JP2019068581A - Transmission electrode device and wireless power feeding system using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the generation of a standing wave by dividing an electrode, suppress a decrease in power transmission efficiency, and have a highly durable power transmission electrode device between connected electrodes, and a wireless power feeding system using the same. I will provide a. A power transmission electrode device 10 is used on the power transmission side in a wireless power supply that wirelessly transmits electric power by utilizing electric field coupling. The power transmission electrode device 10 includes a first electrode member 11, a second electrode member 12, a substrate 13, and a holding member 14. The first electrode member 11 is formed of a conductor. The second electrode member 12 is connected to the first electrode member 11 and is formed of a conductor. The substrate 13 is overlapped and sandwiched between the first electrode member 11 and the second electrode member 12 in the plate thickness direction, and a capacitor 18 connecting between the first electrode member 11 and the second electrode member 12 is arranged. Has been done. The holding member 14 holds the first electrode member 11 and the second electrode member 12 with the substrate 13 interposed therebetween. [Selection diagram] Fig. 1

Description

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

  In the case of wirelessly supplying power using electric field resonance, it is necessary to extend the entire length of the transmission electrode device to transfer power in a longer range. However, when the total length of the power transmission electrode device is increased, standing waves are easily generated in the power transmission electrode device (see cited reference 1). When a standing wave is generated in the power transmission electrode device, a deviation occurs in the alignment with the power reception electrode device depending on the position of the power transmission electrode device. As a result, there is a problem in that the power transfer efficiency is reduced.

JP 2014-227025 A

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

  In the first aspect of the present invention, the substrate on which the capacitor is disposed is overlapped and sandwiched between the first electrode member and the second electrode member in the thickness direction. The stacked first electrode member, the substrate, and the second electrode member are held by the holding member. That is, while the board | substrate of a 1st electrode member and a 2nd electrode member is inserted | pinched by the plate | board thickness direction, these are integrally hold | maintained by the holding member. Thereby, the stress in the tension or twist direction applied to the substrate from the first electrode member and the second electrode member is reduced. Therefore, concentration of stress originating from the substrate can be reduced, and durability between the connecting first electrode member and the second electrode member can be enhanced.

  In the first aspect of the invention, the substrate is provided with a capacitor. By sandwiching the substrate on which the capacitor is disposed 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, Generation of standing waves can be suppressed. Therefore, misalignment due to the influence of standing waves can be reduced, and power transmission efficiency can be improved.

  In the invention according to claim 4, the power receiving electrode member faces both the 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 member is opposed in a state in which the first electrode member and the second electrode member are sandwiched in the thickness direction. Thus, even if a change in distance occurs between the power transmission electrode device and the power reception electrode member by sandwiching the power transmission electrode device with the power reception electrode member, the capacitance of the power transmission electrode device and the power reception electrode member Change is reduced. For example, when the distance between one end face of the power transmission electrode device and the power reception electrode member approaches due to a change in the distance between the power transmission electrode device and the power reception electrode member, the power reception electrode member sandwiching the power transmission electrode device The distance between the other end face side of the power transmission electrode device is increased. Therefore, even if the distance between the power transmission electrode device and the power reception electrode member changes, the change in the overall capacitance between the power transmission electrode device and the power reception electrode member becomes gentle. As a result, even if 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 the step is reduced by sandwiching the power transmission electrode device with the power reception electrode member. Be done. Further, by sandwiching the power transmission electrode device with the power reception electrode member, the area in which the power transmission electrode device and the power reception 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, while being able to reduce the shift | offset | difference of the matching accompanying the influence of a standing wave, the influence of the change of capacity | capacitance can also be reduced and the transmission efficiency of electric power can be improved.

Schematic which shows the principal part of the power transmission electrode apparatus by 1st Embodiment Arrow view seen from the direction of arrow II in FIG. 1 Schematic which shows the power transmission electrode apparatus by 1st Embodiment Schematic which shows the surface at the side of the 1st electrode member of a board | substrate in the power transmission electrode apparatus by 1st Embodiment Schematic which shows the surface at the side of the 2nd electrode member of a board | substrate in the power transmission electrode apparatus by 1st Embodiment Schematic which shows the principal part of the power transmission electrode apparatus by a comparative example Schematic which shows the principal part of the power transmission electrode apparatus by 2nd Embodiment Schematic which shows the CLC circuit applied to the power transmission electrode apparatus by 2nd Embodiment Schematic which shows the surface at the side of the 1st electrode member of a board | substrate in the power transmission electrode apparatus by 2nd Embodiment Schematic which shows the surface at the side of the 2nd electrode member of a board | substrate in the power transmission electrode apparatus by 2nd Embodiment Schematic perspective view which shows the conveying apparatus which applied the wireless power supply system provided with the power transmission electrode apparatus by 2nd Embodiment Schematic which shows the structure of a power transmission electrode apparatus and a receiving electrode member in a wireless power supply system provided with the power transmission electrode apparatus by 2nd Embodiment

Hereinafter, a plurality of embodiments of a power transmission electrode device will be described based on the drawings. In addition, the same code | symbol is attached | subjected to a substantially the same structure site | part in several embodiment, and description is abbreviate | 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. Each of the first electrode member 11 and the second electrode member 12 is 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, but 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 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 by an insulator such as a resin. The substrate 13 has an end face 15 of the first electrode member 11 and an end face 16 on the second electrode member 12 side. The substrate 13 has a wiring portion 17 and a capacitor 18 on one end face 15 in the thickness direction as shown in FIG. Further, the substrate 13 has a wiring portion 19 on the other end face 16 as shown in FIG. The wiring portion 17 and the wiring portion 19 are formed in a film shape using a conductive material. Wiring portion 17 and wiring portion 19 are electrically connected by 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 contacts the first electrode member 11. When the contact portion 22 and the first electrode member 11 are in contact with each other, the wiring portion 17 and the first electrode member 11 are electrically connected. The wiring portion 19 also 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 contacts the second electrode member 12. When the contact portion 23 and the second electrode member 12 are in contact with each other, the wiring portion 19 and the second electrode member 12 are electrically connected. By thus sandwiching the substrate 13 between the first electrode member 11 and the second electrode member 12, the first electrode member 11 and the second electrode member 12 can conduct electricity through the capacitor 18 provided on the substrate 13. Are connected in series. The contact 22 and the contact 23 are not short-circuited.

  The substrate 13 has a contact portion 22 and a hole 24 penetrating the contact portion 23. Further, as shown in FIG. 2, the first electrode member 11 has a hole 25, and the second electrode member 12 has a hole 26. The hole 24 penetrates the substrate 13 in the plate thickness direction, the hole 25 penetrates the first electrode member 11 in the plate thickness direction, and the hole 26 penetrates the second electrode member 12 in the plate thickness direction. The holding member 14 is provided through the holes 24, the holes 25 and the holes 26. The holding member 14 has a bolt 27 and a nut 28. The holding member 14 holds the overlapped first electrode member 11, the substrate 13 and the second electrode member 12 together by tightening the nut 28 on the bolt 27 penetrating the hole 24, the hole 25 and the hole 26. That is, the first electrode member 11 and the second electrode member 12 are connected by the holding member 14 in a state in which the substrate 13 is sandwiched therebetween, and the connection state is fixed. In the case of the first embodiment, the bolt 27 and the nut 28 that constitute the holding member 14 are both formed of resin. Therefore, the first electrode member 11 and the second electrode member 12 do not have an electrical connection through the holding member 14. In addition, the holding member 14 may form the volt | bolt 27 or the nut 28 with an electroconductive material. In this case, a washer or a collar or the like formed of an insulator is provided between the bolt 27 and the substrate 13 and between the nut 28 and the substrate 13, and the space between the first electrode member 11 and the second electrode member 12 is provided. 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 also 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 longitudinal 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 longitudinal direction. Also, 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, a tensile or torsional stress 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. In addition, the substrate 13 itself is likely to be bent or twisted, and as a result, stress in the tension or twist direction is applied. As a result, the durability of the connection portion between the first electrode member 11 and the second electrode member 12 across 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 of holding the first electrode member 11 and the substrate 13 and holding the second electrode member 12 and the substrate 13.

  In the first embodiment described above, the substrate 13 on which the capacitor 18 is disposed is overlapped and sandwiched between the first electrode member 11 and the second electrode member 12 in the thickness direction. The stacked first electrode member 11, the substrate 13 and the second electrode member 12 are held by the bolt 27 and the nut 28 of the holding member 14. That is, the substrate 13 of 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. Thereby, the stress in the tension or twist direction applied to the substrate 13 from the first electrode member 11 and the second electrode member 12 is reduced. Therefore, concentration of stress originating from the substrate 13 can be reduced, and durability of the connection portion between the first electrode member 11 and the second electrode member 12 and the substrate 13 can be enhanced.

  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 configured by a pair of bolts 27 and nuts 28. Therefore, when the first electrode member 11 and the second electrode member 12 are connected, 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 Be done. Therefore, while being able to aim at the reduction of a man-hour, the reduction of a number of parts can also be aimed at.

  Furthermore, in the first embodiment, the substrate 13 is provided with the capacitor 18. The entire length of the first electrode member 11 and the second electrode member 12 is reduced by sandwiching the substrate 13 therebetween. Then, by sandwiching the substrate 13 on which the capacitor 18 is disposed 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 The phase of the high frequency applied to the transmitting electrode device 10 is shifted by 18. Thereby, generation | occurrence | production of the standing wave in the 1st electrode member 11 and the 2nd electrode member 12 is suppressed. Therefore, misalignment due to the influence of standing waves can be reduced, and power transmission efficiency can be improved.

Second Embodiment
The power transmission electrode apparatus of 2nd 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 form a pair and are spaced apart. 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 configured of a first electrode member 11 and a second electrode member 12. Similarly, the second power transmission member 32 is configured by 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 configured by the first electrode member 11 and the second electrode member 12 form a pair facing each other. Such a pair of first power transmission members 31 and second power transmission members 32 are applied to a 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, in the substrate 13, the coil 34 is disposed 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 and the second electrode member 12 of the first power transmission member 31, and the first electrode member 11 and the second electrode of the second power transmission member 32. It is provided between the electrode member 12 and the connection portion 36. 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. 11 and the second electrode member 12. Thereby, the stress in the tension or twist direction 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 substrate 13. The board | substrate 13 has the capacitor | condenser 18 and the coil 34 in the end surface 37 by the side of the 1st electrode member 11 of the 1st power transmission member 31 and the 2nd power transmission member 32, as shown in FIG. Further, as shown in FIG. 10, the substrate 13 has a capacitor 18 on the end face 38 of the first electrode member 12 of the first power transmission member 31 and the second power transmission member 32. Thus, the substrate 13 is provided with the CLC circuit 33 shown in FIG. The substrate 13 shown in FIG. 9 and FIG. 10 is an example. Therefore, the arrangement of capacitor 18 and 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. And between. Therefore, the stress in the tension or twist direction applied to the substrate 13 is reduced as in the first embodiment. Therefore, the durability of the connection portion 35 and the connection portion 36 between the first electrode member 11 and the second electrode member 12 to be connected and the substrate 13 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 defined constant by the substrate 13.

In the second embodiment, the substrate 13 is provided between the pair of first power transmission members 31 and the second power transmission member 32. Thus, even when the substrate 13 is provided between the pair of first power transmission members 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 The durability of each connection 35, 36 including the member 32 and the substrate 13 can be enhanced.
Furthermore, in the second embodiment, two holding members 14 may be the connection portion 35 of the first power transmission member 31 and the connection portion 36 of the second power transmission member 32. Therefore, the number of 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 transfer device 40.
The carrier device 40 includes a mobile unit 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 includes the pair of first power transmission members 31 and the second power transmission member 32 as described in the second embodiment. The power transmission electrode device 30 of the wireless power feeding system 42 is fixed to equipment (not shown) such as a factory or a warehouse, for example. The moving body 41 moves along a traveling path 44 fixed to a facility (not shown). The mobile unit 41 has a control unit 45, a rechargeable battery 46 and a drive unit 47. The control unit 45 rectifies the power received from the power transmission electrode device 30 by the power reception electrode member 43 and stores the rectified power in the rechargeable battery 46. At the same time, the control unit 45 supplies the 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 driving 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 for loading a load or the like on the 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, and may have a curved shape or a bent shape according to 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 which is closer to the movable body 41. The second surface 52 is located opposite to the first surface 51 in the 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 are formed in 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 bending.

  The power receiving electrode member 43 is provided on the movable body 41. A pair of power receiving electrode members 43 is provided on the movable body 41 corresponding to the pair of first power transmission members 31 and the second power transmission members 32. One of the pair of power reception electrode members 43 sandwiches the first power transmission member 31 of the power transmission electrode device 30 as shown in FIG. 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 connection plate portion 63 that constitute the power receiving electrode member 43 are integrally formed of a plate member of one conductor. The first plate portion 61 faces the first surface 51 of the first power transmission member 31. In addition, the second plate portion 62 faces the second surface 52 of the first power transmission member 31. Thus, the power reception 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 separately, and instead of the connection plate portion 63, they may be electrically connected by a conductive wire or the like. Further, the other of the pair of power reception electrode members 43 sandwiches the second power transmission member 32. However, since a substantial configuration is common to the first power transmission member 31, detailed description will be omitted.

  With the configuration of the first power transmission member 31 and the second power transmission member 32 and the power reception electrode member 43 of such a power transmission electrode device 30, the second power transmission member 32 and the power reception are provided between the first power transmission member 31 and the power reception electrode member 43. The space between the electrode members 43 is filled with air which is a dielectric. Thereby, electrostatic capacitance is secured between the first power transmission member 31 and the power reception electrode member 43 and between the second power transmission member 32 and the power reception electrode member 43. Therefore, electric power is wirelessly supplied from the power transmission electrode device 30 to the power reception electrode member 43 using electric field coupling.

  In the case of the embodiment of the wireless power feeding system 42 as described above, one of the power receiving electrode members 43 provided on the moving body 41 sandwiches the first power transmitting member 31 of the power transmitting 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 of the power receiving electrode member 43 sandwiches the second power transmission member 32. That is, the other 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 thus sandwiching the first power transmission member 31 by the power reception electrode member 43, even if a change in distance occurs between the first power transmission member 31 and the power reception electrode member 43, the first power transmission member 31 and the power reception electrode member 43 The change in capacitance between and is reduced. In addition, by sandwiching the first power transmission member 31 with the power reception electrode member 43, the area in which the first power transmission member 31 and the power reception electrode member 43 face each other is doubled as compared with the case where they simply face each other. Therefore, the transmission efficiency of power supply by wireless using electric field coupling is improved. That is, when the areas of the first power transmission member 31 and the power reception electrode member 43 are maintained, the capacitance is doubled, and when the capacitance is constant, the areas of the first power transmission member 31 and the power reception electrode member 43 become half. . 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 of these, 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 upsizing. Therefore, the change in capacitance can be reduced, and the power transfer efficiency can be improved.

  Further, in the embodiment of the wireless power feeding system 42, the configuration in which the first power transmission member 31 is sandwiched by the power reception electrode member 43 and the configuration in which the second power transmission member 32 is sandwiched by the power reception electrode member 43 are applied. Thereby, the change of 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 is different from that of the first power transmission member 31 or the second surface 52 of the second power transmission member 32. It is offset by a change in distance between the receiving electrode member 43 and the 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 correspondingly decreases. 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 change in the distance between the power reception electrode member 43 and the first power transmission member 31 and the change in the distance between the power reception electrode member 43 and the second power transmission member 32 have less influence on the power transmission efficiency. From these, 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, the substrate 13 In the case of sandwiching, even if a level difference is caused by the sandwiching of the substrate 13, the influence of the change in distance due to the level difference is reduced. That is, by adopting a configuration in which the first power transmission member 31 is sandwiched by the power reception electrode member 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 by the power reception electrode members 43, the influence of the step caused by the substrate 13 is reduced. As a result of these, 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 securing the alignment and the improvement of the durability of the connection portion between the first electrode member 11 and the second electrode member 12 are simultaneously achieved, and the power receiving electrode member 43 and the first power transmission member 31 or the first It is also possible to achieve the improvement of the power transfer efficiency by reducing the influence of the change in the distance to the two power transmission members 32.

The present invention described above is not limited to the above embodiment, and can be applied to various embodiments without departing from the scope of the invention.
Although the present disclosure has been described based on 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 variations within the equivalent range. In addition, various combinations and forms, and further, other combinations and forms including only one element, or more or less than these elements are also within the scope and 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 portion (first wiring portion), 18 is a capacitor, 19 Denotes a wiring portion (second wiring portion), 31 denotes a first power transmission member, 32 denotes a second power transmission member, 42 denotes a wireless power feeding system, and 43 denotes a power receiving electrode member.

Claims (4)

A power transmission electrode device used on a power transmission side in wireless power feeding in which power is transmitted wirelessly using electric field coupling,
A first electrode member (11) formed of a conductor;
A second electrode member (12) formed of a conductor connected to the first electrode member (11);
In the thickness direction, the first electrode member (11) and the second electrode member (12) are overlapped and sandwiched, and the first electrode member (11) and the second electrode member (12) A plate-like substrate (13) on which a capacitor (18) for connecting
A holding member (14) for holding the first electrode member (11) and the second electrode member (12) across the substrate (13);
Power transmission electrode device provided with The substrate (13) is
A first wiring portion (17) provided on the surface side in contact with the first electrode member (11);
A second wiring portion (19) provided on the side opposite to the side in contact with the second electrode member (12);
The power transmission electrode device according to claim 1, comprising: A first power transmission member (31) configured of the first electrode member (11) and the second electrode member (12);
And a second power transmission member (32) disposed in parallel with the first power transmission member (31) and configured by the first electrode member (11) and the second electrode member (12). Equipped
The one substrate (13) is a connection portion (35) of 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) of 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) face both the one surface side and the other surface side of the first electrode member (11) and the second electrode member (12). A power receiving electrode member (43) that receives power wirelessly from the first electrode member (11) and the second electrode member (12) by electric field coupling;
Wireless power supply system comprising:

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