WO2014080671A1 - Système de transmission de puissance sans contact et dispositif de réception de puissance - Google Patents

Système de transmission de puissance sans contact et dispositif de réception de puissance Download PDF

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Publication number
WO2014080671A1
WO2014080671A1 PCT/JP2013/072670 JP2013072670W WO2014080671A1 WO 2014080671 A1 WO2014080671 A1 WO 2014080671A1 JP 2013072670 W JP2013072670 W JP 2013072670W WO 2014080671 A1 WO2014080671 A1 WO 2014080671A1
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WO
WIPO (PCT)
Prior art keywords
power
power transmission
coil
receiving
unit
Prior art date
Application number
PCT/JP2013/072670
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English (en)
Japanese (ja)
Inventor
光司 荒井
Original Assignee
住友電気工業株式会社
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Filing date
Publication date
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Publication of WO2014080671A1 publication Critical patent/WO2014080671A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • 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
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • 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
    • H02M1/0048—Circuits or arrangements for reducing losses
    • H02M1/0054—Transistor switching losses
    • H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
    • 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Definitions

  • the present invention relates to a contactless power transmission system and a power receiving apparatus that transmit power in a contactless manner.
  • a contactless power transmission system including a power receiving device and a power transmission device that supplies power to the power receiving device in a contactless manner has been put into practical use.
  • the power transmission device includes a power transmission coil and a switching power source, and the switching power source supplies AC power to the power transmission coil so that power is transmitted in a contactless manner.
  • Patent Document 1 discloses a contactless power transmission system including a control unit that controls the amount of supplied power by controlling the duty ratio of a switching power supply to gradually increase.
  • the present invention has been made in view of such circumstances, and an object of the present invention is to generate an excessive voltage and current in the switching power supply and each coil even when the coupling state of the power transmission coil and the power reception coil varies. It is an object of the present invention to provide a non-contact power transmission system and a power receiving device capable of non-contact power transmission of power required on the power receiving device side.
  • a contactless power transmission system includes a power transmission coil, a power transmission device that transmits power in a contactless manner, and a power reception coil, receives power transmitted from the power transmission device in a contactless manner, and loads the load
  • the power receiving device includes a chopper circuit that transforms a voltage generated in the power receiving coil in order to control power supplied to a load.
  • a contactless power transmission system includes an acquisition unit that acquires information about power supplied to a load, and a control unit that controls the operation of the chopper circuit based on the information acquired by the acquisition unit. It is characterized by that.
  • the contactless power transmission system includes a power source that supplies alternating current to the power transmission coil, and the control unit controls power feeding by the power source based on information acquired by the acquisition unit. It is characterized by that.
  • the power receiving device includes a power receiving side acquisition unit that acquires information about power supplied to a load, and a power receiving side transmission unit that transmits information acquired by the power receiving side acquisition unit.
  • the power transmission device includes a power source that supplies alternating current to the power transmission coil, a power transmission side reception unit that receives information transmitted from the power reception device, and information received by the power transmission side reception unit, A power transmission side control unit that controls power supply by the power source, a power transmission side acquisition unit that acquires information about power supplied to the power transmission coil, and a power transmission side transmission unit that transmits information acquired by the power transmission side acquisition unit
  • the power receiving device receives the information transmitted from the power transmitting device, and the power receiving device controls the operation of the chopper circuit based on the information received by the power receiving device.
  • Side control unit The features.
  • the power receiving device has a power receiving coil, receives power transmitted in a non-contact manner, and generates power in the power receiving coil to control power supplied to the load in the power receiving device that supplies power to the load.
  • a chopper circuit for transforming the voltage is provided.
  • the voltage generated in the power receiving coil can be transformed by the chopper circuit according to the coupling state of the power transmitting coil and the power receiving coil.
  • an excessive voltage is applied to the switching power supply that supplies the power required on the power receiving device side and outputs alternating current to the power transmitting coil, or the power transmitting coil or power receiving coil is excessive. It is possible to prevent a current from flowing.
  • the present invention even when the coupling state of the power transmission coil and the power reception coil varies, excessive voltage and current are not generated in the switching power supply and each coil, and the power required on the power reception device side is contactless. Can transmit power.
  • circuit block diagram which showed one structural example of the non-contact power transmission system which concerns on this Embodiment. It is the block diagram which showed the example of 1 structure of the power transmission side control apparatus. It is the block diagram which showed one structural example of the receiving side control apparatus. It is the flowchart which showed the power transmission control procedure.
  • FIG. 1 is a circuit block diagram showing a configuration example of a contactless power transmission system according to the present embodiment.
  • the contactless power transmission system according to the present embodiment includes a power transmission device 1 that transmits the power of the AC power supply 3 in a contactless manner, and a power reception device that receives the power transmitted from the power transmission device 1 in a contactless manner and supplies the power to the load 4.
  • the apparatus 2 is provided.
  • the contactless power transmission system can be applied to a charging system of an electric vehicle (EV), for example, and the load 4 is a secondary battery mounted on the vehicle, for example.
  • EV electric vehicle
  • the power transmission device 1 includes a power transmission unit 15 that transmits power to the power reception device 2 in a contactless manner, and a switching power supply 10 that outputs an AC voltage to the power transmission unit 15.
  • Non-contact power transmission methods include, but are not limited to, an electromagnetic induction method and a magnetic resonance method.
  • the switching power supply 10 includes a converter (not shown) that converts an AC voltage output from the AC power supply 3 into a DC voltage, an inverter circuit that converts the DC voltage converted by the converter into a high-frequency AC voltage, and the like.
  • the frequency of the AC voltage is, for example, 10 kHz to 200 kHz.
  • the converter includes, for example, a diode bridge that full-wave rectifies an AC voltage, a smoothing capacitor that smoothes a full-wave rectified DC voltage, and the like.
  • the inverter circuit is, for example, a full bridge circuit having four switching elements.
  • the switching element for example, a power device such as IGBT (Insulated Gate Bipolar Transistor) or MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) is used. Each switching element is provided with a reflux diode.
  • IGBT Insulated Gate Bipolar Transistor
  • MOSFET Metal-Oxide-Semiconductor Field Effect Transistor
  • the power transmission unit 15 includes a power transmission coil L1 and a resonance capacitor C1 that constitute a resonance circuit.
  • the power transmission unit 15 is, for example, an LC series circuit of a power transmission coil L1 and a resonance capacitor C1.
  • One end of the resonance capacitor C1 is connected to one output terminal of the switching power supply 10, and the other end of the resonance capacitor C1 is connected to one end of the power transmission coil L1.
  • the other end of the power transmission coil L1 is connected to the other output terminal of the switching power supply 10.
  • the LC series circuit is an example of the configuration of the power transmission unit 15, and the power transmission unit 15 may be configured by an LC parallel circuit of a power transmission coil L1 and a resonance capacitor C1.
  • the power transmission unit 15 may be configured as a series-parallel circuit in which a resonance capacitor C1 and an LC parallel circuit (not shown) are connected in series, and the circuit configuration of the power transmission unit 15 may be a resonance circuit.
  • the types of the power transmission coil L1 include an open type and a short type, and there are shapes such as a spiral coil, a helical coil, and a loop coil, but there is no particular limitation. The same applies to a power receiving coil L2 described later.
  • the power transmission device 1 further includes a power transmission side control device 13 that controls the operation of the switching power supply 10 and a communication device 14 that transmits and receives information necessary for power transmission control. Detailed configurations of the power transmission side control device 13 and the communication device 14 will be described later.
  • the power receiving device 2 includes a power receiving unit 25 that receives the power transmitted from the power transmitting device 1 in a contactless manner, a rectifier circuit 21, and a chopper circuit 20.
  • the power reception unit 25 includes a power reception coil L2 and a resonance capacitor C2 that constitute a resonance circuit.
  • the power receiving unit 25 is, for example, an LC series circuit including a power receiving coil L2 and a resonance capacitor C2.
  • the LC series circuit is a configuration example of the power receiving unit 25, and the power receiving unit 25 may be configured by an LC parallel circuit of the power receiving coil L2 and the resonance capacitor C2.
  • the power receiving unit 25 may be configured as a series-parallel circuit in which a resonant capacitor C2 and an LC parallel circuit (not shown) are connected in series, and the circuit configuration of the power receiving unit 25 is as long as the resonant circuit is configured. There is no particular limitation.
  • the rectifier circuit 21 includes, for example, a diode bridge 21a that full-wave rectifies an AC voltage, a smoothing capacitor C3 that smoothes the full-wave rectified DC voltage, and the like.
  • One input terminal of the diode bridge 21a is connected to one end of the resonance capacitor C2 constituting the power receiving unit 25, and the other input terminal of the diode bridge 21a is connected to the other end of the power receiving coil L2 constituting the power receiving unit 25.
  • One end of the smoothing capacitor C3 is connected to the positive output terminal of the diode bridge 21a, and the other end of the smoothing capacitor C3 is connected to the negative output terminal of the diode bridge 21a.
  • the chopper circuit 20 is provided in the subsequent stage of the rectifier circuit 21.
  • One end of the switching element 22 is connected to the positive output terminal of the diode bridge 21a and the one end of the smoothing capacitor C3.
  • the switching element 22 is a power device such as an IGBT or a MOSFET.
  • the switching element 22 will be described as an IGBT.
  • the collector of the switching element 22 is connected to the positive output terminal of the diode bridge 21a and the one end of the smoothing capacitor C3.
  • the base of the switching element 22 is connected to a power receiving side control device 23 described later, and the power receiving side control device 23 performs on / off control.
  • One end of a coil L3 that stores energy is connected to the emitter of the switching element 22, and the other end of the coil L3 is connected to the negative output terminal of the diode bridge 21a and the other end of the smoothing capacitor C3.
  • the cathode of the rectifier diode D1 is connected to the one end of the coil L3.
  • the anode of the rectifier diode D1 is connected to one end of a capacitor C4 that keeps the supplied voltage constant, and the other end of the capacitor C4 is connected to the other end of the coil L3.
  • the one end and the other end of the capacitor C4 are connected to the input terminal pair of the load 4.
  • the chopper circuit 20 and the rectifier circuit 21 may be configured separately or as an integrated circuit.
  • the chopper circuit 20 may be configured by a step-up chopper circuit and a step-down chopper circuit depending on the power required for the AC power supply 3 and the load 4. . Further, the chopper circuit 20 may be constituted by a step-down chopper circuit.
  • the power receiving device 2 includes a power receiving side control device 23 that controls the operation of the chopper circuit 20 and a communication device 24 that transmits and receives information necessary to control the operations of the switching power supply 10 and the chopper circuit 20.
  • FIG. 2 is a block diagram illustrating a configuration example of the power transmission side control device 13.
  • the power transmission side control device 13 is, for example, a microcomputer including a power transmission side control unit 13a such as a CPU (Central Processing Unit) that controls the operation of each component of the power transmission side control device 13.
  • a ROM 13b, a RAM 13c, an I / F 13d, a communication I / F 13e, and a power transmission side acquisition unit 13f are connected to the power transmission side control unit 13a via a bus.
  • the ROM 13b is a nonvolatile memory such as an EEPROM (ElectricallyrErasable Programmable ROM) and stores a control program for performing switching control of the switching power supply 10.
  • EEPROM ElectricallyrErasable Programmable ROM
  • the RAM 13c is a memory such as a DRAM (Dynamic RAM), an SRAM (Static RAM), and the like.
  • the control program read from the ROM 13b when the arithmetic processing of the power transmission side control unit 13a is executed, or the arithmetic operation of the power transmission side control unit 13a. Various data generated by the processing are temporarily stored.
  • the gate of each switching element 22 constituting the switching power supply 10 is connected to the I / F 13d via a gate drive circuit.
  • the power transmission side control unit 13a controls the power output from the switching power supply 10 by giving a pulse signal to the switching element 22 via the I / F 13d.
  • the power transmission side control unit 13a controls the power output from the switching power supply 10 to the power transmission unit 15 by changing the duty ratio of the pulse signal.
  • the power transmission side acquisition unit 13f is a circuit that acquires information related to the power supplied to the power transmission coil L1.
  • the power transmission side acquisition unit 13f is, for example, a voltage detection unit that detects a voltage applied to the power transmission coil L1, a current detection unit that detects a current flowing through the power transmission coil L1, and the like.
  • a communication device 14 is connected to the communication I / F 13e.
  • the communication device 14 is a device that wirelessly transmits and receives information necessary for power transmission control.
  • the communication device 14 includes a power transmission side transmission unit 14 a that transmits information related to power transmission control to the power reception device 2 and a power transmission side reception unit 14 b that receives information transmitted from the power reception device 2.
  • Examples of the wireless communication method include a wireless LAN such as Wi-Fi, Bluetooth (registered trademark), and the like, but the method is not particularly limited. The same applies to the communication device 24 described later.
  • FIG. 3 is a block diagram showing a configuration example of the power receiving side control device 23.
  • the power receiving side control device 23 has the same configuration as the power transmission side control device 13 and is a microcomputer including a power receiving side control unit 23a such as a CPU.
  • a ROM 23b, a RAM 23c, an I / F 23d, a communication I / F 23e, and a power receiving side acquiring unit 23f are connected to the power receiving side control unit 23a via a bus.
  • the ROM 23b stores a control program for controlling the operation of the chopper circuit 20.
  • the switching element 22 of the chopper circuit 20 is connected to the I / F 23d through a gate drive circuit.
  • the power receiving side control part 23a controls the raising / lowering of the voltage supplied to the load 4 by giving a control signal to the switching element 22 via I / F23d.
  • the power receiving side acquiring unit 23 f is a circuit that acquires information relating to the power supplied to the load 4.
  • the power receiving side acquisition unit 23f is, for example, a voltage detection unit that detects a voltage applied to the load 4, a current detection unit that detects a current flowing through the load 4, and the like. Further, the power receiving side acquisition unit 23f may be provided with a configuration for acquiring voltage, current, or power information from the load 4 side. Furthermore, when the load 4 operates in the constant voltage mode or the constant current mode, the power receiving side acquisition unit 23f may be configured to read the value of the constant voltage or the constant current from the storage unit.
  • a communication device 24 is connected to the communication I / F 23e.
  • the communication device 24 is a device that wirelessly transmits and receives information necessary for power transmission control.
  • the communication device 24 includes a power reception side transmission unit 24 a that transmits information related to power transmission control to the power transmission device 1 and a power reception side reception unit 24 b that receives information transmitted from the power transmission device 1.
  • FIG. 4 is a flowchart showing a power transmission control procedure.
  • the power receiving side control unit 23a transmits the power information indicating the power required to supply power to the load 4 by the power receiving side transmitting unit 24a (step S11).
  • the power information includes, for example, at least one of a voltage, a current, and a power value at which power supply to the load 4 is required, or information having substantially the same content as these.
  • the power transmission side control unit 13a receives the power information transmitted from the power receiving device 2 at the power transmission side reception unit 14b (step S12), and controls the power input to the power transmission coil L1 based on the power information (step S13). ). For example, when the power transmission side control unit 13a determines that the power supplied to the load 4 is smaller than the target power based on the power information received in step S12 and the information received in step S21 described later. Increase the duty ratio of the pulse signal. Moreover, when the power transmission side control part 13a judges that the electric power currently supplied to the load 4 is larger than the target electric power based on the electric power information received by step S12, and the information received by step S21 mentioned later Control is performed to reduce the duty ratio of the pulse signal. At the start of power supply, the power transmission side control unit 13a controls the power input to the power transmission coil L1, assuming that the power supplied to the load 4 is zero.
  • the power transmission side control unit 13a sends the input voltage and current information related to the power input to the power transmission coil L1, that is, information such as the voltage and current actually applied to the power transmission coil L1, to the power transmission side acquisition unit 13f. (Step S14). And the power transmission side control part 13a transmits the acquired input voltage and electric current information in the power transmission side transmission part 14a (step S15).
  • the power receiving side control unit 23a receives the input voltage and current information transmitted from the power transmission device 1 at the power receiving side receiving unit 24b (step S16). And the power receiving side control part 23a acquires the output voltage and current information regarding the electric power output to the load 4, that is, the information such as the voltage and current actually applied to the load 4 by the power receiving side acquiring part 23f. (Step S17). Next, the power receiving side control unit 23a controls the step-up / step-down ratio in the chopper circuit 20 based on the received input voltage and current information and output voltage and current information (step S18).
  • the power receiving side control part 23a is the power transmission side when the electric power requested
  • the voltage and current generated in the circuit are estimated, and the step-up / step-down ratio is determined so that they are not excessive.
  • the voltage applied to the element of the switching power supply 10 on the power transmission device 1 side can be suppressed to less than about 400 V by stepping down the voltage generated in the power receiving coil L2 by the chopper circuit 20.
  • a voltage of 400 to 600 V may be applied to the elements of the switching power supply 10.
  • a voltage of 400V may be generated in the power receiving coil L2
  • the voltage applied to the element of the switching power supply 10 can be suppressed to about 200 to 300V.
  • the voltage generated in the power receiving coil L2 does not reach the voltage required for the load 4
  • the voltage may be boosted by the chopper circuit 20. The voltage required for the load 4 can be adjusted and supplied by the chopper circuit 20.
  • the power receiving side control part 23a acquires the output voltage and current information regarding the electric power output to the load 4, that is, the information such as the voltage and current actually applied to the load 4 by the power receiving side acquiring part 23f. (Step S19). And the power receiving side control part 23a transmits the acquired output voltage and electric current information in the power receiving side transmission part 24a (step S20).
  • the power transmission side control unit 13a receives the output voltage and current information transmitted from the power receiving device 2 at the power transmission side reception unit 14b (step S21). And the power transmission side control part 13a returns a process to step S13, and controls the switching power supply 10. FIG. Hereinafter, power transmission is controlled by repeatedly executing the above-described processing.
  • the switching power supply 10, the power transmission coil L1, and the power receiving coil L2 are excessively large even when the coupling state of the power transmission coil L1 and the power receiving coil L2 varies.
  • the necessary power and power can be transmitted in a non-contact manner on the power receiving device 2 side.
  • control of the switching power supply 10 and the chopper circuit 20 is outside the power transmission apparatus 1 and the power receiving apparatus 2 Control may be performed by the provided control unit, and the position of the control subject is not particularly limited.
  • charging of an electric vehicle is mainly exemplified.
  • the application target of the non-contact power transmission system is not particularly limited to this, and a non-contact power transmission system such as a factory transporter, an elevator, etc.
  • the present invention may be applied to various systems that require power transmission by contact.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention porte sur un système de transmission de puissance sans contact qui, même dans le cas où l'état de connexion d'une bobine de transmission de puissance et d'une bobine de réception de puissance change, peut transmettre de manière sans contact la puissance qui est requise au niveau du côté de réception de puissance sans tension et courant excessifs qui sont générés dans une source de puissance de commutation et la bobine de transmission. Le système de transmission de puissance sans contact comporte un dispositif de transmission de puissance (1) qui a une bobine de transmission de puissance (L1) et qui transmet de manière sans contact une puissance, et un dispositif de réception de puissance (2) qui a une bobine de réception de puissance (L2) et qui reçoit la puissance transmise de manière sans contact en provenance du dispositif de transmission (1) et fournit cette puissance à une charge (4), le dispositif de réception de puissance (2) comprenant un circuit hacheur (20) pour transformer la tension générée par la bobine de réception de puissance (L2) afin de commander la puissance fournie à la charge (4).
PCT/JP2013/072670 2012-11-22 2013-08-26 Système de transmission de puissance sans contact et dispositif de réception de puissance WO2014080671A1 (fr)

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JP2012256742 2012-11-22
JP2012-256742 2012-11-22

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WO2014080671A1 true WO2014080671A1 (fr) 2014-05-30

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Publication number Priority date Publication date Assignee Title
JP2018121410A (ja) * 2017-01-24 2018-08-02 エイブリック株式会社 給電システム、給電装置、及び給電方法
JP2020512803A (ja) * 2017-04-07 2020-04-23 オッポ広東移動通信有限公司Ｇｕａｎｇｄｏｎｇ Ｏｐｐｏ Ｍｏｂｉｌｅ Ｔｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｃｏｒｐ．， Ｌｔｄ． 被充電機器、無線充電装置、無線充電方法及び無線充電システム

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JP2009240099A (ja) * 2008-03-27 2009-10-15 Dainippon Printing Co Ltd 非接触給電装置、給電器、及び受電器
JP2011234551A (ja) * 2010-04-28 2011-11-17 Nippon Tecmo Co Ltd 非接触充電システム

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Publication number Priority date Publication date Assignee Title
JP2007336788A (ja) * 2006-06-19 2007-12-27 Dainippon Printing Co Ltd 非接触給電システム、給電装置、及び受電装置
JP2009240099A (ja) * 2008-03-27 2009-10-15 Dainippon Printing Co Ltd 非接触給電装置、給電器、及び受電器
JP2011234551A (ja) * 2010-04-28 2011-11-17 Nippon Tecmo Co Ltd 非接触充電システム

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018121410A (ja) * 2017-01-24 2018-08-02 エイブリック株式会社 給電システム、給電装置、及び給電方法
JP2020512803A (ja) * 2017-04-07 2020-04-23 オッポ広東移動通信有限公司Ｇｕａｎｇｄｏｎｇ Ｏｐｐｏ Ｍｏｂｉｌｅ Ｔｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｃｏｒｐ．， Ｌｔｄ． 被充電機器、無線充電装置、無線充電方法及び無線充電システム
US11075542B2 (en) 2017-04-07 2021-07-27 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Device to-be-charged, wireless charging apparatus, and wireless charging method

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