WO2019181423A1

WO2019181423A1 - Radiating member and radiative heating element equipped therewith

Info

Publication number: WO2019181423A1
Application number: PCT/JP2019/007982
Authority: WO
Inventors: 清水　隆男
Original assignee: 信越ポリマー株式会社
Priority date: 2018-03-23
Filing date: 2019-03-01
Publication date: 2019-09-26
Also published as: CN213343089U; JP7030586B2; JP2019169603A

Abstract

[Problem] To provide a radiating member capable of easily coping with a more densely packed heating element and showing high radiation performance, and a radiative heating element equipped therewith. [Solution] The present invention relates to a radiating member 1 capable of being mounted to a heating element and extending and contracting in the longitudinal direction thereof, and a radiative heating element 50 equipped therewith, the radiating member 1 being provided with, in a string-shaped or ring-shaped main body 2 including, in a rubber-like elastic body 10, a heat conducting material 30 having higher heat conductivity than the rubber-like elastic body 10, a penetration part 4 leading from an interior space 3 penetrating in the longitudinal direction of the main body to the outside of the main body 2 at a side surface 5 other than a surface in the longitudinal direction of the main body 2.

Description

Heat dissipating member and heat dissipating heating element with the heat dissipating member

Cross reference

This application claims priority based on Japanese Patent Application No. 2018-055965 filed in Japan on March 23, 2018, the contents of which are incorporated herein by reference. Moreover, the content described in the patent quoted in this application, a patent application, and literature is used for this specification.

The present invention relates to a heat dissipating member that promotes heat dissipation from the heat generating element and a heat dissipating heat generating element in a state in which the heat dissipating element is mounted on the heat generating element.

Control systems for automobiles, aircraft, ships, and home or commercial electronic devices have become more accurate and complex, and along with this, the integration density of small electronic components on circuit boards has been increasing. . As a result, it is strongly desired to solve the failure and shortening of the life of electronic components due to the heat generation around the circuit board.

In order to realize quick heat dissipation from the circuit board, conventionally, the circuit board itself is made of a material with excellent heat dissipation, and a means such as attaching a heat sink or driving a cooling fan is combined singly or in combination. Has been done. Among these, the method of configuring the circuit board itself from a material having excellent heat dissipation, such as diamond, aluminum nitride (AlN), cBN, etc., increases the cost of the circuit board extremely. In addition, the arrangement of the cooling fan causes problems such as failure of a rotating device called a fan, necessity of maintenance for preventing the failure, and securing of installation space. On the other hand, the heat radiation fin can easily increase heat dissipation by increasing the surface area by forming a large number of columnar or flat projections using a metal having high thermal conductivity (for example, aluminum). Therefore, it is widely used as a heat dissipating component (see Patent Document 1).

By the way, for the purpose of reducing the burden on the global environment, the movement to gradually convert conventional gasoline cars or diesel cars into electric cars is becoming active all over the world. In particular, in addition to European countries such as France, the Netherlands, and Germany, electric cars have become popular in China in recent years. The widespread use of electric vehicles has problems such as the development of high-performance batteries and the installation of numerous charging stations. In particular, technological development for enhancing the charge / discharge function of lithium-based automobile batteries has become a major issue. It is well known that the above-mentioned automobile battery cannot sufficiently perform the charge / discharge function at a high temperature of 60 degrees Celsius or higher. For this reason, as with the circuit board described above, it is important to improve the heat dissipation of the battery.

In addition, electrolytic capacitors are indispensable for the spread of electric vehicles and control circuits for power supplied to infrastructure other than automobiles. Electrolytic capacitors are often used in inverters, converters, computers used for signal control and arithmetic processing. Unlike a capacitor mounted on a small electronic device, this type of capacitor is large and generates a large amount of heat.

JP2008-243999A

In the future, it will be difficult to use conventional heat sinks, considering the situation where the density of electronic components on circuit boards is increasing, the situation where electrolytic capacitors are densely packed, or the situation where the need to further promote heat dissipation from batteries increases. . For this reason, the heat radiating member corresponding to the densification of the heat generating body which is heat dissipation object, and higher heat dissipation is strongly desired.

The present invention has been made in view of the above-described problems, and provides a heat dissipating member that can easily cope with the densification of heat generating elements and can exhibit high heat dissipation, and a heat dissipating heat generating element equipped with the heat dissipating heat element. With the goal.

(1) A heat dissipating member according to an embodiment for achieving the above object is a heat dissipating member that can be attached to a heating element and can be expanded and contracted in a length direction thereof. In a string-like or ring-shaped main body including a heat conductive material having high heat conductivity, a penetrating portion that leads from the inner space penetrating in the length direction to the outside of the main body is formed on a side surface other than the length-direction surface of the main body. Prepare.

(2) In the heat radiating member according to another embodiment, preferably, the main body has a form in which a flat plate is advanced spirally in the length direction of the main body.

(3) In the heat radiating member according to another embodiment, preferably, the main body has a tube shape.

(4) In the heat dissipating member according to another embodiment, preferably, the main body is disposed on the inner side or the outer side of the first layer including a heat conductive material in a rubber-like elastic body and is heated more than the first layer. And at least a second layer having excellent conductivity.

(5) In the heat dissipation member according to another embodiment, preferably, the second layer is a layer mainly composed of metal, or a layer containing ceramics or graphite.

(6) A heat dissipating heat generating element according to an embodiment has a configuration in which any of the heat dissipating members described above is mounted on the heat generating element.

(7) In the heat dissipating heat generating element according to another embodiment, preferably, the main body of the heat dissipating member is configured in a ring shape, and the heat dissipating member is mounted in a ring shape on the surface of the heat generating element.

(8) In the heat dissipating heat generating element according to another embodiment, preferably, the main body of the heat dissipating member is formed in a string shape, and the heat dissipating member is mounted so as to be wound around the surface of the heat generating element.

(9) In the heat dissipating heating element according to another embodiment, preferably, the heating element is a capacitor or a battery cell.

According to the present invention, it is possible to provide a heat dissipating member that can easily cope with the denseness of the heat generating elements and can exhibit high heat dissipation, and a heat dissipating heat generating element on which the heat dissipating elements are mounted.

FIG. 1A shows a plan view of a heat dissipation member according to the first embodiment and an enlarged side view of a portion between arrows AA in the plan view. FIG. 1B shows a perspective view of a modification of the heat dissipating member of FIG. 1A. FIG. 2A shows an enlarged side view similar to FIG. 1A of a modified example of the main body constituting the two types of heat dissipating members of FIGS. 1A and 1B. FIG. 2B shows an enlarged side view similar to FIG. 1A of a modification of the main body constituting the two types of heat radiation members of FIGS. 1A and 1B. FIG. 2C shows an enlarged side view similar to FIG. 1A of a modification of the main body constituting the two types of heat dissipating members of FIGS. 1A and 1B. FIG. 2D shows an enlarged side view similar to FIG. 1A of a modified example of the main body constituting the two types of heat dissipating members of FIGS. 1A and 1B. FIG. 3A shows a perspective view of a heat dissipation member according to the second embodiment and an enlarged side view of a portion between arrows AA in the perspective view. FIG. 3B shows a perspective view of a modification of the heat dissipating member of FIG. 3A and an enlarged side view of a portion between arrows AA in the perspective view. 4A shows a perspective view of a part of a heat radiating member according to a modification in which the second layer is provided on the main body of FIGS. 3A and 3B and a right side view of the heat radiating member as viewed from one end direction. 4B shows a perspective view of a part of a heat radiating member according to a modification in which the second layer is provided on the main body of FIGS. 3A and 3B and a right side view of the heat radiating member as viewed from one end direction. FIG. 5A shows a perspective view of the heat dissipating heating element according to the first embodiment of the present invention. FIG. 5B shows a perspective view of the heat dissipating heating element according to the first embodiment of the present invention. FIG. 6A shows a perspective view of a heat dissipating heating element according to the second embodiment of the present invention. FIG. 6B shows a perspective view of a heat dissipating heating element according to the second embodiment of the present invention. FIG. 7 shows a perspective view and an enlarged view of a part B of the heat dissipating heating element according to the third embodiment of the present invention.

1, 1a, 1b, 1c ... heat dissipation member, 2, 2b, 2b ', 2b' ', 2c ... main body, 3 ... inner space, 4 ... gap (an example of a penetration part), 5・・・ Side surface 10, 10b, 10c ・・・ Rubber elastic body, 12 ・・・ Through hole (an example of a penetration part), 15, 15b ・・・ First layer, 20, 20b ・・・ Second layer , 30... Thermal conductive material, 40... Electrolytic capacitor (capacitor, example of heating element), 41... Outer surface (surface), 50, 50 a, 50 b, 50 c. ... battery cells (an example of a heating element), 61 to 64 ... outer side surface (surface), 70 ... a heat dissipating heating element.

Next, each embodiment of the present invention will be described with reference to the drawings. The embodiments described below do not limit the invention according to the claims, and all the elements and combinations thereof described in the embodiments are the means for solving the present invention. It is not always essential.

1. Heat dissipation member (first embodiment)
FIG. 1A shows a plan view of a heat dissipation member according to the first embodiment and an enlarged side view of a portion between arrows AA in the plan view. FIG. 1B shows a perspective view of a modification of the heat dissipating member of FIG. 1A.

The heat dissipating member 1 according to the first embodiment is a heat dissipating member that can be attached to a heating element and can expand and contract in its length direction. The heat radiating member 1 has a ring-shaped main body 2 including a rubber-like elastic body 10 and a heat conductive material 30 having higher heat conductivity than the rubber-like elastic body 10. The heat radiating member 1 includes a gap (an example of a penetrating portion) 4 that leads from the inner space 3 penetrating in the length direction of the main body 2 to the outside of the main body 2 on the side surface 5 other than the length direction of the main body 2.

The main body 2 of the heat dissipation member 1 preferably has a form in which a flat plate is spirally advanced in the length direction of the main body 2. In this embodiment, the main body 2 is preferably disposed on the inner side of the first layer 15 including the rubber-like elastic body 10 and the heat conducting material 30, and more thermally conductive than the rubber-like elastic body 10. And at least the second layer 20 having excellent properties. As will be described later, the arrangement of the first layer 15 and the second layer 20 may be reversed, and the second layer 20 may be provided outside the first layer 15. Further, a layer other than the first layer 15 and the second layer 20 may be provided in the main body 2.

The rubber-like elastic body 10 is preferably a thermosetting elastomer such as silicone rubber, urethane rubber, isoprene rubber, ethylene propylene rubber, natural rubber, ethylene propylene diene rubber, nitrile rubber (NBR) or styrene butadiene rubber (SBR); It is configured to include a thermoplastic elastomer such as urethane, ester, styrene, olefin, butadiene, fluorine, polyamide such as nylon (registered trademark), or a composite thereof. Further, the rubber-like elastic body 10 may be a material containing a resin harder than the rubber or the like. For example, polyphenylene sulfide (PPS), polyetheretherketone (PEEK), polyamideimide (PAI) and the like can be suitably exemplified. The rubber-like elastic body 10 is preferably made of a material having high heat resistance that can maintain its form without being melted or decomposed by heat from the heat-generating body that is a heat dissipation target.

The heat conductive material (also referred to as a heat conductive filler) 30 is preferably a metal, a carbon-based material, or ceramics. Examples of the metal include aluminum, an aluminum alloy, iron, an iron alloy, copper, a copper alloy, and SUS. Examples of ceramics include metal oxides, hydroxides, and nitrides. Examples of more preferable materials for ceramics include alumina, aluminum hydroxide, aluminum nitride, hBN, cBN, and silicon carbide. Examples of the carbon-based material include diamond, diamond-like carbon, amorphous carbon, and graphite. The thermal conductive material 30 may be included in any ratio with respect to the total volume of the first layer 15 as long as there is no problem in manufacturing the first layer 15, but preferably in the range of 2 to 70% by volume. It is. The heat conductive material 30 in FIG. 1A is 2 to 10 volumes with respect to the entire volume of the first layer 15.

The second layer 20 is a layer mainly composed of metal. Examples of the metal include aluminum, an aluminum alloy, iron, an iron alloy, copper, a copper alloy, and SUS. The second layer 20 is preferably a metal having a higher thermal conductivity than the first layer 15. The second layer 20 may be a layer containing a carbon-based material instead of or together with the metal. Examples of the carbon-based material include the same materials as the carbon-based material that can be used for the heat conductive material 30. The metal or carbon-based material may be a material constituting the entire second layer 20 or may be a material constituting a part thereof. In the case where the metal or the carbon-based material is a part of the material constituting the second layer 20, for example, cellulose or resin that is a raw material of paper and a metal or carbon-based material are mixed and formed into a sheet shape, The second layer 20 may be manufactured.

When the main body 2 of the heat radiating member 1 is formed in a spiral shape, a spiral gap 4 is formed on the side surface 5 of the main body 2. The gap 4 is a part that communicates with the inner space 3 from the side surface 5 located outside the main body 2. For this reason, both the inner side and the outer side of the main body 2 can be used for heat dissipation. Moreover, when the 1st layer 15 located in the outer surface of the heat radiating member 1 is comprised with the rubber-like elastic body 10, when the annular heat radiating member 1 is fitted on the outer side of the heat generating body, the heat generating body and the heat radiating member 1 It becomes easy to adhere to the outer surface. For this reason, it is possible to reduce the thermal resistance between the heat radiating member 1 and the heating element (= the property of hindering heat conduction). Furthermore, since the spiral main body 2 has high stretchability, the size of the heating element can be reduced without restriction or reduced.

The heat radiating member 1a shown in FIG. 1B is different from the heat radiating member 1 shown in FIG. 1A in that it has a string shape and has end portions (may be referred to as end faces) in the length direction. Like the heat radiating member 1, the heat radiating member 1 a has a form in which a flat plate in which the first layer 15 and the second layer 20 are stacked is advanced in the length direction of the main body 2 in a spiral shape. In addition, you may attach the member which couple | bonds both ends to the length direction both ends of the main body 2 of the thermal radiation member 1a. Thus, the form of the heat radiating members 1 and 1a may be not only a closed ring but also a string-like form with an open ring.

FIG. 2A shows an enlarged side view similar to FIG. 1A of a modified example of the main body constituting the two heat dissipating members of FIGS. 1A and 1B. FIG. 2B shows an enlarged side view similar to FIG. 1A of a modified example of the main body constituting the two types of heat dissipating members of FIGS. 1A and 1B. FIG. 2C shows an enlarged side view similar to FIG. 1A of a modification of the main body constituting the two types of heat dissipating members of FIGS. 1A and 1B. FIG. 2D shows an enlarged side view similar to FIG. 1A of a modified example of the main body constituting the two types of heat dissipating members of FIGS. 1A and 1B.

The main body 2 shown in FIG. 2A has a volume% of the heat conductive material 30 occupying the first layer 15 larger than that of the main body 2 shown in FIG. 1A and FIG. 1B are enlarged side views similar to FIG. 1A of a modified example of the main body constituting the two types of heat radiation members of FIG. 1A. FIG. 2B shows an enlarged side view similar to FIG. 1A of a modification of the main body constituting the two types of heat radiation members of FIGS. 1A and 1B. The main body 2 shown in FIG.

The main body 2 shown in FIG. 2B has a volume% of the heat conductive material 30 in the first layer 15 larger than that of the main body 2 shown in FIG. Common to the main body 2 shown.

The main body 2 shown in FIG. 2C is the same as the main body 2 shown in FIG. 2A except that the main body 2 includes only the first layer 15 in FIG. 2A and does not include the second layer 20. Thus, the heat radiating members 1, 1 a may include the main body 2 configured only from the first layer 15 including the rubber-like elastic body 10 and the heat conductive material 30. As in FIG. 2B or FIG. 1A, the heat conductive material 30 may be within a range of 31 to 70% by volume or 2 to 10% by volume with respect to the first layer 15.

The main body 2 shown in FIG. 2D is a first layer containing a metal, a carbon-based material, or both on the outside by reversing the material of the first layer 15 and the material of the second layer 20 of the main body 2 shown in FIG. 2A. 15 and a second layer 20 containing the rubber-like elastic body 10 and the heat conducting material 30 is provided inside. Even in this case, the gap 4 penetrates the second layer 20 and the first layer 15 and communicates the outside and the inner space 3 as in FIG. 2A.

(Second Embodiment)
Next, the heat radiating member according to the second embodiment will be described. Portions common to the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

FIG. 3A shows a perspective view of a heat dissipation member according to the second embodiment and an enlarged side view of a portion between arrows AA in the perspective view. FIG. 3B shows a perspective view of a modification of the heat dissipating member of FIG. 3A and an enlarged side view of a portion between arrows AA in the perspective view.

The heat dissipating member 1b according to the second embodiment is a heat dissipating member that can be attached to a heating element and can expand and contract in the length direction. The heat radiating member 1b shown in FIG. 3A has a ring-shaped main body 2b including a rubber-like elastic body 10b and a heat conductive material 30 having higher heat conductivity than the rubber-like elastic body 10b. The heat dissipating member 1b includes a through hole (an example of a penetrating portion) 12 that communicates from the inner space 3 penetrating in the length direction of the main body 2b to the outside of the main body 2b on the side surface 5 other than the lengthwise surface of the main body 2b. The main body 2b has a tube shape. The through hole 12 is a part that communicates with the inner space 3 from the side surface 5 located outside the main body 2b. For this reason, both inner and outer surfaces of the main body 2b can be used for heat dissipation. The rubber-like elastic body 10b is made of the same material as the rubber-like elastic body 10 in the first embodiment.

Further, by configuring the entire main body 2b of the heat radiating member 1b with the rubber-like elastic body 10b, the heat generating body and the outer surface of the heat radiating member 1b are brought into close contact with each other when the annular heat radiating member 1b is fitted to the outside of the heat generating body. It becomes easy. For this reason, the thermal resistance between the heat radiating member 1b and a heat generating body can be reduced. Furthermore, since the main body 2b has elasticity, the size of the heating element can be reduced without restriction or reduced.

The heat radiating member 1c shown in FIG. 3B is different from the heat radiating member 1b shown in FIG. 2A in that it has a string shape and has end portions in the length direction. Similar to the heat radiating member 1 b, the heat radiating member 1 c includes a plurality of through holes 12 connected to the inner space 3 on the side surface 5 of the main body 2 c including the rubber-like elastic body 10 c and the heat conducting material 30. The rubber-like elastic body 10c is made of the same material as the rubber-like elastic body 10 in the first embodiment. In addition, you may attach the member which couple | bonds both ends to the length direction both ends of the main body 2c of the thermal radiation member 1c. Thus, the form of the heat radiating members 1b and 1c may be not only a closed ring but also a string-like form with an open ring.

FIG. 4A shows a perspective view of a part of a heat radiating member according to a modified example in which a second layer is provided on the main body of FIGS. 3A and 3B and a right side view of the heat radiating member as viewed from one end direction. 4B shows a perspective view of a part of a heat radiating member according to a modification in which the second layer is provided on the main body of FIGS. 3A and 3B and a right side view of the heat radiating member as viewed from one end direction.

The main body 2b ′ shown in FIG. 4A has a tube shape, and includes a first layer 15b including the rubber-like elastic body 10b and the heat conductive material 30, and is disposed inside the first layer 15b and conducts heat more than the first layer 15b. A second layer 20b having excellent properties. Here, the second layer 20b is a layer mainly composed of metal, but may be a layer containing ceramics or graphite. The first layer 15b is made of the same material as the first layer 15 of the heat dissipation member 1 according to the first embodiment. The second layer 20b is made of the same material as the second layer 20 of the heat dissipation member 1 according to the first embodiment.

The heat dissipating member 1b has a through-hole (an example of a penetrating part) 12 that leads from the inner space 3 penetrating in the length direction of the main body 2b ′ to the outside of the main body 2b ′, and a side surface 5 other than the lengthwise surface of the main body 2b ′. Prepare for. The through hole 12 is a portion that communicates with the inner space 3 from the side surface 5 located outside the main body 2b '. For this reason, both inner and outer surfaces of the main body 2b 'can be used for heat dissipation. The main body 2b 'shown in FIG. 4A may constitute a string-like heat radiating member 1c (see FIG. 3B).

The main body 2b '' shown in FIG. 4B contains a metal, a carbon-based material, or both on the outside by reversing the material of the first layer 15b and the material of the second layer 20b of the main body 2b ′ shown in FIG. 4A. The first layer 15b is provided, and the second layer 20b containing the rubber-like elastic body 10b and the heat conductive material 30 is provided inside thereof. Even in this case, the through-hole 12 penetrates the second layer 20b and the first layer 15b and communicates the outside and the inner space 3 as in FIG. 4A.

2. Next, the heat dissipating heat generator according to each embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 5A shows a perspective view of the heat dissipating heating element according to the first embodiment of the present invention. FIG. 5B shows a perspective view of the heat dissipating heating element according to the first embodiment of the present invention.

As shown in FIG. 5A, the heat dissipating heat generating element 50 according to the first embodiment has a configuration in which three ring-shaped heat dissipating members 1 are mounted at predetermined intervals on an outer surface 41 of an electrolytic capacitor 40 which is an example of a heat generating element. Have. The number of heat dissipating members 1 is not limited to three, and may be one, two, or four or more. The heat dissipation member 1 is a member closed in a ring shape shown in FIG. 1A. The main body can take various forms such as FIG. 1A, FIG. 2A, FIG. 2B, FIG. 2C, FIG. In order to minimize the risk of explosion (explosion), the electrolytic capacitor 40 usually has a configuration in which the top surface tends to fly upward. For this reason, the outer side surface 41 is a part suitable for fitting the heat radiating member 1. Even when the plurality of electrolytic capacitors 40 are densely arranged, the heat radiating member 1 has the inner space 3 and the gap 4 and is deformable. Therefore, the heat radiating member 1 can sufficiently exhibit the function of transferring heat from the electrolytic capacitor 40 to itself and radiating it to other parts (including in the air) without being damaged.

As shown in FIG. 5B, the heat dissipating heating element 50 a according to the modification of the first embodiment winds one string-like heat dissipating member 1 a around the outer surface 41 of the electrolytic capacitor 40 three times at a predetermined interval. It has the structure where it mounted. The number of heat dissipating members 1a is not limited to one and may be two or more. The heat dissipating member 1a is a string-like member having both ends as shown in FIG. 1B. The main body may take various forms such as FIGS. 1B, 2A, 2B, 2C, 2D. Even when the plurality of electrolytic capacitors 40 are densely arranged, the heat dissipating member 1a has the inner space 3 and the gap 4 and can be deformed. Therefore, the heat radiating member 1a can sufficiently exhibit the heat radiating function, similarly to the heat radiating member 1 described above.

(Second Embodiment)
FIG. 6A is a perspective view of various heat dissipating heat generating elements according to the second embodiment of the present invention. FIG. 6B is a perspective view of various heat dissipating heat generating elements according to the second embodiment of the present invention.

The heat dissipating heating element 50b according to the second embodiment has a configuration in which three annular heat dissipating members 1b are mounted on the outer surface 41 of the electrolytic capacitor 40 at a predetermined interval, as shown in FIG. 6A. The number of heat dissipating members 1b is not limited to three, and may be one, two, or four or more. The heat radiating member 1b is a member closed in a ring shape shown in FIG. 3A. The main body can take various forms such as FIGS. 3A, 4A, 4B. Even when the plurality of electrolytic capacitors 40 are densely arranged, the heat radiating member 1b has the inner space 3 and can be deformed. Therefore, the heat radiating member 1b can sufficiently exhibit the function of transferring heat from the electrolytic capacitor 40 to itself and radiating it to other parts (including in the air) without being damaged.

As shown in FIG. 6B, the heat dissipating heat generating element 50c according to the modification of the second embodiment winds one string-like heat dissipating member 1c around the outer surface 41 of the electrolytic capacitor 40 three times at a predetermined interval. It has the structure where it mounted. The number of heat dissipating members 1c is not limited to one and may be two or more. The main body may take various forms such as FIG. 3B, FIG. 4A, and FIG. 4B. Even when the plurality of electrolytic capacitors 40 are densely arranged, the heat dissipating member 1c has the inner space 3 and is deformable. Therefore, the heat radiating member 1c can sufficiently exhibit the heat radiating function, similarly to the heat radiating member 1b described above.

(Third embodiment)
FIG. 7 shows a perspective view and an enlarged view of a part B of the heat dissipating heating element according to the third embodiment of the present invention.

The heat dissipating heat generating element 70 according to the third embodiment has a configuration in which six ring-shaped heat dissipating members 1 are mounted at predetermined intervals on outer surfaces 61 to 64 of a battery cell 60 which is an example of a heat generating element. Thus, by mounting the spiral heat dissipation member 1 on the battery cell 60, the heat from the battery cell 60 can be quickly dissipated. Instead of the heat radiating member 1, the heat radiating members 1 a, 1 b and 1 c may be attached to the battery cell 60. When the string-like heat radiating members 1 a and 1 c are attached to the battery cell 60, the heat radiating members 1 a and 1 c may be wound once or twice or more along the outer periphery of the battery cell 60.

3. Other Embodiments As described above, the preferred embodiments of the present invention have been described. However, the present invention is not limited thereto, and various modifications can be made.

For example, the heating element to which the heat radiating members 1, 1 a, 1 b, 1 c (hereinafter referred to as “heat radiating member 1”) is attached is not limited to the electrolytic capacitor 40 or the battery cell 60, but may be other electronic components or circuit boards. . For example, as a capacitor (also referred to as a capacitor) including an electrolytic capacitor, not only an aluminum electrolytic capacitor and an aluminum solid electrolytic capacitor, but also a tantalum electrolytic capacitor, a ceramic capacitor, a mica capacitor, a polyester film capacitor, and an electric double layer capacitor can be exemplified. Further, the battery cell 60 may be a battery cell 60 that can be mounted on other moving means such as a train and a ship, in addition to the battery cell 60 mounted on the battery of the electric vehicle.

The main bodies 2, 2b, 2b ′, 2b ″, 2c (hereinafter referred to as “main body 2 etc.”) of the heat radiating member 1 and the like are rubber elastic bodies 10, 10b, 10c (hereinafter “rubber elastic body 10 etc.”). ”) And a heat conductive material 30. However, the main body 2 or the like may be in the form of a spiral, a tube, or a solid including both a metal, a carbon-based material, or a metal and a carbon-based material.

In addition, the plurality of constituent elements of the above-described embodiments can be freely combined except when they cannot be combined with each other.

The present invention can be used, for example, in various electronic devices such as automobiles, industrial robots, power generation devices, PCs, and household appliances in addition to automobile batteries.

Claims

A heat dissipating member that can be attached to a heating element and can expand and contract in its length direction,
In a string-like or ring-shaped main body including a heat conductive material having higher heat conductivity than that of the rubber-like elastic body in the rubber-like elastic body, a penetrating portion that communicates from the inner space penetrating in the length direction to the outside of the main body, A heat dissipating member provided on a side surface other than the lengthwise surface of the main body.
The heat dissipating member according to claim 1, wherein the main body has a form in which a flat plate is spirally advanced in the length direction of the main body.
The heat dissipating member according to claim 1, wherein the main body has a tube shape.
The body is
A first layer containing the heat conductive material in the rubber-like elastic body;
A second layer disposed inside or outside the first layer and having better thermal conductivity than the first layer;
The heat radiating member according to claim 1, having at least
The heat radiation member according to claim 4, wherein the second layer is a layer mainly composed of metal or a layer containing ceramics or graphite.
A heat-dissipating heating element having a configuration in which the heat-dissipating member according to any one of claims 1 to 5 is mounted on the heating element.
The main body of the heat dissipation member is configured in a ring shape,
The heat dissipating heat generating element according to claim 6, wherein the heat dissipating member is mounted in a ring shape on the surface of the heat generating element.
The main body of the heat dissipation member is configured in a string shape,
The heat dissipating heat generator according to claim 6, wherein the heat dissipating member is mounted so as to be wound around the surface of the heat generating element.
The heat-dissipating heating element according to any one of claims 6 to 8, wherein the heating element is a capacitor or a battery cell.