JP2019140870A - Heat dissipation device and ground side power supply system - Google Patents

Abstract

To efficiently dissipate heat generated by a ground side pad.SOLUTION: A heat dissipation device 3 for a power transmission pad 20 of a ground-side power supply device 2 that supplies power in a non-contact manner to a moving body-side power supply device 4 provided in a vehicle V, includes: a placement unit 30 placed on an installation surface G and provided at a position where the vehicle V is placed during power feeding; and a connection unit 31 that connects the power transmission pad 20 and the placement unit 30. The placement unit 30 and the connection unit 31 each has thermal conductivity.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a heat dissipation device and a ground-side power supply system.

  For example, Patent Document 1 describes a ground-side power feeding device that transmits power from the ground side in a non-contact manner to a moving body-side power feeding device provided in a moving body such as a vehicle.

Japanese Patent Laid-Open No. 2006-1940

  Here, at the time of power feeding between the ground side power feeding device and the moving body side power feeding device, the ground side pad provided in the ground side power feeding device generates heat. For this reason, in this technical field, in order to suppress the temperature rise of a ground side pad, it is calculated | required to thermally radiate the heat | fever which generate | occur | produced with the ground side pad efficiently.

  Then, an object of this invention is to provide the thermal radiation apparatus and the ground side electric power feeding system which can thermally radiate the heat | fever which generate | occur | produced with the ground side pad efficiently.

  One aspect of the present invention is a heat dissipation device for a ground-side pad of a ground-side power supply device that supplies power to a mobile-object-side power supply device provided on a moving body, and is placed on an installation surface and moves when power is supplied The mounting part provided in the position which a body mounts, and the connection part which connects a ground side pad and a mounting part are provided, and a mounting part and a connection part each have thermal conductivity.

  In this heat radiating device, the heat generated by the ground-side pad during power feeding to the ground-side power feeding device is transmitted to the placement portion via the connecting portion. Here, at the time of power feeding, the moving body is placed on the placement portion. That is, at the time of power feeding, the placement unit is pressed against the installation surface by the weight of the moving body, and is more reliably brought into contact with the installation surface. Thereby, the heat radiating device can efficiently dissipate the heat transmitted to the placement unit from the placement unit to the installation surface.

  In the heat dissipation device, the mounting unit includes a first mounting unit and a second mounting unit extending along a predetermined direction, and the first mounting unit and the second mounting unit are the first mounting unit. The ground side pad is disposed between the first mounting part and the second mounting part, and the connecting part connects the ground side pad and the first mounting part, and the ground side pad and the second mounting part. And may be linked. When the moving body is a vehicle, the heat dissipating device can provide the first placement portion at a position where the left tire of the vehicle is placed and provide the second placement portion at a position where the right tire of the vehicle is placed. Thus, the heat radiating device can be provided with the placement portion only on the portion where the moving body is placed.

  In the heat dissipating device, the mounting portion may include a convex portion that has thermal conductivity and is inserted into the installation surface on the surface on the installation surface side. In this case, the contact area between the placement portion and the installation surface increases. Thereby, the mounting part can more efficiently dissipate heat to the installation surface.

  In the heat radiating device, the placement unit may include a spring having thermal conductivity and elastically deforming along a facing direction between the placement unit and the installation surface on the surface on the installation surface side. In this case, the mounting portion can increase the contact area with the installation surface even if the upper surface of the installation surface is uneven. Thereby, the mounting part can more efficiently dissipate heat to the installation surface.

  Another aspect of the present invention is a ground-side power feeding system including the above-described heat dissipation device and a ground-side power feeding device, and the ground-side power feeding device controls power feeding to the ground-side pad and the mobile-side power feeding device. And a weight sensor that is attached to the upper surface of the mounting unit and detects the weight applied to the upper surface of the mounting unit, and the control unit has a predetermined reference weight with a weight detected by the weight sensor. In the above case, power supply to the mobile unit side power supply apparatus is permitted, and power supply to the mobile unit side power supply apparatus is not permitted when the weight detected by the weight sensor is less than the reference weight.

  In this ground-side power supply system, power supply is not permitted when the weight detected by the weight sensor is less than the reference weight, such as when a moving object is not placed on the placement unit. In other words, the ground-side power supply system does not permit power supply when the placement unit is not pressed against the installation surface due to the weight of the moving body and heat dissipation efficiency from the placement unit to the installation surface is low. Thereby, the ground side electric power feeding system can perform electric power feeding with respect to the mobile body side electric power feeder, when the thermal radiation efficiency from a mounting part to an installation surface is high.

  According to various aspects of the present invention, it is possible to efficiently dissipate heat generated by the ground pad.

It is a top view which shows schematic structure of the ground side electric power feeding system which concerns on embodiment. It is the figure which looked at the vehicle which stops in an electric power feeding position, and the ground side electric power feeding system from the side. It is a block diagram which shows schematic structure of a ground side electric power feeder. It is a side view which shows the modification of a mounting part. It is a side view which shows the modification of a mounting part. It is a top view which shows schematic structure of a ground side electric power feeding system provided with the thermal radiation apparatus of a 1st modification. It is a top view which shows schematic structure of a ground side electric power feeding system provided with the thermal radiation apparatus of a 2nd modification. It is a top view which shows schematic structure of a ground side electric power feeding system provided with the thermal radiation apparatus of a 3rd modification. It is a top view which shows schematic structure of a ground side electric power feeding system provided with the thermal radiation apparatus of a 4th modification. It is a top view which shows schematic structure of a ground side electric power feeding system provided with the thermal radiation apparatus of a 5th modification. It is a top view which shows schematic structure of the ground side electric power feeding system in a modification. It is the figure which looked at the drone landing on the ground side electric power feeding system and ground side electric power feeding system of a modification from the side.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 1 and 2, the ground-side power feeding system 1 transmits power to the mobile body-side power feeding device 4 in a contactless manner. The moving body side power feeding device 4 is mounted on a vehicle V which is an electric vehicle, for example. The ground-side power supply system 1 supplies power to the moving body-side power supply device 4 of the vehicle V using magnetic coupling between coils such as a magnetic field resonance method or an electromagnetic induction method. Note that the non-contact power feeding method is not limited to the one using magnetic coupling, and may be an electric field resonance method, for example. The ground side power feeding system 1 includes a ground side power feeding device 2 and a heat radiating device 3.

  As shown in FIG. 3, the ground-side power feeding device 2 includes a power transmission pad (ground-side pad) 20 and a plurality of weight sensors 24. The power transmission pad 20 is placed on the pad support portion 31e (see FIG. 2) of the heat dissipation device 3. The power transmission pad 20 transmits power to the moving body side power supply device 4 of the vehicle V in a non-contact manner via a magnetic field.

  More specifically, the power transmission pad 20 includes a power transmission coil device 21, a power transmission circuit 22, and a power transmission control unit (control unit) 23. Although illustration of the power transmission circuit 22 and the power transmission control unit 23 is omitted in FIG. 1 and the like, the power transmission circuit 22 and the like are arranged at predetermined positions in the housing 25 of the power transmission pad 20.

  The weight sensor 24 is a sensor that detects weight. The weight sensor 24 may be a sensor including a strain gauge, for example. The plurality of weight sensors 24 are respectively attached to the upper surfaces of the left front mounting portion 30a, the right front mounting portion 30b, the left rear mounting portion 30c, and the right rear mounting portion 30d of the heat dissipation device 3. The weight sensor 24 detects the weight applied to the upper surface of the left front mounting portion 30a, that is, the weight of the vehicle V.

  In the present embodiment, three weight sensors 24 are attached to each of the left front mounting portion 30a, the right front mounting portion 30b, the left rear mounting portion 30c, and the right rear mounting portion 30d. The three weight sensors 24 attached to the left front placement unit 30a are arranged side by side along the traveling direction of the vehicle V that rides on the left front placement unit 30a in order to receive power supply. Thereby, even if the stop position of the vehicle V is slightly deviated, the weight of the vehicle V is detected by at least one of the three weight sensors 24. The weight sensor 24 attached to the other right front placement unit 30b, the left rear placement unit 30c, and the right rear placement unit 30d is also arranged in the same manner as the weight sensor 24 attached to the left front placement unit 30a. Yes.

  The power transmission control unit 23 controls power transmission (power feeding) to the power receiving coil device 40 in the power transmission coil device 21. Specifically, the power transmission control unit 23 controls the operation of the power transmission circuit 22 to control the power transmission state (power transmission on / off) from the power transmission coil device 21 to the power reception coil device 40 of the mobile-side power feeding device 4. To do. The power transmission control unit 23 controls the power transmission state of the power transmission coil device 21 based on various conditions such as an instruction to start power transmission from the driver of the vehicle V and the presence or absence of a shift in the stop position of the vehicle V.

  Further, the power transmission control unit 23 determines permission or non-permission of power transmission (power feeding) based on the detection result of the weight sensor 24 and controls the power transmission state of the power transmission coil device 21. Here, the power transmission control unit 23 permits power transmission in the power transmission coil device 21 when the weight detected by the weight sensor 24 is equal to or greater than a predetermined reference weight. In addition, the power transmission control unit 23 disallows power transmission in the power transmission coil device 21 when the weight detected by the weight sensor 24 is less than a predetermined reference weight. Here, the reference weight is a value serving as a reference for determining whether or not the vehicle V to be transmitted is placed on the left front placement unit 30a or the like. That is, the power transmission control unit 23 determines whether or not the vehicle V is mounted on the left front mounting unit 30a or the like based on the detection result of the weight sensor 24. The power transmission control unit 23 does not permit power transmission when the vehicle V is not mounted on the left front mounting unit 30a or the like, and permits power transmission when the vehicle V is mounted.

  The power transmission control unit 23 may permit power transmission in the power transmission coil device 21 when the detection result of any one of the plurality of weight sensors 24 is equal to or greater than the reference weight. In the power transmission control unit 23, the detection result of any one of the three weight sensors 24 provided in the left front placement unit 30a is equal to or greater than the reference weight, and the power transmission control unit 23 includes the three weight sensors 24 provided in the right front placement unit 30b. Any of the three weight sensors 24 provided in the left rear mounting portion 30c is equal to or higher than the reference weight, and the right rear mounting portion 30d When the detection result of any of the three weight sensors 24 provided is equal to or greater than the reference weight, power transmission in the power transmission coil device 21 may be permitted.

  The power transmission control unit 23 includes, for example, an ECU (Electronic Control Unit) including a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory).

  The power transmission circuit 22 generates high-frequency AC power suitable for non-contact power supply from power supplied from an external power source (not shown) based on an instruction from the power transmission control unit 23. The means for generating AC power is, for example, an inverter circuit that switches a power MOSFET. The power transmission circuit 22 can appropriately include a rectifier circuit and a DC / DC converter depending on whether the power supplied from an external power source or the like is direct current or alternating current. The power transmission circuit 22 supplies the generated AC power to the power transmission coil device 21.

  The power transmission coil device 21 includes a coil. The power transmission coil device 21 generates a magnetic field by the AC power supplied from the power transmission circuit 22. This magnetic field is an alternating magnetic field that changes in a sinusoidal shape over time. That is, the power transmission coil device 21 is contactless with respect to the power receiving coil device 40 of the moving body side power feeding device 4 mounted on the vehicle V via the magnetic field in a state where the vehicle V is stopped at a predetermined power feeding position. Power transmission. Here, the power feeding position is a position of the vehicle V when the power transmission coil device 21 of the ground side power feeding device 2 and the power receiving coil device 40 of the vehicle V face each other.

  The heat dissipation device 3 is installed on the installation surface G. The heat radiating device 3 radiates heat generated in the power transmission pad 20 to the installation surface G. The heat dissipation device 3 includes a placement unit 30 and a connection unit 31. The placement unit 30 is placed on the installation surface G. The placement unit 30 is provided at a position where the vehicle V is placed during power feeding between the power transmission coil device 21 of the ground-side power feeding device 2 and the power receiving coil device 40 of the moving body-side power feeding device 4.

  More specifically, the mounting unit 30 includes a left front mounting unit 30a, a right front mounting unit 30b, a left rear mounting unit 30c, and a right rear mounting unit 30d. The left front mounting part 30a, the right front mounting part 30b, the left rear mounting part 30c, and the right rear mounting part 30d have a rectangular plate shape. The left front mounting portion 30a is disposed at a position where the front tire FT on the left side of the vehicle V is mounted when the vehicle V stops at the power feeding position. That is, the left front mounting portion 30a is disposed in the region S1 where the left front tire FT is positioned when the vehicle V stops at the power feeding position.

  Similarly, the right front mounting unit 30b, the left rear mounting unit 30c, and the right rear mounting unit 30d are respectively a front tire FT on the right side of the vehicle V and a rear tire on the left side when the vehicle V stops at the power feeding position. The RT and the right rear tire RT are disposed at positions. That is, the right front mounting portion 30b, the left rear mounting portion 30c, and the right rear mounting portion 30d are, when the vehicle V stops at the power feeding position, the region S2 where the right front tire FT is located, It is arranged in a region S3 where the rear tire RT is located and a region S4 where the right rear tire RT is located.

  As shown in FIG. 2, inclined surfaces that are inclined with respect to the installation surface G are formed at corners at both ends along the traveling direction of the vehicle V in the left front mounting portion 30 a. Thereby, the impact on the vehicle V is suppressed when the front tire FT on the left side of the vehicle V rides on the left front mounting portion 30a or descends from the left front mounting portion 30a to the installation surface G. Further, the three weight sensors 24 installed on the upper surface of the left front mounting portion 30a are arranged along the traveling direction when the front tire FT on the left side of the vehicle V rides on the left front mounting portion 30a.

  Similar to the left front mounting portion 30a, the right front mounting portion 30b, the left rear mounting portion 30c, and the right rear mounting portion 30d are also inclined. Similarly to the weight sensor 24 provided on the left front mounting portion 30a, the weight sensor 24 provided on each of the right front mounting portion 30b, the left rear mounting portion 30c, and the right rear mounting portion 30d is also provided on the right front mounting portion. It arrange | positions along the advancing direction when the vehicle V rides on the mounting part 30b.

  The connecting portion 31 is installed in a state of floating from the installation surface G. The connection unit 31 connects the power transmission pad 20 and the placement unit 30. Here, the connection part 31 is in contact with the power transmission pad 20 and the mounting part 30 so that heat can be transferred between the power transmission pad 20 and the mounting part 30.

  More specifically, the connecting portion 31 includes a left front connecting portion 31a, a right front connecting portion 31b, a left rear connecting portion 31c, a right rear connecting portion 31d, and a pad support portion 31e. The pad support part 31e has a rectangular plate shape. The power transmission pad 20 is placed on the pad support portion 31e. The left front connecting part 31a connects the left front mounting part 30a and the pad support part 31e. The right front connecting portion 31b connects the right front placing portion 30b and the pad support portion 31e. The left rear connecting portion 31c connects the left rear mounting portion 30c and the pad support portion 31e. The right rear connection portion 31d connects the right rear placement portion 30d and the pad support portion 31e.

  In the present embodiment, the power receiving coil device 40 of the moving body side power feeding device 4 is provided at the bottom of the vehicle body of the vehicle V. The power receiving coil device 40 is provided at a substantially central position in the vehicle width direction of the vehicle V. The power receiving coil device 40 is provided at a substantially central position between the front tire FT and the rear tire RT of the vehicle V in the front-rear direction of the vehicle V. When corresponding to the installation position of the receiving coil device 40, the pad support portion 31e is viewed along the vehicle width direction of the vehicle V placed on the placement portion 30 (on the left front placement portion 30a or the like) It is disposed at a substantially central position between the left front mounting portion 30a and the left rear mounting portion 30c. Further, the pad support portion 31e has a left front placement portion 30a and a right front placement portion 30b when viewed along the front-rear direction of the vehicle V placed on the placement portion 30 (on the left front placement portion 30a or the like). It is arrange | positioned in the approximate center position between.

  Thus, when the vehicle V stops at the power feeding position, the power transmission coil device 21 and the power receiving coil device 40 face each other, the left front tire FT is placed on the left front placement portion 30a, and the right front placement portion 30b is placed on the right side. The front tire FT is placed, the left rear tire RT is placed on the left rear placement portion 30c, and the right rear tire RT is placed on the right rear placement portion 30d.

  The placement part 30 and the connection part 31 each have thermal conductivity. For this reason, the heat generated in the power transmission coil device 21 and the like of the power transmission pad 20 is transmitted to the pad support portion 31e on which the power transmission pad 20 is mounted, and the left front mounting portion from the pad support portion 31e via the left front connecting portion 31a. 30a. Similarly, the heat generated in the power transmission pad 20 is transmitted from the pad support part 31e to the right front mounting part 30b via the right front connection part 31b. The heat generated in the power transmission pad 20 is transmitted from the pad support portion 31e to the left rear placement portion 30c through the left rear connection portion 31c. The heat generated in the power transmission pad 20 is transmitted from the pad support part 31e to the right rear mounting part 30d through the right rear connection part 31d.

  It is preferable that the mounting part 30 and the connection part 31 are formed of a material having a high thermal conductivity. For example, the mounting part 30 and the connection part 31 may be formed of a material having a thermal conductivity of 50 W / (m · K) or more. The placement unit 30 and the connection unit 31 may be formed of a metal such as copper, aluminum, or iron, for example. The left front connecting part 31a, the right front connecting part 31b, the left rear connecting part 31c, and the right rear connecting part 31d may be heat pipes that transmit heat.

  As described above, in the ground side power feeding system 1, the heat generated in the power transmission pad 20 during power transmission from the power transmission coil device 21 to the power reception coil device 40 is generated by the connection portion 31 (the left front connection portion 31 a, the right front connection portion 31 b, the left rear connection). Mounting part 30 (left front mounting part 30a, right front mounting part 30b, left rear mounting part 30c, and right rear mounting part 30d) via part 31c, right rear connection part 31d, and pad support part 31e). Is transmitted to. Here, when power is transmitted from the power transmission coil device 21 to the power reception coil device 40, the front tire FT and the rear tire RT of the vehicle V are placed on the placement unit 30. That is, at the time of power transmission from the power transmission coil device 21 to the power receiving coil device 40, the placement unit 30 is pressed against the installation surface G by the weight of the vehicle V. There is no slight gap (air layer) between them. In this way, the placement unit 30 is more reliably brought into contact with the installation surface G. Thereby, the heat radiating device 3 can efficiently dissipate the heat transmitted to the placement portion 30 from the placement portion 30 to the installation surface G, as indicated by the dashed arrows in FIG.

  The connecting portion 31 (the left front connecting portion 31a, the right front connecting portion 31b, the left rear connecting portion 31c, the right rear connecting portion 31d, and the pad support portion 31e) has a structure in contact with the installation surface G. The transmitted heat is radiated from the connecting portion 31 to the installation surface G, and can be radiated more efficiently.

  The left front mounting portion 30a, the right front mounting portion 30b, the left rear mounting portion 30c, and the right rear mounting portion 30d are regions S1 to S4 where the tires of the vehicle V are located when the vehicle V stops at the power feeding position. Are installed respectively. Thereby, the heat radiating device 3 can provide the left front mounting portion 30a and the like only in a portion where the tire of the vehicle V is mounted.

  The power transmission control unit 23 disallows power transmission when the weight detected by the weight sensor 24 is less than the reference weight, such as when the vehicle V is not placed on the placement unit 30. That is, the power transmission control unit 23 does not permit power transmission when the placement unit 30 is not pressed against the installation surface G due to the weight of the vehicle V and the heat dissipation efficiency from the placement unit 30 to the installation surface G is low. And Thereby, the ground side electric power feeding system 1 can perform electric power transmission from the power transmission coil apparatus 21 to the receiving coil apparatus 40, when the thermal radiation efficiency from the mounting part 30 to the installation surface G is high.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. For example, as shown in FIG. 4, a plurality of springs 51 having thermal conductivity may be provided on the lower surface (surface on the installation surface G side) of the left front mounting portion 30a. The spring 51 is elastically deformed along the facing direction between the left front mounting portion 30a and the installation surface G. For example, the spring 51 may be a band-shaped member that can be elastically deformed, and both end portions of the band may be fixed to the lower surface of the left front mounting portion 30a. In this case, the left front mounting portion 30a can increase the contact area with the installation surface G even if the upper surface of the installation surface G is uneven. Thereby, the left front mounting part 30a can perform heat dissipation to the installation surface G more efficiently. Similarly to the left front mounting portion 30a, the spring 51 may be provided for the right front mounting portion 30b, the left rear mounting portion 30c, and the right rear mounting portion 30d.

  For example, as shown in FIG. 5, the lower surface (the surface on the installation surface G side) of the left front mounting portion 30 a is provided with a plurality of weight-like convex portions 52 that have thermal conductivity and are inserted into the installation surface G. It may be. In FIG. 5, only the tip of the convex portion 52 is inserted into the installation surface G, but the entire convex portion 52 may be inserted into the installation surface G. In this case, the contact area between the left front mounting portion 30a and the installation surface G increases. Thereby, the left front mounting part 30a can perform heat dissipation to the installation surface G more efficiently. In addition, the convex part 52 may be provided similarly to the left front mounting part 30a also about the right front mounting part 30b, the left rear mounting part 30c, and the right rear mounting part 30d.

  A first modification of the heat dissipation device will be described. As shown in FIG. 1, the heat dissipation device 3 according to the embodiment includes the pad support portion 31 e on which the power transmission pad 20 is placed, but may not include the pad support portion 31 e. That is, the power transmission pad 20 may be placed directly on the installation surface G. For example, as illustrated in FIG. 6, the heat dissipation device 3A of the ground-side power feeding system 1A according to the present modification includes a placement unit 30 and a connection unit 31A. The connecting portion 31A includes a left front connecting portion 31a, a right front connecting portion 31b, a left rear connecting portion 31c, and a right rear connecting portion 31d. The left front connecting portion 31 a is connected to the left front mounting portion 30 a and is directly connected to the side surface of the housing 25 of the power transmission pad 20. Similarly, the right front connection portion 31b and the like are also connected to the right front placement portion 30b and the like, and are directly connected to the side surface of the housing 25 of the power transmission pad 20 and the like. Even in this case, the heat radiating device 3 </ b> A can transfer the heat generated in the power transmission pad 20 to the placement unit 30 via the connection portion 31 </ b> A and radiate the heat to the installation surface G.

  A second modification of the heat dissipation device will be described. For example, as shown in FIG. 7, the heat radiating device 3 </ b> B of the ground-side power feeding system 1 </ b> B includes a placement unit 60 and a coupling unit 61. The mounting part 60 and the connection part 61 have thermal conductivity. The placement unit 60 includes a first placement unit 60a and a second placement unit 60b extending along a predetermined direction. The 1st mounting part 60a and the 2nd mounting part 60b are exhibiting strip | belt shape. The first placement part 60a and the second placement part 60b extend along the traveling direction of the vehicle V toward the power feeding position.

  The 1st mounting part 60a and the 2nd mounting part 60b are arrange | positioned at the installation surface G so that the power transmission pad 20 may be inserted | pinched between the 1st mounting part 60a and the 2nd mounting part 60b. The first placement portion 60a extends from a region S1 where the left front tire FT is located to a region S3 where the left rear tire RT is located when the vehicle V stops at the power feeding position. The second placement portion 60b extends from a region S2 where the right front tire FT is located to a region S4 where the right rear tire RT is located when the vehicle V stops at the power feeding position. That is, when power is transmitted from the ground-side power supply system 1B to the vehicle V, the front tire FT and the rear tire RT on the left side of the vehicle V are placed on the first placement portion 60a, and the front side on the right side of the vehicle V is placed on the second placement portion 60b. A tire FT and a rear tire RT are mounted.

  The connection unit 61 connects the power transmission pad 20 and the placement unit 60. The connecting portion 61 includes a left connecting portion 61a, a right connecting portion 61b, and a pad support portion 61c. The power transmission pad 20 is placed on the pad support portion 61c. The left connecting portion 61a connects the first placement portion 60a and the pad support portion 61c. The right connecting portion 61b connects the second placement portion 60b and the pad support portion 61c. The left connecting part 61a and the right connecting part 61b may be heat pipes that transmit heat.

  Even in this case, the heat dissipation device 3B can efficiently dissipate the heat generated in the power transmission pad 20 from the first mounting portion 60a and the second mounting portion 60b to the installation surface G. Further, the heat dissipation device 3B can be provided with the first placement portion 60a and the second placement portion 60b only in a portion where the tire of the vehicle V is placed.

  In the heat radiating device 3B, when the vehicle V moves to the power feeding position, the vehicle V only needs to ride on the first placement portion 60a and the second placement portion 60b. On the other hand, in the heat radiating device 3 shown in FIG. 1, when the vehicle V moves to the power feeding position, for example, the front tire FT on the left side of the vehicle V gets on and off the left rear mounting portion 30c and then the left front mounting. Get on the part 30a. As described above, in the heat radiating device 3B shown in FIG. 7, the number of times the vehicle V gets on and off the mounting portion 60 can be reduced, and the impact applied to the vehicle V when getting on and off the mounting portion 60 can be suppressed. In addition, the inclined surface which inclines diagonally with respect to the installation surface G is formed in the corner | angular part of the 1st mounting part 60a and the 2nd mounting part 60b similarly to the left front mounting part 30a in embodiment. May be. In this case, the impact on the vehicle V when the vehicle V gets on and off the first placement portion 60a and the second placement portion 60b is suppressed.

  A third modification of the heat dissipation device will be described. For example, as illustrated in FIG. 8, the heat dissipation device 3 </ b> C of the ground-side power feeding system 1 </ b> C is a plate-like member having a substantially H shape. The heat radiating device 3 </ b> C includes a placement unit 70 and a connection unit 71. The mounting part 70 and the connection part 71 have thermal conductivity. The placement unit 70 includes a first placement unit 70a and a second placement unit 70b extending along a predetermined direction. The 1st mounting part 70a and the 2nd mounting part 70b are exhibiting strip | belt shape. The first placement part 70a and the second placement part 70b extend along the traveling direction of the vehicle V toward the power feeding position.

  The 1st mounting part 70a and the 2nd mounting part 70b are arrange | positioned at the installation surface G so that the power transmission pad 20 may be inserted | pinched between the 1st mounting part 70a and the 2nd mounting part 70b. The first placement portion 70a extends from a region S1 where the left front tire FT is located to a region S3 where the left rear tire RT is located when the vehicle V stops at the power feeding position. The second placement portion 70b extends from a region S2 where the right front tire FT is located to a region S4 where the right rear tire RT is located when the vehicle V stops at the power feeding position.

  The connecting portion 71 has a strip shape. The connecting portion 71 connects the first placement portion 70a and the second placement portion 70b. The 1st mounting part 70a, the 2nd mounting part 70b, and the connection part 71 are formed as one member. The power transmission pad 20 is placed on the connecting portion 71. That is, the connecting portion 71 has both a function of connecting the first mounting portion 70 a and the second mounting portion 70 b and a function of supporting the power transmission pad 20. Since the heat radiating device 3C is configured as one member, the heat radiating device 3C is pressed against the installation surface G by the weight of the vehicle V that stops at the stop position. Thereby, the heat radiating device 3 </ b> C can efficiently radiate the heat generated in the power transmission pad 20 to the installation surface G.

  A fourth modification of the heat dissipation device will be described. For example, as illustrated in FIG. 9, the heat radiating device 3 </ b> D of the ground-side power feeding system 1 </ b> D includes a placement unit 80 and a connection unit 81. The mounting part 80 and the connection part 81 have thermal conductivity. The placement unit 80 includes a first placement unit 80a and a second placement unit 80b extending along a predetermined direction. The 1st mounting part 80a and the 2nd mounting part 80b are exhibiting strip | belt shape. The first placement unit 80a and the second placement unit 80b have the same configuration as the first placement unit 60a and the second placement unit 60b in the second modification of the heat dissipation device described with reference to FIG. ing.

  The connecting portion 81 has a strip shape. Both end portions of the connecting portion 81 are overlaid on the upper surface of the first mounting portion 80a and the upper surface of the second mounting portion 80b, respectively. The connecting portion 81 and the first placement portion 80a are connected so that heat can be transferred. The connecting portion 81 and the second placement portion 80b are connected so that heat can be transferred. The connecting portion 81 is connected to the first placement portion 80a and the second placement portion 80b by, for example, welding. Even in this case, the heat radiating device 3D transmits the heat generated in the power transmission pad 20 to the first placement unit 80a and the second placement unit 80b via the connecting portion 81, and the first placement unit 80a. And heat can be efficiently radiated from the second mounting portion 80b to the installation surface G.

  A fifth modification of the heat dissipation device will be described. For example, as shown in FIG. 10, the heat radiating device 3 </ b> E of the ground-side power feeding system 1 </ b> E is a rectangular plate-like member having thermal conductivity. When the vehicle V stops at the power supply position, the heat dissipation device 3E includes a region S1 where the left front tire FT of the vehicle V is located, a region S2 where the right front tire FT is located, and a region where the left rear tire RT is located. The size includes S3 and a region S4 where the right rear tire RT is located.

  The power transmission pad 20 is placed on the heat dissipation device 3E. The heat dissipation device 3 </ b> E includes a placement part 90 and a connection part 91. The placement unit 90 is a part on which each tire of the vehicle V that stops at the power feeding position is placed. That is, in the heat radiating device 3 </ b> E, portions of the regions S <b> 1 to S <b> 4 where the tires of the vehicle V that stops at the power feeding position are located serve as the placement unit 90. The connecting portion 91 is a portion that connects the placement portion 90 and the power transmission pad 20. That is, a portion other than the placement portion 90 in the heat dissipation device 3E serves as the connection portion 91.

  Thus, since the heat radiating device 3E is configured by a single plate, the heat radiating device 3E is pressed against the installation surface G by the weight of the vehicle V that stops at the stop position. Thereby, the heat radiating device 3E can efficiently radiate the heat generated in the power transmission pad 20 to the installation surface G. In addition, the inclined surface which inclines diagonally with respect to the installation surface G may be formed in the corner | angular part of the thermal radiation apparatus 3E similarly to the left front mounting part 30a in embodiment.

  A modification of the ground side power feeding system will be described. As shown in FIGS. 11 and 12, the ground-side power feeding system 1 </ b> F according to the present modification transmits power to the moving body-side power feeding device 4 provided in the flying drone (moving body) D. The ground side power feeding system 1F includes a ground side power feeding device 2 and a heat radiating device 3F. The heat dissipation device 3F is a circular plate-like member having thermal conductivity. The power transmission pad 20 of the ground-side power feeding device 2 is placed at a substantially central position on the upper surface of the heat dissipation device 3F.

  As shown in FIG. 12, the drone D lands at the power feeding position on the heat radiating device 3 </ b> F so that the power receiving coil device 40 of the moving body side power feeding device 4 faces the power transmitting coil device 21 of the power transmission pad 20. In a state where the drone D has landed on the heat radiating device 3F, the leg portion A of the drone D is in contact with the periphery of the power transmission pad 20 on the upper surface of the heat radiating device 3F. An annular portion around the power transmission pad 20 in the upper surface of the heat dissipation device 3F is a region S where the leg A is located when the drone D has landed at the power feeding position.

  The heat radiating device 3 </ b> F includes a placement unit 100 and a connection unit 101. The mounting part 100 and the connection part 101 have thermal conductivity. That is, in the heat radiating device 3 </ b> F, the portion of the region S where the leg portion A of the drone D landing at the power feeding position is the mounting portion 100. The placement unit 100 has an annular shape. The connecting part 101 is a part that connects the placing part 100 and the power transmission pad 20. That is, in the heat radiating device 3 </ b> F, the inner portion of the annular mounting portion 100 becomes the connecting portion 101.

  Thus, since the heat radiating device 3F is configured by a single plate, the heat radiating device 3F is pressed against the installation surface G by the weight of the drone D landing at the stop position. Thereby, the heat radiating device 3F can efficiently radiate the heat generated in the power transmission pad 20 to the installation surface G. Since the heat dissipating device 3F is a circular member, the drone D can easily land on the placement unit 100 even if the direction of the drone D at the time of landing deviates.

  In addition, in the heat radiating devices 3A and 3B described as the modification, the connecting portions 31A and 61 may be installed in a state of floating from the installation surface G, or may be installed in contact with the installation surface G. When the connection portions 31A and 61 are in contact with the installation surface G, heat is also radiated from the connection portions 31A and 61 to the installation surface G, so that heat can be radiated more efficiently.

  The placement unit 30 or the like on which the vehicle V or the like is placed may not be fixed to the installation surface G by a bolt or the like. The placement unit 30 or the like may only be placed on the installation surface G. Even in this case, the placement portion 30 or the like is pressed against the installation surface G by the weight of the vehicle V or the drone D, and the heat dissipation performance of the placement portion 30 or the like is improved.

  Moreover, although the ground side electric power feeding system 1 etc. in the said embodiment and each modification transmitted electric power with respect to the vehicle V or the drone D, you may transmit electric power (electricity feeding) with respect to mobile bodies other than the vehicle V and the drone D. .

  The power transmission pad 20 is not limited to including all of the power transmission coil device 21, the power transmission circuit 22, and the power transmission control unit 23, and may have at least one configuration that generates heat. For example, the power transmission pad 20 may include only the power transmission coil device 21, and the power transmission circuit 22 and the power transmission control unit 23 may be disposed in a housing different from the power transmission pad 20. The power transmission pad 20 may include a power transmission circuit 22 and a power transmission control unit 23, and the power transmission coil device 21 may be disposed in a housing different from the power transmission pad 20.

  In addition, the ground side pad with which the ground side electric power feeder 2 is provided is not limited to the power transmission pad 20, A power receiving pad may be sufficient. That is, a configuration in which power is transmitted from the moving body side power supply apparatus 4 side to the ground side power supply apparatus 2 included in the vehicle V or the like is also possible. In this case, the power receiving pad (ground side pad) included in the ground side power supply device 2 includes at least one of the power receiving coil device, the power receiving circuit, and the power receiving control unit.

  The power transmission pad 20 is placed on the heat dissipating devices 3, 3A to 3F and the like. For this reason, when the heat radiating device 3 or the like is formed of metal, the heat radiating device 3 or the like may also serve as a shield (aluminum shield) provided on the power transmission pad 20.

DESCRIPTION OF SYMBOLS 1,1A-1F Ground side electric power feeding system 2 Ground side electric power feeding apparatus 3,3A-3F Heat radiation apparatus 4 Mobile body side electric power feeding apparatus 20 Power transmission pad (ground side pad)
23 Power transmission control unit (control unit)
24 Weight sensor 30, 60, 70, 80, 90, 100 Placement part 30a Left front placement part (placement part)
30b Right front placement part (placement part)
30c Left rear placement part (placement part)
30d Right rear placement part (placement part)
31, 31A, 61, 71, 81, 91, 101 connecting portion 31a left front connecting portion (connecting portion)
31b Right front connecting part (connecting part)
31c Left rear connecting part (connecting part)
31d Right rear connecting part (connecting part)
31e, 61c Pad support part (connecting part)
51 Spring 52 Convex 60a, 70a, 80a First placement portion (placement portion)
60b, 70b, 80b Second placement portion (placement portion)
61a Left side connection part (connection part)
61b Right side connection part (connection part)
D drone (mobile)
G Installation surface V Vehicle (moving body)

Claims (5)

A heat dissipation device for a ground side pad of a ground side power supply device that supplies power to a mobile body side power supply device provided in a mobile body in a non-contact manner,
A placement unit placed on an installation surface and provided at a position on which the moving body is placed during power feeding; and
A connecting portion that connects the ground pad and the mounting portion;
With
The mounting portion and the connecting portion are each a heat dissipation device having thermal conductivity. The mounting section includes a first mounting section and a second mounting section extending along a predetermined direction,
The first placement part and the second placement part are arranged such that the ground pad is sandwiched between the first placement part and the second placement part,
The heat radiating device according to claim 1, wherein the connecting portion connects the ground-side pad and the first placement portion, and connects the ground-side pad and the second placement portion.   The heat-dissipating device according to claim 1, wherein the placement unit includes a convex portion that has thermal conductivity and is inserted into the installation surface on the surface on the installation surface side.   The said mounting part is provided with the spring which has heat conductivity while elastically deforming along the opposing direction of the said mounting part and the said installation surface in the surface at the said installation surface side. Heat dissipation device. A ground-side power supply system comprising the heat dissipation device according to any one of claims 1 to 4 and the ground-side power supply device,
The ground side power supply device is
The ground pad;
A control unit for controlling power feeding to the mobile body side power feeding device;
A weight sensor that is attached to the upper surface of the mounting unit and detects the weight applied to the upper surface of the mounting unit;
With
When the weight detected by the weight sensor is greater than or equal to a predetermined reference weight, the control unit permits power supply to the mobile unit-side power supply device, and the weight detected by the weight sensor is less than the reference weight. A ground-side power supply system that disallows power supply to the mobile-side power supply device.

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