JP6944588B2 - Heat dissipation structure and battery equipped with it - Google Patents

Description

Cross reference

This application claims priority based on Japanese Patent Application No. 2018-044917 filed in Japan on March 13, 2018, and the contents of the application are incorporated herein by reference. In addition, the contents described in the patents, patent applications and documents cited in the present application are incorporated herein by reference.

The present invention relates to a heat radiating structure that promotes heat dissipation from a heating element and a battery to which the heat radiating structure is mounted.

Control systems for automobiles, aircraft, ships, or household or commercial electronic devices are becoming more accurate and complex, and the density of small electronic components on circuit boards is increasing. .. As a result, it is strongly desired to solve the failure and shortening of the life of electronic components due to 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 having excellent heat dissipation, a heat sink is attached, or a cooling fan is driven by a single means or a combination of multiple means. It is done. Of these, a method in which the circuit board itself is made of a material having excellent heat dissipation, for example, diamond, aluminum nitride (AlN), cBN, or the like, makes the cost of the circuit board extremely high. In addition, the arrangement of the cooling fan causes problems such as failure of the rotating device called the fan, maintenance necessity for preventing the failure, and difficulty in securing the installation space. On the other hand, the heat radiating fin is a simple one that can increase the surface area and further improve the heat radiating property by forming a large number of columnar or flat plate-shaped projecting portions using a metal having high thermal conductivity (for example, aluminum). Since it is a member, it is widely used as a heat-dissipating component (see Patent Document 1).

By the way, at present, there are active movements around the world to gradually convert conventional gasoline-powered vehicles or diesel-powered vehicles to electric vehicles for the purpose of reducing the burden on the global environment. In particular, electric vehicles have become widespread in recent years in China as well as in European countries such as France, the Netherlands, and Germany. The spread of electric vehicles has issues such as the development of high-performance batteries and the installation of a large number of 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 fully exert its charge / discharge function at a high temperature of 60 degrees Celsius or higher. For this reason, it is important to improve the heat dissipation of the battery as well as the circuit board described above.

In order to quickly dissipate heat from the battery, place the water cooling pipe in a metal housing with excellent thermal conductivity such as aluminum, place a large number of battery cells in the housing, and place the battery cell and the bottom of the housing. A structure in which an adhesive rubber sheet is sandwiched between the two is adopted. Hereinafter, description will be made with reference to the drawings.

FIG. 7 shows a schematic cross-sectional view of a conventional battery. The battery 100 of FIG. 7 includes a large number of battery cells 101 on the inner bottom surface 103 of the housing 102 made of aluminum or an aluminum-based alloy. The bottom 104 of the housing 102 is provided with a water cooling pipe 105 for flowing cooling water. The battery cell 101 is fixed in the housing 102 with a rubber sheet (for example, a sheet made of room temperature curable silicone rubber) 106 sandwiched between the battery cell 101 and the bottom portion 104. In the battery 100 having such a structure, the battery cell 101 transfers heat to the housing 102 through the rubber sheet 106, and the heat is effectively removed by water cooling.

Japanese Patent Application Laid-Open No. 2008-24399

However, in order to meet the demand for weight reduction of the battery 100 as shown in FIG. 7, it is necessary to further reduce the weight of the rubber sheet 106. Further, the weight reduction of the rubber sheet 106 must not increase the thermal resistance (characteristic of deteriorating thermal conductivity) between the battery cell 101 and the rubber sheet 106. This also applies not only to the battery 100 but also to the removal of heat from other heating elements such as a circuit board and an electronic device main body.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a heat-dissipating structure that is lightweight and has excellent heat-dissipating efficiency, and a battery provided with the heat-dissipating structure.

(1) The heat radiating structure according to the embodiment for achieving the above object is one or two or more long lengths including a rubber-like elastic body and a heat conductive material having higher thermal conductivity than the rubber-like elastic body. In a state where the heat-dissipating sheet and one long heat-dissipating sheet are reciprocated at a predetermined interval, or when two or more long heat-dissipating sheets are arranged side by side at a predetermined interval, they intersect the long heat-dissipating sheet. It is provided with one or more connecting members to be connected together, and the total weight of the connecting members is smaller than the total weight of the long heat radiating sheet.

(2) In the heat radiating structure according to another embodiment, the thickness of the connecting member is preferably smaller than the thickness of the long heat radiating sheet.

(3) In the heat radiating structure according to another embodiment, preferably, the connecting members are arranged so as to sew both the front and back surfaces of the plurality of long heat radiating sheets.

(4) In the heat radiating structure according to another embodiment, preferably, the connecting members are arranged so as to be sewn in order from the front surface of the long heat radiating sheet at a predetermined position to the back surface of the adjacent long heat radiating sheet. The connecting member and the long heat-dissipating sheet are plain-woven.

(5) In the heat radiating structure according to another embodiment, the connecting member is preferably a sheet containing a metal, a carbon-based material, or ceramics.

(6) The battery according to one embodiment includes the heat radiating structure according to any one of the above and one or more battery cells, and the heat radiating structure includes at least the battery cells and cooling capable of cooling the battery cells. It is arranged between the members.

(7) The battery according to another embodiment preferably includes a plurality of battery cells, and the heat radiating structure is further arranged between the plurality of battery cells.

According to the present invention, it is possible to provide a heat radiating structure that is lightweight and has excellent heat radiating efficiency, and a battery provided with the heat radiating structure.

FIG. 1A shows a plan view of a heat radiating structure according to a preferred embodiment of the present invention and an enlarged view of a part A. FIG. 1B shows a front view of a heat radiating structure according to a preferred embodiment of the present invention. FIG. 2 shows a vertical cross-sectional view of the battery according to the first embodiment of the present invention. FIG. 3 shows a perspective view of a situation in which the battery cell in FIG. 2 is arranged on the heat radiating structure. FIG. 4 shows a vertical cross-sectional view of the battery according to the second embodiment of the present invention and an enlarged view of a part B. FIG. 5A shows a partially enlarged front view of the heat dissipation structure of FIG. 1B. FIG. 5B shows a partially enlarged front view of a modified example of the heat dissipation structure of FIG. 1B. FIG. 5C shows a partially enlarged front view of a modified example of the heat dissipation structure of FIG. 1B. FIG. 6A shows a schematic plan view of the heat dissipation structure of FIG. 1A. FIG. 6B shows a schematic plan view of a modified example of the heat dissipation structure of FIG. 1A. FIG. 6C shows a schematic plan view of a modified example of the heat dissipation structure of FIG. 1A. FIG. 6D shows a schematic plan view of a modified example of the heat dissipation structure of FIG. 1A. FIG. 7 shows a schematic cross-sectional view of a conventional battery.

10, 10a, 10b, 10c, 10d, 10e ... heat dissipation structure, 11 ... long heat dissipation sheet, 11a ... rubber elastic body, 11b ... heat conductive material, 13, 13a, 13b ... Connecting member, 20, 20a ... Battery, 25 ... Cooling member, 30 ... Battery cell.

Next, each embodiment of the present invention will be described with reference to the drawings. It should be noted that each of the embodiments described below does not limit the invention according to the claims, and all of the elements and combinations thereof described in each embodiment are the means for solving the present invention. Is not always required.

1. 1. Heat-dissipating structure FIG. 1A shows a plan view of the heat-dissipating structure according to a preferred embodiment of the present invention and an enlarged view of a part A. FIG. 1B shows a front view of a heat radiating structure according to a preferred embodiment of the present invention.

The heat radiating structure 10 according to the present embodiment includes two or more long heat radiating sheets 11 including a rubber-like elastic body 11a, a heat conductive material 11b having higher thermal conductivity than the rubber-like elastic body 11a, and their long lengths. It is provided with two or more connecting members 13 that intersect and connect the elongated heat radiating sheets 11 in a state where the heat radiating sheets 11 are arranged side by side at predetermined intervals. As used herein, the term "long" means a shape that is long in one direction. The elongated heat radiating sheet 11 is an elongated sheet that is a rectangular parallelepiped long in one direction and has a relatively small thickness with respect to the width.

The rubber-like elastic body 11a is preferably thermally cured of silicone rubber, urethane rubber, acrylic rubber, isoprene rubber, ethylene propylene rubber, natural rubber, ethylene propylene diene rubber, nitrile rubber (NBR), styrene butadiene rubber (SBR), or the like. Sexual elastomer; It is configured to contain a thermoplastic elastomer such as urethane-based, ester-based, styrene-based, olefin-based, butadiene-based, and fluorine-based, or a composite thereof. The rubber-like elastic body 11a is preferably made of a material having high heat resistance that can maintain its shape without being melted or decomposed by heat from a heat source to be radiated. In this embodiment, the rubber-like elastic body 11a is more preferably silicone rubber, acrylic rubber, urethane rubber, or any two or more composites thereof.

The heat conductive material (also referred to as a heat conductive filler) 11b is preferably a metal, a carbon-based material, or a ceramic. Examples of the metal include aluminum, aluminum-based alloys, iron, iron-based alloys, copper, copper-based alloys, and SUS. Examples of ceramics include metal oxides, hydroxides and nitrides. More suitable materials for ceramics include alumina, aluminum hydroxide, aluminum nitride, hBN, cBN, silicon carbide and the like. Moreover, as a carbon-based material, diamond, diamond-like carbon, amorphous carbon, graphite and the like can be exemplified. The heat conductive material 11b may be contained in any ratio with respect to the total volume of the long heat radiating sheet 11, but is preferably in the range of 2 to 70% by volume, more preferably 5 to 20% by volume. The heat conductive material 11b may be a filler having any shape such as granular, needle-like, fibrous, and plate-like. Since the long heat radiating sheet 11 needs to be in close contact with a heating element (for example, a battery cell described later), it is preferable that the long heat radiating sheet 11 has adhesiveness to the heating element. Therefore, the rubber hardness measured by the Asker rubber hardness tester C type (ASKAR-C) of the long heat radiating sheet 11 is preferably 10 to 20 degrees.

In the present specification, "intersection" means a positional relationship other than parallel, and is not limited to a relationship that intersects at a right angle, and includes a case where the relationship intersects at any angle as long as it intersects. Further, the "predetermined interval" does not mean a specific width, nor does it mean that the width is a constant width. In this embodiment, the long heat radiating sheets 11 are preferably arranged side by side at predetermined intervals equal to or less than the width of the sheet 11.

In the heat radiating structure 10 according to this embodiment, 13 long heat radiating sheets 11 are arranged at predetermined intervals, and 16 long heat radiating sheets 11 are arranged toward the length of the long heat radiating sheet 11. It is a sheet-shaped heat radiating structure having a structure of being connected by a connecting member 13. The total weight of the connecting member 13 is smaller than the total weight of the long heat radiating sheet 11. This is because it is necessary to further reduce the weight as compared with the case where the heat radiating structure 10 is formed only from the long heat radiating sheet 11. In addition, the number, form, and form of the connecting members 13 so that the heat radiating structure 10 of this embodiment is lighter than the case where the outer region of the heat radiating structure 10 is composed of only the long heat radiating sheet 11. It is preferable that the constituent material is selected. Furthermore, the density of the connecting member 13 is preferably smaller than the density of the elongated heat radiating sheet 11. The thickness of the connecting member 13 is preferably smaller than the thickness of the long heat radiating sheet 11. The number of long heat radiating sheets 11 is not limited to 13 as long as it is two or more. Further, the number of connecting members 13 is not limited to 16 as long as it is two or more.

The connecting member 13 is arranged so as to sew both the front and back surfaces of the plurality of long heat radiating sheets 11. More specifically, the connecting member 13 is arranged so as to be sewn in order from the front surface of the long heat radiating sheet 11 at a predetermined position to the back surface of the adjacent long heat radiating sheet 11. In this embodiment, the heat radiating structure 10 has a structure in which the connecting member 13 and the long heat radiating sheet 11 are plain-woven. The connecting member 13 is a sheet containing a metal, a carbon-based material, or ceramics. A more preferable connecting member 13 is a composite sheet in which a filler of a metal, a carbon-based material, or a ceramic is dispersed in a sheet made of a thermoplastic resin or cellulose as a base material. The metal, carbon-based material, or ceramics constituting the filler is the same as the material candidate of the heat conductive material 11b in the long heat radiating sheet 11. The connecting member 13 has a function of connecting and fixing a plurality of long heat radiating sheets 11 and preferably a function of transferring heat between the plurality of long heat radiating sheets 11. The connecting member 13 is preferably a member having a lower adhesiveness than the long heat radiating sheet 11. As described above, the long heat-dissipating sheet 11 is preferably a sheet exhibiting high adhesiveness. However, if the long heat-dissipating sheet 11 is too adhesive, it may easily adhere to the heating element, making it difficult to handle. For example, when incorporating the heat radiating structure 10 into a battery having a heating element as a battery cell, the excessive adhesiveness of the long heat radiating sheet 11 may make the incorporation difficult. When the connecting member 13 having a relatively low adhesiveness is woven with the long heat radiating sheet 11, the adhesiveness of the heat radiating structure 10 as a whole can be lowered. The connecting member 13 also has such a function.

The connecting member 13a in the connecting member 13 is front, back, front, back, front, back, front, back, from the left side to the right side of FIG. 1A, among the 13 long heat dissipation sheets 11 constituting the heat dissipation structure 10 of FIG. 1A. , Front, back, front, back, front, back, front, back, front are arranged alternately in contact with the front surface and the back surface of the long heat radiating sheet 11. Further, the connecting member 13b in the connecting member 13 is the back, front, and back of the 13 long heat radiating sheets 11 constituting the heat radiating structure 10 in FIG. 1A from the left side to the right side in FIG. 1A. , Front side, back side, front side, back side, front side, back side, front side, back side, front side, back side alternately arranged in contact with the front side and the back side of the long heat radiating sheet 11. The connecting member 13a and the connecting member 13b are alternately arranged in the length direction of the long heat radiating sheet 11. In this way, the 13 long heat radiating sheets 11 are sandwiched and woven from the front and back directions by each of the eight connecting members 13a and the eight connecting members 13b arranged in a direction substantially perpendicular to the 13 long heat radiating sheets 11. It is in a state.

An adhesive is preferably interposed at the contact portion between the connecting members 13a and 13b and the long heat radiating sheet 11. Therefore, the heat radiating structure 10 does not easily collapse. The connecting members 13a and 13b and the long heat radiating sheet 11 may be fixed by a fixing means other than the adhesive. Further, at the intersection of the connecting members 13a and 13b and the long heat radiating sheet 11, the long heat radiating sheet 11 may be bound and fixed by the connecting members 13a and 13b. Further, either the connecting member 13a or the connecting member 13b may be continuously arranged along the length direction of the long heat radiating sheet 11 without alternately arranging the connecting member 13a and the connecting member 13b in order.

2. Battery (1) First Embodiment FIG. 2 shows a vertical sectional view of a battery according to the first embodiment of the present invention. FIG. 3 shows a perspective view of a situation in which the battery cell in FIG. 2 is arranged on the heat radiating structure.

As shown in FIG. 2, the heat radiating structure 10 is provided in the battery 20 equipped with one or a plurality of battery cells 30. The heat radiating structure 10 is arranged at least between the battery cell 30 and the cooling member 25. The heat radiating structure 10 is located between the battery cell 30 and the cooling member 25, which is an example of a heat source in the battery 20, and is a heat radiating structure for conducting heat from the battery cell 30 to the cooling member 25. As shown in FIG. 2, the battery 20 is a battery having a plurality of battery cells 30 as heat sources in a housing 21 in which the cooling member 25 is brought into contact with the battery 20. To conduct heat from the battery cell 30 to the cooling member 25 between the end of the battery cell 30 near the cooling member 25 and a part (bottom 22) of the housing 21 near the cooling member 25. The heat radiating structure 10 is provided.

Next, the configuration of the battery 20 will be described in more detail. In this embodiment, the battery 20 is, for example, a battery for an electric vehicle and includes a large number of battery cells 30. The battery 20 includes a bottomed housing 21 that opens to one side. The housing 21 is preferably made of aluminum or an aluminum-based alloy. The battery cell 30 is arranged inside 24 of the housing 21. Electrodes 31 and 32 (see FIG. 3) are projected above the battery cell 30. The plurality of battery cells 30 are preferably brought into close contact with each other in the housing 21 by applying a force in the direction of compression from both sides thereof using screws or the like (not shown). The bottom 22 of the housing 21 is provided with one or more water cooling pipes 23 for flowing cooling water, which is an example of the cooling member 25. The battery cell 30 is arranged in the housing 21 so as to sandwich the heat radiating structure 10 with the bottom portion 22. In the battery 20 having such a structure, the battery cell 30 transfers heat to the housing 21 through the heat radiating structure 10 and is effectively removed by water cooling. The cooling member 25 is not limited to cooling water, but is interpreted to include an organic solvent such as liquid nitrogen and ethanol. The cooling member 25 is not limited to a liquid under the conditions used for cooling, and may be a gas or a solid.

As shown in FIG. 3, when the bottom portion of the battery cell 30 is arranged on the heat radiating structure 10, the long heat radiating sheet 11 constituting the heat radiating structure 10 is slightly oriented even if the bottom portion is not completely flat. It becomes easier to adhere to the bottom while changing. As the battery cell 30, a battery cell 30 in which an electrolytic solution is sealed in a container having a laminated structure in which a metal sheet such as aluminum is sandwiched between resin sheets can be preferably used. The weight of the battery 20 can be reduced by reducing the weight of the battery cell 30. When a battery cell 30 having such a soft container is used, a gap is formed between the bottom of the battery cell 30 and the heat sink in the high hardness heat sink, and heat conduction tends to deteriorate. On the other hand, if the heat-dissipating sheet in which the heat conductive material 11b is dispersed in the rubber-like elastic body 11a is brought into contact with the battery cell 30, the weight of the heat-dissipating sheet is too large, and it is difficult to reduce the weight of the battery 20. In the heat radiating structure 10 according to this embodiment, the long heat radiating sheet 11 is thinned out, and a connecting member 13 lighter than the thinned out portion is used for connecting the long heat radiating sheet 11. In addition, if the connecting member 13 functions as a heat conductive means, it is possible to obtain a heat radiating structure 10 which is excellent in both weight reduction and heat radiating property.

(2) Second Embodiment FIG. 4 shows a vertical sectional view of a battery according to a second embodiment of the present invention and an enlarged view of a part B.

In the battery 20a according to the second embodiment, the heat radiating structure 10 is arranged between the plurality of battery cells 30 and the cooling member 25, and the heat radiating structure 10 is also arranged between the plurality of battery cells 30. There is. The heat radiating structure 10 is a single sheet having a long shape in the direction (width direction) in which a plurality of long heat radiating sheets 11 are arranged. The heat radiating structure 10 is arranged inside 24 of the housing 21 so as to extend from one end 17 along the inner bottom surface of the bottom portion 22 and reach the other end 18 so as to sew a gap between the battery cells 30. .. However, the heat radiating structure 10 may be separated into a sheet laid on the inner bottom surface of the bottom portion 22 and one or a plurality of sheets inserted between the battery cells 30 as a plurality of sheets. Except for the above points in the battery 20a, the configuration of the battery 20 according to the first embodiment is common. Therefore, the common parts will be described in the first embodiment, and the duplicated description in this embodiment will be omitted.

3. 3. Deformation Examples of the Heat Dissipation Structure Next, various deformation examples of the heat dissipation structure 10 will be described.

FIG. 5A shows a partially enlarged front view of the heat dissipation structure of FIG. 1B. FIG. 5B shows a partially enlarged front view of a modified example of the heat dissipation structure of FIG. 1B. FIG. 5C shows a partially enlarged front view of a modified example of the heat dissipation structure of FIG. 1B.

In the heat radiating structure 10 of FIG. 5A, in a state where a plurality of long heat radiating sheets 11 are arranged in the width direction thereof, the connecting members 13a and the connecting members 13b are alternately arranged in the length direction of the long heat radiating sheet 11. The connecting members 13a and 13b are provided so as to alternately sew the front side surface and the back side surface of the long heat radiating sheet 11. The heat radiating structure 10 has a structure in which a long heat radiating sheet 11 and a connecting member 13 are plain-woven.

On the other hand, in the heat radiating structure 10a of FIG. 5B, in a state where a plurality of long heat radiating sheets 11 are arranged in the width direction thereof, the connecting member 13a and the connecting member 13b are arranged in the width direction thereof, and the length of the long heat radiating sheet 11 is long. Arranged in the direction, the connecting member 13a is fixed to one surface (front surface) of all the elongated heat radiating sheets 11, and the connecting member 13b is fixed to the other surface (back surface) of all the elongated heat radiating sheets 11. ) Is fixed. The connecting member 13a and the connecting member 13b may be one or a plurality of each. The connecting members 13a and 13b and the long heat radiating sheet 11 are fixed with an adhesive or the like so that the long heat radiating sheet 11 does not move freely.

Further, the heat radiating structure 10b of FIG. 5C includes a connecting member 13 having a plurality of bag-shaped portions into which each of the long heat radiating sheets 11 is inserted in a state where a plurality of long heat radiating sheets 11 are arranged in the width direction thereof. Be prepared. The connecting member 13 and the long heat radiating sheet 11 are preferably fixed with an adhesive or the like, but may not be fixed. When the connecting member 13 is made of a highly flexible material, the distance between the long heat radiating sheets 11 can be easily changed, and the shape of the heat radiating structure 10b can be freely changed.

FIG. 6A shows a schematic plan view of the heat dissipation structure of FIG. 1A. FIG. 6B shows a schematic plan view of a modified example of the heat dissipation structure of FIG. 1A. FIG. 6C shows a schematic plan view of a modified example of the heat dissipation structure of FIG. 1A. FIG. 6D shows a schematic plan view of a modified example of the heat dissipation structure of FIG. 1A.

As described above, the heat radiating structure 10 of FIG. 6A has a structure in which a plurality of long heat radiating sheets 11 and a plurality of connecting members 13a and 13b are plain-woven. The heat radiating structure 10c of FIG. 6B is common to the heat radiating structure 10 of FIG. 6A in that it has a plain weave structure, but the long heat radiating sheet 11 reciprocates in a bellows shape (may be referred to as one sheet). It differs from the heat radiating structure 10 of FIG. 6A in that it is a sheet. Further, the heat radiating structure 10d of FIG. 6C is common to the heat radiating structure 10 of FIG. 6A in that it has a plain weave structure, but one sheet (may be referred to as one sheet) in which the connecting member 13 reciprocates in a bellows shape. This is different from the heat dissipation structure 10 of FIG. 6A. Further, the heat radiating structure 10e of FIG. 6D is common to the heat radiating structure 10 of FIG. 6A in that it has a plain weave structure, but one long heat radiating sheet 11 and one connecting member 13 are both bellows-shaped. It differs from the heat radiating structure 10 of FIG. 6A in that it is a reciprocating sheet.

As described above, it does not matter whether the number of long heat radiating sheets 11 constituting the heat radiating structures 10, 10c, 10d, 10e is one or a plurality. The same applies to the connecting member 13. It suffices if a plurality of long heat radiating sheets 11 can be arranged side by side in the width direction.

4. Other Embodiments The heat-dissipating structure according to the present invention and a preferred embodiment of the battery provided with the heat-dissipating structure have been described above, but the present invention is not limited to the above-described embodiment and can be variously modified and implemented.

The long heat-dissipating sheet 11 and the connecting member 13 are not limited to plain weave, and a heat-dissipating structure may be formed by another weaving method (for example, twill weave, satin weave, etc.). In that case, at least one of the long heat-dissipating sheet 11 and the connecting member 13 constituting the heat-dissipating structure may be one, such as the heat-dissipating structures 10c, 10d, and 10e.

A heat radiating structure is produced by using each long heat radiating sheet 11 and each connecting member 13 constituting the heat radiating structures 10c, 10d, 10e of FIGS. 6B to 6D so as to be viewed from the front of FIG. 5B. Is also good. Further, in the configuration in which the heat radiating structures 10, 10a, 10b, 10c, 10d, 10e are interposed between the cooling member 25 and the battery cell 30, the pipe through which the cooling member 25 such as the water cooling pipe 23 flows and the battery cell 30 are used. It can be rephrased as a configuration in which the heat radiating structures 10, 10a, 10b, 10c, 10d, and 10e are interposed between the two.

Further, the plurality of components of each of the above-described embodiments can be freely combined except when they cannot be combined with each other. For example, the battery 20a may be equipped with the various heat dissipation structures described above, including the heat dissipation structures 10a, 10b, 10c, 10d, and 10e. The plurality of heat radiating structures mounted on the battery 20a may be any two or more of the above.

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

Claims (7)

One or more long heat-dissipating sheets containing a heat conductive material having a higher thermal conductivity than the rubber-like elastic body in the rubber-like elastic body, and
In a state where one long heat-dissipating sheet is reciprocated at a predetermined interval, or when two or more long heat-dissipating sheets are arranged side by side at a predetermined interval, they are crossed and connected to the long heat-dissipating sheet. With one or more connecting members
With
A heat radiating structure in which the total weight of the connecting members is smaller than the total weight of the long heat radiating sheet. The heat radiating structure according to claim 1, wherein the thickness of the connecting member is smaller than the thickness of the long heat radiating sheet. The heat radiating structure according to claim 1 or 2, wherein the connecting member is arranged so as to sew both the front and back surfaces of the plurality of long heat radiating sheets. The connecting member is arranged so as to be sewn in order from the front surface of the long heat radiating sheet at a predetermined position to the back surface of the adjacent long heat radiating sheet, and the connecting member and the long heat radiating sheet are plain-woven. The heat radiating structure according to claim 3. The heat radiating structure according to any one of claims 1 to 4, wherein the connecting member is a sheet containing a metal, a carbon-based material, or ceramics. The heat radiating structure according to any one of claims 1 to 5,
With a battery equipped with one or more battery cells,
With
The heat radiating structure is a battery arranged at least between the battery cell and a cooling member capable of cooling the battery cell. Equipped with a plurality of the battery cells
The battery according to claim 6, wherein the heat radiating structure is further arranged between a plurality of the battery cells.

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