JP2018161045A - Power supply system, power-receiving device, and non-contact power supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively provide a power supply system, a power-receiving device and a non-contact power supply system in the atmosphere, in a substance of which the transmission loss of an electromagnetic wave signal is larger than that in the atmosphere, in fresh water of which the salt concentration is 0 to 10% or in seawater, or in a combination thereof.SOLUTION: In a non-contact power supply device and a non-contact power supply system, a power-feeding coil and a power-receiving coil are put in a non-saturated state, the power-feeding coil and the power-receiving coil are put in a non-resonant state or in a non-resonant state close to a resonant state, a load Q value thereof is made 50 or less, and a voltage fluctuation rate at load is made 50% or less, otherwise a combination of the above arrangements is embodied. In the power-feeding coil, a magnetic excitation current is driven by an AC electrical power source with a frequency of 50 Hz to over 41 MHz, whereby the power-feeding coil is caused to radiate a high-output fluctuating magnetic field. The radiated fluctuating magnetic field enables non-contact power supply in a near-distance, and enables magnetic wave communications in a middle distance as well.SELECTED DRAWING: Figure 1

Description

In the atmosphere, the propagation loss of the electromagnetic wave signal is larger than the propagation loss in the atmosphere, the fresh water or the seawater having a salt concentration of 0% to 10%, or the combination thereof. In order to realize a non-contact power feeding device and a non-contact power feeding system that are inductively coupled by a varying magnetic field based on Faraday's law of electromagnetic induction, including between short distance and medium distance.

Conventionally, a non-contact power transmission device using an air-core coil as a power supply coil has been proposed. (For example, Patent Documents 1 to 4)
JP 2012-151208 A Patent No. 5437650 JP 2012-143106 A JP-A-2006-123187

According to the conventional “resonance coil holding member, resonance coil unit, and non-contact power transmission device” described in Patent Document 1, “paragraph [0070] resonance coil 52 includes, for example, as shown in FIG. A copper wire having a diameter of 5 mm is wound in a flat shape (spiral shape) a plurality of times (n times), the inner diameter D1 is 450 mm, the outer diameter D2 is 600 mm, and an air-core coil.
However, in the method of Patent Document 1, since the air-core coil is resonated at a high frequency, an electromagnetic wave signal is radiated. Therefore, power supply efficiency is reduced even in the atmosphere, non-contact power supply is inhibited in seawater, and electromagnetic wave communication is performed. There is a problem that countermeasures against disturbances are necessary.

According to the conventional “contactless power feeding device” described in Patent Document 2, “paragraph [0006] and a resonance coil constituting a resonance circuit is disposed in the magnetic path of the air gap.
The resonant circuit is independent of the primary side power supply circuit and the secondary load side circuit, and the resonant coil supplies excitation reactive power to the magnetic path of the air gap. It is said that.
However, in the method of Patent Document 2, since a high-voltage resonance circuit is provided independently and an electromagnetic wave signal is radiated, power supply efficiency is lowered even in the atmosphere, and non-contact power supply is inhibited in seawater. In addition, there is a problem that countermeasures against interference with electromagnetic wave communication are necessary.

According to the conventional “magnetic resonance type non-contact power feeding device” described in Patent Document 3, “paragraph [solution] The non-contact power feeding device 15 includes a power transmission coil 3 and a parallel capacitor for the power transmission side circuit 6. 11 is arranged to form a parallel resonant circuit, and the circuit portion on the high frequency power supply 9 side and the circuit portion on the parallel capacitor 11 or power transmission coil 3 side are connected by electric field coupling by the capacitors 21 and 22.
It is said that.
However, in the method of Patent Document 3, since the power transmission coil 3 and the parallel capacitor 11 are arranged to form a parallel resonance circuit and are connected by electric field coupling (coupling capacitor) 22, a high resonance voltage is generated. Since electromagnetic wave signals are radiated, there are problems in that power supply efficiency is reduced even in the atmosphere, non-contact power supply in seawater is obstructed, and countermeasures against interference with electromagnetic wave communication are necessary.

According to the conventional “wireless power supply device” described in Patent Document 4, “the wireless power transmission device 101 is a coil of power supply means, either directly or via a transformer 33, from an AC power source having an arbitrary frequency including a commercial frequency. 11a is driven, and a non-resonant state coil is used for both the coil of the power supply unit and the coil 12a of the power reception unit, and simple adjustment / control unit is used, and wireless power transmission is performed with high efficiency. Has been.
However, the method of Patent Document 4 has a problem of “providing a wireless power transmission device that is inductively coupled by a variable magnetic field at a low cost”, and has not been promoted as a wireless power transmission system. There is a problem that is limited to applications.

The present invention has been made to solve the above-described problems. The power feeding coil and / or the power receiving coil are brought into a non-saturated state, the power feeding coil and / or the power receiving coil are brought into a non-resonant state, and the power feeding coil and / or The power receiving coil is in a non-resonant state close to the resonant state, the load Q value of the power feeding coil and / or the power receiving coil is 50 or less, the voltage fluctuation rate during load is 50% or less, and the resonance frequency is lower than the frequency of the AC power supply to be driven A single line, a double line, a parallel two line, a square coil, a circular coil, or a combination of these, radiating a high-power variable magnetic field from the feeding coil, and The present invention relates to a non-contact power feeding device that uses an electromotive force generated by inductive coupling of a magnetic field of output with a power receiving coil as an output power source. Suppresses signal radiation, has high power supply efficiency, and has a high propagation efficiency in the atmosphere, in which electromagnetic wave signal propagation loss is large compared to propagation loss in the atmosphere, fresh water or seawater with a salinity of 0% to 10% In the middle or a combination of these, the non-contact power feeding device and the non-contact power feeding system that inductively couples with a varying magnetic field based on Faraday's law of electromagnetic induction, including between short distances and medium distances, are provided at low cost. For the purpose.

  In the non-contact power feeding device according to the present invention, the power feeding coil and the power receiving coil are desaturated, the power feeding coil and / or the power receiving coil are brought into a non-resonant state, and the power feeding coil and / or the power receiving coil are brought into a non-resonant state close to a resonance state. The load Q value of the feeding coil and / or the receiving coil is set to 50 or less, the voltage fluctuation rate during load is set to 50% or less, and the resonance frequency is lower than the frequency of the AC power source to be driven. A parallel two-line, a circular coil, a square coil, or a combination thereof, and a relatively low frequency AC power source with a frequency exceeding 50 Hz to 41 MHz is driven to the power supply coil. A high output variable magnetic field is radiated, and an electromotive force induced in the receiving coil by the high output variable magnetic field is large. By using the source output, radiation of electromagnetic wave signals is suppressed, power transmission efficiency is high, and in the air, the propagation concentration of electromagnetic wave signals is large compared to the propagation loss in air, and the salinity concentration is 0%. To 10% of fresh water or sea water, or a combination of these, including non-contact power feeding in a short distance to magnetic wave communication in a middle distance, inductively coupled by a variable magnetic field And a non-contact electric power feeding system is realizable.

  Here, the power distribution means directly supplies the AC power to the non-saturated power supply coil, converts the frequency to drive, drives through the transformer, and supplies the phase adjustment means connected in series. The phase adjustment means connected in parallel and supplied, the phase adjustment means including the reactor and the capacitor connected in series, the phase adjustment means including the reactor and the capacitor connected in parallel, and supplied, Drive by connecting a reactor to the power input terminal of the AC power supply, or drive them in combination, and radiate a high-output fluctuating magnetic field having a frequency exceeding 50 Hz to 41 MHz from the feeding coil. The electromotive force induced in the receiving coil is directly output, output via a transformer, output by connecting a phase adjusting means in series, converted and output, and converted to a DC voltage. And it outputs the conversion, or a combination thereof, to achieve a non-contact paper feed unit and the non-contact power feeding system capable of rapid charging against accumulator.

In addition, the feeding coil is configured by a single line, a multiple line, or two parallel lines, and the feeding coil and the receiving coil are in a non-resonant state close to a resonance state, thereby providing non-contact power feeding to a moving vehicle that is running. It is possible to enable rapid power feeding in a non-contact manner to a plurality of vehicles parked in parallel or in parallel parking.
Also, by making the power supply coil and the power receiving coil in a non-resonant state close to a resonance state, broadband transmission between the coils is possible, and it can be shared as a magnetic wave communication antenna, and the power supply coil and the power receiving coil In the atmosphere, based on the digital information, the power distribution means receives an AC power supply start / stop request from the EV vehicle, and starts the AC power supply based on the request. In the water or in seawater, the power supply support means or the power supply support platform receives a power supply start / stop request from the submergence means, controls the submergence means, controls the start / stop of the non-contact power supply, Alternatively, a combination of these can be performed.

  A specific configuration of a power feeding device according to the present invention is a power feeding device for supplying power to a power receiving device using electromagnetic induction, and storing the power in a power storage unit included in the power receiving device, the power feeding coil, An AC power supply for causing an exciting current to flow through the feeding coil and a phase adjusting unit for adjusting the phase of the exciting current, the feeding coil and the phase adjusting unit being coupled in parallel and in series, The inductive reactance of the feeding coil, the capacitive reactance of the phase adjusting means connected in parallel, and the capacitive reactance of stray capacitance existing around the feeding coil are in a non-resonant state close to a resonance state, The inductive reactance of the feeding coil and the capacitive reactance of the phase adjusting means connected in series are in a non-resonant state close to a resonance state. That.

In addition, a specific configuration of the power receiving device according to the present invention is a power receiving device to which electric power is supplied from the power feeding device using electromagnetic induction, and stores the power received by the power receiving coil and the power receiving coil. Power storage means.
In particular, it comprises phase adjusting means coupled in series with the power receiving coil, and the capacitive reactance of the phase adjusting means coupled in series with the power receiving coil is substantially the same as the inductive reactance of the power receiving coil. It is what.

Furthermore, the non-contact power feeding system according to the present invention includes the above power feeding device and the above power receiving device.

The non-contact power feeding device and the non-contact power feeding system of the present invention are such that the power feeding coil and the power receiving coil are horizontally opposed, the power feeding coil and the power receiving coil are in a non-saturated state, and the power feeding coil and / or the power receiving coil are in a non-resonant state. The feeding coil and / or the receiving coil are brought into a non-resonant state close to the resonance state, the load Q value of the feeding coil and / or the receiving coil is set to 50 or less, the voltage fluctuation rate during loading is set to 50% or less, and the feeding coil is a single wire having a long span. High efficiency by radiating a high output variable magnetic field having a frequency exceeding 50 Hz to 41 MHz from the power supply coil by using a path, a double line, two parallel lines, a rectangular coil, a circular coil, or a combination thereof. In addition, the propagation loss of electromagnetic wave signals in the atmosphere is large compared to the propagation loss in the atmosphere. Fluctuations, including contactless power supply over short distances to magnetic wave communication over medium distances, in fresh water or seawater with a salinity of 0% to 10%, or a combination of these There is an advantage that a non-contact power supply apparatus and a non-contact power supply system inductively coupled by a magnetic field can be realized at low cost.

The block diagram of the non-contact electric power feeder in the 1st Embodiment of this invention The other block diagram of the non-contact electric power feeder in the 1st Embodiment of this invention The other block diagram of the non-contact electric power feeder in the 1st Embodiment of this invention The other block diagram of the non-contact electric power feeder in the 1st Embodiment of this invention Sectional drawing of the coil in the 1st Embodiment of this invention The block diagram of the non-contact electric power feeding system in the 2nd Embodiment of this invention The other block diagram of the non-contact electric power feeding system in the 2nd Embodiment of this invention

  As shown in FIG. 1 to FIG. 7, in the atmosphere, in a substance in which the propagation loss of electromagnetic wave signals is larger than the propagation loss in the atmosphere, in fresh water or seawater with a salinity of 0% to 10%, or Among these combinations, in the non-contact power feeding device and the non-contact power feeding system based on Faraday's law of electromagnetic induction, the non-contact power feeding device includes at least a power distribution unit and a power reception unit, and the power distribution unit At least a power supply coil, the power supply coil being in a non-saturated state, in a non-resonant state, in a non-resonant state close to the resonance state, having a load Q value of 50 or less, and a voltage fluctuation rate during load Is a resonance frequency lower than the frequency of the driving AC power source, is a single line, is a double line, is a parallel two line, is a rectangular coil, is a circular coil, The power receiving means has at least a power receiving coil, the power receiving coil is in a non-saturated state, in a non-resonant state, and close to a resonance state. A load Q value of 50 or less, a voltage fluctuation rate under load of 50% or less, a resonance frequency lower than the frequency of the driving AC power source, a rectangular coil, a circular coil, A wide bandwidth, or a combination of these,

  The power feeding coil and the power receiving coil face each other in the horizontal direction, face in the vertical direction, or face each other in a combination thereof, and the power distribution means directly drives an AC power source exceeding 50 to 41 MHz to the power feeding coil. Drive by converting the frequency, drive by connecting the transformer, drive by connecting the phase adjustment means in series, drive by connecting the phase adjustment means in parallel, and connect the phase adjustment means in series and parallel The phase adjusting means including the reactor and the capacitor is connected in series and driven, and the phase adjusting means including the reactor and the capacitor is connected in parallel to be driven, and the reactor is connected to the power input terminal of the AC power source. Connect and drive, connect and drive power supply control means, connect and drive power supply means, or drive them in combination to release a high-output variable magnetic field from the power supply coil. The power receiving means directly outputs the electromotive force induced in the power receiving coil by the high-power fluctuating magnetic field radiated from the power feeding coil, output via the impedance conversion means, and output via the transformer, Phase adjustment means connected in series and output, phase adjustment means connected in parallel and output, phase adjustment means connected in series and output, power reception control means connected and output, frequency means Via the rectifying means, converted into a DC voltage and output, connected to the power storage means for output, or a combination thereof.

Further, as shown in FIGS. 1 to 7, the feeding coil is an air core that does not saturate the magnetic flux density generated by the supplied AC power supply, has a structure that does not saturate, has a structure that does not saturate, and has an area of the coil. The magnetic flux density is substantially uniform and increases in the direction of the power receiving coil, or a combination thereof.
Further, as shown in FIGS. 1 to 7, the inductive reactance of the feeding coil, the capacitive reactance of the phase adjusting means, and the capacitive reactance of stray capacitance existing around the feeding coil are non-resonant. A non-resonant state close to the resonance state, a load Q value of 50 or less, a voltage fluctuation rate during load of 50% or less, and a resonance frequency lower than the frequency of the driving AC power source, or these It is a combination.

Further, as shown in FIGS. 1 to 7, the power receiving coil is an air core that does not saturate the magnetic flux density inductively coupled with the fluctuating magnetic field radiated from the power feeding coil, has a configuration that does not saturate, and has a structure that does not saturate. Yes, the electromotive force is almost uniform within the area of the coil, or a combination thereof.
Further, as shown in FIGS. 1 to 7, the inductive reactance of the receiving coil, the capacitive reactance of the phase adjusting unit, and the capacitive reactance of stray capacitance existing around the receiving coil are non-resonant. A non-resonant state close to the resonance state, a load Q value of 50 or less, a voltage fluctuation rate during load of 50% or less, a resonance frequency lower than the frequency of the induced electromotive force, or these It is a combination.

Further, as shown in FIGS. 1 to 7, a series combined reactance value composed of the feeding coil, phase adjusting means and stray capacitance, and a series combined reactance value consisting of the receiving coil, phase adjusting means and stray capacitance, Either one or both are smaller than the series resistance value including the internal resistance of the power storage means.
Further, as shown in FIGS. 1 to 7, the feeding coil is formed by stacking a plurality of insulated tape-like flat conductors or flat conductors, is composed of a single line, is composed of multiple lines, and is parallel. Consists of two lines, is composed of a square coil, is composed of no more than two turns, is air-centered, and the thickness of one of the flat conductors or flat conductors is within the skin thickness. It is the thickness of the stacked thin plates, it has a dielectric with high dielectric constant within the area, has a dielectric with high dielectric constant outside the area, and the whole is sealed in a heat-resistant and heat-conductive resin molded product. The whole is impregnated, arranged in a line, arranged in a plane, accommodated in a case of a highly conductive material except for one side, unitized in a transportable length, or a combination thereof.

  Also, as shown in FIG. 1 to FIG. 7, the power receiving coil is formed by stacking a plurality of insulated tape-like flat conductors or flat conductors, is formed of a rectangular coil, and is formed in a loop shape. Constructed in a spiral shape, constructed in a flatwise volume, composed of solenoid windings, composed of multiple turns, air-core, and the thickness of one of the flat conductors or flat conductors is within the skin thickness , Having a dielectric with a high dielectric constant within the area, having a dielectric with a high dielectric constant outside the area, encapsulating the whole in a heat-resistant, good heat conductive resin molded product, impregnating the whole with an insulator, Is housed in a case of a good conductive material, and the whole is unitized, or a combination thereof.

Further, as shown in FIGS. 1 to 7, the width of the flat conductors constituting the parallel two lines is a value obtained by subtracting 1000 times or less of the insulation distance from the interval between the parallel two lines.
1 to 7, the AC power source is a constant voltage series resonance inverter, a constant current parallel resonance inverter, a constant voltage series / parallel resonance inverter, and a half-bridge inverter. It is a full-bridge inverter, has an output impedance lower than the load impedance, can supply an inrush current when the power is turned on to the phase adjustment means in which a reactor and a capacitor are connected in series, and can perform constant amplitude digital modulation, Or a combination of these.

Moreover, as shown in FIGS. 1 to 7, the electromotive force induced in the power receiving coil depends on the voltage of the AC power source supplied to the power feeding coil, depends on the excitation current supplied to the power feeding coil, Depends on the shape of the feeding coil, depends on the inductive reactance of the feeding coil, depends on the distance between the feeding coil and the receiving coil, depends on the number of turns of the feeding coil, and depends on the number of turns of the receiving coil Depends on the winding ratio of the feeding coil and the receiving coil, depends on the area of the feeding coil, depends on the area of the receiving coil, depends on the magnetic permeability of the magnetic body of the feeding coil, It depends on the magnetic permeability of the magnetic body of the power receiving coil, or depends on a combination thereof.
Further, as shown in FIGS. 1 to 7, an electromotive force induced in the power receiving coil is connected in series with the phase adjusting unit, connected in parallel with the phase adjusting unit, and without going through the phase adjusting unit. Connected, connected to rectifying means, connected to power storage means, connected at a load Q value of 50 or less, connected at a load voltage fluctuation rate of 50% or less, connected to impedance conversion means, or a combination thereof. Connected.

Also, as shown in FIGS. 1 to 7, the charging current of the power storage means is the impedance of the power receiving coil, the impedance of the phase adjusting means, the impedance of the rectifying means, the impedance of the power storage means, and the terminals of the power storage means. It is limited by the voltage or a combination thereof, and the load power factor is within a specified value with respect to the induced electromotive force.
1 to 7, the power storage means is a lithium ion battery, a large capacity capacitor, an electric double layer capacitor, a lithium ion capacitor, and a reactance value of the power receiving coil. It has a larger internal resistance value, or a combination thereof, and enables rapid charging with a large current.

Also, as shown in FIGS. 1 to 7, the feeding coil is crossed at a predetermined interval, arranged in a mesh shape, and configured to suppress radiation of a varying magnetic field to a remote area, The crossing point is detected and the distance is measured, the deviation from the center of the coil is detected, and the traveling direction is controlled, or a combination thereof.
Further, as shown in FIGS. 1 to 7, the feeding coil is constituted by a flat conductor, and the flat conductor and a high dielectric constant insulator are overlapped in a sandwich shape to form a flatwise winding. It is impregnated and waterproofed, the wide side of the flat conductor is wound around a drum in a horizontal direction, unwound from the drum and installed on the ground, and the wide side of the flat conductor is horizontally oriented by the vehicle The unit structure has a length that can be transported, and the wide side of the flat conductor is installed in a horizontal direction with respect to the ground, or a combination thereof is used to make the construction cost economical.

In addition, as shown in FIGS. 1 to 7, the feeding coil also serves as a power transmission line, serves as a distribution line, is buried underground, serves as an indoor wiring, is a single line, and is a double track. It is a road, two parallel tracks, a circular coil, a square coil, a flat plate coil, installed on the floor, installed on the ceiling, installed on the wall, installed on the desk, Or it is a combination thereof, and the power receiving coil is inductively coupled with the power feeding coil to receive non-contact power feeding.
Also, as shown in FIGS. 1 to 7, the area of either the feeding coil or the receiving coil is made larger than the area of the other coil, and the long side of either the feeding coil or the receiving coil is set to the other side. Aligning the feeding coil and the receiving coil by making it larger than the long side of the coil and making the short side of either the feeding coil or the receiving coil wider than the short side of the other coil, or combining them To make it easier.
In addition, as shown in FIGS. 1 to 7, a plurality of sets of the feeding coils are provided in the feeding area to the moving body, and a plurality of sets of the feeding coils are provided along the feeding area to the moving body, or These combinations are provided, and at least one of the plurality of sets of feeding coils and the power receiving coil continue inductive coupling.

Also, as shown in FIGS. 1 to 7, when the power supply coil is installed, a vortex is formed on the back surface of the power supply coil in order to suppress a decrease in power supply efficiency due to a structure existing on the back surface of the power supply coil. Install a conductor with less current loss, install a magnetic material with a high saturation magnetic flux density, install a material that reflects a fluctuating magnetic field, or install a combination of these.
Further, as shown in FIGS. 1 to 7, when the power receiving coil is installed, a vortex is formed on the back surface of the power receiving coil in order to suppress a decrease in power supply efficiency due to a structure existing on the back surface of the power receiving coil. Install a conductor with less current loss, install a magnetic material with a high saturation magnetic flux density, install a material that reflects a fluctuating magnetic field, or install a combination of these.

Further, as shown in FIGS. 1 to 7, the power distribution means connects a plurality of feeding coils in parallel, connects the plurality of feeding coils in series, and connects the AC power supply in common. A phase or multi-phase AC power supply is connected, the phase adjusting means is provided in common and connected, or a combination thereof expands the power supply service area and simultaneously increases the number of power receiving coils that can supply power.
Further, as shown in FIGS. 1 to 7, the power distribution means controls the start / stop of the AC power supply to the corresponding power supply coil, transmits / receives digital information to / from the power receiving means, and billing information to the power receiving means The charging information is transmitted to the center server, the voltage of the AC power supply is controlled, the overvoltage is protected, the supply current is controlled, the overcurrent is suppressed, or a combination thereof is performed.
Further, as shown in FIGS. 1 to 7, the power receiving means transmits / receives digital information to / from the power distribution means, transmits a power supply start / stop request, and controls the start / stop of the induced electromotive force. Control the output voltage, protect the overvoltage, control the output current, suppress the overcurrent, send the billing information, collect the billing information, or combine them.

Further, as shown in FIGS. 1 to 7, the feeding coil is in a non-resonant state or a non-resonant state close to a resonance state with the phase adjusting means including the distributed capacitance and stray capacitance, and the power receiving coil is in the distribution state. Phase adjustment means including capacitance and stray capacitance is in a non-resonant state or in a non-resonant state close to the resonance state, and either or both of the feeding coil and the receiving coil are shared by magnetic wave communication and non-contact feeding One or both of the feeding coil and the receiving coil are waterproofed and immersed in water or seawater, or a combination of these enables magnetic wave communication and non-contact power feeding.
Further, as shown in FIGS. 1 to 7, the frequency of the AC power source is a frequency band in which one or both of the feeding coil and the receiving coil can be operated in a non-resonant state, and the frequency is 30 kHz or less. It is a band, a frequency band assigned to high-frequency equipment, a frequency band assigned to an ISM band, or a combination thereof, either or both of magnetic wave communication and high-power non-contact power feeding Is possible.

Further, as shown in FIGS. 1 to 7 , digital information is transmitted and received between each other using the broadband transmission characteristics between the feeding coil and the receiving coil, and the digital information is exchanged between each other. Measure the distance between them, measure the direction between them, control the positional relationship between them, control the automatic operation between them, control the non-contact power feeding between them, or a combination of these Do.
Further, as shown in FIGS. 1 to 7, the AC power supplied to the power supply coil is subjected to pulse width modulation (Pulse-Width Modulation) by digital information transmitted and received between the power supply coil and the power reception coil. The AC power supplied to the power supply coil is subjected to pulse-phase modulation, the AC power supplied to the power supply coil is modulated with constant amplitude, and the variable magnetic field signal radiated from the power supply coil is modulated. Alternatively, a variable magnetic field signal modulated from the feeding coil is transmitted by a combination thereof.

Further, as shown in FIGS. 1 to 7, the power receiving coil is configured by using MI (Magnetro-Impedance) elements, the MI elements are configured as a mixer, and a plurality of sets of the MI elements are arranged in an array. Or a combination of these to enable highly sensitive reception of a varying magnetic field signal.
Further, as shown in FIGS. 1 to 7, the power feeding coil, the power receiving coil, or both of them are mounted on a submerged means for diving, mounted on a non-contact power feeding support means or a non-contact power feeding platform, and It is mounted on a navigating ship, mounted on a flying boat that flies over the sea, mounted on a sea relay means, or a combination thereof.

Further, as shown in FIG. 1 to FIG. 7, the submerged means for submerging in water or seawater is equipped with a non-contact power feeding means, a non-contact power receiving means, a non-contact power feeding control means, and a non-contact Equipped with power reception control means, magnetic wave communication means with fluctuating magnetic field signal, power storage means, propulsion control means, or a combination of these, and a specific submergence means to the other submergence means In contrast, non-contact power feeding is performed, communication is performed between them, or both are performed.
Further, as shown in FIGS. 1 to 7, the non-contact power supply support means or the non-contact power supply platform is supplied with a DC power supply or an AC power supply through a power cable, and a single line, a double line, a parallel two line, a square, A fluctuating magnetic field is radiated into the water or seawater from a feeding coil of a circular shape or a combination of these, and the electromotive force induced in the power receiving coil mounted on the submergence means that is active in water or seawater is converted to a DC voltage by the rectifier. Conversion is performed, and the power storage means mounted on the submergence means is charged.

Further, as shown in FIGS. 1 to 7, the moving means moving on the road surface is equipped with non-contact power receiving means, non-contact power supply / reception control means, and magnetic wave communication means using a variable magnetic field signal. The power storage means, the operation control means, or a combination of these, the non-contact power supply means installed on the road surface, the non-contact power supply / reception control means, the magnetic force generated by the variable magnetic field signal Using wave communication means or a combination of these, non-contact power supply is received and magnetic wave communication is performed.
Also, as shown in FIGS. 1 to 7, the power distribution means is supplied with a DC power supply or an AC power supply through a power cable, and is a single line, a multiple line, a parallel two line, a square, a circle, a line, a plane, Alternatively, a variable magnetic field is radiated into the atmosphere from a power supply coil by a combination of these, and an electromotive force induced by the radiated variable magnetic field in the power receiving coil mounted on the moving unit is converted into a DC voltage by a rectifying unit, and the movement The power storage means mounted on the means is charged with the DC voltage.

  Further, as shown in FIGS. 1 to 7, an operation control means including a center server, a satellite communication network, a marine relay means, the power distribution means, a power supply / reception control means, and the power reception means cooperate to form a digital information network. Configured to transmit / receive an AC power supply start / stop request from a mobile unit based on digital information transmitted in the network, and to control the AC power supply start / stop based on the start / stop request, Charges the electricity fee based on the stop request, relays information necessary for operation / maneuvering, exchanges information necessary for operation / maneuvering, supports operation control / operation maneuver, or performs a combination thereof.

Further, as shown in FIGS. 1 to 7, the traffic control means including a center server, the power distribution means, the power supply / reception control means, and the power reception means form a digital information network in cooperation with each other and are transmitted within the network. Based on the digital information, the AC power supply start / stop request from the mobile body is transmitted / received, the AC power supply start / stop is controlled based on the start / stop request, and the power charge is charged based on the start / stop request. It relays information necessary for operation and operation, exchanges information necessary for operation and operation, supports operation control and operation, or performs a combination thereof.
Moreover, as shown in FIGS. 1-7, the said feeding coil is installed along the road where a moving body is temporarily stopped with a traffic light, and the said moving body receives non-contact electric power feeding during a stop.

(Embodiment 1)
FIG. 1 is a configuration diagram of a non-contact power feeding device according to a first embodiment of the present invention, where 101 is a non-contact power feeding device, 11 is a power feeding coil, 41 is a power receiving coil, 21a and 21b are input terminals of the power feeding coil, 51a and 51b are output terminals of the receiving coil, 31 is an AC power source, 32a and 32b are phase adjusting means connected in parallel, 33 is power distribution means, 34 is phase adjusting means connected in series, 61 is power storage means, 62 Is a rectifying unit, 63 is a power receiving unit, 64 is a phase adjusting unit connected in series, and 100 is an interval between the feeding coil and the receiving coil.

Here, the power feeding coil 11 and the power receiving coil 41 are air-centered, are provided in the periphery of a magnetic body having a high magnetic flux density in an unsaturated state, and the coil and the magnetic body are not in direct contact with each other. It is assumed that they are provided at an interval or a combination thereof, and are opposed to each other in the horizontal direction with an interval 100 therebetween.
Further, each coil has a structure in which the magnetic flux density is not saturated by the AC power source to be driven, and has a structure in which the magnetic flux density is not saturated, or an air core that can drive a large current.
The power feeding coil 11, the phase adjusting means 32a and 32b, the phase adjusting means 34, and the AC power supply 31 constitute a constant voltage series-parallel resonance type inverter.

Further, the inductive reactance of the feeding coil 11, the capacitive reactance of the phase adjusting units 32a and 32b connected in parallel, and the capacitive reactance of stray capacitance existing around the feeding coil are in a non-resonant state. A non-resonant state close to the resonance state, a load Q value of 50 or less, a voltage fluctuation rate at the time of load of 50% or less, and mutually circulating the exciting current flowing through the feeding coil 11 to an AC power source It is assumed that the load on the power supply coil 31 is reduced, the radiation of the electromagnetic wave signal radiated from the feeding coil 11 is suppressed, and the variable magnetic field is efficiently radiated to the outside.
The inductive reactance of the feeding coil 11 and the capacitive reactance of the phase adjusting means 34 connected in series are in a non-resonant state, in a non-resonant state close to the resonance state, and a load Q of 50 or less. A voltage fluctuation rate under load of 50% or less, which improves the power factor of the effective load current flowing through the feeding coil 11 and suppresses the emission of electromagnetic wave signals radiated from the feeding coil 11 To do.

Further, the inductive reactance of the power receiving coil, the capacitive reactance of the phase adjusting unit 64 connected in series with the power receiving coil, and the capacitive reactance of stray capacitance existing around the power receiving coil are in a non-resonant state. It is in a non-resonant state close to the resonance state, has a load Q value of 50 or less, a load voltage fluctuation rate of 50% or less, suppresses re-radiation of electromagnetic wave signals, and is radiated from the feeding coil It is assumed that an electromotive force is efficiently induced from a varying magnetic field and effective power is supplied to the power storage means 61.
Further, the power distribution means 33 directly supplies the power supply coil 11 with AC power having a frequency exceeding 50 Hz to 41 MHz, drives it through a transformer, and supplies the phase control means connected in series for phase control. The devices are connected in parallel and supplied, driven through a reactor, driven by converting the frequency, or a combination of these to drive a large excitation current and radiate a high-power fluctuating magnetic field from the feeding coil The power receiving means 63 directly outputs the electromotive force induced in the power receiving coil 41, and outputs it via a transformer. The phase adjusting means is connected in series and output, and the frequency is converted and output. Impedance converted and output, converted to DC voltage by rectifier 62 and output, output to power storage means, or combined to output as a large current power source, and contactless as a whole Constituting the collector.

  Here, when the voltage of the AC power source for driving the feeding coil 11 is Ein * Sin (ωt), the inductance of the feeding coil 11 is L1, and ω = 2πf = the angular frequency of the varying magnetic field, the input terminals 21a, 21b The excitation current Iin (A) supplied to the capacitor is Iin = (Ein / ωL1) Cos (ωt), which is a large excitation current. Therefore, the phase adjusting means 32a and 32b are connected in parallel to the input terminal side of the feeding coil. As a result, the exciting current flowing in the AC power source is circulated between the phase adjusting means 32a and 32b connected in parallel with the feeding coil, and the load power factor is improved by the phase adjusting means 34 connected in series with the feeding coil. In this state, a large exciting current can be supplied to the feeding coil.

  The feeding coil, the phase adjusting means 32a and 32b, and the stray capacitance existing around the feeding coil are in a non-resonant state, in a non-resonant state close to the resonance state, and the load Q is 50 or less. The load voltage fluctuation rate is 50% or less, or a combination thereof, thereby suppressing the emission of electromagnetic wave signals, efficiently radiating fluctuating magnetic fields, and propagation loss of electromagnetic wave signals in the atmosphere. It is possible to perform non-contact power feeding and magnetic wave communication in a substance that is large compared to the propagation loss of water, in fresh water or seawater having a salinity of 0% to 10%, or in a combination thereof.

In addition, the radius of the feeding coil is a1, the area is S1, the number of turns is N1, the relative permeability of the magnetic material is μe1, and the magnetic flux density B generated at a distance Z (m) from the point of the feeding coil 11b is: When the feeding coil and the receiving coil face each other in the horizontal direction and the relative distance is represented by D = (a1 ^ 2 + Z ^ 2) ^ (1/2), according to Bio-Savart's law,
B = {(Ein / ωL1) * (μ0 * μe1 * N1 * S1) / [2π (a1 ^ 2 + Z ^ 2) ^ (3/2)]} Cos (ωt) = {(Ein / ωL1) * (μ0 * μe1 * N1 * S1) / (2π * D ^ 3)} Cos (ωt) −− (1)
It becomes.

Therefore, when the feeding coil and the receiving coil are circular coils, the inductance of the feeding coil can be obtained from L1 = 1.94 * 10 ^ -6 * μe1 * N1 ^ 2 * S1 as an approximate expression, and the number of turns of the receiving coil Is N2, the area of the receiving coil is S2, μ0 = 4π * 10E-7, and the relative permeability of the magnetic material of the receiving coil is μe2, the electromotive force Eout induced in the receiving coil is Faraday's From the law of electromagnetic induction,
Eout = -dΦ / dt = -N2 * S2 * dB / dt = {[(Ein / 10) * (μe2 * (N2 / N1) * S2)] / D ^ 3]} Sin (ωt) −− (2 )
Since it has the same phase as the voltage of the AC power supply and does not include ω in the amplitude term, it has a wideband characteristic. Therefore, if the electromotive force is output as it is using a source follower circuit, it can be used as a magnetic wave antenna for digital communication. Indicates that they can also be shared.

However, in order to use the power receiving coil for contactless power feeding, it is necessary to output effective power from the electromotive force, and the relationship between the reactance ωL2 (Ω) of the power receiving coil and the internal resistance R (Ω) of the power storage means Is ωL2 <R, even if the power receiving coil is in a non-resonant state, the current Iout (A) flowing through the power storage means is
Iout = Eout / (R + jωL2) ≒ Eout / (R) = {[(Ein / (10 * R)) * (μe2 * (N2 / N1) * S2)] / D ^ 3} Sin (ωt) − -(3)
Thus, an effective current flows through the power storage means, and can be applied to non-contact power feeding in the air or in seawater.
On the other hand, when the relationship ωL2 <R is not established, there is a problem that the load power factor of the current Iout (A) flowing through the power storage unit is reduced and the power supply efficiency is reduced.

Therefore, when the phase adjusting means having a reactance of (1 / ωC2) is connected in series to the power receiving coil and (1 / (ω ^ 2 * L2 * C2)) ≈1, the current Iout (A )
Iout = Eout / (R + jωL2 (1- (1 / (ω ^ 2 * L2 * C2))) ≒ Eout / (R) = {[(Ein / (10 * R)) * (μe2 * (N2 / N1) * S2)] / D ^ 3} Sin (ωt)-(4)
Thus, a charging current having the same phase as the electromotive force flows through the power storage means, and effective power is output.
In the above equation (4), even when the phase adjusting means is connected in series, the case where ωL2 (1- (1 / (ω ^ 2 * L2 * C2)) <R holds The power receiving coil is in a non-resonant state close to the resonance state, the load coil Q value (ωL2 / R) of the power receiving coil is 50 or less, and the resonance frequency of the power receiving coil is It is in a state lower than the frequency of the alternating current power supply to be driven, the voltage fluctuation rate at the time of load is 50% or less, or the combination thereof, the electromagnetic wave signal re-radiated from the power receiving coil is suppressed. Non-contact power supply is possible.

In addition, the power supply coil is wound in close contact with a magnetic body, and when a large current is driven to the power supply coil, the magnetic flux density Br (r (m) point from the power supply coil toward the center point ( Tesla) is expressed by Br = μ0 * μe1 * N1 * Iin / 2r, and when r≈0, when the supply current Iin (A) increases, the magnetic flux density easily increases the saturation magnetic flux density of the magnetic material. Therefore, it is necessary to be air-centered at least near the coil.
In addition, in order to supply a large amount of power in a non-contact manner, both the power supply coil and the power receiving coil are air-core so that the magnetic flux density is not saturated by a large current, and the magnetic flux density is not saturated by a large current. The magnetic flux density is not saturated, or a combination thereof, and the magnetic flux density of the varying magnetic field radiated from within the area of the feeding coil is made to be uniform, the electromotive force induced from the power receiving coil is made to be uniform, Or these measures are needed.

Here, when the effective power is output from the power receiving coil, the equivalent effective power is supplied from the AC power source, but the reactance ωL1 (Ω) of the power supply coil and the internal resistance R (Ω ) And ωL1 <R, the load power factor with respect to the AC power supply is high and the power supply efficiency is good.However, when the relationship ωL2 <R is not satisfied, the reactance is (1 / It is necessary to take measures by connecting the phase adjusting means 34 of ωC1) in series.
Further, even when the phase adjusting means 34 is connected in series with the feeding coil, ωL1 (1- (1 / (ω ^ 2 * L1 * C1)) <R is satisfied, and the feeding coil is close to the resonance state. It is in a non-resonant state, the output impedance of the AC power supply is made lower than the load impedance, the reactance of the feeding coil is reduced, the load Q value (ωL1 / R) of the feeding coil is 50 or less, and the resonance of the feeding coil If the frequency is lower than the frequency of the alternating-current power supply to be driven and the voltage fluctuation rate under load is 50% or less, or a combination thereof, the electromagnetic wave signal radiated from the feeding coil is suppressed. Non-contact power feeding in the inside becomes possible.

Further, the power distribution means 33 is added with functions of starting and stopping the AC power supply, collecting billing information, switching a plurality of sets of feeding coils, combining a plurality of sets of feeding coils, or a combination thereof.
In addition, since the electromotive force induced in the power receiving coil changes due to the change in the interval between the power feeding coil and the power receiving coil, a sensor is provided to constantly monitor the electromotive force, and tap switching of the power receiving coil and tap switching of the reactor are performed. Further, it is necessary to adjust and control the tap switching of the phase adjusting means, the pulse width of the AC power source for driving the feeding coil, or a combination thereof.

Further, when the power feeding coil is embedded under the road surface or the power receiving coil is mounted on an EV vehicle, a non-magnetic good conductor plate is disposed on the lower surface of the power feeding coil or the upper side of the power receiving coil. The effect of reducing the eddy current loss generated in the object existing in the vehicle body or the vehicle body of the EV vehicle and increasing the radiation of the variable magnetic field in the direction opposite to the good conductor plate can be expected.
In addition, by bending the good conductor plate so that the direction of the magnetic field lines of the fluctuating magnetic field radiated from the feeding coil is reflected in a certain direction, or by making a case of a good conductor having at least one surface open. Improvement of the gain or directivity of the feeding coil can be expected.

The electromotive force induced in the power receiving coil depends on the voltage of the AC power source supplied to the power feeding coil, depends on the inductive reactance of the power feeding coil, and depends on the distance between the power feeding coil and the power receiving coil. , Depends on the ratio of the number of turns of the power receiving coil and the number of turns of the power feeding coil, depends on the area of the power receiving coil, depends on the relative permeability of the magnetic body of the power receiving coil, or depends on a combination thereof Therefore, by changing the combination of these parameters, the induced electromotive force can be estimated and optimized.
In addition, the feeding coil and the receiving coil have a thickness in which the short sides of the flat rectangular conductor are stacked with a plurality of insulating thin plate conductors within a range in which the resistance value does not become excessive due to the skin effect, or the rectangular conductor and the insulator are sandwiched. By overlapping in the shape, the increase in loss due to the skin effect can be reduced.

  FIG. 2 is another configuration diagram of the non-contact power feeding apparatus according to the first embodiment of the present invention, in which 102 is a non-contact power feeding apparatus, 11 is a parallel two-line power feeding coil, 41 is a power receiving coil, and 21a and 21b are Input terminals of the feeding coil, 51a and 51b are output terminals of the receiving coil, 31 is an AC power source, 32a and 32b are phase adjusting means connected in parallel, 33 is power distribution means, 34 is phase adjusting means connected in series, 61 is a power storage means or load resistance, 62 is a rectifying means or DC conversion means, 63 is a power receiving means (not shown), 64 is a phase adjusting means connected in series, and 100 is a distance between the feeding coil and the receiving coil. (Not shown) and 105 are sectional views of the feeding coil.

Here, either or both of the feeding coil 11 and the receiving coil 41 are air-centered, non-saturated, non-resonant, non-resonant near the resonance, and horizontally. They are opposed to each other or a combination thereof, and a large excitation current can be driven to radiate a high-output fluctuating magnetic field on the feeding coil side, so that a high-output electromotive force can be induced from the receiving coil.
In addition, a single flat line, a double line, two parallel lines, a rectangular loop coil, a rectangular helical coil, a rectangular spiral coil, or a flat rectangular coil formed by a combination thereof is grounded in the horizontal direction for the feeding coil 11, Installed along the driving lane, installed in the power supply service area, constituted a seamless and long power supply coil, or a combination of these, high power non-power to the power receiving coils mounted on multiple EV cars at the same time Enables contact power supply.
Further, the feeding coil can be divided into a plurality of sections, intersected in a plurality of sections, or distance information can be generated by a combination thereof.

In addition, since a large exciting current always flows through the power supply coil, an inrush current that flows through the AC power supply 31 when the AC power supply 31 is started up by connecting a phase adjusting unit connected in parallel with the power supply coil to a reactor 32b and a capacitor 32a. And the power factor is improved by the phase adjusting means 34 connected in series with the power supply coil, and when there is no power supply request from the power receiving means, the current supply to the power supply coil is cut off, or the power supply coil It is necessary to take measures such as lowering the supply voltage.
Further, the feeding coil and / or the receiving coil are configured by a flat conductor, and the flat conductor and a high dielectric constant insulator are stacked in a sandwich shape to form a flatwise winding as shown in FIG. It is impregnated with an insulating material to be waterproofed, the flat conductor is wound around a drum in a horizontal direction, the flat conductor is installed in a horizontal direction with respect to the ground, and distributed capacitance or stray capacitance is added to the coil. Thus, the burden on the phase adjusting means can be reduced, or the combination can be made economical.

  Further, the inductive reactance of the feeding coil and / or the receiving coil, the capacitive reactance of the phase adjusting means, and the capacitive reactance of stray capacitance existing around the feeding coil are in a non-resonant state, Electromagnetic wave radiated from the feeding coil by a non-resonant state near 50, a load Q value of 50 or less, a load voltage fluctuation rate of 50% or less, a resonance frequency lower than the frequency of the AC power supply, or a combination thereof. It is possible to suppress the signal, to suppress the electromagnetic wave signal re-radiated from the power receiving coil, and to suppress the emission or re-radiation of the displacement current in water or sea water, so that the loss due to the eddy current loss can be reduced. Because it can be suppressed, a large fluctuating magnetic field is radiated from the feeding coil to the outside with high efficiency in the seawater. It is possible to induce a large electromotive force at a high efficiency.

Further, the power supply coil is installed horizontally on the road surface as two flat parallel lines, the power reception coil is installed as a rectangular coil on the moving body facing the power supply coil, and the voltage of the AC power source that drives the power supply coil Is Ein * Sin (ωt), the electromotive force Eout induced in the receiving coil is
Eout = -dΦ / dt = [((Ein / Ly1) * N2 * S2) / (2 ^ 0.5 * D1 * ACOSH (Lx1 / w1))] Sin (ωt) −− (5)
It becomes.
Here, Ly1 = length of flat parallel two lines, N2 = number of windings of receiving coil, S2 = area of receiving coil, D1 = relative distance between feeding coil and receiving coil = ((d1 / 2) ^ 2 + Z ^ 2) ^ 0.5, Lx1 = interval of two flat parallel lines, w1 = width of two flat parallel lines, t1 = thickness of two flat parallel lines, and t1 << w1.
Further, according to the equation (5), the electromotive force increases in proportion to (1) the number of windings N2 and the area S2 of the receiving coil, (2) increases in inverse proportion to the relative distance D1, and (3 ) The width w1 of the parallel two lines increases as it approaches Lx1.

Further, when the relationship between the reactance ωL2 (Ω) of the power receiving coil and the internal resistance R (Ω) of the power storage means is ωL2 <R, the current flows to the power storage means even if the power receiving coil is in a non-resonant state. The current Iout (A) is
Iout = Eout / (R + jωL2) ≒ Eout / (R) = [(((Ein / (Ly1 * R)) * N2 * S2) / (2 ^ 0.5 * D1 * ACOSH (Lx1 / w1))] Sin ( ωt) --- (6)
Thus, an effective current flows through the power storage means, and non-contact power feeding is possible in the air and sea water.
Further, when the relationship ωL2 <R is not established, a phase adjusting unit having a reactance of (1 / ωC2) is connected in series to the power receiving coil, and (1 / (ω ^ 2 * L2 * C2)) ≈1 When the non-resonance is close to the resonance state, a charging current having the same phase as the electromotive force flows through the power storage means.

However, even when the phase adjusting means is connected in series with the power receiving coil, the power receiving coil is in a non-resonant state close to a resonance state, and the load Q value (ωL2 / R) of the power receiving coil is 50 or less. The voltage fluctuation rate is 50% or less, and the resonance frequency of the power receiving coil is lower than the frequency of the AC power source to be driven, or a combination thereof suppresses the electromagnetic wave signal re-radiated from the power receiving coil. Therefore, non-contact power feeding in seawater becomes possible.
Further, even when the phase adjusting means is connected in series in the power supply coil, ωL1 (1- (1 / (ω ^ 2 * L1 * C1)) <R is satisfied and the power supply coil is in a non-resonant state. The resonance state, the load coil Q value (ωL1 / R) is 50 or less, the voltage fluctuation rate under load is 50% or less, and the resonance frequency of the power supply coil is lower than the frequency of the AC power supply to be driven These or a combination thereof suppresses the electromagnetic wave signal radiated from the power supply coil, so that non-contact power supply in seawater is possible.

In addition, when the feeding coil is configured using a wide flat conductor, the feeding coil having a long side of up to about 500 m is wound around a drum and transported by a dedicated trailer, and then the drum is placed on a relatively shallow portion of the road surface. When rewinding or embeding or transporting the power supply coil as a unit, the length that can be transported by the trailer is limited. There is an advantage that can be achieved.
Further, the entire long feeding coil can be enclosed in a heat-resistant and heat-conductive resin molded product, impregnated with an insulating material, provided with a good conductive material having at least one surface opened, or a combination thereof.

FIG. 3 is another configuration diagram of the non-contact power feeding device according to the first embodiment of the present invention, 103 is a configuration diagram of the non-contact power feeding device, 301a to 301d are power feeding coils, and 300a to 300d are street blocks. .
Here, the power supply coils 301a to 301d are installed in a section where an EV vehicle running on the left side waits for a signal at an intersection, and enables non-contact power supply while the EV vehicle is temporarily stopped.

Further, the feeding coils 301a to 301d are air-centered, non-saturated, non-resonant, non-resonant close to the resonance, and face the power receiving coil (not shown) in the horizontal direction. Or a combination thereof, and a large excitation current can be driven to radiate a high-output fluctuating magnetic field on the feeding coil side, and a high-output electromotive force can be induced from the receiving coil.
The feeding coils 301a to 301d are a single line, a double line, a parallel two line, a rectangular loop coil, a rectangular spiral coil, or a long coil formed by a combination thereof. It is installed along the traveling lane to form a seamless and long power supply coil, or a combination of these enables high-power non-contact power supply to power receiving coils mounted on a plurality of EV cars at the same time.

Further, the power distribution means (not shown) connects the plurality of power supply coils in parallel, connects the plurality of power supply coils in series, and provides the AC power supply in common for connection. By connecting these AC power sources and connecting the phase adjusting means in common, or by combining them, it is possible to expand the power supply service area and increase the number of power receiving coils that can supply power simultaneously.
Further, when the plurality of feeding coils are connected in series, it is necessary to increase the withstand voltage of the phase adjusting unit, but since the capacitance value of the phase adjusting unit can be decreased, Benefits that can reduce the burden.

In addition, since a large exciting current always flows in the power feeding coil, a phase adjusting unit, a reactive power compensating unit, a phase compensating unit, or a combination of these connected in parallel is provided to improve the power factor and from the power receiving unit. When there is no power supply request, it is necessary to take measures such as cutting off the current supply to the power supply coil, reducing the supply voltage to the power supply coil, or maintaining the magnetic wave communication function.
Further, the feeding coil is constituted by a flat flat conductor, and the flat flat conductor and a high dielectric constant insulator are stacked in a sandwich shape to form a flatwise winding as shown in FIG. It is impregnated and waterproofed, the flat conductor is wound around a drum in a horizontal direction, the flat conductor is installed in a horizontal direction with respect to the ground, and a distributed capacitance or stray capacitance is added to the coil to add the phase. The burden on the adjusting means can be reduced, or the combination can be made economical.

  FIG. 4 is another configuration diagram of the non-contact power supply apparatus according to the first embodiment of the present invention, in which 104 is a non-contact power supply apparatus in seawater, 11 is a power supply coil, 31 is an AC power source, and 32a and 32b are Phase adjustment means connected in parallel, 34 phase adjustment means connected in series, 37 water distribution case side waterproof case, 41 power receiving coil, 61 electricity storage means, 62 rectification means or DC voltage conversion means, 64 Phase adjusting means connected in series, 67 is a power receiving means side waterproof case, and 100 is an interval (not shown) between the feeding coil and the receiving coil.

Here, the power feeding coil and / or the power receiving coil is set to a non-resonant state, a non-resonant state close to the resonance state, or a load Q value is set to 50 or less, and a voltage fluctuation rate at load is set to 50% or less. It is possible to suppress the emission of electromagnetic wave signals from the power supply coil and to suppress the re-radiation of electromagnetic waves from the power receiving coil, and eddy current loss that occurs in fresh water or seawater with a salt concentration of 0% to 10%. Therefore, non-contact power feeding is possible with high power feeding efficiency over short distances, and magnetic wave communication is possible over medium distances.
The frequency of the alternating current is a frequency band in which the power receiving coil can be operated, is a frequency band of 30 kHz or less, is a frequency band assigned to a high-frequency use facility, 6.78 MHz, 13.56 MHz, It is a frequency band allocated to the ISM band including 20.34 MHz, 27.12 MHz, and 40.68 MHz, or by combining these, high-power non-contact power feeding in seawater becomes possible.

When using a frequency band in which the power receiving coil can be operated, or a frequency band of 30 kHz or less, the power feeding coil is a single line, a multiple line, or a parallel two line, and the power receiving coil Is a rectangular coil, and the power supply coil is installed on the seabed, suspended in seawater and fixed with an anchor on the seafloor, or suspended on the sea surface, and installed in a high-power non-contact manner. A power supply platform can be realized.
Alternatively, the AC power is supplied directly from a ship anchored at sea, or converted into a required frequency by a frequency conversion means provided in a waterproof case and supplied.

In addition, the waterproof case has a pressure-resistant structure so as to withstand use in the deep sea, is a structure filled with an insulator, and has a structure in which a surface where the power feeding coil and the power receiving coil are opposed is open, It is a structure covered with a conductor structure except for the facing surfaces, or a combination thereof.
Further, the power receiving coil is mounted on a submerged submarine robot, enables non-contact power supply while the submarine robot is stopped or submerged, and / or approaches and non-contacts with the non-contact power supply platform by magnetic wave communication. The power feeding can be controlled between each other.

FIG. 5 is a configuration diagram of a coil according to the first embodiment of the present invention, 105 is a cross-sectional view of the coil, 81a to 81c are flat flat conductors or flat rectangular conductors, 82a and 82b are cross sections of parallel two lines, Reference numeral 83 denotes a variable magnetic field.
Here, the conductors 81a to 81c are flat flat conductors or flat rectangular conductors whose thickness is within an allowable value of the short side skin resistance, and are alternately wound with a high dielectric constant insulator and connected in parallel. It is a flatwise winding, the long side direction is arranged in the horizontal direction, constitutes a single line, a double line, two parallel lines, or a combination thereof, and the variable magnetic field 83 is radiated in the vertical direction. .

In particular, as the width of the conductor approaches the interval between the two parallel lines, the radiation intensity of the variable magnetic field 83 increases and is usually set within 1000 times the insulation distance between the two parallel lines.
Similarly, the flat flat conductors or flat rectangular conductors are arranged in the vertical direction to form a single line, a double line, two parallel lines, a circular or square closed loop coil, or a combination thereof, and a variable magnetic field in the vertical direction. The same effect can be obtained even if it is emitted.
In addition, when the coil is used as a power supply coil, it is necessary to drive a large excitation current, and a distributed capacity can be added by using a flatwise winding. Therefore, a phase connected in parallel is necessary to improve the power factor. The burden on the adjusting means can be reduced.

Further, by impregnating the insulator after forming the coil, a unit structure is obtained, which enables production in a factory.
Further, the unit structure is covered with a metal case, a metal structure, or a pressure-resistant structure except at least a surface where the power feeding coil and the power receiving coil face each other, and the variable magnetic field 83 is concentrated in the facing direction. Can be emitted.

(Embodiment 2)

FIG. 6 is a configuration diagram of a non-contact power feeding system according to the second embodiment of the present invention, in which 91a and 91b are submergence means, 92a and 92b are propulsion means, and 93a and 93b are non-magnetic wave antennas. The contact power supply / reception coils, 94a and 94b are non-contact power supply / reception means, 95a and 95b are magnetic wave communication means, and 96a and 96b are propulsion control means.
Here, the submergence means 91a and 91b are submarine boats that operate in seawater, are submarine support boats that operate in seawater, are non-contact power supply platforms installed in seawater, and are anchored at sea. A function that is a non-contact power supply platform, or a combination thereof, and performs non-contact power supply to the other, receives non-contact power supply from the other, performs magnetic wave communication between each other, or a combination thereof It shall have.

The magnetic wave antenna and non-contact power supply / reception coils 93a and 93b share a magnetic wave antenna and a non-contact power supply / reception coil, or have a magnetic wave field antenna and a non-contact power supply / reception coil arranged in parallel. To do.
In addition, when any of the submarine boats consumes the power of the storage battery and needs to receive power, a fluctuating magnetic field signal modulated by digital information is transmitted from the magnetic wave antenna to the power feeding support boat 91b located in the vicinity. When the power supply is requested, the power supply support boat 91b can detect the distance and direction to the submarine boat 91a with high accuracy, control the propulsion unit by the propulsion control unit, and attempt to approach the submarine boat 91a.

The submarine boat 91a and the power feeding support boat 91b exchange digital information by using the magnetic wave communication units 95a and 95b, and control the propulsion unit so that the non-contact power receiving and receiving coils are located within a power feedable range. It is possible to perform non-contact power supply and reception control while maintaining the positional relationship.
The fluctuating magnetic field signal is propagated or diffused by the fluctuating magnetic field, and the propagation speed is about 300 km per second, which is about 1000 times the speed of the ultrasonic signal in the atmosphere. Since no reflection occurs on the surface, high quality communication is possible.

  Further, the exchange of the digital information is performed by a constant amplitude modulation system including a pulse width modulation system, and the frequency band of the magnetic wave signal including the digital information enables the power receiving coil to communicate in seawater. It is a frequency band, is a frequency band of 30 kHz or less, is a frequency band allocated to high-frequency utilization equipment, and is an ISM band including 6.78 MHz, 13.56 MHz, 20.34 MHz, 27.12 MHz, and 40.68 MHz. It is assumed that the frequency bands are allocated or a combination thereof, and the occupied frequency bandwidth is wide.

FIG. 7 is another configuration diagram of the non-contact power supply and reception system according to the second embodiment of the present invention, in which 11 is a power supply coil, 41 is a power reception coil, 33 is power distribution means, 35 is power supply / reception control means, and 36 is Power supply means, 61 is a power storage means, 62 is a rectification means (not shown), 63 is a power reception means, 66 is a power supply / reception control means, 68 is a movement means, and 202 is a road surface.
Here, the moving means 68 is an EV car, a transport car, a hybrid car, or a combination thereof, and an electromotive force induced in the power receiving coil 41 is connected to and built in the power receiving means 63. It is converted into a DC voltage by the rectifying means 62, the power storage means 61 is charged via the power supply / reception control means 66, and power is supplied to the moving means 67 by the charged power.

On the other hand, AC power of commercial frequency is supplied from the power distribution means 33 to the power supply means 36 through the power supply / reception control means 35 through the power cable, and the power supply means 36 drives the excitation current directly or by converting the frequency to the power supply coil 11. Then, a large variable magnetic field is radiated from the power supply coil 11 toward the power receiving coil 41, and the variable magnetic field is inductively coupled to the power receiving coil 41 to induce an electromotive force.
Further, each of the power supply / reception control means 66 and the power supply / reception control means 35 incorporates a magnetic wave communication means (not shown) using a variable magnetic field signal, and induces a variable magnetic field between the power receiving coil 41 and the power supply coil 11. Or a magnetic wave antenna in parallel with the power receiving coil or the feeding coil to transmit and receive control signals, contactless power feeding start / stop requests, billing information, location information, automatic driving information, or these Information exchange by a combination of

  Further, the exchange of the digital information is performed by a constant amplitude modulation method including a pulse width modulation method, and the frequency band of the variable magnetic field signal including the digital information is operated in a non-resonant state or a non-resonant state. This is a frequency band that is enabled, is a frequency band of 30 kHz or less, is a frequency band allocated to high-frequency equipment, and includes 6.78 MHz, 13.56 MHz, 20.34 MHz, 27.12 MHz, and 40.68 MHz. It is assumed that the frequency bands are allocated to the ISM band, or a combination thereof, and the occupied frequency bandwidth is within a range prescribed by law.

  In the above description, since the feeding coil and the receiving coil are used in a non-saturated state, a large current can flow through the feeding coil and the receiving coil, so that a large-capacity non-contact power feeding device can be realized with high feeding efficiency. At the same time, the feeding coil and the receiving coil are used in a non-resonant state or a non-resonant state, the load Q value is 50 or less, the voltage fluctuation rate during load is 50% or less, and the resonance frequency or resonance frequency is AC. Propagation loss of electromagnetic wave signals in the atmosphere due to a lower frequency than the frequency of the power supply, and the reactance value of the receiving coil in the non-resonant state or non-resonant state is smaller than the internal resistance value of the storage means In a substance with a large relative to propagation loss in the atmosphere, in fresh water or seawater with a salinity of 0% to 10%, or Such as a non-contact power feeding device and the non-contact power supply system in the combinations of these can be realized at low cost, a variety of development can be achieved.

  Moreover, as shown in FIGS. 1-7, the said feeding coil can be installed along the road surface where a moving body is temporarily stopped by a traffic light, and non-contact electric power feeding can be performed while the said moving body stops.

Since the present invention is configured as described above, the power feeding coil and the power receiving coil are in a non-saturated state, a non-resonant state or a non-resonant state, a load Q is 50 or less, and a voltage fluctuation at the time of load Since the rate is 50% or less, or a combination thereof, the present invention is used to perform high-power non-contact power feeding to a running or stopped EV vehicle, while diving, walking, or High-power non-contact power supply to a running robot, non-contact power supply to various home appliances, non-contact power supply to submersible means in water or seawater, and a digital information network is configured to be non-contact It is possible to improve the efficiency of the power feeding system, or to apply or apply to a wide range of uses including combinations thereof.

11 Power supply coil 41 Power reception coil 21a, 21b Connection terminal 51a, 51b Connection terminal 31 AC power supply 32a, 32b Phase adjustment means 33 connected in parallel Power distribution means 34 Phase adjustment means 35 connected in series Power supply / reception control means 36 Power supply means 37 Waterproofing Case

61, 61a, 61b Power storage means 62, 62a, 62b Rectifying means 63 Power receiving means 64, 64a, 64b Phase adjusting means connected in series 66 Power supply / reception control means 67 Waterproof case 68 Moving means 81a, 81b, 81c Flat conductor or flat angle Conductor 82a, 82b Parallel two-line cross section 83 Fluctuating magnetic field 91a, 91b Submarine means 92a, 92b Propulsion means 93a, 93b Magnetic wave antenna and non-contact power supply / reception coils 94a, 94b Non-contact power supply / reception means 95a, 95b Magnetic wave communication means 96a 96b Propulsion control means

DESCRIPTION OF SYMBOLS 100 Space | interval of a feeding coil and a receiving coil 101 Configuration diagram of a non-contact power feeding device 102 Other configuration diagram of a non-contact power feeding device 103 Other configuration diagram of a non-contact power feeding device 104 Configuration diagram 105 of a non-contact power feeding device in seawater Coil cross section 106 Non-contact power supply system configuration diagram 107 Non-contact power supply system configuration diagram 201 Seawater surface 202 Road surfaces 300a, 300b, 300c Street blocks 301a, 301b, 301c Road surface power supply device

Claims (12)

A power supply device for that power to the power receiving device using electromagnetic induction,
A feeding coil;
An AC power supply for passing an exciting current through the power supply coil;
Phase adjusting means for adjusting the phase of the exciting current;
With
The feeding coil is a single line and / or a double line,
The feeding coil and the phase adjusting means are coupled in parallel and in series,
The inductive reactance of the feeding coil, the capacitive reactance of the phase adjusting means connected in parallel, and the capacitive reactance of stray capacitance existing around the feeding coil are in a non-resonant state close to a resonance state. ,
The inductive reactance of the power supply coil and the capacitive reactance of the phase adjusting means connected in series are in a non-resonant state close to a resonance state. A power supply device for that power to the power receiving device using electromagnetic induction,
A feeding coil;
An AC power supply for passing an exciting current through the power supply coil;
Phase adjusting means for adjusting the phase of the exciting current;
With
The feeding coil is a single line and / or a double line,
The feeding coil and the phase adjusting means are coupled in parallel and in series,
The angular frequency of the excitation current omega, Omegaeru1 the inductive reactance of the feeding coil, the feeding coil and the serially connected phase adjusting means of the capacitive reactance of 1 / ωC1, internal resistance of the powered device Is R,
-R <ωL1 (1- (1 / (ω × ω × L1 × C1))) <R
Or 0 <ωL1 / R <50
A power feeding device characterized in that The power feeding device according to claim 1 , wherein the power feeding coil is a flat and wide single line and / or a flat and wide double line . The power feeding device according to any one of claims 1 to 3, wherein the power feeding coil is supplied with the exciting current from the AC power source directly, via a reactor, or via a transformer . The power feeding device according to any one of claims 1 to 4, wherein the power feeding coil also serves as a power transmission / distribution line or an indoor wiring of a commercial power source . A power receiving coil to which electric power is supplied from the power feeding device according to any one of claims 1 to 5 using electromagnetic induction
  A power receiving device comprising: Phase adjustment means coupled in series and / or in parallel with the power receiving coil,
The capacitive reactance of the phase adjusting means coupled in series and / or in parallel with the power receiving coil is substantially the same as the inductive reactance of the power receiving coil.
Powered device according to claim 6, characterized in that. Phase adjustment means coupled in series with the power receiving coil,
The angular frequency of the excitation current is ω, the inductive reactance of the power receiving coil is ωL2, the capacitive reactance of the phase adjusting means connected to the power receiving coil is 1 / ωC2, and the internal resistance of the power receiving device is R. When
-R <ωL2 (1- (1 / (ω × ω × L2 × C2))) <R
Or 0 <ωL2 / R <50
The power receiving device according to claim 6 . The power receiving coil is a rectangular coil facing the feeding coil in the vertical direction.
The power receiving device according to claim 6, wherein the power receiving device is a power receiving device. A power feeding device according to any one of claims 1 to 5, a power receiving device according to any one of claims 6 to 9 ,
A non-contact power supply system. The contactless power feeding system according to claim 10, further comprising a digital information communication function using a variable magnetic field generated from the power feeding coil or the power receiving coil. The power receiving coil is mounted on a moving body or moving means.
  The non-contact electric power feeding system according to claim 11 characterized by things.

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