WO2021166109A1

WO2021166109A1 - Non-contact power supply system

Info

Publication number: WO2021166109A1
Application number: PCT/JP2020/006474
Authority: WO
Inventors: 佑典鈴木; 加藤　進一
Original assignee: 株式会社Ｆｕｊｉ
Priority date: 2020-02-19
Filing date: 2020-02-19
Publication date: 2021-08-26
Also published as: JPWO2021166109A1; JP7395707B2

Abstract

This non-contact power supply system is equipped with a plurality of types of power transmission/reception units each provided with: a plurality of power transmission units that supply electric power; and at least one power reception unit that receives electric power in a non-contact manner from at least one of the power transmission units opposing said power reception unit. The power reception unit of the plurality of types of power transmission/reception units is disposed in a conveyance device that conveys articles in a production facility.

Description

Contactless power supply system

This specification discloses a technique relating to a contactless power supply system.

The non-contact power supply system described in Patent Document 1 includes a power transmission coil, a power reception coil, a position / angle adjustment mechanism for the power transmission coil, a detection means, and a control unit. The position / angle adjusting mechanism of the power transmission coil adjusts the position and relative angle of the power transmission coil with respect to the power receiving coil. The detecting means detects the distance from the power transmitting coil to the power receiving coil and the tilt angle with respect to the vertical direction. The control unit adjusts the position and relative angle of the power transmission coil with respect to the power reception coil via the position / angle adjustment mechanism of the power transmission coil based on the detection result of the detection means, and the power of the power supplied from the power transmission device to the power reception device. Control so that the transmission efficiency becomes the maximum value.

The wireless power transmission method described in Patent Document 2 defines an inclination angle of the central axis of the power transmission coil or the power reception coil with respect to the coil center connection line passing through the coil center of the power transmission coil and the coil center of the power reception coil. In the wireless power transmission method described in Patent Document 2, there is a distance between the central axis of the power receiving coil and the coil center of the power transmission coil or a misalignment amount between the central axis of the power transmission coil and the coil center of the power receiving coil. Occasionally, the direction of at least one central axis of the power transmitting coil and the power receiving coil is adjusted so that the tilt angle becomes smaller.

International Publication No. 2018/150678 Japanese Unexamined Patent Publication No. 2012-191699

In a non-contact power supply system in which a power receiving unit is provided in a transport device that transports goods in a production facility, there is a demand for improving power transmission efficiency.

In view of such circumstances, the present specification discloses a non-contact power feeding system in which a power receiving unit is provided in the transport device and which can improve the power transmission efficiency.

This specification discloses a contactless power supply system. The non-contact power supply system includes a plurality of types of power transmission / reception units including a plurality of power transmission units for supplying power and at least one power reception unit for receiving the power in a non-contact manner from at least one of the power transmission units facing each other. do. The power receiving unit of the plurality of types of the power transmitting / receiving unit is provided in a transport device for transporting an article in a production facility.

The above-mentioned non-contact power supply system includes a plurality of types of power transmission / reception units, and the power receiving units of the plurality of types of power transmission / reception units are provided in the transport device. Therefore, in a non-contact power feeding system in which a power receiving unit is provided in the transport device, the power transmission efficiency can be improved as compared with the case where one type of power transmitting / receiving unit is provided.

It is a top view which shows the structural example of a production facility. It is a side view which shows the structural example of the power transmission / reception unit in which a power transmission part is provided in one side wall part of a production facility. FIG. 5 is a plan view showing a configuration example of a power transmission / reception unit in which a power transmission unit is provided on a plurality (two) side wall portions of a production facility. It is a side view which shows the structural example of the power transmission / reception unit in which the power transmission part is provided in the floor part of the production equipment. It is a top view which shows the structural example of a power transmission unit. It is a top view which shows an example of the state in which a plurality of power transmission units are arranged on the floor. It is a top view which shows the structural example of the power receiving unit. It is a circuit diagram which shows an example of the power feeding circuit which performs non-contact power feeding between a power transmission unit and a power receiving unit. It is a top view which shows the structural example of the power transmission unit which includes a plurality of power transmission / reception parts. It is a top view which shows the structural example of the power receiving unit which includes a plurality of power transmitting and receiving parts. It is a top view which shows the adjustment example of a power transmission direction and a power reception direction. It is a side view which shows the other adjustment example of a power transmission direction and a power reception direction. It is a schematic diagram which shows typically an example of the captured image which the feature part was imaged. It is a figure which shows an example of the change of the received voltage. It is a top view which shows an example of the uninstalled area of the production equipment which is not provided with the power transmission part. It is a top view which shows the structural example of the 1st supply part. It is a side view which shows the structural example of the 1st supply part. It is a side view which shows the other structural example of the 1st supply part. It is a top view which shows the structural example of the 2nd supply part. It is a side view which shows the structural example of the 2nd supply part. It is a top view which shows the structural example of the 3rd supply part. It is a side view which shows the structural example of the 3rd supply part, and shows the state before the transfer device collects the 3rd supply part. It is a side view which shows the structural example of the 3rd supply part, and shows the state which the transport device is collecting the 3rd supply part. It is a top view which shows an example of a movable member.

1. 1. Embodiment 1-1. Configuration Example of Power Transmission / Reception Unit 30 The non-contact power supply system 40 includes a plurality of types of power transmission / reception units 30. Each of the plurality of types of power transmission / reception units 30 includes a plurality of power transmission units 10 for supplying power, and at least one power reception unit 20 for receiving power in a non-contact manner from at least one power transmission unit 10 facing each other. The power receiving unit 20 of the plurality of types of power transmitting / receiving units 30 is provided in the transport device 60 for transporting articles in the production equipment 50. Further, the non-contact power feeding system 40 can include a power transmission efficiency adjusting unit 70. The contactless power supply system 40 may also include a power supply device 80. The non-contact power supply system 40 of the present embodiment includes a plurality of types of power transmission / reception units 30, a power transmission efficiency adjusting unit 70, and a power supply device 80.

The production equipment 50 and the transfer device 60 are not limited and may take various forms. The production facility 50 shown in FIG. 1 includes a side wall portion 51, a floor portion 52, a pillar portion 53, a ceiling portion 54, and a floor lower portion 55. In the figure, the ceiling portion 54 is removed, and the power transmission portion 10 provided in the production facility 50 is schematically shown. Further, the production equipment 50 of the present embodiment includes a plurality of (four in the figure) production lanes (A lane to D lane).

As the transport device 60, for example, an automated guided vehicle (AGV: Automatic Guided Vehicle) that does not require a driving operation by an operator can be used. The transport device 60 can move a plurality of (four) production lanes by using the electric power received by the power receiving unit 20, and can transport articles.

In one of the plurality of types of power transmission / reception units 30, the power transmission unit 10 is provided on at least one side wall portion 51 of the plurality of side wall portions 51 of the production equipment 50, and the power reception unit 20 is a plurality of transfer devices 60. It is provided on at least one side surface portion 61 of the side surface portions 61. In the power transmission / reception unit 30 shown in FIG. 2, the power transmission unit 10 is provided on one side wall portion 51 of the plurality of side wall portions 51 of the production equipment 50, and the power reception unit 20 is among the plurality of side surface portions 61 of the transfer device 60. It is provided on one side surface portion 61 of the above. The power receiving portion 20 shown by the broken line is provided on the side surface portion 61 on the back side of the paper surface.

In the power transmission / reception unit 30 shown in FIG. 3, the power transmission unit 10 is provided on two

side wall portions

51, 51 of the plurality of side wall portions 51 of the production equipment 50, and the power reception unit 20 is provided on the plurality of side surface portions 61 of the transfer device 60. It is provided on two

side surface portions

61, 61 of the two. In both the forms of FIGS. 2 and 3, the heights of the power transmission unit 10 and the power reception unit 20 are the same. Therefore, the power receiving unit 20 can receive power from at least one power transmitting unit 10 facing each other in a non-contact manner. Further, the transfer device 60 shown in FIG. 3 can receive twice as much electric power as the transfer device 60 shown in FIG. The power transmission / reception unit 30 may be provided with the power transmission unit 10 on the other side wall portion 51 shown in FIG. 1, or the power reception unit 20 may be provided on the other side surface portion 61 shown in FIG.

As shown in FIG. 4, in one of the plurality of types of power transmission / reception units 30, the power transmission unit 10 is provided on the floor 52 of the production equipment 50, and the power reception unit 20 is provided on the bottom 62 of the transfer device 60. There is. Further, as shown in FIGS. 5 and 6, the power transmission unit 10 is provided in a plurality of power transmission units 10u. At least four power transmission elements 13 are arranged in a cross shape in each of the plurality of power transmission units 10u. As shown in FIG. 6, in the plurality of power transmission units 10u, when the plurality of power transmission units 10u are arranged on the floor portion 52, the plurality of power transmission elements 13 are arranged in a grid pattern.

Further, as shown in FIG. 7, the power receiving unit 20 is provided in the power receiving unit 20u. The power receiving unit 20u is arranged at a position where the plurality of power receiving elements 21 face the plurality of power transmission elements 13 of the one power transmission unit 10u when facing the power transmission unit 10u of the plurality of power transmission units 10u. In the figure, the power transmission element 13 facing the power receiving element 21 is shown by a broken line.

FIG. 8 shows an example of a power supply circuit that performs non-contact power supply between the power transmission unit 10u and the power reception unit 20u. In the figure, for convenience of illustration, a plurality of (two) power transmission units 10 are shown, but the power transmission unit 10u includes a plurality of (four) power transmission units 10. The plurality (four) power transmission units 10 are connected in parallel with the common AC power supply 11. In each of the plurality (four) power transmission units 10, the power transmission side resonance unit 12 and the power transmission element 13 are connected in series to form a power transmission side resonance circuit. For example, a capacitor can be used for the power transmission side resonance unit 12. A coil can be used as the power transmission element 13.

Similarly, in the figure, for convenience of illustration, a plurality of (two) power receiving units 20 are shown, but the power receiving unit 20u includes a plurality of (four) power receiving units 20. In each of the plurality (4) power receiving units 20, the power receiving element 21 and the power receiving side resonance unit 22 are connected in parallel on the input side of the rectifier circuit 23, and the power receiving side resonance circuit is formed. For example, the power receiving element 21 can use a coil. A capacitor can be used for the power receiving side resonance unit 22. In this embodiment, AC power is supplied from the power transmission unit 10. The rectifier circuit 23 is a rectifier circuit that rectifies the AC power supplied from the power transmission unit 10, and a known rectifier circuit such as a diode bridge can be used. The power receiving unit 20 may also include a power converter that converts the DC power rectified by the rectifier circuit 23 into AC power.

Further, in FIGS. 5 and 6, for convenience of illustration, the description of the power transmission side resonance unit 12, the detector for detecting the power receiving unit 20u (for example, a photo sensor, etc.), the wiring shown in FIG. 8 and the like is omitted. Further, the control board CT0 is provided with a supply control device. When the power receiving unit 20u is detected by the detector, the supply control device makes it possible to supply AC power to the power transmission element 13 in which the power receiving unit 20u is detected from the AC power supply 11.

The detector is provided in the vicinity of each of the plurality of (4) power transmission elements 13, and the supply control device applies AC power from the AC power source 11 to the power transmission element 13 in which the power receiving unit 20u is detected. Supply. The AC power supplied from the common AC power source 11 is supplied to the power transmission element 13 in which the power receiving unit 20u is detected via the distribution line AC0. Similarly, in FIG. 7, for convenience of illustration, the description of the power receiving side resonance portion 22, the rectifier circuit 23, the wiring shown in FIG. 8 and the like is omitted.

Since the plurality of power transmission elements 13 are arranged in a grid pattern when the plurality of power transmission units 10u are arranged on the floor portion 52, the transport device 60 can move on the grid-like power transmission element 13. .. When the transport device 60 changes the moving direction, for example, the moving direction of the transport device 60 is changed without changing the direction of the power receiving unit 20 by means of an omnidirectional moving wheel mounted on the transport device 60. Can be done. Further, since the power transmission unit 10 is provided in the power transmission unit 10u, the operator can easily change the layout of the power transmission unit 10 by increasing or decreasing the power transmission unit 10u.

At least one of the plurality of types of power transmission / reception units 30 may include a plurality of power transmission / reception parts 30p that are simultaneously used in the same type of power transmission / reception unit 30. FIG. 9 shows a configuration example of a power transmission unit 10u having a plurality of (two in the figure) power transmission / reception parts 30p. FIG. 10 shows a configuration example of a power receiving unit 20u having a plurality of (two) power transmitting / receiving parts 30p corresponding to FIG.

The combination of the four power transmission elements 13 arranged in a cross shape shown in FIG. 5 and the four power receiving elements 21 shown in FIG. 7 corresponding to the four power transmission elements 13 is defined as one power transmission / reception part 30p. The power transmission unit 10u shown in FIG. 9 has eight power transmission elements 13 arranged in a cross shape, and the power reception unit 20u shown in FIG. 10 includes eight power reception elements 21 corresponding to the eight power transmission elements 13. These are simultaneously used in the same type of power transmission / reception unit 30 in which the power transmission unit 10 is provided on the floor 52 of the production equipment 50 and the power reception unit 20 is provided on the bottom 62 of the transfer device 60.

Therefore, in the form shown in FIGS. 9 and 10, two power transmission / reception parts 30p are provided. The form shown in FIGS. 9 and 10 includes twice as many

power transmitting elements

13 and 21 as compared with the forms shown in FIGS. 5 and 7, so that twice as much power is transmitted and twice as much power is received. be able to. The same can be said for the other types of power transmission / reception units 30. For example, the power transmission unit 10 is provided on at least one side wall portion 51 of the plurality of side wall portions 51 of the production facility 50, and the power receiving unit 20 is provided on at least one side surface portion 61 of the plurality of side surface portions 61 of the transport device 60. Also in the form provided in the above, a plurality of power transmission / reception parts 30p can be provided.

1-2. Configuration Example of the Power Transmission Efficiency Adjustment Unit 70 In at least one of the plurality of types of power transmission / reception units 30, at least one of the power transmission unit 10 and the power reception unit 20 can include the power transmission efficiency adjustment unit 70. The power transmission efficiency adjusting unit 70 determines the power transmission direction of the power transmission unit 10 and the power reception unit 20 so that the power transmission efficiency between the power transmission unit 10 and the power reception unit 20, which fluctuates with the movement of the transport device 60, becomes equal to or higher than a predetermined efficiency. Adjust at least one of the receiving directions.

The power transmission efficiency adjusting unit 70 may take various forms as long as it can adjust at least one of the power transmission direction of the power transmission unit 10 and the power reception direction of the power reception unit 20. FIG. 11 shows an example of adjusting the power transmission direction and the power reception direction. In the transport device 60 on the left side of the paper shown in the figure, the power transmission unit 10 is provided on one side wall portion 51 of the production equipment 50, and the power receiving unit 20 is provided on one side surface portion 61 of the transport device 60. In the figure, the power transmission direction of the power transmission unit 10 and the power reception direction of the power reception unit 20 coincide with each other.

Similarly, in the transport device 60 on the right side of the paper shown in the figure, the power transmitting direction of the power transmitting unit 10 on the right side of the paper and the power receiving direction of the power receiving unit 20 coincide with each other. However, in the transport device 60 on the right side of the paper shown in the figure, if the power transmission direction of the power transmission unit 10 and the power receiving direction of the power receiving unit 20 on the left side of the paper are not adjusted as shown in the figure, the power transmission efficiency may decrease. be.

FIG. 12 shows other adjustment examples of the power transmission direction and the power reception direction. In the transport device 60 shown in the figure, the power transmission unit 10 is provided at the lower floor 55 of the production equipment 50, and the power receiving unit 20 is provided at the bottom 62 of the transport device 60. The electric power supplied from the power transmission unit 10 passes through the floor unit 52 and reaches the power reception unit 20. In the figure, the power transmission direction of the power transmission unit 10 and the power reception direction of the power reception unit 20 coincide with each other.

Further, in the transport device 60 shown in the figure, the power transmission unit 10 is provided on the side wall portion 51 or the pillar portion 53 of the production equipment 50, and the power receiving unit 20 is provided on the side surface portion 61 of the transport device 60. If the power transmission direction of the power transmission unit 10 provided on the side wall portion 51 or the pillar portion 53 and the power reception direction of the power reception unit 20 provided on the side surface portion 61 are not adjusted as shown in the figure, the power transmission efficiency may decrease. be.

For example, the power transmission efficiency adjusting unit 70 uses an image pickup device 70c provided on at least one of the power transmission unit 10 and the power reception unit 20 to image the feature unit 70f provided on the other party. The feature portion 70f may take various forms as long as it can be distinguished from other parts in the captured image. For the feature portion 70f, for example, a mark (for example, a circle mark), a two-dimensional code, a reference mark for calibration, or the like can be used.

The power transmission efficiency adjusting unit 70 sets at least one of the power transmission direction and the power reception direction so that the position of the feature unit 70f in the captured image coincides with a predetermined position imaged when the power transmission direction and the power reception direction match. adjust. When the power transmission direction and the power reception direction match, it is assumed that the power transmission efficiency between the power transmission unit 10 and the power reception unit 20 is at least a predetermined efficiency or higher. FIG. 13 shows an example of an captured image captured by the feature portion 70f. In the figure, the feature portion 70f is a mark (circle). For example, when the power transmission direction and the power reception direction coincide with each other, the feature portion 70f is a diagonal corner portion 70r of the captured image at a predetermined position. It is assumed that the image is taken at 70r.

The power transmission efficiency adjusting unit 70 is among the power transmission unit 10 and the power receiving unit 20 shown in FIGS. 11 and 12 when the feature unit 70f is not imaged at a predetermined position (

diagonal corner portions

70r, 70r of the captured image). Rotate at least one of them. In the figure, the rotation axes of the power transmission unit 10 and the power reception unit 20 are schematically shown by the rotation axis AR0. The rotation axis AR0 is a direction perpendicular to the paper surface. The power transmission efficiency adjustment unit 70 ends the adjustment of at least one of the power transmission direction and the power reception direction when the feature unit 70f is imaged at a predetermined position (

diagonal corner portions

70r, 70r of the captured image).

The non-contact power supply system 40 can include a position detection device 40s that detects the position of the transfer device 60. The position detection device 40s may be, for example, an encoder provided in an electric motor for moving the transfer device 60, or a satellite positioning system or the like. The power transmission efficiency adjustment unit 70 can select an adjustment target for adjusting at least one of the power transmission direction and the power reception direction based on the position information of the transfer device 60 detected by the position detection device 40s. For example, the power transmission efficiency adjusting unit 70 selects the power transmission unit 10 within a predetermined range from the current position of the transport device 60 as the adjustment target, and the selected power transmission unit 10 to be adjusted and the power receiving unit 20 corresponding to the power transmission unit 10. For at least one of them, at least one of the power transmission direction and the power reception direction can be adjusted.

FIG. 14 shows an example of a change in the received voltage. The horizontal axis of the figure shows the angle difference between the power transmission direction and the power reception direction, and the vertical axis of the figure shows the power reception voltage. The predetermined voltage value detected when the power transmission direction and the power reception direction coincide with each other (the angle difference is zero) is indicated by the voltage VR11. As shown in the curve L11, the larger the angle difference between the power transmission direction and the power reception direction, the lower the power reception voltage.

Therefore, the power transmission efficiency adjusting unit 70 detects the received voltage of the power received by the power receiving unit 20, and the detected power receiving voltage is set to a predetermined voltage value detected when the power transmission direction and the power receiving direction match. At least one of the transmitting direction and the receiving direction can be adjusted to reach. When the power transmission direction and the power reception direction match, it is assumed that the power transmission efficiency between the power transmission unit 10 and the power reception unit 20 is at least a predetermined efficiency or higher. The characteristics of the received voltage in FIG. 14 are acquired in advance. Further, in both the form of imaging the feature unit 70f and the form of detecting the power receiving voltage, it is sufficient that the power transmission efficiency between the power transmission unit 10 and the power receiving unit 20 is equal to or higher than a predetermined efficiency, and the power transmission direction and the power receiving direction It is not limited to the case where and matches. That is, the power transmission efficiency adjusting unit 70 can also adjust at least one of the power transmission direction and the power reception direction so that the angle difference between the power transmission direction and the power reception direction falls within a predetermined allowable value. The power transmission efficiency is set so that at least the electric power required for the transport device 60 to transport the article can be received.

Further, as shown in FIGS. 11 and 12, at least a part of the plurality of power transmission units 10 is at least one of the side wall portion 51, the pillar portion 53, the ceiling portion 54, and the floor lower portion 55 of the production equipment 50. It is provided in. In either case, the power transmission efficiency adjusting unit 70 can adjust at least one of the power transmission direction of the power transmission unit 10 and the power reception direction of the power reception unit 20 by the method described above.

1-3. Configuration Example of the Power Supply Device 80 FIG. 15 shows an example of an uninstalled area 50n of the production equipment 50 in which the power transmission unit 10 is not provided. Lanes A and B shown in the figure include a non-installed area 50n in which the power transmission unit 10 is provided from one end side to the other end side along the vertical direction of the paper in the figure, and the power transmission unit 10 is not provided. I can't. However, in the C lane and the D lane shown in the figure, the side wall portion 51 is partially missing, and there is an uninstalled area 50n in which the power transmission portion 10 is not provided. In this case, for example, it is difficult for the transport device 60 to move from one end side to the other end side along the vertical direction of the paper surface in the C lane and the D lane. Further, it is difficult for the transport device 60 to move from the B lane to the C lane, from the B lane to the D lane, from the C lane to the D lane, and the like.

Therefore, the non-contact power supply system 40 can be provided with the power supply device 80 for at least one of the plurality of types of power transmission / reception units 30. The power supply device 80 supplies alternative power, which is the same power as the power supplied from the power transmission unit 10. Further, the power supply device 80 moves following the power receiving unit 20 provided in the transport device 60 in the uninstalled area 50n of the production facility 50 in which the power transmission unit 10 is not provided, and supplies the alternative power to the power receiving unit 20. do.

As shown in FIGS. 16 to 18, the power supply device 80 can include a first supply unit 81 provided in the unmanned vehicle 80a. As shown in FIG. 16, the first supply unit 81 maintains the separation distance CL0 between the power supply unit 80t for supplying alternative power and the power reception unit 20 provided in the transport device 60 at a predetermined distance, and is an unmanned traveling vehicle. The production equipment 50 is moved by 80a. FIG. 16 shows an example of a state in which the transport device 60 is moved from the C lane to the D lane in the non-installed area 50n in which the power transmission unit 10 is not provided. As a result, the transport device 60 can move in the uninstalled area 50n of the production equipment 50 in which the power transmission unit 10 is not provided.

The first supply unit 81 is equipped with a battery, and can supply alternative power to the power receiving unit 20 of the transport device 60 by the driving power of the battery. Further, the first supply unit 81 may be supplied with drive power from another power source by a wired cable. When the transport device 60 reaches the uninstalled area 50n in which the power transmission unit 10 is not provided, the transport device 60 waits until the first supply unit 81 arrives. The first supply unit 81 can move to the non-installed area 50n based on the detection signal of a detector (for example, a proximity sensor) that detects that the transport device 60 has reached the non-installed area 50n. Further, the transfer device 60 can also request the control device that controls the transfer device 60 and the power supply device 80 to dispatch the first supply unit 81. In this case, the first supply unit 81 can move to the instructed non-installed area 50n based on the instruction by the control device.

Further, as shown in FIG. 16, the first supply unit 81 may have a form in which the power receiving unit 20 provided on the side surface portion 61 of the transport device 60 and the power feeding unit 80t face each other. Further, as shown in FIG. 17, the first supply unit 81 may have a form in which the power receiving unit 20 provided on the bottom 62 of the transport device 60 and the power feeding unit 80t face each other. Further, as shown in FIG. 18, the first supply unit 81 moves the power supply unit 80t so that the power reception unit 20 provided on the bottom 62 of the transport device 60 and the power supply unit 80t face each other. Is also good.

As shown in FIGS. 19 and 20, the power supply device 80 may also include a second supply unit 82 in which a power supply unit 80t for supplying alternative power is provided in the lower floor 55 of the production equipment 50. In this embodiment, the non-contact power feeding system 40 includes a position detecting device 40s that detects the position of the transport device 60. In the second supply unit 82, the power supply unit 80t moves the lower floor 55 of the production equipment 50 according to the position of the transfer device 60 detected by the position detection device 40s.

For the second supply unit 82, for example, a parallel link robot, a orthogonal robot, or the like can be used. As a result, the transport device 60 can move in the uninstalled area 50n of the production equipment 50 in which the power transmission unit 10 is not provided. Further, in the second supply unit 82, since the power supply unit 80t moves the lower floor 55 of the production equipment 50, the empty space of the lower floor 55 can be utilized.

As shown in FIGS. 21 to 23, the power supply device 80 may also include a third supply unit 83 that generates alternative power from the mounted battery and is mounted on the production facility 50 so that it can be collected by the transfer device 60. can. When the transfer device 60 reaches the collection position 50s, the third supply unit 83 collects the third supply unit 83. The sampling position 50s is provided at the start point of the non-installed area 50n of the production equipment 50 in which the power transmission unit 10 is not provided. FIG. 22 shows a state before the transfer device 60 collects the third supply unit 83, and FIG. 23 shows a state in which the transfer device 60 collects the third supply unit 83.

The transport device 60 moves in the non-installed area 50n while receiving alternative power from the third supply unit 83 by non-contact power supply, and when it reaches the discharge position 50e provided at the end point of the non-installed area 50n, the third supply unit 83 is moved to the third supply unit 83. discharge. As a result, the transport device 60 can move in the uninstalled area 50n of the production equipment 50 in which the power transmission unit 10 is not provided.

Since the transport device 60 consumes the battery of the third supply unit 83, it is preferable that the charging device 50c for charging the battery is provided at the collection position 50s and the discharge position 50e. As a result, it is possible to suppress a battery shortage when the transport device 60 uses the third supply unit 83.

1-4. Configuration Example of Movable Member 50m In at least one of the plurality of types of power transmission / reception units 30, at least a part of the plurality of power transmission units 10 can be provided with the production equipment 50 in the movable movable member 50m. As shown in FIG. 24, the movable member 50m moves in the uninstalled area 50n of the production equipment 50 in which the power transmission unit 10 is not provided, in accordance with the movement path of the transfer device 60.

The movable member 50m can move the production equipment 50 in the same manner as the first supply unit 81 shown in FIG. 16, for example. Further, the movable member 50m can also rotate about the one end side in the longitudinal direction of the side wall portion 51 shown in FIG. 24 as an axis. Also in this form, the transport device 60 can move in the uninstalled area 50n of the production equipment 50 in which the power transmission unit 10 is not provided.

1-5. In one of the other plurality of types of power transmission / reception units 30, the power transmission unit 10 is provided on the pillar portion 53 of the production equipment 50, and the power reception unit 20 is at least one side surface of the plurality of side surface portions 61 of the transfer device 60. The case where it is provided on the portion 61 or the upper surface portion is included. Further, in one of the plurality of types of power transmission / reception units 30, the power transmission unit 10 is provided on the ceiling portion 54 of the production equipment 50, and the power reception unit 20 is at least one of the plurality of side surface portions 61 of the transfer device 60. The case where it is provided on the side surface portion 61 or the upper surface portion is included. Further, in one of the plurality of types of power transmission / reception units 30, the power transmission unit 10 is provided in the lower floor 55 of the production equipment 50, and the power reception unit 20 is at least one of the plurality of side surface portions 61 of the transfer device 60. The case where it is provided on the side surface portion 61 or the bottom portion 62 is included. As described above, the type of the power transmission / reception unit 30 is different when at least one of the part of the production facility 50 in which the power transmission unit 10 is provided and the part of the transport device 60 in which the power reception unit 20 is provided are different.

Further, the power transmission / reception unit 30 can perform non-contact power supply by, for example, electromagnetic induction, magnetic field resonance (magnetic resonance), electric field coupling (electrostatic coupling), radio wave reception, DC resonance, etc. , Not limited. For example, in DC resonance, since a DC power supply is used instead of the AC power supply 11 shown in FIG. 8, power loss due to power conversion can be suppressed, and power transmission efficiency can be improved.

Further, the production equipment 50 includes, for example, a production equipment for a substrate product that produces a substrate product by mounting a plurality of parts on the substrate. The board product production facility is provided with at least one board production lane, and each of the board production lanes is equipped with a board-to-board working machine that performs a predetermined board-to-board work on the board. The anti-board working machine includes a solder printing machine, a solder inspection machine, a component mounting machine, a reflow furnace, a visual inspection machine, and the like.

The board production lane can also be equipped with a storage device, a replacement device, and the like. The storage device temporarily stores an article (for example, a feeder that supplies parts to the parts mounting machine) that is detachably provided on the board-to-board working machine. The switching device travels on rails provided along the board production lane and conveys the articles stored in the storage device to the board working machine. In addition, the exchange device can exchange the article mounted on the board-to-board working machine with the article stored in the storage device. Further, the switching device can also transport the article mounted on the board-to-board working machine to the storage device. In this way, the exchange device transports the article in the production facility 50 and is included in the transport device 60.

2. An example of the effect of the embodiment The non-contact power supply system 40 includes a plurality of types of power transmission / reception units 30, and the power receiving unit 20 of the plurality of types of power transmission / reception units 30 is provided in the transfer device 60. Therefore, in the non-contact power feeding system 40 in which the power receiving unit 20 is provided in the transport device 60, the power transmission efficiency can be improved as compared with the case where one type of power transmitting / receiving unit 30 is provided.

10: Power transmission unit, 10u: Power transmission unit, 13: Power transmission element,
20: Power receiving unit, 20u: Power receiving unit, 21: Power receiving element,
30: Power transmission / reception unit, 30p: Power transmission / reception part,
40: Non-contact power supply system, 40s: Position detector,
50: Production equipment, 50n: Uninstalled area, 50s: Collection position,
50e: Release position, 50c: Charging device, 50m: Movable member,
51: Side wall, 52: Floor, 53: Pillar, 54: Ceiling,
55: Underfloor, 60: Conveyor, 61: Side, 62: Bottom,
70: Power transmission efficiency adjustment unit, 70c: Imaging device, 70f: Feature unit,
80: Power supply device, 80a: Unmanned vehicle, 80t: Power supply unit,
CL0: separation distance, 81: first supply unit, 82: second supply unit,
83: Third supply department.

Claims

With multiple power transmission units that supply power,
At least one power receiving unit that receives the electric power from at least one opposing power transmitting unit in a non-contact manner.
Equipped with multiple types of power transmission / reception units
The power receiving unit of the plurality of types of the power transmitting / receiving unit is a non-contact power feeding system provided in a transport device for transporting articles in a production facility.
In one of the plurality of types of the power transmission / reception unit, the power transmission unit is provided on at least one side wall portion of the plurality of side wall portions of the production facility, and the power reception unit is provided on a plurality of side surfaces of the transfer device. The non-contact power supply system according to claim 1, which is provided on the side surface portion of at least one of the portions.
One of the plurality of types of the power transmission / reception unit according to claim 1 or 2, wherein the power transmission unit is provided on the floor of the production facility and the power reception unit is provided on the bottom of the transfer device. The non-contact power supply system described.
The power transmission unit is provided in a plurality of power transmission units in which at least four power transmission elements are arranged in a cross shape.
When the plurality of power transmission units are arranged on the floor, the plurality of power transmission elements are arranged in a grid pattern.
When the power receiving unit faces the power transmission unit of one of the power transmission units, the power receiving unit is arranged at a position where the plurality of power receiving elements face the power transmission elements of the power transmission unit. The non-contact power transmission system according to claim 3 provided in the above.
The non. Contact power supply system.
At least one of the power transmission unit and the power reception unit is of the power transmission unit so that the power transmission efficiency between the power transmission unit and the power reception unit, which fluctuates with the movement of the transfer device, becomes equal to or higher than a predetermined efficiency. The non-contact power supply system according to any one of claims 1 to 5, further comprising a power transmission efficiency adjusting unit that adjusts at least one of the power transmission direction and the power receiving direction of the power receiving unit.
The power transmission efficiency adjusting unit uses an imaging device provided in at least one of the power transmission unit and the power receiving unit to image a feature unit provided on the other party, and the position of the feature unit in the captured image is the power transmission. The non-contact power supply system according to claim 6, wherein at least one of the power transmission direction and the power reception direction is adjusted so as to coincide with a predetermined position imaged when the direction and the power reception direction match.
The power transmission efficiency adjusting unit detects the received voltage of the power received by the power receiving unit, and the detected voltage is a predetermined voltage detected when the power transmission direction and the power receiving direction coincide with each other. The non-contact power supply system according to claim 6 or 7, wherein at least one of the power transmission direction and the power reception direction is adjusted so as to reach a value.
Any one of claims 6 to 8, wherein at least a part of the plurality of power transmission units is provided on at least one of a side wall portion, a pillar portion, a ceiling portion, and a lower floor portion of the production facility. The non-contact power supply system described in the section.
It is provided with a power supply device capable of supplying alternative power that is equivalent to the power supplied from the power transmission unit.
A claim that the power supply device moves following the power receiving unit provided in the transport device to supply the alternative power to the power receiving unit in an uninstalled area of the production facility in which the power transmission unit is not provided. The non-contact power supply system according to any one of items 1 to 9.
The power supply device includes a first supply unit provided in an unmanned vehicle.
The first supply unit moves the production equipment by the unmanned traveling vehicle while maintaining a predetermined distance between the power supply unit that supplies the alternative power and the power receiving unit provided in the transfer device. The non-contact power supply system according to claim 10.
A position detection device for detecting the position of the transfer device is provided.
The power supply device includes a second supply unit in which a power supply unit for supplying the alternative power is provided under the floor of the production facility.
The non-contact according to claim 10 or 11, wherein the second supply unit moves the power supply unit under the floor of the production facility according to the position of the transfer device detected by the position detection device. Power supply system.
The power supply device includes a third supply unit that generates the alternative power from an on-board battery and mounts the alternative power on the production facility so that it can be collected by the transfer device.
When the transport device reaches the sampling position provided at the start point of the non-installed area, the third supply unit collects the third supply unit, and receives the alternative power from the third supply unit by non-contact power supply while receiving the alternative power from the non-installed area. The non-contact power supply system according to any one of claims 10 to 12, wherein the third supply unit is discharged when the third supply unit is reached at the discharge position provided at the end point of the non-installed area.
The non-contact power supply system according to claim 13, wherein a charging device for charging the battery is provided at the collection position and the discharge position.
At least a part of the plurality of power transmission units is provided on a movable member that can move the production equipment.
The non-contact according to any one of claims 1 to 14, wherein the movable member moves in a non-installed area of the production facility in which the power transmission unit is not provided, in accordance with a movement path of the transfer device. Power supply system.