CN213343089U

CN213343089U - Heat radiation member and heat radiation heating body with the same

Info

Publication number: CN213343089U
Application number: CN201990000441.8U
Authority: CN
Inventors: 清水隆男
Original assignee: Shin Etsu Polymer Co Ltd
Current assignee: Shin Etsu Polymer Co Ltd; Shin Etsu Chemical Co Ltd
Priority date: 2018-03-23
Filing date: 2019-03-01
Publication date: 2021-06-01
Anticipated expiration: 2029-03-01
Also published as: WO2019181423A1; JP2019169603A; JP7030586B2

Abstract

The utility model provides a should the intensive heat dissipation component that just can exert high thermal diffusivity of heat-generating body easily and install the thermal diffusivity heat-generating body of this heat dissipation component. The utility model relates to a heat radiation component (1) and install heat dissipation heat-generating body (50) of this heat radiation component (1), heat radiation component (1) can be installed in the heat-generating body and can stretch out and draw back in the length direction of this heat radiation component, contain the rope form or annular main part (2) department of heat-conducting material (30) that heat conductivity is higher than rubber-like elastomer (10) in rubber-like elastomer (10), side (5) outside the length direction face of main part (2) possesses and link up position (4), link up position (4) from the inside space (3) that link up in the length direction of this heat radiation component and access to the outside of this main part (2).

Description

Heat radiation member and heat radiation heating body with the same

Cross Reference to Related Applications

The application claims priority based on a special application 2018-055965 filed in Japan on 3/23/2018, and the content described in the application is incorporated into the specification. The contents of the patents, patent applications, and documents cited in the present application are incorporated into the present specification.

Technical Field

The present invention relates to a heat radiation member for promoting heat radiation from a heat generating element and a heat radiation heat generating element in a state where the heat radiation member is attached to the heat generating element.

Background

Control systems for electronic devices for automobiles, airplanes, ships, or home use or business use are more precise and complicated, and along with this, the integration density of small electronic components on a circuit board is increasing. As a result, it is strongly desired to solve the problem of failure and short life of the electronic component due to heat generation around the circuit board.

In order to achieve rapid heat dissipation from the circuit board, conventionally, a method of forming the circuit board itself from a material having excellent heat dissipation properties, and mounting a heat sink or driving a cooling fan has been performed singly or in combination of a plurality of them. Among them, the method of forming the circuit board itself of a material having excellent heat dissipation properties, for example, diamond, aluminum nitride (AlN), cBN, or the like, makes the cost of the circuit board extremely high. In addition, the configuration of the cooling fan causes the following problems: a rotating device such as a fan may malfunction, maintenance is required to prevent malfunction, and it is difficult to secure an installation space. On the other hand, the heat dissipation fins are simple members having a large number of columnar or flat protruding portions made of a metal having high thermal conductivity (for example, aluminum) to increase the surface area and further improve heat dissipation, and therefore are widely used as heat dissipation members (see patent document 1).

However, in the world, it is currently desired to gradually convert existing gasoline vehicles or diesel vehicles into electric vehicles in order to reduce the burden on the global environment. In particular, electric automobiles are becoming popular in recent years in china as well as in european countries including france, the netherlands, and germany. In the popularization of electric vehicles, there are problems such as the installation of a large number of charging stations in addition to the development of high-performance batteries. In particular, technical development for improving the charge and discharge functions of lithium-based automobile batteries has been a major problem. It is known that the above-mentioned automobile battery cannot sufficiently exhibit a charge/discharge function at a high temperature of 60 ℃. Therefore, as with the circuit board described above, in the battery, improvement of heat dissipation has also been regarded as important.

In addition, electrolytic capacitors are indispensable for the spread of electric vehicles and control circuits for supplying electric power to infrastructure facilities other than vehicles. Electrolytic capacitors are used in many applications such as inverters, converters, and computers for signal control and arithmetic processing. Unlike a capacitor mounted on a small electronic device, such a capacitor is large in size and generates a large amount of heat.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2008-243999

SUMMERY OF THE UTILITY MODEL

Problem to be solved by utility model

In the future, it is becoming more and more difficult to use a conventional heat sink in consideration of a situation where the density of electronic components on a circuit board is becoming high, a situation where electrolytic capacitors are densely packed, or a situation where the necessity of further promoting heat dissipation from a battery is increasing. Therefore, a heat radiation member corresponding to the densification and higher heat radiation performance of the heat generating body to be heat radiated is strongly desired.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a heat radiation member which can easily cope with the densification of heat generating bodies and can exhibit high heat radiation performance, and a heat radiation heat generating body to which the heat radiation member is attached.

Means for solving the problems

(1) A heat radiation member according to one embodiment for achieving the above object is a heat radiation member that is attachable to a heating element and is stretchable in a longitudinal direction of the heat radiation member, the heat radiation member including a through portion on a side surface of a string-shaped or ring-shaped body other than a surface of the body in the longitudinal direction, the through portion leading from an internal space penetrating in the longitudinal direction of the body to an outside of the body, the body including a heat conductive material having a higher heat conductivity than the rubber-like elastic body in the rubber-like elastic body.

(2) In the heat radiation member according to another embodiment, the body preferably has a configuration in which the flat plate is spirally advanced in the longitudinal direction of the body.

(3) In the heat radiation member according to another embodiment, the main body is preferably tubular.

(4) In the heat radiation member according to another embodiment, the main body preferably includes at least:

a first layer comprising a heat conductive material in a rubbery elastomer; and a second layer which is disposed inside or outside the first layer and has a thermal conductivity superior to that of the first layer.

(5) A heat-radiating heat-generating body according to an embodiment has a structure in which any of the heat-radiating members described above is attached to the heat-generating body.

(6) In the heat radiating heat generating element according to the other embodiment, preferably, the body of the heat radiating member is formed in a ring shape, and the heat radiating member is attached to the surface of the heat generating element in a ring shape.

(7) In the heat radiating heat generating element according to the other embodiment, preferably, the body of the heat radiating member is formed in a string shape, and the heat radiating member is attached to the surface of the heat generating element in a wound manner.

(8) In the heat radiating heat generating element according to the other embodiment, the heat generating element is preferably a capacitor or a battery cell.

Effect of the utility model

According to the present invention, it is possible to provide a heat radiation member which can easily cope with the densification of the heat radiation body and can exert high heat radiation performance, and a heat radiation body in which the heat radiation member is installed.

Drawings

Fig. 1A is a plan view of the heat dissipation member according to the first embodiment and an enlarged side view of a portion between arrows a-a in the plan view.

Fig. 1B is a perspective view showing a modification of the heat dissipating member shown in fig. 1A.

Fig. 2A is an enlarged side view similar to fig. 1A showing a modification of the main body of the 2 kinds of heat radiation members shown in fig. 1A and 1B.

Fig. 2B is an enlarged side view similar to fig. 1A showing a modification of the main body of the 2 kinds of heat radiation members shown in fig. 1A and 1B.

Fig. 2C is an enlarged side view similar to fig. 1A showing a modification of the main body of the 2 kinds of heat radiation members shown in fig. 1A and 1B.

Fig. 2D is an enlarged side view similar to fig. 1A showing a modification of the main body of the 2 kinds of heat radiation members shown in fig. 1A and 1B.

Fig. 3A is a perspective view of a heat dissipation member according to a second embodiment and an enlarged side view of a portion between arrows a-a in the perspective view.

Fig. 3B is a perspective view of a modification of the heat dissipating member shown in fig. 3A and an enlarged side view of a portion between arrows a-a in the perspective view.

Fig. 4A is a perspective view of a part of the heat dissipating member according to the modified example in which the second layer is provided in the main body of fig. 3A and 3B, and a right side view of the heat dissipating member when viewed from one end direction.

Fig. 4B is a perspective view of a part of the heat dissipation member according to the modified example in which the second layer is provided in the main body of fig. 3A and 3B, and a right side view of the heat dissipation member when viewed from one end direction.

Fig. 5A is a perspective view of a heat radiating heating element according to a first embodiment of the present invention.

Fig. 5B is a perspective view of a heat radiating heating element according to a first embodiment of the present invention.

Fig. 6A is a perspective view of a heat radiating heating element according to a second embodiment of the present invention.

Fig. 6B is a perspective view of a heat radiating heating element according to a second embodiment of the present invention.

Fig. 7 is a perspective view of a heat radiating heating element according to a third embodiment of the present invention and an enlarged view of a part B.

Description of the reference symbols

1. 1a, 1b, 1c heat radiating member, 2 b', 2c body, 3 internal space, 4 gaps (an example of a through part), 5 side surfaces, 10b, 10c rubber-like elastic body, 12 through holes (an example of a through part), 15b first layer, 20b second layer, 30 heat conductive material, 40 electrolytic capacitor (an example of a capacitor, a heat generating body), 41 outer side surface (a surface), 50a, 50b, 50c heat radiating heat generating body, 60 battery cell (an example of a heat generating body), 61-64 outer side surface (a surface), 70 heat radiating heat generating body.

Detailed Description

Next, embodiments of the present invention will be described with reference to the drawings. The embodiments described below do not limit the scope of the present invention, and all of the elements and combinations thereof described in the embodiments are not necessarily essential to the technical means of the present invention.

1. Heat radiation component

(first embodiment)

Fig. 1A is a plan view of the heat dissipation member according to the first embodiment and an enlarged side view of a portion between arrows a-a in the plan view. Fig. 1B is a perspective view of a modification of the heat radiation member of fig. 1A.

The heat radiation member 1 according to the first embodiment is a heat radiation member that can be attached to a heat generating body and can expand and contract in the longitudinal direction of the heat radiation member 1. The heat radiation member 1 has an annular 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 radiation member 1 includes a gap (an example of a penetrating portion) 4 extending from the inner space 3 penetrating in the longitudinal direction of the main body 2 to the outside of the main body 2 on a side surface 5 other than the longitudinal direction of the main body 2.

Preferably, the body 2 of the heat radiating member 1 has a form in which a flat plate spirally travels in the longitudinal direction of the body 2. In the present embodiment, the main body 2 preferably includes at least the first layer 15 including the rubber-like elastic body 10 and the heat conductive material 30, and the second layer 20 disposed inside the first layer 15 and having a thermal conductivity superior to that of the rubber-like elastic body 10. As described later, the first layer 15 and the second layer 20 may be arranged in reverse, and the second layer 20 may be provided outside the first layer 15. The main body 2 may include a layer other than the first layer 15 and the second layer 20.

The rubber-like elastic body 10 preferably includes a thermosetting elastic body such as silicone rubber, urethane rubber, isoprene rubber, ethylene propylene rubber, natural rubber, ethylene propylene diene rubber, Nitrile Butadiene Rubber (NBR) or Styrene Butadiene Rubber (SBR), a thermoplastic elastic body such as a polyamide-based elastic body represented by polyurethane-based, ester-based, styrene-based, olefin-based, butadiene-based, fluorine-based, or nylon (registered trademark), or a composite thereof. The rubber-like elastic body 10 may be a material containing a resin harder than the rubber or the like, and for example, polyphenylene sulfide (PPS), polyether ether ketone (PEEK), polyamide imide (PAI), or the like is preferable. The rubber-like elastic body 10 is preferably made of a material having high heat resistance to such an extent that it is not melted or decomposed by heat from a heat generating body to be radiated and can maintain its form.

Preferably, the thermally conductive material (also referred to as thermally conductive filler) 30 is a metal, a carbon-based material, or a ceramic. Examples of the metal include aluminum, aluminum-based alloys, iron-based alloys, copper-based alloys, and SUS. As the ceramic, an oxide, a hydroxide, or a nitride of a metal can be cited. More preferable materials for the ceramic include alumina, aluminum hydroxide, aluminum nitride, hBN, cBN, silicon carbide, and the like. Further, examples of the carbon-based material include diamond, diamond-like carbon, amorphous carbon, graphite, and the like. The thermally conductive material 30 may be contained at any ratio with respect to the total volume of the first layer 15 if there is no obstacle in manufacturing the first layer 15, but is preferably in the range of 2 to 70 vol%. The thermally conductive material 30 in fig. 1A is 2 to 10 vol% based on the total volume of the first layer 15.

The second layer 20 is a layer mainly composed of metal. Examples of the metal include aluminum, aluminum-based alloys, iron-based alloys, copper-based alloys, and SUS. Preferably, the second layer 20 is 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 a metal. As the carbon-based material, the same material as the carbon-based material that can be used for the heat conductive material 30 can be exemplified. The metal or carbon-based material may be a material constituting all or a part of the second layer 20. When the metal or carbon-based material is a material constituting a part of the second layer 20, for example, cellulose or a resin, which is a raw material of paper, may be mixed with the metal or carbon-based material and molded into a sheet shape to manufacture the second layer 20.

When the body 2 of the heat radiation member 1 is formed in a spiral shape, a spiral gap 4 is formed in a side surface 5 of the body 2. The gap 4 is a portion communicating with the internal space 3 from a side surface 5 located outside the main body 2. Therefore, both the inner and outer surfaces of the main body 2 can be used for heat radiation. Further, by constituting the first layer 15 positioned on the outer surface of the heat radiation member 1 with the rubber-like elastic body 10, when the annular heat radiation member 1 is fitted to the outside of the heating element, the heating element is easily brought into close contact with the outer surface of the heat radiation member 1. Therefore, the thermal resistance (i.e., the property of inhibiting heat conduction) between the heat radiating member 1 and the heat generating body can be reduced. Further, since the spiral body 2 has high stretchability, there is no limitation or a reduction in the size of the heating element.

The heat radiation member 1A shown in fig. 1B is different from the heat radiation member 1 shown in fig. 1A in that it is in a string shape and has end portions (may also be referred to as end surfaces) in its longitudinal direction. The heat radiation member 1a has a configuration in which the flat plate on which the first layer 15 and the second layer 20 are laminated runs in a spiral shape along the longitudinal direction of the body 2, similarly to the heat radiation member 1. Further, members for coupling both ends in the longitudinal direction of the body 2 of the heat radiating member 1a may be attached to both ends. In this way, the heat radiation members 1 and 1a may be in the form of not only closed loops but also opened loops in the form of strings.

Fig. 2A is an enlarged side view similar to fig. 1A showing a modification of the main body of the 2 kinds of heat radiation members shown in fig. 1A and 1B. Fig. 2B is an enlarged side view similar to fig. 1A showing a modification of the main body of the 2 kinds of heat radiation members shown in fig. 1A and 1B. Fig. 2C is an enlarged side view similar to fig. 1A showing a modification of the main body of the 2 kinds of heat radiation members shown in fig. 1A and 1B. Fig. 2D is an enlarged side view similar to fig. 1A showing a modification of the main body of the 2 kinds of heat radiation members shown in fig. 1A and 1B.

Fig. 2A is an enlarged side view similar to fig. 1A showing a modification of the main body of the 2 kinds of heat radiation members shown in fig. 1A and 1B, except that the volume% of the heat conductive material 30 occupying the first layer 15 of the main body 2 shown in fig. 2A is set to be larger than that of the main body 2 shown in fig. 1A and to fall within a range of 11 to 30 volume%. Fig. 2B is an enlarged side view similar to fig. 1A showing a modification of the main body of the 2 kinds of heat radiation members shown in fig. 1A and 1B. Common to the body 2 shown in fig. 1A.

The main body 2 shown in fig. 2B is common to the main body 2 shown in fig. 2A except that the volume% of the heat conductive material 30 occupying the first layer 15 is set to be larger than that of the main body 2 shown in fig. 2A and is set to be within a range of 31 to 70 volume%.

The body 2 shown in fig. 2C is common to the body 2 shown in fig. 2A, except that it is composed of only the first layer 15 of fig. 2A and does not have the second layer 20. In this manner, the heat radiation members 1 and 1a may be provided with the main body 2 composed only of the first layer 15 including the rubber-like elastic body 10 and the heat conductive material 30. Similarly to fig. 2B or fig. 1A, the thermally conductive material 30 may be provided in each range of 31 to 70 vol% or 2 to 10 vol% with respect to the first layer 15.

The main body 2 shown in fig. 2D has the following configuration: in the body 2 shown in fig. 2A, the material of the first layer 15 and the material of the second layer 20 are reversed, and the first layer 15 containing a metal, a carbon-based material, or both is provided on the outer side, and the second layer 20 containing the rubber-like elastic body 10 and the heat conductive material 30 is provided on the inner side. In this case, the gap 4 penetrates the second layer 20 and the first layer 15 to communicate the outside with the internal space 3, as in fig. 2A.

(second embodiment)

Next, a heat radiation member according to a second embodiment will be described. The same reference numerals are given to portions common to those of the first embodiment, and redundant description is omitted.

Fig. 3A is a perspective view of a heat dissipation member according to a second embodiment and an enlarged side view of a portion between arrows a-a in the perspective view. Fig. 3B is a perspective view of a modification of the heat dissipating member shown in fig. 3A and an enlarged side view of a portion between arrows a-a in the perspective view.

The heat radiation member 1b according to the second embodiment is a heat radiation member that can be attached to a heat generating element and can expand and contract in the longitudinal direction thereof. The heat radiation member 1b shown in fig. 3A has an annular 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 10 b. The heat radiation member 1b includes a through hole (an example of a through portion) 12 extending from the internal space 3 penetrating in the longitudinal direction of the main body 2b to the outside of the main body 2b, in a side surface 5 other than the surface of the main body 2b in the longitudinal direction. The body 2b is tubular. The through hole 12 is a portion communicating with the internal space 3 from the side surface 5 located outside the main body 2 b. Therefore, both the inner and outer surfaces of the main body 2b can be used for heat radiation. 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 constituting the entire body 2b of the heat radiation member 1b with the rubber-like elastic body 10b, when the annular heat radiation member 1b is fitted to the outside of the heating element, the heating element is easily brought into close contact with the outer surface of the heat radiation member 1 b. Therefore, the thermal resistance between the heat radiation member 1b and the heat generating body can be reduced. Further, since the main body 2b has stretchability, there is no limitation or a reduction in the size of the heating element.

The heat radiation member 1c shown in fig. 3B is different from the heat radiation member 1B shown in fig. 2A in that it is in a string shape and has end portions in its longitudinal direction. The heat radiation member 1c has a plurality of through holes 12 communicating with the internal space 3 on the side surface 5 of the main body 2c including the rubber-like elastic body 10c and the heat conductive material 30, similarly to the heat radiation member 1 b. The rubber-like elastic body 10c is made of the same material as the rubber-like elastic body 10 in the first embodiment. Further, members for coupling both ends of the body 2c of the heat radiating member 1c in the longitudinal direction may be attached to both ends. In this way, the heat radiation members 1b and 1c may be not only in the form of closed rings but also in the form of strings with open rings.

Fig. 4A is a perspective view of a part of the heat dissipating member according to the modified example in which the second layer is provided in the main body of fig. 3A and 3B, and a right side view of the heat dissipating member when viewed from one end direction. Fig. 4B is a perspective view of a part of the heat dissipation member according to the modified example in which the second layer is provided in the main body of fig. 3A and 3B, and a right side view of the heat dissipation member when viewed from one end direction.

The main body 2 b' shown in fig. 4A is tubular, and has a first layer 15b including the rubber-like elastic body 10b and the heat conductive material 30, and a second layer 20b disposed inside the first layer 15b and having a thermal conductivity superior to that of the first layer 15 b. Here, the second layer 20b is a layer mainly composed of metal, but may be a layer containing ceramic or graphite. The first layer 15b is made of the same material as the first layer 15 of the heat radiation 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 radiation member 1 according to the first embodiment.

The heat radiation member 1b includes a through hole (an example of a through portion) 12 extending from the inner space 3 penetrating in the longitudinal direction of the main body 2b ' to the outside of the main body 2b ' on the side surface 5 other than the surface of the main body 2b ' in the longitudinal direction. The through hole 12 communicates with the internal space 3 from the side surface 5 located outside the main body 2 b'. Therefore, both the inner and outer surfaces of the main body 2 b' can be used for heat radiation. The main body 2B' shown in fig. 4A may constitute a string-shaped heat radiation member 1c (see fig. 3B).

The main body 2B ″ shown in fig. 4B has the following configuration: in contrast to the material of the first layer 15b and the material of the second layer 20b of the main body 2 b' shown in fig. 4A, the first layer 15b containing a metal, a carbon-based material, or both of them is provided on the outer side, and the second layer 20b containing the rubber-like elastic body 10b and the heat conductive material 30 is provided on the inner side. In this case, the through-hole 12 also penetrates the second layer 20b and the first layer 15b to communicate the outside with the internal space 3, as in fig. 4A.

2. Heat radiating heating body

Next, a heat radiating heating element according to each embodiment of the present invention will be described with reference to the drawings.

(first embodiment)

Fig. 5A is a perspective view of a heat radiating heating element according to a first embodiment of the present invention. Fig. 5B is a perspective view of the heat radiating heating element according to the first embodiment of the present invention.

As shown in fig. 5A, the heat radiating heat generating element 50 according to the first embodiment has a structure in which 3 annular heat radiating members 1 are attached to the outer surface 41 of the electrolytic capacitor 40 as an example of the heat generating element at predetermined intervals. The number of the heat radiation members 1 is not limited to 3, and may be 1, 2, or 4 or more. The heat radiation member 1 is a closed ring-shaped member shown in fig. 1A. The main body may take various forms such as fig. 1A, 2B, 2C, 2D, and the like. The electrolytic capacitor 40 generally has a structure in which the top surface is easily scattered upward in order to minimize the risk of breakage (explosion). Therefore, the outer surface 41 is a portion suitable for fitting the heat radiation member 1. Even when a plurality of electrolytic capacitors 40 are densely arranged, the heat dissipation member 1 has the internal space 3 and the gap 4 and is freely deformable. Therefore, the heat radiation member 1 can sufficiently exhibit the function of transferring heat from the electrolytic capacitor 40 to itself and radiating the heat to other parts (including air) without being damaged.

As shown in fig. 5B, the heat radiation heating element 50a according to the modification of the first embodiment has a structure in which 1 string-shaped heat radiation member 1a is wound 3 times at a predetermined interval on the outer surface 41 of the electrolytic capacitor 40. The number of the heat radiation members 1a is not limited to 1, and may be 2 or more. The heat radiation member 1a is a string-like member having both ends as shown in fig. 1B. The main body may take various forms such as fig. 1B, fig. 2A, fig. 2B, fig. 2C, fig. 2D, and the like. Even when a plurality of electrolytic capacitors 40 are densely arranged, the heat dissipation member 1a has the internal space 3 and the gap 4 and is freely deformable. Therefore, the heat radiation member 1a can sufficiently exhibit the heat radiation function as in the case of the heat radiation member 1 described above.

(second embodiment)

Fig. 6A is a perspective view of various heat radiating heating elements according to a second embodiment of the present invention. Fig. 6B is a perspective view of various heat radiating heating elements according to a second embodiment of the present invention.

As shown in fig. 6A, the heat radiation heating element 50b according to the second embodiment has a structure in which 3 annular heat radiation members 1b are attached to the outer surface 41 of the electrolytic capacitor 40 at predetermined intervals. The number of the heat radiation members 1b is not limited to 3, and may be 1, 2, or 4 or more. The heat radiation member 1b is a closed ring-shaped member shown in fig. 3A. The main body may take various forms such as fig. 3A, 4B, and the like. Even when a plurality of electrolytic capacitors 40 are densely arranged, the heat dissipation member 1b has the internal space 3 and is freely deformable. Therefore, the heat radiation member 1b can sufficiently exhibit the function of transferring heat from the electrolytic capacitor 40 to itself and radiating the heat to other parts (including air) without being damaged.

As shown in fig. 6B, the heat radiation heating element 50c according to the modification of the second embodiment has a structure in which 1 string-shaped heat radiation member 1c is wound 3 times at a predetermined interval on the outer surface 41 of the electrolytic capacitor 40. The number of the heat radiation members 1c is not limited to 1, and may be 2 or more. The main body may take various forms such as fig. 3B, 4A, 4B, and the like. Even when a plurality of electrolytic capacitors 40 are densely arranged, the heat dissipation member 1c has the internal space 3 and is freely deformable. Therefore, the heat radiation member 1c can sufficiently exhibit the heat radiation function as in the case of the heat radiation member 1b described above.

(third embodiment)

The heat radiating heat generating element 70 according to the third embodiment has a structure in which 6 annular heat radiating members 1 are attached to the outer surfaces 61 to 64 of the battery cell 60 as an example of the heat generating element at predetermined intervals. By attaching the spiral heat radiation member 1 to the battery unit 60 in this manner, heat from the battery unit 60 can be quickly radiated. Instead of the heat radiation member 1, the heat radiation members 1a, 1b, and 1c may be attached to the battery unit 60. When the string-shaped heat radiation members 1a and 1c are attached to the battery unit 60, the heat radiation members 1a and 1c may be wound around the outer periphery of the battery unit 60 1 time or 2 times or more.

3. Other embodiments

While the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications can be made.

For example, the heat generating body on which the heat dissipating members 1, 1a, 1b, 1c (hereinafter referred to as "heat dissipating member 1 and the like") are mounted may be not only the electrolytic capacitor 40 or the battery unit 60 but also 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 are exemplified. The battery unit 60 may be a battery unit that is mounted on other moving means such as an electric car or a ship, in addition to a battery unit that is mounted on an electric vehicle.

The main body 2, 2 b', 2b ", 2c (hereinafter referred to as" main body 2 or the like ") of the heat radiating member 1 or the like is a string-like or ring-like main body including the rubber-like

elastic bodies

10, 10b, 10c (hereinafter referred to as" rubber-like elastic body 10 or the like ") and the heat conductive material 30. However, the body 2 and the like may be in a spiral, tubular or solid form containing a metal, a carbon-based material, or both a metal and a carbon-based material.

In addition, a plurality of components of the above embodiments can be freely combined, except for the case where they cannot be combined with each other.

(Industrial Applicability)

The utility model discloses except that the battery for the car, for example can also be used for various electronic equipment such as car, industrial robot, power generation facility, PC, household electrical apparatus product.

Claims

1. A heat-dissipating member, characterized in that,

the heat radiating member is attachable to the heating element and is extendable and retractable in a longitudinal direction of the heat radiating member,

the heat radiation member includes a through portion that extends from an internal space penetrating in a longitudinal direction of the body to an outside of the body, on a side surface of the string-shaped or ring-shaped body other than a surface of the body in the longitudinal direction, and the body includes a heat conductive material having a higher heat conductivity than the rubber-like elastic body in the rubber-like elastic body.

2. The heat dissipating member according to claim 1,

the body has a configuration in which a flat plate is spirally advanced in a longitudinal direction of the body.

3. The heat dissipating member according to claim 1,

the body is tubular.

4. The heat dissipating member according to any one of claims 1 to 3,

the main body has at least:

a first layer containing the heat conductive material in the rubber-like elastic body; and

and a second layer which is disposed inside or outside the first layer and has a thermal conductivity superior to that of the first layer.

5. A heat-dissipating heat-generating body is characterized in that,

the heat-radiating heat-generating body has a structure in which the heat-radiating member according to any one of claims 1 to 4 is attached to the heat-generating body.

6. A heat radiating heat generating body according to claim 5, characterized in that,

the body of the heat discharging member is formed in a ring shape,

the heat radiating member is annularly attached to a surface of the heating element.

7. A heat radiating heat generating body according to claim 5, characterized in that,

the body of the heat discharging member is formed in a string shape,

the heat radiation member is mounted in a wound manner with respect to the surface of the heat generating body.

8. The heat dissipating heat generating body according to any one of claims 5 to 7,

the heating element is a capacitor or a battery unit.