）に示すように、接続要求が拒否された時点ｔ２８から所定期間を隔てた時点ｔ３１にて、第１受電装置１２ａの接続状態設定部４２は、第１送電装置１１ａに対して再度接続要求を行う。この場合、第１送電装置１１ａは未接続状態であるため、第１送電装置１１ａは接続要求に応答する。これにより、第１受電装置１２ａと第１送電装置１１ａとが接続状態となる。 Thereafter, as shown in FIGS. 6A and 6C, at a time t31 that is a predetermined period away from the time t28 when the connection request is rejected, the connection state setting unit 42 of the first power receiving device 12a A connection request is made again to the first power transmission device 11a. In this case, since the first power transmission device 11a is not connected, the first power transmission device 11a responds to the connection request. Thereby, the 1st power receiving apparatus 12a and the 1st power transmission apparatus 11a will be in a connection state.
　その後、図６（ｂ）及び図６（ｄ）に示すように、時点ｔ３２で、第２受電装置１２ｂと第２送電装置１１ｂとが接続状態となる。そして、図６（ａ）及び図６（ｃ）に示すように、時点ｔ３３で、第１受電通信部３６ａから第１送電通信部２４ａに向けて送電要求信号が送信され、第１の１次コイル２２ａに識別用電力が入力される。この場合、図６（ａ）に示すように、第１の２次コイル３１ａにて識別用電力に対応する交流電力が受電される。このため、第１受電判定の判定結果が肯定判定となり、第２受電判定が行われる。そして、第２受電判定の判定結果が肯定判定となることにより、接続状態が継続される。 Thereafter, as shown in FIGS. 6B and 6D, at time t32, the second power receiving device 12b and the second power transmitting device 11b are connected. Then, as shown in FIGS. 6A and 6C, at time t33, a power transmission request signal is transmitted from the first power receiving communication unit 36a toward the first power transmission communication unit 24a, and the first primary Identification power is input to the coil 22a. In this case, as shown in FIG. 6 (a), the first secondary coil 31a receives AC power corresponding to the identification power. For this reason, the determination result of the first power reception determination is an affirmative determination, and the second power reception determination is performed. Then, when the determination result of the second power reception determination is affirmative, the connection state is continued.
　また、図６（ｂ）及び図６（ｄ）に示すように、時点ｔ３４で、第２受電通信部３６ｂから第２送電通信部２４ｂに向けて送電要求信号が送信され、第２の１次コイル２２ｂに識別用電力が入力される。この場合、図６（ｂ）に示すように、第２の２次コイル３１ｂにて識別用電力に対応する交流電力が受電される。このため、第１受電判定の判定結果が肯定判定となり、第２受電判定が行われる。そして、第２受電判定の判定結果が肯定判定となることにより、接続状態が継続される。 Also, as shown in FIGS. 6B and 6D, a power transmission request signal is transmitted from the second power receiving communication unit 36b to the second power transmission communication unit 24b at time t34, and the second primary Identification power is input to the coil 22b. In this case, as shown in FIG. 6B, the second secondary coil 31b receives AC power corresponding to the identification power. For this reason, the determination result of the first power reception determination is an affirmative determination, and the second power reception determination is performed. Then, when the determination result of the second power reception determination is affirmative, the connection state is continued.
　以上のように、第２送電装置１１ｂは、第１受電装置１２ａと接続状態となっている場合において第２受電装置１２ｂから接続要求が行われた場合には、第２受電装置１２ｂからの接続要求を拒否する。つまり、第２送電装置１１ｂは、第１受電装置１２ａと接続状態となっている場合には、第２受電装置１２ｂと接続状態とならないよう規制されている。そして、拒否された第２受電装置１２ｂは、未接続状態の第１送電装置１１ａと接続状態となる。 As described above, when the second power transmission device 11b is connected to the first power reception device 12a and a connection request is made from the second power reception device 12b, the connection from the second power reception device 12b is performed. Reject the request. That is, the second power transmission device 11b is restricted from being connected to the second power reception device 12b when the second power transmission device 11b is connected to the first power reception device 12a. Then, the rejected second power receiving device 12b is connected to the unconnected first power transmitting device 11a.
　その後、電力伝送が行われる組み合わせでないと判定された場合、即ち第１受電判定の判定結果が否定判定である場合、接続状態が解除される。そして、第１受電装置１２ａは、第２送電装置１１ｂとは別の第１送電装置１１ａと接続状態となり、第２受電装置１２ｂは、第１送電装置１１ａとは別の第２送電装置１１ｂと接続状態となる。そして、伝送判定部４３の判定が行われる。これにより、電力伝送が行われる組み合わせが把握されるまで、接続状態となる対象送電装置を異ならせながら、接続状態の設定から継続判定部４４による継続判定までの一連の処理が実行される。 Thereafter, when it is determined that the combination is not a power transmission, that is, when the determination result of the first power reception determination is a negative determination, the connection state is released. The first power receiving device 12a is connected to the first power transmitting device 11a different from the second power transmitting device 11b, and the second power receiving device 12b is connected to the second power transmitting device 11b different from the first power transmitting device 11a. Connected. And the determination of the transmission determination part 43 is performed. As a result, a series of processes from setting the connection state to continuation determination by the continuation determination unit 44 is executed while changing the target power transmission device that is in the connection state until the combination in which power transmission is performed is grasped.
　次に図７を用いて第３のケースについて説明する。第３のケースは、第２のケースと同様に、２つの車両Ｃ１，Ｃ２がほぼ同時に駐車スペースＳ１，Ｓ２にそれぞれ進入し、第１駐車スペースＳ１に第１車両Ｃ１が配置され、第２駐車スペースＳ２に第２車両Ｃ２が配置されたものとする。 Next, the third case will be described with reference to FIG. In the third case, similar to the second case, the two vehicles C1, C2 enter the parking spaces S1, S2 almost simultaneously, the first vehicle C1 is arranged in the first parking space S1, and the second parking is performed. It is assumed that the second vehicle C2 is arranged in the space S2.
　図７に示すように、時点ｔ４１で、第１受電装置１２ａの把握部４１による把握処理が実行され、時点ｔ４２で、第２受電装置１２ｂの把握部４１による把握処理が実行される。 As shown in FIG. 7, the grasping process by the grasping unit 41 of the first power receiving device 12a is executed at the time t41, and the grasping process by the grasping unit 41 of the second power receiving device 12b is executed at the time t42.
　その後、図７（ａ）及び図７（ｄ）に示すように、時点ｔ４３で第１受電装置１２ａと第２送電装置１１ｂとが接続状態となる。また、図７（ｂ）及び図７（ｃ）に示すように、時点ｔ４４で、第２受電装置１２ｂと第１送電装置１１ａとが接続状態となる。 Thereafter, as shown in FIGS. 7A and 7D, the first power receiving device 12a and the second power transmitting device 11b are connected at time t43. Moreover, as shown in FIG.7 (b) and FIG.7 (c), the 2nd power receiving apparatus 12b and the 1st power transmission apparatus 11a will be in a connection state at the time t44.
　そして、時点ｔ４５で、第１受電通信部３６ａから第２送電通信部２４ｂに向かう送電要求信号と、第２受電通信部３６ｂから第１送電通信部２４ａに向かう送電要求信号とが同時に送信されたとする。この場合、各１次コイル２２ａ，２２ｂに識別用電力が同時に入力される。 At time t45, the power transmission request signal from the first power receiving communication unit 36a to the second power transmission communication unit 24b and the power transmission request signal from the second power receiving communication unit 36b to the first power transmission communication unit 24a are transmitted simultaneously. To do. In this case, identification power is simultaneously input to the primary coils 22a and 22b.
　この場合、２次コイル３１ａ，３１ｂには、同時に識別用電力に対応する交流電力が受電される。すると、第１受電装置１２ａとしては、当該第１受電装置１２ａと接続状態となっている第２送電装置１１ｂから交流電力を受電したと誤認するため、第１受電判定の判定結果は肯定判定となる。同様に、第２受電装置１２ｂにおける第１受電判定の判定結果は肯定判定となる。 In this case, the secondary coils 31a and 31b simultaneously receive AC power corresponding to the identification power. Then, since the first power receiving device 12a misidentifies that AC power is received from the second power transmitting device 11b connected to the first power receiving device 12a, the determination result of the first power receiving determination is an affirmative determination. Become. Similarly, the determination result of the first power reception determination in the second power receiving device 12b is affirmative.
　その後、各受電装置１２ａ，１２ｂにおいて第２受電判定が行われる。この場合、第１送電装置１１ａの固有情報２３ａａに基づいて決定される第１インターバル期間Ｔｉ１と、第２送電装置１１ｂの固有情報２３ｂｂに基づいて決定される第２インターバル期間Ｔｉ２とが異なっているため、２回目の送電要求信号の送信時点が異なっている。 Thereafter, the second power reception determination is performed in each of the power receiving apparatuses 12a and 12b. In this case, the first interval period Ti1 determined based on the specific information 23aa of the first power transmission device 11a is different from the second interval period Ti2 determined based on the specific information 23bb of the second power transmission device 11b. Therefore, the transmission time of the second power transmission request signal is different.
　詳細には、図７（ｂ）及び図７（ｃ）に示すように、１回目の識別用電力の入力が終了した時点ｔ４６から第１インターバル期間Ｔｉ１が経過した時点ｔ４７にて第２受電通信部３６ｂから第１送電通信部２４ａに向けて送電要求信号が送信され、第１の１次コイル２２ａに２回目の識別用電力が入力される。この場合、第２の２次コイル３１ｂには交流電力が受電されないため、第２受電判定の判定結果は否定判定となる。このため、時点ｔ４８にて、第２受電装置１２ｂと第１送電装置１１ａとの接続状態が解除される。 Specifically, as shown in FIGS. 7B and 7C, the second power receiving communication is performed at time t47 when the first interval period Ti1 has elapsed from time t46 when the first input of identification power is completed. A power transmission request signal is transmitted from the unit 36b to the first power transmission communication unit 24a, and the second identification power is input to the first primary coil 22a. In this case, since the AC power is not received by the second secondary coil 31b, the determination result of the second power reception determination is a negative determination. For this reason, the connection state of the 2nd power receiving apparatus 12b and the 1st power transmission apparatus 11a is cancelled | released at the time t48.
　その後、図７（ａ）及び図７（ｄ）に示すように、時点ｔ４６から第２インターバル期間Ｔｉ２が経過した時点ｔ４９にて、第１受電通信部３６ａから第２送電通信部２４ｂに向けて２回目の送電要求信号が送信され、第２の１次コイル２２ｂに２回目の識別用電力が入力される。この場合、第１の２次コイル３１ａには交流電力が受電されないため、第２受電判定の判定結果は否定判定となる。このため、時点ｔ５０にて、第１受電装置１２ａと第２送電装置１１ｂとの接続状態が解除される。 Thereafter, as shown in FIGS. 7A and 7D, at the time t49 when the second interval period Ti2 has elapsed from the time t46, the first power receiving communication unit 36a is directed to the second power transmission communication unit 24b. The second transmission request signal is transmitted, and the second identification power is input to the second primary coil 22b. In this case, since the AC power is not received by the first secondary coil 31a, the determination result of the second power reception determination is a negative determination. For this reason, the connection state of the 1st power receiving apparatus 12a and the 2nd power transmission apparatus 11b is cancelled | released in the time t50.
　インターバル期間Ｔｉ１とインターバル期間Ｔｉ２との差は第２期間Ｔ２よりも長いため、仮に１回目の識別用電力の入力開始時点（入力終了時点）が同一であった場合であっても、２回目の識別用電力の入力時間がずれる。つまり、第１の１次コイル２２ａへの識別用電力の入力が終了してから、第２の１次コイル２２ｂへの識別用電力が開始される。これにより、第１の１次コイル２２ａに識別用電力が入力される時間と、第２の１次コイル２２ｂに識別用電力が入力される時間とが一部重なることによって生じ得る第２受電判定の誤認を抑制できる。 Since the difference between the interval period Ti1 and the interval period Ti2 is longer than the second period T2, even if the input start time (input end time) of the first identification power is the same, the second time The input time of the identification power is shifted. That is, after the input of the identification power to the first primary coil 22a is completed, the identification power to the second primary coil 22b is started. As a result, the second power reception determination that can occur when the time for which the identification power is input to the first primary coil 22a and the time for which the identification power is input to the second primary coil 22b partially overlap. Can be suppressed.
　次に図８を用いて第４のケースについて説明する。第４のケースは、第２車両Ｃ２が第２駐車スペースＳ２に進入して間もなく、第１車両Ｃ１が第１駐車スペースＳ１に進入したものとする。 Next, the fourth case will be described with reference to FIG. In the fourth case, it is assumed that the first vehicle C1 enters the first parking space S1 soon after the second vehicle C2 enters the second parking space S2.
　図８に示すように、時点ｔ６１で、第２受電装置１２ｂの把握部４１による把握処理が実行され、時点ｔ６２で、第１受電装置１２ａの把握部４１による把握処理が実行される。 As shown in FIG. 8, the grasping process by the grasping unit 41 of the second power receiving apparatus 12b is executed at a time point t61, and the grasping process by the grasping part 41 of the first power receiving apparatus 12a is executed at a time point t62.
　その後、図８（ｂ）及び図８（ｄ）に示すように、時点ｔ６３にて、第２受電装置１２ｂと第２送電装置１１ｂとが接続状態となり、時点ｔ６４にて、第２受電通信部３６ｂから第２送電通信部２４ｂに向けて１回目の送電要求信号が送信される。これにより、第２の１次コイル２２ｂに対して１回目の識別用電力が入力され、第２の２次コイル３１ｂにて、識別用電力に対応する交流電力が受電される。そして、時点ｔ６５にて、１回目の識別用電力の入力が停止する。 Thereafter, as shown in FIGS. 8B and 8D, at time t63, the second power receiving device 12b and the second power transmitting device 11b are connected, and at time t64, the second power receiving communication unit. A first power transmission request signal is transmitted from 36b to the second power transmission communication unit 24b. As a result, the first identification power is input to the second primary coil 22b, and the second secondary coil 31b receives AC power corresponding to the identification power. Then, at the time t65, the input of the first identification power is stopped.
　その後、図８（ａ）及び図８（ｃ）に示すように、時点ｔ６６にて、第１受電装置１２ａと第１送電装置１１ａとが接続状態となり、時点ｔ６７にて、第１受電通信部３６ａから第１送電通信部２４ａに向けて１回目の送電要求信号が送信される。これにより、第１の１次コイル２２ａに対して１回目の識別用電力が入力され、第１の１次コイル２２ａにて、識別用電力に対応する交流電力が受電される。そして、時点ｔ６８にて、１回目の識別用電力の入力が停止する。 Thereafter, as shown in FIGS. 8A and 8C, at time t66, the first power receiving device 12a and the first power transmitting device 11a are connected, and at time t67, the first power receiving communication unit. The first power transmission request signal is transmitted from 36a toward the first power transmission communication unit 24a. Thereby, the first identification power is input to the first primary coil 22a, and the first primary coil 22a receives AC power corresponding to the identification power. Then, at the time t68, the first input of identification power is stopped.
　そして、時点ｔ６８から第１インターバル期間Ｔｉ１が経過した時点であって、時点ｔ６５から第２インターバル期間Ｔｉ２が経過した時点ｔ６９にて、各受電通信部３６ａ，３６ｂから２回目の送電要求信号が送信される。これにより、１次コイル２２ａ，２２ｂに２回目の識別用電力が同時に入力され、各２次コイル３１ａ，３１ｂによって、識別用電力に対応する交流電力が受電される。この場合、そのまま接続状態が継続され、充電用電力を用いた電力伝送処理が行われる。すなわち、１次コイル２２ａ，２２ｂに対して２回目の識別用電力が入力される時点が同一であった場合であっても、誤認は生じにくい。 Then, at the time when the first interval period Ti1 has elapsed from the time point t68 and when the second interval period Ti2 has elapsed from the time point t65, the second power transmission request signal is transmitted from each of the power receiving communication units 36a and 36b. Is done. Accordingly, the second identification power is simultaneously input to the primary coils 22a and 22b, and the AC power corresponding to the identification power is received by each of the secondary coils 31a and 31b. In this case, the connection state is continued as it is, and the power transmission process using the charging power is performed. That is, even when the second identification power is input to the primary coils 22a and 22b at the same time, misidentification is unlikely to occur.
　以上詳述した本実施形態によれば以下の優れた効果を奏する。
　（１）受電装置１２の受電コントローラ３５は、二以上の送電装置１１を把握する把握部４１を備えている。そして、非接触電力伝送システム１０は、把握部４１が複数の送電装置１１のうち二以上の送電装置１１を把握した場合には、把握部４１によって把握された二以上の送電装置１１のうち未接続状態の送電装置１１と未接続状態の受電装置１２とを、送電通信部及び受電通信部３６を介する接続が確立された接続状態に設定する接続状態設定部４２を備えている。非接触電力伝送システム１０は、接続状態となった送電装置１１と受電装置１２との間で電力伝送が行われるか否かを判定する伝送判定部４３を備えている。また、非接触電力伝送システム１０は、伝送判定部４３による判定結果が肯定判定である場合、即ち電力伝送が行われる場合には接続状態を継続し、伝送判定部４３の判定結果が否定判定である場合、即ち電力伝送が行われない場合には接続状態を解除する継続判定部４４を備えている。 According to the embodiment described in detail above, the following excellent effects are obtained.
(1) The power receiving controller 35 of the power receiving device 12 includes a grasping unit 41 that grasps two or more power transmitting devices 11. Then, when the grasping unit 41 grasps two or more power transmission devices 11 among the plurality of power transmission devices 11, the non-contact power transmission system 10 is not yet out of the two or more power transmission devices 11 grasped by the grasping unit 41. A connection state setting unit is provided for setting the connected power transmission device 11 and the unconnected power reception device 12 to a connection state in which a connection via the power transmission communication unit and the power reception communication unit is established. The non-contact power transmission system 10 includes a transmission determination unit 43 that determines whether or not power transmission is performed between the power transmission device 11 and the power reception device 12 that are in a connected state. Further, the contactless power transmission system 10 continues the connection state when the determination result by the transmission determination unit 43 is affirmative, that is, when power transmission is performed, and the determination result of the transmission determination unit 43 is negative. In some cases, that is, when power transmission is not performed, a continuation determination unit 44 for releasing the connection state is provided.
　かかる構成によれば、二以上の送電装置１１のうち１の送電装置１１と受電装置１２とが接続状態となってから、伝送判定部４３による判定が行われる。そして、伝送判定部４３により電力伝送が行われると判定された場合には、接続状態が継続される。これにより、そのまま情報のやり取りを行いながら、接続継続状態となった送電装置１１と受電装置１２との間で電力伝送を行うことができる。 According to such a configuration, the determination by the transmission determination unit 43 is performed after one of the two or more power transmission apparatuses 11 is connected to the power transmission apparatus 11 and the power reception apparatus 12. And when it determines with electric power transmission being performed by the transmission determination part 43, a connection state is continued. As a result, power can be transmitted between the power transmission device 11 and the power reception device 12 that are in the connection continuation state while exchanging information as they are.
　また、接続状態設定部４２が接続状態に設定する対象は、未接続状態の送電装置１１及び未接続状態の受電装置１２である。これにより、接続状態となった送電装置１１と受電装置１２とは、当該接続状態が解除されるまで、他の装置と接続状態となることが規制される。よって、例えば受電装置１２が二以上の送電装置１１と同時に接続状態となることに起因して、電力伝送が行われる組み合わせを把握することができないという事態を抑制できる。 Further, the targets set by the connection state setting unit 42 to the connected state are the unconnected power transmission device 11 and the unconnected power reception device 12. Thus, the power transmission device 11 and the power receiving device 12 that are in the connected state are restricted from being connected to other devices until the connection state is released. Therefore, for example, it is possible to suppress a situation in which a combination in which power transmission is performed cannot be grasped due to the power receiving device 12 being connected to two or more power transmitting devices 11 at the same time.
　特に、仮に受電装置１２が二以上の送電装置１１と重複して接続状態となり、１の受電装置１２から二以上の送電装置１１に対して送電要求信号が同時に送信されると、二以上の１次コイルに対して同時期に交流電力が入力される。この場合、二以上の１次コイルのうちいずれの１次コイルから受電しているのか把握するべく、各１次コイルに入力される交流電力の入力パターン（例えば入力時間）を異ならせる必要が生じる。すると、制御の煩雑化が懸念される。これに対して、本実施形態では、既に接続状態となっている１の送電装置１１と受電装置１２との間で電力伝送が行われるか否かを判定すればよいため、制御の容易化を図ることができる。 In particular, if the power reception device 12 is connected to two or more power transmission devices 11 and is connected to the power transmission request signal simultaneously from one power reception device 12 to two or more power transmission devices 11, two or more 1 AC power is input to the next coil at the same time. In this case, in order to grasp which primary coil is receiving power from two or more primary coils, it is necessary to change the input pattern (for example, input time) of AC power input to each primary coil. . Then, there is a concern about complicated control. On the other hand, in the present embodiment, since it is only necessary to determine whether or not power transmission is performed between the one power transmission device 11 and the power reception device 12 that are already connected, control is facilitated. Can be planned.
　（２）把握部４１は、二以上の送電装置１１のうち、受電通信部３６と無線通信が可能な送電通信部（例えば第１送電通信部２４ａ）を有し、且つ、接続継続状態以外の送電装置１１、すなわち未接続状態又は接続状態の送電装置１１を把握する。これにより、把握部４１の把握対象から、接続継続状態の送電装置１１が除外されるため、把握される送電装置１１の数を低減することができる。したがって、接続状態の設定及び伝送判定部４３による判定の回数の低減を図ることができ、電力伝送が行われる組み合わせを把握するのに要する時間の短縮化を図ることができる。 (2) The grasping unit 41 has a power transmission communication unit (for example, the first power transmission communication unit 24a) capable of wireless communication with the power reception communication unit 36 among the two or more power transmission devices 11, and other than the connection continuation state The power transmission device 11, that is, the power transmission device 11 in an unconnected state or a connected state is grasped. Thereby, since the power transmission device 11 in the connection continuation state is excluded from the grasping targets of the grasping unit 41, the number of grasped power transmission devices 11 can be reduced. Therefore, it is possible to reduce the number of determinations by the connection state setting and transmission determination unit 43, and it is possible to shorten the time required to grasp the combination in which power transmission is performed.
　なお、接続継続状態の送電装置１１は、既に伝送判定部４３による判定により別の受電装置１２と電力伝送が行われる組み合わせであると判定されたものであるため、今回の受電装置１２と電力伝送が行われる組み合わせとなり得ない。よって、把握対象から除外しても、支障はない。 Note that the power transmission device 11 in the connection continuation state has already been determined to be a combination in which power transmission is performed with another power reception device 12 based on the determination by the transmission determination unit 43, and thus the current power reception device 12 and power transmission this time. Cannot be combined. Therefore, even if it excludes from a grasp object, there is no trouble.
　これに対して、接続状態の送電装置１１は、伝送判定部４３の判定結果によっては接続状態が解除され得る。そして、当該接続状態の送電装置１１は、今回の受電装置１２と電力伝送が行われる組み合わせとなり得る。よって、上記のような接続状態の送電装置１１も把握対象に含めることによって、電力伝送が行われる組み合わせを好適に把握できる。 On the other hand, the connection state of the power transmission device 11 in the connected state can be released depending on the determination result of the transmission determination unit 43. And the power transmission apparatus 11 of the said connection state can be a combination with this power receiving apparatus 12 and electric power transmission. Therefore, the combination in which electric power transmission is performed can be suitably grasped | ascertained by also including the power transmission apparatus 11 of the above connection states in grasping | ascertainment object.
　（３）把握部４１は、応答要求信号として探索信号を送信するよう受電通信部３６を制御する。送電制御部としての送電コントローラ２３ａ，２３ｂは、接続継続状態でない状況、即ち未接続状態又は接続状態である状況において送電通信部２４ａ，２４ｂによって探索信号が受信された場合には、探索応答信号を受電通信部３６に送信するように送電通信部２４ａ，２４ｂを制御する。これに対して、送電コントローラ２３ａ，２３ｂは、接続継続状態である状況において送電通信部２４ａ，２４ｂによって探索信号が受信された場合には、探索応答信号を送信しないように送電通信部２４ａ，２４ｂを制御する。これにより、把握部４１によって把握される対象から、接続継続状態の送電装置１１が除外される。よって、比較的容易に（２）の効果を得ることができる。 (3) The grasping unit 41 controls the power receiving communication unit 36 to transmit a search signal as a response request signal. The power transmission controllers 23a and 23b serving as power transmission control units receive a search response signal when a search signal is received by the power transmission communication units 24a and 24b in a state that is not in a connection continuation state, that is, in a state that is not connected or connected. The power transmission communication units 24 a and 24 b are controlled to transmit to the power reception communication unit 36. On the other hand, when the search signal is received by the power transmission communication units 24a and 24b in the situation where the power transmission controllers 23a and 23b are in the connection continuation state, the power transmission communication units 24a and 24b do not transmit the search response signal. To control. Thereby, the power transmission apparatus 11 in the connection continuation state is excluded from the objects grasped by the grasping unit 41. Therefore, the effect (2) can be obtained relatively easily.
　（４）接続状態設定部４２は、継続判定部４４により接続状態が解除された場合には、接続状態が解除された送電装置１１（例えば第１送電装置１１ａ）とは別の未接続状態の送電装置１１（例えば第２送電装置１１ｂ）と未接続状態の受電装置１２とを接続状態に設定する。そして、新たに接続状態に設定された送電装置１１及び受電装置１２を対象とする伝送判定部４３による判定、及び、継続判定部４４による判定が行われる。これにより、電力伝送が行われる組み合わせが把握されるまで、伝送判定部４３及び継続判定部４４による判定が順次行われるため、電力伝送が行われる組み合わせを好適に把握できる。 (4) When the connection state is canceled by the continuation determination unit 44, the connection state setting unit 42 is in an unconnected state different from the power transmission device 11 (for example, the first power transmission device 11a) whose connection state has been canceled. The power transmission device 11 (for example, the second power transmission device 11b) and the unconnected power receiving device 12 are set to the connected state. Then, the determination by the transmission determination unit 43 and the determination by the continuation determination unit 44 for the power transmission device 11 and the power reception device 12 newly set in the connection state are performed. Thereby, since the determination by the transmission determination unit 43 and the continuation determination unit 44 is sequentially performed until the combination in which power transmission is performed is determined, the combination in which power transmission is performed can be appropriately determined.
　（５）伝送判定部４３は、接続状態の送電装置１１（例えば第１送電装置１１ａ）の１次コイル（例えば第１の１次コイル２２ａ）に対して、識別用電力が第１期間Ｔ１に亘って入力されるように接続状態の送電装置１１を制御する。また、伝送判定部４３は、識別用電力が１次コイルに入力されている場合に２次コイル３１によって交流電力が受電されているか否かを判定する第１受電判定を行う。そして、伝送判定部４３は、第１受電判定の判定結果が肯定判定であった場合に、再度、接続状態の送電装置１１の１次コイルに対して識別用電力が第２期間Ｔ２に亘って入力されるように接続状態の送電装置１１を制御し、２次コイル３１によって交流電力が受電されているか否かを判定する第２受電判定を行う。これにより、検知部３４の誤検知によって第１受電判定の判定結果が誤って肯定判定となった場合であっても、第２受電判定の判定結果は否定判定となり得る。よって、伝送判定部４３の判定精度の向上を図ることができる。 (5) The transmission determination unit 43 receives the identification power during the first period T1 for the primary coil (for example, the first primary coil 22a) of the connected power transmission device 11 (for example, the first power transmission device 11a). The connected power transmission apparatus 11 is controlled so as to be input over the entire network. Moreover, the transmission determination part 43 performs the 1st power reception determination which determines whether alternating current power is received by the secondary coil 31, when the electric power for identification is input into the primary coil. Then, when the determination result of the first power reception determination is an affirmative determination, the transmission determination unit 43 again supplies the identification power to the primary coil of the connected power transmission device 11 over the second period T2. The connected power transmission device 11 is controlled so as to be input, and a second power reception determination is performed to determine whether or not AC power is received by the secondary coil 31. Thereby, even if the determination result of the first power reception determination is erroneously affirmed due to erroneous detection of the detection unit 34, the determination result of the second power reception determination can be a negative determination. Therefore, the determination accuracy of the transmission determination unit 43 can be improved.
　（６）１回目の識別用電力の入力終了時点から、２回目の識別用電力の入力開始時点までのインターバル期間Ｔｉ１，Ｔｉ２は、複数の送電装置１１ａ，１１ｂごとに異なっている。これにより、第３のケースにて示すように、仮に２つの１次コイル２２ａ，２２ｂに対して同時に１回目の識別用電力が入力されることに起因して、第１受電判定の判定結果が誤って肯定判定となった場合であっても、２回目の識別用電力の入力開始時点が異なるため、第２受電判定の判定結果が否定判定となり得る。よって、伝送判定部４３の判定精度の向上を図ることができる。 (6) Interval periods Ti1 and Ti2 from the end of the first identification power input to the second identification power input start time differ for each of the plurality of power transmission devices 11a and 11b. Accordingly, as shown in the third case, the determination result of the first power reception determination is caused by the fact that the first identification power is simultaneously input to the two primary coils 22a and 22b. Even when the determination is erroneously affirmative, the determination result of the second power reception determination can be a negative determination because the input start time of the second identification power is different. Therefore, the determination accuracy of the transmission determination unit 43 can be improved.
　（７）特に、１回目の識別用電力の入力開始時点から２回目の識別用電力の入力開始時点までの期間を異ならせるために、第１期間Ｔ１ではなくインターバル期間Ｔｉ１，Ｔｉ２を異ならせる構成が採用されている。これにより、第１期間Ｔ１を異ならせるために第１期間Ｔ１が長くなることを抑制できる。よって、第１受電判定に要する時間が長くなったり、無駄な電力消費が大きくなったりすることを抑制できる。 (7) Particularly, in order to make the period from the input start time of the first identification power to the input start time of the second identification power different, the interval periods Ti1 and Ti2 are made different from each other in the first period T1. Is adopted. Thereby, in order to make 1st period T1 different, it can suppress that 1st period T1 becomes long. Therefore, it is possible to suppress an increase in time required for the first power reception determination and an increase in useless power consumption.
　（８）インターバル期間Ｔｉ１，Ｔｉ２は、接続状態に設定された送電装置１１ａ，１１ｂの固有情報２３ａａ，２３ｂｂに基づいて決定されている。これにより、送電装置１１ａ，１１ｂごとにインターバル期間Ｔｉ１，Ｔｉ２を容易に異ならせることができる。 (8) The interval periods Ti1 and Ti2 are determined based on the specific information 23aa and 23bb of the power transmission apparatuses 11a and 11b set to the connected state. Thereby, interval period Ti1, Ti2 can be easily varied for every power transmission apparatus 11a, 11b.
　（９）第１送電装置１１ａの第１インターバル期間Ｔｉ１と、第２送電装置１１ｂの第２インターバル期間Ｔｉ２との差は、第２期間Ｔ２よりも長い。これにより、仮に１次コイル２２ａ，２２ｂに対する１回目の識別用電力の入力終了時点が同一であっても、１次コイル２２ａ，２２ｂに対して２回目の識別用電力が入力される時間が重ならないようになっている。よって、１次コイル２２ａ，２２ｂに対して２回目の識別用電力が入力されている時間が重なることに起因する第２受電判定の誤判定を抑制できる。 (9) The difference between the first interval period Ti1 of the first power transmission device 11a and the second interval period Ti2 of the second power transmission device 11b is longer than the second period T2. As a result, even if the input end time of the first identification power to the primary coils 22a and 22b is the same, the time when the second identification power is input to the primary coils 22a and 22b is overlapped. It is supposed not to be. Therefore, it is possible to suppress erroneous determination of the second power reception determination due to the overlap of the time when the second identification power is input to the primary coils 22a and 22b.
　また、上記構成であれば、第２受電判定としては、受電電力を検知した時点を考慮する必要がなく、単純に検知されたか否かを判定すればよい。よって、容易に第２受電判定を行うことができる。 Also, with the above configuration, as the second power reception determination, it is not necessary to consider the time when the received power is detected, and it is only necessary to determine whether or not the power reception is detected. Therefore, the second power reception determination can be easily performed.
　（１０）非接触電力伝送システム１０は、継続判定部４４によって接続状態を継続することが判定された場合に、予め定められた終了条件が成立するまで、接続継続状態の送電装置１１の１次コイル（例えば第１の１次コイル２２ａ）に、識別用電力よりも電力値が大きい送電用電力（充電用電力）が入力されるように構成されている。これにより、電力伝送が行われる組み合わせでないにも関わらず、充電用電力が１次コイルに入力されることが回避されている。よって、無駄な電力損失を回避することができる。 (10) When the continuation determination unit 44 determines that the connection state is to be continued, the non-contact power transmission system 10 performs the primary of the power transmission device 11 in the connection continuation state until a predetermined termination condition is satisfied. The coil (for example, the first primary coil 22a) is configured to receive transmission power (charging power) having a power value larger than that of the identification power. Thereby, although it is not the combination by which electric power transmission is performed, it is avoided that the electric power for charging is input into a primary coil. Therefore, useless power loss can be avoided.
　（１１）接続状態設定部４２は、未接続状態の送電装置１１が見つかるまで、即ち接続応答信号が受信されるまで、把握部４１によって把握された二以上の送電装置１１に対して順次接続要求を行う。これにより、接続状態の送電装置１１の接続状態が解除されるのを待つことなく、接続状態を設定でき、伝送判定部４３による判定を行うことができる。これにより、電力伝送が行われる組み合わせを早期に把握できる。 (11) The connection state setting unit 42 sequentially requests connection to two or more power transmission devices 11 grasped by the grasping unit 41 until an unconnected power transmission device 11 is found, that is, until a connection response signal is received. I do. Accordingly, the connection state can be set without waiting for the connection state of the power transmission device 11 in the connection state to be released, and the determination by the transmission determination unit 43 can be performed. Thereby, the combination by which electric power transmission is performed can be grasped | ascertained early.
　なお、上記実施形態は以下のように変更してもよい。
　○　送電コントローラ２３ａ，２３ｂは、接続継続状態でない状況においてビーコンが定期的に発信され、接続継続状態である状況においてビーコンが定期的に発信されないように送電通信部２４ａ，２４ｂを制御する構成であってもよい。この場合、受電コントローラ３５の把握部４１は、受電通信部３６によってビーコンが受信されたことに基づいて、送電装置１１を把握する構成であるとよい。これにより、把握部４１は、探索信号の送信を行うことなく、送電装置１１を把握できる。 In addition, you may change the said embodiment as follows.
The power transmission controllers 23a and 23b are configured to control the power transmission communication units 24a and 24b so that a beacon is periodically transmitted in a situation where the connection is not continued and a beacon is not periodically transmitted in a situation where the connection is continued. May be. In this case, the grasping unit 41 of the power receiving controller 35 may be configured to grasp the power transmission device 11 based on the reception of the beacon by the power receiving communication unit 36. Thereby, the grasping unit 41 can grasp the power transmission device 11 without transmitting a search signal.
　○　接続状態設定部４２は、未接続状態の送電装置１１が二以上存在する場合には、探索応答信号の受信強度が高いものから優先的に接続要求を行う構成であってもよい。これにより、受電装置１２に対して近くに存在する送電装置１１から順に接続要求を行うことができる。 The connection state setting unit 42 may be configured to make a connection request preferentially from the one with the high reception strength of the search response signal when there are two or more unconnected power transmission apparatuses 11. As a result, connection requests can be made in order from the power transmitting device 11 that is present nearby to the power receiving device 12.
　○　送電装置１１は、接続状態から接続継続状態に移行した後に、当該接続継続状態に係る受電装置１２とは別の受電装置１２から接続要求が行われた場合、接続を拒否するとともに接続継続状態となった旨の通知を行ってもよい。この場合、上記別の受電装置１２は、上記通知を受信した場合に、当該通知を行った送電装置１１を、接続要求を行う対象から除外してもよい。これにより、無駄な接続要求を回避できる。 ○ When the power transmission device 11 makes a connection request from a power receiving device 12 different from the power receiving device 12 related to the connection continuation state after shifting from the connection state to the connection continuation state, the power transmission device 11 rejects the connection and the connection continuation state You may notify that it became. In this case, when the other power receiving apparatus 12 receives the notification, the power transmitting apparatus 11 that has performed the notification may be excluded from the targets for which the connection request is made. Thereby, useless connection requests can be avoided.
　○　送電コントローラ２３ａ，２３ｂが、接続状態設定部４２、伝送判定部４３及び継続判定部４４を備えている構成であってもよい。この場合、受電コントローラ３５は、受電通信部３６を用いて、各種判定に必要な情報（例えば検知部３４の検知結果）を送電コントローラ２３ａ，２３ｂに送信するとよい。各種要求信号と当該各種要求信号に応答する各種応答信号とのやり取りで接続状態の設定、各種判定が行われることに着目すれば、送電コントローラ２３ａ，２３ｂと受電コントローラ３５とが、協同して、接続状態設定部４２、伝送判定部４３及び継続判定部４４を備えているとも言える。 O The power transmission controllers 23a and 23b may include a connection state setting unit 42, a transmission determination unit 43, and a continuation determination unit 44. In this case, the power receiving controller 35 may transmit information necessary for various determinations (for example, detection results of the detecting unit 34) to the power transmitting controllers 23a and 23b using the power receiving communication unit 36. If attention is paid to the setting of the connection state and various determinations by exchanging various request signals and various response signals in response to the various request signals, the power transmission controllers 23a and 23b and the power reception controller 35 cooperate with each other. It can be said that a connection state setting unit 42, a transmission determination unit 43, and a continuation determination unit 44 are provided.
　○　１回目の識別用電力（第１識別用電力）の電力値と、２回目の識別用電力（第２識別用電力）の電力値とは、同一であってもよいし、異なっていてもよい。また、識別用電力の電力値は、充電用電力の電力値よりも小さかったが、これに限られず、同一であってもよい。 ○ The power value of the first identification power (first identification power) and the second identification power (second identification power) may be the same or different. Good. In addition, the power value of the identification power is smaller than the power value of the charging power, but is not limited thereto, and may be the same.
　○　第１期間Ｔ１と第２期間Ｔ２とは、同一であってもよいし異なっていてもよい。
　○　第１インターバル期間Ｔｉ１と第２インターバル期間Ｔｉ２との差は第２期間Ｔ２未満であってもよい。この場合であっても、２回目の識別用電力の入力開始時点が異なる。よって、２回目の識別用電力の入力開始時点と、受電電力の検知開始タイミグとを照合することにより、正しい組み合わせか否かを判定するとよい。 The first period T1 and the second period T2 may be the same or different.
The difference between the first interval period Ti1 and the second interval period Ti2 may be less than the second period T2. Even in this case, the input start time of the second identification power is different. Therefore, it is preferable to determine whether or not the combination is correct by comparing the input start time of the second identification power with the detection start timing of the received power.
　○　送電装置１１ａ，１１ｂの固有情報２３ａａ，２３ｂｂに代えて（又は加えて）、受電装置１２ａ，１２ｂの固有情報に基づいてインターバル期間Ｔｉ１，Ｔｉ２を決定してもよい。 ○ Instead of (or in addition to) the specific information 23aa and 23bb of the power transmission devices 11a and 11b, the interval periods Ti1 and Ti2 may be determined based on the specific information of the power reception devices 12a and 12b.
　○　検知部３４は、２次コイル３１によって受電された交流電力を検知するものであったが、これに限られず、当該交流電力が変換された直流電力を検知する構成であってもよい。 ○ The detection unit 34 detects the AC power received by the secondary coil 31, but is not limited thereto, and may be configured to detect the DC power converted from the AC power.
　○　実施形態では、１回目の識別用電力は第１期間Ｔ１に亘って入力された場合に停止する構成であったが、これに限られず、受電通信部３６から停止要求信号が受信されるまで、識別用電力の入力を継続してもよい。この場合、受電コントローラ３５は、送電要求信号が送信されてから所定期間に亘って交流電力が受電されなかった場合に停止要求信号が送信されるよう受電通信部３６を制御するとよい。 ○ In the embodiment, the first identification power is configured to stop when it is input for the first period T1. However, the present invention is not limited to this. Until a stop request signal is received from the power receiving communication unit 36 The input of the identification power may be continued. In this case, the power reception controller 35 may control the power reception communication unit 36 so that the stop request signal is transmitted when AC power is not received for a predetermined period after the transmission request signal is transmitted.
　○　各インターバル期間Ｔｉ１，Ｔｉ２を異ならせる構成に代えて、インターバル期間が各送電装置１１に関わらず同一であって、第１期間Ｔ１が送電装置１１ごとに異なっている構成であってもよい。この場合であっても、１回目の識別用電力の入力開始時点が同時であっても、２回目の識別用電力の入力開始時点は異なるため、伝送判定部４３の誤判定を抑制できる。要は、第１識別用電力の入力開始時点から、第２識別用電力の入力開始時点までの期間が、送電装置１１ごとに異なっていればよい。 ○ Instead of the configuration in which the interval periods Ti1 and Ti2 are made different, the interval period may be the same regardless of each power transmission device 11, and the first period T1 may be different for each power transmission device 11. Even in this case, even when the first identification power input start time is the same, the second identification power input start time is different, so that erroneous determination of the transmission determination unit 43 can be suppressed. In short, the period from the input start time of the first identification power to the input start time of the second identification power may be different for each power transmission device 11.
　○　なお、上記第１期間Ｔ１を異ならせる構成においては、当該第１期間Ｔ１を固有情報２３ａａ，２３ｂｂに基づいて決定するとよい。また、第１送電装置１１ａに対応する第１期間Ｔ１と、第２送電装置１１ｂに対応する第１期間Ｔ１との差を第２期間Ｔ２よりも長く設定するとよい。 In addition, in the structure which makes the said 1st period T1 differ, it is good to determine the said 1st period T1 based on specific information 23aa and 23bb. In addition, the difference between the first period T1 corresponding to the first power transmission device 11a and the first period T1 corresponding to the second power transmission device 11b may be set longer than the second period T2.
　○　第１の１次コイル２２ａを含む共振回路（又は第２の１次コイル２２ｂを含む共振回路）の共振周波数と、２次コイル３１を含む共振回路の共振周波数とは、電力伝送が可能な範囲内で異なっていてもよい。 ○ The resonance frequency of the resonance circuit including the first primary coil 22a (or the resonance circuit including the second primary coil 22b) and the resonance frequency of the resonance circuit including the secondary coil 31 can transmit power. It may be different within the range.
　○　１次コンデンサ及び２次コンデンサを省略してもよい。この場合、各１次コイル２２ａ，２２ｂ及び２次コイル３１の寄生容量を用いて磁場共鳴させてもよい。
　○　２次コイル３１によって受電された交流電力を、車両用バッテリ３３の充電以外の用途に用いてもよい。 ○ Primary and secondary capacitors may be omitted. In this case, magnetic field resonance may be performed using parasitic capacitances of the primary coils 22 a and 22 b and the secondary coil 31.
The AC power received by the secondary coil 31 may be used for purposes other than charging the vehicle battery 33.
　○　受電装置１２の搭載対象は任意であり、例えばロボットや電動車いす等に搭載されていてもよい。
　○　送電装置１１の数は２つに限られず任意である。 O The power receiving device 12 can be mounted on any object, and may be mounted on, for example, a robot or an electric wheelchair.
O The number of power transmission devices 11 is not limited to two and is arbitrary.
　○　第１送電装置１１ａは、第１の１次コイル２２ａ及び１次コンデンサからなる共振回路と、その共振回路と電磁誘導で結合する１次結合コイルとを有する構成であってもよい。第２送電装置１１ｂについても同様である。また、受電装置１２は、２次コイル３１及び２次コンデンサからなる共振回路と、その共振回路と電磁誘導で結合する２次結合コイルとを有する構成であってもよい。 The first power transmission device 11a may have a configuration including a resonance circuit including the first primary coil 22a and a primary capacitor, and a primary coupling coil coupled to the resonance circuit by electromagnetic induction. The same applies to the second power transmission device 11b. The power receiving device 12 may have a configuration including a resonance circuit including the secondary coil 31 and a secondary capacitor, and a secondary coupling coil coupled to the resonance circuit by electromagnetic induction.
　○　把握部４１は、未接続状態又は接続状態の送電装置１１を把握する構成であったが、これに限られず、未接続状態の送電装置１１のみを把握する構成であってもよい。詳細には、送電コントローラ２３ａ，２３ｂは、未接続状態である状況において送電通信部２４ａ，２４ｂによって探索信号が受信された場合には、探索応答信号を受電通信部３６に送信するように送電通信部２４ａ，２４ｂを制御する。これに対して、送電コントローラ２３ａ，２３ｂは、接続状態又は接続継続状態である状況において送電通信部２４ａ，２４ｂによって探索信号が受信された場合には、探索応答信号を送信しないように送電通信部２４ａ，２４ｂを制御してもよい。これにより、未接続状態の送電装置１１のみが把握部４１によって把握される。 ○ The grasping unit 41 is configured to grasp the unconnected or connected power transmission device 11, but is not limited thereto, and may be configured to grasp only the unconnected power transmission device 11. Specifically, the power transmission controllers 23a and 23b transmit power transmission communication so as to transmit a search response signal to the power receiving communication unit 36 when a search signal is received by the power transmission communication units 24a and 24b in a state of being unconnected. The units 24a and 24b are controlled. On the other hand, the power transmission controllers 23a and 23b are configured so as not to transmit the search response signal when the search signal is received by the power transmission communication units 24a and 24b in the connection state or the connection continuation state. You may control 24a, 24b. Thereby, only the unconnected power transmission device 11 is grasped by the grasping unit 41.
　要は、把握部４１は、把握部４１によって把握された二以上の送電装置１１のうち、受電通信部３６と無線通信が可能な送電通信部を有し、且つ、接続継続状態を除く少なくとも未接続状態のものを把握するとよい。換言すれば、把握部４１の把握対象から少なくとも接続継続状態が除外されていればよい。また、送電コントローラ２３ａ，２３ｂは、接続継続状態を除く少なくとも未接続状態である状況において送電通信部２４ａ，２４ｂにて探索信号が受信された場合には、送電通信部２４ａ，２４ｂから探索応答信号を受電通信部３６に送信するように送電通信部２４ａ，２４ｂを制御すればよい。 In short, the grasping unit 41 has a power transmission communication unit that can wirelessly communicate with the power receiving communication unit 36 among the two or more power transmission devices 11 grasped by the grasping unit 41, and at least the connection continuation state is excluded. It is good to know what is connected. In other words, it is sufficient that at least the connection continuation state is excluded from the grasping targets of the grasping unit 41. In addition, the power transmission controllers 23a and 23b receive search response signals from the power transmission communication units 24a and 24b when a search signal is received by the power transmission communication units 24a and 24b in a state of at least an unconnected state other than the connection continuation state. The power transmission communication units 24a and 24b may be controlled so as to be transmitted to the power reception communication unit 36.
　○　第２受電判定を省略してもよい。伝送判定部４３は、接続状態の送電装置１１の１次コイルに対して識別用電力が入力されるように上記接続状態の送電装置１１を制御し、識別用電力が１次コイルに入力されている場合に２次コイル３１によって交流電力が受電されているか否かの受電判定を行ってもよい。この場合、伝送判定部４３は、２次コイル３１によって交流電力が受電されている場合には、電力伝送が行われると判定し、２次コイル３１によって交流電力が受電されていない場合には、電力伝送が行われないと判定してもよい。かかる構成によれば、伝送判定部４３の判定に要する時間を短縮できる。 ○ The second power reception determination may be omitted. The transmission determination unit 43 controls the connected power transmission device 11 so that the identification power is input to the primary coil of the connected power transmission device 11, and the identification power is input to the primary coil. If the AC power is received by the secondary coil 31, the power reception determination may be performed. In this case, the transmission determination unit 43 determines that power transmission is performed when AC power is received by the secondary coil 31, and when AC power is not received by the secondary coil 31, It may be determined that power transmission is not performed. According to this configuration, the time required for determination by the transmission determination unit 43 can be shortened.

Claims (11)

  1. 　交流電力が入力される１次コイル、及び、無線通信を行う送電通信部をそれぞれ有する複数の送電装置と、
    　前記１次コイルに入力される前記交流電力を非接触で受電可能な２次コイル、無線通信を行う受電通信部、及び前記送電装置を把握する把握部を有する受電装置と、
    　前記把握部が前記複数の送電装置のうち二以上の送電装置を把握した場合には、前記把握部によって把握された前記二以上の送電装置のうち１の送電装置と前記受電装置とを、前記送電通信部及び前記受電通信部を介する接続が確立された接続状態に設定する接続状態設定部と、
    　前記接続状態となった前記送電装置及び前記受電装置間で電力伝送が行われるか否かを判定する伝送判定部と、
    　前記伝送判定部により前記電力伝送が行われると判定された場合には前記接続状態を継続する一方、前記伝送判定部により前記電力伝送が行われないと判定された場合には前記接続状態を解除する継続判定部と、
    を備え、
    　前記継続判定部によって前記接続状態を継続することが判定された状態を接続継続状態と定義し、前記接続状態でなく、且つ、前記接続継続状態でない状態を未接続状態と定義すると、
    　前記接続状態設定部は、前記１の送電装置として前記未接続状態の送電装置と、前記受電装置とを、前記接続状態に設定するように構成され、
    　前記把握部は、前記二以上の送電装置のうち、前記受電通信部と無線通信が可能な前記送電通信部を有し、且つ、前記接続継続状態を除く少なくとも前記未接続状態の送電装置を把握する、非接触電力伝送システム。     A plurality of power transmission devices each having a primary coil to which AC power is input and a power transmission communication unit that performs wireless communication;
    A secondary coil capable of receiving the AC power input to the primary coil in a contactless manner, a power receiving communication unit for performing wireless communication, and a power receiving device having a grasping unit for grasping the power transmitting device;
    When the grasping unit grasps two or more power transmission devices among the plurality of power transmission devices, the power transmission device and the power receiving device of one of the two or more power transmission devices grasped by the grasping unit, A connection state setting unit that sets the connection state established through the power transmission communication unit and the power reception communication unit; and
    A transmission determination unit that determines whether or not power transmission is performed between the power transmission device and the power reception device in the connected state;
    When the transmission determination unit determines that the power transmission is performed, the connection state is continued. On the other hand, when the transmission determination unit determines that the power transmission is not performed, the connection state is canceled. A continuation determination unit to perform,
    With
    When the state determined to continue the connection state by the continuation determination unit is defined as a connection continuation state, and not a connection state and a state that is not the connection continuation state is defined as an unconnected state,
    The connection state setting unit is configured to set the unconnected power transmission device and the power receiving device as the first power transmission device to the connection state,
    The grasping unit has the power transmission communication unit capable of wireless communication with the power receiving communication unit among the two or more power transmission devices, and grasps at least the unconnected power transmission device excluding the connection continuation state. A contactless power transmission system.
  2. 　前記把握部は、前記二以上の送電装置のうち、前記未接続状態又は前記接続状態で、且つ、前記受電通信部と無線通信が可能な前記送電通信部を有する送電装置を把握する請求項１に記載の非接触電力伝送システム。 The said grasping | ascertainment part grasps | ascertains the power transmission apparatus which has the said power transmission communication part which can be wirelessly communicated with the said power receiving communication part among the said two or more power transmission apparatuses in the said unconnected state or the said connection state. The contactless power transmission system described in 1.
  3. 　前記把握部は、予め定められた応答要求信号を送信するよう前記受電通信部を制御するように構成され、
    　前記送電装置は、前記接続継続状態を除く少なくとも前記未接続状態である状況において前記送電通信部が前記応答要求信号を受信した場合には、前記送電通信部から応答信号を前記受電通信部に送信し、前記接続継続状態である状況において前記送電通信部が前記応答要求信号を受信した場合には、前記送電通信部から前記応答信号を前記受電通信部に送信しないよう前記送電通信部を制御する送電制御部を備え、
    　前記把握部は、前記受電通信部によって受信された前記応答信号に基づいて、前記二以上の送電装置のうち、前記受電通信部と無線通信が可能な前記送電通信部を有し、且つ、前記接続継続状態を除く少なくとも前記未接続状態の送電装置を把握する請求項１又は請求項２に記載の非接触電力伝送システム。     The grasping unit is configured to control the power receiving communication unit to transmit a predetermined response request signal;
    The power transmission device transmits a response signal from the power transmission communication unit to the power reception communication unit when the power transmission communication unit receives the response request signal in a state of at least the unconnected state excluding the connection continuation state Then, when the power transmission communication unit receives the response request signal in the connection continuation state, the power transmission communication unit is controlled not to transmit the response signal from the power transmission communication unit to the power reception communication unit. Equipped with a power transmission control unit,
    The grasping unit has the power transmission communication unit capable of wireless communication with the power reception communication unit among the two or more power transmission devices based on the response signal received by the power reception communication unit, and the The non-contact power transmission system according to claim 1 or 2, wherein at least the unconnected power transmission device other than the connection continuation state is grasped.
  4. 　前記接続状態設定部は、前記継続判定部により前記接続状態が解除された場合には、前記接続状態が解除された送電装置とは別の前記未接続状態の送電装置と前記受電装置とを前記接続状態に設定する請求項１～３のうちいずれか一項に記載の非接触電力伝送システム。 The connection state setting unit, when the connection state is canceled by the continuation determination unit, the power transmission device in the unconnected state and the power reception device different from the power transmission device in which the connection state is canceled The contactless power transmission system according to any one of claims 1 to 3, wherein the connection state is set.
  5. 　前記伝送判定部は、
    　前記接続状態の送電装置の前記１次コイルに対して、前記交流電力として第１識別用電力が第１期間に亘って入力されるように前記接続状態の送電装置を制御し、前記第１識別用電力が前記１次コイルに入力されている場合に前記２次コイルが交流電力を受電しているか否かを判定する第１受電判定と、
    　前記第１受電判定により前記２次コイルが交流電力を受電していると判定された場合に、再度、前記接続状態の送電装置の前記１次コイルに対して、前記交流電力として第２識別用電力が第２期間に亘って入力されるように前記接続状態の送電装置を制御し、前記第２識別用電力が前記１次コイルに入力されている場合に前記２次コイルが交流電力を受電しているか否かを判定する第２受電判定と、
    を行うものであり、
    　前記第２受電判定により前記２次コイルが交流電力を受電していると判定された場合には、前記電力伝送が行われると判定し、前記第２受電判定により前記２次コイルが交流電力を受電していないと判定された場合には、前記電力伝送が行われないと判定する請求項１～４のうちいずれか一項に記載の非接触電力伝送システム。     The transmission determination unit
    The first identification is controlled by controlling the connected power transmission device so that the first identification power is input as the AC power over the first period to the primary coil of the connected power transmission device. A first power reception determination for determining whether or not the secondary coil is receiving AC power when power is input to the primary coil;
    When it is determined by the first power reception determination that the secondary coil is receiving AC power, again for the second identification as the AC power for the primary coil of the connected power transmission device. The connected power transmission device is controlled so that power is input over a second period, and the secondary coil receives AC power when the second identification power is input to the primary coil. A second power reception determination for determining whether or not
    Is what
    When it is determined by the second power reception determination that the secondary coil is receiving AC power, it is determined that the power transmission is performed, and the secondary coil receives AC power by the second power reception determination. The contactless power transmission system according to any one of claims 1 to 4, wherein when it is determined that no power is received, the power transmission is determined not to be performed.
  6. 　前記第１識別用電力の入力開始時点から、前記第２識別用電力の入力開始時点までの期間は、前記送電装置ごとに異なっている請求項５に記載の非接触電力伝送システム。 The contactless power transmission system according to claim 5, wherein a period from the input start time of the first identification power to the input start time of the second identification power is different for each power transmission device.
  7. 　前記第１期間は、前記複数の送電装置において同一であり、前記第１識別用電力の入力終了時点から、前記第２識別用電力の入力開始時点までのインターバル期間は、前記送電装置ごとに異なっている請求項６に記載の非接触電力伝送システム。 The first period is the same in the plurality of power transmission devices, and an interval period from the input end time of the first identification power to the input start time of the second identification power is different for each power transmission device. The contactless power transmission system according to claim 6.
  8. 　前記インターバル期間は、前記送電装置の固有情報に基づいて決定されている請求項７に記載の非接触電力伝送システム。 The contactless power transmission system according to claim 7, wherein the interval period is determined based on unique information of the power transmission device.
  9. 　前記伝送判定部は、前記接続状態の送電装置の前記１次コイルに対して、前記交流電力として識別用電力が入力されるように前記接続状態の送電装置を制御し、前記識別用電力が前記１次コイルに入力されている場合に前記２次コイルが交流電力を受電しているか否かを判定する受電判定を行うものであって、
    　前記伝送判定部は、前記受電判定により前記２次コイルが交流電力を受電していると判定された場合には、前記電力伝送が行われると判定し、前記受電判定により前記２次コイルが交流電力を受電していないと判定された場合には、前記電力伝送が行われないと判定する請求項１～４のうちいずれか一項に記載の非接触電力伝送システム。     The transmission determination unit controls the connected power transmission device so that identification power is input as the AC power to the primary coil of the connected power transmission device, and the identification power is A power reception determination for determining whether or not the secondary coil receives AC power when being input to the primary coil;
    The transmission determination unit determines that the power transmission is performed when it is determined by the power reception determination that the secondary coil is receiving AC power, and the secondary coil is AC by the power reception determination. The contactless power transmission system according to any one of claims 1 to 4, wherein when it is determined that power is not received, the power transmission is determined not to be performed.
  10. 　前記非接触電力伝送システムは、前記継続判定部によって前記接続状態を継続すると判定された場合に、予め定められた終了条件が成立するまで前記接続継続状態の送電装置の前記１次コイルに、前記交流電力として送電用電力が入力されるように構成されている請求項８又は請求項９に記載の非接触電力伝送システム。 When the non-contact power transmission system determines that the connection state is to be continued by the continuation determination unit, the primary coil of the power transmission apparatus in the connection continuation state until the predetermined termination condition is satisfied, The contactless power transmission system according to claim 8 or 9, wherein power for transmission is input as AC power.
  11. 　交流電力が入力される１次コイル、及び、無線通信を行う送電通信部を有する送電装置から非接触で交流電力を受電可能な受電装置において、
    　前記１次コイルに入力される前記交流電力を受電可能な２次コイルと、
    　無線通信を行う受電通信部と、
    　前記送電装置を把握する把握部と、
    　前記把握部が前記複数の送電装置のうち二以上の送電装置を把握した場合には、前記把握部によって把握された前記二以上の送電装置のうち１の送電装置と前記受電装置とを、前記送電通信部及び前記受電通信部を介する接続が確立された接続状態に設定する接続状態設定部と、
    　前記接続状態となった前記送電装置及び前記受電装置間で電力伝送が行われるか否かを判定する伝送判定部と、
    　前記伝送判定部により前記電力伝送が行われると判定された場合には前記接続状態を継続する一方、前記伝送判定部により前記電力伝送が行われないと判定された場合には前記接続状態を解除する継続判定部と、
    を備え、
    　前記継続判定部によって前記接続状態を継続することが判定された状態を接続継続状態と定義し、前記接続状態でなく、且つ、前記接続継続状態でない状態を未接続状態と定義すると、
    　前記接続状態設定部は、前記受電装置と、前記１の送電装置としての前記未接続状態の送電装置とを、前記接続状態に設定するものであり、
    　前記把握部は、前記二以上の送電装置のうち、前記受電通信部と無線通信が可能な前記送電通信部を有し、且つ、前記接続継続状態を除く少なくとも前記未接続状態の送電装置を把握する受電装置。     In a power receiving device capable of receiving AC power in a non-contact manner from a power transmission device having a primary coil to which AC power is input and a power transmission communication unit that performs wireless communication,
    A secondary coil capable of receiving the AC power input to the primary coil;
    A power receiving communication unit for performing wireless communication;
    A grasping unit for grasping the power transmission device;
    When the grasping unit grasps two or more power transmission devices among the plurality of power transmission devices, the power transmission device and the power receiving device of one of the two or more power transmission devices grasped by the grasping unit, A connection state setting unit that sets the connection state established through the power transmission communication unit and the power reception communication unit; and
    A transmission determination unit that determines whether or not power transmission is performed between the power transmission device and the power reception device in the connected state;
    When the transmission determination unit determines that the power transmission is performed, the connection state is continued. On the other hand, when the transmission determination unit determines that the power transmission is not performed, the connection state is canceled. A continuation determination unit to perform,
    With
    When the state determined to continue the connection state by the continuation determination unit is defined as a connection continuation state, and not a connection state and a state that is not the connection continuation state is defined as an unconnected state,
    The connection state setting unit sets the power reception device and the unconnected power transmission device as the first power transmission device to the connection state,
    The grasping unit has the power transmission communication unit capable of wireless communication with the power receiving communication unit among the two or more power transmission devices, and grasps at least the unconnected power transmission device excluding the connection continuation state. Power receiving device.
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