JP2013115890A - Non-contact power supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To more simply regulate output power without needing any space and any cost in a non-contact power supply device.SOLUTION: In the non-contact power supply device, a pickup part 10 is provided with a coupling core 14, and an end face core 15 coupled to the end face of the coupling core 14. The coupling core 14 arranges coils on only the inner peripheral face and the outer peripheral face of a substantially square tube bobbin which is externally inserted in a core of the pickup part 10, and has connection parts on both the ends of the coils of the inner peripheral face and the outer peripheral face. The end face core 15 arranges coils on the inner face peripheral face and the outer peripheral face of the bobbin and one side face, and has second connection parts fitted to the connection parts on one end side of the coils arranged on the inner peripheral face and the outer peripheral face. By the composition, the non-contact power supply device can more simply regulate the output power without needing any space and any cost.

Description

  The present invention relates to a non-contact power supply apparatus that supplies driving power to a mobile device such as a transport vehicle in a non-contact manner.

  Conventionally, a non-contact power feeding device has been adopted for power feeding to a transport vehicle or the like in a clean room so as not to generate dust. A schematic configuration of such a non-contact power feeding apparatus will be described with reference to FIG.

  The non-contact power supply device 20 includes a power supply line 21 laid on a ceiling surface or the like in a loop shape along the travel route of the transport vehicle, and a power supply device that supplies a high-frequency current to the power supply line 21. A plurality of power supply lines 21 are connected and used in accordance with the length and shape of the travel route. The non-contact power supply apparatus 20 includes a pair of pickup units 22 that receive power with the power supply line 21 sandwiched from above and below. An induction current is generated in the pickup unit 22 by a high-frequency current flowing through the power supply line 21, and a constant voltage power supply 23 and an inverter The motor is converted into electric power through the motor to drive the motor of the transport vehicle.

  The pickup unit 22 surrounds the power supply line 21 along the circumferential direction and has a substantially C-shaped ferrite core 22a having an opening groove 24, a rectangular tube-shaped bobbin 22b extrapolated to the ferrite core 22a, and a bobbin 22b. And a coil 22c to be wound. With this configuration, in the contactless power supply device 20, most of the magnetic flux generated around the power supply line 21 passes through the core 22a, and the induced electromotive force induced in the coil 22c is increased.

  By the way, the structure of the coil element which can be assembled by a simple operation | work, without the operation | work which winds an electric wire in the coil element with comparatively few winding | wrapping number of windings is disclosed (for example, refer patent document 1). A structure of a pickup coil for non-contact power feeding in which a plurality of flat cores are arranged and a coil is wound around the core is also disclosed (see, for example, Patent Document 2).

Japanese Utility Model Publication No. 05-41122 JP 2010-172084 A

  When such a non-contact power supply device 20 is used to supply power from a power supply line 21 connected to a high-frequency power source to a load such as a mobile device via a pickup unit 22, an output is output in accordance with the type of load used by the user. The power needs to be adjusted. In this case, for example, the number of windings of the coil 22c wound around the bobbin 22b of the pickup unit 22 is increased, the core 22a is enlarged, or a plurality of pickup units 22 are connected to the wires as shown in FIG. A method such as arranging them side by side along the extending direction of 21 is adopted. However, any of these methods has a problem in that it has a dedicated design, requires cost, and requires a space for arranging the non-contact power feeding device 20.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a non-contact power feeding apparatus that can adjust output power more easily without requiring space and cost.

  In order to achieve the above object, the present invention provides a non-contact power feeding apparatus that includes a pickup unit that is inductively coupled to a power supply line through which a high-frequency current flows, and that supplies power to a load by an induced electromotive force induced in the pickup unit. The portion includes a connecting core and an end surface core connected to the end surface of the connecting core, and the connecting core includes an inner peripheral surface of a substantially rectangular tube-shaped bobbin that is externally inserted into the core of the pickup unit, and The coil is disposed only on the outer peripheral surface, and has coupling portions at both ends of the inner peripheral surface and the outer peripheral surface coil. The core for the end surface includes the coil on the inner peripheral surface, the outer peripheral surface, and one side surface of the bobbin. It has a 2nd coupling part which is arranged and fits with the above-mentioned coupling part on the one end side of the coil arranged on the inner peripheral surface and the outer peripheral surface.

  In the non-contact power feeding device, an end face plate attached to the end face of the connecting core via the coupling portion is further provided, and the end face plate has an inner peripheral surface coil disposed on the connecting core. And it is preferable that the coil which connects the coil of an outer peripheral surface is arrange | positioned.

  According to the non-contact power feeding device according to the present invention, the end face core in which the coil is arranged on the inner peripheral face, the outer peripheral face, and one side face is provided on the end face of the connecting core in which the coil is provided only on the inner peripheral face and the outer peripheral face. Can be linked. For this reason, output power can be adjusted more easily without requiring space and cost.

It is a schematic block diagram of the non-contact electric power feeder which concerns on Embodiment 1 of this invention. (A) The front view of the pick-up part provided with the core for connection, (b) The side view of the pick-up part, (c) The top view of the pick-up part. (A) The front view of the pick-up part provided with the core for end surfaces, (b) The side view of the pick-up part, (c) The top view of the pick-up part. (A) Side view before connection of pickup unit with connecting core and pickup unit with end surface core, (b) After connection of pickup unit with connecting core and pickup unit with end surface core FIG. (A) The front view before the coupling | bonding core and end surface plate with which the non-contact electric power supply which concerns on Embodiment 2 of this invention is combined, (a) The coupling | bonding of the connecting core and end plate with which a non-contact electric power supply is equipped It is a rear elevation view. (A) Side view of end face plate, (b) Front view of end face plate, (c) Top view of end face plate, (d) Front view of other end face plate, (e) End face plate It is a side view, (f) It is a top view of the same end surface plate. (A) The side view before the coupling | bonding of the pick-up part provided with the core for connection, and the plate for end surfaces, (b) The side view after the coupling | bonding of the pick-up part provided with the core for connection, and the plate for end surfaces. (A) A perspective view of a conventional non-contact power supply device, (b) a perspective view of a pickup portion provided in the non-contact power supply device, (c) and (d) a side view of the pickup portion.

  A non-contact power feeding apparatus according to Embodiment 1 of the present invention will be described with reference to the drawings. As shown in FIG. 1, the non-contact power supply device 1 (hereinafter referred to as a power supply device) supplies a power supply line (trolley wire) 2 laid in a loop along the power supply path and a high-frequency current to the power supply line 2. The power supply device 3 to be operated and a transport vehicle 4 as a load are provided. The power supply device 1 is a device that supplies electric power to a mobile device such as a transport vehicle 4 used in a factory without contact.

  The feed line 2 includes, for example, a cylindrical inner tube portion, a cylindrical outer tube portion arranged outside the inner tube portion, and a connecting portion that connects the inner tube portion and the outer tube portion so as to be concentric with each other. However, a conductor integrally formed by bending a metal plate is covered with a rectangular tubular insulator. The power supply line 2 is wired in pairs according to the length and shape of the power supply path, and a plurality of power supply lines 2 are connected by a connecting member.

  The power supply device 3 is connected to a commercial power supply and generates a magnetic flux around the power supply line 2 by supplying an alternating high-frequency current to the power supply line 2.

  The power feeding device 1 has a pickup unit 10 disposed close to the power feeding line 2, and when the pickup unit 10 crosses the magnetic field lines of the magnetic field generated around the power feeding line 2 by the high-frequency current flowing through the power feeding line 2. An induced current is generated in the pickup unit 10. In the power feeding device 1, the transport vehicle 4 is caused to travel using the voltage received by the pickup unit 10 as drive power.

  Next, the structure of the pickup unit 10 of the power supply apparatus 1 will be described with reference to FIGS. The pickup unit 10 includes a substantially cylindrical core 11 that surrounds the power supply line 2 in the circumferential direction, a rectangular cylindrical bobbin 12 that is extrapolated to the core 11, and a coil that has a winding attached to the bobbin 12. doing. The core 11 is provided with an opening groove 11a through which at least the power supply line 2 can pass in the radial direction along the extending direction of the power supply line 2, and both the inner peripheral surface and the outer peripheral surface are configured by curved surfaces. The bobbin 12 is composed of a square tube-shaped constituent resin molded product curved in an arc shape.

  As shown in FIG. 2, the connecting core 14 includes a coil 13a provided on the inner peripheral surface of the bobbin 12 and a coil 13b provided on the outer peripheral surface, and the coupling portions 5a, 5b. The coupling portion 5a is a male connector having a convex shape, and the coupling portion 5b is a female connector having a concave shape and fitted to the male connector. The coils 13a and 13b in the connecting core 14 are configured by, for example, windings having an insulating coating arranged in parallel on the outer peripheral surface and the inner peripheral surface of the bobbin 12 at equal intervals.

  The end surface core 15 includes two types of end surface core 15A and end surface core 15B. As shown in FIG. 3, the end surface core 15 </ b> A includes a coil 13 c that is continuous on the inner peripheral surface, outer peripheral surface, and one side surface of the bobbin 12, and the coil that is disposed on the inner peripheral surface and outer peripheral surface of the bobbin 12. It has the coupling | bond part (2nd coupling | bond part) 5c couple | bonded with the coupling | bond part 5a in the one end side of 13c. The coupling portion 5c is a female connector. Further, the end surface core 15B has a coil 13d continuous on the inner peripheral surface, outer peripheral surface and one side surface of the bobbin 12, and is disposed on one end side of the coil 13d disposed on the inner peripheral surface and outer peripheral surface of the bobbin 12. It has the coupling | bond part (2nd coupling | bond part) 5d couple | bonded with the coupling | bond part 5b. The coupling portion 5d is a male connector.

  For example, the core 11 is divided into two parts at the opposite side of the opening groove 11a, and the ends of the body part are joined to each other after the two connecting cores 14 are extrapolated to the respective body parts. The pickup unit 10 shown in FIG. 2 is configured. Moreover, after the two end surface cores 15A and 15B are extrapolated to the body portion, the end portions of the body portion are joined to each other to constitute the pickup unit 10 shown in FIG.

  And in the electric power feeder 1, as shown in FIG. 4, by connecting the two end surface cores 15A and 15B to the plurality of connecting cores 14 in the extending direction of the power supply line 2 using the coupling portions 5a to 5d. A configuration can be adopted in which the coil 13 is wound around the whole of the plurality of pickup units 10.

  As described above, in the power supply device 1 according to Embodiment 1, the coil 13 is wound around the outer periphery of the plurality of pickup units 10 connected by connecting the connecting core 14 and the end surface core 15. it can. For this reason, it is only necessary to connect a plurality of adjusted connecting cores 14 and end face cores 15 to the specifications of the load such as the transport vehicle 4 with different voltages, without requiring a change in installation space, size, and cost. The output power of the power feeding device 1 can be easily adjusted.

(Embodiment 2)
A non-contact power feeding apparatus according to Embodiment 2 of the present invention will be described with reference to FIGS. The same components as those of the contactless power supply device according to the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 5, the power feeding device according to the second embodiment includes two types of end surface plates 16A and 16B that are attached to the end surface of the connecting core 14 via coupling portions 5a and 5b. The end plate 16A or 16B has a coil 13e that connects the coil 13a on the inner peripheral surface and the coil 13b on the outer peripheral surface provided on the connecting core 14.

  As shown in FIGS. 6A to 6C, the end face plate 16A has coupling portions 5a that are male connectors at both ends of the coil 13e. As shown in FIGS. 6D to 6F, the end face plate 16B has coupling portions 5b that are female connectors at both ends of the coil 13e.

  Further, as shown in FIG. 7, the power supply device according to the second embodiment has a plurality of end face plates 16 </ b> A and 16 </ b> B connected to a plurality of connecting cores 14 using coupling portions 5 a and 5 b. The entire pickup unit 10 can be configured such that the coil 13 is wound around. With this configuration, in the power feeding device according to the second embodiment, in addition to the effects of the first embodiment, it is possible to share components in the pickup unit 10.

  The present invention is not limited to the configuration of the embodiment described above, and various modifications can be made without departing from the spirit of the invention. For example, the core 11 of the pickup unit 10 is not limited to a substantially cylindrical shape, and the bobbin 12 is not limited to a substantially rectangular tube shape. It is also possible to arrange the coils directly only on the inner and outer peripheral surfaces of the core without using a bobbin, and arrange the coils directly on the inner and outer peripheral surfaces and one side of the core, and connect these cores. obtain.

DESCRIPTION OF SYMBOLS 1 Non-contact electric power feeder 2 Power supply line 3 Power supply device 4 Carrier vehicle 5a, 5b, 5c, 5d Coupling part 10 Pickup part 11 Core 12 Bobbin 13, 13a, 13b, 13c, 13d, 13e Coil 14 Connecting core 15, 15A, 15B End face core 16A, 16B End face plate

Claims (2)

In a non-contact power feeding device that includes a pickup unit that is inductively coupled to a feeder line through which a high-frequency current flows, and that feeds a load by an induced electromotive force induced in the pickup unit,
The pickup unit includes a connecting core and an end surface core connected to an end surface of the connecting core,
The coupling core has coils disposed only on the inner peripheral surface and outer peripheral surface of a substantially rectangular tube-shaped bobbin that is extrapolated to the core of the pickup unit, and coupling portions at both ends of the inner peripheral surface and outer peripheral surface coils. Have
The end surface core includes a coil disposed on an inner peripheral surface, an outer peripheral surface, and one side surface of the bobbin, and is fitted to the coupling portion on one end side of the coil disposed on the inner peripheral surface and the outer peripheral surface. A non-contact power feeding device having two coupling portions. An end face plate attached to the end face of the connecting core via the coupling portion;
The non-contact power feeding device according to claim 1, wherein the end surface plate is provided with a coil connecting an inner peripheral surface coil and an outer peripheral surface coil disposed in the coupling core.