Power reception device

Abstract

To provide a power reception device which can suppress damage caused by deformation of a mobile body.SOLUTION: Power reception devices 3, 3a, 3b, 3c which are supplied with power in a non-contact manner from a power transmission device 2 and mounted on a mobile body 10 include power reception antenna parts 35, 35h. The power reception antenna parts are arranged at deformation points which are portions to be deformed in the mobile body, are flexible and at least partially deformable according to the deformation.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to a power receiving device. [Background technology]

[0002] Various techniques have been proposed for contactlessly feeding power from a power feeding device provided on a road surface to a power receiving device provided on a moving body. In such a power receiving device, a power receiving unit (power receiving antenna unit) that receives power is arranged on the underside of the moving body, and therefore may come into contact with the road surface. For this reason, for example, Patent Document 1 discloses a technique for suppressing interference between the road surface and the power receiving antenna unit by making the rear end of the power receiving antenna unit into a curved shape. In addition, an automatic guided vehicle (AGV) is known as a moving body that operates by contactless power feeding. In an AGV, in order to continue running stably when going up and down steps or climbing up an obstacle, there is a configuration in which the AGV is divided into two in the front-rear direction and has a connecting part that connects them. Such an AGV can be deformed (bended) in the up-down direction around the connecting part. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-128124 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned AGV, if the power receiving antenna is arranged at the joint, the power receiving antenna may be damaged due to deformation of the AGV. This problem is not limited to the above-mentioned AGV, but is common to any moving body having a joint. In addition, even in any type of moving body that does not have a joint, if the power receiving antenna is arranged at a location that is easily deformed when going up and down a step or climbing over an obstacle, it may be damaged. For this reason, there is a demand for technology that can suppress damage to the power receiving antenna due to deformation of the moving body. [Means for solving the problem]

[0005] The present disclosure can be realized in the following forms.

[0006] As one embodiment of the present disclosure, there is provided a power receiving device (3, 3a, 3b, 3c) that is supplied with power contactlessly from a power transmitting device (2) and is mounted on a moving body (10). The power receiving device includes a power receiving antenna unit (35, 35h), and the power receiving antenna unit is disposed at a deformation location that is a part of the moving body that deforms, has flexibility, and is at least partially deformable in response to the deformation.

[0007] According to this embodiment of the power receiving device, the power receiving antenna unit is disposed at a deformed portion of the moving body, has flexibility, and can be at least partially deformed in response to the deformation of the moving body, so that damage to the power receiving antenna unit due to deformation of the moving body can be suppressed compared to a configuration in which the power receiving antenna unit is not flexible. Also, since the power receiving antenna unit can be disposed at the deformed portion, restrictions on the mounting position of the power receiving antenna unit can be suppressed.

[0008] As another embodiment of the present disclosure, there is provided a power receiving device (3d, 3e, 3f, 3g) that is supplied with power contactlessly from a power transmitting device (2) and is mounted on a moving body (10). This power receiving device is composed of a plurality of first parts (65) and includes a power receiving antenna unit (35d), and each of the plurality of first parts is disposed to avoid a deformation point that is a portion of the moving body that deforms.

[0009] According to this form of power receiving device, the power receiving antenna unit is composed of a plurality of first parts, and each of the plurality of first parts is positioned to avoid deformed parts of the moving body. Therefore, damage to the power receiving antenna unit due to deformation of the moving body can be suppressed compared to a configuration in which the power receiving antenna unit is positioned at the deformed part. [Brief description of the drawings]

[0010] [Figure 1]1 is a block diagram showing a schematic configuration of a contactless power supply system according to a first embodiment of the present disclosure. [Diagram 2] FIG. 2 is a perspective view of the AGV according to the first embodiment, as viewed from below. [Diagram 3] 4 is an explanatory diagram illustrating a schematic diagram of a power receiving antenna section when the AGV in the first embodiment descends a step. FIG. [Figure 4] 13 is an explanatory diagram illustrating a power receiving device when an AGV in a second embodiment descends a step. FIG. [Diagram 5] 13 is a schematic explanatory diagram of the power receiving device when the AGV in the third embodiment descends a step. FIG. [Figure 6] 13 is a schematic explanatory diagram of the power receiving device when the AGV in the fourth embodiment descends a step. FIG. [Figure 7] 13 is an explanatory diagram illustrating a schematic diagram of a power receiving antenna section when an AGV in a fifth embodiment descends a step. FIG. [Figure 8] 13 is a schematic explanatory diagram of the power receiving device when the AGV in the sixth embodiment descends a step. FIG. [Figure 9] 13 is a schematic explanatory diagram of the power receiving device when the AGV in the seventh embodiment descends a step. FIG. [Figure 10] 13 is a schematic explanatory diagram of the power receiving device when the AGV in the eighth embodiment descends a step. FIG. [Figure 11] 13 is an explanatory diagram of a power receiving antenna section according to another embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] A. First embodiment: A1. Configuration of the wireless power supply system: 1, the contactless power supply system 1 includes a power transmission device 2 provided on a road 4 and a power receiving device 3 provided on the side of an AGV (Automatic Guided Vehicle, AGV) 10. The contactless power supply system 1 is a system that can wirelessly supply power from the power transmission device 2 to the AGV 10 while the AGV 10 is traveling or stopped.

[0012] As shown in FIG. 2, the AGV 10 in this embodiment includes a front portion 52, a rear portion 53, a connecting portion 51, a platform 50, a pair of drive wheels 43, and a pair of steering wheels 40.

[0013] The AGV 10 is divided into two parts in the front-rear direction of the vehicle. The front part of the two parts is the front part 52, and the rear part is the rear part 53. The connecting part 51 connects the front part 52 and the rear part 53, and functions as a joint in the AGV 10. More specifically, when the AGV 10 ascends or descends a step or runs up an obstacle, the AGV 10 can deform in the vertical direction around the connecting part 51. More specifically, the AGV 10 can bend so as to be convex upward around the connecting part 51. This allows the AGV 10 to continue running stably even when ascending or descending a step or running up an obstacle. In this embodiment, a part of the underside of the AGV 10 that deforms (bends) when the AGV 10 ascends or descends a step or runs up an obstacle is called a "deformed part". The deformed part may occur not only when the AGV 10 moves, but also when the floor surface supporting the AGV 10 in a stopped state changes.

[0014] Any type of cargo may be loaded onto the loading platform 50. A pair of drive wheels 43 are provided near the center in the front-rear direction of the AGV 10 and at the ends in the left-right direction, and drive the AGV 10 forward or backward by a driving force transmitted from a motor generator 41 (described later). A pair of steering wheels 40 are provided near the center in the left-right direction of the AGV 10 and at the ends in the front-rear direction, and change the traveling direction of the AGV 10.

[0015] As shown in FIG. 1, the power transmission device 2 on the road 4 side includes a plurality of power transmission coils 21, a plurality of power transmission circuits 24 that supply power by applying an AC voltage to each of the plurality of power transmission coils 21, an external power source 25 that supplies power to the plurality of power transmission circuits 24, and a power transmission control unit 26.

[0016] The multiple power transmitting coils 21 are installed so as to be lined up along the traveling direction of the road 4. The power transmitting coils 21 are divided into multiple sectors.

[0017] The power transmitting circuit 24 converts a DC voltage supplied from an external power source 25 into a high-frequency AC voltage and applies it to the power transmitting coil 21. The power transmitting circuit 24 includes, for example, an inverter circuit, a filter circuit, and a resonant circuit. Note that the inverter circuit, the filter circuit, and the resonant circuit are well known, and therefore a description thereof will be omitted.

[0018] The external power source 25 supplies a DC voltage to the power transmission circuit 24. For example, the external power source 25 supplies the power to the power transmission circuit 24 from a system power supply via a power factor correction circuit (PFC). Note that the PFC is not shown. The DC voltage output by the external power source 25 does not need to be a perfect DC voltage, and may include a certain degree of fluctuation (ripple). The power transmission control unit 26 causes the power transmission circuit 24 and the power transmission coil 21 to transmit power.

[0019] The power receiving device 3 includes a main battery 31, an auxiliary battery 32, a power supply control unit 33, a power receiving circuit 34, a power receiving antenna unit 35, a DC / DC converter circuit 36, an inverter circuit 37, a motor generator 41, an auxiliary unit 42, and a power meter 44.

[0020] The power receiving antenna unit 35 receives power. The power receiving antenna unit 35 includes a power receiving coil and a case for housing the power receiving coil. In this embodiment, the power receiving antenna unit 35 is provided below the connecting portion 51 of the AGV 10, i.e., at the deformed portion. The power receiving coil receives power supplied from the power transmitting coil 21. The power receiving coil is made of, for example, a flexible conductor. The case is made of, for example, a flexible resin member or metal member. Therefore, the power receiving antenna unit 35 in this embodiment is flexible as a whole.

[0021] The power receiving coil is connected to a power receiving circuit 34, and the output of the power receiving circuit 34 is connected to the main battery 31, the high-voltage side of a DC / DC converter circuit 36, and an inverter circuit 37. The low-voltage side of the DC / DC converter circuit 36 ​​is connected to the auxiliary battery 32 and an auxiliary 42. The inverter circuit 37 is connected to a motor generator 41.

[0022] The power receiving circuit 34 includes a rectifier circuit that converts the AC voltage output from the power receiving coil into a DC voltage. The power receiving circuit 34 may also include a DC / DC converter circuit that converts the DC voltage generated by the rectifier circuit into a voltage suitable for charging the main battery 31. The DC voltage output from the power receiving circuit 34 can be used to charge the main battery 31 and drive the motor generator 41 via the inverter circuit 37. In addition, by stepping down the voltage using the DC / DC converter circuit 36, it can also be used to charge the auxiliary battery 32 and drive the auxiliary device 42.

[0023] The main battery 31 is a secondary battery that outputs a relatively high DC voltage for driving the motor generator 41. The motor generator 41 operates as a three-phase AC motor and generates driving force for traveling the AGV 10. The motor generator 41 operates as a generator when the AGV 10 decelerates and generates a three-phase AC voltage. When the motor generator 41 operates as a motor, the inverter circuit 37 converts the DC voltage of the main battery 31 into a three-phase AC voltage and supplies it to the motor generator 41. When the motor generator 41 operates as a generator, the inverter circuit 37 converts the three-phase AC voltage output by the motor generator 41 into a DC voltage and supplies it to the main battery 31.

[0024] The DC / DC converter circuit 36 ​​converts the DC voltage of the main battery 31 into a DC voltage suitable for driving the auxiliary device 42 and supplies it to the auxiliary battery 32 and the auxiliary device 42. The auxiliary device battery 32 is a secondary battery that outputs a DC voltage for driving the auxiliary device 42. The auxiliary device 42 includes various accessories such as lights for the AGV 10 and a lifting device for the loading platform 50.

[0025] The power meter 44 measures the power supplied to the power receiving coil. The measured power may be displayed on a display device provided on the AGV 10, or may be transmitted to a computer such as a server provided outside the AGV 10.

[0026] A2. Deformation of the receiving antenna part 35: As shown in FIG. 3, when the AGV 10 descends the step S from the left to the right of the drawing, the AGV 10 deforms in the vertical direction around the connecting portion 51. In other words, the AGV 10 bends so as to be convex upward around the connecting portion 51. For convenience of explanation, FIG. 3 omits configurations other than the front portion 52, the rear portion 53, the steering wheel 40, and the power receiving antenna unit 35. As described above, the power receiving antenna unit 35 is flexible as a whole and is disposed at a deformed portion of the AGV 10. Therefore, the power receiving antenna unit 35 can be at least partially deformed in response to the deformation of the AGV 10. For this reason, even if the power receiving antenna unit 35 is disposed at a deformed portion, damage to the power receiving antenna unit 35 due to the deformation of the AGV 10 can be suppressed.

[0027] According to the power receiving antenna unit 35 of the first embodiment described above, the power receiving antenna unit 35 is positioned at a deformation location on the AGV 10 that deforms, is flexible, and can deform at least partially in response to the deformation of the AGV 10. Therefore, damage to the power receiving antenna unit 35 when the AGV 10 deforms can be reduced compared to a configuration in which the power receiving antenna unit 35 is not flexible.

[0028] Furthermore, since the power receiving antenna unit 35 can be disposed at the deformed location, restrictions on the mounting position of the power receiving antenna unit 35 can be reduced.

[0029] B. Second embodiment: 4 differs from the power receiving device 3 of the first embodiment in that it further includes a support device 60. Other configurations of the power receiving device 3a of the second embodiment are the same as those of the power receiving device 3 of the first embodiment, so the same configurations are denoted by the same reference numerals and detailed description thereof will be omitted.

[0030] 4, the support device 60 is provided at a deformed portion on the underside of the AGV 10, and supports the power receiving antenna unit 35. The support device 60 is made of, for example, a flexible member. Such members are, for example, flexible brackets, angles, wires, vibration-damping sheets, etc. manufactured by processing a resin material. Therefore, the support device 60 in this embodiment is flexible as a whole.

[0031] The support device 60 is at least partially deformable in response to deformation of the AGV 10. Therefore, even if the support device 60 is disposed at a deformation location of the AGV 10, damage to the support device 60 can be suppressed. Furthermore, since the support device 60 is disposed between the power receiving antenna unit 35 and the AGV 10, even if a shock such as a large vibration is applied to the AGV 10, the shock applied to the power receiving antenna unit 35 can be reduced.

[0032] The power receiving device 3a of the second embodiment described above provides the same effects as the power receiving device 3 of the first embodiment. Moreover, the power receiving device 3a of the second embodiment further includes a support device 60 that supports the power receiving antenna unit 35. The support device 60 is flexible and can be at least partially deformed in response to the deformation of the AGV 10, so that damage to the support device 60 when the AGV 10 deforms can be suppressed. Even if the AGV 10 is subjected to a shock such as a large vibration, the shock applied to the power receiving antenna unit 35 can be reduced compared to a configuration that does not include the support device 60.

[0033] C. Third embodiment: 5 differs from the power receiving device 3 of the first embodiment in that it further includes a support device 60b. Other configurations of the power receiving device 3b of the third embodiment are the same as those of the power receiving device 3 of the first embodiment, so the same configurations are denoted by the same reference numerals and detailed description thereof will be omitted.

[0034] As shown in FIG. 5, the support device 60b is provided at a deformed portion of the underside of the AGV 10, and supports the power receiving antenna unit 35. The support device 60b is configured by a bracket, an angle, a wire, a vibration-damping sheet, and the like. Unlike the support device 60 of the second embodiment, the support device 60b of the third embodiment does not necessarily have to be configured by a flexible member. The support device 60b includes a joint unit 61. The joint unit 61 is a joint structure provided so that the support device 60b can deform (bend) in the vertical direction in response to the deformation of the AGV 10. The joint unit 61 is configured as, for example, a hinge, a ball joint, a gear, a link mechanism, a joint, and the like. Note that the joint unit 61 is not limited to these structures, and may be any structure that can realize the bending of the support device 60b. Also, in FIG. 5, one joint unit 61 is provided at the deformed portion, but the number of joint units 61 is not limited to one, and multiple joint units may be provided.

[0035] The power receiving device 3b of the third embodiment described above provides the same effects as the power receiving device 3 of the first embodiment. The power receiving device 3b of the third embodiment further includes a support device 60b, which has a joint 61 and is at least partially deformable in response to the deformation of the AGV 10, thereby preventing damage to the support device 60b when the AGV 10 deforms. Even if the AGV 10 is subjected to a large shock such as vibration, the shock applied to the power receiving antenna unit 35 can be reduced compared to a configuration not including the support device 60b.

[0036] D. Fourth embodiment: 6 differs from the power receiving device 3 of the first embodiment in that it further includes a support device 60c configured with a plurality of second portions 62. Other configurations of the power receiving device 3c of the third embodiment are the same as those of the power receiving device 3 of the first embodiment, so the same configurations are denoted by the same reference numerals and detailed description thereof will be omitted.

[0037] As shown in Fig. 6, the support device 60c is provided at a deformed portion of the underside of the AGV 10, and supports the power receiving antenna unit 35. The support device 60c is composed of a plurality of second parts 62. Each of the plurality of second parts 62 is arranged to avoid the deformed portion of the AGV 10. Note that in Fig. 6, the plurality of second parts 62 are provided in total of two, one each at the front part 52 and the rear part 53, but the number is not limited to two, and any number of second parts 62, three or more, may be provided. Each of the plurality of second parts 62 is composed of a bracket, an angle, a wire, a vibration-damping sheet, etc.

[0038] The power receiving device 3c of the fourth embodiment described above provides the same effects as the power receiving device 3 of the first embodiment. The power receiving device 3c of the fourth embodiment also has a support device 60c made up of a plurality of second parts 62, and each of the plurality of second parts 62 is disposed to avoid the deformation portion of the AGV 10, so that damage to the support device 60c when the AGV 10 is deformed can be suppressed. Even if the AGV 10 is subjected to a large shock such as vibration, the shock applied to the power receiving antenna unit 35 can be reduced compared to a configuration not including the support device 60c.

[0039] E. Fifth embodiment: 7 differs from the power receiving device 3 of the first embodiment in that a power receiving antenna unit 35d is composed of a plurality of first portions 65 and that the plurality of first portions 65 are electrically connected to each other. Since the other configurations of the power receiving device 3d of the fifth embodiment are the same as those of the power receiving device 3 of the first embodiment, the same configurations are denoted by the same reference numerals and detailed description thereof will be omitted.

[0040] Each of the first parts 65 includes a power receiving coil and a case for accommodating the power receiving coil. The power receiving coil and the case in the first embodiment are flexible, but the power receiving coil and the case in the fifth embodiment do not necessarily have to be flexible. Each of the first parts 65 is disposed on the underside of the AGV 10 to avoid deformed areas. Each of the first parts 65 is electrically connected to each other by a conductor 73. The conductor 73 in this embodiment is made of a flexible material. Such a material is, for example, copper. In FIG. 7, the first parts 65 are provided in two pieces, one each in the front part 52 and the rear part 53, but the number is not limited to two, and any number of first parts 65, three or more, may be provided.

[0041] According to the power receiving antenna unit 35d of the fifth embodiment described above, the power receiving antenna unit 35d is composed of a plurality of first portions 65, and each of the plurality of first portions 65 is positioned to avoid the deformation areas of the AGV 10 that are prone to deformation. Therefore, damage to the power receiving antenna unit 35d due to deformation of the AGV 10 can be suppressed compared to a configuration in which the power receiving antenna unit 35d is positioned at the deformation area.

[0042] F. Sixth embodiment: 8 differs from the power receiving device 3d of the fifth embodiment in that it further includes a support device 60e. Other configurations of the power receiving device 3e of the sixth embodiment are the same as those of the power receiving device 3d of the fifth embodiment, so the same configurations are denoted by the same reference numerals and detailed description thereof will be omitted.

[0043] 8, the support device 60e is provided at a deformed portion on the underside of the AGV 10, and supports the power receiving antenna unit 35d. More specifically, the support device 60e supports each of the multiple first portions 65. Like the support device 60 of the second embodiment, the support device 60e is made of a flexible member and is therefore flexible as a whole.

[0044] The power receiving device 3e of the sixth embodiment described above provides the same effects as the power receiving device 3d of the fifth embodiment. The power receiving device 3e of the sixth embodiment further includes a support device 60e that supports the power receiving antenna unit 35d. The support device 60e is flexible and can be at least partially deformed in response to the deformation of the AGV 10, so that damage to the support device 60e during deformation of the AGV 10 can be suppressed. Even if the AGV 10 is subjected to a large vibration or other shock, the shock applied to the power receiving antenna unit 35d can be reduced compared to a configuration that does not include the support device 60e.

[0045] G. Seventh embodiment: 9 differs from the power receiving device 3d of the fifth embodiment in that it further includes a support device 60f. Other configurations of the power receiving device 3f of the seventh embodiment are the same as those of the power receiving device 3d of the fifth embodiment, so the same configurations are denoted by the same reference numerals and detailed description thereof will be omitted.

[0046] As shown in FIG. 9, the support device 60f is provided at the deformed portion of the underside of the AGV 10, and supports each of the first portions 65. The support device 60f is formed of a bracket, an angle, a wire, a vibration-damping sheet, etc. Unlike the support device 60e of the sixth embodiment, the support device 60f of the seventh embodiment does not necessarily have to be formed of a flexible material. The support device 60f of the seventh embodiment has a joint portion 61, similar to the support device 60b of the third embodiment. Note that, although one joint portion 61 is provided at the deformed portion in FIG. 9, the number of joint portions 61 is not limited to one, and may be multiple.

[0047] The power receiving device 3f of the seventh embodiment described above provides the same effects as the power receiving device 3d of the fifth embodiment. The power receiving device 3f of the seventh embodiment further includes a support device 60f, which has a joint 61 and is at least partially deformable in response to the deformation of the AGV 10, thereby preventing damage to the support device 60f when the AGV 10 deforms. Even if the AGV 10 is subjected to a large vibration or other shock, the shock applied to the power receiving antenna unit 35d can be reduced compared to a configuration not including the support device 60f.

[0048] H. Eighth embodiment: 10 differs from the power receiving device 3d of the fifth embodiment in that it further includes a support device 60g formed of a plurality of second portions 62. Other configurations of the power receiving device 3g of the eighth embodiment are the same as those of the power receiving device 3d of the fifth embodiment, and therefore the same configurations are denoted by the same reference numerals and detailed description thereof will be omitted.

[0049] As shown in Fig. 10, the support device 60g is provided at a deformed portion of the underside of the AGV 10, and supports a plurality of first portions 65. The support device 60g of the eighth embodiment is composed of a plurality of second portions 62, similar to the support device 60c of the fourth embodiment. Each of the plurality of second portions 62 is disposed so as to avoid the deformed portion of the AGV 10. Note that in Fig. 6, a total of two second portions 62 are provided, one each at the front portion 52 and the rear portion 53, but the number of second portions 62 is not limited to two, and any number of three or more second portions 62 may be provided.

[0050] The power receiving device 3g of the eighth embodiment described above provides the same effects as the power receiving device 3d of the fifth embodiment. The power receiving device 3g of the eighth embodiment has a support device 60g made up of a plurality of second parts 62, and each of the plurality of second parts 62 is arranged to avoid the deformation portion of the AGV 10, so that damage to the support device 60c when the AGV 10 is deformed can be suppressed. Even if the AGV 10 is subjected to a large vibration or other shock, the shock applied to the power receiving antenna part 35d can be reduced compared to a configuration not provided with the support device 60g.

[0051] I. Other forms: (I1) In each of the above embodiments, the power receiving devices 3, 3b, 3c, 3d, 3e, 3f, and 3g are mounted on the AGV 10, but the present disclosure is not limited thereto. The power receiving devices 3, 3a, 3b, 3c, 3d, 3e, 3f, and 3g may be mounted on any type of moving body. Note that any type of moving body may not have the connecting portion 51. In such a configuration without the connecting portion 51, the power receiving antenna unit 35 described in the first to fourth embodiments may be disposed in a location that is easily deformed when the any type of moving body ascends and descends the step S. In addition, the power receiving antenna unit 35d described in the fifth to eighth embodiments may be disposed to avoid the location that is easily deformed. The location that is easily deformed is, for example, near the center in the front-rear and left-right directions at the bottom of the moving body.

[0052] (I2) In the above embodiment, the deformed portion is a portion on the underside of the AGV 10 that deforms (bends) when the AGV 10 ascends or descends a step or climbs over an obstacle, but the present disclosure is not limited to this. The deformed portion may be a side or upper surface of the moving body. An example of a deformed portion on a side is a connection portion between a driver's seat and a cargo bed in a trailer, or a connection portion between cars in a train. Such a deformed portion deforms (bends) in the left-right direction when the trailer or train turns. In addition, the power receiving antenna unit 35, 35d is provided on the lower portion of the AGV 10, but the present disclosure is not limited to this. The power receiving antenna unit 35, 35d may be provided on the side or upper portion of the moving body.

[0053] (I3) In the first to fourth embodiments, the power receiving antenna unit 35, 35d is configured with a flexible power receiving coil and case, and thus the power receiving antenna unit 35, 35d as a whole has flexibility, but the present disclosure is not limited thereto. As shown in FIG. 11, the power receiving antenna unit 35h may be configured with a plurality of split coils 70 and a soft film 71 covering the split coils 70. The plurality of split coils 70 are electrically connected to each other by conductors. Even with this configuration, the power receiving antenna unit 35h can bend at the connection portions between the split coils 70. This allows the power receiving antenna unit 35h as a whole to have flexibility.

[0054] (I4) In each of the above embodiments, the power receiving antenna unit 35, 35d, 35h may further include a shield and a ferrite core. The shield prevents electromagnetic waves from propagating to devices other than the power receiving antenna unit 35, 35d, 35h. The shield is made of a flexible metal such as aluminum. The ferrite core is used to adjust the inductance of the power receiving coil. The ferrite core is made of a flexible magnetic material such as rubber ferrite.

[0055] (I5) In the above embodiments, the power receiving antenna units 35, 35d, and 35h are provided with a case, but the present disclosure is not limited to this. The power receiving antenna units 35, 35d, and 35h may be configured not to include a case.

[0056] (I6) In each of the above embodiments, components other than the power receiving antenna units 35, 35d, and 35h of the power receiving devices 3, 3b, 3c, 3d, 3e, 3f, and 3g can be mounted in a manner that avoids the deformed portions.

[0057] (I7) In the fifth to eighth embodiments, the first portions 65 are electrically connected to one another by conductors, but the present disclosure is not limited to this. The first portions 65 may be connected to one another in a non-contact manner so as to be able to supply electric power to one another.

[0058] (I8) In each of the above embodiments, the non-contact power supply system 1 is a magnetic field coupling type that supplies power using the power transmission coil 21 and the power receiving coil, but the present disclosure is not limited thereto. The non-contact power supply system 1 may be any non-contact power supply type, such as an electric field coupling type or a radio wave reception type. In the case of the electric field coupling type, the non-contact power supply system 1 includes a power transmission side electrode and a power receiving side electrode instead of the power transmission coil 21 and the power receiving coil. Also, the power receiving antenna units 35, 35d, and 35h include at least a power receiving side electrode. In such a configuration, the power receiving side electrode is made of a flexible member or is made of multiple parts. In the case of the radio wave reception type, the non-contact power supply system 1 includes a power transmission antenna and a power receiving antenna instead of the power transmission coil 21 and the power receiving coil. Also, the power receiving antenna units 35, 35d, and 35 include at least a power receiving antenna. In such a configuration, the power receiving antenna is made of a flexible member or is made of multiple parts.

[0059] (I9) In the third and seventh embodiments, the support devices 60b and 60f may have a configuration in which a plurality of second portions 62 are connected to each other by joints 61.

[0060] (I10) In the first to fourth embodiments, the power receiving antenna section 35 is flexible as a whole, but the present disclosure is not limited thereto. The power receiving antenna section 35 may be partially flexible as long as it can be deformed in response to the deformation of the moving body. Also, in the second and sixth embodiments, the support devices 60 and 60e are flexible as a whole, but the present disclosure is not limited thereto. The support devices 60 and 60e may be partially flexible as long as it can be deformed in response to the deformation of the moving body.

[0061] The present disclosure is not limited to the above-mentioned embodiment, and can be realized in various configurations without departing from the spirit of the present disclosure. For example, the technical features in the embodiments corresponding to the technical features in each aspect described in the Summary of the Invention column can be appropriately replaced or combined to solve some or all of the above-mentioned problems or to achieve some or all of the above-mentioned effects. Furthermore, if the technical feature is not described as essential in this specification, it can be appropriately deleted. [Explanation of symbols]

[0062] 1... non-contact power supply system, 2... power transmission device, 3, 3a, 3b, 3c, 3d, 3e, 3f, 3g... power receiving device, 4... road, 21... power transmission coil, 24... power transmission circuit, 25... external power source, 26... power transmission control unit, 31... main battery, 32... auxiliary battery, 33... power supply control unit, 34... power receiving circuit, 35, 35d, 35h... power receiving antenna unit, 36... DC / DC converter circuit 37 ... inverter circuit, 40 ... steering wheel, 41 ... motor generator, 42 ... auxiliary machine, 43 ... driving wheel, 44 ... power meter, 50 ... loading platform, 51 ... coupling part, 52 ... front part, 53 ... rear part, 60, 60b, 60c, 60e, 60f, 60g ... support device, 61 ... joint part, 62 ... second part, 65 ... first part, 70 ... split coil, 71 ... film, 73 ... conductor, S ... step

Claims

1. A power receiving device (3, 3a, 3b, 3c) that is supplied with power contactlessly from a power transmitting device (2) and is mounted on a moving object (10), A power receiving antenna unit (35, 35h) is provided, The power receiving antenna unit is A power receiving coil is made of a flexible conductive wire, and a case is made of a flexible resin member or metal member and stores the power receiving coil in the case. The movable body is disposed at a deformation location, which is a portion that deforms in the movable body, and has flexibility as a whole and is at least partially deformable in response to the deformation. Powered device.

2. A power receiving device (3d, 3e, 3f, 3g) that is supplied with power contactlessly from a power transmitting device (2) and is mounted on a moving body (10), The moving body has a front portion (52) located on the front side, a rear portion (53) located on the rear side, and a connecting portion (53) connecting the front portion and the rear portion, A power receiving antenna portion (35d) constituted by a plurality of first portions (65), Each of the plurality of first portions is a deformation portion that is a portion of the movable body that deforms, and is arranged to avoid a deformation portion located below the connecting portion. Powered device.

3. The power receiving device according to claim 2 , wherein the first portions are electrically connected to each other by a flexible member.

4. The power receiving device according to any one of claims 1 to 3, The power receiving antenna unit is further provided with a support device (60, 60e) mounted on the moving body and supporting the power receiving antenna unit, The support device is disposed at the deformation location, has flexibility, and is at least partially deformable in response to the deformation of the moving body. Powered device.

5. The power receiving device according to any one of claims 1 to 3, The power receiving antenna unit is further provided with a support device (60b, 60f) mounted on the moving body and supporting the power receiving antenna unit, The support device has a joint portion (61) and is at least partially deformable in response to the deformation of the moving body. Powered device.

6. The power receiving device according to any one of claims 1 to 3, The power receiving antenna unit is further provided with a support device (60c, 60g) mounted on the moving body and supporting the power receiving antenna unit, The support device is formed by a plurality of second portions (62), Each of the plurality of second portions is arranged to avoid the deformation portion. Powered device.

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