WO2011122348A1 - 非接触給電システム - Google Patents
非接触給電システム Download PDFInfo
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- WO2011122348A1 WO2011122348A1 PCT/JP2011/056256 JP2011056256W WO2011122348A1 WO 2011122348 A1 WO2011122348 A1 WO 2011122348A1 JP 2011056256 W JP2011056256 W JP 2011056256W WO 2011122348 A1 WO2011122348 A1 WO 2011122348A1
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- signal
- excitation
- power supply
- circuit
- power feeding
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00045—Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
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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
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
- H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
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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
- H02J50/50—Circuit arrangements or systems for wireless supply or distribution of electric power using additional energy repeaters between transmitting devices and receiving devices
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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
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
Definitions
- the present invention relates to a non-contact power supply system.
- cordless and portable devices such as mobile phones, personal computers, and mobile devices require charging, so charging is performed by plugging into an outlet using an AC adapter.
- the charging cord of the AC adapter extends to the outlet, the beauty around the outlet is damaged, and the cord is easily hooked.
- the AC adapter since the AC adapter is an accessory for mobile phones, it must be attached to each mobile phone. This raises the problem of increasing the cost of the mobile phone by the AC adapter and depleting resources such as copper, which are included in the AC adapter cord.
- Patent Document 1 methods using electromagnetic induction (for example, Patent Document 1) have been put into practical use as electric toothbrushes and electric shavers (released in 1998) and mobile phone charging devices. And in patent document 1, the apparatus authentication technique by the signal communication etc. for recognizing the apparatus to supply electric power is employ
- a method of intermittently exciting the secondary coil of the device from the primary coil of the power feeding device is also employed.
- the equipment may not have an internal power supply.
- power In order to confirm that the power supply is mounted on the device power supply surface, power must be supplied from time to time, and this is supported by intermittent oscillation or the like.
- An object of the present invention is to provide a non-contact power supply system capable of simultaneously supplying non-contact power to a plurality of devices and different devices.
- the invention according to claim 1 includes a primary coil, receives an excitation request signal for requesting excitation of the primary coil, and excites the primary coil based on the received excitation request signal. And a device including a secondary coil and a transmission circuit that transmits an excitation request signal for requesting the excitation to the primary coil of the power supply device.
- the primary coil of the power supply device is excited, secondary power is generated in the secondary coil of the device placed by electromagnetic induction, and the secondary power is supplied to the load of the device.
- the power feeding device includes a plurality of the primary coils arranged in a planar shape or a linear shape, and the power feeding module is provided for each primary coil.
- a system control unit that performs overall control of each power supply module is provided, and the system control unit receives an excitation request signal for requesting excitation transmitted from the device arranged on the power supply apparatus.
- the excitation request signal is received, a permission signal for exciting the primary coil is transmitted to one or a plurality of power supply modules.
- the switching circuit of the fourth embodiment is also an explanatory circuit diagram. It is an output waveform figure of the high frequency inverter circuit of a 4th embodiment. It is an electrical block circuit diagram of the electric power feeding module of 5th Embodiment. It is an output waveform figure of each signal of a 5th embodiment. It is an output waveform diagram of each signal for explaining another example of the fifth embodiment. It is an electric block circuit of the electric power feeding module and apparatus of 6th Embodiment. It is an output waveform figure of each signal for explaining operation of a 6th embodiment. It is an electric block circuit of the electric power feeding module and apparatus of 7th Embodiment.
- FIG. 1 shows an overall perspective view of a power feeding device 1 and a device E that is contactlessly powered from the power feeding device 1.
- a housing 2 of the power feeding device 1 has a bottom plate 3 formed in a quadrangular shape.
- Side plates 4 are formed to extend upward from the four sides of the bottom plate 3. Openings opened upward by the side plates 4 are formed by being closed by a top plate 5 made of tempered glass. And the upper surface of the top plate 5 becomes the mounting surface 6 on which the apparatus E is mounted.
- various devices E placed on the placement surface 6 of the top plate 5 are provided. Includes a plurality of power supply modules M for non-contact power supply.
- Each power supply module M provided in the housing 2 is connected to a corresponding primary coil L1.
- the number of primary coils L ⁇ b> 1 is 48 in this embodiment, and the six primary coils L ⁇ b> 1 are arranged in the X direction in parallel with the placement surface 6 of the top plate 5.
- the eight primary coils L1 are arranged so as to be arranged in the Y direction in parallel with the placement surface 6 of the top plate 5. Therefore, there are 48 power supply modules M.
- Each primary coil L1 arranged in the housing 2 is arranged and fixed at a position close enough to contact the lower surface of the top plate 5 in the housing 2.
- a power supply module M for exciting and controlling the primary coil L1 is mounted and arranged.
- Each primary coil L1 is excited or driven alone or in cooperation with another primary coil L1 to supply power to the device E placed on the placement surface 6 in a non-contact manner.
- the signal receiving antennas AT1 are arranged and fixed outside the primary coils L1 so as to surround the primary coils L1, respectively. Then, data or information is exchanged by wireless communication between the device E placed on the placement surface 6 and the corresponding power supply module M via the signal receiving antenna AT1.
- metal detection antennas AT2 are arranged and fixed inside the primary coils L1, respectively.
- the metal piece 7 arrange
- metal detection antennas AT2 are also arranged and fixed near the outside of the primary coils L1 on both outer sides in the X direction of the respective primary coils L1.
- a system control unit 8 composed of a microcomputer is mounted, which controls each power supply module M for exciting and driving each primary coil L1. Then, the data or information received by each signal receiving antenna AT1 is transmitted to the system control unit 8 via each power supply module M. In addition, a metal detection signal ST indicating whether or not the metal piece 7 is detected by each metal detection antenna AT2 is transmitted to the system control unit 8 via each power supply module M.
- the device E placed on the placement surface 6 of the power feeding device 1 has a secondary coil L2. As shown in FIG. 2, the secondary coil L ⁇ b> 2 of each device E is energized and fed through the excitation of the primary coil L ⁇ b> 1 of the power feeding device 1. The secondary coil L2 of each device E supplies the supplied secondary power to the load Z of the device E.
- a transmission / reception antenna AT3 is wound around the secondary coil L2 around the secondary coil L2 of the device E.
- the device E moves the primary coil L1 through the signal receiving antenna AT1 surrounding the primary coil L1 located immediately below the device E. Data or information is exchanged by wireless communication with the power supply module M that performs excitation drive control.
- the size of the primary coil L1 is such that when the device E is placed on the placement surface 6, the one or more primary coils L1 positioned immediately below the secondary coil L2 of the device E are equal to the secondary coil L2. It is set to be included in the area.
- the device E is provided with a device-side transmission / reception circuit 9 as a transmission circuit.
- the device side transmission / reception circuit 9 is connected to the transmission / reception antenna AT3.
- the device-side transmission / reception circuit 9 generates a device authentication signal ID indicating that the device E can be powered by the power feeding device 1 and an excitation request signal RQ requesting the power feeding device 1 to feed power.
- the device-side transmitting / receiving circuit 9 transmits the generated device authentication signal ID and excitation request signal RQ to the power feeding apparatus 1 via the transmitting / receiving antenna AT3.
- the device E may be any device that is driven by the secondary power generated in the secondary coil L2, and that can generate the device authentication signal ID and the excitation request signal RQ and transmit it to the power feeding apparatus 1. Therefore, the device E rectifies the secondary power generated in the secondary coil L2 by a rectifier circuit and drives the device E on the mounting surface 6 using the rectified DC power source, or 2 The device may be driven on the mounting surface 6 using the next power as it is as an AC power source. In addition, the device E may rectify the secondary power generated in the secondary coil L2 by a rectifier circuit, and charge a built-in charging battery (secondary battery) using the rectified DC power supply.
- a built-in charging battery secondary battery
- the device-side transmission / reception circuit 9 does not charge until the charging is completed when the charging of the secondary battery is completed.
- a function may be provided in which the excitation request signal RQ out of the transmitted device authentication signal ID and excitation request signal RQ is erased and only the device authentication signal ID is transmitted.
- the device-side transmitting / receiving circuit 9 receives power supply and is driven for a time set by the timer, and transmits a device authentication signal that has been transmitted until the time has elapsed when the set time has elapsed.
- a function of causing the excitation request signal RQ out of the ID and the excitation request signal RQ to disappear and transmitting only the device authentication signal ID may be provided.
- each power supply module M provided for each primary coil L ⁇ b> 1 includes an excitation request reception circuit 11, a device authentication reception circuit 12, a metal detection circuit 13, an excitation control circuit 14, and a high-frequency inverter circuit 15. ing.
- the excitation request receiving circuit 11 is connected to the signal receiving antenna AT1 of the power supply module M.
- the excitation request receiving circuit 11 receives a transmission signal transmitted from the device E mounted on the mounting surface 6 immediately above the power supply module M via the signal receiving antenna AT1.
- the excitation request receiving circuit 11 extracts an excitation request signal RQ that requests power supply from the received transmission signal.
- the excitation request receiving circuit 11 transmits the excitation request signal RQ to the excitation control circuit 14.
- the device authentication receiving circuit 12 is connected to the signal receiving antenna AT1 of the power supply module M.
- the device authentication receiving circuit 12 receives a transmission signal transmitted from the device E mounted on the mounting surface 6 immediately above the power supply module M via the signal receiving antenna AT1.
- the device authentication receiving circuit 12 extracts a device authentication signal ID indicating that the device E can be powered from the received transmission signal.
- the device authentication reception circuit 12 transmits the device authentication signal ID to the excitation control circuit 14.
- the metal detection circuit 13 is connected to a metal detection antenna AT2 disposed in and near the primary coil L1 of the power supply module M.
- the metal detection circuit 13 detects whether or not the metal piece 7 is placed on the placement surface 6 immediately above or in the vicinity of the power supply module M via the metal detection antenna AT2.
- the metal detection circuit 13 transmits a metal detection signal ST to the excitation control circuit 14.
- the excitation control circuit 14 receives the excitation request signal RQ from the excitation request receiving circuit 11, the device authentication signal ID from the device authentication receiving circuit 12, and the metal detection signal ST from the metal detection circuit 13.
- the excitation control circuit 14 adds the excitation request signal RQ, the device authentication signal ID, and the metal detection signal ST to the system control unit 8 with a module identification signal for identifying its own power supply module M added thereto.
- the excitation control circuit 14 transmits an excitation request signal RQ, a device authentication signal ID, and a metal detection signal ST to the system control unit 8 and waits for an enabling signal EN from the system control unit 8.
- the system control unit 8 supplies power to the primary coil L1 connected to the power supply module M when (1) the excitation request signal RQ is received and (2) the device authentication signal ID is received.
- an enabling signal EN for excitation driving is transmitted to the excitation control circuit 14.
- the excitation control circuit 14 will transmit the drive control signal CT which carries out the excitation drive of the primary coil L1 to the high frequency inverter circuit 15 for electric power feeding, if the permission signal EN from the system control part 8 is received.
- the system control unit 8 does not transmit the permission signal EN when the metal detection signal ST is received from the excitation control circuit 14 even if the above conditions (1) and (2) are satisfied. In this case, the excitation control circuit 14 does not transmit the drive control signal CT for exciting the primary coil L1 for power supply to the high frequency inverter circuit 15.
- system control unit 8 ends the transmission of the permission signal EN when at least one of the excitation request signal RQ and the device authentication signal ID from the excitation control circuit 14 is not received during the transmission of the permission signal EN. Accordingly, also in this case, the excitation control circuit 14 does not transmit the drive control signal CT to the high frequency inverter circuit 15.
- the high frequency inverter circuit 15 is connected to the primary coil L1 of the power supply module M. And the high frequency inverter circuit 15 carries out the excitation drive of the primary coil L1 based on the drive control signal CT.
- the high frequency inverter circuit 15 receives a drive control signal CT for exciting the primary coil L1 from the excitation control circuit 14, the high frequency inverter circuit 15 excites the primary coil L1 for power supply.
- the device E that can be fed by the power feeding device 1 is placed on the placement surface 6 immediately above the feeding module M, the device authentication signal ID and the excitation request signal RQ are transmitted from the device E, and the device E When there is no metal piece near the primary coil L1, the high frequency inverter circuit 15 drives the primary coil L1. That is, in this case, the primary coil L1 is excited and driven to supply secondary power to the device E by non-contact power feeding.
- the high-frequency inverter circuit 15 includes an oscillation circuit 16 and an excitation synchronization signal generation circuit 17.
- the oscillation circuit 16 is connected to the primary coil L1, and drives the primary coil L1 to be excited.
- FIG. 4 shows a circuit configuration of the oscillation circuit 16.
- the oscillation circuit 16 is a half-bridge partial resonance circuit.
- a voltage dividing circuit including a first capacitor C ⁇ b> 1 and a second capacitor C ⁇ b> 2 connected in series with each other is provided between the power supply voltage G provided in the power supply device 1 and the ground.
- a driving circuit is connected in parallel to the voltage dividing circuit.
- the drive circuit is a series circuit including a first power transistor Q1 and a second power transistor Q2 connected in series with each other.
- the first power transistor Q1 and the second power transistor Q2 are made of MOSFETs, and a flywheel is provided between the source and drain of the first power transistor Q1 and the second power transistor Q2, respectively.
- the diodes D1 and D2 are connected.
- a primary coil L1 is connected between a connection point (node N1) between the first capacitor C1 and the second capacitor C2 and a connection point (node N2) between the first power transistor Q1 and the second power transistor Q2. Connected.
- a capacitor C3 is connected in parallel to the primary coil L1.
- the first power transistor Q1 and the second power transistor Q2 are N-channel MOSFETs.
- a first AND circuit 21 is connected to a gate terminal as a control terminal of the first power transistor Q1, and a second AND circuit 22 is connected to a gate terminal as a control terminal of the second power transistor Q2.
- the first AND circuit 21 is an AND circuit having two input terminals.
- a first excitation synchronization signal Vs1 that is a logic signal is received at a first input terminal of the first AND circuit 21. More specifically, the first excitation synchronization signal Vs1 is a logic signal having a predetermined cycle Ts1. As shown in FIG. 5, in the first excitation synchronization signal Vs1, the high time ta1 is set shorter than the low time tb1. In the present embodiment, the first excitation synchronization signal Vs1 is transmitted from a signal generation circuit (not shown) provided in the system control unit 8.
- the first OR circuit 23 is a two-input terminal OR circuit.
- the first input terminal of the first OR circuit 23 receives an intermittent high signal Vst that is intermittently at a high level as shown in FIG.
- the intermittent high signal Vst rises to high after the first excitation synchronization signal Vs1 falls from high to low, rises to high, and then goes low immediately before the second first excitation synchronization signal Vs1 rises. Go down. Then, after the fifth first excitation synchronization signal Vs1 transmitted after falling low, the next intermittent high signal Vst rises high.
- the time during which the intermittent high signal Vst is at the high level is referred to as a high time tx.
- the intermittent high signal Vst is transmitted from a signal generation circuit (not shown) provided in the system control unit 8. Further, the second input terminal of the first OR circuit 23 receives an inverter control signal Vss as shown in FIG.
- the excitation synchronization signal generating circuit 17 When receiving the drive control signal CT from the excitation control circuit 14, the excitation synchronization signal generating circuit 17 generates the high level inverter control signal Vss for exciting the primary coil L1 for power supply. 1-OR circuit 23.
- the excitation synchronization signal generation circuit 17 When the drive control signal CT is not received from the excitation control circuit 14, the excitation synchronization signal generation circuit 17 does not transmit the high level inverter control signal Vss.
- the excitation synchronization signal generation circuit 17 When the device E is not mounted on the mounting surface 6 (when the excitation request signal RQ and the device authentication signal ID are not received), the excitation synchronization signal generation circuit 17 generates the high level inverter control signal Vss. Is not transmitted to the first OR circuit 23.
- the first OR circuit 23 receives the intermittent high signal Vst that is high for the high time tx every period Tst, and the first OR circuit 23 receives the logic of the intermittent high signal Vst.
- the first output signal Vrs1 having the same logical value as the value is transmitted to the first AND circuit 21 in the next stage.
- the first AND circuit 21 receives the logical value of the first excitation synchronization signal Vs1 when the intermittent high signal Vst that is high for the high time tx is transmitted every cycle Tst.
- a first on / off signal Vg1 having the same logical value as is transmitted to the gate of the first power transistor Q1.
- the first power transistor Q1 is intermittently turned on in response to the first on / off signal Vg1 (first excitation synchronization signal Vs1) only during the transmission of the intermittent high signal Vst having the high level.
- the excitation synchronization signal generation circuit 17 receives the drive control signal CT and receives the excitation synchronization signal generation circuit 17. Transmits a high level inverter control signal Vss to the first OR circuit 23.
- the first OR circuit 23 receives the high-level inverter control signal Vss, and the first OR circuit 23 outputs the first output signal Vrs1 having the same logical value as the logical value of the inverter control signal Vss.
- the first AND circuit 21 receives the first excitation synchronization signal Vs1 transmitted at a predetermined cycle Ts1 while the high-level inverter control signal Vss is transmitted.
- the first AND circuit 21 receives the first on / off signal Vg1 having the same logical value as the logical value of the first excitation synchronization signal Vs1, and transmits it to the gate of the first power transistor Q1.
- the first power transistor Q1 is turned on / off at a cycle Ts1 determined by the first excitation synchronization signal Vs1.
- the second AND circuit 22 is connected to the gate terminal of the second power transistor Q2.
- the second AND circuit 22 is an AND circuit having two input terminals.
- a second excitation synchronization signal Vs2 that is a logic signal is received at the first input terminal of the second AND circuit 22.
- the first excitation synchronization signal Vs1 when the first excitation synchronization signal Vs1 is high, the second excitation synchronization signal Vs2 is low, and when the first excitation synchronization signal Vs1 is low, the second excitation synchronization signal Vs2 is high.
- the high times ta1 and ta2 are set shorter than the low times tb1 and tb2. Therefore, the first excitation synchronization signal Vs1 falls from high to low, the second excitation synchronization signal Vs2 rises from low to high, and the second excitation synchronization signal Vs2 falls from high to low.
- each of the first and second excitation synchronization signals Vs1 and Vs2 is set to the dead time td at which both become low level. By providing this dead time td, soft switching between the first power transistor Q1 and the second power transistor Q2 becomes possible.
- the second excitation synchronization signal Vs2 is transmitted from a signal generation circuit (not shown) provided in the system control unit 8. Further, the second output signal Vrs ⁇ b> 2 from the second OR circuit 24 is received at the second input terminal of the second AND circuit 22.
- the second OR circuit 24 is an OR circuit having two input terminals.
- the intermittent high signal Vst is received at the first input terminal of the second OR circuit 24.
- the inverter control signal Vss is received from the excitation synchronization signal generation circuit 17 at the second input terminal of the second OR circuit 24.
- the second OR circuit 24 has the excitation synchronization signal generation circuit 17 receiving the drive control signal CT from the excitation control circuit 14 (when the above conditions (1) and (2) are satisfied). A high level inverter control signal Vss is received.
- the second OR circuit 24 is high when the excitation synchronization signal generation circuit 17 does not receive the drive control signal CT from the excitation control circuit 14 (when the above conditions (1) and (2) are not satisfied). -Level inverter control signal Vss is not received.
- the first OR terminal 24 receives the intermittent high signal Vst that is high for the high time tx every period Tst.
- the second OR circuit 24 receives the logical value of the intermittent high signal Vst.
- the second output signal Vrs2 having the same logical value as is transmitted to the second AND circuit 22 in the next stage.
- the second AND circuit 22 receives the intermittent high signal Vst that is at the high level for the high time tx every cycle Tst, as shown in FIG. 6, the logical value of the second excitation synchronization signal Vs2 is calculated.
- a second on / off signal Vg2 having the same logical value is transmitted to the gate of the second power transistor Q2.
- the second power transistor Q2 intermittently responds to the second on / off signal Vg2 (second excitation synchronization signal Vs2) during the high time tx when the intermittent high signal Vst is at the high level at intervals of the period Tst. Turn on.
- the first power transistor Q1 of the high-frequency inverter circuit 15 is The second power transistor Q2 is turned on / off in response to the second excitation synchronization signal Vs2 determined by the intermittent high signal Vst.
- the first power transistor Q1 and the second power transistor Q2 are alternately and intermittently. Turn on and off.
- the primary coil L1 is intermittently driven in an alternating manner by alternately turning on and off the first power transistor Q1 and the second power transistor Q2.
- each primary coil L ⁇ b> 1 of the power feeding device 1 is not continuously excited but is intermittently driven.
- the excitation synchronization signal generating circuit 17 sends the high-level inverter control signal Vss to the second OR circuit 24.
- the second OR circuit 24 receives the high-level inverter control signal Vss, and the second OR circuit 24 transmits the high-level second output signal Vrs2 to the second AND circuit 22 in the next stage. To do.
- the second AND circuit 22 has the same logic as the logic value of the second excitation synchronization signal Vs2 having a predetermined period Ts2, as shown in FIG. A second on / off signal Vg2 having a value is transmitted to the gate of the second power transistor Q2. As a result, the second power transistor Q2 is turned on / off at a cycle determined by the second excitation synchronization signal Vs2.
- the first power transistor Q1 is turned on while the high-level inverter control signal Vss is being transmitted.
- the second power transistor Q2 is turned on / off in response to the second excitation synchronization signal Vs2.
- the waveforms of the first and second excitation synchronization signals Vs1 and Vs2 having the same logical value as the logical values of the first and second on / off signals Vg1 and Vg2. Have an inverted relationship with each other. Therefore, the first power transistor Q1 and the second power transistor Q2 of the high-frequency inverter circuit 15 are alternately turned on and off while the above conditions (1) and (2) are satisfied.
- Excitation voltages VD1 and VD2 are generated between the source and drain of the first power transistor Q1 and the second power transistor Q2, respectively. Therefore, when the device E is placed on the placement surface 6 for power feeding, the primary coil L1 at the position where the device E of the power feeding device 1 is placed is continuously excited and driven.
- the system control unit 8 that performs overall control of each power supply module M includes a microcomputer and is electrically connected to all the power supply modules M.
- the system control unit 8 receives from the excitation control circuit 14 of each power supply module M an excitation request signal RQ to which its own module identification signal is added, a device authentication signal ID, and a metal detection signal ST.
- the system control unit 8 can supply power based on the excitation request signal RQ from the excitation control circuit 14 of the power supply module M and the device authentication signal ID, and the device E requesting power supply receives the power supply module M. It is determined whether it is placed immediately above.
- the system control unit 8 When the system control unit 8 receives the excitation request signal RQ and the device authentication signal ID from the excitation control circuit 14 of the power supply module M, the system control unit 8 sends the permission signal EN to the excitation control circuit 14 of the power supply module M. Send. That is, the system control unit 8 determines that the device E that can supply power and requests power supply has been placed immediately above the power supply module M, and sends it to the excitation control circuit 14 of the power supply module M. In response to this, an enable signal EN is transmitted.
- two or more Primary coil L1 may be located directly below the device E.
- each power supply module M corresponding to each primary coil L1 located immediately below the device E individually receives the excitation request signal RQ and device authentication signal ID of the device E as shown in FIG. To the system control unit 8.
- the system control unit 8 determines whether the device E placed immediately above each power supply module M is the same device. Determine if.
- the system control unit 8 can discriminate by the aggregate of adjacent power supply modules M without being separated based on the module identification signal and the device authentication signal ID of each module M.
- the system control unit 8 simultaneously transmits the permission signal EN to each power supply module M that is located immediately below the mounted device E and has transmitted the excitation request signal RQ and the device authentication signal ID.
- the plurality of power supply modules M cooperate to excite the plurality of primary coils L1, thereby supplying power to one device E having a large size.
- the plurality of power supply modules M cooperate to excite the plurality of primary coils L1, thereby supplying power to one device E having a large size.
- the power supply module M corresponding to the primary coil L1 located directly below each device E receives the excitation request signal RQ and device authentication signal ID for the corresponding device, and receives the received excitation request signal RQ and device authentication.
- the signal ID is transmitted to the system control unit 8.
- the system control unit 8 Based on the excitation request signal RQ to which the module identification signal from each power supply module M is added and the device authentication signal ID, the system control unit 8 does not have one device E mounted immediately above each power supply module M. It is determined whether two or more are mounted.
- the system control unit 8 can determine based on the module identification signal and device authentication signal ID of each power supply module M that each device E is at a position separated from each other.
- the system control unit 8 transmits a permission signal EN to each power supply module M that is located immediately below the two or more devices E that have been placed and has transmitted the excitation request signal RQ and the device authentication signal ID. To do. Therefore, the power supply module M corresponding to each device E excites the primary coil L1 and supplies power to each device E.
- the system control unit 8 determines that the metal piece 7 is placed immediately above the power supply module M based on the metal detection signal ST from the excitation control circuit 14 of the power supply module M.
- the system control unit 8 receives the metal detection signal ST from the excitation control circuit 14 of the power supply module M, the system control unit 8 does not transmit the permission signal EN to the excitation control circuit 14 of the power supply module M. That is, the system control unit 8 determines that the metal piece 7 is placed immediately above the power supply module M, and does not transmit the permission signal EN to the excitation control circuit 14 of the power supply module M.
- the system control unit 8 does not transmit the permission signal EN.
- a large-sized device E that feeds power using the two or more primary coils L1 is placed, and metal detection is performed from at least one of the power feeding modules M provided corresponding to each primary coil L1.
- the signal ST may be transmitted to the system control unit 8 in some cases. In this case, the system control unit 8 does not transmit the permission signal EN to all the corresponding power supply modules M. Therefore, the mounted large equipment E is not supplied with power.
- the permission signal EN is sent to the power supply module M that supplies power to the device E in which the metal piece 7 is detected by determining each of the two or more devices E. Not sent. That is, only the device E with the metal piece 7 sandwiched is stopped from excitation, and the device E without the metal piece 7 continues to be fed.
- the system control unit 8 includes a signal generation circuit (not shown) that generates the first excitation synchronization signal Vs1, the second excitation synchronization signal Vs2, and the intermittent high signal Vst.
- the system control unit 8 drives the signal generation circuit to generate the first excitation synchronization signal Vs1, the second excitation synchronization signal Vs2, and the intermittent high signal Vst. Generate. Then, the system control unit 8 transmits the first excitation synchronization signal Vs1, the second excitation synchronization signal Vs2, and the intermittent high signal Vst to the high frequency inverter circuits 15 of all the power supply modules M.
- the high-frequency inverter circuits 15 of all the power supply modules M have the first excitation synchronization signal Vs1 and the second excitation synchronization signal Vs2. And the intermittent high signal Vst is continuously received. For this reason, each primary coil L1 of the power feeding device 1 is not continuously excited, but is intermittently driven.
- the operation of the power feeding apparatus 1 configured as described above will be described according to a flowchart showing the processing operation of the system control unit 8 composed of the microcomputer shown in FIG.
- a power switch (not shown) is turned on and power is supplied to the power feeding device 1 (YES in step S1-1)
- the primary coil L1 is intermittently driven. That is, the system control unit 8 includes the first excitation synchronization signal Vs1, the second excitation synchronization signal Vs2, and the intermittent operation for intermittently driving the primary coil L1 to the high frequency inverter circuits 15 of all the power supply modules M.
- a high signal Vst is transmitted (step S1-2).
- the system control unit 8 waits for the excitation request signal RQ and the device authentication signal ID from each power supply module M (step S1-3).
- the system control unit 8 repeats steps S1-2 and S1-3 until the excitation request signal RQ and the device authentication signal ID from the power supply module M are received, and intermittently excites each primary coil L1. continue. That is, the power supply module M enters a standby state.
- the device E obtains a small amount of secondary power supply by the intermittent excitation of the primary coil L1 of the power supply device 1 to operate the device-side transmission / reception circuit 9.
- the device E uses the device authentication signal ID and the excitation request signal RQ of the device E generated by the device-side transmission / reception circuit 9 as a signal of the power supply module M located immediately below the device E via the transmission / reception antenna AT3. Transmission is performed toward the reception antenna AT1.
- the signal receiving antenna AT1 receives the device authentication signal ID and the excitation request signal RQ from the device E.
- An excitation request signal RQ is extracted by the excitation request receiving circuit 11, and a device authentication signal ID is extracted by the device authentication receiving circuit 12.
- the excitation request signal RQ and the device authentication signal ID are received by the system control unit 8 via the excitation control circuit 14.
- the system control unit 8 Based on the excitation request signal RQ and the device authentication signal ID from the excitation control circuit 14, the system control unit 8 is capable of supplying power immediately above the power supply module M and on which the device E requesting power supply is placed. And the permission signal EN is transmitted to the excitation control circuit 14 of the power supply module M (step S1-4).
- the excitation control circuit 14 transmits a drive control signal CT to the high frequency inverter circuit 15 (excitation synchronization signal generation circuit 17) in response to the permission signal EN.
- the inverter control signal Vss is transmitted from the excitation synchronization signal generation circuit 17, and continuous excitation is started for the primary coil L1 at the position where the device E is placed.
- the system control unit 8 determines whether or not the excitation request signal RQ has disappeared and determines whether or not the metal detection signal ST has been transmitted (steps S1-5 and S1-6). If the excitation request signal RQ does not disappear (NO in step S1-5) and the metal detection signal ST is not transmitted (NO in step S1-6), the system control unit 8 returns to step S1-3 and returns to the primary coil. Continuous excitation is continued for L1 (steps S1-3 to S1-6). That is, power supply to the device E is continued. Therefore, the device E receives non-contact power supply from the power supply device 1 and drives the load Z with the supplied power.
- step S1-5 when the device E is removed from the mounting surface 6 or when the excitation request signal RQ disappears, the system control unit 8 determines that the excitation request signal RQ has disappeared. (YES in step S1-5), the process proceeds to step S1-7 to drive a notification lamp or a buzzer (not shown) for a certain period of time to notify the user of that fact and to notify the power supply module M of the permission signal EN Is stopped and the process proceeds to step S1-3.
- step S1-3 the system control unit 8 waits for a new excitation request signal RQ and device authentication signal ID from the power supply module M.
- the system control unit 8 repeats steps S1-2 and S1-3 until the excitation request signal RQ and the device authentication signal ID from the power supply module M are received, and the primary coil L1 is intermittently excited. Continue.
- the primary coil L1 is in an intermittent excitation state when the system control unit 8 enters the standby mode, and thus standby power can be suppressed.
- step S1-6 when the metal detection signal ST is received from the power supply module M, the system control unit 8 responds to the transmission of the metal detection signal ST from the power supply module M (step S1- 6), the process proceeds to step S1-7.
- the system control unit 8 drives a notification lamp or a notification buzzer (not shown) for a certain period of time to notify the user of that fact, and sends the permission signal EN to the power supply module M.
- the transmission is stopped and the process returns to step S1-3.
- the system control unit 8 continues to drive the notification lamp or the notification buzzer by repeating the processes of steps S1-3 to S1-7.
- the processing time is longer than the processing time of continuous excitation in step S1-4 and the output stop time of the permission signal EN in step S1-7. Therefore, the primary coil L1 of the power supply module M is intermittently excited.
- the system control unit 8 can continue the intermittent excitation to prevent the metal piece 7 from being inductively heated.
- a plurality of primary coils L1 are arranged in the same surface on the lower side of the top plate 5 having the mounting surface 6 in the power feeding device 1, and are provided for each primary coil L1.
- Each power supply module M that is excited and driven and a system control unit 8 that controls each power supply module M are provided.
- Each power supply module M receives the device authentication signal ID and the excitation request signal RQ from the device E via the signal receiving antenna AT1 provided at a position adjacent to the corresponding primary coil L1, and receives the device authentication signal.
- the ID and excitation request signal RQ are transmitted to the system control unit 8.
- the system control unit 8 transmits the permission signal EN that permits continuous excitation of the primary coil L1 to the power supply module M that has transmitted the device authentication signal ID and the excitation request signal RQ among the power supply modules M. .
- each primary coil L1 is excited with a waveform having the same phase.
- the device E when a device E such as a mobile phone that operates on a secondary battery is placed on the placement surface 6, the device E is charged little by little with this minute secondary power. That is, there is a case where the secondary battery is not charged at the time of placement, and the device-side transmission / reception circuit 9 of the device E operating with the secondary battery does not operate. In this case, the device-side transmission / reception circuit 9 of the device E can enable generation and transmission of the device authentication signal ID and the excitation request signal RQ by charging the secondary battery little by little.
- the metal detection antenna AT2 that detects the metal piece 7 placed on the placement surface 6 of the power feeding device 1 is provided, and when the metal detection antenna AT2 detects the metal piece 7, the primary Power supply to the device E is stopped by switching the excitation of the coil L1 from continuous excitation to intermittent excitation. As a result, the metal piece 7 placed on the placement surface 6 can be prevented from being induction-heated.
- the voltage between the source and drain of the first power transistor Q1 and the second power transistor Q2 can be turned on after becoming zero volts, the turn-on loss of the first power transistor Q1 and the second power transistor Q2 is reduced. It can be lost. Further, since the harmonic component of the current waveform flowing in the primary coil L1 at the time of turn-on and turn-off can be reduced, noise can also be reduced.
- each primary coil L1 is such that when the device E is placed on the placement surface 6, the primary coil L1 located immediately below the secondary coil L2 of the device E is equal to the secondary coil L2. It was set so that one or more were included in the area.
- the device E to be fed can be excited with the minimum necessary primary coil L1 group corresponding to the region of the secondary coil L2 of the device E, and can be driven with high efficiency.
- the first OR circuit 23 and the second OR circuit 24 receive the same inverter control signal Vss and intermittent high signal Vst, respectively. Therefore, since the first output signal Vrs1 of the first OR circuit 23 and the second output signal Vrs2 of the second OR circuit 24 have the same output waveform, one of the first OR circuit 23 and the second OR circuit 24 is It may be omitted. Then, for example, the remaining first OR circuit 23 may transmit the first output signal Vrs1 to the first AND circuit 21 and transmit the second output signal Vrs2 to the second AND circuit 22.
- the circuit scale of the high-frequency inverter circuit 15 can be reduced.
- the device authentication signal ID and the excitation request signal RQ are received from the device E, but only the device authentication signal ID is received, or only the excitation request signal RQ is received. Only one of the device authentication signal ID and the excitation request signal RQ may be received. As a result, a low-cost configuration with reduced parts can be achieved.
- the radio frequency of the excitation request signal RQ from the device E has not been described in detail.
- a radio signal having a frequency different from the excitation frequency of the primary coil L1 is generated by using the power source of the device E or the auxiliary power source on the device E side obtained by electromagnetic induction from the primary coil L1, and this difference is generated.
- a radio signal having a frequency is modulated by the excitation request signal and transmitted to the power supply module M immediately below the device E. Then, the modulated radio signal may be detected by the signal receiving antenna AT1, and the excitation request receiving circuit 11 may demodulate the excitation signal from the detected radio signal.
- the system control unit 8 generates and transmits the first excitation synchronization signal Vs1, the second excitation synchronization signal Vs2, and the intermittent high signal Vst, but the excitation control circuit 14 or the high-frequency inverter circuit 15
- the first excitation synchronization signal Vs1, the second excitation synchronization signal Vs2, and the intermittent high signal Vst may be generated.
- the size of the primary coil L1 is such that one or more primary coils L1 positioned immediately below the secondary coil L2 of the device E when the device E is placed on the placement surface 6 are two. It was set to be included in the area of the next coil L2.
- the present invention is not limited to this, and one region of the primary coil L1 directly below may be larger than the region of the single secondary coil L2.
- efficiency is lowered, in short, it is only necessary to generate power supply to the secondary coil L2 by performing electromagnetic induction between the primary coil L1 and the secondary coil L2.
- the power feeding device 1 intermittently excites all the primary coils L1 in the standby state, whereas in the present embodiment, the object 30 including the device E is placed on the placement surface 6. For the first time, all or a part of the primary coil L1 is intermittently excited.
- an object detection sensor 31 is provided on the top surface (mounting surface 6) of the top plate 5 of the power supply apparatus 1 and at the position where each of the metal detection antennas AT2 is disposed. Therefore, each object detection sensor 31 is uniformly arranged on the entire mounting surface 6.
- each object detection sensor 31 is a light reflection type sensor composed of a light emitting element and a light receiving element.
- the object 30 see FIG. 12
- the light emitted from the light emitting element is reflected on the object 30 and the reflected light is received by the photoreceiver.
- 30 is detected and an object detection signal MT is transmitted. Therefore, when the object 30 is not disposed immediately above each object detection sensor 31, the light emitted from the light emitting element is not reflected light, and the light receiving element cannot receive the light and does not transmit the object detection signal MT.
- the object detection sensor 31 is a light reflection type sensor composed of a light emitting element and a light receiving element.
- the object detection sensor 31 may be embodied by a pressure detection element that detects the weight of the object 30.
- the object detection sensor does not limit the material that can be detected, as long as it can detect the object 30 of any material such as metal, plastic, and wood.
- Each object detection sensor 31 is connected to a power supply module M to which a metal detection antenna AT2 disposed opposite to the object detection sensor 31 is connected. Each object detection sensor 31 transmits an object detection signal MT to the power supply module M when detecting the object 30.
- FIG. 12 is an electric block circuit diagram showing an electrical configuration of the power feeding device 1 of the present embodiment.
- each power supply module M includes an object detection circuit 32 in addition to the excitation request reception circuit 11, the device authentication reception circuit 12, the metal detection circuit 13, the excitation control circuit 14, and the high frequency inverter circuit 15. .
- the object detection circuit 32 is connected to the object detection sensor 31 and receives the object detection signal MT transmitted from the corresponding object detection sensor 31. Then, the object detection circuit 32 transmits the object detection signal MT to the excitation control circuit 14 assuming that the object 30 is placed on the placement surface 6.
- the excitation control circuit 14 receives from the object detection circuit 32.
- the object detection signal MT is added with a module identification signal for identifying its own power supply module M and transmitted to the system control unit 8.
- the system control unit 8 When receiving only the object detection signal MT from the excitation control circuit 14, the system control unit 8 sends the first excitation synchronization signal Vs 1 and the second excitation synchronization to the oscillation circuit 16 of the high frequency inverter circuit 15 of the power supply module M.
- the signal Vs2 and the intermittent high signal Vst are transmitted.
- the power feeding device 1 intermittently excites only the primary coil L1 at the position where the object 30 is placed, and pauses without exciting the primary coil L1 at other positions. ing.
- the power feeding device 1 can greatly reduce power consumption in the standby state.
- the system controller 8 selects the primary coil L1 to be controlled based on the presence or absence of the object detection signal MT from the object detection sensor 31, and the excitation control of the selected primary coil L1. It is characterized in that The other embodiments are basically the same as the first embodiment. Therefore, the characteristic part of this embodiment is demonstrated in detail, and the common part between this embodiment and 1st Embodiment is abbreviate
- step S2-1 when a power switch (not shown) is turned on and power is supplied to the power feeding apparatus 1 (YES in step S2-1), the system control unit 8 performs first excitation synchronization with the high frequency inverter circuit 15 of each power feeding module M. Without transmitting the signal Vs1, the second excitation synchronization signal Vs2, and the intermittent high signal Vst (step S2-2), the control unit waits for the object detection signal MT from each power supply module M (step S2-3). That is, the system control unit 8 waits for the object detection signal MT in a state where all the primary coils L1 are not intermittently excited.
- the object detection sensor 31 connected to the plurality of power supply modules M located immediately below the placed object 30 detects the object 30. Then, the object detection signal MT is transmitted.
- step S2 When the system controller 8 receives the object detection signal MT from each power supply module M (YES in step S2-3), the primary coil L1 connected to the power supply module M that has transmitted the object detection signal MT is intermittently excited. Drive (step S2-4).
- the system control unit 8 performs the first excitation synchronization for intermittently driving the primary coil L1 with respect to the high-frequency inverter circuits 15 of the plurality of power supply modules M located immediately below the placed object 30.
- a signal Vs1, a second excitation synchronization signal Vs2, and an intermittent high signal Vst are transmitted.
- Vs1 a signal generated by the system control unit 8
- Vs1 a second excitation synchronization signal
- Vst an intermittent high signal
- the system control unit 8 waits for the excitation request signal RQ and the device authentication signal ID from each power supply module M (step S2-5), and receives the excitation request signal RQ and the device authentication signal ID from the power supply module M. Steps S2-3 to S2-5 are repeated until That is, excitation is intermittently continued for each primary coil L1 located immediately below the placed object 30. Accordingly, when the object 30 is removed during this time (NO in step S2-3), the system control unit 8 proceeds to step S2-2, and the first excitation synchronization signal Vs1, the second excitation synchronization signal Vs2, and the intermittent The transmission of the high signal Vst is stopped, and the intermittent excitation of the primary coil L1 is stopped.
- the object 30, that is, the device E is connected to the signal receiving antenna AT1 of the power supply module M in which the device authentication signal ID and the excitation request signal RQ are located immediately below the device E. Send towards.
- the excitation control circuit 14 of the power supply module M transmits the excitation request signal RQ from the excitation request receiving circuit 11 and the device authentication signal ID from the device authentication receiving circuit 12 to the system control unit 8.
- the excitation request signal RQ and the device authentication signal ID are received from the excitation control circuit 14 (YES in step S2-5), the device E that can supply power and requests power supply directly above the power supply module M.
- the system control unit 8 transmits the permission signal EN to the excitation control circuit 14 of the power supply module M (step S2-6).
- the excitation control circuit 14 transmits a drive control signal CT to the high frequency inverter circuit 15 (excitation synchronization signal generation circuit 17) in response to the permission signal EN.
- the system control unit 8 starts continuous excitation for the primary coil L1 at the position where the device E is placed.
- the system control unit 8 determines whether the excitation request signal RQ has disappeared and whether the metal detection signal ST has been transmitted (steps S2-7, S2-8). If the excitation request signal RQ does not disappear (NO in step S2-7) and the metal detection signal ST is not transmitted (NO in step S2-7), the system control unit 8 returns to step S2-5 and returns to the primary coil. Continuous excitation is continued for L1 (steps S2-5 to S2-8). That is, power supply to the device E is continued. Accordingly, the device E receives non-contact power supply from the power supply device 1 and the load Z is driven by the supplied power.
- step S2-7 when the device E is removed from the mounting surface 6 or when the excitation request signal RQ disappears, the system control unit 8 determines that the excitation request signal RQ has disappeared. (YES in step S2-5), the process proceeds to step S2-9 to drive a notification lamp or buzzer (not shown) for a certain period of time to notify the user of that fact and to notify the power supply module M of the permission signal EN The transmission is stopped and the process proceeds to step S2-5.
- step S2-5 the new excitation request signal RQ and the device authentication signal ID are not received from the power supply module M (NO in step S2-5).
- the system control unit 8 proceeds to step S2-2 and transmits it to the high frequency inverter circuit 15 of the power supply module M.
- the intermittent excitation of the primary coil L1 is stopped. That is, the system control unit 8 stops the excitation of the primary coil L1 that has been driven to be excited because the device E has been supplied with power up to now.
- step S2-8 When the metal detection signal ST is received from the power supply module M in step S2-8, the system control unit 8 responds to the transmission of the metal detection signal ST from the power supply module M (in step S6). YES), the process proceeds to step S2-9.
- the system control unit 8 informs the user by driving a notification lamp or a notification buzzer (not shown) for a certain period of time, and permits the power supply module M.
- the transmission of the signal EN is stopped, and the process returns to step S2-5.
- the system control unit 8 repeats the processing of steps S2-5 to S2-9 and continues to drive the notification lamp or the buzzer.
- the processing time of continuous excitation in step S2-6 is much shorter than the transmission stop time of the permission signal EN in step S2-9.
- the controller 8 intermittently excites the primary coil L1 of the power supply module M.
- each of the first excitation synchronization signal Vs1 and the second excitation synchronization signal Vs2 is one type.
- the first excitation synchronization signal Vs1 and the second excitation synchronization signal Vs2 are two types of low frequency and high frequency first excitation synchronization signals Vs1a and Vs1b having different frequencies, and low frequency and high frequency.
- the second excitation synchronization signals Vs2a and Vs2b are used, and an excitation synchronization signal having a different frequency is transmitted according to the device E to be mounted or depending on the state of the device. Yes.
- FIG. 14 shows an electric circuit showing the high-frequency inverter circuit 15 of each power supply module M.
- the first input terminal of the first AND circuit 21 is connected to the first switching circuit 41.
- the first input terminal of the first AND circuit 21 receives either the low-frequency first excitation synchronization signal Vs1a or the high-frequency first excitation synchronization signal Vs1b from the first switching circuit 41.
- the second input terminal of the first AND circuit 21 is connected to the first OR circuit 23.
- the first output signal Vrs ⁇ b> 1 is received from the first OR circuit 23 at the second input terminal of the first AND circuit 21.
- the first switching circuit 41 includes a first transmission gate 41a that receives the low-frequency first excitation synchronization signal Vs1a and a second transmission gate that receives the high-frequency first excitation synchronization signal Vs1b. 41b.
- the waveform of the low-frequency first excitation synchronization signal Vs1a is the same waveform as the first excitation synchronization signal Vs1 of the first embodiment, as shown in FIG. That is, the period Ts1a, the high time ta1a, and the low time tb1a of the first excitation synchronization signal Vs1a for low frequency are set to be the same as the period Ts1, the high time ta1, and the low time tb1 of the first excitation synchronization signal Vs1. ing.
- the low-frequency first excitation synchronization signal Vs1a is transmitted from a signal generation circuit (not shown) provided in the system control unit 8.
- the cycle Ts1b of the high frequency first excitation synchronization signal Vs1b is set to one half of the cycle Ts1a of the low frequency first excitation synchronization signal Vs1a. Further, the high time ta1b and the low time tb1b of the high frequency first excitation synchronization signal Vs1b are set to one half of the high time ta1a and the low time tb1a of the low frequency first excitation synchronization signal Vs1a, respectively. Has been.
- the high-frequency first excitation synchronization signal Vs1b is transmitted from a signal generation circuit (not shown) provided in the system control unit 8.
- the first transmission gate 41a receives the first excitation synchronization signal Vs1a for low frequency, and the first transmission gate 41a includes an N channel MOS transistor Q3 and a P channel MOS transistor Q4 connected in parallel with each other.
- the first switching signal SW1 is received at the gate terminal of the N-channel MOS transistor Q3, and the first switching signal SW1 is received at the gate terminal of the P-channel MOS transistor Q4 via the first inverter circuit 43. Therefore, when the first transmission gate 41 a receives the high-level first switching signal SW 1, the first transmission gate 41 a transmits the low-frequency first excitation synchronization signal Vs 1 a to the first AND circuit 21.
- the first switching signal SW1 is transmitted from a signal generation circuit (not shown) provided in the system control unit 8.
- the high frequency first excitation synchronization signal Vs1b is transmitted to the second transmission gate 41b
- the second transmission gate 41b includes an N channel MOS transistor Q5 and a P channel MOS transistor Q6 connected in parallel to each other.
- the first switching signal SW1 is received at the gate terminal of the N-channel MOS transistor Q5 via the first inverter circuit 43, and the first switching signal SW1 is received at the gate terminal of the P-channel MOS transistor Q6. . Therefore, when the low-level first switching signal SW1 is received by the second transmission gate 41b, the second transmission gate 41b transmits the high-frequency first excitation synchronization signal Vs1b to the first AND circuit 21.
- the first switching circuit 41 when the first switching circuit 41 receives the high-level first switching signal SW 1, the first switching circuit 41 transmits the low-frequency first excitation synchronization signal Vs 1 a to the first AND circuit 21.
- the first switching circuit 41 receives the low-level first switching signal SW ⁇ b> 1, the first switching circuit 41 transmits the high-frequency first excitation synchronization signal Vs ⁇ b> 1 b to the first AND circuit 21.
- the first input terminal of the second AND circuit 22 is connected to the second switching circuit 42.
- the first input terminal of the second AND circuit 22 receives either the low-frequency second excitation synchronization signal Vs2a or the high-frequency second excitation synchronization signal Vs2b from the second switching circuit 42.
- the second OR circuit 24 is connected to the second input terminal of the second AND circuit 22.
- the second output signal Vrs ⁇ b> 2 is received from the second OR circuit 24 at the second input terminal of the second AND circuit 22.
- the second switching circuit 42 includes a third transmission gate 42a and a fourth transmission gate 42b.
- the third transmission gate 42a receives the low-frequency second excitation synchronization signal Vs2a
- the fourth transmission gate 42b receives the high-frequency second excitation synchronization signal Vs2b.
- the waveform of the low-frequency second excitation synchronization signal Vs2a is the same as the waveform of the second excitation synchronization signal Vs2 of the first embodiment, as shown in FIG. That is, the cycle Ts2a, the high time ta2a, and the low time tb2a of the second excitation synchronization signal Vs2a for low frequency are set to be the same as the cycle Ts2, the high time ta2, and the low time tb2 of the second excitation synchronization signal Vs2. ing.
- the low-frequency second excitation synchronization signal Vs2a is transmitted from a signal generation circuit (not shown) provided in the system control unit 8 in this embodiment.
- the period Ts2b of the high frequency second excitation synchronization signal Vs2b is half of the period Ts1a of the low frequency second excitation synchronization signal Vs2a.
- the high time ta2b and the low time tb2b of the high frequency second excitation synchronization signal Vs2b are respectively half of the high time ta2a and the low time tb2a of the low frequency second excitation synchronization signal Vs2a. Is set.
- the high-frequency second excitation synchronization signal Vs2b is transmitted from a signal generation circuit (not shown) provided in the system control unit 8.
- the third transmission gate 42a receives and receives the low-frequency second excitation synchronization signal Vs2a, and the third transmission gate 42a connects the N-channel MOS transistor Q7 and the P-channel MOS transistor Q8 connected in parallel with each other. Including.
- the first switching signal SW1 is received at the gate terminal of the N channel MOS transistor Q7, and the first switching signal SW1 is received through the first inverter circuit 43 at the gate terminal of the P channel MOS transistor Q8. . Therefore, when the high-level first switching signal SW1 is received by the third transmission gate 42a, the third transmission gate 42a transmits the low-frequency second excitation synchronization signal Vs2a to the second AND circuit 22.
- the fourth transmission gate 42b receives the second excitation synchronization signal Vs2b for high frequency
- the fourth transmission gate 42b includes an N channel MOS transistor Q9 and a P channel MOS transistor Q10 connected in parallel to each other.
- the first switching signal SW1 is received at the gate terminal of the N-channel MOS transistor Q9 via the inverter circuit 43, and the switching signal SW1 is received at the gate terminal of the P-channel MOS transistor Q10. Accordingly, when the low-level first switching signal SW1 is received by the fourth transmission gate 42b, the fourth transmission gate 42b transmits the high-frequency second excitation synchronization signal Vs2b to the second AND circuit 22.
- the second switching circuit 42 transmits the low-frequency second excitation synchronization signal Vs 2 a to the second AND circuit 22.
- the second switching circuit 42 receives the low-level first switching signal SW ⁇ b> 1, the second switching circuit 42 transmits the high-frequency second excitation synchronization signal Vs ⁇ b> 2 b to the second AND circuit 22.
- the first AND circuit 21 receives the first excitation synchronization signal Vs1a for low frequency and the second The AND circuit 22 receives the second excitation synchronization signal Vs2a for low frequency.
- the first switching circuit 41, 42 receives the low-level first switching signal SW1
- the first AND circuit 21 receives the high-frequency first excitation synchronization signal Vs1b
- the second The AND circuit 22 receives the high frequency second excitation synchronization signal Vs2b.
- the first switching signal SW1 is at the high level, and the first and second OR circuits 21 and 22 send the first and second OR circuits 23 and 24 to the first and second output signals Vrs1 and Vrs2.
- the first and second AND circuits 21 and 22 have first and second on / off signals having the same logic values as the low-frequency first and second excitation synchronization signals Vs1a and Vs2a, respectively.
- Vg2 is transmitted to the gates of the first and second power transistors Q1, Q2, respectively.
- the first power transistor Q1 and the second power transistor are the same as in the above embodiment.
- Q2 is alternately turned on and off continuously.
- the first power transistor Q1 and the second power transistor Q2 are alternately turned on and off, whereby the primary coil L1 is continuously excited.
- the first switching signal SW1 is at the low level, and the first and second AND circuits 21 and 22 have the same logical value as the inverter control signal Vss from the first and second OR circuits 23 and 24.
- the first and second AND circuits 21 and 22 receive the first and second excitation synchronization signals for high frequency as shown in FIG.
- First and second on / off signals Vg2 having the same logical values as the logical values of Vs1b and Vs2b are transmitted to the gates of the first and second power transistors Q1 and Q2, respectively.
- the first power transistor Q1 and the first power transistor Q1 are alternately turned on and off continuously and at high speed. Then, the first power transistor Q1 and the second power transistor Q2 are alternately turned on and off, whereby the primary coil L1 is continuously excited and driven at a high frequency.
- the first switching signal SW1 is at a high level
- the first and second AND circuits 21 and 22 have the same logical value as that of the intermittent high signal Vst from the first and second OR circuits 23 and 24, respectively.
- the first and second AND circuits 21 and 22 as shown in FIG.
- First and second on / off signals Vg2 having the same logical values as the logical values of Vs1a and Vs2a are transmitted to the gates of the first and second power transistors Q1 and Q2, respectively.
- the first power transistor Q1 and the second power transistor Q2 are responsive to the low frequency first excitation synchronization signal Vs1a and the low frequency second excitation synchronization signal Vs2a. Turns on and off alternately.
- the first power transistor Q1 and the second power transistor Q2 are intermittently turned on and off, whereby the primary coil L1 is intermittently driven.
- the first switching signal SW1 is at the low level, and the first and second AND circuits 21 and 22 have the same logic value as that of the inverter control signal Vss from the first and second OR circuits 23 and 24.
- the first and second AND circuits 21 and 22 receive the first and second excitation synchronization signals for high frequency as shown in FIG.
- First and second on / off signals Vg2 having the same logical values as the logical values of Vs1b and Vs2b are transmitted to the gates of the first and second power transistors Q1 and Q2, respectively.
- the first power is supplied while the intermittent high signal Vst is being transmitted.
- the transistor Q1 and the second power transistor Q2 are alternately turned on and off intermittently and at high speed.
- the first power transistor Q1 and the second power transistor Q2 are alternately turned on and off alternately, whereby the primary coil L1 is intermittently driven at a high frequency.
- the power supply device 1 configured in this way is effective when the mounted device E requests excitation at two different frequencies in the current state.
- the device E transmitting / receiving circuit 9 when the device E transmitting / receiving circuit 9 generates and transmits the excitation request signal RQ, the device E requests the excitation request signal RQ to supply power to the secondary coil L2 with low frequency excitation.
- a type signal indicating whether power supply is required by excitation at a high frequency is also transmitted.
- the primary coil L1 is lowered from the high frequency excitation drive. By changing to frequency excitation drive, power consumption can be reduced.
- the primary coil L1 is changed from the high frequency excitation drive to the low frequency excitation drive, thereby enabling more efficient control.
- the device E may transmit a type signal for requesting excitation of one of the frequencies from start to finish.
- the excitation control circuit 14 transmits the excitation request signal RQ and the type signal to the system control unit 8.
- the system control unit 8 Based on the type signal, the system control unit 8, when the mounted device E requests low frequency excitation, the first and second switching circuits provided in the oscillation circuit 16 of the high frequency inverter circuit 15.
- the high-level first switching signal SW1 is transmitted to 41 and 42.
- the first AND circuit 21 receives the low-frequency first excitation synchronization signal Vs1a
- the second AND circuit 22 receives the low-frequency second excitation synchronization signal Vs2a.
- the primary coil L1 is intermittently excited or continuously excited based on the low frequency first and second excitation synchronization signals Vs1a and Vs2a.
- the primary coil L1 is excited with a low frequency according to the request of the mounted device E.
- the system control unit 8 transmits the first switching signal SW1 at the low level to the first and second switching circuits 41 and 42. To do.
- the first AND circuit 21 receives the high-frequency first excitation synchronization signal Vs1b
- the second AND circuit 22 receives the high-frequency second excitation synchronization signal Vs2b.
- the primary coil L1 is intermittently excited or continuously excited based on the high frequency high frequency first and second excitation synchronization signals Vs1b and Vs2b.
- the primary coil L1 is excited with a high frequency according to the request of the mounted device E.
- the system control unit 8 sends a high-level first switching signal SW1 to the first and second switching circuits 41 and 42 when intermittent excitation is performed when the device E is not placed. Send.
- the power consumption can be reduced by performing the excitation operation at a low frequency.
- the system control unit 8 immediately , the first switching circuit 41 selects the low-frequency first excitation synchronization signal Vs1a, and the second switching circuit 42 selects the low-frequency second excitation synchronization signal. Vs2a is selected.
- the primary coil L1 is continuously excited when the first and second power transistors Q1 and Q2 are alternately turned on and off by the low-frequency first and second excitation synchronization signals Vs1a and Vs2a.
- the mounted device E is supplied with power by being continuously excited at a low frequency.
- the excitation request signal RQ, the device authentication signal ID, and the excitation request type signal at a low frequency disappear from the device E.
- the system control unit 8 immediately moves to intermittent excitation as in the first embodiment.
- the system control unit 8 continues to transmit the high-level first switching signal SW1. Therefore, the first switching circuit 41 maintains the selection state of the low-frequency first excitation synchronization signal Vs1a, and the second switching circuit 42 maintains the selection state of the low-frequency second excitation synchronization signal Vs2a. While the intermittent high signal Vst is being transmitted, the first and second power transistors Q1, Q2 are alternately turned on and off by the low-frequency first and second excitation synchronization signals Vs1a, Vs2a, whereby the primary coil L1. Is intermittently excited.
- the system control unit 8 Immediately, the low-level first switching signal SW1 is transmitted. Therefore, the first switching circuit 41 selects the high-frequency first excitation synchronization signal Vs1b, and the second switching circuit 42 selects the high-frequency second excitation synchronization signal Vs2b.
- the primary coil L1 is continuously excited by alternately turning on and off the first and second power transistors Q1 and Q2 by the high-frequency first and second excitation synchronization signals Vs1b and the second excitation synchronization signal Vs2b.
- the mounted device E is supplied with power by being continuously excited at a high frequency.
- this embodiment can perform an excitation operation at a low frequency during intermittent excitation where the device E is not placed, and can reduce power consumption. .
- excitation power can be supplied at two different frequencies in the state of the mounted device E, and control with higher accuracy and higher efficiency is possible.
- the first excitation synchronization signal Vs1 and the second excitation synchronization signal Vs2 are logical signals that are transmitted continuously.
- the present embodiment is characterized in that the excitation synchronization signal is transmitted when necessary.
- FIG. 18 shows an electric circuit showing the high-frequency inverter circuit 15 of each power supply module M.
- the third switching circuit 45 is connected to the gate terminal of the first power transistor Q1
- the fourth switching circuit 46 is connected to the gate terminal of the second power transistor Q2.
- the third switching circuit 45 receives the intermittent first excitation synchronization signal Vs1i from the system control unit 8 and the continuous first excitation synchronization signal Vs1c from the first excitation synchronization signal generation circuit 17a.
- the third switching circuit 45 selects one of the intermittent first excitation synchronization signal Vs1i and the continuous first excitation synchronization signal Vs1c, and the first on / off signal Vg1 having the same logical value as the logical value of the selected signal. Is transmitted to the gate terminal of the first power transistor Q1.
- the fourth switching circuit 46 receives the intermittent second excitation synchronization signal Vs2i from the system control unit 8, and receives the continuous second excitation synchronization signal Vs2c from the second excitation synchronization signal generation circuit 17b.
- the fourth switching circuit 46 selects either the second excitation synchronization signal Vs2i for intermittent use or the second excitation synchronization signal Vs2c for continuous use, and a second on / off signal Vg2 having the same logical value as the logical value of the selected signal. Is transmitted to the gate terminal of the second power transistor Q2.
- the third switching circuit 45 includes a fifth transmission gate 45a and a sixth transmission gate 45b.
- the output terminal of the fifth transmission gate 45a is connected to the gate terminal of the first power transistor Q1, and the intermittent first excitation synchronization signal Vs1i is received from the system control unit 8 at the input terminal of the fifth transmission gate 45a. Is done.
- the output terminal of the sixth transmission gate 45b is connected to the gate terminal of the first power transistor Q1, and the input terminal of the sixth transmission gate 45b is connected to the first excitation synchronization signal Vs1c for continuation from the first excitation synchronization signal generation circuit 17a. Is received.
- the fifth transmission gate 45a includes an N channel MOS transistor Q11 and a P channel MOS transistor Q12 connected in parallel to each other.
- the second switching signal SW2 is received at the gate terminal of the N-channel MOS transistor Q11, and the second switching signal SW2 is received at the gate terminal of the P-channel MOS transistor Q12 via the second inverter circuit 47.
- the fifth transmission gate 45a sends the intermittent first excitation synchronization signal Vs1i from the system control unit 8 to the first power transistor Q1. Send to the gate terminal.
- the fifth transmission gate 45a receives the intermittent first excitation synchronization signal Vs1i from the system control unit 8 as the first power transistor. Do not transmit to the gate terminal of Q1.
- the sixth transmission gate 45b includes an N channel MOS transistor Q13 and a P channel MOS transistor Q14 connected in parallel to each other.
- the second switching signal SW2 is received at the gate terminal of the N channel MOS transistor Q13 via the second inverter circuit 47, and the second switching signal SW2 is received at the gate terminal of the N channel MOS transistor Q13.
- the sixth transmission gate 45b receives the first excitation synchronization signal Vs1c for continuation from the first excitation synchronization signal generation circuit 17a. Transmit to the gate terminal of the power transistor Q1.
- the sixth transmission gate 45b receives the first excitation synchronization signal Vs1c for continuation from the first excitation synchronization signal generation circuit 17a. 1 Do not transmit to the gate terminal of the power transistor Q1.
- the third switching circuit 45 when the high-level second switching signal SW2 is received by the third switching circuit 45, the third switching circuit 45 has the first logical value that is the same as the logical value of the intermittent first excitation synchronization signal Vs1i.
- the signal Vg1 is transmitted to the gate terminal of the first power transistor Q1.
- the third switching circuit 45 when the low-level second switching signal SW2 is received by the third switching circuit 45, the third switching circuit 45 has the same logical value as the logical value of the continuous first excitation synchronization signal Vs1c.
- the on / off signal Vg1 is transmitted to the gate terminal of the first power transistor Q1.
- the fourth switching circuit 46 has a seventh transmission gate 46a and an eighth transmission gate 46b.
- the output terminal of the seventh transmission gate 46a is connected to the gate terminal of the second power transistor Q2, and the intermittent second excitation synchronization signal Vs2c is received from the system control unit 8 at the input terminal of the seventh transmission gate 46a. Is done.
- the output terminal of the eighth transmission gate 46b is connected to the gate terminal of the second power transistor Q2.
- the input terminal of the eighth transmission gate 46b is connected to the second excitation synchronization signal Vs2c for continuation from the second excitation synchronization signal generating circuit 17b. Is received.
- the seventh transmission gate 46a includes an N channel MOS transistor Q15 and a P channel MOS transistor Q16 connected in parallel to each other.
- the third switching signal SW3 is received at the gate terminal of the N-channel MOS transistor Q15, and the third switching signal SW3 is received through the third inverter circuit 48 at the gate terminal of the P-channel MOS transistor Q16.
- the seventh transmission gate 46a sends the intermittent second excitation synchronization signal Vs2i from the system control unit 8 to the second power transistor Q2. Send to the gate terminal.
- the seventh transmission gate 46a receives the intermittent second excitation synchronization signal Vs2i from the system control unit 8 and the second power transistor Q2. Do not send to the gate terminal.
- the eighth transmission gate 46b includes an N channel MOS transistor Q17 and a P channel MOS transistor Q18 connected in parallel to each other.
- the third switching signal SW3 is received at the gate terminal of the N-channel MOS transistor Q17 via the third inverter circuit 48, and the third switching signal SW3 is received at the gate terminal of the P-channel MOS transistor Q16.
- the eighth transmission gate 46b receives the intermittent second excitation synchronization signal Vs2i from the second excitation synchronization signal generation circuit 17b. Transmit to the gate terminal of the power transistor Q2.
- the eighth transmission gate 46b receives the second excitation synchronization signal Vs2c for continuation from the second excitation synchronization signal generation circuit 17b. 2. Do not transmit to the gate terminal of the power transistor Q2.
- the fourth switching circuit 46 when the fourth switching circuit 46 receives the high-level third switching signal SW3, the fourth switching circuit 46 has the second logical value that is the same as the logical value of the intermittent second excitation synchronization signal Vs2i.
- the signal Vg2 is transmitted to the gate terminal of the second power transistor Q2.
- the fourth switching circuit 46 when the fourth switching circuit 46 receives the low-level third switching signal SW3, the fourth switching circuit 46 has the same logical value as the logical value of the continuous second excitation synchronization signal Vs2c.
- An on / off signal Vg2 is transmitted to the gate terminal of the second power transistor Q2.
- the first excitation synchronization signal generating circuit 17a receives the drive control signal CT from the excitation control circuit 14 in response to the permission signal EN from the system control unit 8. In response to the drive control signal CT, the first excitation synchronization signal generation circuit 17a performs the third switching between the low-level second switching signal SW2 and the continuous first excitation synchronization signal Vs1c, as shown in FIG. Transmit to circuit 45. Therefore, the third switching circuit 45 transmits the first excitation synchronization signal Vs1c for continuation to the first power transistor Q1 when the enable signal EN is transmitted. Incidentally, when the enabling signal EN is not transmitted, the third switching circuit 45 transmits the intermittent first excitation synchronization signal Vs1i to the first power transistor Q1.
- the second excitation synchronization signal generation circuit 17b receives the drive control signal CT from the excitation control circuit 14 in response to the permission signal EN from the system control unit 8. In response to the drive control signal CT, the second excitation synchronization signal generation circuit 17b generates a low-level third switching signal SW3 and a continuous second excitation synchronization signal Vs2c as shown in FIG. 46. Therefore, the fourth switching circuit 46 transmits the second excitation synchronization signal Vs2c for continuation to the second power transistor Q2 when the permission signal EN is transmitted. Incidentally, the fourth switching circuit 46 transmits the intermittent second excitation synchronization signal Vs2i to the first power transistor Q1 when the enable signal EN is not transmitted.
- the intermittent first and second excitation synchronization signals Vs1i and Vs2i and the continuous first and second excitation synchronization signals Vs1c and Vs2c will be described.
- the intermittent first excitation synchronization signal Vs1i and the intermittent second excitation synchronization signal Vs2i correspond to the first on / off signal Vg1 and the second on / off signal Vg2 when intermittent excitation is performed in the first embodiment, respectively.
- the waveform of the first excitation synchronization signal Vs1i for intermittent use is the same as the waveform of the first excitation synchronization signal Vs1 having the same logical value as that of the first on / off signal Vg1 transmitted when the intermittent high signal Vst is transmitted. The same.
- the waveform of the second excitation synchronization signal Vs2i for intermittent use is the same as the waveform of the second excitation synchronization signal Vs2 having the same logical value as that of the second on / off signal Vg2 transmitted when the intermittent high signal Vst is transmitted. The same.
- the continuous first excitation synchronization signal Vs1c and the continuous second excitation synchronization signal Vs2c correspond to the first on / off signal Vg1 and the second on / off signal Vg2 when the continuous excitation is performed in the first embodiment, respectively.
- the waveform of the continuous first excitation synchronization signal Vs1c is the first excitation synchronization signal having the same logical value as that of the first on / off signal Vg1 transmitted when the high-level inverter control signal Vss is transmitted. It is the same as the waveform of Vs1.
- the waveform of the second excitation synchronization signal Vs2c for continuation is the second excitation synchronization signal having the same logical value as that of the second on / off signal Vg2 transmitted when the high-level inverter control signal Vss is transmitted. It is the same as the waveform of Vs2.
- this embodiment can perform intermittent excitation synchronously as in the first embodiment. Further, when the device E is placed, the present embodiment can perform continuous excitation synchronized with the corresponding primary coil L1.
- the first and second excitation synchronization signals Vs1c and Vs2c for continuation are generated by the first and second excitation synchronization signal generation circuits 17a and 17b of the power supply device 1, respectively.
- the present embodiment is characterized in that the first and second excitation synchronization signals Vs1c and Vs2c for continuation are generated by the first and second excitation synchronization signal generation circuits 17a and 17b by signals from the device E. Yes.
- FIG. 21 shows an electric circuit diagram of each power supply module M of the fifth embodiment.
- the device E includes a second device side transmission / reception circuit 9 a in addition to the device side transmission / reception circuit 9.
- the second device-side transmission / reception circuit 9a generates an amplitude-modulated modulation signal Sin1 that determines an excitation cycle when the secondary coil L2 of the second device is energized and fed, and the generated modulation signal Sin1 is transmitted via the antenna AT4.
- the data is transmitted to the power supply module M located immediately below.
- the modulation signal Sin1 has a large amplitude value and a small amplitude value that are alternately repeated for a certain period.
- the excitation request receiving circuit 11 of the power supply module M receives the modulation signal Sin1 from the second device side transmitting / receiving circuit 9a.
- the excitation request receiving circuit 11 detects and demodulates the modulation signal Sin1.
- the excitation request receiving circuit 11 shapes the modulation signal Sin1 into a high level logic signal Sin2 during a period in which the amplitude value is large, and sets the modulation signal Sin1 in a low level during a period in which the amplitude value is small. Waveform shaping to logic signal Sin2. Then, the excitation request receiving circuit 11 transmits the logic signal Sin2 to the excitation control circuit 14.
- the excitation control circuit 14 transmits this logic signal Sin2 to the first and second excitation synchronization signal generation circuits 17a and 17b shown in FIG. 18 provided in the high frequency inverter circuit 15 of the fourth embodiment.
- the first excitation synchronization signal generation circuit 17a generates the first excitation synchronization signal Vs1c for continuation as shown in FIG. 22 based on the logic signal Sin2. More specifically, the continuous first excitation synchronization signal Vs1c becomes a high level after the logic signal Sin2 rises to a high level, and falls to a low level before the logic signal Sin2 falls to a low level.
- the second excitation synchronization signal generating circuit 17b generates a second excitation synchronization signal Vs2c for continuation as shown in FIG. 22 based on the logic signal Sin2. More specifically, the continuous second excitation synchronization signal Vs2c becomes high level after the logic signal Sin2 falls to the low level, and falls to the low level before the logic signal Sin2 rises to the high level.
- a dead time td at which the continuous first excitation synchronization signal Vs1c and the continuous second excitation synchronization signal Vs2c are both low is formed.
- the excitation power supply is performed at the excitation frequency required by the device E. Therefore, highly accurate and highly efficient power supply control according to the device E is possible.
- the excitation request receiving circuit 11 generates the logic signal Sin2 by detecting and demodulating the modulation signal Sin1.
- the excitation request receiving circuit 11 shapes the modulation signal Sin1 into a positive potential logic signal Sin2 during a period when the amplitude value is large, and a minus potential logic signal during a period when the amplitude value is small.
- the waveform may be shaped to Sin2.
- the continuous first excitation synchronization signal Vs1c and the continuous second excitation synchronization signal Vs2c may be generated.
- the excitation request signal RQ from the device E is received by the signal receiving antenna AT1 of the power supply module M, and the received excitation request signal RQ is transmitted to the excitation request receiving circuit 11.
- the present embodiment is characterized in that the excitation request signal RQ from the device E is received by the primary coil L1 of the power supply module M.
- FIG. 24 is an electric circuit diagram of the power supply module M and the device E according to the sixth embodiment.
- the load Z of the device E transmits the device-side excitation request modulation signal VL12 to the primary coil L1 via the secondary coil L2.
- the device-side excitation request modulation signal VL12 is a voltage waveform or current waveform generated in the secondary coil L2 based on continuous excitation of the primary coil L1, and an excitation request signal by the load Z of the device E. Generated by amplitude modulation.
- the load Z of the device E performs modulation.
- the device-side excitation request modulation signal VL12 has a large amplitude value and a small amplitude value that are alternately repeated for a certain period.
- the device authentication signal ID is generated by the device-side transmitting / receiving circuit 9 as in the first embodiment.
- the primary coil L1 of the power supply module M receives the power supply side excitation request modulation signal VL11 having a voltage level proportional to the voltage level of the device side excitation request modulation signal VL12.
- the received power supply side excitation request modulation signal VL11 is transmitted from the primary coil L1 to the excitation request receiving circuit 11a.
- the excitation request receiving circuit 11a detects the power supply side excitation request modulation signal VL11. As a result, as shown in FIG. 25, the excitation request receiving circuit 11a shapes the power supply side excitation request modulation signal VL11 into a positive potential logic signal Sin3 during a period in which the amplitude value is large, and in the period in which the amplitude value is small. The excitation request modulation signal VL11 is shaped into a negative potential logic signal Sin3. Then, the excitation request receiving circuit 11a transmits the logic signal Sin3 to the excitation control circuit 14. The excitation control circuit 14 transmits this logic signal Sin3 to the excitation synchronization signal generation circuit 17 shown in FIG. 4 provided in the high frequency inverter circuit 15 of the first embodiment.
- the excitation synchronization signal generation circuit 17 transmits an inverter control signal Vss having the same logical value as the logical value of the logical signal Sin3 to the first and second OR circuits 23 and 24 of the oscillation circuit 16.
- the power supply device 1 is provided with the first and second excitation synchronization signals Vs1 and Vs2, and the primary coils L1 are connected to each other in accordance with the device-side excitation request modulation signal VL12 from the device E. Since the synchronous excitation is performed, the circuit of the device E is simplified.
- the first and second power transistors Q1, Q2 of the oscillation circuit 16 of the high-frequency inverter circuit 15 are turned on / off based on the device-side excitation request modulation signal VL12 of the device E.
- the oscillation of various frequencies and the oscillation of the pattern can be controlled.
- the device-side excitation request modulation signal VL12 can be transmitted via a signal path independent from the device E, the device-side excitation request modulation signal VL12 has high reliability.
- the circuit configuration for transmitting power is simplified. it can.
- each power supply module M can exchange information with the device E and supply minute electric power to the device E.
- FIG. 26 shows an electrical block circuit of the power supply module M and the device E of this embodiment.
- a power supply side transmission / reception circuit 49 is added to the power supply module M.
- the power feeding side transmission / reception circuit 49 transmits various signals toward the mounted device E via the power feeding side antenna AT5. Further, the power supply side transmission / reception circuit 49 receives various signals transmitted from the device E other than the excitation request signal RQ and the device authentication signal ID via the power supply side antenna AT5. Further, the power feeding side transmission / reception circuit 49 supplies minute power to the device E by exciting the power feeding side antenna AT5.
- the device E includes a third device side transmission / reception circuit 9b in addition to the device side transmission / reception circuit 9.
- the third device side transmission / reception circuit 9b is connected to the device side antenna AT6, receives various signals transmitted from the power supply side transmission / reception circuit 49, and receives various signals toward the power supply module M directly below the device side antenna AT6. Send.
- the third device-side transmission / reception circuit 9b receives the minute secondary supply power generated by the device-side antenna AT6 when the power-feed-side antenna AT5 is excited to supply the minute power.
- the device E does not have a power source, there is a power transmission side transmission / reception function capable of supplying an independent minute electric power instead of intermittent excitation of the primary coil L1, so that further lower power consumption is possible.
- the power supply side antenna AT5 and the device side antenna AT6 are used for transmission and reception of signals and supply of minute electric power.
- the antenna AT1 and the transmission / reception antenna AT3 may be substituted.
- the third device-side transmission / reception circuit 9b newly provided in the device E may also be used as the device-side transmission / reception circuit 9 that generates the excitation request signal RQ and the device authentication signal ID.
- continuous excitation is not performed while the device E is mounted, but each time the continuous excitation passes a predetermined constant drive time, the fixed time is sufficiently shorter than the predetermined constant drive time. This is characterized in that the excitation of the primary coil L1 is stopped.
- the power supply device 1 shown in FIGS. 3 and 4 described in the first embodiment is embodied. Therefore, for convenience of description, the characteristic portions are described in detail, and the present embodiment and the first embodiment are described. The common part between is omitted.
- a first transfer gate made of a MOS transistor is connected between the output terminal of the first AND circuit 21 and the gate terminal of the first power transistor Q1.
- a second transfer gate made of a MOS transistor is connected between the output terminal of the second AND circuit 22 and the gate terminal of the second power transistor Q2.
- Vg1, Vg2 first and second excitation synchronization signals Vs1, Vs2 are cut off.
- This cutoff signal is generated by the system control unit 8 in the present embodiment.
- the system control unit 8 counts the built-in timer from when the permission signal EN is transmitted when the device E is mounted, and is sufficient compared to the drive time ty each time a predetermined drive time ty elapses.
- a cut-off signal is transmitted for a short predetermined pause time tz. Therefore, while the permission signal EN is transmitted by placing the device E, the cutoff signal is transmitted for the pause time tz each time the drive time ty elapses.
- the power feeding apparatus 1 continuously performs the processing operation illustrated in FIG. 10 as in the first embodiment.
- the device authentication signal ID and the excitation request signal RQ can be received and determined and transmitted during the pause time tz when the continuous excitation of the primary coil L1 is stopped, more reliable power feeding can be performed. It becomes possible.
- a ninth embodiment will be described with reference to FIG.
- a plurality of primary coils L1 provided in the power supply apparatus 1 are divided into a plurality of groups, and intermittently excited for each of the divided groups, and intermittently excited each time. This is characterized in that the excitation patterns indicating the order of the points are different.
- FIG. 28 illustrates an arrangement state of primary coils of the power feeding device 1 according to the ninth embodiment.
- the mounting surface 6 is divided into three parts in the X direction and divided into four parts in the Y direction.
- twelve first to twelfth divided areas A1 to A12 are partitioned.
- Each of the first to twelfth divided areas A1 to A12 includes four primary coils L1.
- the timings at which the primary coils L1 in the first to twelfth divided areas A1 to A12 are intermittently excited are different.
- the primary coil L1 of the first to twelfth divided areas A1 to A12 is intermittent in the order of the first divided area A1, the second divided area A2, ..., the eleventh divided area A11, and the twelfth divided area A12. Excited.
- intermittent excitation of the twelfth divided area A12 ends, intermittent excitation is performed again from the first divided area A1, and such an order is repeated.
- the intermittent excitation timing patterns of the first to twelfth divided areas A1 to A12 are controlled by the system controller 8. That is, in the first embodiment, when the power switch is turned on, the system control unit 8 sends the first excitation synchronization signal Vs1, the second excitation synchronization signal Vs2, and the intermittent high to the power supply module M of each primary coil L1. The signal Vst was transmitted all at once. In the case of the present embodiment, the system control unit 8 applies the power supply modules M of the four primary coils L1 belonging to each of the first to second divided areas A1 to A12 in order at a predetermined timing. The first excitation synchronization signal Vs1, the second excitation synchronization signal Vs2, and the intermittent high signal Vst are transmitted.
- the system control unit 8 changes the intermittent excitation timing pattern of the first to second divided areas A1 to A12 previously performed.
- the intermittent excitation timing patterns in the order of the first divided area A1, the second divided area A2,..., The twelfth divided area A12 are the twelfth divided area A12, the eleventh divided area A11,.
- the pattern is changed to the opposite intermittent excitation timing pattern of the second divided area A2 and the first divided area A1. This is so that the system control unit 8 executes an intermittent excitation pattern different from the previously performed intermittent excitation pattern every time a predetermined time elapses.
- the data of this different intermittent excitation pattern is prepared in the system control unit 8.
- the system control unit 8 changes the intermittent excitation timing pattern of each of the first to twelfth divided areas A1 to A12 using the intermittent excitation pattern data.
- the primary coil L1 when the device E is not placed or the primary coil L1 other than the place where the device E is placed is intermittently excited in a time-sharing manner for each divided area when in a standby state. Therefore, standby time can be reduced, and power consumption in the standby state can be reduced.
- the present embodiment is characterized in that the power feeding device 1 is arranged and positioned so as not to be directly visible on at least one of the indoor floor, wall, and ceiling. As illustrated in FIG. 29, the power feeding device 1 is disposed below the floor 51 of the room 50, inside the wall 52, and above the ceiling 53.
- the power feeding device 1 arranged on the floor 51 is accommodated and arranged in a space S that is configured under the floor 51 and surrounded by a frame body 60 as a lattice-like wooden frame. After the power feeding device 1 is accommodated and disposed in an appropriate space S, the floor plate 52 is stretched and disposed below the invisible floor 51.
- the power feeding device 1 disposed on the wall 52 and the ceiling 53 is also housed and disposed in a space that is configured on the wall 52 and on the ceiling 53 and surrounded by a grid-like frame, It arrange
- Each power supply device 1 disposed under the floor 51, in the wall 52, and on the ceiling 53 is connected to an outlet provided in the floor 51, in the wall 52, and on the ceiling 53, respectively. Connected to the device plug.
- the illuminating device E1 is arrange
- a TV device E2 is arranged at a position opposite to the power feeding device 1 provided in the wall 52.
- the TV device E2 receives a non-contact power supply from the power supply device 1 provided in the wall 52 and displays a television.
- the speaker device E3 is arranged at a position opposite to the power feeding device 1 provided under the floor 51. And the speaker apparatus E3 receives non-contact electric power feeding from the electric power feeder 1 provided under the floor 51, and plays music.
- the power feeding device 1 can be easily attached and detached from the space S surrounded by the frame body 60, the arrangement of the power feeding device 1 can be changed. Therefore, as shown in FIG. 32, the layout of the speaker device E3 in the room 50 can be freely changed by appropriately changing the position of the power supply device 1 provided under the floor 51 according to the position of the speaker device E3. Can be changed.
- the user can freely change the arrangement of the power feeding device 1 at any time.
- the arrangement of the power feeding device 1 under the floor 51, in the wall 52, and on the ceiling 53 can be freely changed by the user by selecting and embedding an appropriate position in advance during installation work. It does not have to be.
- the devices E1, E2, and E3 provided on the floor 51, the wall 52, and the ceiling 53 of the room 50 receive power from the corresponding power feeding devices 1 in a non-contact manner.
- the cord which supplies electric power like is lost.
- the devices are connected by a number of cords, limiting the degree of freedom of device placement, detracting from aesthetics, and being free from dust and difficult to clean.
- baseboards 61 and 62 provided along the lowermost end of the wall 52
- baseboards 63 and 64 provided along the uppermost end of the wall 52
- the wall 52 and the wall 52 may be arranged in a baseboard 65 provided along the vertical direction and a baseboard 66 provided in the center of the ceiling 53.
- the power feeding device 1 may be arranged in a baseboard 67 that is provided along the left-right direction at the center of the wall 52 and has a duct shape.
- the power feeding device 1 disposed on the baseboard 61 provided along the lowermost end of the wall 52 is accommodated and disposed at a predetermined position in the baseboard 61 as shown in FIG.
- the power feeding device 1 is placed in the skirting board 61 so as not to be seen by the upper plate 61a being stretched after being housed and placed in a predetermined space.
- the some mobile apparatus E4 and the illuminating device E1 are arrange
- the lighting device E1 is lit by receiving non-contact power feeding from the power feeding device 1.
- the power feeding device 1 can be freely moved and arranged in the longitudinal direction in the skirting board 61. Therefore, the arrangement positions of the mobile device E4 and the lighting device E1 can be freely changed according to the lifestyle.
- the power feeding device 1 accommodated and arranged in the skirting board 63 provided along the uppermost end of the wall 52 is also accommodated and arranged in the same manner.
- a spot-type lighting device E1 is disposed at a position opposite to the power feeding device 1. The spot-type lighting device E1 is lit by receiving non-contact power feeding from the power feeding device 1.
- the baseboard 65 which is the intersection of the wall 52 and the wall 52 and is provided along the vertical direction, is also accommodated in the same manner.
- the speaker apparatus E3 is arrange
- FIG. The speaker device E3 can be driven by receiving non-contact power feeding from the power feeding device 1.
- the power feeding device 1 may be disposed in a baseboard 67 provided in the center of the wall 52 along the left-right direction and having a duct shape.
- the illuminating device E1 is arrange
- the illumination device E1 is turned on by receiving non-contact power supply from the power supply device 1.
- the power feeding device 1 in the skirting board 67 having a duct shape can be freely moved and arranged in the longitudinal direction. Therefore, the arrangement position of the lighting device E1 can be freely changed according to the lifestyle.
- this embodiment is safe because the cords of the devices E1 to E4 in the room 50 can be completely eliminated and the cords are not tripped. Moreover, since there is no cord, the room 50 can be easily cleaned.
- each device E1-E4 can be changed by yourself according to your style.
- the power feeding device 1 can be arranged at a position where a person can easily touch and a position where dust easily collects, the power feeding device 1 is safe and highly reliable.
- the power feeding apparatus 1 of each embodiment was single was demonstrated, the power feeding apparatus which has the mounting surface which has one big area by comprising the several power feeding apparatus 1 side by side is comprised, or several The power supply apparatus having one long mounting surface may be implemented by arranging the power supply apparatus 1 in one direction along the belt shape.
- the system control unit 8 of each power supply apparatus 1 needs to be connected so as to be able to exchange data with each other.
- the power feeding device 1 has a plurality of primary coils L1 arranged in a planar shape.
- the present embodiment is characterized in that a plurality of primary coils L1 are arranged along a line in one direction.
- a plurality of primary coils L1 are arranged in one row, that is, along a line in the housing 2 of the power supply apparatus 1, and a power supply module M is provided for each primary coil L1. Is arranged.
- the portion located on the upper side of the plurality of primary coils L1 arranged along the linear shape becomes a belt-like placement surface 6 extending linearly, and the device E is placed on the belt-like placement surface 6. The When the device E is placed on the belt-like placement surface 6, the device E is supplied with power by exciting one or more primary coils L ⁇ b> 1 positioned immediately below the device E.
- the power feeding device 1 in which a plurality of primary coils L1 are arranged in one row, that is, along a linear shape, is arranged along a ceiling or a wall.
- the plurality of spot-type lighting devices E1 are fed from the power supply device 1. Turns on when it is turned on.
- a plurality of primary coils L1 may be arranged on the surface (columnar surface shape) of a columnar handrail 69.
- the present embodiment is characterized in that a resonance circuit is provided in the secondary coil L2 of the device E.
- the secondary coil L2 provided in the device E has a capacitor Cz connected in parallel and resonates at the drive frequency of the power supply module M (primary coil L1).
- the secondary coil L2 may be connected in series to the capacitor Cz and resonate at the drive frequency of the power supply module M.
- the device E feeds power while the device E is placed on the placement surface 6 of the power feeding device 1 or the device E is placed close to the power feeding device 1 as in the tenth embodiment. It had been.
- the present embodiment is characterized in that the device E is arranged so as to be separated from the power supply device 1 by a predetermined distance to supply power to the device E.
- a repeater 70 is disposed between the power feeding device 1 provided in the wall 52 and the TV equipment E2 that is spaced from the wall 52 and faces the power feeding device 1. Is done.
- the repeater 70 is a resonance circuit that resonates at the drive frequency of the primary coil L1, as in the electric circuit shown in FIG.
- the repeater 70 includes a capacitor Cx and an intermediate coil Lx connected in parallel to each other.
- the primary coil L1 magnetically resonates the resonance circuit having the intermediate coil Lx of the repeater 70, and the TV device E2 is supplied with power by exciting the secondary coil L2 with the resonated intermediate coil Lx.
- the repeater 70 is connected to the wall 52 positioned above the power feeding device 1 with respect to the power feeding device 1 accommodated in the baseboard 62 provided along the lowermost end of the wall 52. Is installed.
- the spot-type lighting device E1 disposed on the upper wall 52 of the repeater 70 may receive power from the power supply device 1 via the repeater 70.
- one repeater 70 is arranged between the power supply device 1 and the TV device E2, and in FIG. 40, between the power supply device 1 and the spot-type lighting device E1, respectively. Instead, a plurality of repeaters 70 may be arranged.
- the primary coil L1 has been described by taking a planar coil as an example.
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Abstract
Description
以下、本発明の非接触給電システムを具体化した第1実施形態の給電装置が図面に従って説明される。
図3において、機器Eには、送信回路としての機器側送受信回路9が備えられている。
機器側送受信回路9は、送受信アンテナAT3に接続されている。機器側送受信回路9は、給電装置1にて給電が受けられる機器Eであることを示す機器認証信号ID、及び、給電装置1に対して給電を要求する励磁要求信号RQを生成する。そして、機器側送受信回路9は、その生成した機器認証信号ID及び励磁要求信号RQを、送受信アンテナAT3を介して給電装置1に送信する。
システム制御部8は、(1)励磁要求信号RQを受信している場合、(2)機器認証信号IDを受信している場合には、当該給電モジュールMに接続された1次コイルL1を給電するために、励磁駆動させる許可信号ENを励磁制御回路14に送信する。そして、励磁制御回路14は、システム制御部8からの許可信号ENを受信すると、給電のために1次コイルL1を励磁駆動させる駆動制御信号CTを高周波インバータ回路15に送信する。
発振回路16は、ハーフブリッジ型の部分共振回路である。発振回路16には、給電装置1に設けられた電源電圧Gとグランドとの間に、互いに直列に接続された第1コンデンサC1及び第2コンデンサC2からなる分圧回路が設けられている。この分圧回路には、駆動回路が並列に接続されている。駆動回路は、互いに直列に接続された第1パワートランジスタQ1と第2パワートランジスタQ2とからなる直列回路である。また、第1パワートランジスタQ1と第2パワートランジスタQ2とは、本実施形態では、MOSFETよりなり、第1パワートランジスタQ1と第2パワートランジスタQ2との各ソース・ドレイン間には、それぞれフライホイール用のダイオードD1,D2が接続されている。
詳述すると、第1励磁同期信号Vs1は、予め定められた周期Ts1を有する論理信号である。図5に示すように、第1励磁同期信号Vs1では、ハイの時間ta1がローの時間tb1より短く設定されている。そして、この第1励磁同期信号Vs1は、本実施形態では、システム制御部8に設けた信号生成回路(図示しない)から送信されている。
第1オア回路23は、2入力端子のオア回路である。第1オア回路23の第1入力端子には、図6に示すような、間欠的にハイ・レベルとなる間欠ハイ信号Vstが受信される。
また、第1オア回路23の第2入力端子には、励磁同期信号発生回路17から図7に示すようなインバータ制御信号Vssが受信される。
例えば、載置面6に機器Eが載置されていない時(励磁要求信号RQ及び機器認証信号IDを受信していないとき)、励磁同期信号発生回路17は、ハイ・レベルのインバータ制御信号Vssを第1オア回路23に送信しない。この場合、第1オア回路23の第1入力端子には、周期Tstごとにハイ時間txだけハイ・レベルとなる間欠ハイ信号Vstが受信され、第1オア回路23は、間欠ハイ信号Vstの論理値と同じ論理値を有する第1出力信号Vrs1を、次段の第1アンド回路21に送信する。
また、ここでは、第1及び第2励磁同期信号Vs1,Vs2の各々は、ハイの時間ta1,ta2がローの時間tb1,tb2より短く設定されている。従って、第1励磁同期信号Vs1がハイからローに立ち下がって、第2励磁同期信号Vs2がローからハイに立ち上がるまでの間、及び、第2励磁同期信号Vs2がハイからローに立ち下がって、第1励磁同期信号Vs1がローからハイに立ち上がるまでの間、第1及び第2励磁同期信号Vs1,Vs2の各々が、共にロー・レベルになるデッドタイムtdに設定されている。このデッドタイムtdを設けることによって、第1パワートランジスタQ1と第2パワートランジスタQ2とのソフトスイッチングが可能となる。
また、第2アンド回路22の第2入力端子には、第2オア回路24からの第2出力信号Vrs2が受信される。
因みに、金属片7が載置されず、且つ上記した条件(1)(2)が成立している場合、励磁同期信号発生回路17は、ハイ・レベルのインバータ制御信号Vssを第2オア回路24に送信する。そして、第2オア回路24には、このハイ・レベルのインバータ制御信号Vssが受信され、第2オア回路24は、ハイ・レベルの第2出力信号Vrs2を次段の第2アンド回路22に送信する。
従って、給電のために機器Eが載置面6に載置された時には、給電装置1の機器Eが載置された位置にある1次コイルL1は、連続的に励磁駆動される。
また、2個以上の給電を要求している機器Eが給電装置1の載置面6に載置される場合がある。
尚、上記した2個以上の1次コイルL1を使って給電するサイズの大きい機器Eを載置し、且つ各1次コイルL1に対応して設けられた給電モジュールMの少なくとも1つから金属検出信号STがシステム制御部8に送信される場合がある。この場合には、システム制御部8は、対応する全ての給電モジュールMに対して許可信号ENを送信しない。従って、載置されたサイズの大きい機器Eは給電されない。
図示しない電源スイッチがオンされて、給電装置1に電源が供給されると(ステップS1-1でYES)、1次コイルL1が間欠的に励磁駆動される。すなわち、システム制御部8は、全ての給電モジュールMの高周波インバータ回路15に対して、1次コイルL1を間欠的に励磁駆動させるための第1励磁同期信号Vs1、第2励磁同期信号Vs2及び間欠ハイ信号Vstを送信する(ステップS1-2)。
上記のように構成することによって、本実施形態では、以下の効果を有する。
(6)また、1次コイルL1の間欠励磁は、載置面6に載置され他機器Eの2次コイルL2に対して微小な2次電力を発生させることができるようにした。
尚、本実施形態では、第1オア回路23及び第2オア回路24は、同じインバータ制御信号Vss及び間欠ハイ信号Vstをそれぞれ受信する。従って、第1オア回路23の第1出力信号Vrs1と第2オア回路24の第2出力信号Vrs2とは同じ出力波形であるため、第1オア回路23及び第2オア回路24のいずれか一方が省略されてもよい。そして、例えば、残した第1オア回路23は、第1出力信号Vrs1を第1アンド回路21に送信し、第2アンド回路22に第2出力信号Vrs2を送信してもよい。
また、本実施形態では、機器Eから機器認証信号IDと励磁要求信号RQとが受信されたが、機器認証信号IDだけが受信されたり、また、励磁要求信号RQだけが受信されるような、機器認証信号ID及び励磁要求信号RQのいずれか一方の信号だけが受信されてもよい。これによって、省部品で安価な構成ができる。
(第2実施形態)
次に、第2実施形態の給電装置1が、図11に従って説明される。
図11に示すように、給電装置1の天板5の上面(載置面6)であり、且つ前記各金属検出アンテナAT2の配置位置に、物体検出センサ31がそれぞれ設けられている。従って、各物体検出センサ31は、載置面6の全体に一様に配置されている。
図12において、各給電モジュールMには、励磁要求受信回路11、機器認証受信回路12、金属検出回路13、励磁制御回路14、高周波インバータ回路15に加えて、物体検出回路32が備えられている。
尚、本実施形態は、物体検出センサ31からの物体検出信号MTの有無に基づいてシステム制御部8が制御対象となる1次コイルL1を選定し、その選定された1次コイルL1の励磁制御する点に特徴を有する。その他の本実施形態は、基本的に第1実施形態と同じである。そのため、本実施形態の特徴部分について詳細に説明され、本実施形態と第1実施形態との間の共通の部分が説明の便宜上省略される。
このように、本実施形態は、給電装置1に何も載置されていない場合は、全ての1次コイルL1の励磁動作を停止させるようにしたので、さらに消費電力の低減を図ることができる。
(第3実施形態)
次に、第3実施形態について、図14に従って説明される。
図14は、各給電モジュールMの高周波インバータ回路15を示す電気回路を示す。
そして、第1トランスミッションゲート41aには、低周波用第1励磁同期信号Vs1aが受信され、第1トランスミッションゲート41aは、互いに並列に接続されたNチャネルMOSトランジスタQ3とPチャネルMOSトランジスタQ4を含む。そして、NチャネルMOSトランジスタQ3のゲート端子には第1切替信号SW1が受信され、PチャネルMOSトランジスタQ4のゲート端子には第1インバータ回路43を介して前記第1切替信号SW1が受信される。従って、第1トランスミッションゲート41aにハイ・レベルの第1切替信号SW1が受信されたとき、第1トランスミッションゲート41aは、低周波用第1励磁同期信号Vs1aを第1アンド回路21に送信する。
一方、第2トランスミッションゲート41bには、高周波用第1励磁同期信号Vs1bが送信され、第2トランスミッションゲート41bは、互いに並列に接続されたNチャネルMOSトランジスタQ5とPチャネルMOSトランジスタQ6とを含む。そして、NチャネルMOSトランジスタQ5のゲート端子には第1インバータ回路43を介して前記第1切替信号SW1が受信され、PチャネルMOSトランジスタQ6のゲート端子には前記第1切替信号SW1が受信される。従って、第2トランスミッションゲート41bにロー・レベルの第1切替信号SW1が受信されたとき、第2トランスミッションゲート41bは、高周波用第1励磁同期信号Vs1bを第1アンド回路21に送信する。
そして、励磁要求受信回路11に励磁要求信号RQと種別信号とが受信されると、励磁制御回路14は、その励磁要求信号RQと種別信号とをシステム制御部8に送信する。システム制御部8は、種別信号に基づいて、載置された機器Eが低周波数の励磁を要求している場合には、高周波インバータ回路15の発振回路16に設けた第1及び第2切替回路41,42にハイ・レベルの第1切替信号SW1を送信する。
今、時刻t1において、機器Eが載置され、該機器Eから励磁要求信号RQ、機器認証信号ID、及び低周波数での励磁要求の種別信号が送信されると、システム制御部8は、直ちに、ハイ・レベルの第1切替信号SW1を送信し、第1切替回路41は、低周波用第1励磁同期信号Vs1aを選択状態にし、第2切替回路42は、低周波用第2励磁同期信号Vs2aを選択状態にする。そして、低周波用第1及び第2励磁同期信号Vs1a,Vs2aで第1及び第2パワートランジスタQ1,Q2が交互にオンオフされることにより1次コイルL1は連続励磁される。
そして、時刻t2において、機器Eが取り去られると、該機器Eから励磁要求信号RQ、機器認証信号ID、及び低周波数での励磁要求の種別信号が消失する。システム制御部8は、直ちに、第1実施形態と同様に、間欠励磁に移る。
このように、本実施形態は、第1実施形態の効果に加えて、機器Eが載置されてない間欠励磁のときには、低周波数で励磁動作可能であり、消費電力の低減を図ることができる。
(第4実施形態)
次に、第4実施形態について、図18に従って説明される。
図18は、各給電モジュールMの高周波インバータ回路15を示す電気回路を示す。
第1励磁同期信号発生回路17aは、駆動制御信号CTに応答して、図20に示すように、ロー・レベルの第2切替信号SW2と、連続用第1励磁同期信号Vs1cとを第3切替回路45に送信する。従って、第3切替回路45は、許可信号ENが送信されたとき、連続用第1励磁同期信号Vs1cを第1パワートランジスタQ1に送信する。因みに、第3切替回路45は、許可信号ENが送信されていないとき、間欠用第1励磁同期信号Vs1iを第1パワートランジスタQ1に送信する。
第2励磁同期信号発生回路17bは、駆動制御信号CTに応答して、図20に示すように、ロー・レベルの第3切替信号SW3と、連続用第2励磁同期信号Vs2cを第4切替回路46に送信する。従って、第4切替回路46は、許可信号ENが送信されたとき、連続用第2励磁同期信号Vs2cを第2パワートランジスタQ2に送信する。因みに、第4切替回路46は、許可信号ENが送信されていないとき、間欠用第2励磁同期信号Vs2iを第1パワートランジスタQ1に送信する。
まず、間欠用第1励磁同期信号Vs1iと間欠用第2励磁同期信号Vs2iとは、第1実施形態において間欠励磁されているときの第1オンオフ信号Vg1と第2オンオフ信号Vg2とにそれぞれ対応させている。つまり、間欠用第1励磁同期信号Vs1iの波形は、間欠ハイ信号Vstが送信されている時に送信される第1オンオフ信号Vg1の論理値と同じ論理値を有する第1励磁同期信号Vs1の波形と同じである。また、間欠用第2励磁同期信号Vs2iの波形は、間欠ハイ信号Vstが送信されている時に送信される第2オンオフ信号Vg2の論理値と同じ論理値を有する第2励磁同期信号Vs2の波形と同じである。
次に、第5実施形態について、図21に従って説明される。
上記した第4実施形態の給電装置1においては、連続用第1及び第2励磁同期信号Vs1c,Vs2cは、給電装置1の第1及び第2励磁同期信号発生回路17a,17bでそれぞれ生成した。本実施形態は、連続用第1及び第2励磁同期信号Vs1c,Vs2cが機器Eからの信号によって第1及び第2励磁同期信号発生回路17a,17bにて生成される点に特徴を有している。
図21は、第5実施形態の各給電モジュールMの電気回路図を示す。
このように、本実施形態は、機器Eによって要求される励磁周波数で励磁給電することから、機器Eに応じた高精度で高効率な給電制御が可能となる。
次に、第6の実施形態について、図24に従って説明される。
第1実施形態では、機器Eからの励磁要求信号RQが、給電モジュールMの信号受信アンテナAT1にて受信され、受信された励磁要求信号RQが励磁要求受信回路11に送信された。本実施形態は、機器Eからの励磁要求信号RQが給電モジュールMの1次コイルL1にて受信される点に特徴を有する。
図24は、第6実施形態の給電モジュールMと機器Eとの電気回路図を示す。
機器側励磁要求変調信号VL12は、図25に示すように、1次コイルL1の連続励磁に基づいて2次コイルL2に発生する電圧波形又は電流波形を、機器Eの負荷Zによって励磁要求信号で振幅変調することにより生成される。機器Eの負荷Zが変調を行う。そして、本実施形態では、機器側励磁要求変調信号VL12は、図25に示すように、一定期間交互に繰り返す大きい値の振幅値と小さな値の振幅値とを有する。
給電モジュールMの1次コイルL1は、機器側励磁要求変調信号VL12の電圧レベルに比例した電圧レベルを有する給電側励磁要求変調信号VL11を受信する。そして、受信された給電側励磁要求変調信号VL11は、1次コイルL1から励磁要求受信回路11aに送信される。
このように、本実施形態では、給電装置1に第1及び第2励磁同期信号Vs1,Vs2が設けられ、且つ機器Eからの機器側励磁要求変調信号VL12に従って、複数の1次コイルL1が互いに同期励磁するため、機器Eの回路が簡素化される。
次に、第7実施形態を図26に従って説明される。
本実施形態は、各給電モジュールMが機器Eとの間で情報の授受及び機器Eに対して微小電力供給を行うことができる点に特徴を有している。
図26において、給電モジュールMには、給電側送受信回路49が加えられている。給電側送受信回路49は、給電側アンテナAT5を介して、載置された機器Eに向かって各種信号を送信する。また、給電側送受信回路49は、励磁要求信号RQ及び機器認証信号ID以外の機器Eから送信される各種信号を、同給電側アンテナAT5を介して受信する。また、給電側送受信回路49は、給電側アンテナAT5を励磁することにより機器Eに微小電力の供給を行う。
尚、信号の授受、及び微小電力供給のために給電側アンテナAT5及び機器側アンテナAT6を用いたが、給電側アンテナAT5及び機器側アンテナAT6は、1次コイルL1、2次コイルL2,信号受信アンテナAT1、及び送受信アンテナAT3等で代用してもよい。
(第8実施形態)
次に、第8実施形態を図27に従って説明される。
尚、この休止時間tzの間は、第1及び第2トランスファーゲートが遮断信号に基づいて第1及び第2オンオフ信号Vg1,Vg2を遮断しているだけである。このため、給電装置1は、第1実施形態と同様に、図10に示す処理動作を継続して実行する。
次に、第9実施形態を図28に従って説明される。
本実施形態は、給電装置1に設けたれた複数の1次コイルL1が複数個の組みに区分され、その区分された組毎に間欠励磁され、時間が経過する毎に、間欠励磁される組の順番を示す励磁パターンを異ならせた点に特徴を有する。
図28において破線で示すように、載置面6がX方向に3分割にされ、Y方向に4分割される。これにより、12個の第1~第12分割エリアA1~A12が区画形成される。そして、第1~第12各分割エリアA1~A12には、それぞれ4個の1次コイルL1が含まれる。
例えば、第1分割エリアA1、第2分割エリアA2、…、…、第11分割エリアA11、第12分割エリアA12の順で、第1~第12分割エリアA1~A12の1次コイルL1が間欠励磁される。そして、第12分割エリアA12の間欠励磁が終わると、再び、第1分割エリアA1から間欠励磁を行い、このような順番を繰り返す。
例えば、上記した第1分割エリアA1、第2分割エリアA2、…、…、第12分割エリアA12の順の間欠励磁タイミングパターンは、第12分割エリアA12、第11分割エリアA11、…、…、第2分割エリアA2、第1分割エリアA1という反対の間欠励磁タイミングパターンに変更される。これは、所定の時間が経過する毎に、システム制御部8は、先に行っていた間欠励磁パターンとは異なる間欠励磁パターンを実行するようにしている。
(第10実施形態)
次に、第10実施形態を図29、図30に従って説明される。
図29に示すように、給電装置1は、室内50の床51の下、壁52の中、及び天井53の上に配置されている。
勿論、給電装置1を床51の下、壁52の中、及び天井53の上に配置することは、事前に取付工事の際に適宜の位置を選択し埋設させて、ユーザにより自由に変更できなくてもよい。
(第11実施形態)
次に、第11実施形態を図35に従って説明される。
(第12実施形態)
次に、第12実施形態を図37に従って説明される。
図37に示すように、機器Eに設けられた2次コイルL2は、コンデンサCzを並列に接続されて、給電モジュールM(1次コイルL1)の駆動周波数で共振する。これによって、負荷Zとの整合(マッチング)が容易にとれて2次コイルL2が共振し、簡単に、安全、安心、省エネルギで高効率な非接触給電システムが実現できる。尚、2次コイルL2は、コンデンサCzに直列に接続されて、給電モジュールMの駆動周波数で共振するようにしてもよい。
次に、第13実施形態を図38~図40に従って説明される。
前記各実施形態では、機器Eを給電装置1の載置面6に載置させた状態で、又は機器Eを第10実施形態のように給電装置1に近接させた状態で、機器Eが給電されていた。本実施形態は、給電装置1に対して所定の距離だけ機器Eを離間させるように配置して機器Eを給電させる点に特徴を有している。
なお、図40に示すように、壁52の最下端に沿って設けられた幅木62に収容配置された給電装置1に対して同給電装置1の上方に位置する壁52に、中継器70が設置される。そして、中継器70の上側の壁52に配置したスポット型の照明機器E1は、中継器70を介して給電装置1から給電を受けるようにしてもよい。
Claims (27)
- 機器と、前記機器に非接触で給電する給電装置とを有する非接触給電システムであって、
前記給電装置は、面状又は線状に設けられた複数の1次コイルと、複数の前記1次コイルにそれぞれ対応する複数の給電モジュールであって、各給電モジュールは、前記1次コイルの励磁を要求するための励磁要求信号を受信し、その受信した励磁要求信号に基づいて前記1次コイルを励磁する、前記複数の給電モジュールと、前記複数の前記給電モジュールを統括制御するシステム制御部とを備え、
前記機器は、2次コイルと、前記給電装置に前記励磁要求信号を送信する送信回路とを備え、
前記機器を給電装置上に配置した時、1以上の給電モジュールに対応する1次コイルを励磁させ、電磁誘導にて前記機器の2次コイルに2次電力を発生させ、該2次電力を前記機器の負荷に供給し、
前記システム制御部は、前記給電装置上に配置された前記機器から前記励磁要求信号を前記1以上の給電モジュールが受信したとき、その励磁要求信号を受信した1以上の給電モジュールに対して当該1次コイルを励磁させるための許可信号を送信する、非接触給電システム。 - 請求項1に記載の非接触給電システムにおいて、
前記複数の給電モジュールの各々は、
前記1次コイルを励磁する高周波インバータ回路と、
前記機器から前記励磁要求信号を受信し判別する受信回路と、
前記受信回路が前記励磁要求信号を受信したとき、前記高周波インバータ回路を駆動させるための駆動制御信号を生成する励磁制御回路と
を備える、非接触給電システム。 - 請求項1又は2に記載の非接触給電システムにおいて、
前記複数の給電モジュールの各々は、
前記機器から前記励磁要求信号を受信する信号受信アンテナを有し、
前記機器は、
前記送信回路に接続され、且つ前記励磁要求信号を送信する送受信アンテナを有し、
前記複数の信号受信アンテナの各々は、対応する前記1次コイルに沿って配置され、
前記送受信アンテナは、前記2次コイルに沿って配置され、
前記機器の前記2次コイルは、該前記2次コイルの直下にある1以上の1次コイルと対応している、非接触給電システム。 - 請求項2に記載の非接触給電システムにおいて、
前記複数の励磁制御回路の各々は、
前記受信回路が前記励磁要求信号を受信したとき、前記励磁要求信号を受信したことを示す信号を前記システム制御部に送信した後、前記システム制御部からの前記許可信号に応答して前記高周波インバータ回路に前記駆動制御信号を送信する、非接触給電システム。 - 請求項2又は4に記載の非接触給電システムにおいて、
前記複数の高周波インバータ回路の各々は、
1次コイルを励磁する発振回路と、
前記励磁制御回路からの前記駆動制御信号に応答して前記発振回路を駆動する同期信号発生回路と
を備えたことを特徴とする非接触給電システム。 - 請求項2、4、5のいずれか1に記載の非接触給電システムにおいて、
前記複数の給電モジュールの各々の前記受信回路は、
前記機器の前記送信回路から前記励磁要求信号を受信する励磁要求受信回路と、
前記機器の前記送信回路から機器認証信号を受信する機器認証受信回路と
を有し、
前記機器の前記送信回路は、
前記励磁要求信号と、自身の機器を認証する前記機器認証信号とを生成し、前記機器認証信号及び前記励磁要求信号を送信し、
システム制御部は、
前記励磁要求信号と前記機器認証信号とを前記受信回路が受信したとき、前記許可信号を1以上の励磁制御回路に送信し、前記励磁要求信号及び前記機器認証信号のいずれか一方が消失したとき、前記1以上の励磁制御回路への前記許可信号の送信を停止することを特徴とする非接触給電システム。 - 請求項2、4~6のいずれか1に記載の非接触給電システムにおいて、
前記複数の給電モジュールの各々は、前記1次コイルの近辺に設けられ、金属を検出して金属検出信号を生成する金属検出センサと、前記金属検出センサから金属検出信号を受信することにより金属の有無を判別する金属検出回路とを備え、
複数の前記金属検出回路の各々は、対応する金属検出センサから前記金属検出信号を受信したとき、前記駆動制御信号を消失させるために前記金属検出信号を対応する励磁制御回路に送信することを特徴とする非接触給電システム。 - 請求項1~7のいずれか1に記載の非接触給電システムにおいて、
前記複数の給電モジュールの各々は、前記機器が載置される前の待機状態にあるとき、前記1次コイルを間欠的に励磁させることにより前記1次コイルを待機させることを特徴とする非接触給電システム。 - 請求項8に記載の非接触給電システムにおいて、
前記複数の給電モジュールの各々は、対応する1次コイルの近辺に設けられ、且つ物体を検出して物体検出信号を生成する物体検出センサと、対応する物体検出センサから前記物体検出信号を受信し、前記物体検出信号に基づいて物体の有無を判別する物体検出回路とを備え、
複数の前記物体検出回路の各々は、対応する物体検出センサから前記物体検出信号を受信したとき、対応する1次コイルを間欠的に励磁させて待機させることを特徴とする非接触給電システム。 - 請求項9に記載の非接触給電システムにおいて、
複数の前記物体検出センサの各々は、光を含む電磁波を出射し、出射された電磁波の反射波の有無によって物体を検出することを特徴とする非接触給電システム。 - 請求項8に記載の非接触給電システムにおいて、
前記給電装置に設けられた複数の前記1次コイルを複数個の組みに区分し、その区分した組毎に順番に間欠励磁させ、時間が経過する毎に間欠励磁される組の順番を示す励磁パターンを異ならせたことを特徴とする非接触給電システム。 - 請求項1~11のいずれか1に記載の非接触給電システムにおいて、
前記複数の給電モジュールの各々は、対応する1次コイルを給電するための励磁を開始した場合、予め定めた時間毎に一定時間の励磁休止時間を設けて待機することを特徴とする非接触給電システム。 - 請求項5~12のいずれか1に記載の非接触給電システムにおいて、
複数の前記高周波インバータ回路の各々は、第1及び第2パワートランジスタ、第1及び第2アンド回路を含み、
前記第1及び第2パワートランジスタの制御端子は、それぞれ第1及び第2アンド回路の出力端子に接続され、
前記第1及び第2アンド回路の第1の入力端子には、前記第1及び第2パワートランジスタを交互にオンオフさせるための相補性の第1及び第2励磁同期信号がそれぞれ受信され、
前記第1及び第2アンド回路の第2の入力端子には、前記第1及び第2励磁同期信号をそれぞれ有効もしくは無効を決定するインバータ制御信号がそれぞれ受信されることを特徴とする非接触給電システム。 - 請求項13に記載の非接触給電システムにおいて、
前記第1及び第2アンド回路の第1の入力端子には、それぞれ第1及び第2切替回路の出力端子が接続され、
前記第1及び第2切替回路の第1の入力端子には、前記第1及び第2パワートランジスタを低周波で交互にオンオフさせるための相補性の低周波用第1及び第2励磁同期信号がそれぞれ受信され、
前記第1及び第2切替回路の第2の入力端子には、前記第1及び第2パワートランジスタを高周波で交互にオンオフさせる相補性の高周波用第1及び第2励磁同期信号がそれぞれ受信され、
前記第1及び第2切替回路は、前記機器からの切り替え情報に基づいて、第1及び第2アンド回路に送信する第1及び第2励磁同期信号を、低周波用と高周波用のいずれか一方に切り替えることを特徴とする非接触給電システム。 - 請求項5~12のいずれか1に記載の非接触給電システムにおいて、
前記複数の給電モジュールの各々の前記高周波インバータ回路は、第1及び第2パワートランジスタと第3及び第4切替回路とを含み、
前記第1及び第2パワートランジスタの制御端子は、それぞれ前記第3及び第4切替回路の出力端子に接続され、
前記第3及び第4切替回路の第1の入力端子には、前記一対の第1及び第2パワートランジスタを間欠的で交互にオンオフさせるための相補性の間欠用第1及び第2励磁同期信号がそれぞれ受信され、
前記第3及び第4切替回路の第2の入力端子は、前記一対の第1及び第2パワートランジスタを連続的で交互にオンオフさせるための相補性の連続用第1及び第2励磁同期信号がそれぞれ受信され、
前記第3及び第4切替回路は、前記機器の載置の有無に基づいて、第1及び第2パワートランジスタの制御端子に送信する第1及び第2励磁同期信号を、間欠用と連続用のいずれかに切り替えることを特徴とする非接触給電システム。 - 請求項15に記載の非接触給電システムにおいて、
前記機器の送信回路は、自身の2次コイルL2が給電励磁される際の励磁周期を決定する、前記励磁要求信号を振幅変調した励磁要求変調信号を送信し、
前記複数の給電モジュールの各々の励磁要求受信回路は、前記機器から励磁変調要求信号を受信し、該励磁変調要求信号を検波復調することにより、前記励磁変調要求信号の振幅値が大きい期間では前記励磁変調要求信号をハイ・レベルの論理信号に波形整形し、前記励磁変調要求信号の振幅値が小さい期間では前記励磁変調要求信号をロー・レベルの論理信号に波形整形し、
前記複数の給電モジュールの各々の高周波インバータ回路は、前記論理信号に基づいて、前記連続用第1及び第2励磁同期信号を生成することを特徴とする非接触給電システム。 - 請求項13に記載の非接触給電システムにおいて、
前記機器からの前記励磁要求信号は、前記2次コイルに発生する電圧波形又は電流波形を同励磁要求信号で振幅変調することにより生成された機器側励磁要求変調信号であり、その機器側励磁要求変調信号は、前記1次コイルに受信され、
前記給電モジュールの励磁要求受信回路は、前記1次コイルで受信した前記機器からの機器側励磁要求変調信号を受信し、該機器側励磁要求変調信号を検波復調することにより、前記機器側励磁要求変調信号の振幅値が大きい期間では前記機器側励磁要求変調信号をハイ・レベルの論理信号に波形整形し、前記機器側励磁要求変調信号の振幅値が小さい期間では前記機器側励磁要求変調信号をロー・レベルの論理信号に波形整形し、
その論理信号の論理値と同じ論理値を有する前記インバータ制御信号は、高周波インバータ回路の第1及び第2アンド回路の第2の入力端子に送信されることを特徴とする非接触給電システム。 - 請求項1~17のいずれか1に記載の非接触給電システムにおいて、
前記複数の給電モジュールの各々は、前記機器との間で給電側送受信アンテナを介して各種信号を送受信し、且つ前記機器の機器側送受信アンテナに微小電力を供給する給電側送受信回路を備え、
前記機器は、前記1以上の給電モジュールとの間で前記機器側送受信アンテナを介して各種信号を送受信し、且つ前記給電側送受信回路による前記給電側送受信アンテナの励磁にて前記機器側送受信アンテナに発生する微小電力を受信する機器側送受信回路を備えることを特徴とする非接触給電システム。 - 請求項1~13のいずれか1に記載の非接触給電システムおいて、
前記励磁要求信号は、前記1次コイルの励磁周波数とは異なる周波数に変調されることを特徴とする非接触給電システム。 - 請求項1~19のいずれか1に記載の非接触給電システムにおいて、
前記複数の給電モジュールは、複数の1次コイルを励磁駆動する際、前記複数の1次コイルを同位相で励磁することを特徴とする非接触給電システム。 - 請求項1~20のいずれか1に記載の非接触給電システムにおいて、
前記給電装置を連結することにより単一の給電システムを構成することを特徴とする非接触給電システム。 - 請求項1に記載の非接触給電システムにおいて、
前記給電装置は、床、壁、及び天井の少なくとも1つに着脱可能で配置されることにより、配置位置を変更可能であることを特徴とする非接触給電システム。 - 請求項22に記載の非接触給電システムにおいて、
前記給電装置を配置する前記床、前記壁、又は前記天井は、ユーザが前記給電装置を自由にレイアウトできる木枠にて構成され、その木枠内に1つ若しくは複数個の前記給電装置が配置可能であることを特徴とする非接触給電システム。 - 請求項22に記載の非接触給電システムにおいて、
前記床、前記壁、又は前記天井に設けられた幅木に、前記給電装置を配置したことを特徴とする非接触給電システム。 - 請求項24に記載の非接触給電システムにおいて、
前記幅木がダクト形状を有し、1以上の前記機器が、前記幅木上を自由にスライドできることを特徴とする非接触給電システム。 - 請求項1に記載の非接触給電システムにおいて、
前記機器は、前記2次コイルと並列又は直列に接続されたコンデンサを含み、2次コイルとコンデンサとは、前記給電モジュールの駆動周波数で共振することを特徴とする非接触給電システム。 - 請求項1~26のいずれか1に記載の非接触給電システムにおいて、
前記給電装置と前記機器との間に配置された1以上の中継器を備え、前記中継器は、互いに並列接続されたコンデンサ及び中間コイルを含み、コンデンサ及び中間コイルは、前記給電装置の駆動周波数で共振するように設定されることを特徴とする非接触給電システム。
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- 2011-03-16 EP EP11762586.3A patent/EP2555378B1/en active Active
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US9275790B2 (en) | 2011-08-01 | 2016-03-01 | Panasonic Intellectual Property Management Co., Ltd. | Contactless power supplying device |
DE102012020564B4 (de) | 2011-08-01 | 2023-06-29 | Panasonic Intellectual Property Management Co., Ltd. | Verfahren zur Kontrolle kontaktloser Leistungsversorgungsvorrichtung und kontaktlose Leistungsversorgungsvorrichtung |
DE102012020670B4 (de) | 2011-08-25 | 2017-03-30 | Panasonic Intellectual Property Management Co., Ltd. | Verfahren zum Detektieren eines metallischen Fremdkörpers in einem kontaktlosen Leistungsversorgungssystem, kontaktlose Leistungsversorgungsvorrichtung, Leistungsempfangsvorrichtung und kontaktloses Leistungsversorgungssystem |
US9177716B2 (en) | 2011-08-25 | 2015-11-03 | Panasonic Intellectual Property Management Co., Ltd. | Method for detecting metal foreign object in contactless power supply system, contactless power supply device, power reception device, and contactless power supply system |
US9755699B2 (en) | 2012-02-29 | 2017-09-05 | The Chugoku Electric Power Co., Inc. | Wireless power transfer system that performs power transfer from determined power transmission device to power receiving device, power transmission device, power receiving device, and control method of wireless power transfer system |
EP2822146A4 (en) * | 2012-02-29 | 2016-01-06 | Chugoku Electric Power | CONTACTLESS POWER SUPPLY SYSTEM, POWER SUPPLY APPARATUS, ELECTRICITY RECEPTION APPARATUS, AND METHOD FOR CONTROLLING CONTACTLESS POWER SUPPLY SYSTEM |
US9293251B2 (en) | 2012-10-11 | 2016-03-22 | Panasonic Intellectual Property Management Co., Ltd. | Method of exciting primary coils in contactless power supplying device and contactless power supplying device |
KR101372970B1 (ko) | 2012-10-11 | 2014-03-11 | 파나소닉 주식회사 | 비접촉 급전 장치의 금속 이물질 검출 방법, 비접촉 급전 장치, 수전 장치 및 비접촉 급전 시스템 |
DE102012020364A1 (de) * | 2012-10-17 | 2014-04-17 | Panasonic Corporation | Verfahren zum Anregen von Primärspulen in einer kontaktlosen Leistungsversorgungsvorrichtung und kontaktlose Leistungsversorgungsvorrichtung |
DE102012020565A1 (de) * | 2012-10-19 | 2014-04-24 | Panasonic Corporation | Kontaktlose Leistungsversorgungsvorrichtung |
DE102012020565B4 (de) | 2012-10-19 | 2022-03-03 | Panasonic Intellectual Property Management Co., Ltd. | Kontaktlose Leistungsversorgungsvorrichtung |
WO2014069239A1 (ja) * | 2012-10-30 | 2014-05-08 | シャープ株式会社 | 給電装置およびワイヤレス給電システム |
CN107534319A (zh) * | 2015-04-06 | 2018-01-02 | 松下知识产权经营株式会社 | 非接触供电装置的送电装置 |
JPWO2016163091A1 (ja) * | 2015-04-06 | 2018-01-25 | パナソニックIpマネジメント株式会社 | 非接触給電装置の送電装置 |
CN107534319B (zh) * | 2015-04-06 | 2021-09-21 | 松下知识产权经营株式会社 | 非接触供电装置的送电装置 |
US11631997B2 (en) | 2015-04-06 | 2023-04-18 | Panasonic Intellectual Property Management Co., Ltd. | Power transmission device for noncontact power supply device |
Also Published As
Publication number | Publication date |
---|---|
KR20120137382A (ko) | 2012-12-20 |
EP2555378B1 (en) | 2016-07-06 |
CN102835003B (zh) | 2015-05-06 |
EP2555378A1 (en) | 2013-02-06 |
TWI477022B (zh) | 2015-03-11 |
JP2011211874A (ja) | 2011-10-20 |
CN102835003A (zh) | 2012-12-19 |
US9203244B2 (en) | 2015-12-01 |
US20130015705A1 (en) | 2013-01-17 |
KR101423854B1 (ko) | 2014-07-25 |
TW201218570A (en) | 2012-05-01 |
JP5478326B2 (ja) | 2014-04-23 |
EP2555378A4 (en) | 2013-11-27 |
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