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WO2014119035A1 - Appareil de transmission de puissance - Google Patents

Appareil de transmission de puissance Download PDF

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Publication number
WO2014119035A1
WO2014119035A1 PCT/JP2013/073604 JP2013073604W WO2014119035A1 WO 2014119035 A1 WO2014119035 A1 WO 2014119035A1 JP 2013073604 W JP2013073604 W JP 2013073604W WO 2014119035 A1 WO2014119035 A1 WO 2014119035A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
power transmission
power receiving
field coupling
receiving device
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2013/073604
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English (en)
Japanese (ja)
Inventor
真治 郷間
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to JP2014557647A priority Critical patent/JP5804303B2/ja
Publication of WO2014119035A1 publication Critical patent/WO2014119035A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H02J50/10—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
    • H02J50/05—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
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90—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
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices

Definitions

  • the present invention relates to a power transmission device, and more particularly to a power transmission device that wirelessly transmits power from a power transmission device to a power reception device.
  • a wireless power transmission method for example, as in Patent Document 1, a method of transmitting power from a primary coil on the power transmission unit side to a secondary coil on the load unit side using magnetic field coupling is generally used.
  • a method electric field coupling method
  • a coupling electrode on the power transmission unit side to a coupling electrode on the load unit side using an electrostatic field is known in which electric power is transmitted from a coupling electrode on the power transmission unit side to a coupling electrode on the load unit side using an electrostatic field.
  • the electric field coupling method uses an electrostatic field between the coupling electrodes, so that the positional accuracy of each coupling electrode can be relaxed and the coupling electrode can be downsized. Since a principle completely different from the method is adopted, if one power transmission device is adapted to any method, the circuit configuration may be complicated.
  • a main object of the present invention is to provide a power transmission device that can cope with both the magnetic field coupling method and the electric field coupling method while suppressing the complexity of the circuit configuration.
  • a power transmission device (10: reference numeral corresponding to the embodiment; the same applies hereinafter) is a voltage booster in cooperation with a low voltage side winding (L1) connected to an AC power source (12 to 14) and a low voltage side coil.
  • High-voltage side winding (L2) forming the transformer (16), one end connected to one end of the high-voltage side winding, a coil (L3) for performing magnetic field coupling type power transmission, one of the high-voltage side winding
  • the first switch (SW1) that is selectively connected to the other end of the winding, and the control that controls the connection mode of the first switch by identifying the power transmission method of the power receiving device placed on the placement surface of the housing Means (S1, S11 to S15, S37 to S41, S47) are provided.
  • the control means includes first request means (S13 to S15, S39 to S41) for requesting the first switch to select the other end of the coil when the power transmission method of the power receiving device is a magnetic field coupling method, and the power receiving device When the power transmission method is an electric field coupling method, second request means (S1, S13, S39, S47) for requesting the first switch to select the second electrode is included.
  • first request means S13 to S15, S39 to S41
  • second request means S1, S13, S39, S47
  • the first electrode and the second electrode correspond to a large electrode and a small electrode, respectively.
  • the second electrode includes a plurality of partial electrodes (E1 to E4), and further includes a second switch (24) for selectively connecting the plurality of partial electrodes to the first switch.
  • adjustment means for adjusting the transformation ratio of the step-up transformer so as to conform to the power transmission method of the power receiving device is further provided.
  • the detecting means for detecting the position of the power receiving device
  • the first moving means for moving the coil to the position detected by the detecting means when the power receiving method of the power receiving device is a magnetic field coupling method.
  • S43 the second moving means for moving the second electrode to the position detected by the detecting means when the power receiving method of the power receiving apparatus is the electric field coupling method.
  • the other end of the high-voltage side winding is connected to one of the other end of the coil and the second electrode by the first switch, and the connection mode of the first switch is the power receiving device placed on the placement surface of the housing
  • the power transmission method is identified and controlled.
  • the first electrode functions as a ground electrode when the magnetic field coupling method is selected, and functions as a part of the power transmission electrode when the electric field coupling method is selected.
  • FIG. 1 It is a block diagram which shows the structure of one Example of this invention.
  • A) is an illustration figure which shows an example of the state which looked at the power transmission apparatus shown in FIG. 1 from the top
  • (B) is an illustration figure which shows an example of the state which looked at the power transmission apparatus shown in FIG. 1 from the side.
  • FIG. 6 It is a block diagram which shows the structure of the other Example of this invention.
  • A) is an illustration figure which shows an example of the state which looked at the power transmission apparatus shown in FIG. 6 from the top
  • (B) is an illustration figure which shows an example of the state which looked at the power transmission apparatus shown in FIG. 6 from the side.
  • the power transmission system of this embodiment includes a power transmission device 10 that supports both the magnetic field coupling method and the electric field coupling method, a power receiving device 40 that supports the magnetic field coupling method, and a power reception device that supports the electric field coupling method.
  • Device 60 The power transmission device 10 includes a rectangular parallelepiped housing HS1 shown in FIGS. 2 (A) to 2 (B).
  • the one main surface and the other main surface of the housing HS1 correspond to the upper surface and the lower surface, respectively, and the power receiving devices 40 and 60 are alternatively placed on the one main surface of the housing HS1.
  • the power transmission device 10 transmits power to the power receiving device 40 by the magnetic field coupling method when the power receiving device 40 is placed, and transmits power to the power receiving device 60 by the electric field coupling method when the power receiving device 60 is placed.
  • the control circuit 14 gives a PWM signal to the drive circuit 12.
  • the drive circuit 12 converts the DC voltage supplied from the DC power source Vcc into an AC voltage according to the PWM signal supplied from the control circuit 14.
  • the frequency of the converted AC voltage matches the frequency of the PWM signal, and the level of the converted AC voltage depends on the duty ratio of the PWM signal.
  • the converted AC voltage is applied to the primary winding L1 forming the step-up transformer 16, and the AC voltage boosted to a different voltage according to the transformation ratio is excited in the secondary winding L2 forming the step-up transformer 16.
  • One end of the secondary winding L2 is connected to one end of an induction coil L3 for magnetic field coupling provided in the coil unit 20, and is further connected to a passive electrode (large electrode) E5 for electric field coupling.
  • the other end of the secondary winding L2 is connected to a common terminal T1 that forms a switch SW1.
  • Branch terminals T2 and T3 forming switch SW1 are connected to the other end of induction coil L3 and switch group 24, respectively.
  • the switch SW1 switches the other end of the secondary winding L2 to either the other end of the induction coil L3 or the switch group 24, but the one end of the secondary winding L2 is switched to the induction coil L3. May be switched to either one of the first electrode and the passive electrode E5.
  • the switch group 24 includes switches SW11 to SW14, and the electrode unit 22 includes active electrodes (small electrodes) E1 to E4.
  • the branch terminal T3 is connected to the active electrode E1 through the switch SW11, is connected to the active electrode E2 through the switch SW12, is connected to the active electrode E3 through the switch SW13, and is connected to the active electrode E4 through the switch SW14. Connected.
  • the common terminal T1 forming the switch SW1 is connected to the branch terminal T2 when the power receiving device 40 is placed on the housing HS1, and is connected to the branch terminal T3 when the power receiving device 60 is placed on the housing HS1. Is done.
  • the switches SW11 to SW14 are alternatively turned on when the power receiving device 60 is placed on the housing HS1. Specifically, the switch SW11 is turned on when the power receiving device 60 is placed near the active electrode E1, and the switch SW12 is turned on when the power receiving device 60 is placed near the active electrode E2. Further, the switch SW13 is turned on when the power receiving device 60 is placed near the active electrode E3, and the switch SW14 is turned on when the power receiving device 60 is placed near the active electrode E4.
  • the common terminal T1 forming the switch SW1 is connected to the branch terminal T3, and the switches SW11 to SW14 are turned on cyclically and alternatively. Is done.
  • the impedance on the output side of the drive circuit 12 increases, and the impedance value is the same as when the power receiving device 40 is placed and when the power receiving device 60 is placed. It is different from the time.
  • the settings of the switch SW1 and the switch group 24 are adjusted with reference to such impedance.
  • the active electrodes E1 to E4 and the passive electrode E5 are all formed in a rectangular plate shape and housed in the housing HS1.
  • the induction coil L3 is formed in a disk shape, and this is also housed in the housing HS1.
  • the areas of the main surfaces of the active electrodes E1 to E4 are common to each other and are much smaller than the area of the main surface of the passive electrode E5. Further, the area of the main surface of the passive electrode E5 is slightly smaller than the area of the main surface of the housing HS1. Further, the diameter of the circle forming the main surface of the induction coil L3 is slightly smaller than the short side of the rectangle forming the main surface of each of the active electrodes E1 to E4.
  • the areas of the active electrode and the passive electrode may be the same.
  • the switch SW1 is provided on the active electrode side (the other end of the secondary winding L2 is switched to either the other end of the induction coil L3 or the switch group 24).
  • the high electric field of the active electrode affects the induction coil L3. It is preferable because it is difficult.
  • the passive electrode E5 is provided at a substantially central position in the height direction of the housing HS1 in a posture in which one main surface faces upward and the other main surface faces downward.
  • the active electrodes E1 to E4 are provided on the upper side of the passive electrode E5 in such a posture that each one main surface faces upward and each other main surface faces downward.
  • the active electrodes E1 to E4 are arranged in a matrix.
  • the induction coil L3 is provided on the upper side of the passive electrode E5 in a posture in which one main surface faces upward and the other main surface faces downward.
  • the distance from one main surface of induction coil L3 to one main surface of housing HS1 is smaller than the distance from one main surface of each of active electrodes E1 to E4 to one main surface of housing HS1.
  • the distance from the other main surface of induction coil L3 to one main surface of housing HS1 is also smaller than the distance from one main surface of each of active electrodes E1 to E4 to one main surface of housing HS1.
  • the electrode unit 22 is moved in the left-right direction with the posture facing the.
  • the coil unit 20 is moved by the XY table 18 so that the induction coil L ⁇ b> 3 is disposed below the power receiving device 40.
  • the power receiving device 60 that employs the electric field coupling method is placed at the position shown in FIG. 4, any one of the active electrodes E1 to E4 is disposed below the power receiving device 40.
  • the electrode unit 24 is moved by the XY table 18.
  • the drive circuit 12, the control circuit 14, the step-up transformer 16, the switch SW1, and the switch group 24 are built in the power transmission module TM1.
  • the power receiving device 40 is provided with an induction coil L4 for magnetic field coupling.
  • Induction coil L4 are connected to one end and the other end of primary winding L5 that form step-down transformer 42 together with secondary winding L6. Therefore, when an AC voltage is applied to the induction coil L3 of the power transmission device 10, an AC voltage corresponding to the AC voltage is excited in the induction coil L4, and an AC voltage indicating a voltage corresponding to the step-down ratio of the step-down transformer 42 is secondary. Excited by the coil L6.
  • the rectifying / smoothing circuit 44 rectifies and smoothes the AC voltage excited by the secondary coil L6.
  • the DC-DC converter 46 adjusts the level of the DC voltage generated thereby, and supplies the DC voltage having the adjusted level to the mobile device 50 integrated with the power receiving device 40.
  • the power receiving device 60 is provided with an active electrode E6 and a passive electrode E7 for electric field coupling.
  • the active electrode E6 and the passive electrode E7 are connected to one end and the other end of the primary winding L7 that form the step-down transformer 62 together with the secondary winding L8.
  • the rectifying / smoothing circuit 64 rectifies and smoothes the AC voltage excited by the secondary coil L8.
  • the DC-DC converter 66 adjusts the level of the DC voltage generated thereby, and supplies the DC voltage having the adjusted level to the mobile device 70 integrated with the power receiving device 60.
  • the control circuit 14 executes processing according to the flowchart shown in FIG. 5 in order to selectively transmit power to the power receiving apparatuses 40 and 60.
  • step S1 the common terminal T1 of the switch SW1 is connected to the branch terminal T3 in order to set the power transmission method to the electric field coupling method.
  • step S3 the switch SW11 is turned on to validate the active electrode E1, and in step S5, the impedance on the output side of the drive circuit 12 is measured.
  • step S7 whether or not the power receiving device 40 or 60 is placed in the vicinity of the activated active electrode E1 is determined based on the measured impedance. If the determination result is NO, other active electrodes are alternatively enabled in step S9, and then the process returns to step S3. Therefore, as long as the determination result of step S7 is maintained NO, the active electrode to be activated is cyclically switched in the order of “E1” ⁇ “E2” ⁇ “E3” ⁇ “E4” ⁇ “E1” ⁇ . It is done.
  • step S7 it is determined in steps S11 to S13 whether the power transmission method employed by the power receiving device mounted on the housing HS1 is the magnetic field coupling method or the electric field coupling method. In the determination, the impedance measured in step S5 is referred to.
  • step S13 the power receiving device mounted on the housing HS1 is the power receiving device 40 adopting the magnetic field coupling method
  • the process proceeds from step S13 to step S15, and the power transmission method is set to the magnetic field coupling method.
  • the common terminal T1 of the switch SW1 is connected to the branch terminal T2.
  • step S ⁇ b> 17 the XY table 18 is controlled to move the coil unit 20 to the lower part of the power receiving device 40.
  • the coil unit 20, that is, the induction coil L ⁇ b> 3 is disposed at a position facing the induction coil L ⁇ b> 4 provided in the power receiving device 40.
  • step S19 the step-up ratio of the step-up transformer 18 is adjusted to the ratio for magnetic field coupling.
  • the step-up transformer is constituted by a winding type transformer, a plurality of midpoint taps are provided in the primary winding or the secondary winding, and a method of switching the turn ratio or a piezoelectric transformer is used for the transformer.
  • a method of adjusting the step-up ratio by changing the frequency of the applied AC voltage is conceivable.
  • step S21 the process proceeds to step S21, and the XY table 18 is controlled to place the electrode unit 22 below the power receiving device 60. Move to.
  • the electrode unit 22 is disposed at a position where the activated active electrode faces the active electrode E ⁇ b> 6 of the power receiving device 60.
  • step S23 the step-up ratio of the step-up transformer 18 is adjusted to a ratio for electric field coupling.
  • step-up transformer when the step-up transformer is constituted by a winding type transformer, a plurality of midpoint taps are provided in the primary winding or the secondary winding, and a method of switching the turn ratio or a piezoelectric transformer is used for the transformer. A method of adjusting the step-up ratio by changing the frequency of the applied AC voltage is conceivable.
  • a PWM signal is given to the drive circuit 12 to start power transmission to the power receiving device 60.
  • the primary winding L1 forming the step-up transformer 16 is connected to the drive circuit 12 that generates an AC voltage.
  • One end of the secondary winding L2 constituting the step-up transformer 16 is connected to one end of an induction coil L3 for magnetic field coupling, and further to a passive electrode E5 for electric field coupling.
  • the active electrodes E1 to E4 realize electric field coupling type power transmission in cooperation with the passive electrode E5.
  • the other end of the secondary winding L2 forming the step-up transformer 16 is connected to the induction coil L3 and the active electrodes E1 to E4 via the switch SW1.
  • the control circuit 14 identifies the power transmission method of the power receiving device mounted on the mounting surface of the housing HS1 and controls the connection mode of the switch SW1 (S1, S11 to S15).
  • step-up ratio of the step-up transformer 18 may be fixed without adjustment.
  • the other end of the secondary winding L2 is connected to either the other end of the induction coil L3 or the passive electrode E5 by the switch SW1, and the connection mode of the switch SW1 is based on the power transmission method of the power receiving device. Identify and control.
  • the passive electrode E5 functions as a ground electrode when the magnetic field coupling method is selected, and functions as a part of the power transmission electrode when the electric field coupling method is selected.
  • control circuit 14 replaces the flowchart shown in FIG. 6. Since it is the same as that of the above-mentioned Example except the point which performs the process according to the flowchart shown in FIG. 10, the overlapping description regarding the same structure is abbreviate
  • the switch group 24 is omitted, and the electrode unit 22 having a single active electrode E11 is replaced with the electrode unit 26.
  • the branch terminal T3 of the switch SW1 is directly connected to the active electrode E11.
  • the position sensor 28 has a plurality of sensor elements PS1 to PS21 provided in a matrix on the back side of the upper surface of the housing HS1.
  • the position on the housing HS1 where the power receiving device 40 or 60 is placed is detected based on the plurality of sensor elements PS1 to PS21.
  • the antenna 30 corresponds to an antenna for communicating with the mobile device 50 or 70.
  • the power transmission method adopted by the power receiving device 40 is recognized by the mobile device 50, and the power transmission method adopted by the power receiving device 60 is recognized by the mobile device 70.
  • the recognized power transmission method is transferred from the mobile device 50 or 70 to the power transmission device 10 and given to the control circuit 14 via the antenna 30 and the communication circuit 32.
  • the active electrode E11 has the same shape and size as one of the active electrodes E1 to E4 described above, with one main surface facing upward and the other.
  • the main surface is housed in the housing HS1 with the posture facing downward.
  • the active electrode E11 is disposed at the same height as the induction coil L3.
  • the power transmission module TM1 additionally includes a communication circuit 32.
  • the coil unit 20 is moved by the XY table 18 so that the induction coil L3 is disposed below the power receiving device 40 when the power receiving device 40 employing the magnetic field coupling method is placed at the position shown in FIG.
  • the electrode unit 26 is placed on the XY table so that the active electrode E11 is disposed below the power receiving device 40. 18 is moved.
  • step S31 ID authentication is executed with a mobile device existing in the vicinity.
  • step S33 it is determined whether or not the authentication is successful. If the determination result is NO, the processes in steps S31 to S33 are repeated. When the determination result is updated from NO to YES, the process proceeds to step S35, and the placement position of the authenticated power receiving apparatus is detected based on the output of the position sensor 28. When the position detection is completed, it is determined in steps S39 to S41 whether the power transmission method employed by the power receiving device mounted on the housing HS1 is the magnetic field coupling method or the electric field coupling method. In the determination, the specification information acquired from the mobile device 50 or 70 at the time of ID authentication is referred to.
  • step S41 the power receiving device mounted on the housing HS1 is the power receiving device 40 adopting the magnetic field coupling method
  • the process proceeds from step S41 to step S43, and the power transmission method is set to the magnetic field coupling method.
  • the common terminal T1 of the switch SW1 is connected to the branch terminal T2.
  • step S45 the XY table 18 is controlled to move the coil unit 20 to the lower part of the power receiving device 40.
  • the coil unit 20, that is, the induction coil L ⁇ b> 3 is disposed at a position facing the induction coil L ⁇ b> 4 provided in the power receiving device 40.
  • step S47 the step-up ratio of the step-up transformer 18 is adjusted to a ratio for magnetic field coupling.
  • step-up transformer when the step-up transformer is constituted by a winding type transformer, a plurality of midpoint taps are provided in the primary winding or the secondary winding, and a method of switching the turn ratio or a piezoelectric transformer is used for the transformer. A method of adjusting the step-up ratio by changing the frequency of the applied AC voltage is conceivable.
  • a PWM signal is given to the drive circuit 12 to start power transmission to the power receiving device 40.
  • step S49 the process proceeds from step S41 to step S49, and the power transmission method is set to the electric field coupling method.
  • the common terminal T1 of the switch SW1 is connected to the branch terminal T3.
  • step S51 the XY table 18 is controlled to move the electrode unit 26 to the lower part of the power receiving device 60.
  • the electrode unit 22, that is, the active electrode E ⁇ b> 11 is disposed at a position facing the active electrode E ⁇ b> 6 provided in the power receiving device 60.
  • step S53 the step-up ratio of the step-up transformer 18 is adjusted to a ratio for electric field coupling.
  • step-up transformer when the step-up transformer is constituted by a winding type transformer, a plurality of midpoint taps are provided in the primary winding or the secondary winding, and a method of switching the turn ratio or a piezoelectric transformer is used for the transformer. A method of adjusting the step-up ratio by changing the frequency of the applied AC voltage is conceivable.
  • step S53 When the process of step S53 is completed, a PWM signal is given to the drive circuit 12 to start power transmission to the power receiving device 60.
  • the primary winding L1 forming the step-up transformer 16 is connected to the drive circuit 12 that generates an AC voltage.
  • One end of the secondary winding L2 constituting the step-up transformer 16 is connected to one end of an induction coil L3 for magnetic field coupling, and further to a passive electrode E5 for electric field coupling.
  • the active electrode E11 cooperates with the passive electrode E5 to realize electric field coupling type power transmission.
  • the other end of the secondary winding L2 forming the step-up transformer 16 is connected to the induction coil L3 and the active electrode E11 via the switch SW1.
  • the control circuit 14 identifies the power transmission method of the power receiving device mounted on the mounting surface of the housing HS1 and controls the connection mode of the switch SW1 (S37 to S41, S47).
  • the other end of the secondary winding L2 is connected to either the other end of the induction coil L3 or the passive electrode E11 by the switch SW1, and the connection mode of the switch SW1 is based on the power transmission method of the power receiving device. Identify and control.
  • the passive electrode E5 functions as a ground electrode when the magnetic field coupling method is selected, and functions as a part of the power transmission electrode when the electric field coupling method is selected.

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

Abstract

Selon la présente invention, un bobinage primaire (L1) d'un transformateur élévateur (16) est connecté à un circuit de pilotage (12) qui génère une tension à courant alternatif (CA). Une extrémité du bobinage secondaire (L2) dudit transformateur élévateur (16) est connectée à une extrémité d'une bobine d'induction (L3) utilisée pour un couplage de champ magnétique et est également connectée à une électrode passive (E5) utilisée pour un couplage de champ électrique. Des électrodes actives (E1 jusqu'à E4) travaillent conjointement avec ladite électrode passive (E5) pour mettre en œuvre un transfert de puissance à couplage de champ électrique. L'autre extrémité du bobinage secondaire (L2) du transformateur élévateur (16) est connectée à la bobine d'induction (L3) et aux électrodes actives (E1 jusqu'à E4) par l'intermédiaire d'un commutateur (SW1). Un circuit de commande (14) identifie le schéma de transfert de puissance utilisé par un appareil de réception de puissance placé sur une surface de placement d'un boîtier et commande l'état de connexion du commutateur susmentionné (SW1).
PCT/JP2013/073604 2013-01-29 2013-09-03 Appareil de transmission de puissance Ceased WO2014119035A1 (fr)

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JP2014557647A JP5804303B2 (ja) 2013-01-29 2013-09-03 送電装置

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JP2013014879 2013-01-29
JP2013-014879 2013-01-29

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WO2014119035A1 true WO2014119035A1 (fr) 2014-08-07

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Cited By (4)

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CN104362770A (zh) * 2014-11-06 2015-02-18 重庆大学 Ecpt中的能量信号并行传输电路及其控制方法
CN107482918A (zh) * 2016-12-23 2017-12-15 中南大学 一种基于平板电容器的电力电子变压器
CN109245329A (zh) * 2018-09-06 2019-01-18 华南理工大学 一种基于矢量功率叠加的无线能量传输系统及方法
US10396599B2 (en) * 2015-02-16 2019-08-27 Lg Innotek Co., Ltd. Wireless power transmission apparatus and wireless power transmission method

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