WO2016178425A1 - Corps rotatif de transmission d'énergie électrique - Google Patents

Corps rotatif de transmission d'énergie électrique Download PDF

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Publication number
WO2016178425A1
WO2016178425A1 PCT/JP2016/063573 JP2016063573W WO2016178425A1 WO 2016178425 A1 WO2016178425 A1 WO 2016178425A1 JP 2016063573 W JP2016063573 W JP 2016063573W WO 2016178425 A1 WO2016178425 A1 WO 2016178425A1
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electrode
power transmission
rotating body
shaft
type
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PCT/JP2016/063573
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English (en)
Japanese (ja)
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原川　健一
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株式会社ＥｘＨ
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Publication of WO2016178425A1 publication Critical patent/WO2016178425A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/05—Circuit arrangements or systems for wireless supply or distribution of electric power using capacitive coupling

Definitions

  • This invention relates to a power transmission rotating body using an electric field coupling method.
  • a power transmission rotating body that supplies power to a load installed on a rotating body (hereinafter referred to as “power transmission rotating body”) is externally connected to an electrode provided on the rotating body so as to be exposed.
  • a contact-type power transmission rotating body that supplies power without touching it, and a non-contact type power transmission rotating body that supplies power without contacting an electrode that is not exposed inside the rotating body. Can be separated.
  • the inventors of the present invention invented the “electric field coupling method” as a new method for supplying non-contact power, and invented a new circuit technology that realizes the new method (Patent Document 1). reference).
  • the electric field method is a method in which electric power is transmitted by an electric field via a capacitor (hereinafter, such a capacitor is referred to as a “junction capacitance”), and is different from a method in which a coil is used to couple magnetically as in the magnetic field method.
  • a capacitor hereinafter, such a capacitor is referred to as a “junction capacitance”
  • FIG. 1 is a basic circuit diagram of such an electric field coupling type power transmission rotating body.
  • the basic circuit of the electric field coupling type power transmission rotating body uses four metal plates (two-pair structure), and transmits high-frequency current from the power source to the load via two junction capacitors Cc. To do.
  • the junction capacitance Cc is a capacitance in which two metal plates are opposed to each other, as shown in FIG. 1, the two metal plates can be physically shifted and used. That is, an electrode (metal plate) is attached to the end of the power transmission unit 21 that transmits power from the power source Vf, and an electrode (metal plate) is attached to the tip of the power reception unit 31 that receives the power and supplies it to the load R.
  • an electric field coupled power transmission technique is realized.
  • the electric field coupling method having one junction capacitance Cc formed of two pairs of metal plates is referred to as a “one-pair electric field coupling method”.
  • FIG. 1 the electric field coupling method having one junction capacitance Cc formed of two pairs of metal plates is referred to as a “one-pair electric field coupling method”.
  • the electric field coupling method having two junction capacitors Cc formed from two pairs of metal plates is referred to as a “two-pair electric field coupling method”.
  • a rotating system such as a power transmission rotating body
  • one electrode is used as a stator and the other electrode is used as a rotor.
  • the junction capacitance Cc increases as the electrode spacing is narrow and the contact area is large. Furthermore, the higher the frequency and the higher the voltage, the larger the transmitted power.
  • FIG. 2 is a view showing an electric field coupling type power transmission rotating body using two plain bearings. As shown in FIG. 2, the conventional power transmission rotating body can transmit 50 W of power very smoothly using two plain bearings.
  • the power transmission rotating body shown in FIG. 2 can simplify the bearing structure, it has a problem that the structure on the shaft side becomes complicated.
  • the shaft and the bearing stand shown in FIG. 2 are both made of resin and are difficult to apply to an actual machine.
  • FIG. 3 is a diagram showing a bearing structure of a two-pair electric field coupling type electric power transmission rotating body 11 using a sliding bearing.
  • the power transmission rotating body shown in FIG. 3 is capable of transmitting power from the middle of the shaft 32, and shows that the bearing fixing base 22 is made of metal and can withstand practical strength. Further, a gimbal mechanism 23 is also provided.
  • the bearing itself functions as one electrode (bearing external electrode 24), and the bearing internal electrode 33 must be prepared insulated from the bearing. This structure is complex and reduces availability.
  • FIG. 4 is a diagram showing an image of power feeding from the machine end of the two-pair electric field coupling type power transmission rotating body 11. That is, in the example of FIG. 4, electric power is transmitted from the shaft end portion into the shaft. Also in this case, the first central shaft 41 and the second central shaft 42 are semi-fixed with a resin material 25 such as silicone in order to make two junction capacitances Cc, and a slide bearing 43 is provided on these shafts. Two junction capacitances Cc are formed. Furthermore, the size of the power transmission rotating body 11 itself is slightly larger.
  • This invention is made
  • the electric field coupling type electric power transmission rotating body 12 is an electric power transmission rotating body 12 that can transmit electric power by only one sliding bearing 51 and is cylindrical. Power transmission rotating body 12c and disk-shaped power transmission rotating body 12d. As shown in FIG. 5, the cylindrical power transmission rotating body 12 c includes a case where power is supplied from a shaft body 52 (machine body side shaft 45 side) disposed inside (inside) the power transmission rotating body 12, and power transmission. In some cases, power is supplied from an outer enclosure 53 disposed outside (outside) the rotating body 12. Furthermore, the shaft body 52 may function as a rotor (rotary body) or may function as a stator (fixed body).
  • the disc-shaped power transmission rotating body 12d described later has no distinction between the inside and the outside like the cylindrical power transmission rotating body 12c, and the power transmitting unit 21 and the power receiving unit 31 each function as a rotor (rotating body). And may function as a stator (fixed body).
  • FIG. 6 although it is a two-pair type, it can be simplified with a structure that is not so different from the one-pair type.
  • the power transmission bearing to which the present invention is applied can solve this problem by adopting a structure of a one-pair type power transmission rotating body, that is, a structure that requires only one electrode on the shaft side. . Furthermore, installation of the power transmission rotating body is facilitated.
  • FIG. 8 is a diagram showing a cross-sectional structure and a circuit of a cylindrical and diode-type power transmission rotating body, which is Type-A or B shown in FIG. 7.
  • FIG. 8 is a diagram showing a cross-sectional structure and a circuit of a cylindrical and diode-type power transmission rotating body, which is Type-C or D shown in FIG. 7.
  • FIG. 8 is a diagram showing a cross-sectional structure and a circuit of a power transmission rotating body of Type-C or D shown in FIG. 7, which is a cylindrical type and a switch type, and uses a magnetic sensor as a switch switching method.
  • FIG. 8 is a diagram showing a cross-sectional structure and a circuit of a cylindrical and diode-type power transmission rotating body, which is Type-A or B shown in FIG. 7.
  • FIG. 8 is a diagram showing a cross-sectional structure and a circuit of a cylindrical and diode-type power transmission rotating body, which is Type-C or D shown in FIG. 7.
  • FIG. 8 is a diagram showing a cross-sectional structure and a circuit of a power transmission rotating body of Type-C or D shown in FIG. 7 which is a cylindrical type and a switch type and uses an optical sensor as a switch switching method.
  • FIG. 8 is a diagram showing a cross-sectional structure and a circuit of a power transmission rotating body of Type-C or D shown in FIG. 7 that is a cylindrical type and a switch type and that can obtain a synchronization signal from the outside as a switch switching method.
  • FIG. 9 is a diagram showing a cross-sectional structure and a circuit of a disk-type and diode-type power transmission rotating body, which is Type-X or Y shown in FIG. 8.
  • FIG. 8 is a diagram showing a cross-sectional structure and a circuit of a power transmission rotating body of Type-C or D shown in FIG. 7 which is a cylindrical type and a switch type and uses an optical sensor as a switch switching method.
  • FIG. 8 is a diagram showing
  • FIG. 9 is a diagram showing a cross-sectional structure and a circuit of a power transmission rotating body of Type-X or Y shown in FIG. 8, which is a disk type and switch type, and uses sensor information as a switch switching method.
  • FIG. 9 is a diagram showing a cross-sectional structure and a circuit of a power transmission rotating body of Type-X or Y shown in FIG. 8, which is a disk type and a switch type, and which can obtain a synchronization signal from the outside as a switch switching method. It is a figure which shows the ensuring of the distance of a receiving electrode and a power transmission electrode in the disk-type electric power transmission rotary body. It is a figure which shows provision of the series resonance inductor in the electric power transmission rotary body of a disk system.
  • FIG. 7 and 8 are diagrams showing the results of classifying the electric field coupling type power transmission rotator 12 to which the present invention is applied in terms of structure.
  • the electric field coupling type power transmission rotating body 12 to which the present invention is applied it is simply abbreviated as “power transmission rotating body 12”.
  • the power transmission rotating body 12 shown below is an electric field coupling method.
  • FIG. 7 shows various types of cylindrical power transmission rotating body 12c.
  • the cylindrical power transmission rotating body 12c is A rotating body (for example, a rotating body including the “power transmission shaft 71”, the “power transmission side insulating layer 72”, and the “power transmission electrode 73” in FIG.
  • a fixed body for example, “ A power receiving shaft 91 ”, a“ power receiving side insulating layer 92 ”, and a“ fixed body including a power receiving electrode 93 ”)
  • One of the rotating body and the fixed body extends in the direction of the shaft so as to cover the other in a plane substantially perpendicular to the normal line of the shaft,
  • the one that exists in the center of the rotating body and the fixed body has a shaft body (for example, “power transmission shaft 71” in FIG. 9) further in the center and functions as a structure.
  • the outer cover for example, “power receiving shaft 91” in FIG. 9) is the outermost part and functions as a structure.
  • An electric field coupling type power transmission rotating body 12 One of the rotating body and the fixed body existing inside is in order from the center of the shaft, A shaft body mainly composed of a conductor or an insulator; A first insulating layer (for example, “power transmission side insulating layer 72” in FIG. 9) sandwiched when the shaft body has conductivity; A first electrode (for example, “power transmission electrode 73” in FIG. 9); It is composed by laminating The other of the rotating body and the fixed body that exists outside is sequentially from the center of the shaft, A second electrode paired with the first electrode to form a junction capacitance Cc (for example, “power receiving electrode 93” in FIG.
  • a junction capacitance Cc for example, “power receiving electrode 93” in FIG.
  • a second insulating layer sandwiched when the envelope has conductivity,
  • the envelope configured mainly of a conductor or an insulator; and It is composed by laminating
  • One of the first electrode and the second electrode is divided into two or more division numbers and connected to an AC power supply, and the other is divided more finely than the division number and controls a current flow (
  • a load R is connected via “diode pair 94” in FIG. 9, and an insulating layer (the first insulating layer and the second insulating layer) is formed on the electrode surfaces of the first electrode and the second electrode facing each other. Layer) is formed and slides in contact, or a fluid layer is sandwiched and slides. It is a power transmission rotating body.
  • the cylindrical power transmission rotating body 12c a method in which an AC power source is connected to the first electrode that is set with the shaft body (hereinafter referred to as “shaft body feeding”), and the first that is set with the outer body.
  • shaft body feeding a method in which an AC power source is connected to two electrodes
  • envelope power feeding a method in which an AC power source is connected to two electrodes
  • the power transmission unit 21 (the portion having an electrode to which an AC power supply is connected) is a rotating body
  • the power receiving unit 31 the portion having an electrode to which the load R is connected) is a fixed body.
  • the power transmission unit 21 is a fixed body and the power reception unit 31 is a rotating body. Therefore, by combining these, four types of Type-A to Type-D exist as shown in FIG.
  • the Type-A power transmission rotating body 12 is a cylindrical power transmission rotating body 12c and a shaft body feeding
  • the power transmitting unit 21 is a rotating body
  • the power receiving unit 31 is a fixed body.
  • the Type-B power transmission rotating body 12 is a cylindrical power transmission rotating body 12c and a shaft body power supply, where the power transmission unit 21 is a fixed body and the power receiving unit 31 is a rotating body.
  • the Type-C power transmission rotator 12 is a cylindrical power transmission rotator 12c and enveloping power supply, the power transmitting unit 21 is a rotating body, and the power receiving unit 31 is a fixed body.
  • the Type-D power transmission rotator 12 is a cylindrical power transmission rotator 12c and enveloping power supply, the power transmission unit 21 is a fixed body, and the power reception unit 31 is a rotator.
  • the control unit connected between the first electrode or the second electrode and the load R only needs to be capable of controlling the flow of current, and as will be described later, a diode pair, a changeover switch (including a switching element). ) Etc. can be adopted. This also applies to a disk-type power transmission rotating body 12d described later.
  • FIG. 8 shows various types of disk-type power transmission rotor 12d.
  • the disk-type power transmission rotating body 12d is A rotating body (for example, “power receiving unit 31” in FIG. 14) that rotates about a predetermined axis (for example, “axis P” in FIG. 14) and a fixed body (for example, “power transmitting unit 21” in FIG. 14) are provided.
  • the rotating body and the fixed body are provided with a support that functions as a structure
  • the rotating body and the fixed body are respectively disposed substantially parallel to predetermined planes having the axis as a normal line.
  • An electric field coupling type power transmission rotating body 12 One of the rotating body and the fixed body is seen from the predetermined viewpoint in the direction of the axis, A first support mainly composed of a conductor or an insulator; A first insulating layer sandwiched when the first support has conductivity; A first electrode; It is composed by laminating The other of the rotating body and the fixed body is viewed in the direction of the axis from the predetermined viewpoint, A second electrode paired with the first electrode to form a junction capacitance; A second insulating layer sandwiched when the second support has conductivity; The second support composed mainly of a conductor or an insulator; It is composed by laminating One of the first electrode and the second electrode is divided into two or more division numbers and connected to an AC power supply, and the other is divided more finely than the division number and has a control unit that controls the flow of current.
  • a load is connected to the electrode surface of the first electrode and the second electrode facing each other, and an insulating layer is formed and slides in contact with each other
  • the power transmission unit 21 (the portion having the electrode to which the AC power supply is connected) becomes the rotating body
  • the power receiving unit 31 (the portion having the electrode to which the load R is connected) is the fixed body.
  • the power transmission unit 21 is a fixed body and the power reception unit 31 is a rotating body. Therefore, as shown in FIG. 8, there are two types of Type-X and Type-Y. That is, the Type-X power transmission rotating body 12 is a disk-type power transmission rotating body 12d, in which the power transmission unit 21 is a rotating body and the power receiving unit 31 is a fixed body. As shown in FIG. 8, the Type-Y power transmission rotating body is a disk type, in which the power transmission unit 21 is a fixed body and the power receiving unit 31 is a rotating body.
  • FIG. 9 is a cross-sectional view and a circuit diagram of the power transmission rotating body 12c when the diode pair 94 is used in the Type-A or Type-B type.
  • the power transmission unit 21 exists on the inner side
  • the power reception unit 31 exists on the outer side.
  • the power transmission shaft 71 rotates and the power receiving shaft 91 functions like the bearing 53.
  • the Type-B power transmission rotating body 12 c is configured such that the power receiving shaft 91 rotates around the power transmitting shaft 71.
  • the power transmission shaft 71 When the power transmission shaft 71 is metal and conductive, there are two semi-cylindrical power transmission electrodes 73 via a power transmission side insulating layer 72 and connected to the high frequency power source Vf.
  • the power transmission shaft 71 When the power transmission shaft 71 is insulative, the power transmission shaft 71 and the power transmission side insulating layer 72 may be integrated.
  • the power receiving shaft 91 When the power receiving shaft 91 is metallic and conductive, the cylindrical electrodes divided are sandwiched between the power receiving side insulating layers 92 and are attached to the inner surface.
  • the power receiving shaft 91 When the power receiving shaft 91 is insulative, it may be integrated with the power receiving side insulating layer 92.
  • Each power receiving electrode 93 is provided with a diode pair 94 having a different direction, and the other end of the diode is connected by wiring according to polarity. Thereby, even when the power transmission electrode 73 is positive or negative, a current can automatically flow according to the polarity.
  • a smoothing capacitor C1 and a load R are connected to the wiring. Although the load R is simply indicated by a resistance, a DC / DC converter, a battery, and the like are connected, and a CPU, a sensor, an actuator, a transceiver, a heating element, a light emitter, and the like can be further connected.
  • FIG. 10 shows a cross-sectional view and a circuit diagram of the power transmission rotating body 12c when the diode pair 104 is used in the Type-C or Type-D type. Contrary to the power transmission rotating body 12c of FIG. 9, the power receiving unit 31 exists on the inner side and the power transmission unit 21 exists on the outer side.
  • FIG. 11 is a sectional view and a circuit diagram of the power transmission rotating body 12c when the changeover switch 122 is used instead of the diode of the Type-C or Type-D type and the magnetic sensor 123 is used as the switch switching method. Show. In this case, a line from the DC power supply 127 for driving the changeover switch driver 124 and the magnetic sensor 123 is added. Although it is indicated by a single line in the figure, it is assumed that at least two lines are included.
  • the changeover switch 122 operates the changeover switch driver 124 when the magnetic sensor 123 senses magnetism. Every time you feel a change in magnetism, you can switch like a toggle switch. Alternatively, it may be switched to a certain direction when the N pole is detected, and switched to the opposite side when the S pole is detected. In this case, the polarity of the magnet M attached to the power transmission shaft 111 is reversed up and down.
  • the magnetic sensor 123 is located behind or in the vicinity of a non-magnetic power receiving electrode 121 (for example, SUS304 or aluminum) so that the magnetism of the magnet M attached to the power transmission unit 21 can be felt.
  • a non-magnetic power receiving electrode 121 for example, SUS304 or aluminum
  • the power receiving unit 31 is a Type-D power transmission rotating body 12 c that rotates around the power transmitting unit 21
  • the power receiving unit 31 rotates around the power transmitting unit 21 and the magnetic sensor 123 is connected to the magnet M.
  • the changeover switch 122 is switched, and electric power is transmitted to the resonance circuit 126 side according to the polarity of the power transmission electrode 113.
  • FIG. 12 shows a cross-sectional view and a circuit diagram of the power transmission rotating body 12c in the case of the Type-C or Type-D type using the changeover switch 122 instead of the diode and using the optical sensor 131 as the switching method of the switch. ing.
  • a light source H such as an LED is disposed in the power transmission unit 21 instead of the magnet M, and the changeover switch 122 is switched every time light is received.
  • the power receiving electrode 132 is different in that a conductive material that transmits light, such as a mesh material, is used.
  • the light source H is placed in the gap between the power receiving electrodes 132, it is not necessary to obtain translucency.
  • Other operations are the same as those of the power transmission rotating body 12c of FIG.
  • 11 and 12 show the method using the magnet M and the light source H, but the present invention is not limited to this. Sound waves, temperature (available during low-speed rotation), vibration, and the like may be used.
  • FIG. 13 is a cross-sectional view and a circuit diagram of the power transmission rotator 12c in the case where a synchronization signal is obtained from the outside as a switching method using the changeover switch 122 instead of the diode in the Type-C or Type-D type. Show.
  • a sensor is not necessary, and although not shown, when the power transmission unit 21 or the power reception unit 31 rotates, a synchronization signal is obtained, and the switch can be switched based on the synchronization signal.
  • the synchronization signal is a system in which an optical chopper is attached to the rotation side and is taken out as a signal each time it blocks light. A mark is attached to the rotator and the image is recognized and a synchronization signal is output according to the position of the mark.
  • Various methods such as a method, a method in which a magnet M is attached to a rotating body, and a synchronization signal is output every time a magnetic sensor senses can be selected.
  • FIG. 14 shows a practical exploded view and a circuit diagram of the power transmission rotating body 12d when the diode pair 162 is used in the Type-X or Type-Y type.
  • the power transmission electrode 151 and the power reception electrode 161 are brought close to each other with the axis P aligned, and the junction capacitance Cc is generated and used.
  • the power transmission electrode 151 is composed of two arc-shaped electrodes and is connected to a high-frequency power source Vf.
  • the power receiving electrode 161 is composed of a plurality of finely divided arc-shaped electrodes, and the power receiving electrodes 161 are spaced apart from each other.
  • Each power receiving electrode 161 is connected to a diode pair 162 having a different direction, and the other end of each diode is wired according to polarity. Further, a smoothing circuit 163 and a load R are connected to each wiring.
  • the diode pair 162 and the wiring are illustrated outside the power receiving electrode 161 in the figure, but a circuit may be formed on the power receiving electrode 161 in actual use.
  • the diode pair 162 of the power receiving electrode 161 creates a current flow according to the polarity of the power transmitting electrode 151, and transmits power to the load R.
  • FIG. 15 shows a practical exploded view and a circuit diagram of the power transmission rotating body 12d when the changeover switch 171 is switched using the sensor 173 in the Type-X or Type-Y type.
  • a light source H such as a magnet M or an LED is placed as the actuator 174.
  • a changeover switch 171, a changeover switch driver 172, and a sensor 173 are connected to each power receiving electrode 161.
  • the sensor 173 detects the field from the actuator 174 according to the rotation angle of the power transmission rotating body 12d and switches the changeover switch like a toggle switch. Thereby, the wiring of the power receiving electrode 161 is switched corresponding to the polarity of the power transmitting electrode 151 and power is transmitted to the resonance circuit 126 and the load R side.
  • FIG. 16 is a practical exploded view and circuit diagram of the power transmission rotator 12d when a changeover switch 171 is used instead of a diode in the Type-X or Type-Y type, and a synchronization signal is obtained from the outside as a switching method of the switch. Is shown.
  • the resonance circuit 126 can be used, and the transmission efficiency can be slightly increased as compared with the diode method.
  • FIG. 17 shows how the gap between the power transmission electrode 151 and the power reception electrode 161 is maintained in the case of the disk-type power transmission rotating body 12d.
  • the power transmitting electrode 151 and the power receiving electrode 161 are merely brought into contact, tribology must be considered.
  • the surface accuracy of the power transmitting electrode 151 and the power receiving electrode 161 is improved, and the DLC film 191 is coated on the contacting surface using a lightweight ultrathin metal.
  • the DLC films 191 are in soft contact with each other, but at the time of high speed rotation shown in FIG. 17B (speed S2). , Air A enters between the power transmission electrode 151 and the power reception electrode 161, and a gap interval r is generated. As a result, contact is eliminated, and the DLC film 191 can be used for a long time.
  • the junction capacitance Cc is changed, but the parallel resonance circuit is used instead of the series resonance.
  • the resonance does not shift and the inductor does not work like a choke coil.
  • the series resonance inductor 201 can also be combined around the point where the air film thickness is increased and the capacitance is minimized (for the power transmission rotating body 12d illustrated in FIGS. 14 to 16). Can be applied).
  • FIG. 19 shows a multiple ring structure.
  • Two sheets of the insulating electrode substrate 211 with the first electrode 212 and the second electrode 213 are prepared.
  • One is a rotating electrode plate 221 on the rotating body side and the other is a fixed electrode plate 222 on the fixed body side, and the rotating electrode plate 221 and the fixed electrode plate 222 are brought close to each other with their electrode portions facing each other.
  • the electrode part is coated with a slidable insulating layer such as DLC and softly contacted, or a thin washer is sandwiched between the rotating electrode plate 221 and the fixed electrode plate 222 to form a very small distance. Open and install.
  • a slidable insulating layer such as DLC and softly contacted
  • a thin washer is sandwiched between the rotating electrode plate 221 and the fixed electrode plate 222 to form a very small distance. Open and install.
  • the air A may be sent between the rotating electrode plate 221 and the fixed electrode plate 222, or a repulsive force may be obtained between the rotating electrode plate 221 and the fixed electrode plate 222 by a magnetic method. Further, oil or water may be interposed between the rotating electrode plate 221 and the fixed electrode plate 222.
  • FIG. 19 shows a method of sending electric power from the machine main body 44 (fixed body) to the machine main body side shaft 45 (rotary body).
  • FIG. 20 shows a circuit diagram of a flat plate multiple ring structure.
  • the junction capacitance Cc mainly used is the junction capacitance Cc between the first electrode 231 and the first electrode 241 and between the second electrode 232 and the second electrode 242.
  • parasitic capacitances Cx and Cy are incidentally generated from the structure of the flat multiple ring to reduce transmission efficiency. This problem can be solved by subtracting the parasitic capacitances Cx and Cy from the resonance capacitors C1 and C2 using the parallel resonance circuit 301, respectively.
  • FIG. 21 shows a multiple cylinder structure. This is to transmit power using the junction capacitance Cc between the fixed electrode 251 (inner ring in the example of FIG. 21) and the rotating electrode 252 (outer ring in the example of FIG. 21). There may be a case where the fixed electrode 251 is an outer ring and the rotating electrode 252 is an inner ring.
  • FIG. 22 shows a circuit diagram when a multi-cylindrical structure is used. As in the case of FIG. 20, since parasitic capacitances Cx and Cy are generated between the cylinders, when the parallel resonant circuit 301 is used, resonance is performed by subtracting Cx and Cy from the resonant capacitors C1 and C2, respectively.
  • FIG. 23 shows fluid winding when the rotating electrode 271 rotates in the fluid F and the wound electrode 272 is on the side of the rotating electrode 271. It is a figure which shows a phenomenon.
  • the wound electrode 272 an ultrathin metal film, an FPC electrode, or the like can be used.
  • the above-described diode pair, changeover switch, and the like may be incorporated in the FPC electrode. When these are sufficiently flexible in the winding direction, the winding occurs only by simply rotating the rotating electrode 271 at a high speed, but when the electrode has an elastic force, the winding does not occur.
  • the principle is that when the rotating electrode 271 rotates, the fluid F film remains between the wound electrode 272 and the rotating electrode 271 due to the viscosity of the fluid F and flows in the direction in which the rotating electrode 271 rotates. As a result, a pressing pressure is generated from the stationary fluid F outside and is wound. Since the fluid F remains, a slight space remains between the wound electrode 272 and the rotating electrode 271 and is freed from the problem of tribology.
  • FIG. 24 shows a method of introducing the fluid F outside the wound electrode 272 in order to increase the winding force and disposing the resistor 281 against the flow of the fluid F in order to reduce the speed.
  • a porous material can be used for the resistor 281 of the fluid F. In this case, since the fluid F between the winding electrode 272 and the rotating electrode 271 is not removed, the contact friction can be reduced.
  • FIG. 25 instead of the inflow of the fluid F from the outside of the winding electrode 272, the winding electrode 272 is pressed against the rotating electrode 271 with an elastic body 291 such as foam rubber, and the adhesiveness between the rotating electrode 271 and the fluid F is shown. An example using only entrainment is shown. By selecting the fluid F or the temperature, it is possible to determine the thickness to be involved.
  • the fluid F when water is used as the fluid F, since the relative dielectric constant of water is about 80, a large junction capacitance Cc can be formed. Further, by circulating the fluid F in the sealed container, it is possible to prevent dust from entering from the outside. Since the fluid F leaks from the gap between the rotating electrodes 271, it can be replenished sequentially, or it can be circulated after removing the contaminants such as dust by passing the leaked fluid F through a filter or the like. It is also an effective method to separate the electrodes constituting the junction capacitance from the power transmission rotating body 12 illustrated in FIGS. 9 to 16 and 19 using an air bearing or an oilless bearing.
  • Switch driver and optical sensor driving power supply 142 Synchronous pulse source switch driver power supply 163 ... Smoothing circuit 173 ... Sensor 174 ... Actuator 175 ... Sensor and switch driver power supply 191 ... DLC film 192 ... Air inlet 201 ... Series resonant inductor 211 ... Insulation Electrode substrate 212, 231, 241 ... 1st electrode 213, 232, 242 ... 2nd electrode 221, ... Rotating electrode plate 222 ... Fixed electrode plate 223 ... Elastic material 251 ... Fixed Electrode 252 ... Rotating electrode 261-264 ... Electrode 271 ... Rotating electrode 272 ... Winding electrode 281 ... Resistor 291 ... Elastic body 301 ...
  • Parallel resonant circuit 401 ... Support A ... Air flow Cc ... Junction capacity F ... Fluid H ... Light source M ... Magnet P ... Axis center r ... Spacing caused by levitation (gap spacing) S1, S2 ... Speed Type ... Type of power transmission rotor

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  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

La présente invention concerne un corps rotatif de transmission d'énergie électrique du type à couplage de champ électrique qui peut être utilisé facilement par un utilisateur et permet la simplification de la structure d'axe, par comparaison à des produits classiques. Le corps rotatif de transmission d'énergie électrique du type à couplage de champ électrique comporte un corps fixe et un corps rotatif qui tourne autour d'un certaine arbre. Du corps rotatif et du corps fixe, l'un est situé à l'intérieur et est configuré par stratification, séquentiellement depuis le centre de l'arbre, d'un corps d'arbre, d'une première couche d'isolation, et d'une première électrode. L'autre est situé à l'extérieur et est configuré par stratification, séquentiellement depuis le centre de l'arbre, d'une seconde électrode qui forme une paire avec la première électrode pour former une capacité de jonction, d'une seconde couche d'isolation, et d'un corps extérieur entourant. Entre la première électrode et la seconde électrode, l'une est segmentée en un nombre de segmentation égal ou supérieur à 2 et est connectée à une alimentation électrique en courant alternatif, et l'autre est segmentée moins que le nombre de segmentation mentionné ci-dessus et est connectée à une charge par l'intermédiaire d'une unité de commande qui commande le flux de courant. La première électrode et la seconde électrode ont chacune une couche d'isolation formée sur la surface de l'électrode tournée vers l'autre, et se déplacent de façon coulissante tout en étant en contact ou se déplacent de façon coulissante avec une couche de fluide intercalée entre ces dernières.
PCT/JP2016/063573 2015-05-07 2016-05-02 Corps rotatif de transmission d'énergie électrique WO2016178425A1 (fr)

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CN115663932A (zh) * 2022-09-07 2023-01-31 中国科学院电工研究所 一种大电流旋转传输组合式馈电装置

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JP7389089B2 (ja) * 2019-07-24 2023-11-29 京セラ株式会社 液体吐出ヘッド、およびそれを用いた記録装置

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WO2013108893A1 (fr) * 2012-01-18 2013-07-25 古河電気工業株式会社 Système de transmission d'électricité sans fil, dispositif de transmission d'électricité et dispositif de réception d'électricité
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JP2011019293A (ja) * 2009-07-07 2011-01-27 Takenaka Komuten Co Ltd 電力供給システム
JP2014526232A (ja) * 2011-08-16 2014-10-02 コーニンクレッカ フィリップス エヌ ヴェ 容量式ワイヤレス給電システムの受電側電極
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WO2019069914A1 (fr) * 2017-10-02 2019-04-11 株式会社ＥｘＨ Système d'alimentation électrique, procédé de configuration et dispositif de transport
CN115663932A (zh) * 2022-09-07 2023-01-31 中国科学院电工研究所 一种大电流旋转传输组合式馈电装置
CN115663932B (zh) * 2022-09-07 2023-08-15 中国科学院电工研究所 一种大电流旋转传输组合式馈电装置

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