JP2000358301A - Noncontact load-dispatching equipment - Google Patents

Noncontact load-dispatching equipment

Info

Publication number
JP2000358301A
JP2000358301A JP11164861A JP16486199A JP2000358301A JP 2000358301 A JP2000358301 A JP 2000358301A JP 11164861 A JP11164861 A JP 11164861A JP 16486199 A JP16486199 A JP 16486199A JP 2000358301 A JP2000358301 A JP 2000358301A
Authority
JP
Japan
Prior art keywords
power supply
supply line
support
conductor
pickup coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP11164861A
Other languages
Japanese (ja)
Other versions
JP3811912B2 (en
Inventor
Shohei Furukawa
正平 古川
Original Assignee
Hitachi Kiden Kogyo Ltd
日立機電工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Kiden Kogyo Ltd, 日立機電工業株式会社 filed Critical Hitachi Kiden Kogyo Ltd
Priority to JP16486199A priority Critical patent/JP3811912B2/en
Publication of JP2000358301A publication Critical patent/JP2000358301A/en
Application granted granted Critical
Publication of JP3811912B2 publication Critical patent/JP3811912B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To stably supply power which extends over the entire length of a rail, without being affected by the effect of the state of the periphery of a pickup coil. SOLUTION: This noncontact load-dispatching equipment is composed of a feeder 5 laid along a traveling rail R and making a high-frequency current flow and a receiving device receiving power supply by electromagnetic induction through a pickup coil 7 installed on the side of a traveling truck 6. A support member 4 for the feeder 5 is mounted on a feeder support member mounting seat 2 via a conductor 3 laid extending over the overall length of the feeder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-contact power supply system using electromagnetic induction, and more particularly to a non-contact power supply system capable of stably supplying power without being affected by the periphery of a pickup coil. is there.

[0002]

2. Description of the Related Art For example, in a semiconductor manufacturing plant, etc., an automatic guided vehicle is used to transport parts and the like in a clean environment. However, power is not supplied to a traveling vehicle of the automatic guided vehicle without generating dust. In order to do so, power is supplied wirelessly. Conventional non-contact power supply equipment lays a power supply line along a traveling rail set in advance, connects a high-frequency power supply to the power supply line, allows a high-frequency current to flow, and supplies an electromagnetic force via a pickup coil provided on a traveling vehicle. Electric power is supplied by induction. The power supply line is supported at predetermined intervals along a length direction of the power supply line on a structural material of a building or a rail by a support member (bracket) made of an insulator. It is inserted into the groove of the core in a non-contact state.

[0003]

However, in the conventional non-contact power supply equipment, if the space between the core and the structural material (for example, aluminum, iron, etc.) cannot be sufficiently secured due to the limitations of the manufacturing equipment and the building, the pick-up coil is required. When passing over the structural material,
Since the self-inductance of the coil is greatly reduced and the power supply capability is reduced, there has been a problem that a load trips or a power receiving device having an unnecessarily large capacity is required. Also, in the conventional contactless power supply equipment, the pickup coil changes its self-inductance, mutual inductance, etc., depending on the conductor and magnetic material around the core.
There is a problem that the power supply efficiency changes.

The present invention has been made in view of the above-mentioned problems of the conventional non-contact power supply equipment, and has provided a non-contact power supply capable of supplying power stably over the entire length of the rail without being affected by the condition around the pickup coil. The purpose is to provide equipment.

[0005]

In order to achieve the above object, a non-contact power supply system according to the first aspect of the present invention is provided with a power supply line laid along a traveling rail for flowing a high-frequency current, and a pickup provided on a traveling vehicle side. In a non-contact power supply equipment comprising a power receiving device receiving power supply by electromagnetic induction through a coil, a power supply line support member mounting seat is provided via a conductor laid over the entire length of the power supply line. It is characterized by being attached to.

[0006] In this non-contact power supply equipment, since the conductor laid over the entire length of the power supply line is always present on the traveling path at a constant distance, the core is cut off from a structural material such as a building, so that the pickup coil is provided. Since the self-inductance is kept constant, the power supply capacity can be stabilized, and power can be supplied stably over the entire length of the rail without being affected by the surrounding conditions.

[0007] To achieve the same object, the non-contact power supply equipment of the second invention is laid along a traveling rail,
In a non-contact power supply system including a power supply line through which a high-frequency current flows and a power receiving device that receives power supply by electromagnetic induction via a pickup coil provided on a traveling vehicle, a yoke portion of a core around which a pickup coil is wound Is covered with a conductor via an insulator. here,
“Yoke portion” refers to the outer peripheral portion of the core that does not include the opening.

[0008] In this non-contact power supply equipment, since the yoke of the core is covered with a conductor via an insulator, the core is cut off from the surroundings and the self-inductance of the pickup coil is kept constant. Thus, the power supply capability can be stabilized, and the power can be stably supplied over the entire length of the rail without being affected by the surrounding conditions.

In each of the first and second non-contact power supply facilities of the present invention, the support member of the power supply line may be formed so as to continuously support the bottom of the power supply line over the entire length.

Thus, the power supply line does not hang down over its entire length, so that the power receiving characteristics of the pickup coil do not fluctuate, and more stable power supply becomes possible.

Further, the conductor may be formed of an aluminum thin plate or an aluminum foil tape.

Thus, the construction can be performed easily and the weight of the non-contact power supply equipment can be reduced.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a contactless power supply system according to an embodiment of the present invention.

[0014] The non-contact power supply equipment is shown in Figs.
As shown in (C), the traveling rail R is disposed directly on the structural member 1 of the building or on the feeder line support member mounting seat 2 disposed on the structural member 1 of the building. The support member 4 of the power supply line 5 is installed on the electric wire support member mounting seat 2 via the good conductor 3 made of aluminum, and the power supply line 5 is supported by the support member 4 of the power supply line 5. 5 is laid along the traveling rail R. A high-frequency power supply device (not shown) is connected to the power supply line 5 to supply a high-frequency current to the traveling vehicle 6 traveling along the traveling rail R. Power is supplied by electromagnetic induction via a “pickup”.

The power supply line 5 is disposed along the running rail R, and the bottom of the power supply line 5 is connected to the power supply line 5 by the support member 4 of the insulating power supply line 5 over the entire length of the power supply line 5. 5 are continuously supported so as not to hang down. The support member 4 of the power supply line 5 is made of an insulating material such as a synthetic resin and is installed on the power supply line support member mounting seat 2 via the conductor 3. A mounting bracket 41 having a T-shaped cross-section, which is disposed and mounted thereon and has a predetermined height, and a feed-line support member 42 having a gutter-shaped cross-section so as to support the lower portion of the feed line 5 over its entire length. It is composed of

A notch hole 43 is formed in the mounting bracket 41 at a position near a connecting portion with the gutter-type feeder line support member 42, and the gutter shape is formed by an insulator lock 44 through which the notch hole 43 is inserted. And the power supply line 5 whose bottom is supported by the power supply line support material 42,
The power supply line is prevented from floating above the power supply line support member 42 or sagging. For this reason, the notch holes 43 are formed at predetermined intervals with respect to the entire length of the support member 4 of the power supply line 5. As a result, the feeding line 5 is provided at the center of the groove of the core 71 of the pickup 7 mounted on the traveling vehicle 6.
Are accurately and firmly supported.

The conductor 3 is made of a thin aluminum plate or aluminum foil tape having a thickness of about 1 to 2 mm, and is laid over the entire length of the support member 4 of the power supply line 5. As shown in FIG. 1 (C), it is desirable that the width 3 is substantially equal to or larger than the core 71 of the pickup 7.

Next, the pickup 7 will be described.
As shown in FIG. 2, the pickup 7 wraps the outer periphery of the yoke portion (outer peripheral portion not including the opening) of the core 71 made of E-shaped ferrite via an insulator 70 made of, for example, epoxy glass tape. It is covered with an aluminum cover 72 having a small electric resistance. Further, the coil 74 is wound around the center leg of the core 71, and the outer peripheral surface of the coil 74 is molded with an epoxy resin 73 to be adhered and held integrally. The aluminum cover 72 is made of an insulating material by alumite treatment on the surface, and is hardened to be hardly damaged.

By the way, the power receiving circuit of the non-contact power supply is shown in FIG.
4, when the power is amplified and received by the self-inductance L of the coil 74 and the resonance circuit of the resonance capacitor C, the space for mounting the power supply line 5 and the coil 74 is narrow. A state in which a structure that changes the self-inductance of the coil 74 is present in the vicinity, for example, as shown in FIG.
In a state where the magnetic material or the conductors K2 and K3 are provided outside, the self-inductance of the coil 74 fluctuates by several percent, the resonance point is shifted, and the power supply efficiency is deteriorated. Further, when the core 71 is attached in contact with a high-resistance conductor such as iron or stainless steel, the loss increases due to eddy current due to the magnetic flux leaking from the core 71, and the efficiency of power supply is deteriorated.

On the other hand, as in the present embodiment, the pickup 7 is covered with the aluminum cover 72 by covering the outer periphery of the yoke portion of the core 71 with the insulator 70 via the insulator 70. In addition to reducing the generated loss, even when the core 71 cracks, the core 71 does not fall off and is shielded by the aluminum cover 72 so that the self-inductance of the coil 74 does not fluctuate, so that power can be supplied efficiently. Further, even when the magnetic head is mounted between narrow structures, the influence of the conductor and the magnetic body of the mounting part can be reduced.

On the other hand, when power is supplied to a moving body such as a traveling vehicle by electromagnetic induction, the power supply line 5 and the pickup 7 form a magnetic path through an air gap as shown in the drawing, and one of the power supply lines is fixed. And the other traveling vehicle is the moving side. Conventionally, when supplying power for a long stroke, as shown in FIG. 7, when passing through a support portion provided by brackets 40 arranged at predetermined intervals along the power supply line 5, a magnetic path is not provided at this support portion position. Since it has a large air gap and the primary and secondary coupling is poor, the secondary side increases the power by resonance to increase the power supply efficiency.

FIG. 4 shows a power receiving circuit on the moving body side. A self-inductance L1 of the coil 74 of the pickup 7 and a resonance capacitor C1 arranged in the rectification unit form a resonance circuit. are Zohaba to Q 2 times. In this case, Q is a number indicating the resonance.

In FIG. 5, when the excitation frequency is f r1 , the self-inductance of the coil is L, and the resonance capacitor C is selected such that f r1 = 1 / (2π (LC) 1/2 ) [Hz]. The characteristics are as shown in FIG. 5, and the load is used at a voltage A or higher required by the load.

However, as shown in FIG.
If there is an aluminum plate K1 or the like on the opening side of 1, the self-inductance of the coil changes greatly due to the effect of eddy current due to magnetic flux, and the characteristics change as shown by the curve on the right side of FIG.
The required output cannot be obtained. In order to solve this, it is necessary to make the excitation frequency f or the resonance capacitor C variable, or not to change the self-inductance L of the coil.

In this embodiment, as shown in FIG. 1, the core 7 of the pickup 7 is
The conductor 3 is laid over the entire length of the travel path so that the distance from the conductor 1 is constant.
Is always cut off from the structural material and the like, whereby the self-inductance L of the coil 74 is kept constant, and the characteristics become constant. In addition, it becomes possible to excite power receiving devices having various self-inductances with a power supply having a constant frequency.

Although the embodiment of the present invention has been described above, the conductor 3 having a smooth surface without holes or irregularities is suitable.

[0027]

According to the wireless power supply system of the first invention,
Since the conductor laid over the entire length of the feeder line is always present on the traveling path at a constant distance, the core is cut off from structural materials such as buildings, and the self-inductance of the pickup coil is kept constant. As a result, the power supply capacity can be stabilized, and power can be stably supplied over the entire length of the rail without being affected by the surrounding conditions. As a result, a power receiving device having an unnecessarily large capacity is required. Therefore, the power receiving device can be downsized.

According to the second aspect of the present invention, since the yoke of the core is covered with the conductor, the core is cut off from the surroundings and the self-inductance of the pickup coil is kept constant. As a result, the power supply capacity can be stabilized, and power can be supplied stably over the entire length of the rail without being affected by the surrounding conditions.

The bottom of the feed line is continuously supported by the support member of the feed line over the entire length, thereby preventing the feed line from sagging, stabilizing the power receiving characteristics of the pickup coil, and further stabilizing power consumption. It becomes possible to supply.

Further, by forming the conductor with a thin aluminum plate or aluminum foil tape, the construction can be performed easily and the weight of the non-contact power supply equipment can be reduced.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a non-contact power supply equipment of the present invention,
(A) is a partial front view, (B) is a partial perspective view omitting the traveling trolley side, and (C) is a longitudinal side view.

2A and 2B show a pickup coil used in the non-contact power supply equipment, FIG. 2A is a vertical cross-sectional side view, FIG.
(C) is a bottom view.

FIG. 3 is a block diagram showing a power receiving circuit on the traveling vehicle side.

FIG. 4 is a circuit diagram showing the power receiving circuit.

FIG. 5 is a graph showing a change in a characteristic of an output of a pickup coil.

FIG. 6 shows test results of the contactless power supply equipment of the present invention;
(A) is a graph showing a change in inductance, and (B) is an explanatory diagram showing test conditions.

FIG. 7 is a partial front view showing a conventional non-contact power supply facility.

[Explanation of symbols]

 R running rail 1 building structural material 2 feeder line support member mounting seat 3 conductor 4 support member 41 mounting bracket 42 feeder line support material 5 feeder line 6 traveling trolley 7 pickup coil 70 insulator 71 core 72 cover 73 epoxy resin 74 coil

Claims (4)

[Claims]
1. A non-contact power supply system comprising: a power supply line laid along a traveling rail, through which a high-frequency current flows, and a power receiving device that receives power supply by electromagnetic induction via a pickup coil provided on a traveling vehicle. Non-contact power supply equipment, wherein the power supply line support member is attached to a power supply line support member mounting seat via a conductor laid over the entire length of the power supply line.
2. A non-contact power supply system comprising: a power supply line laid along a traveling rail, through which a high-frequency current flows, and a power receiving device receiving power supply by electromagnetic induction via a pickup coil provided on the traveling vehicle. A non-contact power supply facility, wherein a yoke portion of a core around which a pickup coil is wound is covered with a conductor via an insulator.
3. The contactless power supply equipment according to claim 1, wherein the support member for the power supply line is formed so as to continuously support the bottom of the power supply line over the entire length.
4. The non-contact power supply equipment according to claim 1, wherein the conductor is formed of an aluminum thin plate or an aluminum foil tape.
JP16486199A 1999-06-11 1999-06-11 Non-contact power supply equipment Expired - Fee Related JP3811912B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16486199A JP3811912B2 (en) 1999-06-11 1999-06-11 Non-contact power supply equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16486199A JP3811912B2 (en) 1999-06-11 1999-06-11 Non-contact power supply equipment

Publications (2)

Publication Number Publication Date
JP2000358301A true JP2000358301A (en) 2000-12-26
JP3811912B2 JP3811912B2 (en) 2006-08-23

Family

ID=15801325

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16486199A Expired - Fee Related JP3811912B2 (en) 1999-06-11 1999-06-11 Non-contact power supply equipment

Country Status (1)

Country Link
JP (1) JP3811912B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007303707A (en) * 2006-05-10 2007-11-22 Tokyo Rika Kikai Kk Dryer
JP2007326064A (en) * 2006-06-09 2007-12-20 Hitachi Plant Technologies Ltd Paste applicator
WO2016171025A1 (en) * 2015-04-21 2016-10-27 オリンパス株式会社 Energy treatment tool
CN106241409A (en) * 2016-08-31 2016-12-21 孟喆 Semi-automatic harbour high-speed overload track and terminal loading and unloading system layout

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6703894B2 (en) * 2016-05-25 2020-06-03 株式会社日立製作所 Non-contact power supply device and elevator using the same
KR101975931B1 (en) * 2017-03-03 2019-05-07 경성대학교 산학협력단 System for supplying a electric power to a rail guided vehicle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007303707A (en) * 2006-05-10 2007-11-22 Tokyo Rika Kikai Kk Dryer
JP2007326064A (en) * 2006-06-09 2007-12-20 Hitachi Plant Technologies Ltd Paste applicator
WO2016171025A1 (en) * 2015-04-21 2016-10-27 オリンパス株式会社 Energy treatment tool
JPWO2016171025A1 (en) * 2015-04-21 2017-05-18 オリンパス株式会社 Energy treatment tool
US10441309B2 (en) 2015-04-21 2019-10-15 Olympus Corporation Energy treatment instrument
CN106241409A (en) * 2016-08-31 2016-12-21 孟喆 Semi-automatic harbour high-speed overload track and terminal loading and unloading system layout

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