WO2013035190A1 - 非接触給電システム、及び非接触給電方法 - Google Patents
非接触給電システム、及び非接触給電方法 Download PDFInfo
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- WO2013035190A1 WO2013035190A1 PCT/JP2011/070564 JP2011070564W WO2013035190A1 WO 2013035190 A1 WO2013035190 A1 WO 2013035190A1 JP 2011070564 W JP2011070564 W JP 2011070564W WO 2013035190 A1 WO2013035190 A1 WO 2013035190A1
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- power
- power supply
- receiving device
- power receiving
- authentication
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- 238000000034 method Methods 0.000 title claims description 64
- 230000008569 process Effects 0.000 description 46
- 238000012545 processing Methods 0.000 description 23
- 238000004891 communication Methods 0.000 description 21
- 230000005540 biological transmission Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 11
- 230000005672 electromagnetic field Effects 0.000 description 11
- 230000005674 electromagnetic induction Effects 0.000 description 5
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- 238000005259 measurement Methods 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
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- 238000009499 grossing Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- -1 nickel metal hydride Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
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- 238000009774 resonance method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
-
- 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
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
-
- 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
Definitions
- the present invention relates to a non-contact power feeding system and a non-contact power feeding method, and relates to a technique for appropriately feeding power from a power feeding device to a power receiving device.
- Patent Document 1 as a technology related to contactless power feeding, a received power measuring unit that acquires a power level of received power, and a power level of power consumed in a device that is driven by receiving the supplied power are acquired.
- a wireless power transmission system is described that includes a power consumption measurement unit that performs and a power transmission control unit that controls a power level of power transmitted via a power transmission antenna based on a difference between the acquired power level and the acquired power level.
- Patent Document 2 discloses a wireless power feeding system that feeds electric equipment, in which a power circuit having a primary coil interposed in a support body that supports the electric equipment is installed, and a secondary coil is installed in the electric equipment.
- a system is described in which a load circuit is installed and power is supplied from the power supply circuit side to the load circuit side by mutual induction in both coils.
- JP 2010-239781 A Japanese Patent Laid-Open No. 04-156242
- FIG. 23 shows a state where non-contact power feeding is performed indoors.
- the power feeding device 10 (1) in the room 5 (1) can supply power to the power receiving device 20 (2) in the room 5 (2).
- the power supply device 10 (2) in the room 5 (2) can supply power to the power receiving device 20 (1) in the room 5 (1), and power can be supplied to the room 5 (1) or the room 5 (2).
- the device 10 is overloaded.
- the occupants of the room 5 (1) and the room 5 (2) are others, there is a risk of theft.
- the present invention has been made in view of such a background, and an object thereof is to provide a non-contact power feeding system and a non-contact power feeding method capable of appropriately supplying power from the power feeding device to the power receiving device. To do.
- One aspect of the present invention for achieving the above object is a non-contact power feeding system, a power feeding device that supplies power to a power receiving device, a position acquisition unit that acquires a current position of the power receiving device, and the power receiving device Power supply from the power supply apparatus to the power reception apparatus is permitted when the power supply apparatus exists in a preset area, and power supply from the power supply apparatus to the power reception apparatus when the power reception apparatus exists outside the area. And a control unit that controls not to allow the control.
- the power feeding device permits power supply from the power feeding device to the power receiving device only when the power receiving device exists in a preset area.
- the area By setting the area according to the configuration, it is possible to prevent overloading of the power feeding device itself and overloading of the electric circuit to which the power feeding device belongs.
- the power supply device since the power supply device does not permit power supply when the power receiving device is outside the area, it is possible to prevent power reception (theft) by the power receiving device that exists outside the area.
- Another aspect of the present invention is the contactless power supply system, further comprising an authentication unit that performs authentication based on authentication information transmitted from the power receiving device, and the control unit includes the area where the power receiving device is the area. If the authentication is successful, power supply from the power supply apparatus to the power reception apparatus is permitted.
- the power supply is permitted only when the power receiving device exists in the area and the authentication is successful, so that power supply from the power feeding device to the power receiving device can be appropriately performed while preventing power theft. Can do.
- the contactless power supply system further including an authentication unit that receives authentication information from the power receiving device and performs authentication, and the control unit includes the power receiving device outside the area.
- the power supply apparatus permits power supply from the power supply apparatus to the power receiving apparatus when the authentication succeeds, and the power supply apparatus when the power reception apparatus exists outside the area and does not succeed in the authentication Power supply to the power receiving device is not permitted.
- the authorization of power supply is determined after the authentication is performed, so that power supply from the power feeding device to the power receiving device is appropriately prevented by preventing power theft. Can be done.
- the position acquisition unit includes a plurality of antennas arranged adjacent to each other, and the position acquisition unit is positioned from the power receiving device by the antenna.
- Receiving the orientation signal, obtaining the direction ⁇ of the power receiving device viewed from itself based on the phase difference ⁇ of the position orientation signal received by each of the plurality of antennas, and determining the current position of itself based on the obtained direction ⁇ Let's get
- the power feeding device can acquire the accurate current position of the power receiving device based on the phase difference ⁇ of the position location signal, and therefore accurately determines whether or not the power receiving device exists in the area. It is possible to appropriately supply power from the apparatus to the power receiving apparatus.
- the contactless power supply system wherein the power receiving device includes a GPS, and the position acquisition unit receives a current position acquired by the power receiving device by the GPS from the power receiving device. Thus, the current position of the power receiving apparatus is acquired.
- control unit is configured to transmit power from the power supply device to the power reception device when the power supply device conforms to specifications related to power reception of the power reception device.
- the power supply to is permitted.
- power is supplied from the power supply apparatus to the power receiving apparatus only when the power supply apparatus conforms to the specification related to power reception of the power receiving apparatus, and therefore, power can be safely supplied from the power supply apparatus to the power receiving apparatus. Can do.
- FIG. 2 is a diagram illustrating a hardware configuration of a power supply apparatus 10.
- FIG. 2 is a diagram for describing a hardware configuration of a power receiving device 20.
- FIG. 3 is a diagram illustrating main functions provided in the power supply apparatus 10 and information managed by the power supply apparatus 10.
- FIG. 6 is a diagram illustrating an example of power supply apparatus information 150.
- FIG. It is a figure explaining the main functions with which the power receiving apparatus 20 is provided. It is a figure which shows the data format of the position location signal 700.
- FIG. 3 is a diagram illustrating a positional relationship between a power feeding device and a power receiving device.
- FIG. 3 is a diagram for explaining a positional relationship between an antenna configuring an antenna group 122 and a power receiving device 20.
- FIG. 2 is a diagram illustrating a positional relationship between a power feeding device 10 and a power receiving device 20.
- FIG. It is a flowchart explaining electric power supply start process S1100. It is a flowchart explaining electric power supply start process S1200. It is a flowchart explaining electric power supply start process S1300.
- 2 is a diagram illustrating a hardware configuration of a power supply apparatus 10.
- FIG. 2 is a diagram for describing a hardware configuration of a power receiving device 20.
- FIG. It is a figure explaining the main functions with which the electric power feeder 10 is provided. It is a figure explaining the main functions with which the power receiving apparatus 20 is provided.
- FIG. 6 is a diagram illustrating an example of a power supply start request 250.
- FIG. It is a flowchart explaining electric power supply process S2100. It is a flowchart explaining electric power supply process S2200. It is a figure which shows a mode that non-contact electric power feeding is performed.
- FIG. 1 The structure of the non-contact electric power feeding system 1 demonstrated as FIG. 1 as 1st Embodiment is shown.
- the non-contact power feeding system 1 is applied to two rooms 5 (1) and 5 (2) provided in a building such as a building.
- the power supply apparatus 10 (1) is provided in the room 5 (1)
- the power supply apparatus 10 (2) is provided in the room 5 (2).
- the room 5 (1) there is a power receiving device 20 (1) serving as a power receiving side for contactless power feeding.
- a power receiving device 20 (2) serving as a power receiving side for contactless power feeding exists.
- the power source of the power feeding device 10 (1) is connected to the wiring 61 connected to the distribution board 6 provided in the building 8, and the power source of the power feeding device 10 (2) is connected to the wiring 62 connected to the distribution board 6. Yes.
- the non-contact power feeding performed between the power feeding device 10 and the power receiving device 20 includes, for example, a resonance method in which the power feeding device and the power receiving device are coupled by a resonance phenomenon, an electromagnetic induction method in which power is fed according to the principle of electromagnetic induction, and a current into an electromagnetic wave. It is a radio wave system that converts and transmits.
- the power feeding device 10 (1) stores information for specifying the range of the room 5 (1) (for example, information represented by a two-dimensional coordinate system or a three-dimensional coordinate system; hereinafter referred to as first power feeding area information). is doing.
- the power supply apparatus 10 (2) uses information (for example, information represented by a two-dimensional coordinate system or a three-dimensional coordinate system; hereinafter referred to as second power supply area information) that specifies the range of the room 5 (2). I remember it.
- a wireless or wired communication means is provided between the power supply apparatus 10 and the power receiving apparatus 20, a wireless or wired communication means is provided.
- the power feeding device 10 (1) in the room 5 (1) acquires the current position of the power receiving device 20 and compares the acquired current position with the first power supply area information. Then, it is determined whether or not the power receiving device 20 exists in the room 5 (1).
- the power feeding device 10 (1) determines that the power receiving device 20 exists in the room 5 (1)
- the power feeding device 10 (1) starts supplying power to the power receiving device 20, and determines that the power receiving device 20 does not exist in the room 5 (1). In such a case, power supply to the power receiving device 20 is not performed.
- the power feeding device 10 (2) in the room 5 (2) acquires the current position of the power receiving device 20, and the acquired current position and the second power feeding area information Are compared to determine whether or not the power receiving device 20 exists in the room 5 (2).
- the power feeding device 10 (2) determines that the power receiving device 20 exists in the room 5 (2)
- the power feeding device 10 (2) supplies power to the power receiving device 20 and determines that the power receiving device 20 does not exist in the room 5 (2). In such a case, power supply to the power receiving device 20 is not performed.
- the power feeding device 10 is configured to supply power from the power feeding device 10 to the power receiving device 20 only when the power receiving device 20 exists in a preset power feeding area. Since supply is permitted, for example, by setting the area according to the arrangement of the power supply device 10 and the configuration of the indoor wiring, the overload of the power supply device 10 itself and the overload of the electric circuit to which the power supply device 10 belongs are prevented. Can do. In addition, since the power supply device 10 does not permit power supply when the power reception device 20 exists outside the power supply area, power reception (theft) by the power reception device 20 outside the power supply area can be prevented. Thus, according to the non-contact power feeding system 1 of the present embodiment, it is possible to appropriately supply power from the power feeding device 10 to the power receiving device 20. Hereinafter, the non-contact power feeding system 1 of the present embodiment will be described in more detail.
- FIG. 2 shows a hardware configuration of the power supply apparatus 10.
- the power feeding device 10 includes an electromagnetic field generation circuit 11, a position location communication device 12, a communication circuit 13, a central processing device 14, a storage device 15, an input device 16, and a display device 17.
- Electromagnetic field generating circuit 11 generates the electromagnetic field for supplying electric power to the power receiving device 20 from the power supply device 10.
- the electromagnetic field generation circuit 11 is configured using, for example, a high frequency power supply and a power transmission side coil.
- the position location communication device 12 includes a change-over switch 121 and an antenna group 122, and receives a radio signal (position location signal 700 or the like) related to position location described later.
- the communication circuit 13 communicates with the power receiving apparatus 20 by a wireless method or a wired method (wireless LAN (LAN: Local Area Network), Bluetooth, etc.). Note that the communication between the power supply apparatus 10 and the power receiving apparatus 20 modulates a signal (magnetic field, electric field, electromagnetic wave, etc.) for supplying power from the power supply apparatus 10 to the power receiving apparatus 20 by non-contact power supply. It may be done by.
- the central processing unit 14 is configured using a CPU, an MPU, and the like, and performs overall control of the power supply apparatus 10.
- the storage device 15 is configured using RAM, ROM, NVRAM, and the like, and stores programs and data.
- the input device 16 is a touch panel, a numeric keypad, or the like.
- the display device 17 is a liquid crystal panel or the like.
- FIG. 3 shows a hardware configuration of the power receiving device 20.
- the power receiving device 20 includes an electromotive force generation circuit 21, a power storage device 22, a position location communication device 23, an antenna 24, a communication circuit 25, a central processing unit 26, a storage device 27, an input device 28, and a display device. 29 and a load 30.
- the electromotive force generation circuit 21 is configured using a power receiving side coil or the like. In the electromotive force generation circuit 21, an electromotive force is generated by the energy of the electromagnetic field transmitted from the power feeding device 10.
- the power storage device 22 includes a storage battery such as a secondary battery (lithium ion battery, lithium polymer battery, nickel metal hydride battery, nickel cadmium battery, etc.) or a capacitive element (electric double layer capacitor, etc.), and an electromotive force generated in the electromotive force generation circuit 21.
- the power supply circuit includes a rectifier circuit, a smoothing circuit, a DC / AC inverter, a DC / DC converter, and the like for supplying a charging current based on electric power to the storage battery.
- the power receiving device 20 does not necessarily include the power storage device 22.
- the power receiving device 20 may be configured to directly supply a current based on the electromotive force generated in the electromotive force generation circuit 21 to the load 30.
- the position location communication device 23 performs wireless communication for position location described later. Details of the position location communication device 23 and the antenna 24 will be described later.
- the communication circuit 25 communicates with the power supply apparatus 10 by a wireless method or a wired method.
- the central processing unit 26 is configured using a CPU, MPU, and the like, and performs overall control of the power receiving device 20.
- the storage device 27 is configured using RAM, ROM, NVRAM, and the like, and stores programs and data.
- the input device 28 is a keyboard, a touch panel, or the like.
- the display device 29 is a liquid crystal panel or the like.
- the load 30 is, for example, a circuit (reception circuit, transmission circuit, etc.) provided in the mobile phone if the power receiving device 20 is a mobile phone.
- FIG. 4 shows main functions of the power supply apparatus 10 and main information managed by the power supply apparatus 10.
- the power feeding device 10 includes a power feeding start request receiving unit 131, a power receiving device current position acquisition unit 132, a power feeding control unit 133, and an authentication unit 134. These functions are realized by hardware of the power supply apparatus 10 or by the central processing unit 14 of the power supply apparatus 10 reading and executing a program stored in the storage device 15. As shown in the figure, the power supply apparatus 10 manages power supply apparatus information 150.
- the power supply start request receiving unit 131 receives a power supply start request, which is a signal for requesting the power supply device 10 to start power supply, from the power receiving device 20.
- the power receiving device current position acquisition unit 132 acquires the current position of the power receiving device 20 by a position locating function described later.
- the power feeding control unit 133 determines whether or not the current position of the power receiving device 20 acquired by the power receiving device current position acquiring unit 132 is within the power feeding area (the area specified by the first power feeding area information or the second power feeding area information).
- the electromagnetic field generation circuit 11 is caused to generate an electromagnetic field when it is determined that it exists.
- the authentication unit 134 requests authentication information from the power receiving apparatus 20 in the above control by the power supply control unit 133. Further, the authentication unit 134 performs authentication by verifying authentication information transmitted from the power receiving device 20 with verification information described later.
- FIG. 5 shows an example of the power supply device information 150 managed by the power supply device 10.
- the power supply apparatus information 150 includes a specification 151, a power supply area 152, and verification information 153.
- the specification 151 stores information about specifications related to the power supply function of the power supply apparatus 10 (supply power, supply voltage, supply current, resonance frequency of the power transmission side coil, and the like that can be supplied by the power supply apparatus 10).
- the power supply area 152 stores the above-described first power supply area information or second power supply area information.
- the collation information 153 stores information (hereinafter referred to as collation information) that is collated with the authentication information transmitted from the power receiving device 20.
- FIG. 6 shows main functions of the power receiving device 20.
- the power receiving device 20 includes a position location communication unit 231, a power supply start request transmission unit 232, and a power control unit 233. These functions are realized by the hardware of the power receiving device 20 or by the central processing unit 26 of the power receiving device 20 reading and executing a program stored in the storage device 27.
- the position location communication unit 231 performs communication for position location described later (such as transmission of a position location signal 700 described later).
- the power supply start request transmission unit 232 transmits a power supply start request to the power supply apparatus 10.
- the power control unit 233 supplies power to the load 30 and charges the power storage device 22 with the electromotive force generated in the electromotive force generation circuit 21.
- the power feeding apparatus 10 receives a position location signal 700 composed of a spread spectrum radio signal transmitted from the antenna 24 of the power receiving apparatus 20 while periodically switching a plurality of antennas constituting the antenna group 122. .
- FIG. 7 shows an example of the data format of the position location signal 700 transmitted from the power receiving apparatus 20.
- the position determination signal 700 includes signals and information such as a control signal 711, a measurement signal 712, and terminal information 713.
- the control signal 711 includes a modulated wave and various control signals.
- the measurement signal 712 includes an unmodulated wave of about several milliseconds (for example, a signal used to detect the direction in which the power receiving device 20 is present with respect to the power feeding device 10 and the relative distance to the power receiving device 20 with respect to the power feeding device 10 (for example, 2048 chips).
- Spreading code for example, a signal used to detect the direction in which the power receiving device 20 is present with respect to the power feeding device 10 and the relative distance to the power receiving device 20 with respect to the power feeding device 10 (for example, 2048 chips).
- Spreading code for example, a signal used to detect the direction in which the power receiving device 20 is present with respect to the power feeding device 10 and the relative distance to the power receiving device 20 with respect to the power feeding device 10 (for example, 2048 chips).
- the terminal information 713 includes information for identifying the power receiving device 20 (hereinafter referred to as “power receiving device ID”).
- FIG. 8 illustrates the positional relationship between the power feeding device 10 and the power receiving device 20.
- the power receiving device 20 exists at a position with a ground height of 1 (m), and the power feeding device 10 is fixed at a position with a ground height of H (m).
- the linear distance from directly below the power feeding device 10 to the power receiving device 20 is L (m).
- FIG. 9 is a diagram for explaining the positional relationship between the plurality of antennas constituting the antenna group 122 of the power feeding device 10 and the power receiving device 20.
- the antenna group 122 has an interval of one wavelength or less of the positioning signal 700 (for example, one wavelength (12.5 cm) when the positioning signal 700 is a radio wave in the 2.4 GHz band). It is composed of four circularly polarized directional antennas that are arranged adjacent to each other at regular intervals in a substantially square shape in plan view.
- ⁇ L (cm) is a propagation path length difference between two specific antennas of the antennas constituting the antenna group 122 and the power receiving device 20.
- ⁇ L (cm) ⁇ / (2 ⁇ / ⁇ (cm))
- ⁇ 12 (cm) arcSin ( ⁇ / ⁇ )
- ⁇ ⁇ (radian)
- FIG. 10 shows the positional relationship between the power feeding device 10 and the power receiving device 20 at the installation site of the power feeding device 10.
- the ground height of the antenna group 122 of the power feeding device 10 is H (m)
- the ground height of the power receiving device 20 is h (m)
- the position of the ground surface immediately below the power feeding device 10 is the origin and the orthogonal coordinate axes.
- ⁇ (x) is an angle formed by the direction from the power feeding device 10 to the power receiving device 20 and the X axis
- the direction from the power feeding device 10 to the power receiving device 20 is defined by the Y axis.
- the position of the power receiving device 20 with respect to the origin can be obtained from the following equation.
- ⁇ d (x) (H ⁇ h) ⁇ Tan ( ⁇ (x))
- ⁇ d (y) (H ⁇ h) ⁇ Tan ( ⁇ (y))
- the position of the origin is (X1, Y1)
- the current position (Xx, Yy) of the power receiving device 20 can be obtained from the following equation.
- Xx X1 + ⁇ d (x)
- Yy Y1 + ⁇ d (y)
- the position determination of the power receiving apparatus 20 may be performed by transmitting the position determination signal 700 from the antenna 24 of the power receiving apparatus 20 and receiving it by the antenna group 122 of the power feeding apparatus 10 to perform the position determination of the power receiving apparatus 20.
- the position determination signal 700 may be transmitted from the power supply apparatus 10, and the power receiving apparatus 20 may receive the position determination signal 700, perform position determination on the power receiving apparatus 20 side, and transmit the result to the power supply apparatus 10. Good.
- the former method is used.
- FIG. 11 is a flowchart for explaining processing (hereinafter referred to as power supply start processing S1100) for starting power supply from the power supply apparatus 10 to the power receiving apparatus 20 performed by the non-contact power supply system 1.
- the power supply start process S1100 is performed, for example, when the user of the power receiving device 20 performs a predetermined operation input to the power receiving device 20.
- the power receiving apparatus 20 transmits a power supply start request to the power supply apparatus 10 (S1111).
- the power supply start request is accompanied by the power receiving device ID of the power receiving device 20 as the transmission source.
- the electromotive force generation circuit 21 or the electromotive force generation circuit 21 is generated by electromagnetic induction action of an electromagnetic field supplied (transmitted or radiated) from the power supply device 10.
- the transmission power of the power supply start request and the power for operation of the central processing unit 26 and the communication circuit 25 related to the execution of the processing are obtained from the electromotive force generated in the antenna provided separately.
- the power receiving device 20 transmits the position location signal 700 to the power feeding device 10 (S1112), and the power feeding device 10 receives the position location signal 700 (S1122).
- the power feeding apparatus 10 obtains the current position of the power receiving apparatus 20 based on the received position location signal 700 (S1123).
- the power feeding device 10 determines whether or not the power receiving device 20 exists in the power feeding area of the power feeding device 10 based on the obtained current position.
- the process proceeds to S1125, and when the power receiving device 20 is not present in the power feeding area of the power feeding device 10 (S1124: NO), the processing ends. .
- the power supply apparatus 10 starts supplying power to the power receiving apparatus 20.
- the non-contact power feeding system 1 of the present embodiment by setting the power feeding area information (first power feeding area information, second power feeding area information) in the power feeding device 10, the power feeding device 10 itself Overload and an overload of the electric circuit to which the power feeding apparatus 10 belongs can be prevented. Further, since the power supply device 10 does not permit power supply when the power reception device 20 exists outside the power supply area, power reception (theft) by the power reception device 20 existing outside the power supply area can be reliably prevented.
- the power feeding device 10 obtains the current position of the power receiving device 20 by the above-described position location mechanism, it is possible to accurately determine whether or not the power receiving device 20 exists in the power feeding area.
- the non-contact power feeding system 1 of the present embodiment it is possible to appropriately supply power from the power feeding device 10 to the power receiving device 20.
- FIG. 12 is a flowchart illustrating a power supply start process (hereinafter referred to as a power supply start process S1200) described as the second embodiment.
- the power supply start process S1200 is performed, for example, when a user of the power receiving device 20 inputs a predetermined operation input to the power receiving device 20.
- the processing from S1111 to S1123 in the figure is the same as that in FIG.
- the power supply apparatus 10 determines whether or not the power reception apparatus 20 exists in the power supply area of the power supply apparatus 10 based on the current position of the power reception apparatus 20 obtained in S1123.
- the process proceeds to S1225, and when it does not exist (S1224: NO), the process ends.
- the power supply apparatus 10 authenticates the power receiving apparatus 20. Specifically, the authentication information sent from the power receiving apparatus 20 and the collation information 153 of the power supply apparatus 10 are collated.
- the process proceeds to S1226. If the authentication is not successful (S1225: NO), the process ends. If the authentication is not successful, the power receiving apparatus 20 may display a message to that effect.
- the power supply apparatus 10 starts supplying power to the power receiving apparatus 20.
- power supply is permitted only when the power receiving device 20 exists in the area and the authentication is successful. Can be surely prevented.
- FIG. 13 is a flowchart illustrating a power supply start process (hereinafter referred to as a power supply start process S1300) described as the third embodiment.
- the processing from S1111 to S1123 in the figure is the same as that in FIG.
- the power supply apparatus 10 determines whether or not the power reception apparatus 20 exists in the power supply area of the power supply apparatus 10 based on the current position of the power reception apparatus 20 obtained in S1123.
- the process proceeds to S1325, and when it does not exist (S1324: NO), the process proceeds to S1326.
- the power supply apparatus 10 starts supplying power to the power receiving apparatus 20.
- the power supply apparatus 10 authenticates the power receiving apparatus 20. Specifically, the power supply apparatus 10 collates the authentication information transmitted from the power receiving apparatus 20 with the verification information of the power supply apparatus 10. If the authentication is successful (S1326: YES), the process proceeds to S1325. If the authentication is not successful (S1326: NO), the process ends. If the authentication is not successful, the power receiving apparatus 20 may display a message to that effect.
- the power supply start process S1300 of the present embodiment when the power receiving device 20 exists outside the power supply area, the power supply is permitted after authentication is performed. 20 can prevent theft of electric power.
- the authentication process in the area described in the second embodiment may be performed.
- the current position of the power receiving device 20 is acquired by the above-described position location mechanism.
- the GPS provided in the receiving device 20 is used. The current position of the power receiving device 20 is acquired.
- FIG. 14 shows a hardware configuration of the power supply apparatus 10 described as the fourth embodiment.
- the basic hardware configuration of the power supply apparatus 10 of the fourth embodiment is the same as that of the first embodiment.
- the power supply apparatus 10 includes an electromagnetic field generation circuit 11, a communication circuit 13, a central processing unit 14, a storage device 15, an input device 16, and a display device 17.
- FIG. 15 shows a hardware configuration of the power receiving device 20 described as the fourth embodiment.
- the basic hardware configuration of the power receiving device 20 of the fourth embodiment is the same as that of the first embodiment.
- the power receiving device 20 includes an electromotive force generating circuit 21, a power storage device 22, a GPS receiving circuit 235, a communication circuit 25, a central processing unit 26, a storage device 27, an input device 28, a display device 29, and a load. 30.
- the GPS receiving circuit 235 receives a signal transmitted from a GPS satellite.
- FIG. 16 shows main functions of the power supply apparatus 10 described as the fourth embodiment.
- the power feeding device 10 includes a power feeding start request receiving unit 131, a power receiving device current position acquisition unit 132, a power feeding control unit 133, and an authentication unit 134. These functions are realized by hardware of the power supply apparatus 10 or by the central processing unit 14 of the power supply apparatus 10 reading and executing a program stored in the storage device 15. As shown in the figure, the power supply apparatus 10 manages power supply apparatus information 150.
- the power receiving device current position acquisition unit 132 acquires information on the current position of the power receiving device 20 sent from the power receiving device 20.
- Other functions are the same as those in the first embodiment.
- FIG. 17 shows main functions of the power receiving device 20 described as the fourth embodiment.
- the power receiving device 20 includes a position location communication unit 231, a power supply start request transmission unit 232, and a power control unit 233.
- the current position calculation transmission unit 231 obtains the current position of the power receiving device 20 based on the information received by the GPS receiving circuit 235 and transmits the obtained current position to the power feeding device 10.
- Other functions are the same as those in the first embodiment.
- FIG. 18 is a flowchart illustrating a power supply start process (hereinafter referred to as a power supply start process S1800) described as the fourth embodiment.
- the power supply start process S1800 is performed, for example, when a user of the power receiving device 20 inputs a predetermined operation input to the power receiving device 20.
- the power receiving apparatus 20 transmits a power supply start request to the power supply apparatus 10, and the power supply apparatus 10 receives the power supply start request (S1111 and S1121).
- the power supply start request is accompanied by the power receiving device ID of the power receiving device 20 as the transmission source.
- the electromotive force generation circuit 21 or the electromotive force generation circuit 21 is generated by electromagnetic induction action of an electromagnetic field supplied (transmitted or radiated) from the power supply device 10.
- the transmission power of the power supply start request and the power for operation of the central processing unit 26 and the communication circuit 25 related to the execution of the processing are obtained from the electromotive force generated in the antenna provided separately.
- the power receiving apparatus 20 obtains its current position based on information sent from the GPS satellite (S1813), and transmits the obtained current position to the power supply apparatus 10 (S1814). For example, the power receiving device 20 may obtain its current position based on GPS information in advance, and the power receiving device 20 may transmit the current position before or simultaneously with the power supply start request.
- the power feeding apparatus 10 receives the current position sent from the power receiving apparatus 20 (S1823).
- the processes of S1124 and S1125 performed by the power supply apparatus 10 following S1823 are the same as those in the first embodiment.
- the current position of the power receiving device 20 can be accurately acquired with a simple configuration using GPS. For this reason, it is possible to accurately determine whether or not the power receiving device 20 exists in the power feeding area, and it is possible to appropriately supply power from the power feeding device 10 to the power receiving device 20.
- the authentication process in the power supply area described in the second embodiment and the authentication process outside the power supply area described in the third embodiment may be performed.
- the basic configuration (hardware configuration, functional configuration) of the contactless power supply system 1 of the fifth embodiment is the same as that of the first embodiment.
- FIG. 19 is a flowchart for explaining a power supply start process (hereinafter referred to as a power supply start process S1900) described as the fifth embodiment.
- the power supply start process S1900 is performed, for example, when a user of the power receiving device 20 performs a predetermined operation input to the power receiving device 20.
- the power receiving apparatus 20 transmits a power supply start request to the power supply apparatus 10 (S1111).
- FIG. 20 shows a power supply start request 250 transmitted at this time.
- the power supply start request 250 includes a power receiving device ID 251 and a specification 252.
- the power receiving device ID assigned to each power receiving device 20 is set in the power receiving device ID 251.
- specifications of the power receiving device 20 (a charging voltage, a charging current, a resonance frequency of the power receiving side coil, etc.) are set.
- the electromotive force generation circuit 21 (or the electromotive force generation circuit 21 is generated by electromagnetic induction action of an electromagnetic field supplied (transmitted or radiated) from the power supply device 10.
- the transmission power of the power supply start request and the power for operation of the central processing unit 26 and the communication circuit 25 related to the execution of the processing are obtained from the electromotive force generated in the antenna provided separately.
- the power supply apparatus 10 determines whether or not its own specification corresponds to the specification required by the power receiving apparatus 20 (S1921). This determination is made by comparing the specification 251 of the received power supply start request 250 with the specification 151 of the power supply apparatus information 150. For example, if the power supply apparatus 10 corresponds to the charging voltage, the charging current, and the resonance frequency required by the power receiving apparatus 20, it determines that the power receiving apparatus 20 corresponds to the specification required by the power receiving apparatus 20.
- the non-contact power feeding system 1 of the present embodiment power is supplied from the power feeding device 10 to the power receiving device 20 only when the power feeding device 10 is compatible with the specifications related to power reception of the power receiving device 20. Therefore, it is possible to safely supply power from the power feeding device 10 to the power receiving device 20.
- the authentication process in the area described in the second embodiment or the authentication process outside the area described in the third embodiment may be performed. Further, as described in the fourth embodiment, the current position of the power receiving device 20 may be acquired using GPS.
- FIG. 21 is a flowchart illustrating another aspect of a method for supplying power from the power supply apparatus 10 to the power receiving apparatus 20.
- power supply process S2100 the process shown in the figure (hereinafter, referred to as power supply process S2100) will be described.
- the power receiving device 20 transmits a position location signal 700 at a predetermined time interval t after power supply from the power feeding device 10 to the power receiving device 20 is started (S2111, S2112).
- the power feeding device 10 When the power feeding device 10 receives the position location signal 700 transmitted from the power receiving device 20 (S2121), the power feeding device 10 obtains the current position of the power receiving device 20 based on the received position location signal 700 (S2122).
- the power feeding apparatus 10 determines whether or not the power receiving apparatus 20 exists in its own power feeding area based on the current position obtained in S2122 (S2123).
- the power feeding device 10 continues to supply power to the power receiving device 20 (S2124), and then proceeds to S2125.
- the power feeding device 10 stops the power supply to the power receiving device 20.
- the power supply apparatus 10 waits for a predetermined time (t + ⁇ t) to receive the position location signal 700 from the power receiving apparatus 20.
- a predetermined time t + ⁇ t
- the power feeding apparatus 10 continues to supply power to the power receiving apparatus 20, and then the process returns to S2121.
- the power feeding device 10 stops the power supply to the power receiving device 20.
- the power supply apparatus 10 monitors in real time whether or not a power supply end signal is received from the power reception apparatus 20, and stops power supply when receiving the power supply end signal (S2113, S2126).
- FIG. 22 is a flowchart illustrating another aspect of a method for supplying power from power supply apparatus 10 to power reception apparatus 20.
- power supply process S2200 the process shown in the figure (hereinafter referred to as power supply process S2200) will be described.
- the power receiving device 20 itself starts at any time (every time t (S2214)) based on information sent from a GPS satellite after power supply from the power feeding device 10 to the power receiving device 20 is started.
- the current position is obtained, and it is determined whether or not the obtained current position is different from the previously obtained position (S2211 and S2212). If the current position is different from the previously obtained position (S2212: YES), the power receiving apparatus 20 transmits information indicating the current position.
- the power feeding device 10 determines whether or not the power receiving device 20 exists in its own power supply area.
- the power feeding device 10 continues to supply power to the power receiving device 20 (S2224), and thereafter proceeds to S2225.
- the power feeding device 10 stops the power supply to the power receiving device 20.
- the power supply apparatus 10 monitors the impedance state and the like of the non-contact power supply system, and waits for a predetermined time (t + ⁇ t) to receive the position location signal 700 from the power reception apparatus 20 after the state change.
- a predetermined time t + ⁇ t
- the power feeding apparatus 10 continues to supply power to the power receiving apparatus 20, and then the process returns to S2222.
- the power feeding device 10 stops the power supply to the power receiving device 20.
- the power supply apparatus 10 monitors in real time whether or not a power supply end signal is received from the power reception apparatus 20, and stops power supply when receiving the power supply end signal (S2215, S2226).
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Abstract
Description
図1に第1実施形態として説明する非接触給電システム1の構成を示している。同図に示すように、この非接触給電システム1は、ビル等の建物内に設けられた2つの部屋5(1),5(2)に適用されている。同図に示すように、部屋5(1)には給電装置10(1)が、部屋5(2)には給電装置10(2)が夫々設けられている。また部屋5(1)には非接触給電の受電側となる受電装置20(1)が存在し、部屋5(2)には非接触給電の受電側となる受電装置20(2)が存在する。給電装置10(1)の電源は、建物8に設けられた分電盤6に繋がる配線61に接続し、給電装置10(2)の電源は、分電盤6に繋がる配線62に接続している。
次に位置標定の仕組みについて説明する。給電装置10は、アンテナ群122を構成している複数のアンテナを周期的に切り換えながら、受電装置20のアンテナ24から送られてくる、スペクトル拡散された無線信号からなる位置標定信号700を受信する。
α=arcTan(D(m)/L(m))=arcSin(ΔL(cm)/6(cm))
の関係となる。尚、ΔL(cm)は、アンテナ群122を構成しているアンテナのうち、特定の2つのアンテナと受電装置20との間の伝搬路長差である。
ΔL(cm)=Δθ/(2π/λ(cm))
の関係がある。また位置標定信号700として、例えば、2.4GHz帯の電波を用いた場合はλ≒12(cm)であるので、
α=arcSin(Δθ/π)
の関係がある。また測定可能範囲(-π/2<Δθ<π/2)内では、α=Δθ(ラジアン)となるので、上式から給電装置10が存在する方向を特定することができる。
Δd(x)=(H-h)×Tan(ΔΦ(x))
Δd(y)=(H-h)×Tan(ΔΦ(y))
そして原点の位置を(X1,Y1)とすれば、受電装置20の現在位置(Xx,Yy)は次式から求めることができる。
Xx=X1+Δd(x)
Yy=Y1+Δd(y)
図11は非接触給電システム1により行われる、給電装置10から受電装置20への電力供給を開始する処理(以下、電力供給開始処理S1100と称する。)を説明するフローチャートである。電力供給開始処理S1100は、例えば、受電装置20のユーザが受電装置20に所定の操作入力を行った場合に行われる。
次に第2実施形態の非接触給電システム1について説明する。第2実施形態の非接触給電システム1の基本的な構成(ハードウエア構成、機能構成)は第1実施形態と同様である。
続いて第3実施形態の非接触給電システム1について説明する。第3実施形態の非接触給電システム1の基本的な構成(ハードウエア構成、機能構成)は第1実施形態と同様である。
第1実施形態の非接触給電システム1では、受電装置20の現在位置を前述した位置標定の仕組みによって取得するが、第4実施形態の非接触給電システム1では、受信装置20に設けたGPSによって受電装置20の現在位置を取得する。
図18は第4実施形態として説明する電力供給開始処理(以下、電力供給開始処理S1800と称する。)を説明するフローチャートである。電力供給開始処理S1800は、例えば、受電装置20のユーザが受電装置20に所定の操作入力を行った場合に行われる。
続いて第5実施形態の非接触給電システム1について説明する。第5実施形態の非接触給電システム1の基本的な構成(ハードウエア構成、機能構成)は第1実施形態と同様である。
図21は給電装置10から受電装置20への電力供給方法の他の態様を説明するフローチャートである。以下、同図に示す処理(以下、電力供給処理S2100と称する。)について説明する。
図22は給電装置10から受電装置20への電力供給方法の他の態様を説明するフローチャートである。以下、同図に示す処理(以下、電力供給処理S2200と称する。)について説明する。
Claims (9)
- 受電装置に非接触給電により電力供給を行う給電装置と、
前記受電装置の現在位置を取得する位置取得部と、
前記受電装置が予め設定されたエリア内に存在する場合は前記電力供給を許可し、前記受電装置が前記エリア外に存在する場合は前記電力供給を許可しないように制御する制御部と
を備えることを特徴とする非接触給電システム。 - 請求項1に記載の非接触給電システムであって、
前記受電装置から送られてくる認証情報に基づき認証を行う認証部をさらに備え、
前記制御部は、前記受電装置が前記エリア内に存在し、かつ、前記認証に成功した場合に前記電力供給を許可する
ことを特徴とする非接触給電システム。 - 請求項1に記載の非接触給電システムであって、
前記受電装置から送られてくる認証情報に基づき認証を行う認証部をさらに備え、
前記制御部は、
前記受電装置が前記エリア外に存在し、かつ、前記認証に成功した場合は前記電力供給を許可し、
前記受電装置が前記エリア外に存在し、かつ、前記認証に成功しない場合は前記電力供給を許可しない
ことを特徴とする非接触給電システム。 - 請求項1ないし3のいずれか一項に記載の非接触給電システムであって、
前記位置取得部は互いに隣接して配置された複数のアンテナを備え、
前記位置取得部は、前記アンテナにより前記受電装置から位置標定信号を受信し、前記複数のアンテナの夫々によって受信される前記位置標定信号の位相差Δθに基づき自身から見た前記受電装置の方向αを求め、求めた前記方向αに基づき自身の現在位置を取得する
ことを特徴とする非接触給電システム。 - 請求項1ないし4のいずれか一項に記載の非接触給電システムであって、
前記受電装置はGPSを備え、
前記位置取得部は、前記受電装置から送られてくる、前記受電装置が前記GPSによって取得した現在位置を受信することにより、前記受電装置の現在位置を取得する
ことを特徴とする非接触給電システム。 - 請求項1ないし5のいずれか一項に記載の非接触給電システムであって、
前記制御部は、前記給電装置が、前記受電装置の受電に関する仕様に対応している場合に、前記電力供給を許可する
ことを特徴とする非接触給電システム。 - 受電装置の現在位置を取得する位置取得部を備え、非接触給電により電力供給を行う給電装置が、前記受電装置が予め設定されたエリア内に存在する場合は前記電力供給を許可し、前記受電装置が前記エリア外に存在する場合は前記電力供給を許可しないように制御するようにすることを特徴とする非接触給電方法。
- 請求項7に記載の非接触給電方法であって、
前記給電装置が、
前記受電装置から送られてくる認証情報に基づき認証を行い、
前記受電装置が前記エリア内に存在し、かつ、前記認証に成功した場合に前記電力供給を許可するようにする
ことを特徴とする非接触給電方法。 - 請求項7に記載の非接触給電方法であって、
前記給電装置が、
前記受電装置から送られてくる認証情報に基づき認証を行い、
前記受電装置が前記エリア外に存在し、かつ、前記認証に成功した場合は前記電力供給を許可し、
前記受電装置が前記エリア外に存在し、かつ、前記認証に成功しない場合は前記電力供給を許可しないようにする
ことを特徴とする非接触給電方法。
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CN201180073341.6A CN103828188B (zh) | 2011-09-09 | 2011-09-09 | 非接触供电系统以及非接触供电方法 |
JP2012524966A JP5274712B1 (ja) | 2011-09-09 | 2011-09-09 | 非接触給電システム、及び非接触給電方法 |
EP11871902.0A EP2755300A4 (en) | 2011-09-09 | 2011-09-09 | NON-CONTACT POWER SUPPLY SYSTEM AND CONTACTLESS POWER SUPPLY METHOD |
PCT/JP2011/070564 WO2013035190A1 (ja) | 2011-09-09 | 2011-09-09 | 非接触給電システム、及び非接触給電方法 |
US14/342,761 US9571162B2 (en) | 2011-09-09 | 2011-09-09 | Non-contact power supply system and non-contact power supply method |
KR1020147006741A KR101573347B1 (ko) | 2011-09-09 | 2011-09-09 | 비접촉 급전 시스템 및 비접촉 급전 방법 |
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US20140239734A1 (en) | 2014-08-28 |
EP2755300A4 (en) | 2015-04-22 |
KR101573347B1 (ko) | 2015-12-01 |
JPWO2013035190A1 (ja) | 2015-03-23 |
EP2755300A1 (en) | 2014-07-16 |
KR20140064865A (ko) | 2014-05-28 |
CN103828188A (zh) | 2014-05-28 |
JP5274712B1 (ja) | 2013-08-28 |
CN103828188B (zh) | 2016-08-31 |
US9571162B2 (en) | 2017-02-14 |
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