JPH09298801A - Contactless feeding facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to extend a moving path of a moving body, by attaching a yoke wound with a coil to the moving body in such a manner that the yoke is able to face the conductors of both a main circuit and an auxiliary circuit. SOLUTION: When a moving body 1 makes connection from one main circuit A to another main circuit B, even though feeding from the main circuit A is cut off, the power is supplied from an auxiliary circuit C and making connection to another main circuit B is possible by continuing the feeding state. Therefore, making connection between both the main circuits A and B becomes possible by receiving feeding from the auxiliary circuit C and continuing the feeding state. Thus, moving path can be extended extremely easily by adding the main circuit arbitrarily while interposing the auxiliary circuit. Also, the above can be realized easily even to a complicated moving path having many branch circuits.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contactless power supply facility for contactlessly supplying power to a moving body.

[0002]

2. Description of the Related Art A non-contact power feeding facility for non-contactly feeding power to a moving body such as a self-propelled carrier is disclosed in, for example, Japanese Patent Laid-Open No. 5-2.
It has been conventionally developed as shown in JP 07603.

The outline thereof will be explained with reference to FIG. 7. Wheels 3 which are driven to rotate by a motor 2 are attached to a moving body 1 such as a self-propelled carriage, and the floor 3 is guided by a guide (not shown). However, it is designed to travel along a predetermined movement route.

On the floor 4 side, a conductor 5 in which copper stranded wire or the like is coated with an insulating material is laid in a groove (not shown) provided along the moving path of the moving body 1, and a high-frequency current is applied to the conductor 5. Can be washed away.

On the moving body 1 side, a ferromagnetic yoke 6 having a coil 7 wound in a lateral direction substantially perpendicular to the conductor 5 is arranged above the conductor 5 so as to face it.
Due to the magnetic field generated by the high frequency current flowing through the conductor 5,
An alternating electromotive force is induced in the coil 7.

A converter 8 for converting the AC electromotive force generated in the coil 7 into a predetermined DC voltage is provided in the moving body 1 and rotates the motor 2 via the controller 9.

[0007]

However, in such a conventional non-contact power feeding facility, as shown in FIG. 8, the conductor 5 through which a high frequency current is passed is constructed as a circuit closed to the AC power source 10. For example, even if an attempt is made to extend the movement path of the moving body 1 by adding a conductor 5'shown by a chain double-dashed line to the existing conductor 5, the inductance is changed when the conduction state of the conductor 5 is switched to the conduction state of the conductor 5 '. Therefore, it is technically difficult to modify the AC power supply such as adding a function capable of matching the inductance to the AC power supply.

Further, as shown in FIG. 9, even if the circuit of the conductor 5 is separately provided and the moving path of the moving body 1 is expanded, the power supply is cut off when connecting between the circuits,
There was a problem that transfer was not performed properly.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a non-contact power feeding facility that can easily expand the moving route of a moving body.

[0010]

SUMMARY OF THE INVENTION According to the present invention, a plurality of main circuits and a connecting auxiliary circuit between the main circuits are constituted by conductors to which a high-frequency current is passed along a moving path of a moving body, and a coil is formed. The present invention relates to a non-contact power supply facility, wherein a wound yoke is provided on the moving body so as to face any conductor of the main circuit and the auxiliary circuit.

The yoke provided on the movable body may be configured such that the conductor of the main circuit faces one side of the coil and the conductor of the auxiliary circuit faces the other side of the coil, or
The moving body may be separately provided with a yoke facing the conductor of the main circuit and a yoke facing the conductor of the auxiliary circuit.

With this configuration, when the moving body transfers from one main circuit to another main circuit, even if the power supply from one main circuit is cut off, the power is supplied from the auxiliary circuit to keep the power supply state. It is possible to transfer to the other main circuit while continuing.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an example of a mode for carrying out the present invention, and the parts denoted by the same reference numerals as those in FIG. 7 represent the same parts.

As shown in FIG. 1, in the present embodiment, the two main circuits A and B are formed by the conductor 5 to which a high frequency current is passed.
And a transfer auxiliary circuit C between the main circuits A and B, and the main circuits A and B are configured to move along the moving path of the moving body 1 (in the example shown in the figure, set in the shape of "8"). Is arranged along the inner side of the auxiliary circuit C and the auxiliary circuit C includes main circuits A and B.
It is arranged along the outside of the travel route at the connecting portion between.

Further, as shown in FIG. 2, the conductors 5 forming the main circuits A and B and the auxiliary circuit C are all installed above the floor surface 4 like a power transmission line of a train and travel on a moving route. On the upper side of the moving body 1, a ferromagnetic yoke 12 having a coil 11 wound in the vertical direction is connected to the conductors 5 of the main circuits A and B on one side (left side in FIG. 2) sandwiching the coil 11. Auxiliary circuit C facing each other and on the other side (right side in FIG. 2)
It is provided so as to face the conductor 5.

Further, the coil 11 in the yoke 12
At the upper and lower ends, projecting portions that project outward in the width direction of the moving body 1 (left-right direction in FIG. 2) and surround the conductors 5 of the main circuits A and B and the conductor 5 of the auxiliary circuit C from above and below, respectively. 13 is provided so as to project, and effectively closes the magnetic path to the magnetic field generated when a high-frequency current is passed through the conductor 5 of the main circuits A and B and the conductor 5 of the auxiliary circuit C, and links the coil 11 with the link. The magnetic flux can be increased as much as possible.

Here, the high frequency current flowing through the conductors 5 on the main circuits A and B side and the high frequency current flowing through the conductor 5 on the auxiliary circuit C side are set to have opposite phases, and the yoke 12 of the yoke 12 is arranged. Needless to say, the electromotive forces of the coil 11 are not canceled even if the conductors 5 of the main circuits A and B and the conductor 5 of the auxiliary circuit C face each other at the same time.

Thus, in this way, when the moving body 1 transfers from one main circuit A to the other main circuit B, even if the power supplied from one main circuit A is cut off, By receiving power supply from the auxiliary circuit C, it is possible to transfer to the other main circuit B while continuing the power supply state.

Therefore, according to the above embodiment, the auxiliary circuit C
It is possible to connect between the two main circuits A and B while receiving the power supply from the main circuit and continuing the power supply state. Therefore, by adding additional main circuits while interposing similar auxiliary circuits, the movement path can be extremely easy. Can be extended to
Further, it is possible to cope with a complicated moving route having many branch points very easily.

FIG. 3 shows another embodiment of the present invention.
The separation distance between the conductor 5 of the main circuits A and B and the conductor 5 of the auxiliary circuit C is set to be larger than the width dimension of the moving body 1 and
The arrangement height of the conductor 5 of B and the conductor 5 of the auxiliary circuit C is set to be lower than that of the moving body 1, and the width direction of the moving body 1 (see FIG.
The yoke 12 facing the conductor 5 of the main circuits A and B and the yoke 12 facing the conductor 5 of the auxiliary circuit C are separately provided on both sides in the left-right direction).

Even in this case, as in the case of the above-mentioned embodiment, it is possible to transfer between the main circuits A and B while receiving the power from the auxiliary circuit C and continuing the power supply state.

Further, in this case, two converters 8 (see FIG. 7) are provided corresponding to the coils 11 of both yokes 12, and both coils 11 are connected after each converter 8. If so, the conductor 5 on the main circuit A, B side
It is not necessary to reverse the phase of the high frequency current flowing through the conductor and the high frequency current flowing through the conductor 5 on the auxiliary circuit C side.

Further, in any of the above-described embodiments, as shown in FIG. 4, the conductor 5 arranged along the moving path from the AC power source 10 is folded back at a required position and is again moved along the moving path. It is possible to configure the main circuits A and B or the auxiliary circuit C so that the reciprocating path is formed by returning to the AC power source 10 so that the forward path and the return path run in parallel vertically. When the B or the auxiliary circuit C is configured, as shown in FIGS. 5 and 6, the coils 11 are wound in two upper and lower stages, and the projecting portions 13 are projected toward the conductor 5 at the upper and lower ends of each coil 11. York 12
By adopting, it is possible to carry out non-contact power supply with higher power.

The contactless power supply equipment of the present invention is not limited to the above-described embodiment, and the moving body does not necessarily have to run horizontally on the floor surface, for example, in the vertical direction. Needless to say, it may be moved up and down, the arrangement position of the yoke with respect to the moving body is not limited to the illustrated example, and various modifications may be made without departing from the scope of the present invention.

[0026]

As described above, according to the non-contact power feeding equipment of the present invention, when a moving body transfers from one main circuit to another, the power feeding from one main circuit is cut off. Also,
By receiving power from the auxiliary circuit, it is possible to transfer to the other main circuit while continuing the power supply state,
By arbitrarily adding a main circuit while interposing an auxiliary circuit, the movement route can be expanded very easily, and a complicated movement route with many branch points can be coped with very easily. It has an excellent effect.

[Brief description of drawings]

FIG. 1 is a plan view illustrating an example of an embodiment of the present invention.

FIG. 2 is a front view of the moving body shown in FIG.

FIG. 3 is a front view showing another example of the embodiment for carrying out the present invention.

FIG. 4 is a perspective view showing another configuration example of a main circuit or an auxiliary circuit made of a conductor.

5 is a front view showing an example of a yoke corresponding to the conductor of FIG.

FIG. 6 is a front view showing another example of a yoke corresponding to the conductor of FIG.

FIG. 7 is a side view showing an outline of a structure of a moving body in a conventional example.

FIG. 8 is a plan view showing an example of means for expanding a movement route in a conventional example.

FIG. 9 is a plan view showing another example of means for expanding the movement route in the conventional example.

[Explanation of symbols]

 1 moving body 5 conductor 11 coil 12 yoke A main circuit B main circuit C auxiliary circuit

Claims (3)

[Claims] 1. A plurality of main circuits and a transfer auxiliary circuit between the main circuits are configured by a conductor to which a high-frequency current is passed along a moving path of a moving body, and a yoke around which a coil is wound is provided in the main circuit and the yoke. A non-contact power supply facility provided on the moving body so as to face any conductor of the auxiliary circuit. 2. The yoke of the movable body is arranged such that the conductor of the main circuit faces one side of the coil and the conductor of the auxiliary circuit faces the other side of the coil. The non-contact power supply equipment described in. 3. The contactless power supply equipment according to claim 1, wherein a yoke facing the conductor of the main circuit and a yoke facing the conductor of the auxiliary circuit are separately provided in the moving body.