JP2010284995A - Noncontact power supply apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a noncontact power supply apparatus which has a power supply part provided with a heat radiation structure. <P>SOLUTION: The noncontact power supply apparatus is structured by installing the power supply part provided with a high-frequency generation circuit part and a power supply core part on a structure and by installing a power receiving part provided with a power receiving core part coupled electromagnetically with the power supply core part on an apparatus and the like. The high-frequency generation circuit part is superposed on the power supply core part and at least a heat insulating material is arranged between the high-frequency generation circuit part and the power supply core part. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention includes a moving body such as a material transport vehicle, an elevator, a shopping cart, a self-propelled cleaner, a walking robot, and the like, and supplies non-contact power to other electronic devices and electric devices (hereinafter referred to as devices). More particularly, the present invention relates to a non-contact power feeding device having a heat dissipation structure and having a feature in a power feeding unit installed in a structure such as a building.

  The non-contact power supply device supplies power by generating an induced electromotive force in a coil by magnetic coupling between a power receiving unit provided in a device or the like and a power supply unit installed in a structure such as a building. The non-contact power feeding device is safe because there is no friction part, so there is no wear of the current collector and no spark is generated. When the power supply unit of this non-contact power supply device is applied to the wall outlet of a building, it is installed on the wall of the building. Until now, commercial AC power has been distributed in general buildings. Connected to a non-contact power feeding device. In the power feeding unit of this non-contact power feeding device, the power is converted to DC power by an AC-DC converter circuit, then converted to a high frequency by a high frequency generator circuit, and a high frequency current is passed through the coil of the power supply core wound with the primary coil. To generate a magnetic field. The power receiving unit captures the magnetic field by the power receiving core around which the secondary coil is wound, rectifies it into direct current by the power receiving circuit, and supplies DC power to a desired load. In addition, when DC power is distributed in a building, it is known to supply DC power directly after AC-DC conversion at a power feeding unit.

  Since the power supply unit generates heat during power supply in the non-contact power supply device, a technique related to heat dissipation of the power supply unit is known. For example, Patent Document 1 discloses a technique of providing a heat radiating member on the outside of a pickup core with respect to a non-contact power feeding pickup used in a transport vehicle and a transport system. Patent Document 2 discloses a technique of providing a heat sink on a power feeding core in a non-contact power feeding method for a shopping cart. Patent Document 3 discloses a technique in which a heat dissipation member is provided on a back plate of a power feeding circuit of a non-contact power feeding device.

JP 2002-78103 A JP 2006-128381 A JP 2006-280163 A

The technique disclosed in Patent Document 1 relates to a technique for dissipating heat generated from a power receiving core of a non-contact power feeding unit for a transport vehicle. The technique disclosed in Patent Document 2 is a non-contact power feeding part for a shopping cart. The technology disclosed in Patent Document 3 relates to a structure in which a heat radiating plate is provided on a back plate of a power supply circuit of a non-contact power feeding portion for a flat display. It is.
Each of these technologies shows one means for solving a known problem, but like a conventional commercial AC power outlet body, a non-contact power supply outlet body is installed on the wall of the building. In such a case, it is necessary to suppress the temperature rise as much as possible on the surface where the person may approach. In addition, there is a problem in realizing a structure that considers replacement of the outlet body at the time of repair while using a cover of the outlet body of the non-contact power feeding device having a size similar to that of the conventional outlet cover.

  In order to solve the above-described problems, an object of the present invention is to provide a non-contact power feeding device that can efficiently dissipate heat from a power feeding unit and suppress an increase in temperature of an outlet cover. The contactless power feeding device of the present invention can be installed in a wall from a limited opening of a structure, for example, a wall of a building, and has a structure that insulates heat generated by the power feeding core unit and the high-frequency generation circuit unit. An object of the present invention is to provide a non-contact power feeding device having a non-contact power feeding outlet body that realizes heat dissipation of a heat generation from a power feeding core unit and a high-frequency generation circuit unit through a desired path.

In order to solve the above problems, a contactless power supply device according to the present invention includes a power supply unit including a high-frequency generation circuit unit and a power supply core unit in a structure, and includes a power reception core unit that is electromagnetically coupled to the power supply core unit. The high frequency generation circuit unit and the power supply core unit are overlapped, and a heat insulating material is disposed between the high frequency generation circuit unit and the power supply core unit. In this configuration, for example, a vacuum heat insulating material, glass wool, rock wool, or ceramic fiber is used as the heat insulating material, and these may be used alone or in combination as a composite material. Using such a heat insulating material, it is formed into a heat insulating material having an area equal to or smaller than the cross-sectional areas of the high-frequency generating circuit section and the power feeding core section.
As a result, the high-frequency generation circuit unit and the power supply core unit can be thermally separated, and as a result, individual heat dissipation of each unit is possible, improving the heat dissipation of the power supply core unit located on the side close to the outlet cover, The temperature rise of the outlet cover can be suppressed.

  In the non-contact power feeding device of the present invention, preferably, a heat dissipating material is further disposed between the high frequency generation circuit unit and the power feeding core unit, and the heat dissipating material is disposed on the power feeding core unit side. Thereby, since the individual heat radiation of the power feeding core portion can be efficiently performed, the temperature rise of the outlet cover can be suppressed.

In the contactless power supply device of the present invention, preferably, the power supply core portion is thermally connected to the structure. Thereby, since the electric power feeding core part can radiate heat by the structure, the temperature rise of the outlet cover can be suppressed.
In the contactless power supply device of the present invention, it is preferable that the high-frequency generation circuit unit is thermally connected to the structure. Thereby, the high frequency generation circuit unit can dissipate heat by the structure.

  In the non-contact power feeding device of the present invention, preferably, two heat dissipating materials having at least a heat insulating material between the high frequency generating circuit portion and the power feeding core portion are arranged. Thereby, the high frequency generation circuit unit and the power feeding core unit can be radiated by the respective heat radiating materials.

Moreover, the non-contact electric power feeder of this invention is a structure where the largest cross-sectional area of the electric power feeding part which piled up the said high frequency generation circuit part and electric power feeding core part is smaller than the area of the opening part for outlet installation. As a result, the outlet can be installed or replaced at the time of repair from the outlet installation opening.

  In the non-contact power feeding device of the present invention, it is preferable that the heat dissipating material disposed between the high frequency generation circuit unit and the power feeding core unit has a larger area than the outlet installation opening. Thereby, the heat radiating material can be radiated by the heat radiating material having a large area without being limited by the area of the outlet installation opening.

Moreover, it is preferable that the non-contact electric power feeder of this invention is a shape which can insert the said heat radiating material from the opening part for outlet installation. As a result, the outlet can be easily installed or replaced at the time of repair.

  According to the present invention, since the high-frequency generation circuit unit and the power supply core unit are thermally separated, the heat dissipation of the high-frequency generation circuit unit and the heat dissipation of the power supply core unit can be performed separately, and the mutual thermal influence is suppressed. Therefore, the heat dissipation of the power supply core section is transmitted to the high frequency generation circuit section and the heat dissipation of the high frequency generation circuit section is inhibited, or conversely, the heat dissipation of the high frequency generation circuit section is transmitted to the power supply core section and the heat dissipation of the power supply core section is inhibited. There is no. As a result, the temperature rise of the outlet cover can be suppressed.

The block diagram of the electric power feeding part of the non-contact electric power feeder which concerns on the 1st Embodiment of this invention is shown. The block diagram of the non-contact electric power feeder which concerns on the 1st Embodiment of this invention is shown. The heat-transfer route figure at the time of heat radiation of the non-contact electric power feeder which concerns on the 1st Embodiment of this invention is shown. The block diagram of the electric power feeding part of the non-contact electric power feeder which concerns on the 2nd Embodiment of this invention is shown. The block diagram of the electric power feeding part of the non-contact electric power feeder which concerns on the 3rd Embodiment of this invention is shown. The assembly figure of the electric power feeding part of the non-contact electric power feeder which concerns on the 3rd Embodiment of this invention is shown. The block diagram of Example 1 of the heat sink used for the 3rd Embodiment of this invention is shown. The block diagram of Example 2 of the heat sink used for the 3rd Embodiment of this invention is shown. The block diagram of Example 3 of the heat sink used for the 3rd Embodiment of this invention is shown. The heat-transfer route figure at the time of heat dissipation of the non-contact electric power feeder which concerns on the 3rd Embodiment of this invention is shown. The block diagram of the non-contact electric power feeder which concerns on the 4th Embodiment of this invention is shown. The assembly figure of the electric power feeding part of the non-contact electric power feeder of the 4th Embodiment of this invention is shown. The heat-transfer route figure at the time of heat radiation of the non-contact electric power feeder which concerns on the 4th Embodiment of this invention is shown.

  Embodiments of the present invention will be described below with reference to the drawings. In the figure, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

(First embodiment)
The configuration of the non-contact power feeding device according to the first embodiment will be described in detail below with reference to FIGS.
FIG. 1 is a diagram illustrating a configuration of a power feeding unit 100 of the contactless power feeding device according to the first embodiment. The power supply unit 100 includes a high frequency generation circuit unit 110, a power supply core unit 120, and a heat insulating material 130. As the heat insulating material 130, for example, a heat insulating material such as a vacuum heat insulating material, glass wool, rock wool, ceramic fiber or the like is used, and these may be used alone or in combination as a composite material. Using such a heat insulating material, the heat insulating material 130 having an area equal to or smaller than the cross-sectional areas of the high-frequency generating circuit unit 110 and the power feeding core unit 120 is formed. As shown in FIG. 1, the heat insulating material 130 is sandwiched between the high-frequency generating circuit unit 110 and the power feeding core unit 120 and has a three-layer structure.
The high-frequency generation circuit unit 110 is a known circuit and is an inverter that converts direct current into alternating current. The inverter is configured by bridge-connecting four switch elements made of, for example, MOSFETs or IGBTs, is PWM driven at about 20 kHz, and obtains a sine wave by smoothing the output by a reactor or a capacitor. This inverter is connected as an AC load, and is controlled as a voltage type inverter so that the output voltage becomes constant. In this embodiment, a DC power supply is distributed, and thus an inverter is used. However, when an AC power supply is distributed, a converter that outputs high-frequency power by a high-frequency generation circuit after AC-DC conversion may be used.

The high frequency generation circuit unit 110 includes a high frequency generation circuit 111 and a first housing 112 made of a metal housing such as stainless steel or aluminum, and has a pair of high frequency output terminals 113. The output of the high-frequency generation circuit unit 110 and the power supply coil 121 are electrically connected by a pair of high-frequency output terminals 113 made of shielded wires, and the high-frequency current generated by the high-frequency generation circuit unit 110 passes through the high-frequency output terminal line 113. And a magnetic field is generated by the power feeding core 121. Although the high-frequency output terminal 113 is shown as penetrating the heat insulating material 130 in FIG. 1, it is not always necessary to penetrate the heat insulating material 130, and it is possible to bypass the outside of the heat insulating material 130 by changing the design. In addition, the same can be said in the following embodiments that two wires can be formed as a stranded wire to form a single shape.

The power supply core unit 120 includes a power supply coil 121 wound around the power supply core 122, an insulator 123 that coats the periphery of the power supply coil 121, and a second casing 124 that surrounds the insulator 123. For example, enamel and acetylcellulose are suitable as the coating insulator. The pair of high-frequency output terminals 113 are connected to the feeding coil 121 and constitute a primary side excitation circuit. The second housing 124 is a metal housing made of, for example, stainless steel or aluminum. A portion where the power feeding core portion 120 is exposed from the wall 220 is covered with a power feeding portion cover 125 made of plastic, for example. The power feeding unit cover 125 may be configured to be removable from the power feeding core unit 120.

As shown in FIG. 2, the power feeding unit 100 of the non-contact power feeding device configured as described above includes a wall 210 in which a heat radiating material 212 is disposed on a heat insulating material 211 used in an outer heat insulating structure, and a wall 220 that is visible from the inside of the building. It is installed in the space 230 of the wall structure 200 consisting of
In addition, in this space or outside, there are generally building members 201, 202, 203... That are steel frames and reinforcing members. The building members 201, 202, 203... Are not limited as long as they are materials that can dissipate heat, and may be building foundations, steel frames, stones, or concrete. Such a wall structure is merely an example, and may be inner walls, outer wall materials and inner walls, and the building members 201, 202, 203... May have any shape and arrangement. Thus, the space 230 exists between the wall 210 and the wall 220, and the DC power wiring 231 is circulated in this space 230.
An opening 221 (a broken line portion in FIG. 4) is formed at an appropriate position of the wall 220, and the power feeding unit 100 of the non-contact power feeding device is installed in the opening 221. The power supply unit 100 fixes a power supply unit cover 125 provided to protect the surface of the power supply unit 100 to the wall 220 with two fixing tools (for example, screws) 126. This structure constitutes the outlet body.

  In the embodiment shown in FIG. 2, the power feeding unit 100 is tightly sandwiched between the spaces 230 between the walls 210 and 220, and the power feeding unit 100 is held by the walls 210 and 220. However, such a configuration is an example, and when the space 230 is larger than the power supply unit 100, a structure that couples the high-frequency generation circuit unit 110, the power supply core unit 120, and the heat insulating material 130, such as screws, bolts, or an adhesive. Alternatively, the high-frequency generating circuit unit 110, the power feeding core unit 120, and the heat insulating material 130 may be coupled and integrated by a binding band. Alternatively, the high frequency output terminal 113 may connect the high frequency generation circuit unit 110 and the power feeding core unit 120 at the same time, and the three parties may be integrated.

A power receiving unit including a moving body (not shown) such as a material transport vehicle, an elevator, a shopping cart, a self-propelled cleaner, a walking robot, or the like where other electrical equipment and electronic equipment (equipment, etc.) face the power feeding unit 100. 250 is provided. More specifically, the power feeding core unit 122 and the power receiving core unit 252 of the power receiving unit 250 are provided so as to be magnetically coupled. The power receiving unit 250 is connected to the load 257 through the power cord 256.
The power receiving unit 250 includes a power receiving core unit 252 around which a power receiving coil 251 is wound, and a rectifier circuit 253. The power receiving unit 250 includes a power receiving unit housing 255 that covers the periphery thereof and a power receiving unit cover 254 that covers the front surface thereof. The interior surrounded by the power receiving unit housing 255 and the power receiving unit cover 254 is filled with a coating insulator 258. The coating insulator may be the same as or different from the coating insulator 123 of the power feeding unit 100. When a device or the like approaches the power feeding unit 100 and the power receiving core unit 252 and the power feeding core unit 122 are magnetically coupled, the magnetic field generated in the power feeding core unit 122 penetrates the power feeding unit cover 125 and the power receiving unit cover 254 and receives the power receiving core. Captured at part 252. An alternating current is generated in the power receiving coil 251 by the captured magnetic field and is rectified to a direct current by the rectifier circuit 253. The direct current is supplied to the load 257 through the power cord 256. However, the power receiving unit housing 255 is a housing having a function of shielding magnetic force.

In the above configuration, the power feeding unit 100 of the non-contact power feeding device of the present invention arranges the heat radiation connecting member 241 as a structure for radiating the heat generated in the high frequency generation circuit unit 110 to the building member 201. Further, a heat radiation connecting member 242 is disposed as a structure for radiating heat generated in the power feeding core portion 120 to the building member 202. In this manner, the heat generated in the high-frequency generation circuit unit 110 and the power feeding core unit 120 is radiated. The shape and material of the heat radiation connecting members 211 and 212 are not particularly limited, but it is advantageous to select a material and shape having good thermal conductivity such as aluminum, copper, and iron.
The embodiment shown in FIG. 2 has a structure in which the high-frequency generation circuit unit 110 is in close contact with the heat radiation material 212, so that heat generated from the high-frequency generation circuit unit 110 can be radiated to the wall 210 via the heat radiation material 212. Such a structure is also possible.

As described above, the high frequency generation circuit unit 110, the power supply core unit 120, and the heat insulating material 130 are overlapped, and the power supply unit 100 is integrated by screws, bolts, an adhesive, or a binding band. It is important that the maximum cross-sectional area of the integrated power supply unit 100 be smaller than the area of the opening 221 of the wall 220. Next, the DC power wiring 231 is connected to the high frequency generation circuit unit 110 and inserted through the opening 221 of the wall 220, the heat radiation connecting member 241 contacts the high frequency generation circuit unit 110, and the heat radiation connecting member 242 is the power feeding core. It installs so that the part 120 may be contacted. Then, the power supply cover 125 is fixed to the wall 220 by the fixing tool 126. In this way, the power feeding unit outlet body is fixed to the wall 220.

The heat dissipation path in the first embodiment will be described with reference to FIG.
In the high frequency generation circuit unit 110 of the power supply unit 100, the high frequency generation circuit 111 is a main heat source, and the heat generated there is transmitted to the first housing 112 and is radiated into the air. Further, the heat is transmitted to the building member 202 through the heat radiation connecting member 242 and radiated. Further, the heat is transmitted to the heat radiating material 212 and is radiated. On the other hand, heat dissipation is blocked by the heat insulating material 130, but heat is radiated into the air at a portion where the heat insulating material 130 is not disposed. Further, after being transmitted to the building members 202 and 203, the heat is radiated into the air.
In the power feeding core unit 120, the power feeding core 122 and the power feeding coil 121 are main heat sources, and the heat generated by them is transmitted to the second casing 124 and radiated into the air. Further, the heat is transmitted to the building member 201 through the heat radiation connecting member 241 and is radiated. Heat propagation to the first housing 112 is blocked by the heat insulating material 130.
As described above, the high-frequency generation circuit unit 110 and the power supply core unit 120 can be thermally separated, and as a result, individual heat dissipation of each unit is possible, and the power supply core unit located on the side closer to the power supply unit cover 125 The heat dissipation of 120 can be improved and the temperature rise of the power supply cover 125 can be suppressed.
Such a heat transfer path is indicated by an arrow. The direction of the arrow indicates the heat transfer direction. Through the following embodiments, the power feeding unit 100 and the power receiving unit 250 are connected at the time of power feeding. However, even if there is a slight gap between the power feeding core unit 122 and the power receiving core unit 252, power feeding is possible. . It is more preferable to assist the positioning of the contact surface.

(Second Embodiment)
The non-contact power feeding device according to the second embodiment will be described in detail below with reference to FIG.
The structure in which the second embodiment is different from the power supply unit 100 of the first embodiment is that a heat radiating plate 131 is disposed between the heat insulating material 130 and the power supply core unit 120. Other structures are the same although not shown.
In the second embodiment, the heat radiating plate 131 is formed by using a heat conductive material such as aluminum, copper, or iron, so that the heat generated by the power feeding core unit 120 can be radiated by the heat radiating plate 131. it can. In addition, since the heat generation of the high frequency generation circuit unit 110 is insulated by the heat insulating material 130, the power supply core unit 120 does not overheat due to the heat generation of the high frequency generation circuit unit 110. As a result, the heat radiation connecting member 241 or 242 may be disposed as in the first embodiment, but even when the heat radiation connecting member 241 or 242 cannot be disposed, sufficient heat radiation of the power feeding core unit 120 is achieved. be able to.

In the second embodiment, the heat radiating plate 131 is formed in the same shape and size as the heat insulating material 130, and therefore the power supply unit 100 is inserted from the opening 221 (the broken line portion in FIG. 4) of the wall 220 to form the space 230. A non-contact power feeding device that can be installed in a vehicle can be realized.
The heat insulating material 130 may be a composite material that is combined with the heat radiating plate 131. As for the structure of the heat sink 131, the surface facing the heat insulating material 130 may be processed into a wave shape, and various other shapes in the prior art can be considered.

(Third embodiment)
A non-contact power feeding device according to the third embodiment will be described in detail with reference to FIGS.
As shown in FIG. 5, the structure of the third embodiment different from that of the power supply unit 100 of the second embodiment is that an opening 221 of the wall 220 (a broken line in FIG. 4) is interposed between the heat insulating material 130 and the power supply core unit 120. And the power supply unit 100 as shown in FIG. 6 from the high frequency generation circuit unit 110, the heat insulating material 130, the heat dissipation plate 132, and the power supply core unit 120. And a pair of high-frequency output terminals 113 made of shielded wires are realized by a plug-type insertion / removal structure.
Further, as shown in FIGS. 7, 8, and 9, the heat dissipating plates 133, 134, and 135 can be divided into a plurality of parts. 7, 8, and 9, the heat radiating plate can be divided into a plurality of parts so that the heat radiating plate can be inserted from the opening 221 (broken line portion in FIG. 4) even when the heat radiating connection members 241 and 242 can not be arranged. Thus, it is possible to realize a non-contact power feeding device including the heat radiating plate 132 having an area larger than the area of the opening 221.

In FIG. 7A, the heat radiating plate 133 is divided into left and right like the heat radiating plates 133a and 133b, and when they are combined, the two holes 137 are formed on the dividing line. By forming the two holes 137 in this way, a pair of high frequency output terminals 113 can be passed. Further, the hole 138 formed outside the two holes 137 is a hole to be aligned with the protrusion for positioning the heat sink 133 and preventing the fall. The protrusions may be realized on either or both of the heat insulating material 130 side and the second housing 124 side.
FIG.7 (b) shows the heat insulation board 130, the left side shows the side view of the heat insulation board 130, and the right side shows a top view. The heat insulating plate 130 is divided into left and right parts in the same manner as the heat radiating plate 133 to form heat insulating plates 130a and 130b. Then, a hole 143 is formed on the dividing line and a pair of high frequency output terminals 113 are passed therethrough.
The above description exemplifies a structure in which the heat radiating material 133 is divided into left and right parts, but the heat radiating material 133 is inclined from the opening 221 to the opening 221 of the wall 220 (broken line portion in FIG. 7). If it is a shape that can be installed between the high-frequency generating circuit unit 110 and the power feeding core unit 120, it is not necessary to divide. In the case of a composite material in which the heat insulating material 130 and the heat sink 133 are combined, the composite material may be divided.

Similarly, FIG. 8 shows a configuration in which the heat radiating plate 134 is divided into two vertically such as the heat radiating plates 134a and 134b, and holes 139 are formed in the respective heat radiating plates 134a and 134b. The holes 139 formed in the two heat sinks 134 are holes through which the pair of high frequency output terminals 113 are passed. A hole 140 formed outside the two holes 139 is a hole to be aligned with a protrusion for positioning and preventing the heat sink 134 from falling.
Although the heat insulating plate 130 is not illustrated, like the heat insulating plates 130 a and 130 b, the heat insulating plate 130 is divided into two parts in the same manner as the heat radiating plate 134, and a hole 143 through which the pair of high frequency output terminals 113 is passed is formed.

FIG. 9 shows an example in which the heat sink 135 is divided into left and right and top and bottom like the heat sinks 135 a, 135 b, 135 c, and 135 d, and the hole 141 on the vertical center line is a hole through which the pair of high frequency output terminals 113 are passed. . A hole 142 arranged outside the hole 141 is a hole to be matched with a protrusion for positioning the heat sink 135 and preventing dropping.
Although the heat insulating plate 130 is not shown in FIG. 9, it is divided into left and right and upper and lower four parts similarly to the heat radiating plate 135 to form heat insulating plates 130a, 130b, 130c, and 130d, and a hole 143 is formed on the dividing line to form a pair of high frequency output terminals 113. Through.
The number and shape of the radiator plates 133, 134, and 135 are not limited as long as they can be installed by being inserted from the opening 221 of the wall 220. Further, if the heat sinks 133, 134, 135 are made of a flexible material (for example, a graphite sheet or a metal net), they can be installed without being divided.

  The assembly of the power feeding part of the non-contact power feeding device of the third embodiment will be described with reference to FIG. As shown in FIG. 6, the high frequency generation circuit unit 110 is inserted from the opening 221 of the wall 220. Next, a heat radiating plate 132 and a heat insulating material 130 are overlapped on a pair of plug-type high frequency output terminals 113 and a power supply core portion 120, and these are inserted through the opening 221. At this time, since the heat radiating plate 132 is larger than the area of the opening 221, the heat radiating plate 132, the heat insulating material 130 and the power feeding core portion 120 are put into the space 230 through the opening 221, and the heat radiating plate 132 is placed in the power feeding core portion 120 in the space. And the heat insulating material 130 may be stacked. Thereafter, a pair of plug type high frequency output terminals 113 are inserted into the socket terminals of the high frequency generation circuit unit 110 and integrated. And the electric power feeding part cover 125 is fixed to the wall 220 with the fixing tool 126 like a screw. As a result, the outlet body is installed on the wall 220.

The heat dissipation in the third embodiment will be described with reference to FIG.
The heat generated in the power supply coil 121 and the power supply core 122 of the power supply core unit 120 is transmitted to the outer shell of the second casing 124 and the heat radiating material 132 and then diffused into the air. Heat propagation from the second casing 124 to the first casing 112 is blocked by the heat insulating material 130.
The description of heat dissipation of the high-frequency generation circuit unit 110 is the same as in FIG.

(Fourth embodiment)
The structure of the heat dissipation structure of the non-contact power feeding apparatus for buildings according to the fourth embodiment will be described in detail below with reference to FIG. As shown in FIG. 11, the fourth embodiment is different from the power feeding unit 100 of the third embodiment in that a heat radiating plate 136 a is disposed between the high frequency generation circuit unit 110 and the heat insulating material 130 to supply power to the heat insulating material 130. This is a portion in which a heat radiating plate 136b is disposed between the core portions 120. That is, two heat sinks 136 a and 136 b each having a heat insulating material 130 are disposed between the high frequency generation circuit unit 110 and the power feeding core unit 120. The heat sinks 136a and 136b have a shape wider than the area of the opening 221 (the broken line portion in FIG. 4) of the wall 220 as an overall shape at the time of installation. Further, similarly to the third embodiment, the structures of the high-frequency generation circuit unit 110, the heat radiating plate 136a, the heat insulating material 130, the heat radiating plate 136b, and the power feeding core unit 120 of the power feeding unit 100 can be separated. The terminals of the pair of high-frequency output terminals 113 have a plug-type insertion / removal structure. In this embodiment, the two heat sinks 136a and 136b are described in the same shape, but need not be the same. The heat sinks 136a and 136b may have the same shape as the heat insulating plate 130.

  FIG. 12 is an assembly diagram of the power feeding unit of the contactless power feeding device according to the fourth embodiment. As shown in FIG. 12, the high frequency generation circuit unit 110 is inserted from the opening 221. Next, the heat sink 136a and the heat insulating materials 130 and 136b are inserted from the opening 221 and sequentially stacked. The heat radiating plate 136a and the heat insulating materials 130 and 136b may be stacked and then inserted into the opening 221. Next, the feeding core portion 120 with a pair of plug type high frequency output terminals 113 is inserted from the opening 221, and the pair of plug type high frequency output terminals 113 are inserted into the socket terminals of the high frequency generation circuit portion 110 and integrated. And the electric power feeding part cover 125 is fixed to the wall 220 with the fixing tool 126 like a screw. As a result, the outlet body is installed on the wall 220.

FIG. 13 illustrates heat dissipation in the fourth embodiment.
The heat radiation by the heat radiation material 136a of the high frequency generation circuit unit 110 will be described.
The heat generated in the high frequency generation circuit unit 110 is transmitted to the heat radiating material 136 a through the first housing 112, blocked by the heat insulating material 130, and transmitted in the plane direction of the wall 220. Further, heat is dissipated into the air mainly from the portion of the heat dissipating material 136a facing the space outside the surface of the opening 221 of the wall 220. The shape of the heat insulating material 130 does not need to match the surface of the opening 221 of the wall 220.
Description of heat dissipation other than the direction of the heat dissipating material 136b has already been described in the first embodiment, and is omitted. Further, the heat dissipation of the power feeding core unit 120 is omitted since it has already been described in the third embodiment.

DESCRIPTION OF SYMBOLS 100 Feed part 110 High frequency generation circuit part 111 High frequency generation circuit 112 1st housing | casing 113 High frequency output terminal wire 120 Feed core part 121 Feed coil (primary coil)
122 power supply core 124 second housing 125 power supply cover 130 heat insulating material 131, 132, 133, 134, 135, 136 heat sink 137 hole 201, 202, 203 building member 210 wall 212 heat sink 220 wall 221 opening in wall 241, 242 heat dissipation connection member 250 power receiving unit 251 power receiving coil 252 power receiving core unit

Claims (8)

A non-contact power feeding device having a power receiving unit having a power receiving core unit electromagnetically coupled to the power feeding core unit, wherein the power feeding unit including a high frequency generating circuit unit and a power feeding core unit is electromagnetically coupled to the power feeding core unit. A non-contact power feeding apparatus comprising: a circuit unit and a power feeding core unit, wherein at least a heat insulating material is disposed between the high frequency generation circuit unit and the power feeding core unit. The non-contact electric power feeder of Claim 1 which arrange | positions a heat dissipation material further between the said high frequency generation circuit part and the said electric power feeding core part, and arrange | positions the said heat radiating material on the electric power feeding core part side. The non-contact power feeding device according to claim 1, wherein the power feeding core unit is thermally connected to the structure. The non-contact electric power feeder of any one of Claim 1 to 3 with which the said high frequency generation circuit part is thermally connected with the said structure. The non-contact electric power feeder of Claim 1 which arrange | positions the two heat radiating materials which have at least a heat insulating material between the said high frequency generation circuit part and the said electric power feeding core part. The non-contact power feeding device according to any one of claims 1 to 5, wherein a maximum cross-sectional area of a power feeding unit in which the high-frequency generation circuit unit and the power feeding core unit are overlapped is smaller than an area of the outlet installation opening. The non-radioactive material according to any one of claims 1 to 6, wherein the heat dissipating material disposed between the high-frequency generating circuit section and the power feeding core section has a structure with a larger area than the outlet installation opening. Contact power supply device. The contactless power supply device according to any one of claims 1 to 7, wherein the heat dissipating material has a shape that can be inserted from an opening for outlet installation.

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