WO2012001959A1 - 無線電力伝送装置 - Google Patents
無線電力伝送装置 Download PDFInfo
- Publication number
- WO2012001959A1 WO2012001959A1 PCT/JP2011/003696 JP2011003696W WO2012001959A1 WO 2012001959 A1 WO2012001959 A1 WO 2012001959A1 JP 2011003696 W JP2011003696 W JP 2011003696W WO 2012001959 A1 WO2012001959 A1 WO 2012001959A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- unit
- resonance
- resonator
- power transmission
- relay
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00045—Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
-
- 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
- H02J50/50—Circuit arrangements or systems for wireless supply or distribution of electric power using additional energy repeaters between transmitting devices and receiving devices
- H02J50/502—Circuit arrangements or systems for wireless supply or distribution of electric power using additional energy repeaters between transmitting devices and receiving devices the energy repeater being integrated together with the emitter or the receiver
-
- 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
Definitions
- the present invention relates to a wireless power transmission device capable of transmitting energy from a power transmission unit to a power reception unit in a contactless manner.
- the present invention also relates to a device including a power receiving unit used in combination with the wireless power transmission device, and a wireless power transmission device system.
- the power supply method for various electric devices is generally performed by electric wires (wired).
- Wired power supply is performed by confining electric power in the electric wire, and thus has advantages in terms of stability of power supply and safety against electric shock.
- connecting an electrical wire from the outlet to the electrical device greatly hinders the portability of the device.
- wired power transmission does not have a clean appearance, and there is a risk that a person or an object may be caught by an electric wire and fall down. Since the outlet and the wire end are connected by a metal contact, it is necessary to ensure waterproofness / dustproofness.
- a wireless power transmission system in which power is supplied to various electric devices in a non-contact manner is attracting attention.
- a magnetic resonance method described in Patent Document 1 has been proposed in addition to the electromagnetic induction method that has been conventionally studied.
- the magnetic resonance method is a method using coupling between resonance modes between resonance antennas. According to the magnetic resonance method, high-efficiency power transmission over a long distance is possible as compared with the conventional electromagnetic induction method.
- the use of a resonant magnetic field is considered to have less influence on the surrounding living body than the use of a resonant electric field.
- Patent Document 2 shows an application example of a wireless power transmission device using a magnetic resonance method.
- this application example by providing the tertiary coil between the primary coil that transmits power and the secondary coil that receives power, high power can be sent to the secondary coil more efficiently. That is, the tertiary coil relays power between the primary coil and the secondary coil.
- the efficiency of power transmission can be maximized by optimizing the installation location and resonance frequency of the relay resonator. it can.
- One object of the present invention is to provide a wireless power transmission device that can increase the degree of freedom of the position of a device that receives power during power transmission.
- the wireless power transmission device of the present invention is a wireless power transmission device that wirelessly transmits power from a power transmission unit to a power reception unit via a resonant magnetic field, and includes a power transmission unit that resonates at a resonance frequency f0 and the resonance frequency f0.
- Output at least one relay unit that can resonate at a frequency selected from a plurality of frequencies, and resonance condition information that specifies a resonance condition of the relay unit according to the arrangement of the power reception unit, and based on the resonance condition information,
- a resonance control unit that controls the resonance condition of the relay unit.
- the at least one relay unit includes first to n-th (n is an integer of 2 or more) relay units that can resonate at a frequency selected from a plurality of frequencies including the resonance frequency f0.
- the resonance control unit outputs resonance condition information specifying resonance conditions of the first to n-th relay units according to the arrangement of the power receiving unit, and sets the resonance conditions of each relay unit based on the resonance condition information. Control.
- a communication system that transmits the resonance condition information from the resonance control unit to the relay unit.
- a position detection unit that detects a position of the power reception unit and outputs position information of the power reception unit is provided.
- the position information of the power receiving unit is information related to a position of a power receiving resonator included in the power receiving unit.
- the relay unit receives the resonance condition information from the resonance resonator that resonates at the resonance frequency f0 and the resonance control unit, and changes the resonance condition of the relay resonator based on the resonance condition information. And a resonance adjusting circuit to be operated.
- each of the resonance control unit and the relay unit includes a communication unit, and the relay unit receives the resonance condition information from the resonance control unit via the communication unit.
- the position detection unit is provided in the relay unit, and the communication unit included in the relay unit is configured to output the position information of the power receiving unit output from the position detection unit to the resonance control unit. To the communication unit.
- the resonance control unit and the position detection unit each include a communication unit, and the communication unit included in the position detection unit includes position information of the power receiving unit included in the resonance control unit. To communicate.
- the resonance control unit selects a relay unit that does not resonate at the resonance frequency f0 based on the position information of the power receiving unit, and outputs the resonance condition information based on a result of the selection.
- the resonance control unit prevents at least one relay unit other than the relay unit closest to the power receiving unit from resonating at the resonance frequency f0.
- the resonance control unit prevents the relay unit closest to the power transmission unit from resonating at the resonance frequency f0 when the power reception unit is close to the power transmission unit.
- the resonance control unit includes at least one relay unit positioned between the power transmission unit and the power reception unit when the power reception unit is located in a region sandwiched between two adjacent relay units. Resonates at the resonance frequency f0.
- the resonance control unit when the resonance control unit is capable of directly transmitting power from the power transmission unit to the power reception unit, all the relays existing in a region sandwiched between the power transmission unit and the power reception unit The part is prevented from resonating at the resonance frequency f0.
- the resonance control unit when the resonance control unit can directly transmit power from the power transmission unit to the power reception unit, the relay unit closest to the power reception unit does not resonate at the resonance frequency f0. To.
- the power transmission unit includes a resonance signal generation unit that generates a resonance signal having the resonance frequency f0, and a power transmission resonator that generates a resonance magnetic field based on the resonance signal.
- the power transmission unit includes a resonance adjustment circuit that changes a resonance frequency of the power transmission resonator.
- At least a part of the power transmission unit and the relay unit is embedded in a building wall, a floor, or a ceiling.
- the device of the present invention is a device including a power reception unit used in combination with any one of the wireless power transmission devices described above, and the power reception unit resonates at the resonance frequency f0, so that the wireless power transmission device A power receiving resonator that receives energy from the power transmission unit or the relay unit, and an output conversion unit that converts the energy into power source energy.
- the power reception unit includes a communication unit that can receive resonance condition information from the resonance control unit, and a resonance adjustment circuit that controls the power reception resonator based on the resonance condition information.
- the power reception unit includes a position detection unit that detects a position of the power reception unit and outputs position information generated based on the detection result, and the communication unit transmits the position information to the resonance control unit. To communicate.
- the wireless power transmission system of the present invention includes a power transmission unit that resonates at a resonance frequency f0, at least one relay unit that can resonate at a frequency selected from a plurality of frequencies including the resonance frequency f0, and a resonance at the resonance frequency f0.
- Resonance control for outputting resonance condition information for specifying a resonance condition of the relay unit according to the arrangement of the power reception unit and at least one power reception unit that controls the resonance condition of the relay unit based on the resonance condition information A part.
- the at least one power receiving unit includes a plurality of power receiving units that can resonate at a frequency selected from a plurality of frequencies including the resonance frequency f0, and the resonance control unit includes the plurality of power receiving units.
- Resonance condition information specifying resonance conditions of the relay unit and the plurality of power receiving units according to the arrangement is output, and the resonance conditions of the relay unit and the power receiving unit are controlled based on the resonance condition information, Power is supplied to the power receiving unit in a time-sharing manner.
- the power transmission unit includes a plurality of power transmission resonators orthogonal to each other.
- the power receiving unit includes a direction detection unit that detects a direction of a power reception resonator included in the power reception unit and outputs direction information based on the detection result, and the power transmission unit includes the direction information based on the direction information.
- One power transmission resonator selected from a plurality of power transmission resonators is resonated at the resonance frequency f0.
- the range in which power can be transmitted wirelessly to the power receiving unit is expanded.
- positioning of a receiving part is realizable.
- the figure which shows the wireless power transmission apparatus system by this invention The figure which shows the wireless power transmission apparatus system by this invention from which the position of the power receiving part 200 differs The figure which shows the basic structural example of the power transmission part 100 with which the wireless power transmission apparatus of this invention is provided.
- the figure which shows the basic structural example of the relay part 300 with which the wireless power transmission apparatus of this invention is provided.
- the figure which shows the basic structural example of the resonance control part 600 with which the wireless power transmission apparatus of this invention is provided.
- the figure which shows the basic structural example of the power receiving part 200 which receives supply of electric power from the wireless power transmission apparatus of this invention.
- the figure which shows the wireless power transmission system by this invention provided with the some relay part 300 The figure which shows the structure of the wireless power transmission apparatus 1 in Embodiment 1 of this invention.
- FIG. 1 The figure which shows the case where the receiving resonator 20 adjoins the 1st relay resonator 30-1 in the wireless power transmission apparatus 1 of Embodiment 1.
- FIG. 1 The schematic diagram which shows the transmission efficiency evaluation system in case the relay resonator 30 couple
- FIG. 5 is a diagram illustrating a configuration example in which a resonance adjustment circuit 60 is connected to each of the relay resonators 30-1 and 30-2 in the second embodiment.
- FIGS. 1A and 1B are block diagrams showing a configuration example of the wireless power transmission device 1 according to the present invention and a power receiving unit (power receiving device) 200 that receives power from the wireless power transmission device 1.
- 1A and 1B differ in the arrangement of the power receiving unit 200, but the configuration of the wireless power transmission device 1 is the same.
- 1A and 1B includes a power transmission unit 100 that resonates at a resonance frequency f0, a relay unit 300 that can resonate at a frequency selected from a plurality of frequencies including the resonance frequency f0, and a relay unit.
- the power receiving unit 200 is a device to which the wireless power transmission device 1 supplies power, and is combined with the wireless power transmission device 1 to configure a “wireless power transmission system”.
- the position of the power receiving unit 200 can change as shown in FIGS. 1A and 1B.
- the power receiving unit 200 can be an office device such as a personal computer or a notebook computer, an AV device such as a wall-mounted television or a mobile AV device, or a health care device such as a hearing aid.
- the power receiving unit 200 may be an electric vehicle, an electric motorcycle, a robot, a solar cell, a fuel cell, or the like. Further, the number of power receiving units 200 that can receive power from one wireless power transmission apparatus 1 is not limited to one.
- the power transmitting unit 100, the relay unit 300, and the power receiving unit 200 each have a resonator (antenna) that can be coupled by a resonant magnetic field.
- the resonator included in the power transmission unit 100 is referred to as “power transmission resonator 10”
- the resonator included in the relay unit 300 is referred to as “relay resonator 30”
- the resonator included in the power reception unit 200 is referred to as “power reception resonator 20”.
- Each of these resonators 10, 20, and 30 is configured by a resonance circuit in which an inductor and a capacitive element are connected in series or in parallel.
- the relay unit 300 resonates” means that the relay resonator 30 included in the relay unit 300 resonates, and “the power receiving unit 200 resonates” means that the power receiving resonator 20 included in the power receiving unit 200. Means resonance.
- FIG. 1C shows a basic configuration example of the power transmission unit 100.
- the power transmission unit 100 includes a power transmission resonator 10 that functions as a power transmission antenna, and a resonance signal generation unit 40 that supplies high-frequency energy to the power transmission resonator 10.
- the power transmission resonator 10 forms a resonant magnetic field that vibrates at the frequency f0 around the power transmission resonator 10 by distributing magnetic field energy of the frequency f0 in the surrounding space.
- FIG. 1D shows a basic configuration example of the relay unit 300.
- the relay unit 300 is sent from the relay resonator 30 that functions as a relay antenna, the resonance adjustment circuit 60 that can change the resonance frequency of the relay unit 300, and the resonance control unit 600 (FIGS. 1A and 1B). And a communication unit 80 for receiving signals.
- the relay unit 300 functions as a “variable resonator” by the function of the resonance adjustment circuit 60.
- a configuration example of the resonance adjustment circuit 60 will be described later.
- Signal transmission via the communication unit 80 may be performed by either wire or wireless.
- FIG. 1E shows a basic configuration example of the resonance control unit 600.
- the resonance control unit 600 determines the information (resonance condition information) for specifying the resonance condition of the relay unit 300 according to the arrangement of the power receiving unit 200, and the communication unit for transmitting the resonance condition information to the relay unit 300. 80.
- the resonance control unit 600 outputs the resonance condition information of the relay unit 300 according to the arrangement of the power receiving unit 200, and causes the relay unit 300 to resonate under the resonance condition specified by this information. That is, the resonance frequency of the relay unit 300 is switched between f0 and a value other than f0 in accordance with the resonance condition information received from the resonance control unit 600.
- the main part of the resonance control unit 600 can be configured by a general-purpose computer or controller in which a program for controlling the resonance state of the relay resonator 30 is built, but may be realized by dedicated hardware. .
- FIG. 1F shows a basic configuration example of the power receiving unit 200.
- the power reception unit 200 includes a power reception resonator 20 that functions as a power reception antenna, an output conversion unit 50 connected to the power reception resonator 20, and a load 90 connected to the output conversion unit 50.
- the power receiving resonator 20 can receive energy from the wireless power transmission device 1 by being coupled with a resonant magnetic field of the resonance frequency f0 formed by the wireless power transmission device 1.
- the load 90 is a circuit that consumes the energy received by the power receiving resonator 20 via the resonant magnetic field, and varies depending on the type of the power receiving unit 200.
- the output converter 50 converts the energy obtained by the power receiving resonator 20 into DC power having a voltage required by the load 90 or AC power having a frequency and voltage required by the load 90.
- the resonance condition of the relay unit 300 is changed depending on whether the power receiving unit 200 is in the position shown in FIG. 1A or in the position shown in FIG. 1B.
- the resonance control unit 600 sets the resonance frequency of the relay unit 300 to f0, thereby setting the relay unit 300. Can be coupled to a resonant magnetic field of frequency f0. By doing so, it becomes possible to wirelessly supply power to the power receiving unit 200 far from the power transmitting unit 100 via the relay unit 300.
- the resonance control unit 600 changes the resonance frequency of the relay unit 300 to a value other than f0. By doing so, the relay unit 300 is not coupled to the resonant magnetic field having the frequency f0. As a result, it is possible to avoid energy transmission loss due to the relay unit 300 being unnecessary for power transmission from the power transmission unit 100 to the power reception unit 200.
- the resonance control unit 600 can change the resonance condition of the relay unit 300 according to the arrangement of the power reception unit 200, and thus is most efficient according to the arrangement of the power reception unit 200. Energy transmission can be realized.
- the number of relay units 300 included in the wireless power transmission device 1 is not limited to one.
- the wireless power transmission device 1 may include first to n-th (n is an integer of 2 or more) relay units 300. Even when the wireless power transmission apparatus 1 includes a plurality of relay units 300, an efficient transmission path can be obtained by preventing the relay unit 300 unnecessary for power transmission from being coupled to the resonance magnetic field according to the arrangement of the power receiving unit 200. Can be selected.
- FIG. 1G shows a basic configuration example of the wireless power transmission device 1 including a plurality of relay units 300.
- the wireless power transmission device 1 illustrated in FIG. 1G is illustrated in FIGS. 1A and 1B except that the wireless power transmission device 1 includes a plurality of relay units 300 that can resonate at a frequency selected from a plurality of frequencies including the resonance frequency f0.
- the same configuration as that of the wireless power transmission device 1 is provided.
- the resonance control unit 600 When the wireless power transmission device 1 includes a plurality of relay units 300, the resonance control unit 600 outputs information (resonance condition information) that specifies the resonance conditions of each of the plurality of relay units 300 according to the arrangement of the power receiving units 200. Then, each relay unit 300 is resonated under the resonance condition specified by this information.
- the resonance control unit 600 determines which relay unit 300 is coupled to the resonance magnetic field and which relay unit 300 is not coupled to the resonance magnetic field depending on the arrangement of the power reception unit 200. Be controlled. Thus, efficient wireless power transmission can be realized through the necessary relay unit 300 without using the unnecessary relay unit 300.
- “arrangement of the power receiving unit” means the position (power receiving position) of the power receiving resonator 20 included in the power receiving unit 200 when the power receiving unit 200 is single.
- the set is a set of positions of the power receiving resonator 20 included in each power receiving unit.
- the “position set” defines the positional relationship between a plurality of power receiving resonators.
- This “power receiving position” is not limited to an accurate position in a space determined by three-dimensional coordinates.
- the information indicating “power receiving position” is information that identifies the resonator closest to the power receiving resonator 20 among the power transmitting resonator 10 and the relay resonator 30 included in the wireless power transmission device 1. Therefore, the information indicating the power receiving position is not limited to the information specifying the spatial coordinates of the power receiving position, and includes information specifying the resonators 10 and 30 closest to the power receiving resonator 20.
- the information indicating the power receiving position includes various types of information (information indicating the distance from the power transmitting resonator 10 or information indicating the power receiving resonator 20 that can be used to specify the resonators 10 and 30 closest to the power receiving resonator 20. Including information indicating in which of a plurality of areas). Such information indicating the power receiving position may be input to the resonance control unit 600 by the user, or the wireless power transmission device 1 may include a power receiving position detecting unit that detects the power receiving position.
- the wireless power transmission device 1 of this embodiment includes a power transmission unit 100 that resonates at a resonance frequency f0, two relay resonance units 300, and a resonance control unit 600, as shown in FIG. 1G.
- FIG. 2 shows an arrangement relationship between the power transmission resonator 10 and the relay resonator 30 included in the wireless power transmission device 1 according to the present embodiment.
- the two relay resonators 30 are given different reference numerals, that is, “30-1” and “30-2”.
- reference numerals such as “30-1”, “30-2”, “30-...” Are attached to the respective relay resonators.
- the reference numeral “30” is attached.
- xyz coordinates three-dimensional orthogonal coordinates
- the xyz coordinates are described as necessary in the drawings referred to later. In the following description, some of the components that are not particularly necessary (for example, the communication unit 80) are omitted as appropriate in the drawings.
- the resonator surface defined by the inductor of the power transmission resonator 10 is parallel to the xy plane, and the center of the resonator surface is located at the origin of the xyz coordinates.
- the resonator surfaces defined by the inductors of the first relay resonator 30-1 and the second relay resonator 30-2 are also parallel to the xy plane, and the center of each resonator surface. Are positioned on the z-axis.
- the distance between the power transmission resonator 10 and the relay resonators 30-1 and 30-2 is such that the power transmission resonator 10 and the first relay resonator 30-1 are coupled to each other by the resonance magnetic field, and the first relay resonance.
- the resonator 30-1 and the second relay resonator 30-2 are set so that they can be coupled.
- the wireless power transmission device 1 does not need to be arranged indoors, and part or all of the wireless power transmission device 1 may be arranged outdoors.
- the wireless power transmission device 1 is disposed indoors, at least a part of the power transmission unit 100 and the relay unit 300 may be embedded in, for example, a building wall, a floor, or a ceiling.
- the power transmission resonator 10 can be embedded in a floor, for example.
- the first relay resonator 30-1 and the second relay resonator 30-2 can be embedded in four wall surfaces so that the wiring of the inductor surrounds the interior of the room.
- the second relay resonator 30-2 may be embedded in the ceiling.
- the user supplies power to the power receiving device without being particularly aware of the existence of the wireless power transmission device. It becomes possible. In this case, the user is located inside the inductor included in each resonator 10, 30. For this reason, it is desirable to prescribe the amount of electric power for wireless transmission in consideration of the influence of the resonant magnetic field on the human body and peripheral devices.
- FIG. 3A is a diagram illustrating a case where the power receiving resonator 20 is close to the first relay resonator 30-1 in the wireless power transmission device of this embodiment.
- FIG. 3B is a diagram illustrating a case where the power receiving resonator 20 is close to the second relay resonator 30-2 in the wireless power transmission device.
- the difference between FIG. 3A and FIG. 3B is the arrangement of the power receiving resonator 20.
- the power receiving resonator 20 is located between the first relay resonator 30-1 and the second relay resonator 30-2.
- the power receiving resonator 20 is placed at a position farther from the power transmission resonator 10 than the second relay resonator 30-2.
- the power receiving resonator 20 is selected from the power transmitting resonator 10 and the relay resonators 30-1 and 30-2 as the resonator to be coupled most strongly depending on the position thereof.
- the operation of the present embodiment will be described for the case where the power receiving resonator 20 is located at the position shown in FIG.
- the power receiving resonator 20 at the position shown in FIG. 3A can receive the energy from the power transmitting resonator 10 with high efficiency by being most strongly coupled to the first relay resonator 30-1. Therefore, in the arrangement example of FIG. 3A, in order to transmit power from the power transmission resonator 10 to the power reception resonator 20, the power transmission resonator 10 and the first relay resonator 30-1 are connected by a magnetic field that resonates at the resonance frequency f0. Join.
- the power transmission resonator 10 resonates at the frequency f0 and forms a resonant magnetic field of the frequency f0 in the peripheral space.
- the first relay resonator 30-1 resonates at the frequency f0, energy is wirelessly transmitted from the power transmission resonator 10 to the first relay resonator 30-1 via the resonant magnetic field.
- the first relay resonator 30-1 and the power receiving resonator 20 are coupled via this resonant magnetic field, the first relay resonator 30-1 to the power receiving resonator 20 are coupled. Energy is transmitted.
- An output conversion unit 50 is connected to the subsequent stage of the power receiving resonator 20. The output conversion unit 50 converts the energy obtained by the power receiving resonator 20 into direct current or alternating current (50 Hz, 60 Hz, etc.) power, and supplies power to a desired load 90.
- the second relay resonator 30-2 has a resonance with the second relay resonator 30-2 so that the coupling with the resonant magnetic field can be released, that is, “uncoupled”.
- a resonance adjustment circuit 60 capable of changing the frequency is connected. As illustrated in FIG. 3A, the resonance adjustment circuit 60 includes at least one of a switch, a capacitance component C, an inductor component L, a resistance component R, and the like.
- the inductor, capacitance, and resistance of the second relay resonator 30-2 are configured to resonate at the frequency f0.
- the second relay resonator 30-2 is switched.
- the resonance frequency can be changed. That is, the resonance adjustment circuit 60 changes the resonance frequency of the second relay resonator 30-2 from f0 to a value other than f0 by grounding any part of the second relay resonator 30-2. Can do.
- the resonance adjustment circuit 60 switches between adding or deleting at least one component of the capacitance component C, the inductance component L, and the load component R to the resonance circuit formed by the second relay resonator 30-2.
- the resonance frequency of the second relay resonator 30-2 may be changed. That is, the resonance adjustment circuit 60 changes the size of at least one of the inductor component, the capacitance component, and the resistance component in the resonance circuit formed by the second relay resonator 30-2, thereby changing the second relay resonator 30.
- -2 is configured such that the resonance frequency of -2 can be switched between f0 and a value other than f0. Therefore, the second relay resonator 30-2 can operate as a variable resonator as a whole when combined with the resonance adjustment circuit 60. Note that the method by which the resonance adjustment circuit 60 changes the resonance frequency of the relay resonator 30 is not limited to the above example.
- the resonance adjustment circuit 60 changes the resonance frequency of the second relay resonator 30-2 to a value other than f0, whereby the first relay resonator 30-1 and the second relay resonator 30-1 are changed.
- the power transmission efficiency to the power receiving resonator 20 can be increased by decoupling the resonator 30-2.
- the resonance adjustment circuit 60 sets the resonance frequency of the second relay resonator 30-2 to f0, whereby the second relay resonator 30-2 is connected to the first relay resonator 30-1. Join.
- the resonance adjustment circuit 60 is connected only to the second relay resonator 30-2. However, the resonance adjustment circuit 60 may be connected to the first relay resonator 30-1. If the resonance adjustment circuit 60 is connected to the first relay resonator 30-1, the resonance frequency of the first relay resonator 30-1 can be changed. Next, when the second relay resonator 30-2 is coupled with the first relay resonator 30-1 at the resonance frequency f0 and when it is not coupled, power transmission from the power transmission resonator 10 to the power reception resonator 20 is performed. The efficiency evaluation results will be described.
- FIG. 4 is a diagram schematically showing a transmission efficiency evaluation system when the second relay resonator 30-2 is coupled at the resonance frequency f0.
- All resonators have a resonator plane parallel to the xy plane.
- the resonator sizes of the power transmission resonator 10 and the power reception resonator 20 are both 30 cm square.
- the resonator sizes of the first relay resonator 30-1 and the second relay resonator 30-2 are both 300 cm square.
- Such a system is realized by installing the relay resonators 30-1 and 30-2 at different heights along the wall surface (inside the wall) of a room having a square floor with a side length of 3 m, for example. Is done.
- the power receiving resonator 20 corresponds to a resonator provided in such a notebook personal computer (30 cm square bottom) in the room.
- the (x, y, z) coordinates of the center position of each resonator are ( ⁇ 30 cm, ⁇ 30 cm, ⁇ 26.25 cm) for the power transmitting resonator 10 and (+30 cm, +30 cm) for the power receiving resonator 20. , +26.25 cm) (0 cm, 0 cm, 0 cm) for the first relay resonator 30-1 and (0 cm, 0 cm, +52.5 cm) for the second relay resonator 30-2.
- the conductive wires of the resonators 10 and 30 were Litz wires known as parallel wiring.
- the number of turns of the conductor of each resonator is 6 for the power transmission / reception resonators 10 and 20 and 3 for the relay resonator 30.
- the carrier frequency fc and the resonance frequency f0 of each resonator are both 500 kHz.
- the conductivity of the inductor wiring was set to 7 ⁇ 10 8 S / m.
- the power transmission efficiency from the power transmission resonator 10 to the power reception resonator 20 was 2.6%.
- the cause of the significant deterioration in transmission efficiency is that the coupling between the first relay resonator 30-1 and the second relay resonator 30-2 is strong, and the second relay resonator 30-2 This is considered to be due to the large and unnecessary power feeding. If the large relay resonators 30 are arranged densely so that the small power receiver resonator 20 can efficiently receive power at an arbitrary place, the coupling between the relay resonators 30 becomes strong.
- the distance D between the arbitrary relay resonator 30 and the power receiving resonator 20 is set to a resonator of the power receiving resonator 20 which is a smaller resonator. It is desirable to keep the diameter to about L (30 cm in FIG. 4).
- the resonator diameter L corresponds to the length of one side when the resonator is square, the length of the short side when it is rectangular, and the diameter when it is circular. Therefore, the distance between the relay resonators 30 should be kept within twice the short side or diameter of the power receiving resonator 20 (when the schematic shape of the inductor is circular), that is, about 60 cm in the example of FIG. Is desirable.
- the first relay resonator 30-1 and the second relay resonator 30-2 are combined.
- FIG. 5 shows an evaluation system when the second relay resonator 30-2 is removed under the same evaluation conditions as the evaluation system shown in FIG. That is, it can be regarded as an evaluation system when the second relay resonator 30-2 is controlled to be uncoupled at the resonance frequency f0.
- a result that the power transmission efficiency from the power transmission resonator 10 to the power reception resonator 20 was improved to 69.6% was obtained.
- the power transmission efficiency is compared between the two evaluation systems shown in FIGS. 4 and 5, the effect of decoupling the unnecessary relay resonator 30 appears as an efficiency ratio of about 27 times.
- the coupling / non-coupling that is, the resonance condition such as the resonance frequency
- the resonance condition such as the resonance frequency
- the change of the resonance condition performed according to the position of the power receiving resonator 20 may be performed manually by the user.
- the user may input information specifying the relay resonator 30 closest to the power receiving resonator 20 to the resonance control unit 600.
- the position of the power receiving resonator 20 is periodically detected, and the resonance of the power receiving resonator 20 is followed by the relay resonance. It is desirable to switch the resonance conditions of the vessel 30 at any time.
- Such position detection of the power receiving resonator 20 is desirably performed not by manual operation but by using a power receiving position detection unit.
- FIG. 6 shows a configuration example of the wireless power transmission device 1 in the present embodiment.
- the wireless power transmission device 1 controls a power transmission unit 100 that resonates at a resonance frequency f0, a relay unit 300 that can resonate at a frequency selected from a plurality of frequencies including the resonance frequency f0, and a resonance condition of the relay unit 300. And a power receiving position detecting unit 70 that detects the position of the power receiving resonator 20. Since the power receiving resonator 20 is a constituent element of the power receiving unit 200, if the position of the power receiving unit 200 is detected, the approximate position of the power receiving resonator 20 is also detected.
- the power receiving position detecting unit 70 detects the position (power receiving position) of the power receiving resonator 20 and outputs information (position information) indicating the detected position. This position information is sent to the resonance control unit 600 via the communication unit 80.
- the power receiving position detection unit 70 is described as a separate component from the power transmission unit 100 and the relay unit 300, but the power reception position detection unit 70 is provided in either the power transmission unit 100 or the relay unit 300. It may be done.
- FIG. 7 shows an example in which the power receiving position detection unit 70 is provided in the relay unit 300.
- the communication unit 80 in this example can not only receive the resonance control signal output from the resonance control unit 600 but also transmit the position information output from the power receiving position detection unit 70 to the resonance control unit 600. Transmission of signals (information) by the communication unit 80 may be performed by either wired or wireless as described in the first embodiment.
- the wireless power transmission device includes the power receiving position detection unit 70, even if the position of the power receiving resonator 20 changes at any time, the power receiving position detection unit 70 detects the position, and relays according to the detected position. It becomes possible to switch the resonance conditions of the resonator 30 at any time. Such a change in the resonance condition can be referred to as an “adaptive change in the resonance condition”.
- FIG. 8 shows an example of the arrangement relationship of the resonators 10, 20, and 30 in this embodiment.
- a plurality of power receiving position detection units 70 are arranged. By arranging the plurality of power receiving position detectors 70 in this way, the position of the power receiving resonator 20 can be detected with high accuracy.
- the power receiving position detection unit 70 can detect the position of the power receiving resonator 20 by various methods exemplified below. (1) The power receiving resonator 20 is photographed, and the position of the power receiving resonator 20 is determined by image recognition. (2) The position of the power receiving resonator 20 is determined based on the reflected wave from the power receiving resonator 20 by emitting radio waves or light. (3) A beacon generator or the like is attached to the power receiving resonator 20, receives a signal from the power receiving resonator, and determines the position of the power receiving resonator 20.
- the power transmission resonator 10 and the relay resonator 30 may be included in the position detection target by the power receiving position detection unit 70. By doing so, it becomes possible to estimate these resonators 10 and 30 and the power receiving resonator 20 and their distances more accurately.
- the power receiving unit 200 itself may be configured to detect its own position.
- An example of the power receiving unit 200 having such a configuration is shown in FIG.
- the power receiving unit 200 of FIG. 9 includes a power receiving resonator 20, an output conversion unit 50 connected to the power reception resonator 20, a load 90 connected to the output conversion unit 50, and a power reception position detection unit 70.
- a communication unit 80 connected to the power receiving position detection unit 70.
- the communication unit 80 can transmit information (position information) indicating the power reception position detected by the power reception position detection unit 70 to the resonance control unit 600.
- the resonance control unit 600 determines the resonance condition of each relay resonator 30 based on the position information of the power receiving resonator 20.
- the parameter specifying the “resonance condition” can be, for example, information indicating the resonance frequency of each relay resonator 30, the coupling / non-coupling state with the resonance magnetic field by each relay resonator, and the like.
- the resonance adjustment circuit 60 connected to the second relay resonator 30-2 controls the resonance frequency of the second relay resonator 30-2 based on the resonance condition information received from the resonance control unit 600, and couples / Uncoupled condition (resonance condition) is realized.
- the resonance condition of the relay resonator can be switched at any time following the position change of the power receiving resonator 20.
- the resonance adjustment circuit 60 is connected only to the second relay resonator 30-2. However, if the resonance adjustment circuit 60 is connected to each of the plurality of relay resonators 30, The coupling / non-coupling to the resonant magnetic field by each relay unit 300 can be controlled. As a result, more efficient power transmission according to the arrangement of the power receiving unit 200 is possible.
- the resonance adjustment circuit 60 is connected to each of the first relay resonator 30-1 and the second relay resonator 30-2, the resonance condition of each relay resonator 30 is determined. A method will be described.
- FIG. 10 shows a configuration of a wireless power transmission apparatus in which a resonance adjustment circuit 60 is connected to each of the first relay resonator 30-1 and the second relay resonator 30-2. Also in the example shown in FIG. 10, the power transmission resonator 10 and the first relay resonator 30-1 can be coupled via the resonant magnetic field of the frequency f0, and the first relay resonator 30- It is also possible for the first and second relay resonators 30-2 to be coupled.
- FIG. 11A and FIG. 11B show a state in which the arrangement of the power receiving resonator 20 with respect to the wireless power transmission device 1 of FIG. 10 is different.
- the resonance frequency of all the relay resonators 30 may be set in the non-coupling frequency region.
- the number of relay resonators 30 it may be complicated to control the resonance frequencies of all the relay resonators 30 to the non-coupling frequency region. In such a case, only a part of the relay resonators 30-1 adjacent to the power transmission resonator 10 may be “uncoupled”.
- the power receiving resonator 20 is close to the second relay resonator 30-2.
- the power receiving resonator 20 can be coupled to the second relay resonator 30-2.
- the resonance frequency of the first relay resonator 30-1 is set to a value different from f0, and the first relay resonator 30-1 and the second relay resonator 30-2 are connected. If it is not coupled, it may not be possible to transmit power from the power transmission resonator 10 to the second relay resonator 30-2. In such a case, if the resonance frequency of the first relay resonator 30-1 is set to a value different from f0, the power receiving resonator 20 cannot be fed.
- the relay resonator 30 (first relay resonance in the example of FIG. 11B) required for feeding power to the relay resonator 30 (second relay resonator 30-2 in FIG. 11B) closest to the power receiving resonator 20 is provided.
- the device 30-1) controls the coupling at the resonance frequency f0 even if it is not closest to the power receiving resonator 20.
- the first relay Even if the resonance frequency of the resonator 30-1 is set to a value different from f0, the coupling between the power transmission resonator 10 and the second relay resonator 30-2 may be sufficiently strong. In such a case, the first relay resonator 30-1 may be uncoupled.
- the remaining relay resonators 30 coupled to each other cause power reception resonance from the power transmission resonator 10. It may be possible to supply power to the device 20. Further, it may be desirable from the viewpoint of power transmission efficiency to disengage unnecessary relay resonators 30.
- the unnecessary relay resonator 30 If the unnecessary relay resonator 30 is uncoupled, the distance between the coupled resonators increases, which causes power loss. On the other hand, power loss also occurs when the relay resonator 30 is generated in the process of receiving and releasing electromagnetic energy again. When the power loss generated in this relay process is larger than the power loss due to the distance extension between the relay resonators 30, it is desirable to reduce the number of relay resonators to be coupled.
- FIG. 12 shows a wireless power transmission system including four relay resonators 30-1, 30-2, 30-3, and 30-4.
- Four resonance adjustment circuits 60-1, 60-2, 60-3, 60-4 are connected to the four relay resonators 30-1, 30-2, 30-3, 30-4, respectively. .
- the resonator interval in the wireless power transmission system of FIG. 12 is narrower than the resonator interval in the wireless power transmission system of FIG.
- the third relay resonator 30-3 is disposed between the power transmission resonator 10 and the first relay resonator 30-1
- the fourth relay resonator 30-4 is the first relay resonator 30-4. It is arranged between the relay resonator 30-1 and the second relay resonator 30-2.
- the third relay resonator 30- The third and first relay resonators 30-1 and the power transmission resonator 10 can be coupled.
- the third relay resonator 30-3 can be coupled to the power transmission resonator 10, the first relay resonator 30-1, and the fourth relay resonator 30-4.
- the first relay resonator 30-1 can be coupled to the power transmission resonator 10, the third relay resonator 30-3, the fourth relay resonator 30-4, and the second relay resonator 30-2. .
- the fourth relay resonator 30-4 can be coupled to the third relay resonator 30-3, the first relay resonator 30-1, and the second relay resonator 30-2.
- the second relay resonator 30-2 can be coupled to the first relay resonator 30-1, the fourth relay resonator 30-4, and the power receiving resonator 20.
- the resonance frequencies of the third relay resonator 30-3 and the fourth relay resonator 30-4 may be set to values other than f0.
- the power receiving resonator 20 When the power receiving resonator 20 is small, it is desirable to arrange a plurality of relay resonators 30 densely. In such a case, it may be effective to reduce the number of relays by decoupling some of the relay resonators 30 from among the plurality of relay resonators 30.
- the relay resonator 30 closest to the power receiving resonator 20 is not coupled. It may be desirable to do so.
- FIG. 13 shows an example in which the size of the power receiving resonator 20 is substantially equal to the size of the relay resonator 30.
- the power receiving resonator 20 is located between the first relay resonator 30-1 and the second relay resonator 30-2, and is most distant from the second relay resonator 30-2. It is close.
- the power transmission resonator 10 and the first relay resonator 30-1 are coupled at the resonance frequency f0, and the first relay resonator 30-1 and the second relay resonator 30-2 are coupled. To do.
- the power receiving resonator 20 since the power receiving resonator 20 is large in size, it can be coupled not only to the closest second relay resonator 30-2 but also to the first relay resonator 30-1. For this reason, from the viewpoint of reducing the number of relays, it is desirable to supply power to the power receiving resonator 20 from the power transmission resonator 10 via only the first relay resonator 30-1. Therefore, the second relay resonator 30-2 is uncoupled at the resonance frequency f0 so that the second relay resonator 30-2 is not unnecessarily coupled to the first relay resonator 30-1 and the power receiving resonator 20. You may control so that it may become.
- the exchange of position information and resonance condition information can be performed wirelessly or by wire.
- the communication frequency band does not overlap with the resonance frequency of each resonator, the carrier wave frequency, and their harmonic frequencies (integer multiples of the resonance frequency).
- a carrier wave used for power transmission may be modulated and communication may be performed via the resonators 10, 20, and 30.
- the resonance control unit 600 may request authentication information from the power receiving unit 200 through communication, and permit power transmission only when appropriate authentication information is obtained from the power receiving unit 200.
- the information exchanged by communication among all or part of the resonance control unit 600, the power reception unit 200, and the relay unit 300 is not limited to the resonance condition information and the power reception position information, but authentication information and other information. May be included.
- Each resonator described above is represented by wiring wound in a square shape on a single plane in the accompanying drawings. This wiring constitutes an inductor of the resonator. A capacitive element (not shown) or the like is connected directly or in parallel to the inductor of the resonator.
- FIG. 14 shows a first relay resonator 30-1 made of a spiral inductor having a thickness in the z-axis direction.
- the second relay resonator 30-2 shown in FIG. 14 is not constituted by a closed loop circuit, but is constituted by a ring wiring having one end opened.
- the resonator surfaces of the resonators 10, 20, and 30 are parallel to the xy plane.
- the resonator surfaces of the resonators 10, 20, and 30 do not have to be parallel to the xy plane, and may face in any direction.
- the resonator surfaces of the resonators 10, 20, and 30 are preferably substantially parallel.
- substantially parallel means that the angle formed by the resonator surface is in the range of 0 ° to 30 °.
- wireless power transmission is possible even when the resonator surface forms an angle that cannot be said to be “substantially parallel” (over 30 ° to 60 ° or less, for example, about 45 °).
- the wireless power transmission device of this embodiment includes three power transmission resonators 10-1, 10-2, and 10-3.
- FIG. 15 shows the arrangement relationship of these power transmission resonators 10-1, 10-2, 10-3, and the description of the relay resonator is omitted.
- the resonator surfaces of the three power transmission resonators 10-1, 10-2, and 10-3 are parallel to the xy plane, the yz plane, and the zx plane, respectively.
- the three power transmitting resonators 10 are independent of the orientation (posture) of the power receiving resonator 20.
- -1, 10-2, 10-3 can transmit power to the power receiving resonator 20.
- the resonator surfaces of the plurality of relay resonators may be arranged in parallel to the xy plane as in the above-described embodiment, or may be arranged in parallel to the yz plane or the zx plane.
- a plurality of relay resonators parallel to each of the xy plane, the yz plane, and the zx plane may be arranged.
- a plurality of relay resonators having a resonator surface parallel to the xy plane, a plurality of relay resonators having a resonator surface parallel to the yz plane, and a plurality of relay resonances having a resonator surface parallel to the zx plane You may arrange
- the power reception unit 200 detects a resonance plane direction of the power reception resonator 20.
- a gyroscope may be provided.
- Information on the direction obtained as a result of detection by the sensor can be transmitted to the resonance control unit 600 via a communication unit included in the power receiving unit 200.
- the resonance control unit 600 transmits power from the power transmission resonators 10-1, 10-2, or 10-3 having the resonator surface in the direction in which the power reception efficiency of the power reception unit 200 is relatively highest.
- the relay resonator when a plurality of relay resonators having different resonator surface directions are arranged, the relay resonator having a resonator surface in a direction in which the power receiving efficiency is relatively highest among the plurality of relay resonators.
- the resonance frequency of 30 is set to f0, and the resonance frequencies of the other relay resonators 30 are set to values other than f0.
- the “arrangement of the power reception unit” includes not only the position of the power reception resonator 20 but also the resonance of the power reception resonator 20.
- the orientation (azimuth) of the vessel surface can be included.
- the resonance adjustment circuit 60 is connected to the relay resonator 30 and is used to adjust the resonance frequency of the relay unit 300.
- the resonance adjustment circuit 60 may be connected to the power transmission resonator 10 or the power reception resonator 20.
- FIG. 16 shows a configuration example of the power transmission unit 100 in which the resonance adjustment circuit 60 is connected between the carrier wave generation unit 40 and the power transmission resonator 10.
- FIG. 17 shows a configuration example of the power receiving unit 200 in which the resonance adjustment circuit 60 is connected between the power receiving resonator 20 and the output conversion unit 50.
- the wireless power transmission system in the present embodiment basically has the same configuration as that of the other embodiments, and the power transmission unit 100 and the power reception unit 200 have the configurations of FIGS. 16 and 17, respectively.
- the resonance frequency of the connected power transmission resonator 10 or power reception resonator 20 can be switched between f0 and f1 ( ⁇ f0).
- the resonance frequency of the power transmission resonator 10 is set to f1 by the resonance adjustment circuit 60
- the electromagnetic energy of the frequency f1 can be efficiently distributed in the peripheral space of the power transmission resonator 10.
- the power receiving unit 200 shown in FIG. 17 if the resonance frequency of the power receiving resonator 20 is set to f1 by the resonance adjustment circuit 60, the electromagnetic energy at the frequency f1 can be efficiently extracted.
- the relay resonator 30 can be controlled even when the resonance frequency is f0. Even if necessary, it becomes possible to perform necessary relay.
- the resonance condition of the relay resonator 30 for performing power transmission with the best efficiency may be different for each power receiving resonator 20.
- power can be transmitted to the plurality of power receiving resonators 20 in a time division manner.
- FIG. 18 is a diagram illustrating a configuration example of the wireless power transmission system according to the present embodiment.
- the wireless power transmission system of FIG. 18 includes a power transmission resonator 10 that resonates at a resonance frequency f0, a first relay resonator 30-1, a second relay resonator 30-2, and a first power reception resonator 20. -1 and a second power receiving resonator 20-2.
- the resonator surface of the power transmission resonator 10 is parallel to the xy plane, and the center of the resonator surface is located at the origin of the xyz coordinates.
- the first relay resonator 30-1 and the second relay resonator 30-2 also have their respective resonator planes parallel to the xy plane.
- the first power receiving resonator 20-1 is placed at a position close to the first relay resonator 30-1, and the second power receiving resonator 20-2 is the first power receiving resonator 20-2. 2 in the vicinity of the second relay resonator 30-2.
- one resonance adjustment circuit 60 can be connected not only to the second relay resonator 30-2 but also to the first power receiving resonator 20-1.
- the resonance adjustment circuit 60 is connected to the second relay resonator 30-2 and is not connected to the first power receiving resonator 20-1, but this connection can be switched.
- the resonance adjustment circuit 60 can be connected to the first power receiving resonator 20-1 by “coupling switching” using a switch (not shown).
- the resonance frequency f0 is set by setting the resonance frequency of the second relay resonator 30-2 to a frequency other than the resonance frequency f0. Then, it is preferable to control so that the first relay resonator 30-1 and the second relay resonator 30-2 are not coupled.
- the second relay resonator 30-2 is controlled to be coupled to the first relay resonator 30-1 at the resonance frequency f0. Is preferred. At this time, it is preferable that the first power receiving resonator 20-1 is not coupled to the first relay resonator 30-1 or the second relay resonator 30-2.
- the power feeding to the first power receiving resonator 20-1 and the second power receiving resonator 20-1 can be performed.
- Power feeding to the power receiving resonator 20-2 is alternately performed.
- FIG. 19 shows an example of a time chart for switching the resonance conditions of the first power receiving resonator 20-1 and the second relay resonator 30-2 in a time division manner.
- the resonance frequency of the first power receiving resonator 20-1 is set to f0
- the second power receiving resonator 20-1 The resonance frequency of the relay resonator 30-2 is set to a value other than f0 (non-coupling frequency region).
- f0 non-coupling frequency region
- the resonance frequency of the first power receiving resonator 20-1 is set to other than f0 (non-coupling frequency region), and The resonance frequency of the relay resonator 30-2 is set to f0.
- the second relay resonator 30-2 is coupled to the first relay resonator 30-1, power is supplied to the second power receiving resonator 20-2.
- the first power receiving resonator 20-1 is not coupled to the first relay resonator 30-1 or the second relay resonator 30-2, and therefore the first power receiving resonator 20- No power is supplied to 1.
- the period T1 and the period T2 are alternately repeated, so that the power is fed under a resonance condition in which the power feeding efficiency to each of the power receiving resonators 20-1 and 20-2 is the best. It can be carried out. However, since power is supplied to the first power receiving resonator 20-1 and the second power receiving resonator 20-2 alternately, power is supplied to each power receiving resonator intermittently.
- a rechargeable battery may be provided at the front stage of the load. Such a rechargeable battery is charged during a power supply period to a power receiving resonator provided with the rechargeable battery. The power can be stably supplied to the load by discharging the rechargeable battery during the period when the power supply to the power receiving resonator is stopped.
- the period T1 and the period T2 need not be set to the same length.
- the time ratio of the period T1 and the period T2 may be changed in proportion to the ratio of the amount of power required by the load connected to each of the power receiving resonators 20-1 and 20-2.
- the number of power receiving resonators 20 is not limited to two.
- power may be supplied to the three power receiving resonators 20-1, 20-2, and 20-3 in the periods T1, T2, and T3, respectively.
- resonance condition information that the resonance control unit 600 sends to each power receiving resonator 20 and the relay resonator 30. included.
- the resonance frequency difference between the resonators when the resonance frequency difference between the resonators is increased, these resonators are weakly coupled and can create a non-coupled state.
- the resonance frequency difference defines the coupling / non-coupling.
- FIG. 20 is a graph schematically showing the relationship between the reflection amount of the resonator and the frequency.
- the reflection amount is defined as a signal amplitude ratio (value between 0 and 1) of the reflection component with respect to the input signal amplitude to the resonator. That is, the reflection amount corresponds to the value (true value) of the S11 parameter of the resonator.
- the vertical axis of the graph shows the reflection amount when normalized with the minimum reflection amount of the resonator being zero.
- This normalized reflection amount is 1 for the total reflection amount
- Rmin for the reflection amount before normalization is the minimum
- x for the reflection amount before normalization
- the reflection amount after normalization Is represented by the following equation.
- the frequency at which the normalized reflection amount is 0 becomes the resonance frequency of the resonator.
- a curve (a) in FIG. 20 is a curve showing the reflection amount characteristic of the resonator having the resonance frequency f0.
- a frequency region A is defined in which the reflection amount is 0 or more and 1 or less and a certain value At (0 ⁇ At ⁇ 1).
- the reflection amount is equal to or less than At at frequencies included in the frequency region A, but the reflection amount exceeds At at frequencies outside the frequency region A.
- the curve (b) in FIG. 20 is a curve showing the relationship between the amount of reflection and the frequency when the resonance frequency of the resonator is set to a value lower than f0. Also for this curve (b), a frequency region B where the reflection amount is equal to or less than At is defined. Let f1 be the resonance frequency of the curve (b) when the maximum frequency in the frequency domain B matches the minimum frequency in the frequency domain A. Curve (c) in FIG. 20 is a curve showing the relationship between the amount of reflection and the frequency when the resonance frequency of the resonator is set to a value higher than f0. For this curve (c), a frequency region C in which the reflection amount is equal to or smaller than At is defined. Let f2 be the resonance frequency of the curve (c) when the minimum frequency in the frequency domain C matches the maximum frequency in the frequency domain A.
- the frequency region below f1 and the frequency region above f2 thus derived are defined as “non-coupled frequency regions” for the frequency f0.
- “decoupling” is defined as setting the resonance frequency within the “non-coupling frequency region”. Note that the coupling / non-coupling boundary varies depending on the set value of the reflection amount At. In order to weaken the coupling between the resonators as much as possible in the uncoupled state, it is desirable to set At to a value as large as possible, for example, 0.9 or more.
- the frequency at which non-coupling is achieved may be set so that the gain of the resonator is smaller than a predetermined value (for example, ⁇ 20 dB).
- the wireless power transmission device of the present invention can be applied to charging and supplying power to office equipment such as personal computers and notebook personal computers, AV equipment such as wall-mounted televisions and mobile AV equipment, hearing aids, and healthcare equipment. Further, the present invention can also be applied to charging / power feeding to a parked or running electric vehicle, an electric motorcycle, or a stopped or moving robot. Furthermore, the present invention can be applied to a wide range of fields such as a power collection system from solar cells and fuel cells, a connection point with equipment in a DC power supply system, and an alternative to an AC outlet.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radio Relay Systems (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
Description
以下、本発明の第1の実施形態における無線電力伝送装置を説明する。
次に、図6を参照しながら、本発明による無線電力伝送システムの他の実施形態を説明する。図6は、本実施形態における無線電力伝送装置1の構成例を示している。
(1)受電共振器20を撮影し、画像認識により受電共振器20の位置を決定する。
(2)電波または光を放出して受電共振器20からの反射波に基づいて受電共振器20の位置を決定する。
(3)受電共振器20にビーコン発生器など取り付け、受電共振器からの信号を受け取り、受電共振器20の位置を決定する。
次に、図15を参照しながら、本発明による無線電力伝送装置の更に他の実施形態を説明する。本実施形態の無線電力伝送装置は、3つの送電共振器10-1、10-2、10-3を備えている。図15は、これらの送電共振器10-1、10-2、10-3の配置関係を示しており、中継共振器の記載は省略されている。
上記の各実施形態では、共振調整回路60が中継共振器30に接続され、中継部300の共振周波数を調整するために使用されていた。しかし、共振調整回路60は、送電共振器10または受電共振器20に接続されていても良い。
以下、本発明による無線電力伝送システムの他の実施形態を説明する。
10-1 第1の送電共振器
10-2 第2の送電共振器
10-3 第3の送電共振器
20 受電共振器
20-1 第1の受電共振器
20-2 第2の受電共振器
30 中継共振器
30-1 第1の中継共振器
30-2 第2の中継共振器
30-3 第3の中継共振器
30-4 第4の中継共振器
40 搬送波発生部
45 電源
50 出力変換部
60 共振調整回路
60-1 第1の共振調整回路
60-2 第2の共振調整回路
60-3 第3の共振調整回路
60-4 第4の共振調整回路
62 プロセッサ
70 受電位置検出部
80 通信部
90 負荷
100 送電部
200 受電部
300 中継部
600 共振制御部
Claims (25)
- 共振磁界を介して送電部から受電部へ無線で電力伝送を行う無線電力伝送装置であって、
共振周波数f0で共振する送電部と、
前記共振周波数f0を含む複数の周波数から選択された周波数で共振し得る少なくとも1つの中継部と、
受電部の配置に応じて前記中継部の共振条件を特定する共振条件情報を出力し、前記共振条件情報に基づいて前記中継部の共振条件を制御する共振制御部と
を備える無線電力伝送装置。 - 前記少なくとも1つの中継部は、前記共振周波数f0を含む複数の周波数から選択された周波数で共振し得る第1から第n(nは2以上の整数)の中継部を含み、
前記共振制御部は、前記受電部の配置に応じて前記第1から第nの中継部の共振条件を特定する共振条件情報を出力し、前記共振条件情報に基づいて各中継部の共振条件を制御する、請求項1に記載の無線電力伝送装置。 - 前記共振制御部から前記中継部に前記共振条件情報を伝達する通信システムを備える、請求項1または2に記載の無線電力伝送装置。
- 前記受電部の位置を検出し、前記受電部の位置情報を出力する位置検出部を備える請求項1から3のいずれかに記載の無線電力伝送装置。
- 前記受電部の位置情報は、前記受電部に含まれる受電共振器の位置に関する情報である、請求項4に記載の無線電力伝送装置。
- 前記中継部は、
前記共振周波数f0で共振する中継共振器と、
前記共振制御部から前記共振条件情報を受け取り、前記共振条件情報に基づいて前記中継共振器の共振条件を変化させる共振調整回路と
を備える、請求項1から5のいずれかに記載の無線電力伝送装置。 - 前記共振制御部および前記中継部は、それぞれ、通信部を備え、
前記中継部は、前記通信部を介して、前記共振制御部から前記共振条件情報を受け取る、請求項1から6のいずれかに記載の無線電力伝送装置。 - 前記位置検出部は、前記中継部に設けられており、
前記中継部が備える前記通信部は、前記位置検出部が出力した前記受電部の位置情報を、前記共振制御部が備える前記通信部に伝達する、請求項7に記載の無線電力伝送装置。 - 前記共振制御部および前記位置検出部は、それぞれ、通信部を備え、
前記位置検出部が備える前記通信部は、前記受電部の位置情報を前記共振制御部が備える前記通信部に伝達する、請求項1から8のいずれかに記載の無線電力伝送装置。 - 前記共振制御部は、前記受電部の位置情報に基づいて、前記共振周波数f0で共振させない中継部を選択し、当該選択の結果に基づいて前記共振条件情報を出力する、請求項1から9に記載の無線電力伝送装置。
- 前記共振制御部は、前記受電部に最も近接する中継部以外の少なくとも1つの中継部が前記共振周波数f0で共振しないようにする、請求項1から10のいずれかに記載の無線電力伝送装置。
- 前記共振制御部は、前記受電部が前記送電部に近接するとき、前記送電部に最も近接する中継部が前記共振周波数f0で共振しないようにする、請求項1から11のいずれかに記載の無線電力伝送装置。
- 前記共振制御部は、隣接する2つの中継部に挟まれた領域内に前記受電部が位置するとき、前記送電部と前記受電部との間に位置する少なくとも1つの中継部が前記共振周波数f0で共振するようにする、請求項1から12のいずれかに記載の無線電力伝送装置。
- 前記共振制御部は、前記送電部から前記受電部に直接に電力伝送を行うことが可能なとき、前記送電部と前記受電部とに挟まれる領域に存在するすべての前記中継部が前記共振周波数f0で共振しないようにする、請求項1から13のいずれかに記載の無線電力伝送装置。
- 前記共振制御部は、前記送電部から前記受電部に直接に電力伝送を行うことが可能なとき、前記受電部に最も近接する前記中継部が前記共振周波数f0で共振しないようにする、請求項1から14のいずれかに記載の無線電力伝送装置。
- 前記送電部は、
前記共振周波数f0の共振信号を生成する共振信号生成部と、
前記共振信号に基づいて共振磁界を生成する送電共振器と、
を備える、請求項1から15のいずれかに記載の無線電力伝送装置。 - 前記送電部は、前記送電共振器の共振周波数を変化させる共振調整回路を備える、請求項16に記載の無線電力伝送装置。
- 前記送電部および前記中継部の少なくとも一部は、建物壁、床、または天井内に埋め込まれている請求項1から17に記載の無線電力伝送装置。
- 請求項1から18のいずれかに記載の無線電力伝送装置と組み合わせて使用される受電部を備える装置であって、
前記受電部は、
前記共振周波数f0で共振することにより、前記無線電力伝送装置の前記送電部または前記中継部からエネルギを受け取る受電共振器と、
前記エネルギを電源エネルギに変換する出力変換部と、
を備える、装置。 - 前記受電部は、
前記共振制御部から共振条件情報を受け取ることが可能な通信部と、
前記共振条件情報に基づいて前記受電共振器を制御する共振調整回路と、
を備える、請求項19に記載の装置。 - 前記受電部は、
前記受電部の位置を検出し、当該検出結果に基づいて生成した位置情報を出力する位置検出部を備え、
前記通信部によって前記位置情報を前記共振制御部に伝達する、請求項20に記載の装置。 - 共振周波数f0で共振する送電部と、
前記共振周波数f0を含む複数の周波数から選択された周波数で共振し得る少なくとも1つの中継部と、
前記共振周波数f0で共振する少なくとも1つの受電部と、
前記受電部の配置に応じて前記中継部の共振条件を特定する共振条件情報を出力し、前記共振条件情報に基づいて前記中継部の共振条件を制御する共振制御部と
を備える無線電力伝送システム。 - 前記少なくとも1つの受電部は、
前記共振周波数f0を含む複数の周波数から選択された周波数で共振し得る複数の受電部を含み、
前記共振制御部は、
前記複数の受電部の配置に応じて前記中継部および前記複数の受電部の共振条件を特定する共振条件情報を出力し、前記共振条件情報に基づいて前記中継部および前記受電部の共振条件を制御し、前記複数の受電部に対して時分割で給電を行う、請求項22に記載の無線電力伝送システム。 - 前記送電部は、相互に直交する複数の送電共振器を有している、請求項22または23に記載の無線電力伝送システム。
- 前記受電部に含まれる受電共振器の方向を検出し、当該検出結果に基づく方向情報を出力する方向検出部を備えており、
前記送電部は、前記方向情報に基づいて前記複数の送電共振器から選択された1つの送電共振器を前記共振周波数f0で共振させる、請求項24に記載の無線電力伝送システム。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201180003066.0A CN102484397B (zh) | 2010-07-02 | 2011-06-29 | 无线电力传输装置 |
JP2012505537A JP5180406B2 (ja) | 2010-07-02 | 2011-06-29 | 無線電力伝送装置 |
EP11800429.0A EP2562911B1 (en) | 2010-07-02 | 2011-06-29 | Contactless power transmission device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US36097810P | 2010-07-02 | 2010-07-02 | |
US61/360,978 | 2010-07-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012001959A1 true WO2012001959A1 (ja) | 2012-01-05 |
Family
ID=45399171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/003696 WO2012001959A1 (ja) | 2010-07-02 | 2011-06-29 | 無線電力伝送装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8970070B2 (ja) |
EP (1) | EP2562911B1 (ja) |
JP (1) | JP5180406B2 (ja) |
CN (1) | CN102484397B (ja) |
WO (1) | WO2012001959A1 (ja) |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013169129A (ja) * | 2012-02-17 | 2013-08-29 | Hitachi Maxell Ltd | 非接触電力伝送装置 |
CN103296780A (zh) * | 2012-03-01 | 2013-09-11 | 深圳光启创新技术有限公司 | 一种内窥镜胶囊供电系统 |
CN103296777A (zh) * | 2012-03-01 | 2013-09-11 | 深圳光启创新技术有限公司 | 一种内窥镜胶囊供电系统 |
JP2013188002A (ja) * | 2012-03-07 | 2013-09-19 | Hitachi Maxell Ltd | 非接触電力伝送システム及び非接触電力伝送方法 |
JP2013188016A (ja) * | 2012-03-08 | 2013-09-19 | Hitachi Maxell Ltd | 非接触電力伝送装置及び非接触電力伝送方法 |
KR20130107955A (ko) * | 2012-03-23 | 2013-10-02 | 삼성전자주식회사 | 공진 주파수를 조정해서 커플링 효율을 높이는 무전전력 전송 시스템 및 방법 |
CN103462640A (zh) * | 2013-09-30 | 2013-12-25 | 苏州边枫电子科技有限公司 | 导声胶的无线智能加热装置 |
WO2014115223A1 (ja) * | 2013-01-24 | 2014-07-31 | パナソニック株式会社 | 非接触電力伝送システム |
WO2014118972A1 (ja) * | 2013-02-01 | 2014-08-07 | パイオニア株式会社 | 非接触給電装置、非接触給電方法及びコンピュータプログラム |
JP2014187848A (ja) * | 2013-03-25 | 2014-10-02 | Hitachi Maxell Ltd | 非接触電力伝送システム |
KR20150004474A (ko) * | 2013-07-02 | 2015-01-13 | 삼성전자주식회사 | 중계 공진기를 포함하는 무선 전력 전송 방법 및 시스템 |
JPWO2013042291A1 (ja) * | 2011-09-21 | 2015-03-26 | 日本電気株式会社 | 無線給電システム及び無線給電方法 |
JP2015061325A (ja) * | 2013-09-17 | 2015-03-30 | 日立マクセル株式会社 | 非接触電力伝送装置及び非接触電力伝送方法 |
JPWO2014076801A1 (ja) * | 2012-11-15 | 2016-09-08 | 中国電力株式会社 | 非接触給電システム、及び非接触給電システムの制御方法 |
JP2017050954A (ja) * | 2015-09-01 | 2017-03-09 | 株式会社Lixil | 屋外給電装置 |
JP2017070177A (ja) * | 2015-10-02 | 2017-04-06 | パナソニックIpマネジメント株式会社 | 無線電力伝送システム |
JP2017221090A (ja) * | 2016-06-10 | 2017-12-14 | 株式会社Lixil | ワイヤレス給電システム |
JP2018032876A (ja) * | 2017-11-17 | 2018-03-01 | 富士通コンポーネント株式会社 | 無線受電装置 |
KR20190137796A (ko) * | 2017-03-07 | 2019-12-11 | 파워매트 테크놀로지스 엘티디. | 무선 전력 충전 시스템 |
US10547216B2 (en) | 2015-12-25 | 2020-01-28 | Mitsubishi Electric Corporation | Power receiving apparatus, power feeding system, power feeding method, power source management method, computer readable recording medium storing power feeding program, and computer readable recording medium storing power source management program |
JP2020178531A (ja) * | 2016-06-30 | 2020-10-29 | パナソニック株式会社 | 送電装置 |
JP2022119155A (ja) * | 2021-02-03 | 2022-08-16 | 寶トク科技股フン有限公司 | マウスパッド |
US11848569B2 (en) | 2017-03-07 | 2023-12-19 | Powermat Technologies Ltd. | System for wireless power charging |
Families Citing this family (233)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101753607B1 (ko) * | 2010-08-24 | 2017-07-04 | 삼성전자주식회사 | 방사형 무선 전력 전송 및 수신 장치 |
US9054544B2 (en) | 2010-12-22 | 2015-06-09 | Semiconductor Energy Laboratory Co., Ltd. | Power feeding device, power receiving device, and wireless power feed system |
JP6219285B2 (ja) * | 2011-09-07 | 2017-10-25 | ソラス パワー インコーポレイテッドSolace Power Inc. | 電界を用いたワイヤレス電力送信システムおよび電力送信方法 |
KR101241712B1 (ko) * | 2011-09-09 | 2013-03-11 | 엘지이노텍 주식회사 | 무선 전력 수신 장치 및 그 방법 |
WO2013035190A1 (ja) * | 2011-09-09 | 2013-03-14 | 中国電力株式会社 | 非接触給電システム、及び非接触給電方法 |
KR101305579B1 (ko) * | 2011-09-09 | 2013-09-09 | 엘지이노텍 주식회사 | 무선전력 중계장치 및 무선전력 전송 장치 |
KR101808086B1 (ko) * | 2011-10-24 | 2017-12-14 | 삼성전자주식회사 | 무선 전력 전송을 이용한 사운드 시스템 |
JP5939780B2 (ja) * | 2011-12-08 | 2016-06-22 | キヤノン株式会社 | 電子機器 |
US8994224B2 (en) | 2012-01-27 | 2015-03-31 | Building Materials Investment Corporation | Solar roof shingles and underlayment with wireless power transfer |
KR102121919B1 (ko) * | 2012-02-29 | 2020-06-11 | 한국전자통신연구원 | 무선 전력 전송 장치 |
US20130300205A1 (en) * | 2012-05-09 | 2013-11-14 | Samsung Electronics Co., Ltd. | Method and apparatus for 3d orientation-free wireless power transfer |
US9939864B1 (en) | 2014-08-21 | 2018-04-10 | Energous Corporation | System and method to control a wireless power transmission system by configuration of wireless power transmission control parameters |
US9252628B2 (en) | 2013-05-10 | 2016-02-02 | Energous Corporation | Laptop computer as a transmitter for wireless charging |
US9867062B1 (en) | 2014-07-21 | 2018-01-09 | Energous Corporation | System and methods for using a remote server to authorize a receiving device that has requested wireless power and to determine whether another receiving device should request wireless power in a wireless power transmission system |
US10199835B2 (en) | 2015-12-29 | 2019-02-05 | Energous Corporation | Radar motion detection using stepped frequency in wireless power transmission system |
US9853692B1 (en) | 2014-05-23 | 2017-12-26 | Energous Corporation | Systems and methods for wireless power transmission |
US10038337B1 (en) | 2013-09-16 | 2018-07-31 | Energous Corporation | Wireless power supply for rescue devices |
US10128699B2 (en) | 2014-07-14 | 2018-11-13 | Energous Corporation | Systems and methods of providing wireless power using receiver device sensor inputs |
US10141791B2 (en) | 2014-05-07 | 2018-11-27 | Energous Corporation | Systems and methods for controlling communications during wireless transmission of power using application programming interfaces |
US20140008993A1 (en) | 2012-07-06 | 2014-01-09 | DvineWave Inc. | Methodology for pocket-forming |
US9882430B1 (en) | 2014-05-07 | 2018-01-30 | Energous Corporation | Cluster management of transmitters in a wireless power transmission system |
US10223717B1 (en) | 2014-05-23 | 2019-03-05 | Energous Corporation | Systems and methods for payment-based authorization of wireless power transmission service |
US9887584B1 (en) | 2014-08-21 | 2018-02-06 | Energous Corporation | Systems and methods for a configuration web service to provide configuration of a wireless power transmitter within a wireless power transmission system |
US9876394B1 (en) | 2014-05-07 | 2018-01-23 | Energous Corporation | Boost-charger-boost system for enhanced power delivery |
US9900057B2 (en) | 2012-07-06 | 2018-02-20 | Energous Corporation | Systems and methods for assigning groups of antenas of a wireless power transmitter to different wireless power receivers, and determining effective phases to use for wirelessly transmitting power using the assigned groups of antennas |
US10206185B2 (en) | 2013-05-10 | 2019-02-12 | Energous Corporation | System and methods for wireless power transmission to an electronic device in accordance with user-defined restrictions |
US10103582B2 (en) | 2012-07-06 | 2018-10-16 | Energous Corporation | Transmitters for wireless power transmission |
US9812890B1 (en) | 2013-07-11 | 2017-11-07 | Energous Corporation | Portable wireless charging pad |
US10063105B2 (en) | 2013-07-11 | 2018-08-28 | Energous Corporation | Proximity transmitters for wireless power charging systems |
US9843213B2 (en) | 2013-08-06 | 2017-12-12 | Energous Corporation | Social power sharing for mobile devices based on pocket-forming |
US9438045B1 (en) | 2013-05-10 | 2016-09-06 | Energous Corporation | Methods and systems for maximum power point transfer in receivers |
US9124125B2 (en) | 2013-05-10 | 2015-09-01 | Energous Corporation | Wireless power transmission with selective range |
US10063064B1 (en) | 2014-05-23 | 2018-08-28 | Energous Corporation | System and method for generating a power receiver identifier in a wireless power network |
US10211674B1 (en) | 2013-06-12 | 2019-02-19 | Energous Corporation | Wireless charging using selected reflectors |
US10965164B2 (en) | 2012-07-06 | 2021-03-30 | Energous Corporation | Systems and methods of wirelessly delivering power to a receiver device |
US10090886B1 (en) | 2014-07-14 | 2018-10-02 | Energous Corporation | System and method for enabling automatic charging schedules in a wireless power network to one or more devices |
US9859756B2 (en) | 2012-07-06 | 2018-01-02 | Energous Corporation | Transmittersand methods for adjusting wireless power transmission based on information from receivers |
US12057715B2 (en) | 2012-07-06 | 2024-08-06 | Energous Corporation | Systems and methods of wirelessly delivering power to a wireless-power receiver device in response to a change of orientation of the wireless-power receiver device |
US9876379B1 (en) | 2013-07-11 | 2018-01-23 | Energous Corporation | Wireless charging and powering of electronic devices in a vehicle |
US10263432B1 (en) | 2013-06-25 | 2019-04-16 | Energous Corporation | Multi-mode transmitter with an antenna array for delivering wireless power and providing Wi-Fi access |
US9899861B1 (en) | 2013-10-10 | 2018-02-20 | Energous Corporation | Wireless charging methods and systems for game controllers, based on pocket-forming |
US10090699B1 (en) | 2013-11-01 | 2018-10-02 | Energous Corporation | Wireless powered house |
US10992187B2 (en) | 2012-07-06 | 2021-04-27 | Energous Corporation | System and methods of using electromagnetic waves to wirelessly deliver power to electronic devices |
US9966765B1 (en) | 2013-06-25 | 2018-05-08 | Energous Corporation | Multi-mode transmitter |
US9876648B2 (en) | 2014-08-21 | 2018-01-23 | Energous Corporation | System and method to control a wireless power transmission system by configuration of wireless power transmission control parameters |
US10218227B2 (en) | 2014-05-07 | 2019-02-26 | Energous Corporation | Compact PIFA antenna |
US10141768B2 (en) | 2013-06-03 | 2018-11-27 | Energous Corporation | Systems and methods for maximizing wireless power transfer efficiency by instructing a user to change a receiver device's position |
US9906065B2 (en) | 2012-07-06 | 2018-02-27 | Energous Corporation | Systems and methods of transmitting power transmission waves based on signals received at first and second subsets of a transmitter's antenna array |
US10148097B1 (en) | 2013-11-08 | 2018-12-04 | Energous Corporation | Systems and methods for using a predetermined number of communication channels of a wireless power transmitter to communicate with different wireless power receivers |
US9891669B2 (en) | 2014-08-21 | 2018-02-13 | Energous Corporation | Systems and methods for a configuration web service to provide configuration of a wireless power transmitter within a wireless power transmission system |
US9973021B2 (en) | 2012-07-06 | 2018-05-15 | Energous Corporation | Receivers for wireless power transmission |
US9948135B2 (en) | 2015-09-22 | 2018-04-17 | Energous Corporation | Systems and methods for identifying sensitive objects in a wireless charging transmission field |
US10230266B1 (en) | 2014-02-06 | 2019-03-12 | Energous Corporation | Wireless power receivers that communicate status data indicating wireless power transmission effectiveness with a transmitter using a built-in communications component of a mobile device, and methods of use thereof |
US10199849B1 (en) | 2014-08-21 | 2019-02-05 | Energous Corporation | Method for automatically testing the operational status of a wireless power receiver in a wireless power transmission system |
US9831718B2 (en) | 2013-07-25 | 2017-11-28 | Energous Corporation | TV with integrated wireless power transmitter |
US10291066B1 (en) | 2014-05-07 | 2019-05-14 | Energous Corporation | Power transmission control systems and methods |
US10128693B2 (en) | 2014-07-14 | 2018-11-13 | Energous Corporation | System and method for providing health safety in a wireless power transmission system |
US9887739B2 (en) | 2012-07-06 | 2018-02-06 | Energous Corporation | Systems and methods for wireless power transmission by comparing voltage levels associated with power waves transmitted by antennas of a plurality of antennas of a transmitter to determine appropriate phase adjustments for the power waves |
US11502551B2 (en) | 2012-07-06 | 2022-11-15 | Energous Corporation | Wirelessly charging multiple wireless-power receivers using different subsets of an antenna array to focus energy at different locations |
US10063106B2 (en) | 2014-05-23 | 2018-08-28 | Energous Corporation | System and method for a self-system analysis in a wireless power transmission network |
US9941747B2 (en) | 2014-07-14 | 2018-04-10 | Energous Corporation | System and method for manually selecting and deselecting devices to charge in a wireless power network |
US10124754B1 (en) | 2013-07-19 | 2018-11-13 | Energous Corporation | Wireless charging and powering of electronic sensors in a vehicle |
US9893768B2 (en) | 2012-07-06 | 2018-02-13 | Energous Corporation | Methodology for multiple pocket-forming |
US9847679B2 (en) | 2014-05-07 | 2017-12-19 | Energous Corporation | System and method for controlling communication between wireless power transmitter managers |
US10992185B2 (en) | 2012-07-06 | 2021-04-27 | Energous Corporation | Systems and methods of using electromagnetic waves to wirelessly deliver power to game controllers |
US9859797B1 (en) | 2014-05-07 | 2018-01-02 | Energous Corporation | Synchronous rectifier design for wireless power receiver |
US9853458B1 (en) | 2014-05-07 | 2017-12-26 | Energous Corporation | Systems and methods for device and power receiver pairing |
US9923386B1 (en) | 2012-07-06 | 2018-03-20 | Energous Corporation | Systems and methods for wireless power transmission by modifying a number of antenna elements used to transmit power waves to a receiver |
US10211680B2 (en) | 2013-07-19 | 2019-02-19 | Energous Corporation | Method for 3 dimensional pocket-forming |
US20150326070A1 (en) | 2014-05-07 | 2015-11-12 | Energous Corporation | Methods and Systems for Maximum Power Point Transfer in Receivers |
US9893554B2 (en) | 2014-07-14 | 2018-02-13 | Energous Corporation | System and method for providing health safety in a wireless power transmission system |
US10075008B1 (en) | 2014-07-14 | 2018-09-11 | Energous Corporation | Systems and methods for manually adjusting when receiving electronic devices are scheduled to receive wirelessly delivered power from a wireless power transmitter in a wireless power network |
US9806564B2 (en) | 2014-05-07 | 2017-10-31 | Energous Corporation | Integrated rectifier and boost converter for wireless power transmission |
US9847677B1 (en) | 2013-10-10 | 2017-12-19 | Energous Corporation | Wireless charging and powering of healthcare gadgets and sensors |
US9825674B1 (en) | 2014-05-23 | 2017-11-21 | Energous Corporation | Enhanced transmitter that selects configurations of antenna elements for performing wireless power transmission and receiving functions |
US9941754B2 (en) | 2012-07-06 | 2018-04-10 | Energous Corporation | Wireless power transmission with selective range |
US10008889B2 (en) | 2014-08-21 | 2018-06-26 | Energous Corporation | Method for automatically testing the operational status of a wireless power receiver in a wireless power transmission system |
US10224758B2 (en) | 2013-05-10 | 2019-03-05 | Energous Corporation | Wireless powering of electronic devices with selective delivery range |
US9838083B2 (en) | 2014-07-21 | 2017-12-05 | Energous Corporation | Systems and methods for communication with remote management systems |
US9899873B2 (en) | 2014-05-23 | 2018-02-20 | Energous Corporation | System and method for generating a power receiver identifier in a wireless power network |
US9871398B1 (en) | 2013-07-01 | 2018-01-16 | Energous Corporation | Hybrid charging method for wireless power transmission based on pocket-forming |
US20150042265A1 (en) * | 2013-05-10 | 2015-02-12 | DvineWave Inc. | Wireless powering of electronic devices |
US10256657B2 (en) | 2015-12-24 | 2019-04-09 | Energous Corporation | Antenna having coaxial structure for near field wireless power charging |
US10205239B1 (en) | 2014-05-07 | 2019-02-12 | Energous Corporation | Compact PIFA antenna |
US9843201B1 (en) | 2012-07-06 | 2017-12-12 | Energous Corporation | Wireless power transmitter that selects antenna sets for transmitting wireless power to a receiver based on location of the receiver, and methods of use thereof |
US10439448B2 (en) | 2014-08-21 | 2019-10-08 | Energous Corporation | Systems and methods for automatically testing the communication between wireless power transmitter and wireless power receiver |
US10186913B2 (en) | 2012-07-06 | 2019-01-22 | Energous Corporation | System and methods for pocket-forming based on constructive and destructive interferences to power one or more wireless power receivers using a wireless power transmitter including a plurality of antennas |
US9912199B2 (en) | 2012-07-06 | 2018-03-06 | Energous Corporation | Receivers for wireless power transmission |
US10270261B2 (en) | 2015-09-16 | 2019-04-23 | Energous Corporation | Systems and methods of object detection in wireless power charging systems |
US10050462B1 (en) | 2013-08-06 | 2018-08-14 | Energous Corporation | Social power sharing for mobile devices based on pocket-forming |
US9954374B1 (en) | 2014-05-23 | 2018-04-24 | Energous Corporation | System and method for self-system analysis for detecting a fault in a wireless power transmission Network |
US9368020B1 (en) | 2013-05-10 | 2016-06-14 | Energous Corporation | Off-premises alert system and method for wireless power receivers in a wireless power network |
US10291055B1 (en) | 2014-12-29 | 2019-05-14 | Energous Corporation | Systems and methods for controlling far-field wireless power transmission based on battery power levels of a receiving device |
US10381880B2 (en) | 2014-07-21 | 2019-08-13 | Energous Corporation | Integrated antenna structure arrays for wireless power transmission |
US9882427B2 (en) | 2013-05-10 | 2018-01-30 | Energous Corporation | Wireless power delivery using a base station to control operations of a plurality of wireless power transmitters |
US9824815B2 (en) | 2013-05-10 | 2017-11-21 | Energous Corporation | Wireless charging and powering of healthcare gadgets and sensors |
US9793758B2 (en) | 2014-05-23 | 2017-10-17 | Energous Corporation | Enhanced transmitter using frequency control for wireless power transmission |
US9941707B1 (en) | 2013-07-19 | 2018-04-10 | Energous Corporation | Home base station for multiple room coverage with multiple transmitters |
US10312715B2 (en) | 2015-09-16 | 2019-06-04 | Energous Corporation | Systems and methods for wireless power charging |
US9787103B1 (en) | 2013-08-06 | 2017-10-10 | Energous Corporation | Systems and methods for wirelessly delivering power to electronic devices that are unable to communicate with a transmitter |
US9859757B1 (en) | 2013-07-25 | 2018-01-02 | Energous Corporation | Antenna tile arrangements in electronic device enclosures |
US10193396B1 (en) | 2014-05-07 | 2019-01-29 | Energous Corporation | Cluster management of transmitters in a wireless power transmission system |
US10211682B2 (en) | 2014-05-07 | 2019-02-19 | Energous Corporation | Systems and methods for controlling operation of a transmitter of a wireless power network based on user instructions received from an authenticated computing device powered or charged by a receiver of the wireless power network |
US9143000B2 (en) | 2012-07-06 | 2015-09-22 | Energous Corporation | Portable wireless charging pad |
US10224982B1 (en) | 2013-07-11 | 2019-03-05 | Energous Corporation | Wireless power transmitters for transmitting wireless power and tracking whether wireless power receivers are within authorized locations |
US9991741B1 (en) | 2014-07-14 | 2018-06-05 | Energous Corporation | System for tracking and reporting status and usage information in a wireless power management system |
US9893555B1 (en) | 2013-10-10 | 2018-02-13 | Energous Corporation | Wireless charging of tools using a toolbox transmitter |
US10243414B1 (en) | 2014-05-07 | 2019-03-26 | Energous Corporation | Wearable device with wireless power and payload receiver |
DE102012216417A1 (de) * | 2012-09-14 | 2014-03-20 | Panasonic Corporation | Kabelloses Ladesystem mit induktiver Kopplung |
US9397518B1 (en) * | 2013-02-22 | 2016-07-19 | Daniel Theobald | Wirelessly transferring energy to a mobile device |
JP2014168358A (ja) * | 2013-02-28 | 2014-09-11 | Nitto Denko Corp | 無線電力伝送装置、無線電力伝送装置における入力インピーダンスの負荷変動応答性の調整方法、及び、無線電力伝送装置の製造方法 |
DE102014103487A1 (de) * | 2013-03-15 | 2014-09-18 | Flextronics Ap Llc | Kippfrequenzmodus für magnetische, resonante Mehrfachenergieübertragung |
DE102014103484A1 (de) * | 2013-03-15 | 2014-09-18 | Flextronics Ap Llc | Kippfrequenzmodus für magnetische, resonante Energieübertragung |
WO2014147714A1 (ja) * | 2013-03-18 | 2014-09-25 | 株式会社 東芝 | 電力中継台 |
CN103248094A (zh) * | 2013-05-08 | 2013-08-14 | 上海安费诺永亿通讯电子有限公司 | 一种增强型无线充电系统 |
US9866279B2 (en) | 2013-05-10 | 2018-01-09 | Energous Corporation | Systems and methods for selecting which power transmitter should deliver wireless power to a receiving device in a wireless power delivery network |
US9843763B2 (en) | 2013-05-10 | 2017-12-12 | Energous Corporation | TV system with wireless power transmitter |
US9819230B2 (en) | 2014-05-07 | 2017-11-14 | Energous Corporation | Enhanced receiver for wireless power transmission |
US9537357B2 (en) | 2013-05-10 | 2017-01-03 | Energous Corporation | Wireless sound charging methods and systems for game controllers, based on pocket-forming |
US9538382B2 (en) | 2013-05-10 | 2017-01-03 | Energous Corporation | System and method for smart registration of wireless power receivers in a wireless power network |
US9419443B2 (en) | 2013-05-10 | 2016-08-16 | Energous Corporation | Transducer sound arrangement for pocket-forming |
US10103552B1 (en) | 2013-06-03 | 2018-10-16 | Energous Corporation | Protocols for authenticated wireless power transmission |
US10003211B1 (en) | 2013-06-17 | 2018-06-19 | Energous Corporation | Battery life of portable electronic devices |
US10021523B2 (en) | 2013-07-11 | 2018-07-10 | Energous Corporation | Proximity transmitters for wireless power charging systems |
KR102107768B1 (ko) * | 2013-07-24 | 2020-05-07 | 엘지이노텍 주식회사 | 보조 전원을 내장한 무선 충전 장치와 보조 전원 장치 |
US9979440B1 (en) | 2013-07-25 | 2018-05-22 | Energous Corporation | Antenna tile arrangements configured to operate as one functional unit |
CN104578188B (zh) * | 2013-10-09 | 2018-03-02 | 鸿富锦精密电子(天津)有限公司 | 无线充电系统 |
US9935482B1 (en) | 2014-02-06 | 2018-04-03 | Energous Corporation | Wireless power transmitters that transmit at determined times based on power availability and consumption at a receiving mobile device |
US10075017B2 (en) | 2014-02-06 | 2018-09-11 | Energous Corporation | External or internal wireless power receiver with spaced-apart antenna elements for charging or powering mobile devices using wirelessly delivered power |
US9787102B2 (en) * | 2014-02-12 | 2017-10-10 | The University Of Hong Kong | Auxiliary circuits for selection and enhancement of multi-frequency wireless power transfer to multiple loads |
US11492114B1 (en) * | 2014-03-15 | 2022-11-08 | Micro Mobio Corporation | Handy base station with through barrier radio frequency transmission system and method |
JP5975359B2 (ja) * | 2014-04-23 | 2016-08-23 | パナソニックIpマネジメント株式会社 | ワイヤレス給電方法及びワイヤレス給電システム |
US9966784B2 (en) | 2014-06-03 | 2018-05-08 | Energous Corporation | Systems and methods for extending battery life of portable electronic devices charged by sound |
US10158257B2 (en) | 2014-05-01 | 2018-12-18 | Energous Corporation | System and methods for using sound waves to wirelessly deliver power to electronic devices |
WO2015167055A1 (ko) * | 2014-05-02 | 2015-11-05 | 엘에스전선 주식회사 | 무선 전력 중계 장치 및 무선 전력 전송 시스템 |
CN106256069B (zh) * | 2014-05-02 | 2018-12-14 | Ls电线有限公司 | 无线电力中继装置以及无线电力传输系统 |
US10170917B1 (en) | 2014-05-07 | 2019-01-01 | Energous Corporation | Systems and methods for managing and controlling a wireless power network by establishing time intervals during which receivers communicate with a transmitter |
US10153645B1 (en) | 2014-05-07 | 2018-12-11 | Energous Corporation | Systems and methods for designating a master power transmitter in a cluster of wireless power transmitters |
US9973008B1 (en) | 2014-05-07 | 2018-05-15 | Energous Corporation | Wireless power receiver with boost converters directly coupled to a storage element |
US10153653B1 (en) | 2014-05-07 | 2018-12-11 | Energous Corporation | Systems and methods for using application programming interfaces to control communications between a transmitter and a receiver |
US9800172B1 (en) | 2014-05-07 | 2017-10-24 | Energous Corporation | Integrated rectifier and boost converter for boosting voltage received from wireless power transmission waves |
CN103997087B (zh) * | 2014-05-08 | 2015-12-09 | 中国矿业大学 | 一种电动汽车无绳充放电系统及其运行方法 |
US9876536B1 (en) | 2014-05-23 | 2018-01-23 | Energous Corporation | Systems and methods for assigning groups of antennas to transmit wireless power to different wireless power receivers |
JP2017520231A (ja) | 2014-06-26 | 2017-07-20 | ソレース・パワー・インコーポレイテッド | ワイヤレス電場電力伝送システム、そのための送信器及び受信器、並びにワイヤレスに電力を伝送するための方法 |
US9871301B2 (en) | 2014-07-21 | 2018-01-16 | Energous Corporation | Integrated miniature PIFA with artificial magnetic conductor metamaterials |
US10068703B1 (en) | 2014-07-21 | 2018-09-04 | Energous Corporation | Integrated miniature PIFA with artificial magnetic conductor metamaterials |
US10116143B1 (en) | 2014-07-21 | 2018-10-30 | Energous Corporation | Integrated antenna arrays for wireless power transmission |
KR101631669B1 (ko) * | 2014-08-06 | 2016-06-17 | 주식회사 맵스 | 공진 주파수 조정이 가능한 자기공명 무선 전력 전송장치 |
KR101530491B1 (ko) * | 2014-08-18 | 2015-06-22 | 숭실대학교산학협력단 | 칩 간 무선 전송을 위한 무선 칩 |
US9965009B1 (en) | 2014-08-21 | 2018-05-08 | Energous Corporation | Systems and methods for assigning a power receiver to individual power transmitters based on location of the power receiver |
US9917477B1 (en) | 2014-08-21 | 2018-03-13 | Energous Corporation | Systems and methods for automatically testing the communication between power transmitter and wireless receiver |
KR102236047B1 (ko) * | 2014-09-02 | 2021-04-02 | 미쓰비시 덴끼 엔지니어링 가부시키가이샤 | 공진 결합형 전력 전송 시스템, 공진형 전력 송신 장치 및 공진형 전력 수신 장치 |
CN107005092B (zh) | 2014-09-05 | 2020-03-10 | 索雷斯能源公司 | 无线电场电力传递系统、方法及其发射器和接收器 |
CN104333147B (zh) * | 2014-10-31 | 2017-01-11 | 北京智谷睿拓技术服务有限公司 | 无线能量传输方法和移动中继设备 |
US10122415B2 (en) | 2014-12-27 | 2018-11-06 | Energous Corporation | Systems and methods for assigning a set of antennas of a wireless power transmitter to a wireless power receiver based on a location of the wireless power receiver |
US9893535B2 (en) | 2015-02-13 | 2018-02-13 | Energous Corporation | Systems and methods for determining optimal charging positions to maximize efficiency of power received from wirelessly delivered sound wave energy |
US10566839B2 (en) * | 2015-06-30 | 2020-02-18 | WiTricinity Corporation | Systems, methods and apparatus for guidance and alignment between electric vehicles and wireless charging systems |
US9906275B2 (en) | 2015-09-15 | 2018-02-27 | Energous Corporation | Identifying receivers in a wireless charging transmission field |
US10523033B2 (en) | 2015-09-15 | 2019-12-31 | Energous Corporation | Receiver devices configured to determine location within a transmission field |
US9941752B2 (en) | 2015-09-16 | 2018-04-10 | Energous Corporation | Systems and methods of object detection in wireless power charging systems |
US10778041B2 (en) | 2015-09-16 | 2020-09-15 | Energous Corporation | Systems and methods for generating power waves in a wireless power transmission system |
US10186893B2 (en) | 2015-09-16 | 2019-01-22 | Energous Corporation | Systems and methods for real time or near real time wireless communications between a wireless power transmitter and a wireless power receiver |
US9893538B1 (en) | 2015-09-16 | 2018-02-13 | Energous Corporation | Systems and methods of object detection in wireless power charging systems |
US9871387B1 (en) | 2015-09-16 | 2018-01-16 | Energous Corporation | Systems and methods of object detection using one or more video cameras in wireless power charging systems |
US10008875B1 (en) | 2015-09-16 | 2018-06-26 | Energous Corporation | Wireless power transmitter configured to transmit power waves to a predicted location of a moving wireless power receiver |
US10211685B2 (en) | 2015-09-16 | 2019-02-19 | Energous Corporation | Systems and methods for real or near real time wireless communications between a wireless power transmitter and a wireless power receiver |
US10158259B1 (en) | 2015-09-16 | 2018-12-18 | Energous Corporation | Systems and methods for identifying receivers in a transmission field by transmitting exploratory power waves towards different segments of a transmission field |
US11710321B2 (en) | 2015-09-16 | 2023-07-25 | Energous Corporation | Systems and methods of object detection in wireless power charging systems |
US10199850B2 (en) | 2015-09-16 | 2019-02-05 | Energous Corporation | Systems and methods for wirelessly transmitting power from a transmitter to a receiver by determining refined locations of the receiver in a segmented transmission field associated with the transmitter |
US10050470B1 (en) | 2015-09-22 | 2018-08-14 | Energous Corporation | Wireless power transmission device having antennas oriented in three dimensions |
US10135295B2 (en) | 2015-09-22 | 2018-11-20 | Energous Corporation | Systems and methods for nullifying energy levels for wireless power transmission waves |
US10128686B1 (en) | 2015-09-22 | 2018-11-13 | Energous Corporation | Systems and methods for identifying receiver locations using sensor technologies |
US10033222B1 (en) | 2015-09-22 | 2018-07-24 | Energous Corporation | Systems and methods for determining and generating a waveform for wireless power transmission waves |
US10020678B1 (en) | 2015-09-22 | 2018-07-10 | Energous Corporation | Systems and methods for selecting antennas to generate and transmit power transmission waves |
US10027168B2 (en) | 2015-09-22 | 2018-07-17 | Energous Corporation | Systems and methods for generating and transmitting wireless power transmission waves using antennas having a spacing that is selected by the transmitter |
US10135294B1 (en) | 2015-09-22 | 2018-11-20 | Energous Corporation | Systems and methods for preconfiguring transmission devices for power wave transmissions based on location data of one or more receivers |
US10153660B1 (en) | 2015-09-22 | 2018-12-11 | Energous Corporation | Systems and methods for preconfiguring sensor data for wireless charging systems |
CN106560979B (zh) * | 2015-10-02 | 2021-03-30 | 松下知识产权经营株式会社 | 无线电力传输系统 |
US10333332B1 (en) | 2015-10-13 | 2019-06-25 | Energous Corporation | Cross-polarized dipole antenna |
US10734717B2 (en) | 2015-10-13 | 2020-08-04 | Energous Corporation | 3D ceramic mold antenna |
JP6622558B2 (ja) * | 2015-10-23 | 2019-12-18 | キヤノン株式会社 | 無線電力伝送システム及び送電装置 |
US9899744B1 (en) | 2015-10-28 | 2018-02-20 | Energous Corporation | Antenna for wireless charging systems |
US9853485B2 (en) | 2015-10-28 | 2017-12-26 | Energous Corporation | Antenna for wireless charging systems |
US10063108B1 (en) | 2015-11-02 | 2018-08-28 | Energous Corporation | Stamped three-dimensional antenna |
US10027180B1 (en) | 2015-11-02 | 2018-07-17 | Energous Corporation | 3D triple linear antenna that acts as heat sink |
US10135112B1 (en) | 2015-11-02 | 2018-11-20 | Energous Corporation | 3D antenna mount |
US10389140B2 (en) * | 2015-11-13 | 2019-08-20 | X Development Llc | Wireless power near-field repeater system that includes metamaterial arrays to suppress far-field radiation and power loss |
US10079515B2 (en) | 2016-12-12 | 2018-09-18 | Energous Corporation | Near-field RF charging pad with multi-band antenna element with adaptive loading to efficiently charge an electronic device at any position on the pad |
US11863001B2 (en) | 2015-12-24 | 2024-01-02 | Energous Corporation | Near-field antenna for wireless power transmission with antenna elements that follow meandering patterns |
US10116162B2 (en) | 2015-12-24 | 2018-10-30 | Energous Corporation | Near field transmitters with harmonic filters for wireless power charging |
US10256677B2 (en) | 2016-12-12 | 2019-04-09 | Energous Corporation | Near-field RF charging pad with adaptive loading to efficiently charge an electronic device at any position on the pad |
US10038332B1 (en) | 2015-12-24 | 2018-07-31 | Energous Corporation | Systems and methods of wireless power charging through multiple receiving devices |
US10027159B2 (en) | 2015-12-24 | 2018-07-17 | Energous Corporation | Antenna for transmitting wireless power signals |
US10320446B2 (en) | 2015-12-24 | 2019-06-11 | Energous Corporation | Miniaturized highly-efficient designs for near-field power transfer system |
US10263476B2 (en) | 2015-12-29 | 2019-04-16 | Energous Corporation | Transmitter board allowing for modular antenna configurations in wireless power transmission systems |
JP6868841B2 (ja) * | 2016-02-19 | 2021-05-12 | パナソニックIpマネジメント株式会社 | 電動装置 |
WO2017159331A1 (ja) * | 2016-03-18 | 2017-09-21 | 株式会社村田製作所 | ワイヤレス給電システムおよびその送電装置 |
CN107623549A (zh) * | 2016-07-15 | 2018-01-23 | 深圳光启高等理工研究院 | 无线光通信系统 |
US10923954B2 (en) | 2016-11-03 | 2021-02-16 | Energous Corporation | Wireless power receiver with a synchronous rectifier |
KR102349607B1 (ko) | 2016-12-12 | 2022-01-12 | 에너저스 코포레이션 | 전달되는 무선 전력을 최대화하기 위한 근접장 충전 패드의 안테나 존들을 선택적으로 활성화시키는 방법 |
US10784816B2 (en) * | 2018-12-20 | 2020-09-22 | Hall Labs Llc | Electrical and mechanical roof underlayment |
US10389161B2 (en) | 2017-03-15 | 2019-08-20 | Energous Corporation | Surface mount dielectric antennas for wireless power transmitters |
US10439442B2 (en) | 2017-01-24 | 2019-10-08 | Energous Corporation | Microstrip antennas for wireless power transmitters |
US10680319B2 (en) | 2017-01-06 | 2020-06-09 | Energous Corporation | Devices and methods for reducing mutual coupling effects in wireless power transmission systems |
JP7353178B2 (ja) * | 2017-03-07 | 2023-09-29 | パワーマット テクノロジーズ リミテッド | 無線電力充電用のシステム |
US11011942B2 (en) | 2017-03-30 | 2021-05-18 | Energous Corporation | Flat antennas having two or more resonant frequencies for use in wireless power transmission systems |
US10511097B2 (en) | 2017-05-12 | 2019-12-17 | Energous Corporation | Near-field antennas for accumulating energy at a near-field distance with minimal far-field gain |
US11462949B2 (en) | 2017-05-16 | 2022-10-04 | Wireless electrical Grid LAN, WiGL Inc | Wireless charging method and system |
US12074452B2 (en) | 2017-05-16 | 2024-08-27 | Wireless Electrical Grid Lan, Wigl Inc. | Networked wireless charging system |
US12074460B2 (en) | 2017-05-16 | 2024-08-27 | Wireless Electrical Grid Lan, Wigl Inc. | Rechargeable wireless power bank and method of using |
US10283952B2 (en) | 2017-06-22 | 2019-05-07 | Bretford Manufacturing, Inc. | Rapidly deployable floor power system |
US10848853B2 (en) | 2017-06-23 | 2020-11-24 | Energous Corporation | Systems, methods, and devices for utilizing a wire of a sound-producing device as an antenna for receipt of wirelessly delivered power |
US10122219B1 (en) | 2017-10-10 | 2018-11-06 | Energous Corporation | Systems, methods, and devices for using a battery as a antenna for receiving wirelessly delivered power from radio frequency power waves |
US11342798B2 (en) | 2017-10-30 | 2022-05-24 | Energous Corporation | Systems and methods for managing coexistence of wireless-power signals and data signals operating in a same frequency band |
US10615647B2 (en) | 2018-02-02 | 2020-04-07 | Energous Corporation | Systems and methods for detecting wireless power receivers and other objects at a near-field charging pad |
US11159057B2 (en) | 2018-03-14 | 2021-10-26 | Energous Corporation | Loop antennas with selectively-activated feeds to control propagation patterns of wireless power signals |
JP7121521B2 (ja) * | 2018-04-06 | 2022-08-18 | キヤノン株式会社 | 受電装置、送電装置、無線電力伝送システムおよびそれらの制御方法 |
US11515732B2 (en) | 2018-06-25 | 2022-11-29 | Energous Corporation | Power wave transmission techniques to focus wirelessly delivered power at a receiving device |
CN108988504A (zh) * | 2018-06-25 | 2018-12-11 | 努比亚技术有限公司 | 一种电能发射装置、接收装置和无线充电系统 |
KR102607259B1 (ko) * | 2018-08-23 | 2023-11-29 | 삼성전자주식회사 | 무선 전력 송신 장치, 무선으로 전력을 수신하는 전자 장치 및 그 제어 방법 |
US11437735B2 (en) | 2018-11-14 | 2022-09-06 | Energous Corporation | Systems for receiving electromagnetic energy using antennas that are minimally affected by the presence of the human body |
KR20210117283A (ko) | 2019-01-28 | 2021-09-28 | 에너저스 코포레이션 | 무선 전력 전송을 위한 소형 안테나에 대한 시스템들 및 방법들 |
EP3921945A1 (en) | 2019-02-06 | 2021-12-15 | Energous Corporation | Systems and methods of estimating optimal phases to use for individual antennas in an antenna array |
JP6729920B1 (ja) * | 2019-08-08 | 2020-07-29 | 株式会社レーザーシステム | 共振装置、電力伝送装置、及び電力伝送方法 |
US11139699B2 (en) | 2019-09-20 | 2021-10-05 | Energous Corporation | Classifying and detecting foreign objects using a power amplifier controller integrated circuit in wireless power transmission systems |
US11381118B2 (en) | 2019-09-20 | 2022-07-05 | Energous Corporation | Systems and methods for machine learning based foreign object detection for wireless power transmission |
CN115104234A (zh) | 2019-09-20 | 2022-09-23 | 艾诺格思公司 | 使用多个整流器保护无线电力接收器以及使用多个整流器建立带内通信的系统和方法 |
EP4073905A4 (en) | 2019-12-13 | 2024-01-03 | Energous Corporation | CHARGING PAD WITH GUIDING CONTOURS FOR ALIGNING AN ELECTRONIC DEVICE ON THE CHARGING PAD AND FOR EFFICIENTLY TRANSMITTING NEAR FIELD HIGH FREQUENCY ENERGY TO THE ELECTRONIC DEVICE |
US10985617B1 (en) | 2019-12-31 | 2021-04-20 | Energous Corporation | System for wirelessly transmitting energy at a near-field distance without using beam-forming control |
US11799324B2 (en) | 2020-04-13 | 2023-10-24 | Energous Corporation | Wireless-power transmitting device for creating a uniform near-field charging area |
WO2022042931A1 (de) | 2020-08-28 | 2022-03-03 | Sew-Eurodrive Gmbh & Co. Kg | Vorrichtung und system zur berührungslosen energieübertragung |
TWI759196B (zh) * | 2021-05-05 | 2022-03-21 | 絜靜精微有限公司 | 電子擾動式之無線充電系統及其無線充電電池結構 |
US11916398B2 (en) | 2021-12-29 | 2024-02-27 | Energous Corporation | Small form-factor devices with integrated and modular harvesting receivers, and shelving-mounted wireless-power transmitters for use therewith |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04318742A (ja) | 1991-04-18 | 1992-11-10 | Oi Denki Kk | 多地点間通信装置 |
US20080278264A1 (en) | 2005-07-12 | 2008-11-13 | Aristeidis Karalis | Wireless energy transfer |
WO2009111597A2 (en) * | 2008-03-05 | 2009-09-11 | Nigel Power Llc | Packaging and details of a wireless power device |
JP2009268311A (ja) * | 2008-04-28 | 2009-11-12 | Sony Corp | 送電装置、送電方法、プログラム、および電力伝送システム |
JP2010148273A (ja) * | 2007-12-14 | 2010-07-01 | Darfon Electronics Corp | エネルギー転送システム及びエネルギー転送方法 |
JP2011147280A (ja) * | 2010-01-15 | 2011-07-28 | Sony Corp | ワイヤレス給電システム |
JP2011151989A (ja) * | 2010-01-22 | 2011-08-04 | Sony Corp | ワイヤレス給電装置およびワイヤレス給電システム |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20040072581A (ko) * | 2004-07-29 | 2004-08-18 | (주)제이씨 프로텍 | 전자기파 증폭중계기 및 이를 이용한 무선전력변환장치 |
US7262700B2 (en) | 2005-03-10 | 2007-08-28 | Microsoft Corporation | Inductive powering surface for powering portable devices |
US8169185B2 (en) | 2006-01-31 | 2012-05-01 | Mojo Mobility, Inc. | System and method for inductive charging of portable devices |
WO2008050260A1 (en) | 2006-10-26 | 2008-05-02 | Philips Intellectual Property & Standards Gmbh | Inductive power system and method of operation |
US8299652B2 (en) * | 2008-08-20 | 2012-10-30 | Intel Corporation | Wireless power transfer apparatus and method thereof |
US8421274B2 (en) * | 2008-09-12 | 2013-04-16 | University Of Pittsburgh-Of The Commonwealth System Of Higher Education | Wireless energy transfer system |
US8461720B2 (en) * | 2008-09-27 | 2013-06-11 | Witricity Corporation | Wireless energy transfer using conducting surfaces to shape fields and reduce loss |
US8497601B2 (en) * | 2008-09-27 | 2013-07-30 | Witricity Corporation | Wireless energy transfer converters |
US8552592B2 (en) * | 2008-09-27 | 2013-10-08 | Witricity Corporation | Wireless energy transfer with feedback control for lighting applications |
US8482158B2 (en) | 2008-09-27 | 2013-07-09 | Witricity Corporation | Wireless energy transfer using variable size resonators and system monitoring |
JP4318742B1 (ja) | 2008-10-06 | 2009-08-26 | 有限会社日本テクモ | 非接触電力供給装置 |
WO2010055771A1 (ja) | 2008-11-17 | 2010-05-20 | オリンパス株式会社 | 無線給電装置、送電コイルユニット、および無線給電システム |
JP5350758B2 (ja) | 2008-11-17 | 2013-11-27 | オリンパス株式会社 | 電力供給装置 |
-
2011
- 2011-06-28 US US13/170,355 patent/US8970070B2/en active Active
- 2011-06-29 CN CN201180003066.0A patent/CN102484397B/zh active Active
- 2011-06-29 JP JP2012505537A patent/JP5180406B2/ja active Active
- 2011-06-29 WO PCT/JP2011/003696 patent/WO2012001959A1/ja active Application Filing
- 2011-06-29 EP EP11800429.0A patent/EP2562911B1/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04318742A (ja) | 1991-04-18 | 1992-11-10 | Oi Denki Kk | 多地点間通信装置 |
US20080278264A1 (en) | 2005-07-12 | 2008-11-13 | Aristeidis Karalis | Wireless energy transfer |
JP2010148273A (ja) * | 2007-12-14 | 2010-07-01 | Darfon Electronics Corp | エネルギー転送システム及びエネルギー転送方法 |
WO2009111597A2 (en) * | 2008-03-05 | 2009-09-11 | Nigel Power Llc | Packaging and details of a wireless power device |
JP2009268311A (ja) * | 2008-04-28 | 2009-11-12 | Sony Corp | 送電装置、送電方法、プログラム、および電力伝送システム |
JP2011147280A (ja) * | 2010-01-15 | 2011-07-28 | Sony Corp | ワイヤレス給電システム |
JP2011151989A (ja) * | 2010-01-22 | 2011-08-04 | Sony Corp | ワイヤレス給電装置およびワイヤレス給電システム |
Non-Patent Citations (1)
Title |
---|
See also references of EP2562911A4 |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9641027B2 (en) | 2011-09-21 | 2017-05-02 | Nec Corporation | Wireless power feeding system and wireless power feeding method |
JPWO2013042291A1 (ja) * | 2011-09-21 | 2015-03-26 | 日本電気株式会社 | 無線給電システム及び無線給電方法 |
JP2013169129A (ja) * | 2012-02-17 | 2013-08-29 | Hitachi Maxell Ltd | 非接触電力伝送装置 |
CN103296780A (zh) * | 2012-03-01 | 2013-09-11 | 深圳光启创新技术有限公司 | 一种内窥镜胶囊供电系统 |
CN103296777A (zh) * | 2012-03-01 | 2013-09-11 | 深圳光启创新技术有限公司 | 一种内窥镜胶囊供电系统 |
JP2013188002A (ja) * | 2012-03-07 | 2013-09-19 | Hitachi Maxell Ltd | 非接触電力伝送システム及び非接触電力伝送方法 |
JP2013188016A (ja) * | 2012-03-08 | 2013-09-19 | Hitachi Maxell Ltd | 非接触電力伝送装置及び非接触電力伝送方法 |
KR101988009B1 (ko) | 2012-03-23 | 2019-06-11 | 삼성전자주식회사 | 공진 주파수를 조정해서 커플링 효율을 높이는 무전전력 전송 시스템 및 방법 |
KR20130107955A (ko) * | 2012-03-23 | 2013-10-02 | 삼성전자주식회사 | 공진 주파수를 조정해서 커플링 효율을 높이는 무전전력 전송 시스템 및 방법 |
US9711970B2 (en) | 2012-11-15 | 2017-07-18 | The Chugoku Electric Power Co., Inc. | Non-contact power supply system and control method for non-contact power supply system |
JPWO2014076801A1 (ja) * | 2012-11-15 | 2016-09-08 | 中国電力株式会社 | 非接触給電システム、及び非接触給電システムの制御方法 |
WO2014115223A1 (ja) * | 2013-01-24 | 2014-07-31 | パナソニック株式会社 | 非接触電力伝送システム |
WO2014118972A1 (ja) * | 2013-02-01 | 2014-08-07 | パイオニア株式会社 | 非接触給電装置、非接触給電方法及びコンピュータプログラム |
JPWO2014118972A1 (ja) * | 2013-02-01 | 2017-01-26 | パイオニア株式会社 | 非接触給電装置、非接触給電方法及びコンピュータプログラム |
JP2014187848A (ja) * | 2013-03-25 | 2014-10-02 | Hitachi Maxell Ltd | 非接触電力伝送システム |
KR20150004474A (ko) * | 2013-07-02 | 2015-01-13 | 삼성전자주식회사 | 중계 공진기를 포함하는 무선 전력 전송 방법 및 시스템 |
KR102042712B1 (ko) * | 2013-07-02 | 2019-11-11 | 삼성전자주식회사 | 중계 공진기를 포함하는 무선 전력 전송 방법 및 시스템 |
JP2015061325A (ja) * | 2013-09-17 | 2015-03-30 | 日立マクセル株式会社 | 非接触電力伝送装置及び非接触電力伝送方法 |
CN103462640A (zh) * | 2013-09-30 | 2013-12-25 | 苏州边枫电子科技有限公司 | 导声胶的无线智能加热装置 |
JP2017050954A (ja) * | 2015-09-01 | 2017-03-09 | 株式会社Lixil | 屋外給電装置 |
JP2017070177A (ja) * | 2015-10-02 | 2017-04-06 | パナソニックIpマネジメント株式会社 | 無線電力伝送システム |
US10547216B2 (en) | 2015-12-25 | 2020-01-28 | Mitsubishi Electric Corporation | Power receiving apparatus, power feeding system, power feeding method, power source management method, computer readable recording medium storing power feeding program, and computer readable recording medium storing power source management program |
JP2017221090A (ja) * | 2016-06-10 | 2017-12-14 | 株式会社Lixil | ワイヤレス給電システム |
JP2020178531A (ja) * | 2016-06-30 | 2020-10-29 | パナソニック株式会社 | 送電装置 |
KR20190137796A (ko) * | 2017-03-07 | 2019-12-11 | 파워매트 테크놀로지스 엘티디. | 무선 전력 충전 시스템 |
JP2020512795A (ja) * | 2017-03-07 | 2020-04-23 | パワーマット テクノロジーズ リミテッド | 無線電力充電用のシステム |
KR102561311B1 (ko) * | 2017-03-07 | 2023-07-27 | 파워매트 테크놀로지스 엘티디. | 무선 전력 충전 시스템 |
US11848569B2 (en) | 2017-03-07 | 2023-12-19 | Powermat Technologies Ltd. | System for wireless power charging |
JP7406376B2 (ja) | 2017-03-07 | 2023-12-27 | パワーマット テクノロジーズ リミテッド | 無線電力充電用のシステム |
JP2018032876A (ja) * | 2017-11-17 | 2018-03-01 | 富士通コンポーネント株式会社 | 無線受電装置 |
JP2022119155A (ja) * | 2021-02-03 | 2022-08-16 | 寶トク科技股フン有限公司 | マウスパッド |
JP7344582B2 (ja) | 2021-02-03 | 2023-09-14 | 寶トク科技股フン有限公司 | マウスパッド |
Also Published As
Publication number | Publication date |
---|---|
US8970070B2 (en) | 2015-03-03 |
US20120001497A1 (en) | 2012-01-05 |
EP2562911B1 (en) | 2017-03-29 |
EP2562911A1 (en) | 2013-02-27 |
EP2562911A4 (en) | 2014-01-01 |
CN102484397B (zh) | 2015-02-25 |
JPWO2012001959A1 (ja) | 2013-08-22 |
CN102484397A (zh) | 2012-05-30 |
JP5180406B2 (ja) | 2013-04-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5180406B2 (ja) | 無線電力伝送装置 | |
JP6219285B2 (ja) | 電界を用いたワイヤレス電力送信システムおよび電力送信方法 | |
EP3347968B1 (en) | Wireless charging platforms via three-dimensional phased coil arrays | |
KR102154744B1 (ko) | 전자 장치의 무선 충전 시스템 | |
US20190140485A1 (en) | Wireless power transmission apparatus and wireless power transmission method | |
EP3078119B1 (en) | Wireless power orthogonal polarization antenna array | |
JP5759388B2 (ja) | 多次元無線充電に関するシステムおよび方法 | |
EP3127210B1 (en) | Systems, apparatus, and methods for wireless power receiver coil configuration | |
US20210110971A1 (en) | Wireless power transmittal | |
US20160197511A1 (en) | Wireless energy transfer for wearables | |
JP2015508987A (ja) | 減少した場を有する無線エネルギー伝送 | |
EP3093957A1 (en) | Foreign object detecting device, wireless power transmitting apparatus, and wireless power transfer system | |
US20160087477A1 (en) | Wireless charger with uniform h-field generator and emi reduction | |
JP2010503368A (ja) | ハイブリッドパワー取り出しおよび方法 | |
KR20110036639A (ko) | 기생 공진 탱크를 포함하는 전자 디바이스들을 위한 무선 전력 송신 | |
KR20130058423A (ko) | 무선전력 중계장치, 무선전력 전송 방법 및 공진주파수 조절 방법 | |
US20180205268A1 (en) | Method for operating wireless power transmission device | |
KR20160129673A (ko) | 억제된 전자파 발산 및 향상된 충전 효율을 갖는 무선 충전 장치 및 시스템 | |
KR20170041706A (ko) | 무선 전계 송전 시스템, 이를 위한 송신기 및 수신기, 및 무선 송전 방법 | |
US20230369895A1 (en) | Systems and methods for wireless power transferring | |
TW201246744A (en) | Transmission coil for wireless power transmission | |
JP5838685B2 (ja) | 無線空間給電システム | |
KR20130009645A (ko) | 무선 전력 수신기 | |
EP4040639A1 (en) | Apparatus, in particular for wireless supplying and charging | |
WO2023143723A1 (en) | Transmitter device with switching network for wirelessly powering receiver devices |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201180003066.0 Country of ref document: CN |
|
REEP | Request for entry into the european phase |
Ref document number: 2011800429 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011800429 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012505537 Country of ref document: JP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11800429 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |