JP6918670B2 - Power transmission electrode device and wireless power supply system using it - Google Patents

Description

The present invention relates to a power transmission electrode device and a wireless power supply system using the same.

When power is supplied wirelessly using electric field resonance, it is necessary to extend the total length of the power transmission electrode device in order to transmit power over a longer range. However, when the total length of the power transmission electrode device is increased, a standing wave is likely to be generated in the power transmission electrode device (see Reference 1). When a standing wave is generated in the power transmission electrode device, the alignment with the power reception electrode device is deviated depending on the position of the power transmission electrode device. As a result, there is a problem that the power transmission efficiency is lowered.

Japanese Unexamined Patent Publication No. 2014-227205

Therefore, an object of the present invention is to reduce the generation of standing waves by dividing the electrodes, suppress the decrease in power transmission efficiency, and provide a power transmission electrode device having high durability between the connected electrodes. The purpose is to provide the wireless power transmission system used.

In the invention according to claim 1, the substrate on which the capacitor is arranged is sandwiched between the first electrode member and the second electrode member in the plate thickness direction. The stacked first electrode member, substrate, and second electrode member are held by the holding member. That is, the substrates of the first electrode member and the second electrode member are sandwiched in the plate thickness direction, and these are integrally held by the holding member. As a result, the stress in the tensile and torsional directions applied to the substrate from the first electrode member and the second electrode member is reduced. Therefore, the concentration of stress originating from the substrate is reduced, and the durability between the first electrode member and the second electrode member to be connected can be improved.

Further, in the invention according to claim 1, a capacitor is arranged on the substrate. By sandwiching the substrate on which the capacitor is arranged between the first electrode member and the second electrode member, the first electrode member and the second electrode member are connected, and the phase of the high frequency is shifted by the capacitor. The generation of standing waves is suppressed. Therefore, the deviation of matching due to the influence of the standing wave can be reduced, and the power transmission efficiency can be improved.

In the invention according to claim 4, the power receiving electrode member faces both one end face side and the other end face side of the first electrode member and the second electrode member. That is, the power receiving electrode members face each other with the first electrode member and the second electrode member sandwiched in the plate thickness direction. By sandwiching the power transmission electrode device between the power reception electrode members in this way, even if the distance between the power transmission electrode device and the power reception electrode member changes, the capacitance between the power transmission electrode device and the power reception electrode member increases. Change is reduced. For example, when the distance between one end face side of the power transmitting electrode device and the power receiving electrode member becomes close due to a change in the distance between the power transmitting electrode device and the power receiving electrode member, the power receiving electrode member sandwiching the power transmitting electrode device is sandwiched. Increases the distance between the power transmission electrode device and the other end face side. Therefore, even if the distance between the power transmission electrode device and the power receiving electrode member changes, the change in the overall capacitance between the power transmission electrode device and the power receiving electrode member becomes gradual. As a result, even when a step is formed between the first electrode member and the second electrode member in the power transmission electrode device by sandwiching the substrate, the influence of this step is reduced by sandwiching the power transmission electrode device between the power receiving electrode members. Will be done. Further, by sandwiching the power transmission electrode device between the power receiving electrode members, the area where the power transmission electrode device and the power receiving electrode member face each other is doubled as compared with the case where they simply face each other. Therefore, the power supply efficiency by radio using electric field coupling is improved. Therefore, the deviation of matching due to the influence of the standing wave can be reduced, the influence of the change in capacitance can be reduced, and the power transmission efficiency can be improved.

Schematic diagram showing the main part of the power transmission electrode device according to the first embodiment Arrow view from the direction of arrow II in FIG. Schematic diagram showing a power transmission electrode device according to the first embodiment Schematic diagram showing a surface of a substrate on the first electrode member side in the power transmission electrode device according to the first embodiment. Schematic diagram showing a surface of a substrate on the second electrode member side in the power transmission electrode device according to the first embodiment. Schematic diagram showing a main part of a power transmission electrode device according to a comparative example Schematic diagram showing the main part of the power transmission electrode device according to the second embodiment. Schematic diagram showing a CLC circuit applied to the power transmission electrode apparatus according to the second embodiment. Schematic diagram showing a surface of a substrate on the first electrode member side in the power transmission electrode device according to the second embodiment. Schematic diagram showing a surface of a substrate on the second electrode member side in the power transmission electrode device according to the second embodiment. Schematic perspective view showing a transport device to which a wireless power supply system including a power transmission electrode device according to a second embodiment is applied. Schematic diagram showing the configuration of the power transmission electrode device and the power reception electrode member in the wireless power supply system including the power transmission electrode device according to the second embodiment.

Hereinafter, a plurality of embodiments of the power transmission electrode device will be described with reference to the drawings. In the plurality of embodiments, substantially the same constituent parts are designated by the same reference numerals, and the description thereof will be omitted.
(First Embodiment)
As shown in FIGS. 1 to 3, the power transmission electrode device 10 according to the first embodiment includes a first electrode member 11, a second electrode member 12, a substrate 13, and a holding member 14. Both the first electrode member 11 and the second electrode member 12 are made of aluminum, copper, iron, or the like. In the case of the present embodiment, the first electrode member 11 and the second electrode member 12 are formed in a thin plate shape having a thickness of about several mm. The first electrode member 11 and the second electrode member 12 are not limited to the linear plate as shown in FIG. 3, and may be a plate having an arbitrary shape such as a curved shape or a bent shape.

The substrate 13 is sandwiched between the first electrode member 11 and the second electrode member 12 so as to be overlapped in the plate thickness direction. That is, the substrate 13 is sandwiched between the first electrode member 11 and the second electrode member 12 in the plate thickness direction. The substrate 13 is formed in a plate shape with an insulator such as resin. The substrate 13 has an end surface 15 of the first electrode member 11 and an end surface 16 on the second electrode member 12 side. As shown in FIG. 4, the substrate 13 has a wiring portion 17 and a capacitor 18 on one end surface 15 in the plate thickness direction. Further, as shown in FIG. 5, the substrate 13 has a wiring portion 19 on the other end surface 16. The wiring portion 17 and the wiring portion 19 are formed of a conductive material in the form of a film. The wiring unit 17 and the wiring unit 19 are electrically connected by a through hole 21 or the like. The wiring portion 17 has a contact portion 22. When the substrate 13 is sandwiched between the first electrode member 11 and the second electrode member 12, the contact portion 22 comes into contact with the first electrode member 11. When the contact portion 22 and the first electrode member 11 come into contact with each other, the wiring portion 17 and the first electrode member 11 are electrically connected to each other. Further, the wiring portion 19 has a contact portion 23. When the substrate 13 is sandwiched between the first electrode member 11 and the second electrode member 12, the contact portion 23 comes into contact with the second electrode member 12. When the contact portion 23 and the second electrode member 12 come into contact with each other, the wiring portion 19 and the second electrode member 12 are electrically connected. By sandwiching the substrate 13 between the first electrode member 11 and the second electrode member 12 in this way, the first electrode member 11 and the second electrode member 12 are electrically connected to each other through the capacitor 18 provided on the substrate 13. Are connected in series. There is no short circuit between the contact portion 22 and the contact portion 23.

The substrate 13 has a contact portion 22 and a hole portion 24 penetrating the contact portion 23. Further, as shown in FIG. 2, the first electrode member 11 has a hole portion 25, and the second electrode member 12 has a hole portion 26. The hole portion 24 penetrates the substrate 13 in the plate thickness direction, the hole portion 25 penetrates the first electrode member 11 in the plate thickness direction, and the hole portion 26 penetrates the second electrode member 12 in the plate thickness direction. The holding member 14 is provided through the hole portion 24, the hole portion 25, and the hole portion 26. The holding member 14 has a bolt 27 and a nut 28. By tightening the nut 28 to the bolt 27 penetrating the hole 24, the hole 25, and the hole 26, the holding member 14 integrally holds the stacked first electrode member 11, the substrate 13, and the second electrode member 12. That is, the first electrode member 11 and the second electrode member 12 are connected by the holding member 14 with the substrate 13 sandwiched between them, and the connected state is fixed. In the case of the first embodiment, the bolts 27 and nuts 28 constituting the holding member 14 are both made of resin. Therefore, the first electrode member 11 and the second electrode member 12 are not electrically connected to each other through the holding member 14. The holding member 14 may have bolts 27 or nuts 28 formed of a conductive material. In this case, a washer or collar formed of an insulator is provided between the bolt 27 and the substrate 13 and between the nut 28 and the substrate 13, and between the first electrode member 11 and the second electrode member 12. A short circuit may be prevented.

A comparative example of the first embodiment will be described. As shown in FIG. 6, the first electrode member 11 and the second electrode member 12 can sandwich the substrate 13 in the length direction. That is, the substrate 13 is sandwiched between the first electrode member 11 and the second electrode member 12 in the length direction. In this case, the substrate 13 is connected to the first electrode member 11 by the holding member 14 at one end in the length direction. Further, the substrate 13 is connected to the second electrode member 12 by the holding member 14 at the other end. In such a comparative example, stress in the tensile or torsional direction is applied to the connection portion between the first electrode member 11 and the substrate 13 and the connection portion between the second electrode member 12 and the substrate 13. Further, the substrate 13 itself is likely to be bent or twisted, and as a result, stress in the tensile or twisting direction is applied. As a result, the durability of the connecting portion between the first electrode member 11 and the second electrode member 12 sandwiching the substrate 13 is lower than that of the first embodiment. Further, in the comparative example, the holding member 14 is required at two places, that is, the holding of the first electrode member 11 and the substrate 13 and the holding of the second electrode member 12 and the substrate 13.

In the first embodiment described above, the substrate 13 on which the capacitor 18 is arranged is sandwiched between the first electrode member 11 and the second electrode member 12 in the plate thickness direction. The stacked first electrode member 11, substrate 13, and second electrode member 12 are held by bolts 27 and nuts 28 of the holding member 14. That is, the substrate 13 between the first electrode member 11 and the second electrode member 12 is sandwiched in the plate thickness direction, and these are integrally fixed by the holding member 14. As a result, the stress in the tensile and torsional directions applied to the substrate 13 from the first electrode member 11 and the second electrode member 12 is reduced. Therefore, the concentration of stress starting from the substrate 13 is reduced, and the durability of the connecting portion between the first electrode member 11 and the second electrode member 12 and the substrate 13 can be improved.

Further, in the first embodiment, the first electrode member 11, the substrate 13, and the second electrode member 12 are integrally held by one holding member 14 composed of a pair of bolts 27 and nuts 28. Therefore, when connecting the first electrode member 11 and the second electrode member 12, the first electrode member 11 and the second electrode member 12 including the substrate 13 are connected by a simple procedure of holding one holding member 14. Will be done. Therefore, the man-hours can be reduced and the number of parts can be reduced.

Further, in the first embodiment, the capacitor 18 is arranged on the substrate 13. The total length of the first electrode member 11 and the second electrode member 12 is shortened by sandwiching the substrate 13 between them. Then, by sandwiching the substrate 13 on which the capacitor 18 is arranged between the first electrode member 11 and the second electrode member 12, the first electrode member 11 and the second electrode member 12 are shortened, and the capacitor is shortened. The phase of the high frequency applied to the transmission electrode device 10 is shifted by 18. As a result, the generation of standing waves in the first electrode member 11 and the second electrode member 12 is suppressed. Therefore, the deviation of matching due to the influence of the standing wave can be reduced, and the power transmission efficiency can be improved.

(Second Embodiment)
The power transmission electrode device of the second embodiment is shown in FIG.
The power transmission electrode device 30 of the second embodiment has a first power transmission member 31 and a second power transmission member 32. The first power transmission member 31 and the second power transmission member 32 are arranged in a pair with a space between them. That is, the first power transmission member 31 and the second power transmission member 32 are provided at predetermined intervals without being in contact with each other. The first power transmission member 31 is composed of a first electrode member 11 and a second electrode member 12. Similarly, the second power transmission member 32 is composed of the first electrode member 11 and the second electrode member 12. That is, in the case of the second embodiment, the first power transmission member 31 and the second power transmission member 32, which are composed of the first electrode member 11 and the second electrode member 12, are in a pair facing each other. Such a pair of the first power transmission member 31 and the second power transmission member 32 is applied to the symmetrical CLC circuit 33 as shown in FIG. In this case, a coil 34 serving as a reactance is provided between the first power transmission member 31 and the second power transmission member 32. That is, on the substrate 13, the coil 34 is arranged in addition to the capacitor 18.

In the case of the second embodiment applied to such a CLC circuit 33, the substrate 13 is provided between the first power transmission member 31 and the second power transmission member 32. That is, as shown in FIG. 7, the substrate 13 has a connection portion 35 between the first electrode member 11 of the first power transmission member 31 and the second electrode member 12, and the first electrode member 11 and the second of the second power transmission member 32. It is provided between the connecting portion 36 and the electrode member 12. In this case, the substrate 13 is sandwiched between the first electrode member 11 and the second electrode member 12 of the first power transmission member 31 in the plate thickness direction, and the first electrode member of the second power transmission member 32 in the plate thickness direction. It is sandwiched between the 11 and the second electrode member 12. As a result, the stress in the tensile and torsional directions of the substrate 13 is reduced. Further, by arranging the substrate 13 between the first power transmission member 31 and the second power transmission member 32, the distance between the first power transmission member 31 and the second power transmission member 32 is defined by the board 13. As shown in FIG. 9, the substrate 13 has a capacitor 18 and a coil 34 on an end surface 37 of the first power transmission member 31 and the second power transmission member 32 on the first electrode member 11 side. Further, as shown in FIG. 10, the substrate 13 has a capacitor 18 on the end surface 38 of the second electrode member 12 of the first power transmission member 31 and the second power transmission member 32. As a result, the substrate 13 is provided with the CLC circuit 33 shown in FIG. The substrate 13 shown in FIGS. 9 and 10 is an example. Therefore, the arrangement of the capacitor 18 and the coil 34 can be arbitrarily changed.

In the second embodiment, the substrate 13 includes the first electrode member 11 and the second electrode member 12 constituting the first power transmission member 31, and the first electrode member 11 and the second electrode member 12 constituting the second power transmission member 32. It is provided between and. Therefore, the stress in the tensile and torsional directions applied to the substrate 13 is reduced as in the first embodiment. Therefore, the durability of the connecting portion 35, the connecting portion 36, and the substrate 13 between the first electrode member 11 and the second electrode member 12 to be connected can be improved. In addition to this, the distance between the first power transmission member 31 and the second power transmission member 32 can be fixedly defined by the substrate 13.

Further, in the second embodiment, the substrate 13 is provided between the pair of the first power transmission member 31 and the second power transmission member 32. In this way, even when the substrate 13 is provided between the pair of the first power transmission member 31 and the second power transmission member 32, the stress applied to the substrate 13 can be reduced, and the first power transmission member 31 and the second power transmission member 31 and the second power transmission member can be reduced. The durability of each of the connecting portions 35, 36 including the member 32 and the substrate 13 can be improved.
Further, in the second embodiment, the holding member 14 may be two, a connecting portion 35 of the first power transmission member 31 and a connecting portion 36 of the second power transmission member 32. Therefore, the man-hours for holding and the number of parts can be reduced.

(Wireless power supply system)
Next, a wireless power feeding system to which the power transmission electrode device according to the above-described embodiment is applied will be described. FIG. 11 shows the transport device 40.
The transport device 40 includes a mobile body 41 and a wireless power supply system 42. The wireless power supply system 42 includes a power transmission electrode device 30 and a power reception electrode member 43. The power transmission electrode device 30 has a pair of the first power transmission member 31 and the second power transmission member 32 as described in the second embodiment. The power transmission electrode device 30 of the wireless power supply system 42 is fixed to equipment (not shown) such as a factory or a warehouse. The moving body 41 moves along a traveling path 44 fixed to equipment (not shown). The mobile body 41 has a control unit 45, a rechargeable battery 46, and a drive unit 47. The control unit 45 rectifies the electric power received from the power transmission electrode device 30 by the power receiving electrode member 43 and stores it in the rechargeable battery 46. At the same time, the control unit 45 supplies the electric power stored in the rechargeable battery 46 to the drive unit 47. The drive unit 47 has wheels 48 and generates a driving force for driving the moving body 41. The drive unit 47 moves the moving body 41 along the traveling path 44 by driving the wheels 48. The moving body 41 has a loading platform 49 on which luggage or the like is mounted on an end surface opposite to the power transmission electrode device 30.

The power transmission electrode device 30 is provided in a pair of parallel rails. The power transmission electrode device 30 is not limited to a linear shape, but may be a curved shape or a bent shape depending on the structure of the equipment. The first power transmission member 31 constituting the power transmission electrode device 30 has a first surface 51 and a second surface 52. Similarly, the second power transmission member 32 has a first surface 51 and a second surface 52. The first surface 51 is a surface of the first power transmission member 31 and the second power transmission member 32 on the side closer to the moving body 41. The second surface 52 is located on the opposite side of the first surface 51 in the plate thickness direction. In the case of the third embodiment shown in FIG. 11, the first power transmission member 31 and the second power transmission member 32 have an L-shaped cross section. As a matter of course, the first power transmission member 31 and the second power transmission member 32 may have a simple plate shape without being bent.

The power receiving electrode member 43 is provided on the moving body 41. A pair of power receiving electrode members 43 are provided on the moving body 41 corresponding to a pair of the first power transmission member 31 and the second power transmission member 32. As shown in FIG. 12, one of the pair of power receiving electrode members 43 sandwiches the first power transmission member 31 of the power transmission electrode device 30. Specifically, the power receiving electrode member 43 has a first plate portion 61, a second plate portion 62, and a connection plate portion 63. In the case of the present embodiment, the first plate portion 61, the second plate portion 62, and the connecting plate portion 63 constituting the power receiving electrode member 43 are integrally formed from the plate members of one conductor. The first plate portion 61 faces the first surface 51 of the first power transmission member 31. Further, the second plate portion 62 faces the second surface 52 of the first power transmission member 31. In this way, the power receiving electrode member 43 sandwiches the first power transmission member 31 of the power transmission electrode device 30 between the first plate portion 61 and the second plate portion 62. The first plate portion 61 and the second plate portion 62 may be formed as separate bodies, and may be electrically connected to each other by a conducting wire or the like instead of the connecting plate portion 63. Further, although the other of the pair of power receiving electrode members 43 sandwiches the second power transmission member 32, a detailed description thereof will be omitted because the structure is substantially the same as that of the first power transmission member 31.

Due to the configuration of the first power transmission member 31, the second power transmission member 32, and the power reception electrode member 43 of the power transmission electrode device 30, the second power transmission member 32 and the power reception electrode member 43 are between the first power transmission member 31 and the power reception electrode member 43. The space between the electrode member 43 and the electrode member 43 is filled with air as a dielectric. As a result, an electrostatic capacity is secured between the first power transmission member 31 and the power receiving electrode member 43, and between the second power transmission member 32 and the power receiving electrode member 43. Therefore, electric power is wirelessly supplied from the power transmission electrode device 30 to the power reception electrode member 43 by utilizing electric field coupling.

In the case of the above embodiment of the wireless power supply system 42, one of the power receiving electrode members 43 provided on the mobile body 41 sandwiches the first power transmission member 31 of the power transmission electrode device 30. That is, one of the power receiving electrode members 43 faces both the first surface 51 and the second surface 52 of the first power transmission member 31. Further, the other side of the power receiving electrode member 43 sandwiches the second power transmission member 32. That is, the other side of the power receiving electrode member 43 faces both the first surface 51 and the second surface 52 of the second power transmission member 32. By sandwiching the first power transmission member 31 between the power receiving electrode members 43 in this way, even if the distance between the first power transmission member 31 and the power receiving electrode member 43 changes, the first power transmission member 31 and the power receiving electrode member 43 The change in capacitance between and is reduced. Further, by sandwiching the first power transmission member 31 between the power receiving electrode members 43, the area where the first power transmission member 31 and the power receiving electrode member 43 face each other is doubled as compared with the case where they simply face each other. Therefore, the transmission efficiency of wireless power supply using electric field coupling is improved. That is, if the area of the first power transmission member 31 and the power receiving electrode member 43 is maintained, the capacitance is doubled, and if the capacitance is constant, the area of the first power transmission member 31 and the power receiving electrode member 43 is halved. .. The same effect as described above can be obtained between the second power transmission member 32 and the power receiving electrode member 43. As a result, not only the change in capacitance is reduced, but also the facing area between the power transmission electrode device 30 and the power reception electrode member 43 is secured without increasing the size. Therefore, the change in capacitance can be reduced, and the power transmission efficiency can be improved.

Further, in the embodiment of the wireless power feeding system 42, a configuration in which the first power transmission member 31 is sandwiched between the power receiving electrode members 43 and a configuration in which the second power transmission member 32 is sandwiched between the power receiving electrode members 43 are applied. As a result, the change in the distance between the first surface 51 of the first power transmission member 31 or the second power transmission member 32 and the power receiving electrode member 43 becomes the second surface 52 of the first power transmission member 31 or the second power transmission member 32. It is offset by the change in the distance from the power receiving electrode member 43. For example, when the distance between the first surface 51 and the power receiving electrode member 43 increases, the distance between the second surface 52 and the power receiving electrode member 43 decreases correspondingly. Therefore, the capacitance between the power receiving electrode member 43 and the first power transmission member 31 or the second power transmission member 32 is maintained substantially constant regardless of the change in distance. As a result, the influence of the change in the distance between the power receiving electrode member 43 and the first power transmission member 31 and the change in the distance between the power receiving electrode member 43 and the second power transmission member 32 on the power transmission efficiency is reduced. From these facts, the substrate 13 is between the first electrode member 11 and the second electrode member 12 of the first power transmission member 31 and between the first electrode member 11 and the second electrode member 12 of the second power transmission member 32. When sandwiching the substrate 13, even if a step is generated by sandwiching the substrate 13, the influence of the change in distance due to the step is reduced. That is, by adopting a configuration in which the first power transmission member 31 is sandwiched between the power receiving electrode members 43, the influence of the step caused by the substrate 13 is reduced. Similarly, by adopting a configuration in which the second power transmission member 32 is sandwiched between the power receiving electrode members 43, the influence of the step caused by the substrate 13 is reduced. As a result, when the power transmission electrode device 30 of the first embodiment or the second embodiment is applied to the wireless power feeding system 42, the influence of sandwiching the substrate 13 between the first electrode member 11 and the second electrode member 12 Is reduced. Therefore, the improvement of the transmission efficiency by ensuring the matching and the improvement of the durability at the connecting portion between the first electrode member 11 and the second electrode member 12 are compatible, and the power receiving electrode member 43 and the first power transmission member 31 or the first (Ii) It is also possible to improve the power transmission efficiency by reducing the influence of the change in the distance to the power transmission member 32.

The present invention described above is not limited to the above-described embodiment, and can be applied to various embodiments without departing from the gist thereof.
Although the present disclosure has been described in accordance with the examples, it is understood that the present disclosure is not limited to the examples and structures. The present disclosure also includes various modifications and modifications within an equal range. In addition, various combinations and forms, as well as other combinations and forms that include only one element, more, or less, are also within the scope of the present disclosure.

In the drawings, 10 and 30 are power transmission electrode devices, 11 is a first electrode member, 12 is a second electrode member, 13 is a substrate, 14 is a holding member, 17 is a wiring part (first wiring part), 18 is a capacitor, and 19 Is a wiring unit (second wiring unit), 31 is a first power transmission member, 32 is a second power transmission member, 42 is a wireless power supply system, and 43 is a power receiving electrode member.

Claims (4)

A power transmission electrode device used on the power transmission side in wireless power supply that wirelessly transmits electric power using electric field coupling.
The first electrode member (11) formed of a conductor and
A second electrode member (12) formed of a conductor connected to the first electrode member (11),
In the plate thickness direction, the first electrode member (11) and the second electrode member (12) are overlapped and sandwiched between the first electrode member (11) and the second electrode member (12). A plate-shaped substrate (13) on which a capacitor (18) for connecting between them is arranged, and
A holding member (14) that holds the first electrode member (11) and the second electrode member (12) with the substrate (13) interposed therebetween.
A power transmission electrode device equipped with. The substrate (13) is
The first wiring portion (17) provided on the surface side in contact with the first electrode member (11) and
The second wiring portion (19) provided on the surface side opposite to the surface in contact with the second electrode member (12),
The power transmission electrode device according to claim 1. A first power transmission member (31) composed of the first electrode member (11) and the second electrode member (12),
A second power transmission member (32) arranged in parallel with the first power transmission member (31) and composed of the first electrode member (11) and the second electrode member (12). Prepare,
One substrate (13) includes a connection portion (35) between the first electrode member (11) and the second electrode member (12) in the first power transmission member (31), and the second power transmission member. The power transmission electrode device according to claim 1, which is provided between the connection portion (36) between the first electrode member (11) and the second electrode member (12) in (32). The power transmission electrode device (10, 30) according to any one of claims 1 to 3.
The first electrode member (11) and the second electrode member (12) facing both one surface side and the other surface side of the first electrode member (11) and the second electrode member (12). By sandwiching the power receiving electrode member (43), which receives electric power wirelessly from the first electrode member (11) and the second electrode member (12) by electric field coupling.
Wireless power supply system with.

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