WO2011070637A1 - 磁界共鳴送電装置、及び、磁界共鳴受電装置 - Google Patents

磁界共鳴送電装置、及び、磁界共鳴受電装置 Download PDF

Info

Publication number
WO2011070637A1
WO2011070637A1 PCT/JP2009/070467 JP2009070467W WO2011070637A1 WO 2011070637 A1 WO2011070637 A1 WO 2011070637A1 JP 2009070467 W JP2009070467 W JP 2009070467W WO 2011070637 A1 WO2011070637 A1 WO 2011070637A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic field
resonance
coil
magnetic
power transmission
Prior art date
Application number
PCT/JP2009/070467
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
聡 下川
Original Assignee
富士通株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士通株式会社 filed Critical 富士通株式会社
Priority to CN200980162582.0A priority Critical patent/CN102640392B/zh
Priority to PCT/JP2009/070467 priority patent/WO2011070637A1/ja
Priority to EP09852034.9A priority patent/EP2512006B1/en
Priority to JP2011544999A priority patent/JP5510460B2/ja
Priority to KR1020127011956A priority patent/KR20120081195A/ko
Priority to KR1020147027592A priority patent/KR101482506B1/ko
Publication of WO2011070637A1 publication Critical patent/WO2011070637A1/ja
Priority to US13/476,185 priority patent/US20120229140A1/en
Priority to US15/670,540 priority patent/US20170338664A1/en

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
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/05—Circuit arrangements or systems for wireless supply or distribution of electric power using capacitive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—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
    • H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields

Definitions

  • This case relates to a magnetic field resonance power transmission device and a magnetic field resonance power receiving device used for wireless power transmission by magnetic field resonance.
  • the magnetic field resonance wireless power transmission system includes a power transmission device including a resonance coil and a power reception device including a resonance coil, and the resonance coil included in the power transmission device and the resonance coil included in the power reception device have the same resonance frequency. .
  • the magnetic field resonance wireless power transmission system there are a wireless power transmission system using radio waves and a wireless power transmission system using electromagnetic induction. Compared with these other power transmission systems, the magnetic field resonance wireless power transmission system has the following advantages, for example.
  • the magnetic field resonance wireless power transmission system can transmit a large amount of power as compared with a wireless power transmission system using radio waves.
  • the magnetic field resonance wireless power transmission system can increase the power transmission distance as compared with the wireless power transmission system using electromagnetic induction, and can further reduce the resonance coils of the power transmission device and the power reception device. is there.
  • JP 2009-152862 A Japanese Patent Laid-Open No. 2007-142088 Japanese Patent Laid-Open No. 62-126607
  • the resonance frequency of the resonance coil of the power transmission device or the resonance frequency of the resonance coil of the power reception device is affected by manufacturing variations, fluctuations in the usage environment such as temperature and humidity, and the influence of external magnetic materials.
  • the frequency deviates from the target frequency.
  • the power transmission efficiency energy transfer efficiency
  • an object of the present invention is to provide a magnetic field resonance power transmission device and a magnetic field resonance power reception device that have improved power transmission efficiency.
  • This magnetic field resonance power transmission device includes a resonance coil, a power supply unit that supplies power to the resonance coil to generate a magnetic field, a magnetic body that changes a magnetic field generated by the resonance coil, and a positional relationship between the resonance coil and the magnetic body A position adjusting unit for adjusting the position.
  • FIG. 7 is a perspective view corresponding to FIG. 6. It is the figure which showed an example of the setting method of the magnetic field shield which concerns on 3rd Embodiment.
  • FIG. 13 is a perspective view corresponding to FIG. 12. It is the flowchart which showed an example of the adjustment procedure of the magnetic field resonance power receiving apparatus which concerns on 5th Embodiment. It is the sequence diagram which showed an example of the adjustment procedure of the magnetic field resonance wireless power transmission system which concerns on 6th Embodiment.
  • FIG. 1 is a diagram illustrating an example of a magnetic field resonance wireless power transmission system according to the first embodiment.
  • the magnetic field resonance wireless power transmission system 1 includes a magnetic field resonance power transmission device 10 that transmits electric power, and a magnetic field resonance power reception device 20 to which electric power transmitted from the magnetic field resonance power transmission device 10 is supplied.
  • the magnetic field resonance power transmission apparatus 10 includes a resonance coil 11, a power supply unit 12 that supplies power to the resonance coil 11 to generate a magnetic field, a magnetic body 13 that changes the magnetic field generated by the resonance coil 11, and the resonance coil 11.
  • the resonance coil 11 constitutes an LC resonance circuit having an inductance and a capacitance, and has a resonance frequency equal to the transmission frequency.
  • the transmission frequency is a frequency used for transmitting power from the magnetic field resonance power transmission apparatus 10 to the magnetic field resonance power reception apparatus 20.
  • the capacitance is obtained by the stray capacitance of the resonance coil 11, but may be obtained by providing a capacitor between the coil wires of the resonance coil 11.
  • the resonance coil 11 When electric power is supplied from the power supply unit 12 and an alternating current flows, the resonance coil 11 generates a magnetic field around it. The magnetic field generated by the resonance coil 11 vibrates according to the frequency of the flowing alternating current.
  • the power supply unit 12 supplies power to the resonance coil 11 and causes the resonance coil 11 to generate an alternating current having the same frequency as the transmission frequency.
  • the power supply unit 12 includes, for example, an AC power supply and a coil connected to the AC power supply, and supplies power to the resonance coil 11 using electromagnetic induction.
  • the power supply unit 12 may be configured by an AC power supply, and may be directly connected to the resonance coil 11 by wiring or the like to supply power.
  • the magnetic body 13 for example, plate-shaped or sheet-shaped ferrite is used.
  • the magnetic body 13 changes the magnetic field generated by the resonance coil 11 according to the relative position to the resonance coil 11 and the shape thereof. Further, the magnetic body 13 suppresses, for example, the magnetic field generated by the resonance coil 11 from being influenced by an external magnetic body, or the magnetic field generated by the resonance coil 11 affects external electronic components. It is also possible to function as a shielding material for suppression.
  • the position adjusting unit 14 adjusts the positional relationship between the resonance coil 11 and the magnetic body 13 by, for example, rotating the magnetic body 13 or moving the magnetic body 13 closer to or away from the resonance coil 11. Conversely, the position adjustment unit 14 adjusts the positional relationship between the resonance coil 11 and the magnetic body 13 by rotating the resonance coil 11 or moving the resonance coil 11 closer to or away from the magnetic body 13. Also good.
  • the magnetic field resonance power receiving apparatus 20 includes a resonance coil 21 to which power is transmitted from the resonance coil 11, and a power receiving unit 22 that receives power from the resonance coil 21.
  • the resonance coil 21 constitutes an LC resonance circuit having an inductance and a capacitance, and has a resonance frequency that is the same as the transmission frequency. That is, the resonance frequency of the resonance coil 21 matches the resonance frequency of the resonance coil 11.
  • the capacitance is obtained by the stray capacitance of the resonance coil 21, but may be obtained by providing a capacitor between the coil wires of the resonance coil 21. An alternating current is generated in the resonance coil 21 in accordance with the vibration of the magnetic field generated by the resonance coil 11.
  • the power receiving unit 22 includes, for example, a power consuming unit or a power storage unit and a coil connected to the power consuming unit or a power storage unit, and receives power from the resonance coil 21 using electromagnetic induction.
  • the power receiving unit 22 may be configured by a power consuming unit or a power storage unit, and may be directly connected to the resonance coil 21 by wiring or the like to receive power.
  • both the resonance coil 11 and the resonance coil 21 have the same resonance frequency as the transmission frequency.
  • power transmission by magnetic field resonance is performed between the resonance coil 11 and the resonance coil 21, and an alternating current flows through the resonance coil 21.
  • the distance between the resonance coil 11 and the resonance coil 21 during power transmission is assumed to be, for example, about several tens cm to 2 m.
  • FIG. 2 is an equivalent circuit diagram showing an example of the resonance coil according to the first embodiment.
  • the resonance coils 11 and 21 constitute an LC resonance circuit including an inductance L and a capacitor C.
  • FIG. 3 is a graph illustrating an example of a power transmission state of the magnetic field resonance wireless power transmission system according to the first embodiment.
  • the horizontal axis of the graph represents transmission frequency (MHz), and the vertical axis represents transmission power (dB).
  • the transmission power is power transmitted from the resonance coil 11 to the resonance coil 21.
  • a characteristic 1a indicates a transmission power characteristic when the resonance frequencies of the resonance coil 11 and the resonance coil 21 coincide with the target frequency f0. In this example, the value of f0 is 13.56 MHz.
  • a characteristic 1b shows a transmission power characteristic when the resonance frequency of the resonance coil 11 is f0 and the resonance frequency of the resonance coil 21 is shifted by + 5% from f0.
  • the characteristic 1c shows the transmission power characteristic when the resonance frequency of the resonance coil 11 is f0 and the resonance frequency of the resonance coil 21 is shifted by + 10% with respect to f0.
  • the transmission power has a steep characteristic that has a peak value when the transmission frequency is f0 which is the same as the resonance frequency of the resonance coil 11 and the resonance coil 21.
  • the transmission power exhibits a steep characteristic, it is possible to increase the Q value indicating the efficiency of power transmission.
  • the transmission power is about 6 dB.
  • the resonance frequency of the resonance coil 11 or the resonance coil 21 deviates from the target resonance frequency due to manufacturing variations, changes in the usage environment such as temperature and humidity, and the influence of an external magnetic substance. If the characteristics shift in the horizontal axis direction, the transmission power is greatly reduced.
  • the transmission power when the transmission frequency is f0 is about 3 dB, which is significantly reduced compared to the characteristic 1a. To do.
  • the resonance frequency of the resonance coil 21 when the resonance frequency of the resonance coil 21 is shifted by + 10% from f0, the amount of shift in the horizontal axis direction is small, but the transmission power when the transmission frequency is f0 is about 0 dB. As compared with the case of the characteristic 1a, it is greatly reduced.
  • FIGS. 4A and 4B are model diagrams for explaining the characteristics of the magnetic material.
  • FIG. 4A shows the state of the magnetic field generated by the coil.
  • FIG. 4B shows the state of the magnetic field in the case where a magnetic material is arranged in the magnetic field shown in FIG.
  • FIG. 5 shows the magnitude of the magnetic flux at the location indicated by the dotted line AA in FIGS. 4 (A) and 4 (B). 5 corresponds to the position D in FIGS. 4A and 4B.
  • the interlinkage magnetic flux of the coil changes.
  • the coil inductance L increases, and when the interlinkage magnetic flux decreases, the coil inductance L decreases.
  • the magnetic flux reduces the flux linkage and the coil inductance L is reduced.
  • the amount of flux linkage changes according to the change in the relative position between the coil and the magnetic body. That is, when the distance between the coil and the magnetic material is reduced or increased, the flux linkage of the coil is increased or decreased, and as a result, the inductance L is also changed.
  • the magnetic body 13 changes the inductance L of the resonance coil 11. Furthermore, the inductance L of the resonance coil 11 changes according to the change in the relative position between the resonance coil 11 and the magnetic body 13.
  • the efficiency of power transmission as described with reference to FIG. 3. May be reduced.
  • the inductance L of the resonance coil 11 can be changed as described with reference to FIG. 4. .
  • the resonance frequency of the resonance coil 11 changes according to the change of the inductance L, as shown by the above formula (1).
  • the magnetic field resonance wireless power transmission system 1 can adjust the resonance frequency of the resonance coil 11 to match the target frequency by adjusting the position of the magnetic body 13 by the position adjustment unit 14.
  • the magnetic field resonance wireless power transmission system 1 can improve the efficiency of power transmission. Furthermore, in the magnetic field resonance wireless power transmission system 1, since the resonance frequency of the resonance coil 11 is adjusted by adjusting the position of the magnetic body 13 as described above, the resonance frequency is adjusted without performing a complicated process. Is possible.
  • a method of adjusting the resonance frequency of the resonance coil 11 for example, a method of changing the capacitance C of the resonance coil 11 using a variable capacitor or changing the inductance L by changing the shape of the resonance coil 11 can be considered. It is done. However, these methods make the adjustment process very complicated. The method of adjusting the position of the magnetic body 13 can be adjusted by a significantly simpler process than these adjustment methods.
  • the magnetic body 13 and the position adjustment unit 14 are provided only in the magnetic field resonance power transmission apparatus 10. Similarly, the magnetic body 13 and the position adjustment unit 14 are connected to the magnetic field resonance power reception apparatus. 20 may be provided. In this case, the resonance frequency of the resonance coil 21 can be adjusted to match the target frequency.
  • FIG. 6 is a side view showing an example of the magnetic field resonance power transmission apparatus according to the second embodiment.
  • FIG. 7 is a perspective view corresponding to FIG. In FIG. 7, the position adjustment screw 140 and the frame 150 are not shown.
  • the magnetic field resonance power transmitting apparatus 100a changes a resonance coil 110, a coil 120 that supplies power to the resonance coil 110 by electromagnetic induction, an AC power source 121 that generates an AC current in the coil 120, and a magnetic field generated by the resonance coil 110. And a magnetic field shield 130.
  • the material of the resonance coil 110 is, for example, copper (Cu).
  • Cu copper
  • the resonance coil 110 for example, a spiral coil having a diameter of 30 cm is used.
  • the resonance coil 110 constitutes an LC resonance circuit including an inductance L and a capacitance C, and has a resonance frequency that is the same as the transmission frequency.
  • the capacitance C is obtained by providing the capacitor 111 between the coil wires of the resonance coil 110, but may be obtained by the stray capacitance of the resonance coil 110 without using the capacitor 111.
  • the resonant frequency of the resonant coil 110 is 10 MHz, for example.
  • the resonance coil 110 is directed to a resonance coil (not shown) on the magnetic resonance power receiving apparatus side by magnetic resonance.
  • Conduct power transmission An arrow 112 in FIG. 6 indicates the direction of this power transmission.
  • the AC power supply 121 for example, a Colpitts oscillation circuit is used.
  • the AC power source 121 is connected to the coil 120 via the wiring 122 and causes the coil 120 to generate an AC current having the same frequency as the transmission frequency, for example, 10 MHz.
  • the material of the coil 120 is, for example, copper (Cu).
  • the diameter of the coil 120 is smaller than the diameter of the resonance coil 110, and the coil 120 is disposed inside the resonance coil 110. By making the diameter of the coil 120 smaller than that of the resonance coil 110, it is possible to reduce the rate at which the magnetic field generated by the coil 120 affects the power transmission by magnetic field resonance.
  • the coil 120 supplies electric power to the resonance coil 110 by electromagnetic induction and causes the resonance coil 110 to generate an alternating current.
  • the frequency of the alternating current flowing through the coil 120 matches the frequency of the alternating current generated in the resonant coil 110. That is, when an alternating current having the same frequency as the transmission frequency, for example, 10 MHz, is supplied to the coil 120, an alternating current having the same frequency as the transmission frequency, for example, an alternating current of 10 MHz flows through the resonance coil 110.
  • the resonance coil 110 is not supplied with electric power by wiring or the like, but is supplied with electric power by electromagnetic induction. As a result, it is possible to avoid adding resistance to the resonance coil 110 due to the AC power supply 121, wiring for power supply, or the like, and thus it is possible to obtain the resonance coil 110 having a low resonance and high resonance Q. It becomes.
  • the magnetic shield 130 is made of a magnetic material made of ferrite or the like.
  • the magnetic field shield 130 is located below the resonance coil 110. That is, the magnetic field shield 130 is disposed on the opposite side of the resonance coil 110 from the side where power transmission by magnetic field resonance is performed.
  • the magnetic field shield 130 changes the resonance frequency of the resonance coil 110 by changing the magnetic field generated by the resonance coil 110 according to the relative position to the resonance coil 110 and the shape thereof.
  • the magnetic field shield 130 further suppresses the magnetic field generated by the resonance coil 110 from being affected by an external magnetic material, and further suppresses the magnetic field generated by the resonance coil 110 from affecting external electronic components. .
  • the outer periphery of the magnetic field shield 130 is located outside the outer periphery of the resonance coil 110. That is, the magnetic field shield 130 has a larger area than the resonance coil 110.
  • the magnetic field resonance power transmission apparatus 100a includes a frame 150 that supports the resonance coil 110, the coil 120, and the magnetic field shield 130, and a position adjustment screw that is provided on the frame 150 and adjusts the positional relationship between the resonance coil 110 and the magnetic field shield 130. 140.
  • a plurality of position adjusting screws 140 are provided corresponding to the periphery of the magnetic field shield 130.
  • the position adjustment screw 140 rotates to raise or lower the magnetic field shield 130 and change the relative position between the resonance coil 110 and the magnetic field shield 130.
  • Rotating the plurality of position adjusting screws 140 in the same manner allows the magnetic field shield 130 to be translated as indicated by the arrow 141. Further, by selectively rotating some of the plurality of position adjusting screws 140, the magnetic field shield 130 can be rotated and tilted as indicated by an arrow 142.
  • the magnetic field resonance power transmission apparatus 100a further includes a current sensor 161 that detects a current flowing through the resonance coil 110, a magnetic field sensor 162 that detects a magnetic field generated by the resonance coil 110, and a current and magnetic field sensor 162 detected by the current sensor 161. And a measuring device 160 for measuring the detected magnetic field.
  • a Hall element is used for the current sensor 161.
  • the current sensor 161 is disposed so as to clamp the coil wire constituting the resonance coil 110.
  • the magnetic field sensor 162 is disposed above the resonance coil 110, that is, in the power transmission direction by magnetic field resonance indicated by an arrow 112.
  • the current flowing through the resonance coil 110 and the magnetic field generated in the resonance coil 110 increase as the resonance frequency of the resonance coil 110 approaches the target frequency, and the resonance frequency of the resonance coil 110 matches the target frequency. When it becomes the maximum. That is, it is possible to detect a deviation between the resonance frequency of the resonance coil 110 and the target frequency based on the measurement result of the measuring instrument 160.
  • both the current sensor 161 and the magnetic field sensor 162 are provided, but only one of them may be provided. Next, the adjustment procedure of the magnetic field resonance power transmission apparatus 100a will be described.
  • an alternating current having the same frequency as the transmission frequency is generated in the coil 120 by the alternating current power supply 121.
  • the current flowing through the resonance coil 110 or the magnetic field generated in the resonance coil 110 is measured by the measuring instrument 160.
  • the position of the magnetic field shield 130 is adjusted by rotating the position adjusting screw 140 so that the measurement result becomes the maximum value.
  • the position of the magnetic field shield 130 is adjusted by rotating the position adjusting screw 140 in accordance with the measurement result by the measuring device 160, so that the resonance frequency of the resonance coil 110 is obtained.
  • the frequency can be adjusted to
  • the magnetic field resonance power transmission apparatus 100a can improve the efficiency of power transmission by magnetic field resonance. Furthermore, in the magnetic field resonance power transmitting apparatus 100a, as described above, the resonance frequency of the resonance coil 110 is adjusted by adjusting the position of the magnetic field shield 130. Therefore, the resonance frequency can be adjusted without performing a complicated process. It becomes possible.
  • FIG. 8 is a diagram illustrating an example of a magnetic field shield setting method according to the third embodiment.
  • a magnetic field shield composed of unit magnetic field shields 130a that can be combined is prepared. Then, the number of unit magnetic field shields 130a constituting the magnetic field shield is increased or decreased so that the current or magnetic field measured by the measuring instrument 160 is maximized.
  • the magnetic flux passing through the magnetic field shield changes depending on the number of unit magnetic field shields 130a, and the resonance frequency of the resonance coil 110 changes.
  • FIG. 9 is a diagram illustrating another example of the magnetic field shield setting method according to the third embodiment.
  • a plurality of types of replaceable magnetic field shields 130 having different shapes, thicknesses, or magnetic permeability are prepared.
  • the plurality of magnetic field shields 130 are sequentially attached, and measurement is performed by the measuring device 160.
  • the magnetic field shield 130 that maximizes the current or magnetic field measured by the measuring instrument 160 is selected from the plurality of magnetic field shields 130.
  • the magnetic field shield 130 is set.
  • the resonance frequency of the resonance coil 110 can be adjusted to a target frequency. Note that the setting of the magnetic field shield 130 of the third embodiment is performed before the adjustment of the resonance coil 110 of the second embodiment.
  • FIG. 10 is a side view showing an example of the magnetic field resonance power transmission apparatus according to the fourth embodiment.
  • the magnetic field resonance power transmission apparatus 100b is different from the magnetic field resonance power transmission apparatus 100a according to the second embodiment in that a control circuit 170 and a plurality of motors 180 are provided instead of the measuring device 160. Each of the plurality of motors 180 is provided corresponding to the position adjustment screw 140 and rotates the position adjustment screw 140.
  • the control circuit 170 is connected to the current sensor 161 and the magnetic field sensor 162, and measures the current detected by the current sensor 161 and the magnetic field detected by the magnetic field sensor 162. Furthermore, the control circuit 170 has a memory 171 and stores the measured current value and magnetic field strength in the memory 171.
  • control circuit 170 is connected to a plurality of motors 180 and controls the operation of each motor 180. Further, the control circuit 170 is connected to the AC power supply 121 and controls the power supply of the AC power supply 121.
  • FIG. 11 is a flowchart illustrating an example of an adjustment procedure of the magnetic field resonance power transmission apparatus according to the fourth embodiment.
  • Step S101 The control circuit 170 controls the motor 180 to move the position of the magnetic field shield 130 to the initial position.
  • the initial position is set to a position farthest from the resonance coil 110.
  • Step S ⁇ b> 102 The control circuit 170 controls the AC power supply 121 to supply power to the coil 120.
  • the control circuit 170 measures the current of the resonance coil 110 detected by the current sensor 161. Instead of measuring the current, the magnetic field generated by the resonance coil 110 detected by the magnetic field sensor 162 may be measured.
  • Step S104 The control circuit 170 determines whether or not the measurement in step S103 is the first time. In the case of the first time, the process proceeds to step S105. If it is not the first time, that is, if it is the second time or later, the process proceeds to step S106.
  • Step S105 The control circuit 170 stores the current value measured in step S103 in the memory 171.
  • Step S106 The control circuit 170 determines whether or not the current value measured in step S103 is larger than the previous measurement value stored in the memory 171. If larger, the process proceeds to step S105. If not, the process is terminated. Alternatively, after returning the position of the magnetic field shield 130 to the previous position, the process is terminated.
  • Step S107 The control circuit 170 controls the motor 180 to translate the position of the magnetic field shield 130 by a specified step amount, and the process proceeds to step S103.
  • the magnetic field shield 130 moves in a direction approaching the resonance coil 110.
  • step S107 the movement of the position of the magnetic field shield 130 of step S107 may be changed from a translation movement to the rotational movement in which a finer adjustment is possible, and step S103 to step S107 may be repeated.
  • FIG. 12 is a side view showing an example of the magnetic field resonance power receiving apparatus according to the fifth embodiment.
  • FIG. 13 is a perspective view corresponding to FIG. In FIG. 13, the frame 250, the control circuit 240, and the battery 260 are not shown.
  • the magnetic field resonance power receiving apparatus 200 includes a resonance coil 210 that transmits power from a resonance coil (not shown) of the magnetic field resonance power transmission apparatus, and a coil 220 that receives power from the resonance coil 210.
  • the material of the resonance coil 210 is, for example, copper (Cu).
  • Cu copper
  • the resonance coil 210 for example, a spiral coil having a diameter of 30 cm is used.
  • the resonance coil 210 constitutes an LC resonance circuit including an inductance L and a capacitance C, and has a resonance frequency that is the same as the transmission frequency.
  • the capacitance C is obtained by providing the capacitor 211 between the coil wires of the resonance coil 210, but may be obtained by the stray capacitance of the resonance coil 210 without using the capacitor 211.
  • the resonance frequency of the resonance coil 210 is, for example, 10 MHz.
  • an alternating current having the same frequency as the transmission frequency flows through the resonance coil 210.
  • An arrow 212 in FIG. 12 indicates the direction of power transmission.
  • the material of the coil 220 is, for example, copper (Cu).
  • the diameter of the coil 220 is smaller than the diameter of the resonance coil 210, and the coil 220 is disposed inside the resonance coil 210. By making the diameter of the coil 220 smaller than that of the resonance coil 210, it is possible to reduce the rate at which the magnetic field generated by the coil 220 affects power transmission by magnetic field resonance.
  • the coil 220 When an alternating current flows through the resonance coil 210, the coil 220 receives electric power from the resonance coil 210 by electromagnetic induction and generates an alternating current.
  • the receipt of power from the resonance coil 210 is not performed by wiring or the like, but is performed by electromagnetic induction.
  • the magnetic field resonance power receiving apparatus 200 includes a magnetic field shield 230 that changes a magnetic field generated by the resonance coil 210 and a magnetic body 231.
  • a magnetic material such as ferrite is used for the magnetic field shield 230.
  • the magnetic field shield 230 is located below the resonance coil 210. That is, the magnetic field shield 230 is disposed on the side opposite to the side where power transmission by magnetic field resonance is performed with respect to the resonance coil 210.
  • the magnetic field shield 230 changes the resonance frequency of the resonance coil 210 by changing the magnetic field generated by the resonance coil 210 according to the position relative to the resonance coil 210 and the shape thereof.
  • the magnetic field shield 230 further suppresses the magnetic field generated by the resonance coil 210 from being affected by an external magnetic material, and further suppresses the magnetic field generated by the resonance coil 210 from affecting external electronic components. .
  • the magnetic body 231 includes a rotation mechanism 232.
  • a fine mechanism such as a VCM (Voice Coil Motor), a piezo element, or a MEMS (Micro Electro Mechanical Systems) is used.
  • VCM Vehicle Coil Motor
  • piezo element a piezo element
  • MEMS Micro Electro Mechanical Systems
  • the magnetic body 231 is mounted above the magnetic field shield 230 so as to be positioned between the resonance coil 210 and the magnetic field shield 230.
  • the magnetic body 231 changes the resonance frequency of the resonance coil 210 by changing the magnetic field generated by the resonance coil 210 according to the position relative to the resonance coil 210 and the shape thereof.
  • the magnetic field resonance power receiving apparatus 200 includes a frame 250 that supports the resonance coil 210, the coil 220, and the magnetic field shield 230. Further, the magnetic field resonance power receiving apparatus 200 includes a rectifier circuit 250 that rectifies an alternating current generated in the coil 220, a battery 260 that stores electric power by the current rectified by the rectifier circuit 250, and a current ( And a control circuit 240 for measuring power).
  • the current flowing through the coil 220 increases as the resonance frequency of the resonance coil 210 approaches the target frequency, and becomes maximum when the resonance frequency of the resonance coil 210 matches the target frequency.
  • the control circuit 240 has a memory 241 and stores the measured current value in the memory 241. Further, the control circuit 240 is connected to the rotation mechanism 232 of the magnetic body 231 and controls the operation of the rotation mechanism 232.
  • FIG. 14 is a flowchart illustrating an example of an adjustment procedure of the magnetic field resonance power receiving apparatus according to the fifth embodiment.
  • Step S201 The control circuit 240 controls the rotation mechanism 232 of the magnetic body 231 to move the position of the magnetic body 231 to the initial position.
  • the initial position is set to a position farthest from the resonance coil 210. That is, the magnetic body 231 is disposed so as to be in parallel with the resonance coil 210.
  • Step S202 The control circuit 240 measures the current rectified by the rectifier circuit 250.
  • Step S203 The control circuit 240 determines whether or not the measurement in step S202 is the first time. In the first case, the process proceeds to step S204. If it is not the first time, that is, if it is the second time or later, the process proceeds to step S205.
  • Step S204 The control circuit 240 stores the current value measured in step S202 in the memory 241.
  • Step S205 The control circuit 240 determines whether or not the current value measured in step S202 is larger than the previous measurement value stored in the memory 241. If larger, the process proceeds to step S204. If not, the process is terminated. Or after returning the position of the magnetic body 231 to the last position, a process is complete
  • Step S206 The control circuit 240 controls the rotation mechanism 232 of the magnetic body 231 to rotate the position of the magnetic body 231 by a specified step amount, and the process proceeds to step S202.
  • adjustment can be performed so that the current of the resonance coil 210 is maximized.
  • the resonance frequency of the resonance coil 210 can be adjusted to a target frequency.
  • the resonance frequency of the resonance coil 210 is adjusted using the magnetic body 231 including the fine rotation mechanism 232 provided separately from the magnetic field shield 230.
  • the mechanism can be made smaller than in the case where the position of the magnetic field shield 230 itself is adjusted. Accordingly, by mounting the magnetic field resonance power receiving apparatus 200 on an electronic device such as a mobile phone that is required to be downsized, it is possible to achieve both downsizing of the electronic device and improvement in efficiency of power transmission.
  • the magnetic resonance power receiving apparatus has been described.
  • the resonance frequency setting method of the fifth embodiment can also be applied to the magnetic field resonance power transmitting apparatus. .
  • the resonance frequency setting method of the fifth embodiment is applied to the magnetic field resonance power transmission apparatus 100b of the fourth embodiment, and the magnetic body 231 including a rotation mechanism such as the magnetic field resonance power reception apparatus 200 is used as a magnetic field.
  • the rotation mechanism of the magnetic body 231 may be controlled by the control circuit 170 provided on the shield 130.
  • the resonance frequency adjusting method of the second embodiment can be applied to the magnetic field resonance power receiving apparatus 200 of the fifth embodiment.
  • a position adjusting screw 140 like the magnetic field resonance power transmitting apparatus 100a of the second embodiment is provided for the magnetic field shield 230 of the magnetic field resonance power receiving apparatus 200, and the position of the magnetic field shield 230 is adjusted by the position adjusting screw 140. It is good to do.
  • the magnetic field shield adjusting method as in the third embodiment may be applied to the magnetic field shield 230 of the magnetic field resonance power receiving apparatus 200 according to the fifth embodiment.
  • the resonance frequency adjusting method of the fourth embodiment can be applied to the magnetic field resonance power receiving apparatus 200 of the fifth embodiment.
  • the magnetic field shield 230 of the magnetic field resonance power receiving apparatus 200 is provided with a position adjusting screw 140 and a motor 180 like the magnetic field resonance power transmission apparatus 100b of the third embodiment, and the motor 180 is controlled by the control circuit 240 to The position of the shield 230 may be adjusted.
  • FIG. 15 is a sequence diagram illustrating an example of an adjustment procedure of the magnetic field resonance wireless power transmission system according to the sixth embodiment.
  • the magnetic field resonance power transmission apparatus 100b according to the fourth embodiment is used as the magnetic field resonance power transmission apparatus
  • the magnetic field resonance power reception apparatus 200 according to the fifth embodiment is used as the magnetic field resonance power reception apparatus.
  • An example will be described. Here, it is assumed that the magnetic field resonance power transmitting apparatus 100b and the magnetic field resonance power receiving apparatus 200 have a structure capable of communication.
  • Step S ⁇ b> 301 The magnetic field resonance power transmission apparatus 100 b executes the detection process of the magnetic field resonance power reception apparatus 200.
  • Step S302 When the magnetic field resonance power receiving apparatus 100b detects the magnetic field resonance power receiving apparatus 200, the magnetic field resonance power receiving apparatus 200 is notified of the detection.
  • Step S ⁇ b> 303 The magnetic field resonance power receiving apparatus 200 executes detection processing of the magnetic field resonance power receiving apparatus 200.
  • Step S304 When the magnetic field resonance power receiving apparatus 200 detects the magnetic field resonance power transmission apparatus 100b, the magnetic field resonance power transmission apparatus 100b is notified of the detection.
  • Step S305 The magnetic field resonance power transmission apparatus 100b executes the adjustment process of the resonance frequency of the resonance coil 110 shown in FIG.
  • Step S306 When the adjustment process of the resonance frequency of the resonance coil 110 is completed, the magnetic field resonance power transmitting apparatus 100b notifies the magnetic field resonance power receiving apparatus 200 of the completion of the adjustment.
  • Step S307 The magnetic field resonance power receiving apparatus 200 performs a process of adjusting the resonance frequency of the resonance coil 210 shown in FIG.
  • the initialization of the position of the magnetic body 231 in step S201 may be executed in advance immediately after step S304.
  • Step S308 When the adjustment process of the resonance frequency of the resonance coil 210 is completed, the magnetic field resonance power receiving apparatus 200 notifies the magnetic field resonance power transmission apparatus 100b of the completion of the adjustment and ends the process.
  • Step S309 The magnetic field resonance power receiving apparatus 200 starts power transmission by magnetic field resonance and ends the process.
  • the resonance frequency of the resonance coils 110 and 210 can be adjusted to a target frequency, and the efficiency of power transmission can be improved.
  • the above merely illustrates the principle of the present invention.
  • many modifications and changes can be made by those skilled in the art, and the present invention is not limited to the precise configuration and application shown and described above, and all corresponding modifications and equivalents may be And the equivalents thereof are considered to be within the scope of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
PCT/JP2009/070467 2009-12-07 2009-12-07 磁界共鳴送電装置、及び、磁界共鳴受電装置 WO2011070637A1 (ja)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CN200980162582.0A CN102640392B (zh) 2009-12-07 2009-12-07 磁场共振送电装置、以及磁场共振受电装置
PCT/JP2009/070467 WO2011070637A1 (ja) 2009-12-07 2009-12-07 磁界共鳴送電装置、及び、磁界共鳴受電装置
EP09852034.9A EP2512006B1 (en) 2009-12-07 2009-12-07 Magnetic-field resonance power transmission device and magnetic-field resonance power receiving device
JP2011544999A JP5510460B2 (ja) 2009-12-07 2009-12-07 磁界共鳴送電装置、及び、磁界共鳴受電装置
KR1020127011956A KR20120081195A (ko) 2009-12-07 2009-12-07 자계 공명 송전 장치, 및, 자계 공명 수전 장치
KR1020147027592A KR101482506B1 (ko) 2009-12-07 2009-12-07 자계 공명 송전 장치, 및, 자계 공명 수전 장치
US13/476,185 US20120229140A1 (en) 2009-12-07 2012-05-21 Magnetic resonance electric power-transmitting apparatus and magnetic resonance electric power-receiving apparatus
US15/670,540 US20170338664A1 (en) 2009-12-07 2017-08-07 Magnetic resonance electric power-transmitting apparatus and magnetic resonance electric power-receiving apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2009/070467 WO2011070637A1 (ja) 2009-12-07 2009-12-07 磁界共鳴送電装置、及び、磁界共鳴受電装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/476,185 Continuation US20120229140A1 (en) 2009-12-07 2012-05-21 Magnetic resonance electric power-transmitting apparatus and magnetic resonance electric power-receiving apparatus

Publications (1)

Publication Number Publication Date
WO2011070637A1 true WO2011070637A1 (ja) 2011-06-16

Family

ID=44145209

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/070467 WO2011070637A1 (ja) 2009-12-07 2009-12-07 磁界共鳴送電装置、及び、磁界共鳴受電装置

Country Status (6)

Country Link
US (2) US20120229140A1 (zh)
EP (1) EP2512006B1 (zh)
JP (1) JP5510460B2 (zh)
KR (2) KR20120081195A (zh)
CN (1) CN102640392B (zh)
WO (1) WO2011070637A1 (zh)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011135754A (ja) * 2009-12-25 2011-07-07 Toyota Motor Corp 非接触受電装置およびその製造方法
CN103620712A (zh) * 2011-06-30 2014-03-05 丰田自动车株式会社 送电装置、受电装置以及电力传输系统
JP2014057023A (ja) * 2012-09-14 2014-03-27 Toko Inc ワイヤレス充電台
US8933589B2 (en) 2012-02-07 2015-01-13 The Gillette Company Wireless power transfer using separately tunable resonators
EP2765683A4 (en) * 2012-04-17 2015-06-03 Nitto Denko Corp WIRELESS POWER TRANSMISSION DEVICE
EP2648306A3 (de) * 2012-04-05 2016-07-27 Robert Bosch Gmbh Drahtlose Energieübertragung
JP2016164975A (ja) * 2015-02-24 2016-09-08 Tdk株式会社 コイルユニット、ワイヤレス給電装置、ワイヤレス受電装置およびワイヤレス電力伝送装置
JP2016189659A (ja) * 2015-03-30 2016-11-04 Tdk株式会社 コイルモジュール、給電装置、受電装置、および非接触電力伝送装置
US10446316B2 (en) 2014-06-25 2019-10-15 Ihi Corporation Coil device and inductance-changing mechanism
US10476320B2 (en) 2017-02-28 2019-11-12 Omron Automotive Electronics Co., Ltd. Power transmission device
JP2022525359A (ja) * 2019-03-15 2022-05-12 ヴァレオ エキプマン エレクトリク モトゥール 自動車両を再充電するために共振誘導結合を介して非接触で電力を伝送する装置
US20220247213A1 (en) * 2010-11-24 2022-08-04 University Of Florida Research Foundation, Inc. Wireless power transfer via electrodynamic coupling
JP2023011425A (ja) * 2021-07-12 2023-01-24 伊藤忠Ｔｃ建機株式会社 工事用エレベータ

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103959604B (zh) * 2012-11-26 2017-09-01 日东电工株式会社 无线电力传送装置
US20140191568A1 (en) * 2013-01-04 2014-07-10 Mojo Mobility, Inc. System and method for powering or charging multiple receivers wirelessly with a power transmitter
JP2015517293A (ja) * 2013-03-06 2015-06-18 ハンシンキジョン カンパニー, リミテッドHanshinkijeonco., Ltd. 自動位置調整無線充電器及びそれを用いた充電方法
JP6140005B2 (ja) * 2013-06-27 2017-05-31 株式会社東芝 送電装置、受電装置および無線電力伝送システム
KR101509929B1 (ko) * 2013-09-27 2015-04-07 현대자동차주식회사 전기자동차의 무선전력수신장치
CN103647357B (zh) * 2013-12-06 2016-05-18 奇瑞汽车股份有限公司 一种无线充电发射电路
WO2016010772A2 (en) * 2014-07-17 2016-01-21 The University Of Florida Research Foundation, Inc. Wireless power transfer using one or more rotating magnets in a receiver
CN104857665A (zh) * 2015-05-29 2015-08-26 复旦大学 一种自发电且无线传输供电的led跳绳
US20170063169A1 (en) * 2015-08-26 2017-03-02 Qualcomm Incorporated Receiver detuning compensation using transmitter ferrite
US10516304B2 (en) * 2015-12-22 2019-12-24 Intel Corporation Wireless charging coil placement for reduced field exposure
US10411492B2 (en) 2015-12-23 2019-09-10 Intel Corporation Wireless power transmitter shield with capacitors
JP2018143062A (ja) * 2017-02-28 2018-09-13 オムロンオートモーティブエレクトロニクス株式会社 送電装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62126607A (ja) 1985-11-27 1987-06-08 Fujitsu Ltd 可変インダクタンスコイル
JP2007125926A (ja) * 2005-11-01 2007-05-24 Hitachi Plant Technologies Ltd 非接触給電方法及び非接触給電装置
JP2007142088A (ja) 2005-11-17 2007-06-07 Tdk Corp リーケージインダクタンス可変調整インバータ用トランス
JP2009081945A (ja) * 2007-09-26 2009-04-16 Seiko Epson Corp 送電制御装置、送電装置、受電装置、無接点電力伝送システム、電子機器、２次コイル位置検出方法および１次コイルの位置決め方法
JP2009106136A (ja) * 2007-10-25 2009-05-14 Toyota Motor Corp 電動車両および車両用給電装置
JP2009152862A (ja) 2007-12-20 2009-07-09 Tamura Seisakusho Co Ltd 可変インダクタンスコイル、並びにそれを備えたブースターアンテナおよび読取書込装置

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61146008A (ja) * 1984-12-20 1986-07-03 Matsushita Electric Ind Co Ltd 共振器
JPS6411402A (en) * 1987-07-03 1989-01-17 Mitsubishi Electric Corp Variable frequency resonance circuit
JP2500667B2 (ja) * 1994-05-11 1996-05-29 株式会社村田製作所 高周波コイルの製造方法
US6252354B1 (en) * 1996-11-04 2001-06-26 Applied Materials, Inc. RF tuning method for an RF plasma reactor using frequency servoing and power, voltage, current or DI/DT control
JPH10247129A (ja) * 1997-03-05 1998-09-14 Hosiden Corp 座標入力装置
US6693553B1 (en) * 1997-06-02 2004-02-17 Schlumberger Technology Corporation Reservoir management system and method
JP2001185939A (ja) * 1999-12-24 2001-07-06 Mitsubishi Electric Corp アンテナコイル及び電磁誘導型非接触データキャリアシステム
US7808236B1 (en) * 2002-12-09 2010-10-05 Ferro Solutions, Inc. Energy harvester utilizing external magnetic field
US8228194B2 (en) * 2004-10-28 2012-07-24 University Of Pittsburgh - Of The Commonwealth System Of Higher Education Recharging apparatus
US20070082687A1 (en) * 2005-10-07 2007-04-12 Microsoft Corporation Station selecting transmitter
JP2008022056A (ja) 2006-07-10 2008-01-31 Sumida Corporation 送信用アンテナ及びキーレスエントリシステム
US8283812B2 (en) * 2007-10-09 2012-10-09 Powermat Technologies, Ltd. Inductive power providing system having moving outlets
US8487479B2 (en) * 2008-02-24 2013-07-16 Qualcomm Incorporated Ferrite antennas for wireless power transfer
WO2009149426A2 (en) * 2008-06-05 2009-12-10 Qualcomm Incorporated Ferrite antennas for wireless power transfer
US8657035B2 (en) * 2008-06-06 2014-02-25 Schlumberger Technology Corporation Systems and methods for providing wireless power transmissions and tuning a transmission frequency
US8111042B2 (en) * 2008-08-05 2012-02-07 Broadcom Corporation Integrated wireless resonant power charging and communication channel
US9473209B2 (en) * 2008-08-20 2016-10-18 Intel Corporation Wireless power transfer apparatus and method thereof
JP4743244B2 (ja) * 2008-09-18 2011-08-10 トヨタ自動車株式会社 非接触受電装置
US8723366B2 (en) * 2008-09-27 2014-05-13 Witricity Corporation Wireless energy transfer resonator enclosures
EP2374197B1 (en) * 2009-01-06 2016-04-06 Access Business Group International LLC Inductive power supply
JP5365276B2 (ja) * 2009-03-17 2013-12-11 ソニー株式会社 電力伝送システムおよび電力出力装置
EP2483987A2 (en) * 2009-09-28 2012-08-08 Powermat Technologies Ltd. System and method for regulating inductive power transmission
JP2011120382A (ja) * 2009-12-03 2011-06-16 Toyota Motor Corp 非接触給電設備、非接触受電装置および非接触給電システム
US8143746B2 (en) * 2009-12-21 2012-03-27 Alcatel Lucent Automatic tuning for wireless power transfer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62126607A (ja) 1985-11-27 1987-06-08 Fujitsu Ltd 可変インダクタンスコイル
JP2007125926A (ja) * 2005-11-01 2007-05-24 Hitachi Plant Technologies Ltd 非接触給電方法及び非接触給電装置
JP2007142088A (ja) 2005-11-17 2007-06-07 Tdk Corp リーケージインダクタンス可変調整インバータ用トランス
JP2009081945A (ja) * 2007-09-26 2009-04-16 Seiko Epson Corp 送電制御装置、送電装置、受電装置、無接点電力伝送システム、電子機器、２次コイル位置検出方法および１次コイルの位置決め方法
JP2009106136A (ja) * 2007-10-25 2009-05-14 Toyota Motor Corp 電動車両および車両用給電装置
JP2009152862A (ja) 2007-12-20 2009-07-09 Tamura Seisakusho Co Ltd 可変インダクタンスコイル、並びにそれを備えたブースターアンテナおよび読取書込装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2512006A4

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9130408B2 (en) 2009-12-25 2015-09-08 Toyota Jidosha Kabushiki Kaisha Non contact-power receiving/transmitting device and manufacturing method therefor
JP2011135754A (ja) * 2009-12-25 2011-07-07 Toyota Motor Corp 非接触受電装置およびその製造方法
US11689089B2 (en) * 2010-11-24 2023-06-27 University Of Florida Research Foundation, Inc. Wireless power transfer via electrodynamic coupling
US20220247213A1 (en) * 2010-11-24 2022-08-04 University Of Florida Research Foundation, Inc. Wireless power transfer via electrodynamic coupling
CN103620712A (zh) * 2011-06-30 2014-03-05 丰田自动车株式会社 送电装置、受电装置以及电力传输系统
US9634495B2 (en) 2012-02-07 2017-04-25 Duracell U.S. Operations, Inc. Wireless power transfer using separately tunable resonators
US8933589B2 (en) 2012-02-07 2015-01-13 The Gillette Company Wireless power transfer using separately tunable resonators
EP2648306A3 (de) * 2012-04-05 2016-07-27 Robert Bosch Gmbh Drahtlose Energieübertragung
EP2765683A4 (en) * 2012-04-17 2015-06-03 Nitto Denko Corp WIRELESS POWER TRANSMISSION DEVICE
US9755698B2 (en) 2012-04-17 2017-09-05 Nitto Denko Corporation Wireless power transmission apparatus
JP2014057023A (ja) * 2012-09-14 2014-03-27 Toko Inc ワイヤレス充電台
US10446316B2 (en) 2014-06-25 2019-10-15 Ihi Corporation Coil device and inductance-changing mechanism
JP2016164975A (ja) * 2015-02-24 2016-09-08 Tdk株式会社 コイルユニット、ワイヤレス給電装置、ワイヤレス受電装置およびワイヤレス電力伝送装置
JP2016189659A (ja) * 2015-03-30 2016-11-04 Tdk株式会社 コイルモジュール、給電装置、受電装置、および非接触電力伝送装置
US10476320B2 (en) 2017-02-28 2019-11-12 Omron Automotive Electronics Co., Ltd. Power transmission device
JP2022525359A (ja) * 2019-03-15 2022-05-12 ヴァレオ エキプマン エレクトリク モトゥール 自動車両を再充電するために共振誘導結合を介して非接触で電力を伝送する装置
JP7341249B2 (ja) 2019-03-15 2023-09-08 ヴァレオ エキプマン エレクトリク モトゥール 自動車両を再充電するために共振誘導結合を介して非接触で電力を伝送する装置
JP2023011425A (ja) * 2021-07-12 2023-01-24 伊藤忠Ｔｃ建機株式会社 工事用エレベータ

Also Published As

Publication number Publication date
KR20120081195A (ko) 2012-07-18
EP2512006A1 (en) 2012-10-17
JP5510460B2 (ja) 2014-06-04
US20170338664A1 (en) 2017-11-23
CN102640392B (zh) 2015-04-01
KR20140130227A (ko) 2014-11-07
CN102640392A (zh) 2012-08-15
EP2512006A4 (en) 2013-05-01
EP2512006B1 (en) 2017-02-01
US20120229140A1 (en) 2012-09-13
KR101482506B1 (ko) 2015-01-13
JPWO2011070637A1 (ja) 2013-04-22

Similar Documents

Publication Publication Date Title
JP5510460B2 (ja) 磁界共鳴送電装置、及び、磁界共鳴受電装置
JP5915667B2 (ja) 電力伝送装置、電力伝送システム、及び電力伝送方法
JP5502898B2 (ja) 無線電力伝送装置及び無線電力伝送方法
JP5798474B2 (ja) 給電装置の駆動方法
JP5689682B2 (ja) 誘導電力供給装置
JP5673783B2 (ja) 磁界共鳴型電力伝送システムにおける送電装置、および受電装置
CN107516946B (zh) 检测装置
EP2693601B1 (en) Power supply device, power supply system, and electronic device
JP5527407B2 (ja) 無線による受電装置及び受電方法
JP5920363B2 (ja) 受電装置、電力伝送システム、及び電力伝送方法
JP2010539821A (ja) ワイヤレス電力磁気共振器から生じた電力を最大にすること
WO2012071088A1 (en) Wireless power transfer via electrodynamic coupling
WO2016181603A1 (ja) 発電装置
CN107370249B (zh) 电力发送装置以及非接触电力提供系统
US9791524B2 (en) MRI acoustic system, acoustic output device, and electro-acoustic transducer
US10476320B2 (en) Power transmission device
JP2012191699A (ja) 磁界共鳴を利用した無線電力伝送方法
JP5404573B2 (ja) 無線電力伝送装置および無線電力受信装置
CN106533063A (zh) 闭环vcm的实现方法
JP2018143062A (ja) 送電装置
WO2015015635A1 (ja) 非接触電力伝送装置及び非接触電力伝送システム
KR20180032349A (ko) 코일 모듈 및 그를 이용한 무선 전력 송신 장치
JPWO2011099071A1 (ja) 磁界共鳴型電力伝送システムにおける共振周波数制御方法、送電装置、および受電装置
JP2011160496A (ja) 送電装置、受電装置及び電力伝送システム
WO2021101784A1 (en) Tunable electrodynamic wireless power receivers

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200980162582.0

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09852034

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2011544999

Country of ref document: JP

ENP Entry into the national phase

Ref document number: 20127011956

Country of ref document: KR

Kind code of ref document: A

REEP Request for entry into the european phase

Ref document number: 2009852034

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2009852034

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE