WO2012176569A1 - Système de transmission d'énergie sans contact - Google Patents

Système de transmission d'énergie sans contact Download PDF

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Publication number
WO2012176569A1
WO2012176569A1 PCT/JP2012/063003 JP2012063003W WO2012176569A1 WO 2012176569 A1 WO2012176569 A1 WO 2012176569A1 JP 2012063003 W JP2012063003 W JP 2012063003W WO 2012176569 A1 WO2012176569 A1 WO 2012176569A1
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WO
WIPO (PCT)
Prior art keywords
temperature detection
power transmission
detection unit
transmission system
coil
Prior art date
Application number
PCT/JP2012/063003
Other languages
English (en)
Japanese (ja)
Inventor
北村　浩康
Original Assignee
パナソニック 株式会社
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Filing date
Publication date
Application filed by パナソニック 株式会社 filed Critical パナソニック 株式会社
Publication of WO2012176569A1 publication Critical patent/WO2012176569A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/46—Accumulators structurally combined with charging apparatus
    • 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
    • H02J50/10—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
    • H02J50/60—Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
    • 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
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/327—Means for protecting converters other than automatic disconnection against abnormal temperatures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a non-contact power transmission system that performs non-contact power transmission between devices using electromagnetic induction.
  • a non-contact power transmission system in which a secondary battery (battery) for power supply built in an electronic device such as a digital camera or a personal computer is charged in a non-contact manner.
  • a primary coil and a secondary coil are provided in an electronic device and a dedicated charger corresponding to the electronic device, respectively.
  • alternating power is transmitted from the charger to the electronic device through electromagnetic induction between both coils, and the alternating power is converted into direct current power by the electronic device, whereby the secondary battery. Is charged.
  • temperature sensors are arranged at a plurality of measurement points set around the primary coil.
  • a metal foreign object is interposed between the primary coil and the secondary coil. Power transmission by the charger is stopped.
  • fever of a metal foreign material can be suppressed, the thermal deformation of a charger and an electronic device can be avoided exactly.
  • An object of the present invention is to provide a non-contact power transmission system capable of simplifying the configuration while making it possible to detect heat generation of a metal foreign object when performing power transmission in a non-contact manner.
  • the present invention provides a primary coil that generates an alternating magnetic flux by supplying alternating power, and a secondary coil that receives the alternating power in linkage with the alternating magnetic flux from the primary coil.
  • a non-contact power transmission system for supplying received power received by the secondary coil to a load, a temperature detection unit disposed between the primary coil and the secondary coil, And detecting the temperature of the temperature detection unit through the plurality of temperature detection elements, and detecting the temperature according to the detected temperature of the temperature detection unit
  • An abnormality detection unit that detects abnormal heating of a part, and a power transmission control unit that stops supply of alternating power to the primary coil when the abnormality detection unit detects abnormal heating of the temperature detection unit.
  • the temperature detection unit is formed in a sheet shape.
  • the plurality of temperature detection elements are arranged in a lattice pattern in the temperature detection unit.
  • the temperature detection unit links the alternating magnetic flux generated from the primary coil and receives the alternating power and the temperature using the alternating power of the receiving coil. It is preferable that the power supply which produces
  • the temperature detection unit is disposed on the primary coil.
  • the non-contact power transmission system includes a housing that covers the primary coil, and the temperature detection unit is disposed on the housing.
  • the temperature detection unit is disposed on the secondary coil.
  • the non-contact power transmission system includes a housing that covers the secondary coil, and the temperature detection unit is disposed on the housing.
  • the abnormality detection unit is connected to the power transmission control unit so as to be capable of wireless communication.
  • the temperature detection unit is magnetically coupled to the primary coil and has a first end and a second end, and a first of the magnetic coupling coils.
  • a switching element connected between the first end and the second end, and when the abnormality detection unit detects abnormal heating of the temperature detection unit, the abnormality detection unit detects the first of the magnetic coupling coil through the switching element.
  • the first and second ends are short-circuited to change the amplitude of the alternating power generated in the primary coil, and the power transmission control unit is configured to change the amplitude of the alternating power generated in the primary coil based on the change in the amplitude of the alternating power generated in the primary coil. It is preferable to detect abnormal heating of the temperature detector.
  • the non-contact power transmission system includes a device on which the secondary coil is mounted, and the device includes a wireless communication unit that performs wireless communication with the power transmission control unit, and the abnormality detection
  • the unit is communicably connected to the wireless communication unit, and wirelessly transmits a detection signal indicating whether or not abnormal heating of the temperature detection unit has been detected to the power transmission control unit via the wireless communication unit.
  • the abnormality detection unit is connected to the wireless communication unit so as to be capable of wireless communication.
  • the temperature detection unit is coupled to the secondary coil and has a first end and a second end, and a first of the magnetic coupling coil.
  • a switching element connected between the end and the second end, and when the abnormality detection unit detects abnormal heating of the temperature detection unit, the first of the magnetic coupling coil is detected through the switching element.
  • the second end is short-circuited to change the amplitude of the alternating power generated in the secondary coil, and the power transmission control unit is configured to change the temperature based on the change in the amplitude of the alternating power generated in the secondary coil. It is preferable to detect abnormal heating of the detection unit.
  • the non-contact power transmission system it is possible to simplify the configuration while making it possible to detect the heat generation of the metal foreign object when performing power transmission in a non-contact manner.
  • Sectional drawing which shows schematic structure of the non-contact electric power transmission system of 1st Embodiment.
  • the perspective view which shows the perspective structure of the temperature detection sheet
  • the circuit diagram which shows the system configuration
  • the graph which shows the relationship between the temperature of a linear thermistor, and the electric potential of the terminal provided in the sensor control part about the non-contact electric power transmission system of 1st Embodiment.
  • the flowchart which shows the procedure of the abnormality detection process by the non-contact electric power transmission system of 1st Embodiment.
  • Sectional drawing which shows the schematic structure about 2nd Embodiment of the non-contact electric power transmission system concerning this invention.
  • the circuit diagram which shows the system configuration
  • (A) is a time chart which shows the example of switching of ON / OFF of a switching element about the non-contact electric power transmission system of 2nd Embodiment.
  • (B) is a time chart showing a transition example of alternating power (voltage) induced in the secondary coil.
  • (C) is a time chart showing a transition example of alternating power (voltage) induced in the primary coil.
  • (D) is a time chart showing a transition example of a DC voltage that is rectified by the voltage induced in the primary coil and taken into the primary side control unit.
  • the perspective view which shows the perspective structure of the temperature detection sheet
  • the circuit diagram which shows the structure of the temperature detection sheet
  • Sectional drawing which shows schematic structure of the non-contact electric power transmission system of 5th Embodiment.
  • the perspective view which shows the perspective structure of the temperature detection sheet
  • the circuit diagram which shows the structure of the temperature detection sheet
  • (A) is a time chart which shows the transition example of the alternating power (voltage) induced by the secondary coil about the non-contact electric power transmission system of 5th Embodiment.
  • (B) is a time chart showing a transition example of alternating power (voltage) induced in the primary coil.
  • (C) is a time chart showing an example of switching on / off of the switching element.
  • the circuit diagram which shows the structure of the charger and portable apparatus which comprise the non-contact electric power transmission system of 5th Embodiment.
  • the perspective view which shows the perspective structure of the temperature detection sheet
  • this non-contact power transmission system includes a portable device 1 such as a digital camera or a notebook personal computer equipped with a secondary battery 10 that functions as a power source (load), and a secondary battery of the portable device 1. And a charger 2 that supplies electric power to 10 in a non-contact manner.
  • a portable device 1 such as a digital camera or a notebook personal computer equipped with a secondary battery 10 that functions as a power source (load), and a secondary battery of the portable device 1.
  • a charger 2 that supplies electric power to 10 in a non-contact manner.
  • the charger 2 includes a primary coil module 20 that transmits power to the mobile device 1. Further, the charger 2 protects various electronic components from the external environment by covering the outside of the various electronic components including the primary coil module 20 with the housing 21.
  • the upper surface 21a of the housing 21 is a portion where the portable device 1 is placed.
  • the primary coil module 20 includes a primary coil L1 that generates a magnetic flux when power is supplied and a magnetic body M1 that is formed of a ferrite-based member that suppresses leakage of magnetic flux from the primary coil L1.
  • Primary coil L1 includes a planar coil in which a conducting wire is wound in the planar direction. In the present embodiment, the number of turns of the primary coil L1 is set to 20 turns. Further, the outer diameter of the primary coil L1 is set to 40 [mm]. The total thickness of the primary coil L1 and the magnetic body M1 is about 1 [mm].
  • the temperature detection sheet 30 which detects the temperature of the periphery is affixed on the end surface on the opposite side to the end surface with which the magnetic body M1 of the primary coil L1 contact
  • the temperature detection sheet 30 is a sheet-like member formed of a polymer film such as a PET (polyethylene terephthalate) resin, for example, and includes a plurality of linear shapes inside the temperature detection sheet 30.
  • the thermistors SH1 to SH5 and SV1 to SV5 are formed in a lattice shape.
  • the plurality of linear thermistors SH1 to SH5 and SV1 to SV5 are temperature detection elements whose resistance value increases as the temperature of the linear thermistors SH1 to SH5 and SV1 to SV5 increases.
  • a plurality of linear thermistors SH1 to SH5 extending in the x-axis direction and a plurality of linear thermistors SV1 to SV5 extending in the y-axis direction in the figure are mutually connected by an insulating layer provided therebetween. Insulated. Lands LH11 to LH15, LH21 to LH25, LV11 to LV15, and LV21 to L25 are formed at both ends of each of the linear thermistors SH1 to SH5, SV1 to SV5.
  • Each of the linear thermistors SH1 to SH5, SV1 to SV5 is electrically connected to a processing circuit (not shown) built in the temperature detection sheet 30 via the two lands LH11 to LH15, LH21 to LH25, LV11 to LV15, and LV21 to L25. It is connected to the.
  • a thermistor (not shown) having resistance temperature characteristics according to the linear thermistors SH1 to SH5 and SV1 to SV5 functioning as a part for detecting the ambient temperature (room temperature) around the outer edge of the temperature detection sheet 30. Is provided.
  • the temperature detection sheet 30 formed in a sheet shape that functions as a temperature detection unit including the linear thermistors SH1 to SH5, SV1 to SV5, processing circuits thereof, and the like is used. Thereby, since the temperature detection sheet 30 can be easily affixed on the upper surface of the primary coil L1, attachment of the temperature detection sheet 30 is easy.
  • the portable device 1 includes a secondary coil module 11 that receives power transmitted from the charger 2. Moreover, the portable device 1 protects them from the external environment by covering the outer periphery of various electronic components including the secondary coil module 11 and the secondary battery 10 with the housing 12.
  • the secondary coil module 11 is formed of a secondary coil L2 that generates current by interlinking with the magnetic flux generated from the primary coil L1, and a ferrite-based member that suppresses leakage of magnetic flux from the secondary coil L2. And the magnetic body M2. Similar to the primary coil L1, the secondary coil L2 includes a planar coil. In the present embodiment, the number of turns of the secondary coil L2 is set to 15 turns. The outer diameter of the secondary coil L2 is set to 35 [mm]. The total thickness of the secondary coil L2 and the magnetic body M2 is set to about 0.5 [mm].
  • the charger 2 includes a series circuit including a primary side LC circuit 22 and a switching element FET1 connected in series, a DC power supply E1 having a power supply voltage of 5 [V], a capacitor C2, And a primary side control unit 23 including a microcomputer.
  • the switching element FET1 is an N-channel MOS transistor.
  • the primary side LC circuit 22 includes a primary coil L1 and a resonance capacitor C1 connected in parallel to each other. This series circuit is connected in parallel to, for example, a DC power supply E1 having a power supply voltage of 5 [V] and a capacitor C2.
  • the switching element FET1 is turned on / off when a control voltage (gate voltage) is applied from the primary side control unit 23.
  • the primary side control part 23 becomes a power transmission control unit which controls supply of the alternating power to the primary coil L1.
  • the oscillation frequency of the alternating power oscillated from the primary coil L1 through on / off of the switching element FET1 is about 100 kHz.
  • the portable device 1 includes a half-wave rectifier circuit including a secondary coil L2 and a diode D1 connected in series, and a secondary battery 10. That is, the alternating power received by the secondary coil L2 is converted into DC power by being half-wave rectified through the diode D1, and the converted DC power is supplied (charged) to the secondary battery 10 functioning as a load. Is done.
  • the temperature detection sheet 30 includes linear thermistors SH1 to SH5, SV1 to SV5, thermistors SA, resistors R1 to R11, and a sensor control unit 31.
  • the sensor control unit 31 includes a microcomputer.
  • a plurality of resistors R1 to R11 are connected in series to the plurality of linear thermistors SH1 to SH5, SV1 to SV5 and the thermistor SA, respectively.
  • a DC power supply E2 having a power supply voltage of 3.3 [V] is connected to each of the resistors R1 to R11. Note that the DC power supply E2 is supplied from the charger 2.
  • the power supply voltage of the DC power supply E2 is divided by the resistances of the linear thermistors SH1 to SH5, SV1 to SV5 and the resistances R1 to R10, and the respective potentials are supplied to the sensor control unit 31 via the terminals A1 to A10. Supplied. Further, the power supply voltage of the DC power supply E2 is divided by the thermistor SA and the resistor R11, and the potential is supplied to the sensor control unit 31 via the terminal A11.
  • the sensor control unit 31 is communicably connected to the primary control unit 23 via an appropriate wiring 40 that electrically connects the temperature detection sheet 30 and the charger 2. That is, the sensor control unit 31 and the primary side control unit 23 can exchange various signals via the wiring 40.
  • the sensor control unit 31 monitors the temperatures TH1 to TH5 and TV1 to TV5 of the linear thermistors SH1 to SH5 and SV1 to SV5 based on the potentials of the terminals A1 to A10, and also detects the temperature detection sheet based on the potential of the terminal A11. 30 ambient temperature TB is monitored.
  • the sensor control unit 31 has a nonvolatile memory 31a. As shown in FIG. 4, the memory 31a stores the relationship between the potentials of the terminals A1 to A10 and the temperatures of the linear thermistors SH1 to SH5, SV1 to SV5.
  • the sensor control unit 31 calculates the temperatures of the linear thermistors SH1 to SH5 and SV1 to SV5 from the potentials of the terminals A1 to A10 with reference to the map shown in FIG.
  • the non-volatile memory 31a of the sensor control unit 31 also stores a map (not shown) indicating the relationship between the potential of the terminal A11 and the environmental temperature TB.
  • the sensor control unit 31 performs map calculation of the environmental temperature TB from the potential of the terminal A11 using this map. Then, the sensor control unit 31 compares the temperature of each of the linear thermistors SH1 to SH5 and SV1 to SV5 with the environmental temperature TB to determine whether or not abnormal heating has occurred in the temperature detection sheet 30.
  • the sensor control unit 31 When detecting abnormal heating of the temperature detection sheet 30, the sensor control unit 31 transmits an abnormality detection signal indicating that to the primary control unit 23 via the wiring 40.
  • the sensor control unit 31 is an abnormality detection unit that detects abnormal heating of the temperature detection sheet 30.
  • the primary side control unit 23 stops the on / off switching of the switching element FET1, thereby supplying the alternating power to the primary coil L1. Stop.
  • the temperature of all linear thermistors SH1 to SH5, SV1 to SV5 is calculated from the potentials of the terminals A1 to A10 by map calculation using the map illustrated in FIG. TH1 to TH5 and TV1 to TV5 are respectively detected (step S1).
  • the ambient temperature TB is detected from the potential of the terminal A11 by map calculation (step S2).
  • temperature difference values ⁇ TH1 to ⁇ TH5, ⁇ TV1 to ⁇ TV5 obtained by subtracting the environmental temperature TB from the temperatures TH1 to TH5 and TV1 to TV5 of the respective linear thermistors SH1 to SH5, SV1 to SV5 are calculated (step S3).
  • step S4 it is determined whether any of the calculated temperature difference values ⁇ TH1 to ⁇ TH5, ⁇ TV1 to ⁇ TV5 is equal to or greater than a predetermined value Ta (step S4).
  • the predetermined value Ta is a value for detecting the abnormal heat generation of the metal foreign matter described above, and is obtained through a prior experiment or the like.
  • step S4 NO
  • the sensor control unit 31 once ends this series of processing.
  • step S4 YES
  • the primary side control part 23 step S5
  • the ambient temperature TB around the charger 2 is 25 [° C.].
  • the predetermined value Ta is set to 10 [° C.].
  • a metal foreign object is placed on the upper surface 21a of the housing 21 of the charger 2 above the primary coil L1. If it is, the metal foreign object generates heat and the temperature detection sheet 30 is heated.
  • the linear thermistors are arranged in a lattice pattern on the temperature detection sheet 30, a plurality of temperature sensors are arranged at a plurality of measurement points, respectively. In comparison, the number of temperature detection elements can be reduced while ensuring a wide temperature detection range. For this reason, the structure of the temperature detection sheet 30 can be simplified.
  • the temperature of the linear thermistor SV4 located in the part A is, for example, 25 [° C.] corresponding to the environmental temperature TB. To 40 [° C].
  • the sensor control unit 31 monitors the temperature of the linear thermistor SV4 and the environmental temperature TB based on the potentials of the terminals A7 and A11.
  • the sensor control unit 31 has a temperature difference value obtained by subtracting the environmental temperature TB (25 [° C.]) from the temperature higher than the predetermined value Ta. It detects that it is large and transmits an abnormality detection signal to the primary side control unit 23. Thereby, since supply of the alternating power to the primary coil L1 is stopped, abnormal heat generation of the metal foreign object is suppressed.
  • the temperature detection sheet 30 and the charger 2 are wired 40 as shown in FIG. Just connect via.
  • the communication structure between the temperature detection sheet 30 and the charger 2 can be extremely simplified, it is possible to simplify the configuration of the non-contact power transmission system while making it possible to detect the heat generation of the metal foreign object. it can.
  • the temperature detection sheet 30 is provided with a plurality of linear thermistors SH1 to SH5 and SV1 to SV5.
  • the temperature detection sheet 30 is provided with a sensor control unit 31 that detects abnormal heating of the temperature detection sheet 30 based on temperatures detected through the plurality of linear thermistors SH1 to SH5 and SV1 to SV5.
  • the sensor control unit 31 detects abnormal heating of the temperature detection sheet 30 and stops the supply of alternating power to the primary coil L1.
  • the temperature detection sheet 30 functions as a temperature detection unit including the linear thermistors SH1 to SH5, SV1 to SV5, the sensor control unit 31, and the like, and is formed in a sheet shape. Thereby, since the temperature detection sheet 30 can be easily affixed on the upper surface of the primary coil L1, attachment of the temperature detection sheet 30 becomes easy.
  • linear thermistors SH1 to SH5 and SV1 to SV5 are arranged in a grid pattern. Thereby, the temperature of the temperature detection sheet 30 can be detected more accurately.
  • the temperature detection sheet 30 was attached to the primary coil L1. Thereby, since electrical connection with the temperature detection sheet
  • FIGS. 1 a second embodiment of the non-contact power transmission system according to the present invention will be described with reference to FIGS.
  • the second embodiment differs from the first embodiment in that the temperature detection sheet 30 is provided in the portable device 1. Therefore, in this embodiment, differences from the first embodiment will be mainly described, and the same elements as those in the first embodiment will be denoted by the same reference numerals, and redundant description will be omitted.
  • a schematic configuration of the non-contact power transmission system according to the present embodiment will be described with reference to FIG.
  • the temperature detection sheet 30 is affixed to the end surface of the secondary coil L2 opposite to the end surface in contact with the magnetic body M2 with an adhesive or the like.
  • circuit configuration of the non-contact power transmission system of the present embodiment will be described in detail with reference to FIG. Since the circuit configuration of the temperature detection sheet 30 is the same as the configuration illustrated in FIG. 3, the illustration is omitted here for convenience.
  • the primary-side control unit 23 applies a gate voltage to the switching element FET1 via the gate resistor R20, thereby performing on / off control of the switching element FET1.
  • the primary side control unit 23 includes a terminal B1 connected to a connection point N1 between the primary side LC circuit 22 and the switching element FET1 via a diode D2. That is, the power at the connection point N1 is half-wave rectified and input to the terminal B1.
  • the primary side control unit 23 can acquire the maximum voltage or the like from the voltage waveform of the alternating power generated by the oscillation of the primary coil L1 through the terminal B1.
  • the portable device 1 includes a switching element FET2 that switches between supply and non-supply of the DC power rectified via the diode D1 to the secondary battery 10.
  • the switching element FET2 is composed of a P-channel MOS transistor, and is turned on / off when a gate voltage is applied from the secondary side control unit 13 including a microcomputer via a gate resistor R21.
  • a resistor R22 is provided between the drain and source of the switching element FET2.
  • the portable device 1 includes a load adjustment circuit 14 connected in parallel to a series circuit constituted by the secondary coil L2 and the diode D1. In the load adjustment circuit 14, a resistor R23 and a switching element FET3 composed of an N-channel MOS transistor are connected in series.
  • the resistance value of the resistor R23 is set to about 47 [m ⁇ ].
  • the switching element FET3 is turned on / off when a gate voltage is applied from the secondary side control unit 13 via the gate resistor R24. In the present embodiment, the switching element FET3 is turned on / off while the switching element FET2 is turned off by the secondary side control unit 13, thereby causing the resistor R23 to be a load on the secondary coil L2. , It is switched to a state that does not become a load. As a result, the amplitude of the alternating power received by the secondary coil L2 is changed (modulated). That is, the power reception characteristic of the secondary coil L2 with respect to the power supplied by the primary coil is changed.
  • the change in the power reception characteristics of the secondary coil L2 not only changes the amplitude of the power waveform of the alternating power received by the secondary coil L2, but also the primary coil L1 magnetically coupled to the secondary coil L2.
  • the amplitude of the power waveform of the alternating power is also changed. That is, the amplitude of the power waveform (voltage waveform) of the alternating power induced in the primary coil L1 also changes in accordance with the change in the amplitude of the power waveform (voltage waveform) of the alternating power in the secondary coil L2. Thereby, a change occurs in the amplitude (maximum voltage value) of the voltage waveform of the alternating power generated at the connection point N1 of the charger 2.
  • a temperature detection sheet 30 is connected to the secondary side control unit 13 via an appropriate wiring 41. That is, the secondary side control unit 13 receives the abnormality detection signal transmitted from the temperature detection sheet 30 via the wiring 41. And the secondary side control part 13 supplies electric power to the secondary battery 10 by maintaining the switching element FET2 in the ON state during the period when the alternating power is transmitted from the charger 2.
  • the switching element FET3 is turned on / off while the switching element FET2 is turned off and the state is maintained.
  • the amplitude of the alternating power transmitted by the primary coil L1 is changed (modulated) in accordance with the abnormality detection signal by changing the amplitude of the alternating power received by the secondary coil L2.
  • the secondary side control unit 13, the switching element FET3, and the resistor R23 constitute a wireless communication unit for performing wireless communication with the charger 2.
  • the secondary control unit 13 performs on / off switching of the switching element FET3 based on the abnormality detection signal in the manner shown in FIG.
  • the amplitude of the alternating power received by the secondary coil L2 changes with the amplitude A1a, as shown in FIG. 8B.
  • the amplitude of the alternating power which the primary coil L1 transmits changes with amplitude A2a.
  • FIG. 8D the voltage value of the DC power induced in the primary coil L1 and half-wave rectified by the diode D2 becomes the voltage Va.
  • the information transmitted from the charger 2 is based on the judgment whether the voltage Va of terminal B1 exceeded the predetermined threshold value V0. It is determined whether the logic level is “H” or logic level “L”. That is, in the period T1, it is determined that the information transmitted from the secondary side control unit 13 to the primary side control unit 23 is the logic level “H”.
  • the threshold value V0 is set in advance through experiments or the like as a value that can determine a change in the amplitude of the alternating power induced in the primary coil L1.
  • the amplitude of the alternating power received by the secondary coil L2 decreases from the amplitude A1a to the amplitude A1b.
  • the amplitude of the alternating power which the primary coil L1 transmits falls to amplitude A2b lower than amplitude A2a.
  • the voltage value of the DC power induced in the primary coil L1 and half-wave rectified by the diode D2 also changes from the voltage Va to the voltage Vb. Since the voltage Vb is lower than the threshold value V0, the primary control unit 23 determines that the information transmitted from the secondary control unit 13 in the period T2 is the logic level “L”.
  • the primary side control part 23 demodulates the abnormality detection signal transmitted from the secondary side control part 13 based on such a method.
  • the abnormality detection signal is received, the supply of alternating power to the primary coil L1 is stopped by stopping the on / off switching of the switching element FET1.
  • the fact can be transmitted from the portable device 1 to the charger 2 to stop the power transmission of the charger 2.
  • the temperature detection sheet 30 can be provided in the mobile device 1, it is possible to suppress abnormal heat generation of the metal foreign matter interposed between the charger 2 and the mobile device 1.
  • the temperature detection sheet 30 can be provided in the portable device 1 in this way, even if it is difficult to provide the temperature detection sheet 30 in the charger 2 due to structural restrictions, for example, contactless power
  • the temperature detection sheet 30 can be mounted on the transmission system. For this reason, convenience comes to be improved.
  • the non-contact power transmission system according to the present embodiment also provides the same effects as the effects (1) to (3) of the previous first embodiment or an effect equivalent thereto.
  • the following effect can be obtained instead of the effect (4).
  • the temperature detection sheet 30 is provided in the portable device 1.
  • the fact is transmitted from the temperature detection sheet 30 to the charger 2 via the portable device 1.
  • the temperature detection sheet 30 of the present embodiment includes a power receiving coil L3 that is linked to an alternating magnetic flux generated from the primary coil L1.
  • the power receiving coil L3 is disposed in a region sandwiched between the linear thermistor SV1 and the linear thermistor SV3.
  • the power receiving coil L3 is provided in a layer different from the layer on which the plurality of linear thermistors SH1 to SH5 and SV1 to SV5 are patterned, and is insulated from the linear thermistors SH1 to SH5, SV1 to SV5.
  • the temperature detection sheet 30 of this embodiment uses the alternating power induced in the power receiving coil L3 as the power supply voltage when the alternating magnetic flux generated from the primary coil L1 is linked to the power receiving coil L3.
  • the alternating power induced in the power receiving coil L3 is rectified through a rectifier circuit 32 including a diode D3 and a capacitor C3 to be converted into DC power. Further, the DC power converted through the rectifier circuit 32 is stabilized to, for example, the power supply voltage 3.3 [V] through the regulator 33 and supplied to the sensor control unit 31 and the like.
  • the alternating magnetic flux generated from the primary coil L1 links the power receiving coil L3
  • the alternating power induced in the power receiving coil L3 is used as the power source of the temperature detection sheet 30.
  • the wiring structure of the temperature detection sheet 30 can be simplified.
  • the contactless power transmission system according to the present embodiment also provides the same effects as the effects (1) to (4) of the previous first embodiment or an effect equivalent thereto. In addition, the following effects can be obtained.
  • the temperature detection sheet 30 is provided with the power receiving coil L3 interlinked with the alternating magnetic flux generated from the primary coil L1. Then, the alternating power induced in the power receiving coil L ⁇ b> 3 by the linkage of the alternating magnetic flux is used as the power source for the temperature detection sheet 30. Thereby, since it is not necessary to provide power supply wiring in the temperature detection sheet 30, the wiring structure of the temperature detection sheet 30 can be simplified.
  • a fourth embodiment of the non-contact power transmission system according to the present invention will be described with reference to FIG. 11 and FIG.
  • this embodiment differs in the circuit structure of the temperature detection sheet
  • the circuit configuration of the temperature detection sheet 30 will be described with reference to FIG.
  • the temperature detection sheet 30 has a sufficiently high frequency (for example, 1 [MHz]) compared to the oscillation frequency (100 [kHz]) of the alternating power induced in the primary coil L1.
  • a Colpitts oscillation circuit 34 for oscillating radio waves is provided.
  • the temperature detection sheet 30 includes a switching element SW ⁇ b> 1 that interrupts the power feeding path of the Colpitts oscillation circuit 34.
  • the switching / switching of the switching element SW ⁇ b> 1 is controlled by the sensor control unit 31, so that driving / stopping of the Colpitts oscillation circuit 34 is switched.
  • the sensor control unit 31 normally stops the oscillation of the radio wave from the Colpitts oscillation circuit 34 by maintaining the switching element SW1 in the off state.
  • the sensor control unit 31 oscillates a radio wave from the Colpitts oscillation circuit 34 by performing a process of turning on the switching element SW1 instead of the process of transmitting the abnormality detection signal. That is, in this temperature detection sheet 30, when abnormal heating of the linear thermistors SH1 to SH5 and SV1 to SV5 is detected, radio waves are oscillated.
  • the charger 2 includes a resonance circuit 25 including a coil L4 and a resonance capacitor C4 that functions as a part that receives a radio wave oscillated from the Colpitts oscillation circuit 34.
  • the voltage generated in the resonance circuit 25 when receiving the radio wave is rectified and smoothed by the rectifier circuit 26 including the diode D4 and the capacitor C5, and is taken into the primary side control unit 23 via the terminal B2. . That is, when the radio wave oscillated from the Colpitts oscillation circuit 34 is received via the resonance circuit 25, the potential of the terminal B2 indicates a predetermined voltage value.
  • the primary side control part 23 determines whether the radio wave transmitted from the temperature detection sheet
  • the predetermined threshold value is a value for determining whether or not the radio wave oscillated from the Colpitts oscillation circuit 34 is received, and is set through a prior experiment or the like. And when it determines with having received the radio wave transmitted from the temperature detection sheet
  • the contactless power transmission system according to the present embodiment also has the same effects as the effects (1) to (4) and (6) described above in the first and third embodiments, or this effect.
  • the following effects can be obtained.
  • the sensor control unit 31 provided in the temperature detection sheet 30 and the primary side control unit 23 provided in the charger 2 are connected so as to be capable of wireless communication. Thereby, since it is not necessary to provide the wiring for communication between the temperature detection sheet
  • the temperature detection sheet 30 is attached to a portion of the upper surface 21a of the housing 21 of the charger 2 that is above the primary coil L1 with an adhesive or the like.
  • the temperature detection sheet 30 of this embodiment includes a magnetic coupling coil L5 that is magnetically coupled to the primary coil L1.
  • the magnetic coupling coil L5 is disposed along the outer edge of the temperature detection sheet 30.
  • the magnetic coupling coil L5 is provided in a layer different from the layer on which the linear thermistors SH1 to SH5 and SV1 to SV5 are patterned, and is insulated from the linear thermistors SH1 to SH5 and SV1 to SV5. .
  • one end of the magnetic coupling coil L5 is connected to the ground line, and the other end of the magnetic coupling coil L5 is connected to the ground line via the switching element SW2. Then, the switching of the switching element SW2 on / off is controlled by the sensor control unit 31, whereby the short circuit to the ground line of the magnetic coupling coil L5 and the cancellation of the short circuit are performed. Specifically, the sensor control unit 31 normally releases the short circuit of the magnetic coupling coil L5 by keeping the switching element SW2 off. The sensor control unit 31 short-circuits the magnetic coupling coil L5 to the ground line by performing a process of turning on the switching element SW2 instead of the process of transmitting the abnormality detection signal.
  • the magnetic coupling coil L5 becomes an obstacle and the magnetic coupling between the primary coil L1 and the secondary coil L2 is weakened, so the alternating power transmitted from the primary coil L1 to the secondary coil L2 is reduced.
  • the amplitude of the alternating power induced in the primary coil L1 and the secondary coil L2 changes as shown in FIG. 16, for example. That is, if switching of the switching element SW2 is performed as shown in FIG. 16C, the amplitude of the alternating power induced in the secondary coil L2 when the switching element SW2 is turned on is shown in FIG. As shown in FIG. 4, the amplitude decreases from the amplitude A3a to the amplitude A3b. On the other hand, the amplitude of the alternating power induced in the primary coil L1 increases from the amplitude A4a to the amplitude A4b as shown in FIG.
  • the primary side control unit 23 includes a terminal B3 to which a potential between the drain and ground of the switching element SW1 is applied.
  • the primary side control unit 23 monitors the amplitude of the alternating power induced in the primary coil L1 by monitoring the potential of the terminal B3.
  • the primary-side control unit 23 It is determined that abnormal heating is detected in the temperature detection sheet 30. In this case, the primary side control unit 23 stops the supply of alternating power to the primary coil L1 by stopping the on / off switching of the switching element FET1.
  • an abnormality can be notified from the temperature detection sheet 30 to the charger 2 without providing communication wiring between the temperature detection sheet 30 and the charger 2. For this reason, the structure of a non-contact electric power transmission system can be simplified.
  • the temperature detection sheet 30 is provided with a magnetic coupling coil L5 that includes both ends that can be short-circuited via the switching element SW2 and that is magnetically coupled to the primary coil L1. Moreover, in the sensor control part 31, when the abnormal heating of the temperature detection sheet
  • the temperature detection sheet 30 is pasted on the upper surface 21 a of the housing 21 of the charger 2. Thereby, it becomes easy to detect the heat generation of the metal foreign object, and thus abnormal heat generation of the metal foreign object can be more accurately suppressed.
  • each said embodiment can also be implemented with the following forms which changed this suitably.
  • the abnormality detection signal is wirelessly transmitted from the secondary control unit 13 to the primary control unit 23 by modulating the amplitude of the alternating power induced in the secondary coil L2.
  • the wireless communication device is used to An abnormality detection signal may be transmitted from the secondary control unit 13 to the primary control unit 23.
  • a wireless communication device is not mounted on the mobile device 1 and the charger 2, it may be newly mounted on the mobile device 1 and the charger 2.
  • the power receiving coil L3 is arranged in a region sandwiched between the linear thermistor SV1 and the linear thermistor SV3 of the temperature detection sheet 30, but the shape and arrangement of the power receiving coil L3. Can be appropriately changed.
  • the Colpitts oscillation circuit 34 is used to perform wireless communication between the temperature detection sheet 30 and the charger 2. However, for wireless communication between these, appropriate wireless communication is performed. The thing using an apparatus can be employ
  • the charger 2 is provided with the wireless communication unit that receives the radio wave transmitted from the temperature detection sheet 30, but the wireless communication unit may be provided in the portable device 1.
  • the wireless communication unit may be provided in the portable device 1.
  • Such a configuration is particularly effective when the temperature detection sheet 30 is attached to the surface of the portable device 1 in the second embodiment described with reference to FIGS. That is, by adopting such a configuration, the sensor control unit 31 of the temperature detection sheet 30 and the secondary side control unit 13 of the portable device 1 illustrated in FIG. There is no need to provide a wiring structure for communication between the temperature detection sheet 30 and the portable device 1. For this reason, the structure of a non-contact electric power transmission system can be simplified.
  • the temperature detection sheet 30 is attached to the surface of the housing 21 of the charger 2, but instead, it may be attached to the surface of the housing 12 of the portable device 1.
  • the secondary side control unit 13 is provided with a terminal B4 to which a voltage induced in the secondary coil L2 is applied.
  • the secondary side control part 13 monitors the amplitude of the alternating power induced by the secondary coil L2 by monitoring the electric potential of terminal B4. Further, when it is detected that the amplitude of the alternating power induced in the secondary coil L2 has changed to the amplitude A3b, it is determined that abnormal heating has occurred in the temperature detection sheet 30.
  • the secondary side control unit 13 detects abnormal heating in the temperature detection sheet 30 by changing the amplitude of the alternating power induced in the secondary coil L2 as needed through switching of the switching element FET3. This is notified to the primary side control unit 23.
  • the temperature detection sheet 30 can be attached to the surface of the housing 12 of the mobile device 1. For this reason, even if it is difficult to attach the temperature detection sheet 30 to the surface of the charger 2 due to structural restrictions, for example, the heat generation of the metal foreign matter is suppressed through the temperature detection sheet 30 provided in the portable device 1. be able to.
  • the linear thermistors SH1 to SH5 and SV1 to SV5 are arranged in a lattice pattern on the temperature detection sheet 30, but instead, for example, as shown in FIG. 18, the linear thermistors SH1 SH5 may be arranged side by side along only the y-axis direction in the figure. According to such a configuration, the number of temperature detection elements can be reduced as compared with the case where the linear thermistors are arranged in a grid pattern, so that the cost can be reduced.
  • the temperature detection unit including the linear thermistors SH1 to SH5, SV1 to SV5, the sensor control unit 31 and the like is formed in a sheet shape, but the temperature detection unit is formed in a box shape, for example.
  • the shape of the temperature detection unit may be changed as appropriate.
  • the power receiving circuit unit including the primary coil L1 is mounted on the charger, and the power transmission circuit unit including the secondary coil L2 is mounted on the portable device.
  • the mounting target of the power receiving circuit unit and the power transmitting circuit unit is not limited to these chargers and portable devices.
  • the present invention can be applied to any contactless power transmission system that receives the alternating power supplied to the primary coil via the secondary coil and supplies the received power to the load.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
  • Dc-Dc Converters (AREA)

Abstract

L'invention concerne un système de transmission d'énergie sans contact qui reçoit de l'énergie alternative fournie par une bobine primaire (L1) par l'intermédiaire d'une bobine secondaire (L2), par le fait de lier réciproquement à la bobine secondaire (L2) un flux magnétique alternatif, qui est produit par la bobine primaire (L1) en résultat de l'alimentation de l'énergie alternative à celle-ci. Cette énergie reçue est fournie à une batterie rechargeable (10). Une feuille de détection de température (30) qui comporte des thermistances formées de manière linéaire disposées en réseau est collée sur la face supérieure de la bobine primaire (L1). Dans cette feuille de détection de température (30), un chauffage anormal de celle-ci est détecté sur la base de températures détectées par l'intermédiaire des thermistances formées de manière linéaire. Lorsqu'un chauffage anormal de la feuille de détection de température (30) est détecté, l'alimentation de l'énergie alternative à la bobine primaire (L1) est arrêtée.
PCT/JP2012/063003 2011-06-21 2012-05-22 Système de transmission d'énergie sans contact WO2012176569A1 (fr)

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JP2011-137358 2011-06-21

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014135796A (ja) * 2013-01-08 2014-07-24 Ihi Corp 異物検知装置
CN105264742A (zh) * 2013-05-14 2016-01-20 株式会社村田制作所 用于非接触电力传输的供电装置及受电装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014185094A1 (fr) * 2013-05-14 2014-11-20 株式会社村田製作所 Dispositif d'alimentation en énergie et dispositif de réception d'énergie pour transmission de puissance sans contact
WO2014185095A1 (fr) * 2013-05-14 2014-11-20 株式会社村田製作所 Dispositif d'alimentation de puissance et dispositif de réception de puissance destinés à la transmission de puissance sans contact
JP6147112B2 (ja) * 2013-06-25 2017-06-14 ローム株式会社 ワイヤレス送電装置およびその制御方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6399248U (fr) * 1986-12-17 1988-06-27
JP2006214644A (ja) * 2005-01-07 2006-08-17 Matsushita Electric Ind Co Ltd 保存庫
JP2009273260A (ja) * 2008-05-08 2009-11-19 Seiko Epson Corp 無接点電力伝送装置、送電装置及びそれを用いた電子機器
JP2009273307A (ja) * 2008-05-09 2009-11-19 Seiko Epson Corp 受電装置、電子機器、無接点電力伝送システム、および送電装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05143798A (ja) * 1991-07-23 1993-06-11 Hitachi Maxell Ltd 非接触型情報媒体及びそのリーダライタ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6399248U (fr) * 1986-12-17 1988-06-27
JP2006214644A (ja) * 2005-01-07 2006-08-17 Matsushita Electric Ind Co Ltd 保存庫
JP2009273260A (ja) * 2008-05-08 2009-11-19 Seiko Epson Corp 無接点電力伝送装置、送電装置及びそれを用いた電子機器
JP2009273307A (ja) * 2008-05-09 2009-11-19 Seiko Epson Corp 受電装置、電子機器、無接点電力伝送システム、および送電装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014135796A (ja) * 2013-01-08 2014-07-24 Ihi Corp 異物検知装置
US10018516B2 (en) 2013-01-08 2018-07-10 Ihi Corporation Foreign matter detection device
CN105264742A (zh) * 2013-05-14 2016-01-20 株式会社村田制作所 用于非接触电力传输的供电装置及受电装置
CN105264742B (zh) * 2013-05-14 2018-04-10 株式会社村田制作所 用于非接触电力传输的供电装置及受电装置

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