Non-contact power supply system

Abstract

To accurately diagnose the existence of abnormality in a plurality of motor systems.SOLUTION: Non-contact power supply systems 1, 1a to 1i comprise: mobile bodies 30, 31a to 31d, 32a to 32d, 33 to 35 that include a power reception device 310 and transfer work objects at a first work area WA1 and a second work area WA2 from the first work area and the second work to the second work area; and power transmission devices 21 to 25 capable of supplying power to the power reception device in a non-contact manner in a state in which the mobile bodies are stopped or moving at least at stop scheduled positions Ar11, Ar13, Ar22 to Ar25, Ar27, Ar32, Ar201, Ar41, Ar202, Ar51, Ar52, Ar61 to Ar64, Ta1 to Tg1, Ta2, Tc2, Te2, Tg2, Th3, Tj3, Tl3, Ar23a at which the mobile bodies are scheduled to be stopped in a movement path for the mobile bodies between the first work area and the second work area. The power reception device includes at least a power reception coil 311 provided on a side surface side of its mobile body.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a contactless power supply system. [Background technology]

[0002] Conventionally, in factories and warehouses, transport systems have been proposed that use moving objects such as automated guided vehicles (AGVs) and autonomous forklifts to transport work objects such as products and parts. In the system of Patent Document 1, moving objects such as autonomous forklifts and autonomous AGVs transport cargo delivered by truck from a truck berth to a production site. Patent Document 1 also discloses that the moving objects are charged by non-contact power supply (wireless power supply). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-62964 Summary of the Invention [Problem to be solved by the invention]

[0004] Although Patent Document 1 mentions the efficiency of transporting work objects in factories and warehouses, it only states that "wireless power supply can eliminate the need for manual charging of batteries" with regard to contactless power supply (wireless power supply). However, in order to supply power contactlessly, a moving object needs to travel near a power transmission device or stop near a power transmission device, and such movement of the moving object affects the efficiency of transport. For this reason, a technology is desired that can realize the efficiency of transporting work objects by taking into account the movement of the moving object for contactless power supply. [Means for solving the problem]

[0005] According to an embodiment of the present disclosure, a contactless power supply system (1, 1a to 1i) is provided. The contactless power supply system includes a power receiving device (310), a moving body (30, 31a to 31d, 32a to 32d, 33 to 35) that transports a work object in a first work area (WA1) and a second work area (WA2) from the first work area to the second work area, and a stop planned position (Ar11, Ar13, Ar22 to Ar25, Ar27, Ar32, Ar20) where the moving body is scheduled to stop within a movement path of the moving body between the first work area and the second work area. and a power transmitting device (21-25) capable of contactlessly supplying power to the power receiving device in at least one of a state in which the moving body is stopped and a state in which the moving body is moving along the movement path in Ar1, Ar41, Ar202, Ar51, Ar52, Ar61-Ar64, Ta1-Tg1, Ta2, Tc2, Te2, Tg2, Th3, Tj3, Tl3, Ar23a, and the power receiving device has a power receiving coil (311) provided at least on a side of the moving body.

[0006] According to the non-contact system of the above embodiment, the power transmission device is provided that can supply power to the power receiving device in a non-contact manner in at least one of a state where the moving body is stopped at a planned stop position where the moving body is planned to stop within the moving path from the first work site to the second work site and a state where the moving body is moving along the moving path, and therefore it is not necessary to travel to a power transmission device provided at a position off the moving path for non-contact power supply. Therefore, it is possible to realize efficient transportation of the work object. In addition, since no space is required for the moving body to travel to the power transmission device separately from the moving path, it is possible to save space in the working area. In addition, since the power receiving device has a power receiving coil provided at least on the side side of the moving body, it is not necessary to place the power transmission device underground or under the floor. Therefore, the system is easy to build.

[0007] The present disclosure may be realized in various forms, for example, in the form of a vehicle position estimation method, a vehicle position estimation device, a computer program for realizing the vehicle position estimation method, a non-transitory recording medium on which such a computer program is recorded, etc. [Brief description of the drawings]

[0008] [Figure 1] 1 is a side view showing a schematic configuration of a transport system to which a contactless power supply system according to an embodiment of the present disclosure is applied. [Diagram 2] FIG. 1 is a top view showing a schematic configuration of a transport system according to a first embodiment. [Diagram 3] 2 is a block diagram illustrating a schematic configuration of a moving object and a first power transmitting device. FIG. [Figure 4] FIG. 11 is a side view showing a schematic configuration of a transport system to which a non-contact power supply system according to a second embodiment is applied. [Diagram 5] FIG. 11 is a top view showing a schematic configuration of a transport system according to a second embodiment. [Figure 6] FIG. 11 is a block diagram showing the configuration of a moving body according to a second embodiment. [Figure 7] FIG. 11 is a top view showing a schematic external shape of a moving body according to a second embodiment. [Figure 8] FIG. 11 is a block diagram showing a configuration of a power transmitting device according to a second embodiment. [Figure 9] FIG. 11 is a side view showing a schematic configuration of a transport system to which a non-contact power supply system according to a third embodiment is applied. [Figure 10] FIG. 11 is a top view showing a schematic configuration of a transport system according to a third embodiment. [Figure 11] FIG. 11 is a side view showing a schematic configuration of a transport system to which a non-contact power supply system according to a fourth embodiment is applied. [Figure 12] FIG. 13 is a top view showing a schematic configuration of a transport system according to a fourth embodiment. [Figure 13] FIG. 13 is a side view showing a schematic configuration of a transport system to which a non-contact power supply system according to a fifth embodiment is applied. [Figure 14] FIG. 13 is a top view showing a schematic configuration of a transport system according to a fifth embodiment. [Figure 15] FIG. 13 is a side view showing a schematic configuration of a transport system to which a non-contact power supply system according to a sixth embodiment is applied. [Figure 16]FIG. 13 is a side view showing a schematic configuration of a transport system to which a contactless power supply system according to a seventh embodiment is applied. [Figure 17] FIG. 13 is a top view showing a schematic configuration of a transport system to which a non-contact power supply system according to an eighth embodiment is applied. [Figure 18] FIG. 13 is a top view showing a schematic configuration of a transport system to which a non-contact power supply system according to a ninth embodiment is applied. [Figure 19] FIG. 23 is a top view showing a schematic configuration of a transport system to which a non-contact power supply system according to a tenth embodiment is applied. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] A. First embodiment: A1. Equipment configuration: The contactless power supply system 1 shown in Fig. 1 and Fig. 2 is applied to a transport system for carrying a work object B1 out of a truck TR parked at a truck berth Ar2 and transporting it to a predetermined inspection position Ar14 in an indoor area Ar1. The work object B1 placed at the inspection position Ar14 is inspected by a worker m1. The inside of the truck TR corresponds to the "first workplace WA1" in this disclosure. The inspection position Ar14 corresponds to the "second workplace WA2" in this disclosure.

[0010] The contactless power supply system 1 includes three moving objects 30, three first power transmission devices 21, one second power transmission device 22, and one third power transmission device 23. Note that, for convenience of illustration, one moving object 30 and one third power transmission device 23 are omitted in Fig. 1. The moving object 30 is configured as a forklift-type automated guided vehicle (AGV) capable of transporting a work target B1.

[0011] 3, the moving object 30 includes a power receiving device 310, a power receiving circuit 321, a main battery 334, a DC / DC converter circuit 331, an inverter circuit 332, a motor 333, an auxiliary battery 335, an auxiliary device 336, a driving control unit 340, a reading unit 350, and a communication unit 360. Note that FIG. 3 shows a schematic external configuration of the moving object 30 and the first power transmission device 21 when viewed in the traveling direction of the moving object 30.

[0012] The power receiving device 310 receives power transmitted from the power transmitting devices 21 to 23. The power receiving device 310 includes a power receiving coil 311 housed in a housing and wiring (not shown). The power receiving coil 311 is connected to a power receiving circuit 321. The power receiving coil 311 has a planar coil made of wire wound in a predetermined plane. The power receiving coil 311 is arranged along the traveling direction of the moving body 30. In other words, the power receiving coil 311 is arranged so that the central axis of the power receiving coil 311 is perpendicular to the traveling direction of the moving body 30. In this embodiment, the power receiving device 310 is arranged to protrude laterally from a side surface of a housing 39 of the moving body 30. The power receiving device 310 may be arranged inside the housing 39.

[0013] The power receiving circuit 321 includes a rectifier circuit that converts the AC voltage output from the power receiving coil 311 into a DC voltage. The DC power output from the power receiving circuit 321 can be used to charge the main battery 334 and drive the motor 333 via the inverter circuit 332. The DC power is stepped down using the DC / DC converter circuit 331 and used to charge the auxiliary battery 335 and drive the auxiliary device 336. The main battery 334 is a secondary battery that outputs a relatively high DC voltage for driving the motor 333. The DC / DC converter circuit 331 is configured as a step-down converter and adjusts the voltage output from the power receiving circuit 321 to a voltage that can be used by the auxiliary battery 335 and the auxiliary device 336. The inverter circuit 332 converts the DC voltage of the main battery 334 into a three-phase AC voltage and supplies it to the motor 333. The motor 333 is a three-phase AC motor that generates a rotational force for a tire 370 of the moving object 30. The auxiliary battery 335 is a secondary battery that outputs a DC voltage for driving the auxiliary 336. The auxiliary 336 corresponds to, for example, a driving control unit 340, a reading unit 350, and a communication unit 360 described later. The driving control unit 340 controls the entire moving body 30. The reading unit 350 reads markers provided at a predetermined position in the indoor area Ar1 and a predetermined position in the truck TR, and transmits the read information to the driving control unit 340. For example, a two-dimensional marker corresponds to the marker. Based on the information obtained by reading the marker, the driving control unit 340 controls the operation of the moving body 30. For example, the driving control unit 340 executes acceleration, deceleration, stopping, right and left turns, etc. of the moving body 30 based on the information read from the marker. The communication unit 360 is configured to be capable of wireless communication with the outside.

[0014] The power transmission devices 21 to 23 transmit power to the mobile object 30 in a non-contact manner. The first power transmission device 21, the second power transmission device 22, and the third power transmission device 23 differ only in the manner of installation, and have the same functional configuration. The first power transmission device 21 is installed on a floor. The second power transmission device 22 is installed by hanging from a ceiling. The third power transmission device 23 is installed on a wall. The configurations of the power transmission devices 21 to 23 will be described using FIG. 3 as a representative for the first power transmission device 21, and descriptions of the second power transmission device 22 and the third power transmission device 23 will be omitted.

[0015] 3, the first power transmission device 21 includes a power transmission section 210, a power transmission circuit 221, and a power supply section 222. The power transmission section 210 includes a power transmission coil 211 housed in a housing and wiring (not shown). The power transmission coil 211 is connected to the power transmission circuit 221. In this embodiment, the power transmission section 210 is disposed so as to protrude from a side surface of a housing 29 of the first power transmission device 21. The power transmission section 210 may be disposed inside the housing 29. The power transmission coil 211 is disposed so that a central axis of the power transmission coil 211 is perpendicular to the traveling direction of the moving object 30.

[0016] The power transmission circuit 221 is a circuit that converts a DC voltage supplied from the power supply unit 222 into a high-frequency AC voltage and applies it to the power transmission coil 211, and includes an inverter circuit, a filter circuit, and a resonant circuit. In this embodiment, the inverter circuit, the filter circuit, and the resonant circuit are well known, so their description will be omitted. The power supply unit 222 is a circuit that supplies a DC voltage to the power transmission circuit 221. For example, the power supply unit 222 receives power supplied from a system power supply via a power factor correction circuit (PFC) and supplies the power to the power transmission circuit 221. Note that the power supply unit 222 may receive power from the system power supply, convert the voltage to 50 / 60 Hz AC, and distribute it to each power transmission circuit 221, and each power transmission circuit 221 may perform PFC and AC-DC conversion. PFC is not shown. The DC voltage output by the power supply unit 222 may not be a perfect DC voltage, and may include a certain degree of fluctuation (ripple). The power supply unit 222 of the first power transmission device 21 is electrically connected to the system power supply via, for example, underfloor power wiring. On the other hand, the power supply unit 222 of the second power transmission device 22 is electrically connected to the system power supply via power wiring provided in the ceiling or the like.

[0017] 1 and 2, in this embodiment, the power transmission devices 21-23 are installed at predetermined positions Ar11, Ar12, Ar13, Ar14, Ar15, and Ar16. These positions Ar11-Ar16 are present within the movement path of the moving object 30 between the first work area WA1 and the second work area WA2.

[0018] Among these positions Ar11 to Ar16, positions Ar11, Ar13, Ar15, and Ar16 correspond to positions where the moving body 30 is scheduled to stop (hereinafter referred to as "scheduled stop positions"). Position Ar11 corresponds to a position where the moving body 30 is scheduled to stop in order to adjust the position of the fork before getting on the truck TR. Position Ar13 corresponds to a position where the moving body 30 loaded with the work object B1 is scheduled to stop in order to unload the work object B1 at the second work area WA2, i.e., the inspection position Ar14. Position Ar15 shown in FIG. 2 is a position equivalent to a space previously set for waiting for one's turn to get on the truck TR. In this embodiment, this position Ar15 is set near the pillar P1, which is a fixed object. Position Ar16 corresponds to a position where the moving body 30 is scheduled to stop in the truck TR in order to load the work object B1. The moving object 30 can receive power supply from the power transmitting devices 21 to 23 while it is stopped at the positions Ar11, Ar13, Ar15, and Ar16.

[0019] On the other hand, the remaining position Ar12 corresponds to a position where power can be supplied contactlessly to the power receiving device 310 of the moving body 30 passing through the area on the moving path from inside the truck TR (inside the first work area WA1) to the inspection position Ar14 (second work area WA2) in the area through which the moving body 30 passes. The moving body 30 can receive power supply from the first power transmission device 21 when passing through the position Ar12 while traveling on the moving path.

[0020] In a configuration in which the truck TR is an EV (electric vehicle) or a PHEV (plug-in hybrid vehicle), when charging the battery of the truck TR, the power distribution path may be branched to supply power to the power supply unit 222 of the first power transmission device 21 as well. In a configuration in which the truck TR is a hybrid vehicle (HEV), power may be generated in the truck TR and supplied to the power supply unit 222 of the first power transmission device 21.

[0021] According to the contactless power supply system 1 of the first embodiment described above, the power transmission devices 21 to 23 capable of supplying power to the power receiving device 310 in a contactless manner are provided in a state where the moving body 30 is stopped at least at a planned stop position where the moving body 30 is planned to stop within the moving path of the moving body 30 from the first work site WA1 to the second work site WA2, and in a state where the moving body 30 is moving along the moving path. Therefore, it is not necessary for the moving body 30 to travel to a power transmission device provided at a position off the moving path for contactless power supply. Therefore, it is possible to realize the efficiency of transportation of the work object B1. In addition, since no space is required for the moving body 30 to travel to the power transmission device separately from the moving path, it is possible to save space in the working area. In addition, since the power receiving device 310 has at least the power receiving coil 311 provided on the side side of the moving body 30, it is not necessary to place the power transmission devices 21 to 23 underground or under the floor. Therefore, the system is easy to build.

[0022] In addition, since the power receiving coil 311 is provided so that the central axis of the power receiving coil 311 is perpendicular to the traveling direction, it is possible to improve the power receiving efficiency via the power transmitting coil 211, which is provided so that the central axis is perpendicular to the side surface, in the third power transmitting device 23 provided on the side surface of the fixed object (pillar P1). Similarly, the first power transmitting device 21 and the second power transmitting device 22 are also provided so that their central axes are perpendicular to the traveling direction of the moving object 30, so that the power receiving coil 311 and the power transmitting coil 211 can face each other when the moving object 30 stops or passes by, thereby improving the power receiving efficiency.

[0023] In addition, the power transmission device 21 installed at position Ar12 is installed in a position in the area of ​​the moving path through which the moving body 30 passes, where it can supply power contactlessly to the power receiving device 310 of the moving body 30 as it passes. Therefore, by supplying power to the moving body 30 while it is moving, the utilization efficiency of the moving body 30 can be increased and the efficiency of transporting work objects can be improved compared to a configuration in which the moving body 30 is placed at a position other than the moving path and power is supplied thereto, or a configuration in which the moving body 30 is stopped at position Ar12 and power is supplied thereto.

[0024] B. Second embodiment: The contactless power supply system 1a shown in Fig. 4 and Fig. 5 is applied to a transport system for transporting a work target B1 stored in a storage shelf 50 from positions Ar21 and Ar26, which are inspection locations, to a predetermined position in a storage area Ar200, which is a predetermined storage location of the movable storage shelf 50. Note that configurations at positions Ar26 and Ar27 are omitted in Fig. 4. In the second embodiment, positions Ar21 and Ar22 correspond to a first work area WA1 in this disclosure, and storage area Ar200 corresponds to a second work area WA2 in this disclosure.

[0025] As shown in FIG. 4, after the work object B1 is inspected by the worker m4 at the position Ar21, the worker m3 puts it in the storage shelf 50 temporarily placed at the position Ar22. The storage shelf 50 has a plurality of shelves. As shown in FIG. 4 and FIG. 5, the storage shelf 50 is configured so that any one of the moving bodies 31a, 31b, and 31c can be placed under the lowest shelf. In the example of FIG. 4 and FIG. 5, the moving body 31a is placed under the lowest shelf of the storage shelf 50 at the position Ar22. Moreover, the moving body 31b is placed under the lowest shelf of the storage shelf 50 at the position Ar24. Moreover, the moving body 31c is placed under the lowest shelf of the storage shelf 50 at the position Ar25. The moving bodies 31a to 31c can lift and move the storage shelf 50. The storage shelf 50 is configured so that it can stand on its own in contact with the floor surface when it is not lifted by the moving bodies 31a to 31c. In this state, the movable bodies 31a to 31c are also able to enter and exit the area below the lowest shelf of the storage rack 50. The storage rack 50, in which all shelves have the work targets B1 stored therein at position Ar22, is moved to a predetermined position in the storage area Ar200 by any of the movable bodies 31a to 31c.

[0026] The configuration of the moving body 31a is different from that of the moving body 30 of the first embodiment in that it does not have a fork, that it has a mechanism for raising and lowering the storage rack 50 at the top, that it has a substantially rectangular shape in a plan view in the vertical direction, and that its height is lower than the height from the floor surface to the lowest shelf of the storage rack 50, but the other configurations are the same. Therefore, in the moving body 31a as well, the power receiving device 310 is arranged to protrude laterally from the side surface of the housing of the moving body 31a. The side surface on which the power receiving device 310 is arranged in the moving body 31a is the longitudinal side surface. The effect of making the side surface on which the power receiving device 310 is arranged the longitudinal side surface will be described with reference to FIG. 7.

[0027] 7, the configuration of a comparative example in which the power receiving device 310 is arranged on the side surface S2 in the short direction, unlike the mobile body 31a, is shown by a dashed line together with the mobile body 31a. When the power receiving device 310 is arranged on the side surface S1 in the long direction, as in the mobile body 31a, the turning radius r1 of the mobile body 31a is smaller than the turning radius r2 of the mobile body in the comparative example. Therefore, when the mobile body 31a moves, interference with fixed objects, etc. can be suppressed. Note that, as the mechanism for raising and lowering the above-mentioned storage rack 50, for example, a jack device using hydraulics, screws, etc. can be used.

[0028] As shown in Fig. 6, the configuration of the moving body 31b is different from that of the moving body 31a in that the moving body 31b includes a power receiving arm section 380, and that the power receiving device 310 protrudes laterally from a side surface of the housing 39 of the moving body 31b and is configured to be stored in the side surface of the housing 39 of the moving body 31b. Note that a mechanism for lifting the storage shelf 50 is omitted in Fig. 6. The power receiving arm section 380 has one end fixed to the main body of the moving body 31b and the other end connected to the power receiving device 310. The power receiving arm section 380 causes the power receiving device 310 to protrude from the side surface of the housing 39 of the moving body 31b and moves the power receiving device 310 so that the protruding power receiving device 310 is stored in the side surface of the housing 39 of the moving body 31b.

[0029] As shown in FIG. 5, the configuration of the moving body 31c is different from that of the moving body 31a in that the side surface on which the power receiving device 310 is arranged is a side surface in the short direction, but the other configurations are the same.

[0030] 4 and 5, the contactless power supply system 1a includes a plurality of power transmission devices 24. In Fig. 4 and Fig. 5, only the power transmission devices 24 provided at some positions Ar24 and Ar25 in the storage area Ar200 are shown, and the power transmission devices 24 provided at other positions are omitted.

[0031] 8, the power transmission device 24 differs from the first power transmission device 21 of the first embodiment in that it includes a power transmission-side arm section 234, that the power transmission unit 210 protrudes laterally from a side surface of the housing 29 of the power transmission device 24 and is configured to be stored in the side surface of the housing 29 of the power transmission unit 210, and that the power transmission unit 210 is located at a position closer to the floor surface. One end of the power transmission-side arm section 234 is fixed to the main body of the power transmission device 24, and the other end is connected to the power transmission unit 210. The power transmission-side arm section 234 causes the power transmission unit 210 to protrude from the side surface of the housing 29 of the power transmission device 24, and moves the power transmission unit 210 so that the protruding power transmission unit 210 is stored in the side surface of the housing 29 of the power transmission device 24.

[0032] As shown in FIG. 4 and FIG. 5, the power transmitting device 24 is disposed at positions Ar22, Ar23, Ar24, Ar25, and Ar27. As described above, the position Ar22 is a position where the storage rack 50 is temporarily placed in order to store the work target B1 in the storage rack 50. Therefore, the moving body 31a stops at the position Ar22 and can receive power from the power transmitting device 24. When the moving body 31a is under the lowest shelf of the storage rack 50 and the power receiving device 310 faces the power transmitting device 24, the distance between the power transmitting device 24 and the moving body 31a is relatively large. However, as shown in FIG. 5, the power transmitting device 24 extends the power transmitting side arm portion 234 to bring the power transmitting unit 210 closer to the moving body 31a. As a result, the distance between the power transmitting unit 210 and the power receiving device 310 becomes appropriate, and the contactless power supply is normally performed.

[0033] Position Ar23 is provided midway along a path along which the movable bodies 31a-31c, which move the storage rack 50 with all shelves loaded with work objects B1 (hereinafter referred to as a "fully loaded state"), move to a predetermined position within the storage area Ar200. Therefore, the movable bodies 31a-31c can receive power from the power transmitting device 24 when passing near position Ar23.

[0034] Positions Ar24 and Ar25 are located in the vicinity of the position where the storage rack 50 is stored in the storage area Ar200. Therefore, the moving bodies 31a to 31c that stop to take down the storage rack 50 and place it in a predetermined position can receive power from the power transmitting device 24 located at positions Ar24 and Ar25. At position Ar24, the moving body 31b extends the power receiving side arm portion 380 to bring the power receiving device 310 closer to the power transmitting device 24. Therefore, the distance between the power transmitting unit 210 and the power receiving device 310 becomes appropriate, and non-contact power supply is normally performed. On the other hand, at position Ar25, the power receiving device 310 of the moving body 31c is located in a position close to the power transmitting device 24, so the distance between the power transmitting unit 210 and the power receiving device 310 is appropriate. Therefore, the power transmitting side arm portion 234 of the power transmitting device 24 is not extended.

[0035] Position Ar27 is a location for carrying out the work of loading the work target B1 inspected at position Ar26 onto the storage shelf 50, and similar to position Ar22, the storage shelf 50 is temporarily placed there. In the example of FIG. 5, the storage shelf 50 is not placed at position Ar27. In this state, the mobile objects 31a to 31c are not present at position Ar27. Therefore, in the power transmission device 24 placed at position Ar27, the power transmission unit 210 is stored on the side of the housing. Therefore, it is possible to prevent the storage shelf 50 from interfering with the power transmission device 24 when the mobile objects 31a to 31c carrying the empty storage shelf 50 arrive at position Ar27.

[0036] The contactless power supply system 1a of the second embodiment described above has the same effects as the contactless power supply system 1 of the first embodiment. In addition, since the power receiving devices 310 of the moving bodies 31a and 31b are attached to the longitudinal side surfaces of the housing 39, the turning radius of the moving bodies 31a and 31b as a whole can be made smaller and interference with fixed objects and the like can be suppressed, compared to a configuration in which the power receiving devices 310 are attached to the ends in the lateral direction.

[0037] Furthermore, since the moving body 31b is connected to the power receiving device 310, causes the power receiving device 310 to protrude from a side surface of the housing 39 of the moving body 31b, and includes a power receiving-side arm unit 380 that moves the power receiving device 310 so that the protruding power receiving device 310 is accommodated in the side surface of the housing 39 of the moving body 31b, the distance between the power transmitting unit 210 and the power receiving device 310 can be adjusted to an appropriate size, thereby improving power receiving efficiency. For example, even if the position of the moving body 31b in the movement path deviates from the expected position for some reason, the distance between the power transmitting unit 210 and the power receiving device 310 can be adjusted to an appropriate distance.

[0038] Furthermore, power transmitting device 24 is connected to power transmitting section 210, and includes power transmitting side arm section 234 that causes power transmitting section 210 to protrude from housing 29 of power transmitting device 24 and moves power transmitting section 210 so as to accommodate protruding power transmitting section 210 in housing 29 of the power transmitting device, so that the distance between power transmitting section 210 and power receiving device 310 can be adjusted to an appropriate size. Furthermore, since power transmitting section 210 can be accommodated in housing 29 when contactless power supply is not being performed, it is possible to prevent power transmitting device 24 from interfering with other objects such as moving bodies 31a to 31c.

[0039] C. Third embodiment: The contactless power supply system 1b shown in Fig. 9 and Fig. 10 differs from the second embodiment in the types of moving objects and power transmission devices used. Specifically, as shown in Fig. 9 and Fig. 10, the contactless power supply system 1b of the third embodiment uses moving objects 32a, 31d, 32b, and 33.

[0040] The mobile body 32a is configured as a forklift-type AGV, similar to the mobile body 30 of the first embodiment. The mobile body 32a differs from the mobile body 30 shown in FIG. 3 in that the power receiving device 310 is disposed inside a housing. The mobile body 32a is located at a position Ar21 and is stopped for loading and unloading the work target B1. At this time, as shown in FIG. 10, contactless power supply is performed from the first power transmission device 21 described in the first embodiment to the mobile body 32a (power receiving device 310).

[0041] The mobile body 31d differs from the mobile body 31a of the second embodiment in that the power receiving device 310 is disposed inside the housing 39. The mobile body 31d is located at a position Ar22, and receives power from the power transmitting device 24 while an operator (not shown) is storing the work target B1 in the storage shelf 50. Note that the first power transmitting device 21 and the power transmitting device 24 are omitted in FIG. 9 for convenience of illustration.

[0042] The moving body 32b is configured as a forklift-type AGV having a multi-stage fork. The moving body 32b is different from the moving body 32a in that the moving body 32b has a multi-stage fork f1 and that the power receiving device 310 is configured as a separate body from the main body of the moving body 32b. Two work objects B1 are mounted on each fork f1. As shown in FIG. 9, in the moving body 32b, the power receiving device 310 is configured as a separate body from the main body 390 of the moving body 32b. The power receiving device 310 is supported by a support 38 extending vertically upward from the ceiling surface of the main body 390. Therefore, the power receiving device 310 is located above the main body 390. Note that FIG. 9 shows a power receiving circuit 321 as a schematic configuration within the main body 390. Since the power receiving device 310 is configured as a separate body from the main body 390, it is possible to reduce the space required for accommodating a mechanism for contactless power supply in the main body 390, thereby enabling the size of the main body 390 to be reduced. When passing through the position Ar23, the moving object 32b receives power from the first power transmitting device 21 arranged at the position Ar23.

[0043] The moving body 33 differs from the moving body 31a in that the power receiving device 310 is disposed at the front end of the side surface and protrudes in the traveling direction. With this configuration, the power receiving device 310 protrudes, so that it can be brought closer to the power transmitting device 21, and the power receiving efficiency can be improved.

[0044] The contactless power supply system 1b of the third embodiment described above provides the same effects as the contactless power supply system 1 of the first embodiment and the contactless power supply system 1a of the second embodiment.

[0045] D. Fourth embodiment: 11 and 12 differs from the second embodiment in the types of moving body and power transmission device used, and in that the work object B1 is placed on a pallet pa1 and transported and stored along the transport path. Specifically, as shown in Fig. 11 and 12, the contactless power supply system 1c of the fourth embodiment uses moving bodies 32c and 32d in addition to the moving body 30 described above.

[0046] The mobile body 32c is the same as the mobile body 32b of the third embodiment in that the power receiving device 310 is integrally configured with the main body of the mobile body 32b. The mobile body 32c is located at a position Ar31, and receives power from the first power transmitting device 21 while an operator (not shown) is unloading the work target B1 from the mobile body 32c and placing it on the pallet pa1.

[0047] The moving body 30, which is located at the position Ar32, stops in order to place the work target B1 placed on the pallet pa1 onto the fork. At this time, the moving body 30 receives power from the first power transmission device 21. At the position Ar32, a worker m4 is operating the moving body 30 by a remote controller.

[0048] As shown in Fig. 12, the storage area Ar201 is provided with two shelf rows L1 and L2 in which a plurality of storage shelves 50 are arranged. The width of the aisle C1 between the two shelf rows L1 and L2 is relatively narrow, and is wide enough for only one moving body 32d to pass through. In this embodiment, the aisle C1 is a one-way street, and the end closer to the position Ar32 is set as an entrance EN1 of the aisle C1. As shown in Figs. 11 and 12, the moving body 32d enters the aisle C1 from the entrance EN1 and is about to place the work object B1 placed on the pallet pa1 on the top shelf of the second storage shelf 50 from the entrance EN1.

[0049] The moving body 32d is configured as a forklift-type AGV. The moving body 32d differs from the moving body 30 in that it has a fork that can be raised and lowered to a relatively high position and that it is equipped with two power receiving devices 310 and two power receiving circuits 321, but the other configurations are the same as those of the moving body 30. Note that only two power receiving devices 310 are shown in FIG. 12. The two power receiving devices 310 are provided on both ends of the moving body 32d in the width direction.

[0050] The contactless power supply system 1c includes, as power transmission devices, the first power transmission device 21 arranged at the position Ar31 described above, the first power transmission device 21 arranged at the position Ar32, a third power transmission device 23 arranged on the wall surface of the storage shelf 50 closest to the entrance EN1 in the shelf row L1, and two fifth power transmission devices 25. The third power transmission device 23 is the same as the third power transmission device 23 of the first embodiment described above.

[0051] The fifth power transmission device 25 differs from the power transmission device 24 in that it does not include the power transmission side arm portion 234 and the power transmission unit 210 does not protrude from or is not housed in the housing 29, but the other configurations are similar to those of the power transmission device 24. As shown in FIG. 12, the two power transmission devices 25 are arranged below the lowest level of the storage shelf 50 closest to the entrance EN1 in the shelf row L1 and below the lowest level of the storage shelf 50 closest to the entrance EN1 in the shelf row L2, and face each other. The lower part of the lowest level of the storage shelf 50 corresponds to a part lower than the minimum ground height at which the movable body 32d can pick up the work target B1 from the shelf. In this embodiment, the fifth power transmission device 25 is arranged at the bottom of the storage shelf 50 so that the surface of the housing 29 on the power transmission unit 210 side is located within 500 mm (millimeters) from the end of the side facing the aisle C1, in other words, the side where the movable body 32d picks up the work target B1. Furthermore, the fifth power transmission device 25 is disposed such that the power transmission unit 210 is disposed at a position facing the power receiving device 310 when the work target B1 is picked up from the storage shelf 50 that is closest to the entrance EN1 in the two shelf rows L1 and L2. That is, the two power transmission devices 25 are disposed such that the power transmission unit 210 faces the passage C1. When the mobile object 32d enters the passage C1 from the entrance EN1, the mobile object 32d passes between the two power transmission devices 25 and receives power from the two power transmission devices 25 at this time. By receiving power from the two power transmission devices 25 simultaneously in this manner, the amount of power supply can be increased and power supply efficiency can be improved.

[0052] The contactless power supply system 1c of the fourth embodiment described above provides the same effects as the contactless power supply system 1 of the first embodiment and the contactless power supply system 1a of the second embodiment. In addition, since the third power transmission device 23 is disposed on the wall surface of the storage shelf 50, the dead space beside the storage shelf 50 can be effectively utilized. Moreover, compared to a configuration in which a fixture for fixing the third power transmission device 23 is provided separately from the storage shelf 50, the installation cost of the contactless power supply system 1c can be reduced, and the installation space of the contactless power supply system 1c can be reduced.

[0053] Furthermore, since the two power transmitting devices 25 are arranged such that the power transmitting units 210 face the passage C1, contactless power supply from the power transmitting devices 25 to the power receiving device 310 can be performed when the moving body 32d takes out the work target B1 from the storage shelf 50 or stops to store the work target B1 in the storage shelf 50. Therefore, compared to a configuration in which the moving body 32d is stopped for contactless power supply separately from taking out the work target B1 from the storage shelf 50 or storing it, it is possible to increase the usage efficiency of the moving body 32d and improve the transport efficiency of the work target.

[0054] In addition, the two power transmission devices 25 are installed such that each power transmission unit 210 is located on the side of the passage C1 closer to the entrance EN1, so that contactless power supply can be performed to the moving object 32d traveling at the timing of entering the passage C1. The side of the passage C1 closer to the entrance EN1 is a place where the moving object 32d is likely to pass, so that the possibility of contactless power supply can be increased. In addition, since power is received from the two power transmission devices 25 simultaneously, the amount of power supply can be increased, and power supply efficiency can be improved.

[0055] Furthermore, since the power transmission device 25 is installed in a portion of the storage shelf 50 that is lower than the minimum ground clearance at which the work object B1 can be picked up, the power transmission device 25 can be installed by utilizing dead space in the storage shelf 50 that is not used for storing the work object B1, thereby improving the storage efficiency of the storage shelf 50 and realizing space saving in the installation space of the non-contact power supply system 1c.

[0056] Furthermore, at least a portion of the power transmitting device 25 is located within 500 mm from the end of the storage shelf 50 on the side where the moving body 32d picks up the work target B1 at the bottom of the storage shelf 50, so that the distance between the power transmitting device 25 and the power receiving device 310 can be prevented from becoming excessively large compared to a configuration in which not even a portion of the power transmitting device 25 is located within 500 mm from the end. Furthermore, installation of the power transmitting device 25 and replacement work for maintenance and the like can be easily performed.

[0057] Furthermore, since the power transmitting device 25 is disposed such that the power transmitting unit 210 is disposed at a position directly facing the movable body 32d when the movable body 32d picks up the work target B1 stored in the storage shelf 50, it is possible to perform contactless power supply from the power transmitting device 25 to the power receiving device 310 when the movable body 32d stops to pick up the work target B1. Therefore, it is possible to increase the usage efficiency of the movable body 32d and improve the transport efficiency of the work target B1, compared to a configuration in which the movable body 32d is stopped for contactless power supply in addition to stopping to pick up the work target B1.

[0058] E. Fifth embodiment: A contactless power supply system 1d of the fifth embodiment shown in Figs. 13 and 14 differs from the contactless power supply system 1c of the fourth embodiment in that the work target B1 is stored in the storage shelf 50 without using a pallet pa1.

[0059] As shown in FIG. 14, three shelf rows L11, L12, and L13 are provided in the storage area Ar202. An aisle C2 is provided between the shelf rows L11 and L12. A fifth power transmission device 25 is provided at the bottom of the storage rack 50 at the position closest to the entrance EN2 of the aisle C2 in the two shelf rows L11 and L12. A third power transmission device 23 is provided on the side wall of the shelf row L11. A position Ar41 is a position in front of the entrance EN2, and corresponds to a waiting position for a moving object about to enter the aisle C2. A first power transmission device 21 is provided at the position Ar41, and the first power transmission device 21 supplies power to a moving object 32c stopped at the position Ar41.

[0060] The contactless power supply system 1d of the fifth embodiment described above provides the same effects as the contactless power supply system 1c of the fourth embodiment.

[0061] F. Sixth embodiment: A contactless power supply system 1e according to a sixth embodiment shown in Fig. 15 is applied to a manufacturing process. Specifically, in a factory, an inspection location for a work object B1 such as a part used in a work is set at a position Ar51 adjacent to a workspace Ar53 where a worker performs the work, and a power transmission device 24 is disposed at the position Ar51. The work object B1 is transported by a moving body (not shown) and placed at the position Ar51. At this time, the moving body receives power from the power transmission device 24. The part (work object B1) inspected by a worker m5 at the position Ar51 is used for the work in the workspace Ar53.

[0062] A semi-finished product (hereinafter, referred to as "work object B2") obtained by work in workspace Ar53 is placed on a moving body 34 by a worker m6 and transported to the vicinity of the industrial robot 61. The moving body 34 differs from the moving body 33 of the third embodiment shown in FIG. 9 in that a power receiving device 310 is housed inside the housing of the moving body, but other configurations are the same as the moving body 33. The industrial robot 61 picks up the transported work object B2 from the moving body 34 and performs a predetermined processing on the work object B2. The power transmitting device 24 is disposed on a mounting table 62 of the industrial robot 61. When the work object B2 is picked up, the moving body 34 stops near the mounting table 62 and receives power from the power transmitting device 24.

[0063] The contactless power supply system 1e of the sixth embodiment described above provides the same effects as the contactless power supply system 1 of the first embodiment.

[0064] G. Seventh embodiment: The contactless power supply system 1f of the seventh embodiment shown in FIG. 16 is applied to a manufacturing process, similarly to the contactless power supply system 1e of the sixth embodiment. Specifically, in a factory, the third power transmission device 23 is arranged at positions Ar61, Ar62, and Ar63 in the vicinity of the place where the worker performs the work, and at a position Ar64 where the moving body 34 is scheduled to stop. The position Ar61 corresponds to a position in the vicinity of the place where the worker m7 performs the work such as inspection. The position Ar62 corresponds to the position of the place where the worker m8 performs the work. Similarly, the position Ar63 corresponds to the position of the place where the worker m9 performs the work. The industrial robot 61 at the right end includes a power receiving coil 64 and a battery (not shown) that stores the power supplied via the power receiving coil 64. The work object to be processed by the industrial robot 63 is transported by the moving body 34. Here, a moving body (different from the moving body 34) not shown in the figure includes a power receiving device 310 and a power transmitting unit having a configuration similar to that of the power transmitting unit 210. When such a moving body stops near a position Ar65 where the industrial robot 63 is located in order to supply a work object to the industrial robot 63, power is supplied contactlessly from the power transmitting unit to the power receiving coil 64 of the industrial robot 63. Note that a so-called "cell production system" may be adopted in which workers m8, m9 and the industrial robot 63 perform all the processes at their respective positions Ar62, Ar63, and Ar65.

[0065] The contactless power supply system 1f of the seventh embodiment described above provides the same effects as the contactless power supply system 1 of the first embodiment.

[0066] H. Eighth embodiment: A contactless power supply system 1g of the eighth embodiment shown in Fig. 17 is applied to two production lines FL1 and FL2 consisting of a total of seven processes from process A to process G. These two production lines FL1 and FL2 are linear production lines installed parallel to each other. The production line FL1 includes production tables Ta1 to Tg1 for each process. Similarly, the production line FL2 includes production tables Ta2 to Tg2 for each process.

[0067] In the production line FL1, a moving body 35 transports semi-finished products between each process. Therefore, the moving body 35 stops in front of each production table Ta1-Tg1. At each production table Ta1-Tg1, a power transmission device 21 is provided at a position facing the moving path of the moving body 35. Therefore, while the moving body 35 is stopped at each production table Ta1-Tg1, that is, while processing is being performed at each production table Ta1-Tg1, the moving body 35 receives power from the first power transmission device 21. The moving body 35 differs from the moving body 34 of the sixth and seventh embodiments in that it includes two power receiving devices 310. The two power receiving devices 310 are disposed at positions close to the left and right ends in the moving direction of the moving body 35. The two power receiving devices 310 are connected in parallel to each other with respect to the main battery 334 and the motor 333.

[0068] In the production line FL2, the moving body 34 transports the semi-finished products between each process. Therefore, the moving body 35 stops in front of each production table Ta2 to Tg2. The moving body 34 is the same as the moving body 34 in the sixth and seventh embodiments. Among the production tables Ta2 to Tg2, four production tables Ta2, Tc2, Te2, and Tg2 are provided with power transmission devices 21 at positions facing the moving path of the moving body 34. The processing time at these four production tables Ta2, Tc2, Te2, and Tg2 is longer than the processing time at the other production tables. Therefore, in the production line FL2, the first power transmission device 21 is provided only at a position where power can be supplied for a longer time. In addition to the position facing the moving path of the moving body 34 at the production table Tg2, the first power transmission device 21 is also provided at a position facing the moving path of the moving body 35 in the adjacent production line FL1. Therefore, while processing is being performed at the production table Tg1, the moving body 35 can receive power from both the first power transmitting device 21 provided at the production table Tg1 and the first power transmitting device 21 provided at the production table Tg2.

[0069] The contactless power supply system 1g of the eighth embodiment described above provides the same effects as the contactless power supply system 1 of the first embodiment.

[0070] I. Ninth embodiment: A contactless power supply system 1h according to the eighth embodiment shown in Fig. 18 is applied to a production line FL3 that includes a total of six processes from process H to process M. The production line FL3 is a U-turn shaped production line. The production line FL3 includes production tables Th3 to Tm3 for each process.

[0071] In the production line FL3, a moving body 34 transports semi-finished products in each process. Therefore, the moving body 34 stops in front of each production table Ta1 to Tg1. The moving body 34 is the same as the moving body 34 in the sixth and seventh embodiments. At three production table Th3, Tj3, and Tl3 among the production table Th3 to Tm3, a power transmission device 21 is provided at a position facing the movement path of the moving body 34. The processing time at these three production table Th3, Tj3, and Tl3 is longer than the processing time at the other production table. Therefore, in the production line FL3, the first power transmission device 21 is provided only at a position where power can be supplied for a longer time.

[0072] The contactless power supply system 1h of the ninth embodiment described above provides the same effects as the contactless power supply system 1 of the first embodiment and the contactless power supply system 1g of the eighth embodiment.

[0073] J. Tenth embodiment: A contactless power supply system 1i of the tenth embodiment shown in Fig. 19 differs from the contactless power supply system 1a of the second embodiment in the installation position of a power transmission device 24, but other configurations are the same as those of the contactless power supply system 1a. Note that a moving object is omitted in Fig. 19.

[0074] In the tenth embodiment, the movement path Rd10 from the position Ar21, i.e., the inspection location to the three storage shelves 50 arranged in the storage area Ar200, includes a plurality of sub-movement paths. In addition, in order to easily distinguish the three storage shelves 50 from each other, hereinafter, they are called storage shelves 50a, 50b, and 50c. These three storage shelves 50a, 50b, and 50c correspond to the "sub-work area" in this disclosure. The first sub-movement path is composed of a path Rd1 that leads from the position Ar21, which is the inspection location, to the storage area Ar200, a path Rd2 that intersects with the path Rd1 and forms a T-shaped path together with the path Rd1, and a path Rd3 that extends from the path Rd2 and passes next to the storage shelf 50a. The second sub-movement path is composed of the path Rd1, the path Rd2, and a path Rd4 that extends from the path Rd2 and passes next to the storage shelf 50b. The third sub-pathway is made up of a path Rd1, a path Rd2, and a path Rd5 that extends from the path Rd2 and passes next to the storage rack 50c. The above-mentioned three paths Rd3, Rd4, and Rd5 are parallel to each other. The power transmission device 24 is disposed in a position in a common path among the three sub-pathways, in an area through which the moving body passes, where the power transmission device 24 can supply power to the moving body passing through in a non-contact manner. Specifically, in this embodiment, the power transmission device 24 is disposed in the path Rd1 facing a position Ar23a close to a portion connected to the path Rd2. Therefore, the moving body can receive power from the power transmission device 24 when moving from the position Ar21 to any of the three storage racks 50a to 50c.

[0075] The contactless power supply system 1i of the tenth embodiment described above provides the same effects as the contactless power supply system 1 of the first embodiment and the contactless power supply system 1a of the second embodiment.

[0076] K. Other Embodiments: (K1) In each embodiment, the power receiving coil 311 is provided so that the central axis of the power receiving coil 311 is perpendicular to the traveling direction of the moving object, but the present disclosure is not limited to this. The central axis of the power receiving coil 311 may be provided so that it is in a direction that obliquely intersects the traveling direction of the moving object or is parallel to the traveling direction.

[0077] (K2) In the fourth and fifth embodiments, the passages C1 and C2 are one-way, but they may be bidirectional. In such a configuration, both ends of the passages C1 and C2 serve as entrances, and the fifth power transmission device 25 may be disposed at either end.

[0078] (K3) In the fourth and fifth embodiments, the fifth power transmission device 25 is disposed under the bottom shelf of the storage shelf 50, but may be disposed at any position in the storage shelf 50 where power can be transmitted to the power receiving device 310 of the moving body 32d. The fifth power transmission device 25 is disposed so that the surface of the power transmission unit 210 side of the housing 29 is located within 500 mm (millimeters) from the end of the moving body 32d picking up the work target B1, but the present disclosure is not limited to this. For example, the entire fifth power transmission device 25 may be disposed within 500 mm (millimeters) from the end of the pick-up side. That is, in general, the fifth power transmission device 25 may be disposed so that at least a part of the fifth power transmission device 25 is located within 500 mm (millimeters) from the end of the pick-up side. The fifth power transmission device 25 may be disposed so that at least a part of the fifth power transmission device 25 is located within any distance that can be reached, not limited to 500 mm, from the end of the pick-up side.

[0079] (K4) In the moving body 31b, the power receiving device 310 may be protruded from the side of the housing 39 of the moving body 31b, and a pantograph or a spring may be used instead of the power receiving side arm portion 380 as a mechanism for storing the protruding power receiving device 310 in the side of the housing 39 of the moving body 31b.

[0080] The present disclosure is not limited to the above-mentioned embodiments, and can be realized in various configurations without departing from the spirit of the present disclosure. For example, the technical features in each embodiment corresponding to the technical features in the form described in the Summary of the Invention column can be appropriately replaced or combined in order to solve some or all of the above-mentioned problems or to achieve some or all of the above-mentioned effects. Furthermore, if a technical feature is not described as essential in this specification, it can be appropriately deleted. [Explanation of symbols]

[0081] Reference Signs List 1, 1a to 1i... non-contact power supply system, 21 to 25... power transmission device, 30, 31a to 31d, 32a to 32d, 33 to 35... moving body, Ar11, Ar13, Ar22 to Ar25, Ar27, Ar32, Ar201, Ar41, Ar202, Ar51, Ar52, Ar61 to Ar64, Ta1 to Tg1, Ta2, Tc2, Te2, Tg2, Th3, Tj3, Tl3, Ar23a... position (planned stop position), 310... power receiving device, 311... power receiving coil, WA1... first work area, WA2... second work area

Claims

1. A non-contact power supply system (1, 1a to 1i), comprising: a power receiving device (310), and a moving body (30, 31a to 31d, 32a to 32d, 33 to 35) that has the power receiving device and conveys a work object in a first work area (WA1) and a second work area (WA2) from the first work area to the second work area; a power transmission device (21 to 25) that can supply power to the power receiving device in a non-contact manner in at least one of a state where the moving body stops at a stop planned position (Ar11, Ar13, Ar22 to Ar25, Ar27, Ar32, Ar201, Ar41, Ar202, Ar51, Ar52, Ar61 to Ar64, Ta1 to Tg1, Ta2, Tc2, Te2, Tg2, Th3, Tj3, Tl3, Ar23a) where the moving body is planned to stop and a state where the moving body is moving along the movement path within the movement path of the moving body between the first work area and the second work area; provided with: the power receiving device has a power receiving coil (311) provided at least on the side surface side of the moving body; the power transmission device is arranged on a fixture installed in the movement path; the fixture includes one or more storage shelves for storing the work object, and is a non-contact power supply system.

2. In the non-contact power supply system according to Claim 1, the power transmission device has a power transmission unit including at least a power transmission coil; the fixture includes a plurality of the storage shelves that are spaced apart so as to form a passage with a width that allows one moving body to pass through and does not allow a plurality of moving bodies to pass by each other; the power transmission device is arranged such that the power transmission unit faces the passage, and is a non-contact power supply system.

3. In the non-contact power supply system according to Claim 2, it is provided with a plurality of the power transmission devices; the passage has an entrance set in advance; the plurality of the power transmission devices are installed such that each power transmission unit is located on the side of the passage closer to the entrance, and is a non-contact power supply system.

4. In the non-contact power supply system according to Claim 1, the moving body is configured to be able to pick up the work object stored in the storage shelf; the power transmission device is installed at a portion lower than the lowest ground height at which the work object can be picked up in the storage shelf, and is a non-contact power supply system.

5. In the non-contact power supply system according to Claim 4, The power transmission device is installed such that at least a part thereof is located within 500 mm (millimeters) from the end of the storage shelf on the side where the moving body picks up the work object at the lowermost part of the storage shelf. A non-contact power supply system.

6. In the non-contact power supply system according to Claim 1, the power transmission device has a power transmission unit including at least a power transmission coil, the moving body is configured to be able to pick up the work object stored in the storage shelf, the power transmission device is arranged such that the power transmission unit is arranged at a position facing the moving body when the moving body picks up the work object stored in the storage shelf. A non-contact power supply system.

7. A non-contact power supply system (1, 1a to 1i), having a power receiving device (310), and a moving body (30, 31a to 31d, 32a to 32d, 33 to 35) that conveys a work object in a first work area (WA1) and a second work area (WA2) from the first work area to the second work area, Among the moving paths of the moving body between the first work area and the second work area, at least at a stop planned position (Ar11, Ar13, Ar22 to Ar25, Ar27, Ar32, Ar201, Ar41, Ar202, Ar51, Ar52, Ar61 to Ar64, Ta1 to Tg1, Ta2, Tc2, Te2, Tg2, Th3, Tj3, Tl3, Ar23a) where the stop of the moving body is planned, in at least one of the state where the moving body stops and the state where the moving body is moving on the moving path, a power transmission device (21 to 25) capable of non-contact power supply to the power receiving device, comprising, the power receiving device has at least a power receiving coil (311) provided on the side surface side of the moving body, the power transmission device is installed at a position where non-contact power supply to the power receiving device of the passing moving body is possible in a region of the moving path through which the moving body passes, the second work area includes two or more sub-work areas, the moving path includes a plurality of sub-moving paths from the first work area to each of the two or more sub-work areas, the power transmission device is installed at a position where non-contact power supply to the power receiving device of the passing moving body is possible in a region of a common path that is a common path in the plurality of sub-moving paths. A non-contact power supply system.

8. In the non-contact power supply system according to Claim 7, The housing of the moving body has a contour shape having a longitudinal direction and a lateral direction when viewed in the vertical direction. The power receiving device is a non-contact power supply system attached to the side surface in the longitudinal direction among the side surfaces of the housing.

9. In the non-contact power supply system according to Claim 7, in the moving body, the attitude with respect to the traveling direction is predetermined, the power receiving coil is provided such that the central axis of the power receiving coil is in a direction orthogonal to the traveling direction, a non-contact power supply system.

10. In the non-contact power supply system according to Claim 7, the power receiving device is arranged so as to be able to project outward from the side surface of the housing of the moving body, the moving body is connected to the power receiving device, and further has a power receiving side arm portion that projects the power receiving device from the side surface of the housing of the moving body and moves the projected power receiving device to be housed in the side surface of the housing of the moving body, a non-contact power supply system.

11. In the non-contact power supply system according to Claim 7, the power transmission device is arranged on a fixture installed in the movement path, a non-contact power supply system.

12. In the non-contact power supply system according to Claim 7, the power transmission device is a power transmission unit including at least a power transmission coil, the power transmission unit being arranged so as to be able to project outward from the housing of the power transmission device, and a power transmission side arm portion connected to the power transmission unit, moving the power transmission unit to project the power transmission unit from the housing of the power transmission device and to house the projected power transmission unit in the housing of the power transmission device, a non-contact power supply system having.

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