WO2016147598A1 - Dispositif dissipateur de chaleur - Google Patents

Dispositif dissipateur de chaleur Download PDF

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Publication number
WO2016147598A1
WO2016147598A1 PCT/JP2016/001231 JP2016001231W WO2016147598A1 WO 2016147598 A1 WO2016147598 A1 WO 2016147598A1 JP 2016001231 W JP2016001231 W JP 2016001231W WO 2016147598 A1 WO2016147598 A1 WO 2016147598A1
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WIPO (PCT)
Prior art keywords
heat
housing
chimney
heat generating
bottom wall
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PCT/JP2016/001231
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English (en)
Japanese (ja)
Inventor
古川　隆
耕司 間崎
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株式会社デンソー
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Publication of WO2016147598A1 publication Critical patent/WO2016147598A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/025—Constructional details relating to cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings

Definitions

  • This disclosure relates to a heat dissipation device.
  • Patent Document 1 in a heat dissipation structure including a casing that is long in the vertical direction and a heat generating component (such as a semiconductor element) that is housed in the casing, a plate that forms the casing has a vent hole that penetrates in the vertical direction. In this case, a heat generating component is fixed to the inside of the casing of the plate. In the heat dissipation structure of Patent Document 1, the efficiency of natural air cooling heat dissipation is enhanced by the chimney effect of the vent holes.
  • a heat generating component such as a semiconductor element
  • the heat dissipation structure as described above is effective because a large number of heat-generating components can be arranged on the plate forming the air vent in a case where the height in the vertical direction is sufficient, but the air vent is sufficiently high. In a case with no housing, many heat generating components cannot be arranged on the plate, and the heat dissipation effect is not sufficiently enhanced.
  • One aspect of the present disclosure for achieving the above object includes a casing having a plate-shaped outer shape, and a plurality of heat generating components that are housed in the casing and generate heat.
  • a part of the plurality of heat generating components is attached to a surface on the inner side of the casing of the first chimney. The heat of the heat generating component is released to the first vent through the first chimney, and the surface of the bottom wall on the inner side of the housing has the heat generating component of the plurality of heat generating components.
  • Another part different from a certain part is attached, and the heat of the other part of the heat generating component is outside the casing through the bottom wall.
  • a heat radiating device characterized in that it is issued.
  • the outer shape of the casing in which the first vent hole penetrates the two surfaces facing the thickness direction of the casing that is, the first vent hole cannot be sufficiently high.
  • the heat generating component is also attached to the bottom wall forming the bottom surface. By doing in this way, the air outside the bottom wall is sucked up into the first vent hole by the chimney effect, so that the heat dissipation efficiency of the heat-generating component arranged on the bottom wall is improved, and the heat dissipation efficiency of the entire heat dissipation device is also improved. improves.
  • the drawing It is a figure which shows the use condition of the non-contact electric power feeder in 1st Embodiment. It is a figure which shows the use condition of the non-contact electric power feeder in 1st Embodiment. It is a perspective view of the non-contact electric power feeder 1 in 1st Embodiment. It is a top view of non-contact electric supply device 1 in a 1st embodiment. It is a front view of the non-contact electric power feeder 1 in 1st Embodiment. It is a bottom view of the non-contact electric power feeder 1 in 1st Embodiment.
  • FIG. 8 is a sectional view taken along line VIII-VIII in FIG. It is a bottom view of the non-contact electric power feeder 1 in 2nd Embodiment.
  • FIG. 10 is a sectional view taken along line XX in FIG. 9. It is sectional drawing of the non-contact electric power feeder 1 in 3rd Embodiment. It is a top view of the apparatus 1 of the state which removed the upper surface cover 11 in 4th Embodiment.
  • FIG. 13 is a sectional view taken along line XIII-XIII in FIG. 12. It is a top view of the non-contact electric power feeder 1 in 5th Embodiment.
  • FIG. 23 is a sectional view taken along line XXIII-XXIII in FIG. It is sectional drawing of the non-contact electric power feeder 1 in 10th Embodiment. It is a top view of the non-contact electric power feeder 1 of the state which removed the upper surface cover 11 in 11th Embodiment.
  • FIG. 26 is a sectional view taken along line XXVI-XXVI in FIG. 25. It is a bottom view of the non-contact electric power feeder 1 in 12th Embodiment. It is XXVIII-XXVIII sectional drawing of FIG.
  • FIG. 16 is a diagram in which heating components 131 to 139 according to the fifteenth embodiment are arranged in order of increasing measurement temperature.
  • a non-contact power feeding device 1 (corresponding to an example of a heat dissipation device) according to the present embodiment is a device that is installed on the ground such as a parking space and charges the vehicle 2 in a non-contact manner.
  • the vehicle 2 is an electric vehicle or a hybrid vehicle, and includes a power receiving pad 3, a power receiving circuit 4, and a battery 5.
  • the power receiving pad 3 is installed at the bottom of the vehicle. This is because, as shown in FIG. 2, the non-contact power feeding device 1 (power transmission pad) and the power receiving pad 3 are opposed to each other with a predetermined interval in the vertical direction during charging.
  • the non-contact power feeding device 1 and the power receiving pad 3 face each other with a predetermined interval in the vertical direction and the non-contact power feeding device 1 generates a magnetic flux, the magnetic flux interlinks with the power receiving pad 3. As a result, the power receiving pad 3 generates an induced electromotive force by electromagnetic induction and applies an AC voltage to the power receiving circuit 4.
  • the power receiving circuit 4 converts the AC voltage output from the power receiving side pad 3 into a DC voltage and applies the DC voltage to the battery 5 to charge the battery 5.
  • the battery 5 is a traveling battery that is operated by applying a voltage to a traveling motor that is a traveling power source of the vehicle.
  • the non-contact power feeding device 1 used for such a purpose is arranged immediately below the bottom of the vehicle 2 when used, it has a thin plate-like outer shape in the vertical direction so as not to collide with the vehicle body of the vehicle 2. Yes.
  • the non-contact power feeding device 1 since the non-contact power feeding device 1 is installed on the ground, there is a possibility of being submerged in some cases. Therefore, natural air cooling is preferable to forced air cooling (however, forced air cooling is not excluded). Moreover, since the non-contact electric power feeder 1 may be stepped on by the tire of the vehicle 2 depending on the case, it may have high rigidity.
  • the non-contact power feeding device 1 includes a housing 10 and a plurality of heat generating components (mountings) 131 to 139 that are housed in the housing 10 and generate heat.
  • Each of the heat generating components 131 to 139 is an element that generates heat when energized.
  • a rectifier circuit and a DC-DC converter that constitute a converter circuit
  • an IGBT that constitutes an inverter circuit
  • a reactor that constitutes an inverter circuit
  • a capacitor that constitute a filter circuit
  • the converter circuit is a circuit that converts alternating current supplied from a commercial power supply outside the non-contact power feeding device 1 into direct current and supplies it to the inverter circuit.
  • the inverter circuit is a circuit that converts the direct current supplied from the converter circuit into a high-frequency rectangular wave alternating current and supplies the alternating current to the coil 135 through the filter circuit.
  • the filter circuit is a circuit that removes a predetermined frequency component included in the alternating current supplied from the inverter circuit.
  • the coil 135 generates magnetic flux for generating the above-described dielectric electromotive force in the power receiving circuit 4 when AC is supplied from the converter circuit via the filter circuit.
  • a power source (not shown) for energizing the heat generating components 131 to 139 is disposed outside the housing 10 and is connected to the inside of the housing 10 from the power source via the cable 6 (see FIG. 1). Electric power is supplied to the heat generating components 131 to 139.
  • a hole (not shown) through which the cable 6 penetrates the inside and outside of the housing 10 is formed in the upper surface cover 11 or the component housing portion 12 of the housing 10. The gap between the hole and the cable 6 is sealed with a sealing material so that no gap is formed.
  • the casing 10 has a flat plate-like outer shape, and the thickness direction thereof is the vertical direction.
  • the housing 10 includes an upper surface cover 11 and a component housing portion 12.
  • the upper surface cover 11 is a flat plate-like member corresponding to the upper lid of the housing 10, and the upper surface of the upper surface cover 11 (surface opposite to the inside of the upper surface cover 11) corresponds to the upper surface of the housing 10. Further, as shown in FIGS. 3 and 4, only one hole forming portion 111 is formed in the central portion of the top cover 11 so as to surround the substantially rectangular cutout.
  • the upper cover 11 is not required to be as thermally conductive as the component housing portion 12, a non-magnetic and non-conductive material such as resin or ceramic is preferable (however, the possibility other than ceramic and resin is excluded). Do not mean).
  • the component accommodating portion 12 is a member that accommodates the heat generating components 131 to 139.
  • the bottom wall 121 and the outer wall 122 are provided.
  • the inner wall 123 is provided.
  • the bottom wall 121 is a flat plate-like member corresponding to the bottom plate of the housing 10 and has substantially the same shape as the top cover 11.
  • the bottom surface of the bottom wall 121 (the surface opposite to the inside of the top cover 11) corresponds to the bottom surface of the housing 10.
  • only one hole forming portion 121 a is formed at the center of the bottom wall 121 so as to surround a substantially rectangular cutout equivalent to the hole forming portion 111 of the top cover 11. ing.
  • the bottom wall 121 has support pillars 61 to 64 standing on the ground supported at the four corners of the bottom surface. Further, as shown in FIGS. 5 and 6, support pillars 65 to 68 which stand on the ground separately from each other are arranged around the hole forming portion 121 a of the bottom wall 121. The support columns 65 to 68 arranged around the chimney in this way are provided in order to ensure load resistance and rigidity of the central portion of the non-contact power feeding device 1.
  • the casing 10 is installed on the ground via the support columns 61 to 68, and a lower air passage is formed between the bottom surface of the bottom wall 121 and the ground (that is, outside the bottom surface).
  • These support columns are members that form a lower air passage communicating with the vent hole X (corresponding to an example of the first vent hole).
  • the outer wall 122 is a member that extends upward from the outer edge of the bottom wall 121 around the entire outer edge of the bottom wall 121, and is formed integrally with the bottom wall 121.
  • the inner wall 123 is a member that extends upward from the hole forming portion 121 a on the entire circumference of the hole forming portion 121 a of the bottom wall 121, and is formed integrally with the bottom wall 121.
  • the bottom wall 121 and the inner wall 123 are integrally formed and connected, but in the cross-sectional views of each embodiment, the boundary between the bottom wall 121 and the inner wall 123 is Virtually indicated by a dotted line.
  • the entire component housing portion 12 is made of a material having high thermal conductivity and high rigidity, and is made of, for example, a non-magnetic metal (for example, copper, aluminum, austenitic stainless steel) that hardly generates heat due to a change in magnetic flux generated by the coil. Or it may be made of a magnetic metal (for example, iron). Or you may consist of resin. Nonmagnetic metals and resins correspond to examples of nonmagnetic materials.
  • the component housing portion 12 When the upper surface cover 11 is joined to the component housing portion 12 with screws or the like, the component housing portion 12 is covered. At this time, the entire outer edge of the bottom surface of the top cover 11 contacts the entire periphery of the upper end of the outer wall 122, and the entire periphery of the bottom surface of the hole forming portion 111 of the top cover 11 contacts the entire periphery of the upper end of the inner wall 123. To do.
  • the hole forming portion 111 of the inner wall 123 and the upper surface cover 11 has one chimney portion (first first portion) that forms one air hole X penetrating from the plate-shaped bottom surface side of the housing 10 to the upper surface side.
  • the notch surrounded by the hole forming part 121a also communicates with the vent hole X.
  • the plate-shaped bottom surface of the housing 10 is the bottom surface of the bottom wall 121
  • the plate-shaped top surface of the housing 10 is the top surface of the top cover 11.
  • the plate-shaped bottom surface and top surface of the housing 10 are respectively one side and the other of two surfaces that form the outer shape of the housing 10 and face each other in the thickness direction of the housing 10.
  • the external dimensions of the housing 10 are, for example, a length (height) in the thickness direction (vertical direction in FIG. 8) of 5 cm, a length in the width direction (horizontal direction in FIG. 4) of 70 cm, and a depth direction ( The length in the vertical direction in FIG. 4 is 60 cm.
  • each of the heat generating components 131, 132, 133, and 134 is joined to the inner side surface of the inner wall 123 of the inner wall 123 through grease so as to transfer heat, and The inner surface is fixed by a bracket and a screw (not shown).
  • each of the heat generating components 131, 132, 133, and 134 is bonded and fixed so that one surface can be transferred to the inner surface via an adhesive.
  • the heat generated by the heat generating components 131, 132, 133, and 134 is transmitted to the inner wall 123 via grease or adhesive, and the heat is released from the inner wall 123 to the vent hole X.
  • the coil 135 is wound around the inner wall 123 below the heat generating components 131, 132, 133, and 134.
  • the inner peripheral side of the coil 135 is joined to the inner side surface of the inner wall 123 of the inner wall 123 via grease so as to be able to transfer heat, and further, the inner side surface is connected to the inner side surface by brackets and screws (not shown). Fixed. Thereby, the heat generated by the coil 135 is transferred to the inner wall 123 through the grease, and the heat is released from the inner wall 123 to the vent hole X.
  • each of the heat generating components 136, 137, 138, and 139 has a surface below the coil 135, and one surface of the heat generating components 136, 137, 138, and 139 transmits heat to the inner surface of the casing 10 through the grease. Further, they are joined together and further fixed to the inner side surface by a bracket, a screw or the like (not shown). Alternatively, each of the heat generating components 136, 137, 138, and 139 is bonded and fixed so that one surface thereof can transfer heat to the inner surface via an adhesive. Thereby, the heat generated by the heat generating components 136, 137, 138, and 139 is transmitted to the bottom wall 121 via grease or adhesive, and the heat is released from the bottom wall 121 to the lower air passage below the bottom wall 121. .
  • the other parts 136, 137, 138, and 139 of the plurality of heat generating components 131 to 139 are attached to the surface of the bottom wall 121 on the inner side of the housing 10.
  • the heat of these heat generating components 136, 137, 138, and 139 is released to the outside of the housing 10 through the bottom wall 121.
  • the heat dissipation efficiency of the heat generating components 136, 137, 138, 139 disposed on the bottom wall 121 is improved, and the heat dissipation efficiency of the heat dissipation device as a whole is also improved. That is, not only the inner wall 123 but also the bottom wall 121 can be used as a heat radiating portion.
  • the heat generating components 131, 132, 133, 134, and 135 are fixed to the inner wall 123.
  • the inner wall 123 can be used also for uses other than a heat radiating part (use as a fixed part).
  • the surface of the inner wall 123 on the outer side is smoothly connected to the bottom surface of the bottom wall 121 (the surface on the opposite side to the inner side of the housing 10).
  • the lower part of the chimney part has an R shape. More specifically, in any cross section including the outer surface of the inner wall 123 and the bottom surface of the bottom wall 121, the outer surface and the inner surface are connected smoothly, that is, without a sharp portion.
  • FIGS. 9 and 10 a plurality of heat radiation fins (for example, heat radiation fins 124a and 124b) shown in FIGS. 9 and 10 are added to the contactless power supply device 1 of the first embodiment.
  • the supporting pillars 61 to 68 are not used, and the casing 10 is installed by bringing these fins into direct contact with the ground.
  • each of these fins is arranged on the bottom side of the bottom wall 121 (on the side opposite to the inside of the housing 10). More specifically, each of these fins is a plate-shaped member, and is formed so as to rise perpendicular to the bottom wall 121.
  • These fins are made of the same material as the bottom wall 121, and may be formed integrally with the bottom wall 121, or may be formed as separate members and then joined by welding or the like.
  • the heights of these fins are all the same. Therefore, when the non-contact power feeding device 1 is installed on a horizontal ground with these fins facing down, the bottom wall 121 is horizontal, and the thickness direction (direction perpendicular to the plate surface) of these fins is horizontal. Match.
  • these fins extends radially around the hole forming portion 121a and the vent hole X as shown in FIG.
  • the air in the lower air passage on the lower side of the bottom wall 121 flows into the vent hole X while the heat generating components 131 to 139 are energized, the air flows through the lower air passage along these fins.
  • the fins hardly interfere with the air in the lower air passage being sucked into the vent hole X.
  • heat generated by the heat generating components 136 to 139 attached to the bottom wall 121 by these fins is transmitted to these fins via the bottom wall 121 and further to the lower air passage, so that the heat transfer area is reduced. Rise. Therefore, the heat dissipation efficiency of the heat generating components 136, 137, 138, 139 disposed on the bottom wall 121 is further improved.
  • FIG. 11 is a cross-sectional view represented in the same format as FIG.
  • the structure of the component housing portion 12 is changed with respect to the contactless power supply device 1 of the first embodiment. Specifically, the overall shape of the component housing portion 12 is not changed, but the material is partially changed.
  • the whole of the bottom wall 121 and the outer wall 122 is made of a material having high thermal conductivity and high rigidity, as in the example of the first embodiment. It is made of a non-magnetic metal (for example, aluminum) that does not easily generate heat due to a change in magnetic flux generated.
  • a non-magnetic metal for example, aluminum
  • the inner wall 123 has a low thermal conductivity as a whole of the lower part 123a (corresponding to an example of a part of the chimney) continuous from the bottom wall 121, as in the example of the first embodiment.
  • Made of highly rigid material For example, it is made of a nonmagnetic metal (for example, aluminum) that does not easily generate heat due to a change in magnetic flux generated by the coil.
  • the upper portion 123b (corresponding to an example of the other portion of the chimney) connected to the lower portion 123a of the inner wall 123 and extending upward and connected to the top cover 11 is made of resin (for example, ABS resin). ).
  • the bonding method of the lower portion 123a and the upper portion 123b may be bonding using an adhesive, or other known bonding technique using a laser or the like.
  • the upper part 123b is made of resin, it is inferior to the lower part 123a in terms of rigidity and thermal conductivity.
  • the upper portion 123b made of resin is more advantageous than the lower portion 123a made of nonmagnetic metal. That is, as in the present embodiment, by using the resin near the upper outlet of the vent hole X in the chimney, heat generation of the component housing portion 12 due to the magnetic flux can be suppressed.
  • the heat generating components 131 to 135 attached to the inside of the housing 10 on the inner side wall 123 as illustrated in FIG. 11, at least a part of each is joined to the lower portion 123a. .
  • the heat generated in the heat generating components 131 to 135 is transferred to the lower portion 123a without passing through the upper portion 123b having a low thermal conductivity, and thus resin is used for the upper portion.
  • the entire top cover 11 of the present embodiment may be made of a nonmagnetic and nonconductive material such as resin or ceramic.
  • Each of the heat generating components 140 to 149 is joined below the heat generating components 131 to 134 so that heat can be transferred to a surface of the bottom wall 121 on the inner side of the housing 10 via grease, and is not shown. It is fixed to the inner surface with brackets and screws. Alternatively, each of the heat generating components 140 to 149 is bonded and fixed so that one surface can be transferred to the inner surface via an adhesive. As a result, the heat generated by the heat generating components 140 to 149 is transmitted to the bottom wall 121 via grease or adhesive, and the heat is released from the bottom wall 121 to the lower air passage below the bottom wall 121.
  • the heat generating components 136 to 149 (corresponding to another example of the plurality of heat generating components) are attached to the surface of the bottom wall 121 on the inner side of the housing 10. The heat of these heat generating components 136, 137, 138, and 139 is released to the outside of the housing 10 through the bottom wall 121.
  • the device 1 (corresponding to an example of a heat dissipation device) of the present embodiment is a device other than the non-contact power feeding device.
  • the device 1 may be a computer or a communication device.
  • a fifth embodiment Next, a fifth embodiment will be described with reference to FIGS.
  • the single vent X is formed in the devices 1 of the first to fourth embodiments
  • the non-contact power feeding device 1 of the present embodiment is formed with two vents Xc and Xd. .
  • the application of the contactless power supply device 1 of the present embodiment is the same as that of the first embodiment.
  • the casing 10 has a flat plate-like outer shape, and the thickness direction thereof is the vertical direction.
  • the housing 10 includes an upper surface cover 11 and a component housing portion 12.
  • the upper surface cover 11 is a flat plate-like member corresponding to the upper lid of the housing 10, and the upper surface of the upper surface cover 11 corresponds to the upper surface of the housing 10. Further, as shown in FIG. 14, the upper surface cover 11 is formed with two hole forming portions 111c and 111d surrounding a substantially rectangular cutout.
  • the materials and external dimensions of the top cover 11 and the component housing part 12 are the same as those in the first to fourth embodiments.
  • the component accommodating portion 12 is a member that accommodates a plurality of heat generating components 150 to 159 and a coil 135 (which is also a heat generating component), and is illustrated in FIGS. 15, 16, and 17.
  • the bottom wall 121, the outer wall 122, the inner side wall 123c, and the inner side wall 123d are provided.
  • the bottom wall 121 is a flat plate-like member corresponding to the bottom plate of the housing 10 and has substantially the same shape as the top cover 11.
  • the bottom surface of the bottom wall 121 corresponds to the bottom surface of the housing 10.
  • the bottom wall 121 has two hole forming portions 121 c and 121 d surrounding the substantially rectangular cutout equivalent to the hole forming portions 111 c and 111 c of the top cover 11. Is formed.
  • the bottom wall 121 is supported by support pillars 61 to 64 standing on the ground at the four corners of the bottom surface.
  • the housing 10 is installed on the ground via the support columns 61 to 64, and a lower air passage is formed between the bottom surface of the bottom wall 121 and the ground (that is, outside the bottom surface).
  • These support columns are members that form one lower air passage that communicates with both of the vent holes Xc and Xd.
  • the outer wall 122 is a member that extends upward from the outer edge of the bottom wall 121 around the entire outer edge of the bottom wall 121, and is formed integrally with the bottom wall 121.
  • the inner wall 123 c is a member that extends upward from the hole forming portion 121 c on the entire circumference of the hole forming portion 121 c of the bottom wall 121, and is formed integrally with the bottom wall 121.
  • the inner side wall 123d is a member extending upward from the hole forming portion 121d on the entire circumference of the hole forming portion 121d of the bottom wall 121, and is formed integrally with the bottom wall 121.
  • the component housing portion 12 When the upper surface cover 11 is joined to the component housing portion 12 with screws or the like, the component housing portion 12 is covered. At this time, the entire outer periphery of the bottom surface of the top cover 11 contacts the entire periphery of the upper end of the outer wall 122. At this time, the entire circumference of the bottom surface of the hole forming portion 111c of the top cover 11 and the entire circumference of the upper end of the inner wall 123c are in contact with each other. At this time, the entire periphery of the bottom surface of the hole forming portion 111d of the top cover 11 and the entire periphery of the upper end of the inner wall 123d are in contact with each other.
  • the inner wall 123c of the bottom wall 121 and the hole forming portion 111c of the top cover 11 form one chimney that forms one vent hole Xc penetrating from the plate-shaped bottom surface side of the housing 10 to the top surface side. (Corresponding to an example of a first chimney).
  • the inner wall 123d of the bottom wall 121 and the hole forming portion 111d of the top cover 11 form one ventilation hole Xd penetrating from the plate-shaped bottom surface side of the housing 10 to the top surface side.
  • a chimney (corresponding to an example of a second chimney) is configured.
  • the plate-shaped bottom surface of the housing 10 is the bottom surface of the bottom wall 121
  • the plate-shaped top surface of the housing 10 is the top surface of the top cover 11.
  • the plate-shaped bottom surface and top surface of the housing 10 are two surfaces that form the outer shape of the housing 10 and face each other in the thickness direction of the housing 10. In this way, the lower air passage through the bottom of the casing 10 communicates with the two pores Xc and Xd, and the space above the casing 10 has two vents Xc and Xd. Communicate.
  • each of the heat generating components 152 to 155 is joined to the inner side wall 123c of the inner wall 123c via grease so that heat can be transferred, and a bracket (not shown) And is fixed to the inner surface by screws or the like.
  • each of the heat generating components 152 to 155 is joined and fixed so that one surface can be transferred to the inner surface via an adhesive. Thereby, the heat generated by the heat generating components 152 to 155 is transmitted to the inner side wall 123c via grease or adhesive, and the heat is released from the inner side wall 123c to the vent hole Xc.
  • each of the heat generating components 156 to 159 is bonded to the inner side surface of the inner wall 123d of the inner wall 123d through grease so as to be able to transfer heat, and is further connected to the inner side by brackets, screws, and the like (not shown). It is fixed to the surface.
  • each of the heat generating components 156 to 159 is bonded and fixed so that one surface can be transferred to the inner surface via an adhesive. Thereby, the heat generated by the heat generating components 156 to 159 is transmitted to the inner side wall 123d via the grease or the adhesive, and the heat is released from the inner side wall 123d to the vent hole Xd.
  • the coil 135 is wound around the inner wall 123c and the inner wall 123d below the heat generating components 153 to 159.
  • the inner peripheral side of the coil 135 is joined to the inner side surface of the casing 10 through the grease so that heat can be transferred to the inner side wall 123c, 123d. Fixed to the surface. Thereby, the heat generated by the coil 135 is transmitted to the inner side walls 123c and 123d through the grease, and the heat is released from the inner side walls 123c and 123d to the vent holes Xc and Xd.
  • some of the plurality of heat generating components 135 and 150 to 159 are attached to the inner surface of the housing 10 among the inner side walls 123c and 123d.
  • the heat of the heat generating components 135 and 153 to 159 is released to the outside of the housing 10 through the inner side walls 123c and 123d.
  • each of the heat generating components 150 and 151 is joined to a surface of the bottom wall 121 on the inner side of the casing 10 via grease so that heat can be transferred below the coil 135. Further, it is fixed to the inner surface by a bracket, a screw or the like (not shown). Alternatively, each of the heat generating components 150 and 151 is bonded and fixed so that one surface can transfer heat to the inner surface via an adhesive. Thereby, the heat generated by the heat generating components 150 and 151 is transmitted to the bottom wall 121 via grease or adhesive, and the heat is released from the bottom wall 121 to the lower air passage below the bottom wall 121.
  • the other parts 150 and 151 of the plurality of heat generating components 135 and 150 to 159 are attached to the surface of the bottom wall 121 on the inner side of the housing 10. The heat of these heat generating components 150 and 151 is released to the outside of the housing 10 through the bottom wall 121.
  • the chimney portion that forms the vent holes Xc and Xd not only the chimney portion that forms the vent holes Xc and Xd but also the bottom surface is formed in the casing 10 in which the length (height) in the thickness direction of the vent holes Xc and Xd cannot be sufficiently obtained.
  • the heat generating components 150 and 151 are also attached to the bottom wall 121 to be performed.
  • the heat dissipation efficiency of the heat generating components 150 and 151 disposed on the bottom wall 121 is also improved, and the heat dissipation efficiency of the heat dissipation device as a whole is also improved. That is, not only the inner side walls 123c and 123c but also the bottom wall 121 can be used as a heat radiating portion.
  • the heat generating components 135 and 152 to 159 are fixed to the inner side walls 123c and 123d.
  • inner wall 123c, 123d can be used also for uses other than a thermal radiation part (use as a fixing
  • the heat radiation efficiency of the heat radiation portion can be increased and the heat radiation efficiency can be improved by the chimney effect.
  • vent hole Xc corresponds to an example of a first vent hole
  • vent hole Xd corresponds to an example of a second vent hole
  • the chimney part forming the vent hole Xc corresponds to an example of the first chimney part
  • the chimney part forming the vent hole Xd corresponds to an example of the second chimney part.
  • the inner peripheral seal member 125 is an elastic member (packing) such as rubber, and is embedded in a groove formed in the upper end portion of the inner wall 123.
  • the inner peripheral seal member 125 contacts the bottom surface of the hole forming portion 111. Thereby, the inner peripheral seal member 125 can seal the gap between the inner wall 123 and the hole forming portion 111, and water or the like can be prevented from entering the housing 10 through this gap.
  • the outer peripheral seal member 126 is an elastic member (packing) such as rubber, and is embedded in a groove formed in the upper end portion of the outer wall 122.
  • the outer peripheral seal member 126 contacts the bottom surface of the outer edge portion of the top cover 11. Thereby, the outer periphery sealing member 126 can seal the gap between the outer wall 122 and the upper surface cover 11, and water or the like can be prevented from entering the housing 10 through this gap.
  • FIG. 20 is a cross-sectional view represented in the same format as FIG. In the present embodiment, as shown in FIG. 20, the shape of the inner wall 123 is changed with respect to the non-contact power feeding device 1 of the first embodiment.
  • the outer (outside of the housing 10 inside) surface of the inner wall 123 of this embodiment is the same as the inner wall 123 of the first embodiment, and the bottom surface of the bottom wall 121 (opposite of the inside of the housing 10). Smoothly connected to the side surface). That is, the lower part of the chimney part has an R shape.
  • the outer surface and the inner surface are smoothly connected, that is, without a sharp portion.
  • the outer surface of the inner wall 123 and the bottom surface of the bottom wall 121 of this embodiment are connected with a gentler curve than in the first embodiment. That is, the maximum value of the Gaussian curvature at the connection portion between the outer surface of the inner wall 123 and the bottom surface of the bottom wall 121 is smaller in the present embodiment than in the first embodiment.
  • the maximum value of the Gaussian curvature at the connection portion between the outer surface of the inner wall 123 and the bottom surface of the bottom wall 121 is, for example, 400 [m ⁇ 2 ] in the present embodiment.
  • FIG. 21 is a cross-sectional view represented in the same format as FIG.
  • the shape of the bottom wall 121 is changed with respect to the non-contact electric power feeder 1 of 1st Embodiment.
  • the bottom wall 121 of the present embodiment is configured such that a part of its bottom surface rises as it approaches the inner wall 123 (closer to the upper surface of the top cover 11).
  • the bottom surface of the inner wall 123 in the portion has a shape obtained by cutting off the upper end of a quadrangular pyramid having one point in the vent X as a vertex.
  • the bottom wall 121 and the inner wall 123 are not smooth and are connected with a sharp point as a boundary, but as smoothly as in the seventh embodiment. It may be connected.
  • a ninth embodiment Next, a ninth embodiment will be described.
  • a chimney fin 127 is added to the non-contact power feeding device 1 of the first embodiment.
  • the chimney fin 127 is a heat radiating fin attached in contact with the inner wall 123 in the vent hole X.
  • the chimney fin 127 has a shape that looks like a mesh when viewed from the direction penetrating the vent hole X, and has a plurality of small holes that penetrate the vent hole X from the bottom surface side to the top surface side of the housing 10. It has a honeycomb shape that is divided into rooms.
  • the entire chimney fin 127 is made of a material having high thermal conductivity and high rigidity, similar to the inner wall 123, for example, a non-magnetic metal (for example, copper, aluminum, etc.) that does not easily generate heat due to a change in magnetic flux generated by the coil. , Austenitic stainless steel) or a magnetic metal (for example, iron).
  • the chimney fin 127 may be formed integrally with the inner wall 123 or may be formed as a separate member.
  • FIG. 24 is a cross-sectional view represented in the same format as FIG.
  • the device 1 (corresponding to an example of a heat dissipation device) of the present embodiment is different from the non-contact power supply device 1 of the first embodiment in the housing 10 in place of the heat generating components 131 to 135, 161, 162, 163 and heat spreaders 201, 202 are additionally arranged.
  • Each of the heat spreaders 201 and 202 corresponds to an example of a heat transfer member.
  • the heat spreaders 201 and 202 are made of a plate-shaped material having high thermal conductivity, and may be made of, for example, a non-magnetic metal (for example, copper, aluminum, austenitic stainless steel), or a magnetic metal (for example, Iron).
  • a non-magnetic metal for example, copper, aluminum, austenitic stainless steel
  • a magnetic metal for example, Iron
  • Each of the heat spreaders 201 and 202 is joined to the inner side surface of the inner wall 123 of the inner wall 123 through grease so that heat can be transferred, and further to the inner side surface by brackets and screws (not shown). Fixed.
  • each of the heat spreaders 201 and 202 is bonded and fixed so that the side surface of the heat spreaders 201 and 202 can be transferred to the inner surface via an adhesive.
  • the heat spreaders 201 and 202 may be formed integrally with the inner wall 123.
  • Heat generating parts (mounting parts) 160, 161, 162, and 163 are elements that generate heat when energized, equivalent to the heat generating parts 131 to 134.
  • each surface of each of the heat generating parts 160 and 161 is joined to the upper surface of the heat spreader 202 via grease so as to be able to transfer heat, and is further fixed to the upper surface by a bracket, a screw or the like (not shown).
  • each of the heat generating components 160 and 161 is bonded and fixed so that one surface can be transferred to the upper surface via an adhesive. Thereby, the heat generated by the heat generating components 160 and 161 is transmitted to the inner wall 123 through the heat spreader 202, and the heat is released from the inner wall 123 to the vent hole X.
  • each surface of each of the heat generating parts 162 and 163 is joined to the upper surface of the heat spreader 201 via grease so as to be able to transfer heat, and is further fixed to the upper surface by a bracket, a screw or the like (not shown).
  • each of the heat generating components 162 and 163 is bonded and fixed so that one surface can be transferred to the upper surface via an adhesive. Thereby, the heat generated by the heat generating components 162 and 163 is transmitted to the inner wall 123 via the heat spreader 201, and the heat is released from the inner wall 123 to the vent hole X.
  • the heat generating components 160 and 161 are indirectly attached and fixed to the inner side surface of the inner side wall 123 through the heat spreader 202 so that heat can be transferred. Further, the heat generating components 161 and 162 are indirectly attached and fixed to the inner side surface of the inner wall 123 through the heat spreader 201 so that heat can be transferred.
  • the upper heat generating components 160 to 163 can be attached to the heat spreaders 201 and 202. . In this way, the heat generated in the upper heat generating components 160 to 163 is released to the chimney through the heat spreaders 201 and 202 and the inner wall 123, so that natural convection due to the chimney effect is promoted to dissipate heat. The effect can be enhanced.
  • the apparatus 1 of this embodiment is not provided with the coil 135, it is another apparatus which is not a non-contact electric power supply apparatus, however, The structure using the heat spreaders 201 and 202 like this embodiment is non-contact electric power supply. It is also applicable to the device. (Eleventh embodiment) Next, an eleventh embodiment will be described. In the present embodiment, as shown in FIGS. 25 and 26, a chimney fan 128 is added to the non-contact power feeding apparatus 1 of the first embodiment.
  • the chimney fan 128 is mounted in the vent hole X, and rotates by receiving power supply from a power source (not shown), thereby generating an updraft in the vent hole X and increasing the air in the vent hole X. It is a blower fan that promotes. The chimney fan 128 further increases the speed of the air in the ventilation hole X, and as a result, the heat dissipation efficiency is improved.
  • a twelfth embodiment Next, a twelfth embodiment will be described.
  • plasma actuators 211 to 214 are added to the non-contact power feeding apparatus 1 of the first embodiment as shown in FIGS.
  • the plasma actuators 211 to 214 are fixed to the bottom wall 121 with, for example, an adhesive.
  • the plasma actuator 212 includes a plate-like 212a made of a dielectric material such as resin or ceramic, and a back electrode 212b and a surface electrode 212c that sandwich the insulator 212a from both surfaces.
  • the back electrode 212b is disposed on the upper surface side (side closer to the bottom wall 121) of both surfaces (upper surface and bottom surface) of the insulator 212a.
  • the surface electrode 212c is disposed on the bottom surface side (the side far from the bottom wall 121) of the insulator 212a.
  • an AC power source (not shown) is connected to the front surface electrode 212c and the back surface electrode 212b to generate an AC electric field, so that the edge of the surface electrode 212c extends along the surface of the insulator 212a.
  • a plasma jet is generated.
  • the plasma jet generated in this manner induces ambient air and generates an air flow in the same direction as the plasma jet. Therefore, by supplying the front electrode 212c and the back electrode 212b alternating current of the plasma actuator 212, an air flow that guides air in the direction of the vent hole X is generated in the lower air passage for the arrow in FIG.
  • the plasma actuator 214 if the insulator 212a, the back electrode 212b, and the front electrode 212c are replaced with the insulator 214a, the back electrode 214b, and the front electrode 214c.
  • the same can be said for the plasma actuator 213 if the insulator 212a, the back electrode 212b, and the front electrode 212c are replaced with the insulator 213a, a back electrode and a front electrode 213c (not shown).
  • the present embodiment is that a canopy 203 (corresponding to an example of a cover member) is added to the non-contact power feeding apparatus 1 of the first embodiment.
  • the canopy 203 includes a main body 203a on a flat plate that does not allow air to pass through and rod-like columns 203b and 203c.
  • the main body 203a is disposed at a position covering the upper surface side of the vent hole X from above, and is supported by the columns 203b and 203c.
  • the main body 203a is disposed above the upper surface cover 11 by this support. As a result, the air flowing from the bottom to the top through the vent hole X hits the main body 203a and flows out of the housing 10 through the gap between the main body 203a and the top cover 11 as shown by the arrows.
  • the canopy 203 may be detachable from the housing 10 or may have a mechanism capable of opening and closing the main body 203a.
  • the net 204 is fixed to the hole forming part 111 at the upper end of the air hole X, and is disposed so as to cover and close the air hole X.
  • the possibility of foreign matters entering the air hole X can be reduced.
  • the inside of the vent hole X becomes high temperature, it is possible to reduce the possibility that a person puts a part of the body (for example, a finger) into the vent hole X.
  • the net 204 may be detachable from the housing 10 or may have a mechanism that allows the net 204 to be opened and closed. (Fifteenth embodiment) Next, a fifteenth embodiment is described.
  • the difference in heat generation characteristics between the heat generating components 131 to 135 attached to the inner wall 123 and the heat generating components 136 to 139 attached to the bottom wall 121 is more specific than the contactless power supply device 1 of the first embodiment. It is a thing.
  • the measured temperatures of the heat generating components 131 to 139 increase in this order.
  • the measurement temperature is measured as follows. First, when the non-contact power feeding device 1 is installed in a thermostat (for example, a thermostat set at 25 ° C.) and the rated maximum current is continuously supplied to each of the heat generating components 136 to 139 for 2 hours, (1) The temperature of the back side surface of the inner wall 123 where the heat generating component 131 is attached (2) The temperature of the back side surface of the inner wall 123 where the heat generating component 132 is attached (3) The temperature of the back side surface of the inner wall 123 where the heat generating component 133 is attached (4) The temperature of the back side surface of the inner wall 123 where the heat generating component 134 is attached (5) The coil 135 of the inner wall 123 The temperature of the back side of the attached portion (6) The temperature of the back side of the portion of the inner wall 123 where the heat generating component 136 is attached (7) The portion of the inner wall 123 where the heat generating component 137 is attached Side surface temperature (8) Temperature of the back side surface of the inner wall 123 where the heat
  • the measured temperature is a higher index for a heating element that tends to be higher in temperature. Note that the above-mentioned two hours are defined with the intention of a time sufficient to reach an equilibrium state in which heat generation and heat release are balanced in the non-contact power feeding device 1.
  • the measured temperature of each of the heat generating components 136 to 139 is higher than the measured temperature of the heat generating components 136 to 139, regardless of which one of the measured temperatures of the heat generating components 131 to 135 is taken. It has become.
  • the temperature of the ventilation hole X can be effectively increased as compared with the case where it is not so, so that the chimney effect becomes stronger. As a result, the heat dissipation efficiency of the non-contact power feeding device 1 is increased.
  • switching elements may be used as the heat generating components 131 to 134, and filter circuits may be used as the heat generating components 136 to 139, for example. .
  • the heat generating component is a component that generates heat when energized (that is, an electronic component).
  • the heat generating component is not limited to one that generates heat when energized, but may generate heat due to any factor. There may be.
  • the space in the interior of the housing 10 may be filled with a potting material.
  • the housing 10 has two chimneys and ventilation holes.
  • the housing 10 further has three or more chimneys and ventilation holes. It may be.
  • a part of the heat generating component is attached to the inner surface of the casing 10 of the chimney, and the heat of the part of the heat generating component is You may discharge
  • the support pillars 61 to 68 may be formed as separate members separated from the housing 10 as in the above embodiment, or may be formed integrally with the housing 10.

Abstract

L'invention porte sur un dispositif dissipateur de chaleur qui est équipé d'un boîtier (10) ayant une forme extérieure du type plaque, et d'une pluralité de composants émetteurs de chaleur (131-163) qui sont logés à l'intérieur du boîtier et sont susceptibles d'émettre de la chaleur. Le boîtier comporte une première partie cheminée (111, 123, 111c, 123c) formant un premier trou traversant (X, Xc) qui passe d'un côté à l'autre côté entre deux surfaces en regard l'une de l'autre dans la direction de l'épaisseur du boîtier, et une paroi inférieure (121) qui forme la surface inférieure au niveau de l'une des deux surfaces du boîtier. Certains des composants émetteurs de chaleur sont fixés à des surfaces côté intérieur de boîtier de la première partie cheminée, et la chaleur de ces composants émetteurs de chaleur est évacuée dans le premier trou traversant par l'intermédiaire de la première partie cheminée. D'autres des composants émetteurs de chaleur, différents des composants émetteurs de chaleur susmentionnés, sont fixés à la surface côté intérieur de boîtier de la paroi inférieure, et la chaleur de ces autres composants émetteurs de chaleur est évacuée à l'extérieur du boîtier à travers la paroi inférieure.
PCT/JP2016/001231 2015-03-13 2016-03-08 Dispositif dissipateur de chaleur WO2016147598A1 (fr)

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JP2015050940A JP6558001B2 (ja) 2015-03-13 2015-03-13 放熱装置
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FR3103623A1 (fr) * 2019-11-26 2021-05-28 Renault S.A.S Chargeur pour véhicule électrique ou hybride.
CN113165535A (zh) * 2018-09-28 2021-07-23 庞巴迪无接触运行有限责任公司 一种用于冷却感应功率传输垫的方法及其系统
WO2022258367A1 (fr) * 2021-06-11 2022-12-15 Mahle International Gmbh Ensemble plancher pour un dispositif de charge inductive
WO2023186365A1 (fr) * 2022-03-29 2023-10-05 Mahle International Gmbh Ensemble fond fixe pour un dispositif de charge inductive

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JP7087664B2 (ja) * 2018-05-17 2022-06-21 株式会社Ihi コイル装置
JP7061050B2 (ja) * 2018-09-13 2022-04-27 エレコム株式会社 ワイヤレス充電器
EP3863047A4 (fr) * 2018-10-05 2021-11-10 Nissan Motor Co., Ltd. Appareil de refroidissement

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CN112272506A (zh) * 2020-11-24 2021-01-26 南京博寰机电设备有限公司 一种建筑弱电系统用快速散热的电源稳定装置
CN112272506B (zh) * 2020-11-24 2022-07-05 南京博寰机电设备有限公司 一种建筑弱电系统用快速散热的电源稳定装置
WO2022258367A1 (fr) * 2021-06-11 2022-12-15 Mahle International Gmbh Ensemble plancher pour un dispositif de charge inductive
WO2023186365A1 (fr) * 2022-03-29 2023-10-05 Mahle International Gmbh Ensemble fond fixe pour un dispositif de charge inductive

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