JP2022188240A - Non-contact power supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a non-contact power supply device in which a change in the load of one load circuit cannot easily affect supply of power necessary to operate other load circuits.

SOLUTION: A non-contact power supply device 1 includes: a power sending unit 2; a plurality of transmitters 3A, 3B, for example, having a pair of conductors for transmitters; a plurality of load circuits 4A, 4B, for example; and a plurality of inductance elements 5A, 5B, for example. The first inductance element 5A is connected to the first transmitter 3A, the first load circuit 4A is connected to a first series body 8A made of the first transmitter 3A and the first inductance element 5A, the second inductance element 5B is connected to the first transmitter 3B, the second load circuit 4B is connected to a second series body 8B made of the second transmitter 3B and the second inductance element 5B. The first transmitter 3A, the first inductance element 5A, the second transmitter 3B, and the second inductance element 5B resonate at the frequency of the power sending unit 2.

SELECTED DRAWING: Figure 14

COPYRIGHT: (C)2023,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to a contactless power supply device that supplies power via a contactless portion.

A contactless power supply device can be used for various purposes. For example, it is widely used to supply power to a portable device via a non-contact portion between a power supply base connected to a commercial power source and the device to charge the device. In addition, as shown in Patent Document 1 and Japanese Patent Application No. 2017-168091, it can be used in robots that supply power to necessary circuits via joint portions as non-contact portions. Patent document 1 performs power transmission in a non-contact portion by electromagnetic induction, and Japanese Patent Application No. 2017-168091 performs power transmission in a non-contact portion by a pair of opposing transmitter conductors.

JP-A-07-100786

However, when a non-contact power supply device is used for a robot, it is common to have a plurality of joints (non-contact parts) and a plurality of circuits (load circuits) through which power is supplied. It is also possible that the fluctuations affect other load circuits such that the other load circuits do not receive enough power to operate.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a device having a plurality of non-contact portions and a plurality of load circuits, in which even if the load of one load circuit fluctuates, the operation of the other load circuits is prevented. To provide a non-contact power feeding device in which the supply of electric power required for a power supply is hardly affected.

In order to achieve the above object, a contactless power supply device according to claim 1 has a power transmitter for transmitting AC power and a pair of opposing transmitter conductors, and from one side of the pair of transmission conductors A plurality of transmitters, which transmit power from the power transmitter to the other side in a non-contact manner and are provided in series, a plurality of load circuits, and a plurality of inductance elements. a first inductance element among the plurality of inductance elements is connected to the transmission conductor on the other side or the one side of the first transmitter among the plurality of transmitters, A first load circuit of the plurality of load circuits is connected to the other side of a first series body composed of the first transmitter and the first inductance element, and the plurality of transmitters A second inductance element of the plurality of inductance elements is connected to the transmission conductor on the other side or the one side of the second transmitter of the A second load circuit of the plurality of load circuits is connected to the other side of the second series body composed of two inductance elements, and the pair of transmitter conductors of the first transmitter and the first transmitter conductor are connected to the other side of the second series body. The one inductance element and the pair of transmitter conductors of the second transmitter and the second inductance element resonate at the frequency of the power transmitter.

According to a second aspect of the present invention, there is provided a non-contact power supply device according to the first aspect, wherein the power transmitter is connected to one side of the first series body.

According to claim 3, in the contactless power supply device according to claim 1 or 2, the pair of transmitter conductors is flat.

According to a fourth aspect of the present invention, in the wireless power supply device of the third aspect, the pair of transmitter conductors are disc-shaped.

According to a fifth aspect of the present invention, there is provided a contactless power supply device according to the first or second aspect, wherein the pair of transmitter conductors are coaxially cylindrical.

The contactless power supply device according to claim 6 is the contactless power supply device according to any one of claims 1 to 5, wherein the first load circuit and the second load circuit each include the power transmitter a rectifier circuit to which a part of the AC power sent from the rectifier is input; and a DCDC converter to which the DC voltage rectified and generated by the rectifier is input.

The contactless power supply device according to claim 7 is the contactless power supply device according to any one of claims 1 to 6, wherein the plurality of transmitters of the contactless power supply device respectively constitute joints and mutually Each of the pair of transmitter conductors is fixed to each of the adjacent joint components.

The contactless power supply device according to claim 8 is the contactless power supply device according to any one of claims 1 to 7, wherein the first series body is accommodated in a first housing, The second series body is housed in a second housing.

The contactless power supply device according to claim 9 is the contactless power supply device according to claim 8, wherein the first inductance element of the first series body and the second inductance element of the second series body are , a toroidal coil wound around a magnetic core.

According to the contactless power supply device of the present invention, in a device having a plurality of contactless portions and a plurality of load circuits, even if the load of one load circuit fluctuates, the supply of power necessary for the operation of other load circuits is affected. It will be difficult to do.

BRIEF DESCRIPTION OF THE DRAWINGS It is a non-contact electric power supply which concerns on embodiment of this invention, Comprising: (a) is a block diagram, (b) is an equivalent circuit diagram. FIG. 3A is a side view, and FIG. 3B is a schematic perspective view showing a case where a pair of transmitter conductors of the non-contact power feeding device is disk-shaped. FIG. 11 is a side view showing a modification of the pair of transmitter conductors shown in FIG. ) is a pair of transmitter conductors arranged in parallel. This shows a case where a pair of transmitter conductors of the non-contact power feeding device is cylindrical. (a) is a schematic perspective view, (b) is a cross-sectional view, and (c) is a cross-sectional view obtained by modifying (b). Fig. 2 shows an example of a joint in which the same non-contact power feeding device is provided in a robot and an outline of the periphery thereof, in which (a) is a plan view and (b) is an enlarged plan view of a part thereof; . Fig. 11 shows an outline of another example of a joint and its surroundings in which the same contactless power supply device is provided in a robot, where (a) is a plan view and (b) is an enlarged plan view cross-sectional view of a part thereof; is. Fig. 10 shows an outline of still another example of a joint and its surroundings in which the same contactless power supply device is provided in a robot; It is a diagram. FIG. 1 of the same non-contact power feeding device is modified, wherein (a) is a block diagram and (b) is an equivalent circuit diagram. Fig. 2 shows another example of the non-contact power feeding device, in which (a) is a block diagram and (b) is an equivalent circuit diagram. FIG. 9 of the non-contact power feeding device as above is modified, wherein (a) is a configuration diagram and (b) is an equivalent circuit diagram. It is a characteristic view which shows the frequency characteristic in the simulation of the non-contact electric power supply same as the above. Fig. 3 is a characteristic diagram showing the mutual influence of load circuits in the simulation of the contactless power supply device, wherein (a) changes the load of the second load circuit, and (b) shows the load of the first load circuit; is changed when Still another example of the non-contact power feeding device is shown, wherein (a) is a block diagram and (b) is an equivalent circuit diagram. FIG. 13 of the non-contact power feeding device is modified, in which (a) is a block diagram and (b) is an equivalent circuit diagram. FIG. 10 shows the non-contact power feeding device shown in FIG. 10, in which the load circuit includes a rectifier circuit and a DCDC converter, where (a) is a configuration diagram and (b) is an equivalent circuit diagram. The DCDC converter of the non-contact electric power supply same as the above is shown, (a) is an equivalent circuit diagram, (b) is a characteristic diagram. FIG. 15 is a characteristic diagram showing the mutual influence of load circuits in an experiment conducted using the circuit configuration of FIG. In b), the load of the first load circuit is changed, and in (c), the load of the third load circuit is changed. The first series body (or second series body) of the non-contact power supply device as above is housed in the first housing (or second housing), and (a ) is a front view cross-sectional view, (b) is a cross-sectional view cut along the plane indicated by line AA in (a), and (c) is a cross-sectional view cut along the plane indicated by line BB in (a). .

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. As shown in FIG. 1A, a contactless power supply device 1 according to an embodiment of the present invention includes a power transmitter 2, two transmitters (first and second transmitters) 3A and 3B, and 2 It includes load circuits (first and second load circuits) 4A and 4B and two inductance elements (first and second inductance elements) 5A and 5B.

The power transmitter 2 transmits AC power. The frequency f of the power transmitter 2 is not limited, but can be, for example, one frequency in the range of 500 KHz to 50 MHz.

The first transmitter 3A has a pair of transmitter conductors 3Aa and 3Ab facing each other, and a predetermined gap is provided between them. Electric power is transmitted from the power transmitter 2 toward 3Ab in a non-contact manner. The second transmitter 3B also has the same structure as the first transmitter 3A, and has a pair of opposing transmitter conductors 3Ba and 3Bb with a predetermined gap provided therebetween. , from one side 3Ba of the pair of transmission conductors to the other side 3Bb, the electric power is transmitted from the power transmitter 2 in a non-contact manner. The two transmitters 3A, 3B are provided in series, and power from the power transmitter 2 is transmitted to the second transmitter 3B after passing through the first transmitter 3A.

Also, as shown in FIG. 1B, the first transmitter 3A has a capacitance value CA of the capacitance component in a pair of transmitter conductors _3Aa and 3Ab, and the second transmitter 3B has a pair of conductors 3Aa and 3Ab. The transmitter conductors 3Ba and _3Bb have a capacitance value CB of the capacitive component.

The transmitter conductors 3Aa, 3Ab, 3Ba, 3Bb are usually made of metal (for example, copper). A pair of transmitter conductors 3Aa and 3Ab constituting the first transmitter 3A and a pair of transmitter conductors 3Ba and 3Bb constituting the second transmitter 3B are shown in FIGS. In addition, it can be a flat plate shape such as a disk shape (for example, a diameter of 5 cm or more and a gap of 0.5 cm or more) provided coaxially.

Electric wires 6Aa, 6Ab and 6Ba, 6Bb are connected to the pair of transmitter conductors 3Aa, 3Ab and the pair of transmitter conductors 3Ba, 3Bb (see FIGS. 2A and 2B). The electric wirings 6Aa, 6Ab and 6Ba, 6Bb may be connected near the central portions of the rear surfaces (opposite surfaces of the mutually facing surfaces) of the pair of transmitter conductors 3Aa, 3Ab and the pair of transmitter conductors 3Ba, 3Bb. , as shown in FIG. Moreover, each of the pair of transmitter conductors 3Aa and 3Ab and the pair of transmitter conductors 3Ba and 3Bb can be arranged in parallel as shown in FIG. 3(b). .

Also, as shown in FIG. 4A, the pair of transmitter conductors 3Aa and 3Ab and the pair of transmitter conductors 3Ba and 3Bb are coaxially provided cylindrical shapes (for example, a diameter of 5 cm or more and a gap of 0). .5 cm or more). In this case also, the connection positions of the electrical wirings 6Aa, 6Ab and 6Ba, 6Bb can be changed, and as shown in FIGS. Each of the transmitter conductors 3Ba, 3Bb may be one or a plurality of conductors arranged in parallel. In addition, in FIG. 4, the thing of bottomed cylinder shape is shown.

Here, when the contactless power supply device 1 is provided in a robot having a plurality of joints, the pair of transmitter conductors 3Aa and 3Ab and the pair of transmitter conductors 3Ba and 3Bb are connected to one side 3Aa (or 3Ba). ) and the other side 3Ab (or 3Bb) are coaxial and rotate relatively, so that they are preferably disk-shaped or cylindrical so as to be electrically invariant. 5, 6 and 7 schematically show joints of a pair of transmitter conductors 3Ba and 3Bb and their surroundings as an example. C in the drawing indicates the central axis of the pair of transmitter conductors 3Ba and 3Bb.

Further, when the contactless power supply device 1 is provided in a robot having a plurality of joints, each of the pair of transmitter conductors 3Aa and 3Ab is connected to each of the joint-constituting members 1a that constitute joints and are adjacent to each other. Fixed. The same applies to the pair of transmitter conductors 3Ba and 3Bb. In the configurations shown in FIGS. 5, 6 and 7, the load circuit 4A drives and controls the stator 7a fixed to one joint component 1a, and the rotor 7b and the rotating member 7c fixed thereto. As a result, the other joint component 1a fixed to the rotating member 7c rotates together with the rotating member 7c. In addition, reference numeral 7c' in FIG. 7(b) is at a symmetrical position of the rotating member 7c, and is fixed to the other joint component 1a (in the figure, the upper joint component 1a). It is a rotating member coupled to one joint component 1a so that the other joint component 1a can be freely rotated with respect to the member 1a (the lower joint component 1a in the figure).

The first and second load circuits 4</b>A and 4</b>B are circuits for power supply of the contactless power supply device 1 and consume power from the power transmitter 2 . For example, when the contactless power supply device 1 is provided in a robot having a plurality of joints, the first load circuit 4A of the two load circuits 4A and 4B is the angle between the adjacent joint components. can be an articulation control that can change the . Also, the second load circuit 4B of the two load circuits 4A and 4B can be an actuator or the like for the intended work of the robot. The first and second load circuits 4A, _4B have equivalent load resistances of resistance values _RA , RB.

The first and second inductance elements 5A, _5B have predetermined inductance values _LA , LB, respectively. One terminal of the first inductance element 5A is connected to the transmission conductor 3Ab on the other side of the first transmitter 3A. Also, as shown in FIG. 8, the first inductance element 5A can be connected to the transmission conductor 3Aa on one side of the first transmitter 3A at the terminal on the other side. The first transmitter 3A and the first inductance element 5A constitute a first series body 8A, and the other side of the first series body 8A is connected to a first load circuit 4A. The power transmitter 2 is connected to one side of the first series body 8A.

The second inductance element 5B has one terminal connected to the other transmission conductor 3Bb of the second transmitter 3B. Also, the second inductance element 5B can be connected to the transmission conductor 3Ba on one side of the second transmitter 3B at the terminal on the other side (see FIG. 8). The second transmitter 3B and the second inductance element 5B constitute a second series body 8B, and the other side of the second series body 8B is connected to a second load circuit 4B.

In the contactless power supply device 1, a pair of transmitter conductors _3Aa and _3Ab having a capacitance value of CA, a first inductance element 5A having an inductance value of LA, and a pair of transmitter conductors 3Ba and _3Bb having a capacitance value of CB, A second inductance element _5B of inductance value LB may be made to resonate at the frequency f of the transmitter 2 . More specifically, a pair of transmitter conductors _3Aa and _3Ab having a capacitance value CA and a first inductance element 5A having an inductance value LA form a series resonant circuit. Therefore, at the resonant frequency f, the imaginary part of the impedance of this series resonant circuit becomes 0, and the first load circuit 4A fed through this series resonant circuit consumes electric power inversely proportional to the resistance value _RA . . _A pair of transmitter conductors 3Ba and 3Bb having a capacitance value of CB and a second inductance element _5B having an inductance value of LB form a series resonant circuit. Therefore, at the resonant frequency f, the imaginary part of the impedance of this series resonant circuit becomes 0, and the second load circuit _4B fed through this series resonant circuit consumes power inversely proportional to the resistance value RB. .

In addition, as shown in FIG. 9, the contactless power supply device 1 includes a third load circuit 4C that consumes power from the power transmitter 2 without passing through the first transmitter 3A (or the second transmitter 3B). can be provided. In that case, a series body of a third inductance element 5C having an inductance value L _C and a capacitive element 9C having a capacitance value C _C is provided, and one end of this series body is connected to the transmission conductor 3Aa on one side of the first transmitter 3A. , and the other end can be connected to the third load circuit 4C. In this case, the series body of the third inductance element 5C with the inductance value L _C and the capacitive element 9C with the capacitance value C _C forms a series resonance circuit that resonates at the resonance frequency f. Then, the third load circuit 4C fed through this series resonant circuit consumes power inversely proportional to its resistance value _RC .

It should be noted that in the vicinity of the power transmitter 2, it is common that there are few restrictions on the arrangement of components, wiring, and the like. For example, in a robot, if it does not pass through joints, it is usually possible to arrange and wire the necessary parts without much restriction. Therefore, power can be supplied to the third load circuit 4C by various methods, not limited to the above.

It is also possible to omit the third inductance element 5C and the capacitive element 9C. In addition to omitting the third inductance element 5C and the capacitive element 9C, as shown in FIG. 10, the circuit configuration of the first series body 8A and the second series body 8B similar to that shown in FIG. can be

Also, the third load circuit 4C, for example, replaces the first load circuit 4A with a joint drive capable of changing the angle between the adjacent joint components 1a, 1a at the joint of the robot in which the second transmitter 3B is provided. The controller can be a joint drive controller that can change the angle between adjacent joint components at the joint where the first transmitter 3A is provided.

Next, a simulation performed with the circuit shown in FIG. 9 of the contactless power supply device 1 will be described. The capacitance value CA was _196.2 pF, and the capacitance value CB was _182.0 pF. These values were obtained by actually manufacturing and measuring a pair of transmitter conductors 3Aa and 3Ab and a pair of transmitter conductors 3Ba and 3Bb having a disc shape with a diameter of about 25 cm and an interval of about 1 cm. . The inductance values L _A , L _B , and L _C were set to 129.1 μH, 139.2 μH, and 84.4 μH, respectively. The capacitance value _CC was set to 300 pF. The resistance values R _A and R _B were normally set to 100Ω (when not changed). The resistance value R _C was set to 50Ω.

FIG. 11 shows the frequency dependence of the real part Z _re and the imaginary part Z _im of the impedance viewed from the output terminal of the power transmitter 2 . From FIG. 11, it can be seen that resonance occurs at a frequency of 1 MHz.

FIG. 12(a) shows the results when the AC power of the power transmitter 2 is set at a frequency of 1 MHz and an amplitude (effective value) of 30 V, and the resistance value RB of the second load circuit _4B is changed, that is, when the load is changed. Power consumption PA of the first load circuit 4A and power consumption _PB of the second load circuit _4B are shown. It can be seen from FIG. 12(a) that even if the resistance value RB of the second load circuit _4B is changed, the first load circuit 4A is not affected and its power consumption _PA is kept constant. FIG. 12(b) shows the results when the AC power of the power transmitter 2 is set at a frequency of 1 MHz and an amplitude (effective value) of 30 V, and the resistance value _RA of the first load circuit 4A is changed, that is, when the load is changed. Power consumption PA of the first load circuit 4A and power consumption _PB of the second load circuit _4B are shown. It can be seen from FIG. 12(b) that even if the resistance value _RA of the first load circuit 4A is changed, the second load circuit _4B is not affected and its power consumption PB is kept constant.

It is clear from the circuit configuration of the contactless power supply device 1 that the third load circuit 4C is not affected by the other first and second load circuits 4A and 4B.

As described above, the contactless power supply device 1 has a plurality of load circuits, and even if the load of one load circuit fluctuates, the supply of power required for the operation of other load circuits is less likely to be affected. As shown in FIGS. 13 and 14, the non-contact power feeding device 1 is connected to the two first and second transmitters 3A and 3B in series with one or a plurality of them for similar transmission. and a load circuit 4D, . . . The same is true for other configurations.

Next, a non-contact power supply device 1 suitable for use of an inductance element with a large loss resistance will be described. FIG. 15 shows a circuit configuration in which the load circuits 4A, 4B, and 4C in the contactless power supply device 1 shown in FIG. be. A part of the AC power sent from the power transmitter 2 is input to each of the rectifier circuits 4Aa, 4Ba, and 4Ca. DC voltages rectified and generated by rectifier circuits 4Aa, 4Ba, and 4Ca are input to the DCDC converters 4Ab, 4Bb, and 4Cb.

DCDC converters 4Ab, 4Bb, and 4Cb convert their load impedance R _OUT to input impedance R _IN as shown in FIG. 16(a). The _input impedance R _IN is approximately equal to the load impedance R _OUT where the load impedance R _OUT is greatest, as shown in FIG _. , and where the load impedance _{R_OUT} is small, it decreases with a slope similar to that of the load impedance _{R_OUT} as the load impedance _{R_OUT} decreases. Thus, the change in input impedance R _IN is approximately one tenth the change in load impedance R _OUT over the full power range of load impedance R _OUT .

Therefore, even if the loss resistance of the inductance elements 5A and 5B is large, the resulting voltage drop can be made extremely small.

17(a) to (c) show the results of experiments performed using the circuit configuration of FIG. The capacitance value C _A is 772 pF, and this value is obtained by connecting two discs with a diameter of about 15 cm in parallel (see FIG. 3(b)) and a pair of transmitter conductors 3 Aa with a dielectric sandwiched therebetween with an interval of about 1 mm. , 3Ab. The capacitance value CB is 703 pF, and this value is obtained by arranging two discs with a diameter of about 14 cm in parallel (see FIG. 3( _b )) and placing a dielectric between a pair of conductors 3Ba for a transmitter with an interval of about 1 mm. , 3Bb. The inductance element 5A has an inductance value LA of 32.8 μH and a loss resistance of _5.5Ω . The inductance element 5B has an inductance value LB of 36.0 μH and a loss resistance of _6.1Ω . DCDC converters 4Ab, 4Bb, and 4Cb have an output voltage of 4V. The AC power of the power transmitter 2 has a frequency of 1 MHz and an effective value of 10V.

FIG. 17(a) shows the power consumption P A of the first load circuit 4A and the power consumption P _A of the second load circuit 4B when the resistance value R _B of the second load circuit 4B is changed, that is, when the load is changed. and the power consumption _{P C of} the third load circuit 4C. The resistance value _RA of the first load circuit 4A was set to 380Ω, and the resistance value _RC of the third load circuit 4C was set to 120Ω. From FIG. 17(a), even if the resistance value R _B of the second load circuit 4B is changed, the first load circuit 4A and the third load circuit 4C are not affected, and the power consumption P _A and P _C are It can be seen that it is kept constant. FIG. 17B shows the power consumption P _A of the first load circuit 4A and the second load circuit 4B when the resistance value R _A of the first load circuit 4A is changed, that is, when the load is changed. and the power consumption _{P C of} the third load circuit 4C. The resistance value RB of the second load circuit _4B is set to 120Ω, and the resistance value _RC of the third load circuit 4C is set to 380Ω. From FIG. 17(b), even if the resistance value _RA of the first load circuit 4A is changed, the second load circuit _4B and the third load circuit _4C are not affected, and their power consumption PB and PC are It can be seen that it is kept constant. FIG. 17(c) shows the power consumption P A of the first load circuit 4A and the power consumption P _A of the second load circuit 4B when the resistance value R _C of the third load circuit 4C is changed, that is, when the load is changed. and the power consumption _{P C of} the third load circuit 4C. The resistance value _RA of the first load circuit 4A was set to 120Ω, and the resistance value RB of the 32nd load circuit _4B was set to 380Ω. From FIG. 17(c), even if the resistance value R _C of the third load circuit 4C is changed, the first load circuit 4A and the second load circuit 4B are not affected, and their power consumption P _A and P _B are It can be seen that it is kept constant. In FIGS. 17A to 17C, P _IN indicates the power consumption P _A , P _B , and P _{C ,} the power consumed by the loss resistance of the inductance elements 5A and 5B, DCDC It is the total power consumed by summing the power consumed by converters 4Ab, 4Bb, and 4Cb.

The first series body 8A (second series body 8B) is preferably accommodated in the first housing (second housing) 10A as shown in FIG. Then, for example, it can be easily attached to existing joints. A terminal 10C of the first series body 8A (second series body 8B) is fixed to the first housing (second housing) 10A. Bearings 10D and 10D are provided between the first housing (second housing) 10A and the shaft 10B, and the shaft 10B is connected to the first series body 8A (second series body 8B). It can be another terminal. The other side transmission conductor 3Ab (the other side transmission conductor 3Bb) of the first transmitter 3A (second transmitter 3B) is fixed to the shaft 10B. can be coaxially and relatively rotatable with respect to the transmission conductor 3Aa (the transmission conductor 3Ba on one side). The first inductance element 5A (second inductance element 5B) of the first series body 8A (second series body 8B) is preferably a toroidal coil wound around a magnetic core (ferrite core or the like). Then, the first inductance element 5A (second inductance element 5B) can be formed in a flat plate shape similar to the first transmitter 3A (second transmitter 3B), and the shaft 10B passes through the center. and the magnetic flux can be well confined.

Although the contactless power supply device according to the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and may be modified within the scope of the claims. design changes are possible. Further, the contactless power supply device 1 can be used for various purposes other than the robot described above.

1 Contactless Power Supply Circuit 1a Joint Component 2 Power Transmitter 3A, 3B, 3D Transmitter 3Aa, 3Ab, 3Ba, 3Bb, 3Da, 3Db Transmitter Conductor 4A, 4B, 4C, 4D Load Circuit 4Aa, 4Ba, 4Ca Rectifier Circuit 4Ab , 4Bb, 4Cb DCDC converters 5A, 5B, 5C, 5D inductance element 6Aa, 6Ab, 6Ba, 6Bb electrical wiring 7a stator 7b rotor 7c rotating member 8A first series body 8B second series body 9C capacitive element 10A housing 10B Shaft 10C Terminal 10D Bearing

In order to achieve the above object, a contactless power supply device according to claim 1 has a power transmitter for transmitting AC power and a pair of opposing transmitter conductors, and from one side of the pair of transmission conductors A plurality of transmitters, which transmit power from the power transmitter to the other side in a non-contact manner and are provided in series, a plurality of load circuits, and a plurality of inductance elements. a first inductance element among the plurality of inductance elements is connected to the transmission conductor on the other side or the one side of the first transmitter among the plurality of transmitters, A first load circuit of the plurality of load circuits is connected to the other terminal of the first series body composed of the first transmitter and the first inductance element. A second inductance element of the plurality of inductance elements is connected to the transmission conductor on the other side or the one side of the second transmitter of the transmitters, and the second transmitter and the The other terminal of the first series body is directly connected to one terminal of the second series body composed of the second inductance element, and the other terminal of the second series body is connected to , to which a second load circuit of the plurality of load circuits is connected, a pair of transmitter conductors of the first transmitter and a pair of transmitter conductors of the first inductance element and the second transmitter; The conductor and the second inductance element are characterized by resonating at the frequency of the power transmitter.

Claims (9)

a transmitter for transmitting AC power;
It has a pair of transmitter conductors facing each other, and performs non-contact transmission of electric power from the power transmitter from one side of the pair of transmission conductors to the other side, and is provided in series with a plurality of conductors. a transmitter of
a plurality of load circuits;
a plurality of inductance elements;
and
A first inductance element among the plurality of inductance elements is connected to the transmission conductor on the other side or the one side of the first transmitter among the plurality of transmitters, and the first inductance element among the plurality of inductance elements is connected. A first load circuit of the plurality of load circuits is connected to the other side of the first series body composed of the transmitter and the first inductance element,
A second inductance element among the plurality of inductance elements is connected to the transmission conductor on the other side or the one side of the second transmitter among the plurality of transmitters, A second load circuit of the plurality of load circuits is connected to the other side of a second series body composed of the transmitter and the second inductance element,
A pair of transmitter conductors and the first inductance element of the first transmitter and a pair of transmitter conductors and the second inductance element of the second transmitter may resonate at the frequency of the power transmitter. A contactless power supply device characterized by: In the contactless power supply device according to claim 1,
The contactless power supply device, wherein the power transmitter is connected to one side of the first series body. In the contactless power supply device according to claim 1 or 2,
A non-contact power feeding device, wherein the pair of transmitter conductors is flat. In the contactless power supply device according to claim 3,
A non-contact power feeding device, wherein the pair of transmitter conductors are disk-shaped. In the contactless power supply device according to claim 1 or 2,
A non-contact power feeding device, wherein the pair of transmitter conductors are coaxially cylindrical. In the contactless power supply device according to any one of claims 1 to 5,
The first load circuit and the second load circuit are respectively a rectifier circuit to which part of the AC power sent from the power transmitter is input, and a DCDC to which a DC voltage generated by rectification by the rectifier circuit is input. A contactless power supply device comprising: a converter; In the contactless power supply device according to any one of claims 1 to 6,
A contactless power supply device according to claim 1, wherein each of said plurality of transmitters of said contactless power supply device comprises a joint and each of said pair of transmitter conductors is fixed to each of adjacent joint forming members. In the contactless power supply device according to any one of claims 1 to 7,
The first series body is housed in a first housing,
A contactless power supply device, wherein the second series body is accommodated in a second housing. In the contactless power supply device according to claim 8,
A contactless power supply device, wherein the first inductance element of the first series body and the second inductance element of the second series body are toroidal coils wound around a magnetic core.

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