CN213071222U

CN213071222U - Heat radiation structure and storage battery mounted with the same

Info

Publication number: CN213071222U
Application number: CN201990000517.7U
Authority: CN
Inventors: 须田工
Original assignee: Shin Etsu Polymer Co Ltd
Current assignee: Shin Etsu Polymer Co Ltd; Shin Etsu Chemical Co Ltd
Priority date: 2018-03-13
Filing date: 2019-01-29
Publication date: 2021-04-27
Anticipated expiration: 2029-01-29
Also published as: JP6944588B2; WO2019176344A1; JPWO2019176344A1

Abstract

Provided are a heat dissipation structure which is lightweight and has excellent heat dissipation efficiency, and a battery provided with the heat dissipation structure. The utility model relates to a heat radiation structure body (10) and possess its battery (20), heat radiation structure body (10) possess: 1 or 2 or more long heat-dissipating sheets (11) each of which comprises a heat-conductive material (11b) having a higher thermal conductivity than the rubber-like elastic body (11a) in the rubber-like elastic body (11 a); and 1 or 2 or more connecting members (13) that are cross-connected to the long heat-dissipating sheets (11) in a state where 1 long heat-dissipating sheet (11) is arranged in a reciprocating manner at a predetermined interval or in a state where 2 or more long heat-dissipating sheets (11) are arranged at a predetermined interval, wherein the total weight of the connecting members (13) is smaller than the total weight of the long heat-dissipating sheets (11).

Description

Heat radiation structure and storage battery mounted with the same

Cross Reference to Related Applications

The present application claims priority based on Japanese patent application 2018-044917 filed on 3/13/2018, the contents of which are incorporated in the present 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 dissipation structure for promoting heat dissipation from a heat generating body and a battery having the heat dissipation structure mounted thereon.

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.

To realize the quick heat dissipation of battery, adopted following structure: a water cooling tube is disposed in a metal housing having excellent thermal conductivity such as aluminum, a plurality of battery cells are disposed in the housing, and a rubber sheet having adhesion is interposed between the battery cells and a bottom surface of the housing. The following description refers to the accompanying drawings.

Fig. 7 is a schematic cross-sectional view of a conventional battery. The battery 100 of fig. 7 includes a plurality of battery cells 101 on an inner bottom surface 103 of a frame 102 made of aluminum or an aluminum-based alloy. A water cooling pipe 105 through which cooling water flows is provided at a bottom portion 104 of the housing 102. The battery unit 101 is fixed in the housing 102 with a rubber sheet (e.g., a room temperature curing silicone rubber sheet) 106 interposed between the battery unit and the bottom portion 104. In the battery 100 having such a configuration, the battery cell 101 transfers heat to the housing 102 through the rubber sheet 106, and is effectively cooled by water cooling.

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

However, in order to meet the requirement for weight reduction of the battery 100 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 does not increase the thermal resistance (the property of deteriorating the thermal conductivity) of the battery cell 101 and the rubber sheet 106. This is the same not only for battery 100 but also for heat removal from other heat generating elements such as circuit boards and electronic device bodies.

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

Means for solving the problems

(1) A heat dissipation structure according to an embodiment for achieving the above object includes: 1 or 2 or more long heat-dissipating sheets each comprising a heat-conductive material in a rubber-like elastic material; and 1 or 2 or more connecting members that cross-connect the long heat-dissipating sheets in a state where 1 long heat-dissipating sheet is arranged reciprocally at a given interval or in a state where 2 or more long heat-dissipating sheets are arranged at a given interval, the total weight of the connecting members being smaller than the total weight of the long heat-dissipating sheets.

(2) In the heat radiation structure according to the other embodiment, the thickness of the coupling member is preferably smaller than the thickness of the long heat radiation sheet.

(3) In the heat radiation structure according to the other embodiment, the coupling member is preferably arranged to stitch both front and back surfaces of the long heat radiation sheets.

(4) In the heat radiation structure according to the other embodiment, the connecting member is preferably arranged to stitch the long heat radiation sheet at a predetermined position from the front surface of the long heat radiation sheet to the back surface of the adjacent long heat radiation sheet in this order, and the connecting member and the long heat radiation sheet are preferably plain-woven.

(5) A battery according to an embodiment includes the heat radiation structure described in any one of the above and 1 or more battery cells, and the heat radiation structure is disposed at least between the battery cells and a cooling member that can cool the battery cells.

(6) In the battery according to another embodiment, it is preferable that the battery includes a plurality of battery cells, and the heat dissipation structure is further disposed between the plurality of battery cells.

Effect of the utility model

According to the present invention, a heat radiation structure body that is light in weight and has excellent heat radiation efficiency and a battery that includes the heat radiation structure body can be provided.

Drawings

Fig. 1A shows a plan view of a heat radiation structure according to a preferred embodiment of the present invention and an enlarged view of a part a.

Fig. 1B is a front view of a heat radiation structure according to a preferred embodiment of the present invention.

Fig. 2 is a longitudinal sectional view of a battery according to a first embodiment of the present invention.

Fig. 3 is a perspective view showing a state in which the battery cell in fig. 2 is disposed on the heat dissipating structure.

Fig. 4 is a vertical cross-sectional view of a battery according to a second embodiment of the present invention and an enlarged view of a part B.

Fig. 5A illustrates a partially enlarged front view of the heat dissipation structure of fig. 1B.

Fig. 5B is a partially enlarged front view showing a modification of the heat radiation structure of fig. 1B.

Fig. 5C is a partially enlarged front view showing a modification of the heat radiation structure of fig. 1B.

Fig. 6A shows a schematic plan view of the heat dissipating structure of fig. 1A.

Fig. 6B is a schematic plan view showing a modification of the heat dissipating structure shown in fig. 1A.

Fig. 6C is a schematic plan view showing a modification of the heat dissipating structure shown in fig. 1A.

Fig. 6D is a schematic plan view showing a modification of the heat dissipating structure shown in fig. 1A.

Fig. 7 is a schematic cross-sectional view of a conventional battery.

Description of the reference symbols

10. 10a, 10b, 10c, 10d, 10e heat dissipating structures, 11 long heat dissipating sheets, 11a rubber-like elastic body, 11b heat conductive material, 13a, 13b connecting members, 20a batteries, 25 cooling members, 30 battery cells.

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 structure

Fig. 1A shows a plan view of a heat radiation structure according to a preferred embodiment of the present invention and an enlarged view of a part a. Fig. 1B is a front view of a heat radiation structure according to a preferred embodiment of the present invention.

The heat radiation structure 10 according to the present embodiment includes: 2 or more long heat radiation sheets 11 each including a heat conductive material 11b having higher thermal conductivity than the rubber-like elastic body 11a in the rubber-like elastic body 11 a; and 2 or more connecting members 13 that cross-connect the long heat-dissipating sheets 11 in a state where the long heat-dissipating sheets 11 are arranged at a predetermined interval. In the present specification, "elongated" refers to a shape elongated in one direction. The long heat dissipation sheet 11 is a rectangular parallelepiped long in one direction, and is an elongated sheet having a thickness smaller than its width.

The rubber-like elastic body 11a preferably includes a thermosetting elastomer such as silicone rubber, urethane rubber, acrylate rubber, isoprene rubber, ethylene-propylene rubber, natural rubber, ethylene-propylene-diene rubber, nitrile rubber (NBR), or styrene-butadiene rubber (SBR), a thermoplastic elastomer such as polyurethane, ester, styrene, olefin, butadiene, or fluorine, or a composite thereof. The rubber-like elastic body 11a is preferably made of a material having high heat resistance to such an extent that it does not melt or decompose by heat from a heat source to be radiated and can maintain its form. In the present embodiment, the rubber-like elastic body 11a is more preferably a silicone rubber, an acrylate rubber, a urethane rubber, or a compound of any 2 or more of these.

Preferably, the heat conductive material (also referred to as heat conductive filler) 11b is metal, carbon-based material, or 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 11b may be contained at any ratio with respect to the entire volume of the long heat dissipation sheet 11, but is preferably in the range of 2 to 70 vol%, more preferably 5 to 20 vol%. The thermally conductive material 11b may be a filler having any shape such as a granular shape, a needle shape, a fibrous shape, and a plate shape. The long heat-radiating sheet 11 is preferably adhesive to a heat-generating body (for example, a battery cell described later) because it needs to be in close contact with the heat-generating body. Therefore, the rubber hardness measured by an ASKER rubber durometer type C (ASKAR-C) of the long heat dissipation sheet 11 is preferably 10 to 20 degrees.

In the present specification, "crossing" refers to a positional relationship other than parallel, and is not limited to a relationship of crossing at right angles, and includes a case of crossing at an arbitrary angle as long as it crosses. In addition, "given interval" does not refer to a specific width, and in addition, does not refer to a constant width. In the present embodiment, the long heat dissipation sheets 11 are preferably arranged at a predetermined interval equal to or less than the width of the sheet 11.

The heat radiation structure 10 according to the present embodiment is a sheet-like heat radiation structure having the following structure: 13 long heat-dissipating sheets 11 are arranged at given intervals, and these long heat-dissipating sheets 11 are connected by 16 connecting members 13 arranged toward the length of the long heat-dissipating sheets 11. The total weight of the coupling member 13 is smaller than the total weight of the elongated heat radiation sheet 11. This is because it is necessary to further reduce the weight of the heat radiation structure 10 as compared with the case where the heat radiation structure is constituted by only the long heat radiation sheet 11. In addition, as compared with the case where the outer shape region of the heat radiation structure 10 is constituted only by the long heat radiation sheet 11, the number, form, and constituent material of the coupling members 13 are preferably selected so that the heat radiation structure 10 of the present embodiment is lighter in weight. Further, the density of the coupling member 13 is preferably lower than the density of the long heat dissipation sheet 11. The thickness of the coupling member 13 is preferably smaller than the thickness of the elongated heat radiation sheet 11. The number of the long heat dissipation sheets 11 is not limited to 13, and may be 2 or more. The number of the coupling members 13 may be 2 or more, and is not limited to 16.

The connecting member 13 is arranged to stitch both front and back surfaces of the long heat dissipation sheets 11. More specifically, the coupling members 13 are arranged to be sewn in order from the front surface of the long heat dissipation sheet 11 at a given position to the back surface of the adjacent long heat dissipation sheet 11. In the present embodiment, the heat radiation structure 10 has a structure in which the connecting member 13 and the long heat radiation sheet 11 are flat-woven. The connecting member 13 is a sheet material made of metal, carbon-based material, or ceramic. More preferably, the connecting member 13 is a composite sheet in which a filler of metal, carbon material, or ceramic is dispersed in a sheet made of a thermoplastic resin or cellulose as a base material. The metal, carbon-based material, or ceramic constituting the filler is the same as the candidate material for the heat conductive material 11b in the long heat radiation sheet 11. The connecting member 13 preferably has a function of transferring heat between the long heat dissipation sheets 11 in addition to a function of connecting and fixing the long heat dissipation sheets 11. The coupling member 13 is preferably a member having lower adhesiveness than the elongated heat-dissipating sheet 11. As described above, the long heat dissipation sheet 11 is preferably a sheet exhibiting high adhesiveness. However, if the adhesiveness of the long heat-dissipating sheet 11 is too high, the sheet may be easily adhered to the heating element and may be difficult to handle. For example, when the heat radiation structure 10 is inserted into a battery using a heat generating body as a battery cell, the excessive adhesiveness of the long heat radiation sheet 11 may make the insertion difficult. When the long heat radiation sheet 11 is woven with the connecting member 13 having low adhesiveness, the adhesiveness of the entire heat radiation structure 10 can be reduced. The connecting member 13 also has such a function.

The coupling members 13a of the coupling members 13 are arranged in the order of front, back, and front alternately in contact with the front and back surfaces of the long heat dissipating sheet 11 from the left side toward the right side of fig. 1A among the 13 long heat dissipating sheets 11 constituting the heat dissipating structure 10 of fig. 1A. The coupling members 13b of the coupling members 13 are arranged in the order of back, front, and back alternately in contact with the front and back surfaces of the long heat dissipating sheet 11 from the left side toward the right side of fig. 1A among the 13 long heat dissipating sheets 11 constituting the heat dissipating structure 10 of fig. 1A. The coupling members 13a and the coupling members 13b are alternately arranged in the longitudinal direction of the long heat dissipation sheet 11. In this way, 13 long heat radiation sheets 11 are sandwiched and woven from 8 coupling members 13a and 8 coupling members 13b arranged in a direction substantially perpendicular to the direction of the heat radiation sheets.

An adhesive is preferably interposed between the connecting

members

13a and 13b and the long heat dissipation sheet 11 at the contact portions. Therefore, the heat radiation structure 10 is not easily deformed. The

connection members

13a and 13b and the long heat dissipation sheet 11 may be fixed by fixing means other than an adhesive. At the intersection positions of the connecting

members

13a, 13b and the long heat-dissipating sheet 11, the long heat-dissipating sheet 11 can be bound and fixed by the connecting

members

13a, 13 b. In addition, the connecting members 13a and the connecting members 13b may be continuously arranged without sequentially alternating the connecting members 13a and the connecting members 13b in the longitudinal direction of the elongated heat dissipation sheet 11.

2. Storage battery

(1) First embodiment

Fig. 2 is a longitudinal sectional view of a battery according to a first embodiment of the present invention. Fig. 3 is a perspective view showing a state in which the battery cell in fig. 2 is disposed on the heat radiation structure.

As shown in fig. 2, heat dissipation structure 10 is mounted on battery 20 having 1 or more battery cells 30 mounted thereon. Heat radiation structure 10 is disposed at least between battery cell 30 and cooling member 25. The heat radiation structure 10 is a heat radiation structure that is positioned between the battery cell 30, which is an example of a heat source in the battery 20, and the cooling member 25 and conducts heat from the battery cell 30 to the cooling member 25. As shown in fig. 2, the battery 20 is a battery including a plurality of battery cells 30 as a heat source in a housing 21 that contacts a cooling member 25. A heat radiation structure 10 for conducting heat from the battery cell 30 to the cooling member 25 is provided between an end portion of the battery cell 30 on the side closer to the cooling member 25 and a part (bottom portion 22) of the frame 21 on the side closer to the cooling member 25.

Next, the structure of the battery 20 will be described in more detail. In the present embodiment, the battery 20 is, for example, a battery for an electric vehicle, and includes a plurality of battery cells 30. The battery 20 includes a bottomed frame 21 having one opening. The frame body 21 is preferably made of aluminum or an aluminum-based alloy. The battery cell 30 is disposed in the interior 24 of the housing 21. Electrodes 31 and 32 (see fig. 3) protrude from the upper side of the battery cell 30. The plurality of battery cells 30 are preferably urged by screws or the like from both sides thereof in a direction of compression in the housing 21 so as to be in close contact with each other (not shown). The bottom 22 of the housing 21 is provided with 1 or more water cooling tubes 23 for flowing cooling water as an example of the cooling means 25. Battery unit 30 is disposed in frame 21 so as to interpose heat radiation structure 10 with bottom 22. In battery 20 having such a configuration, battery cell 30 transfers heat to housing 21 through heat dissipation structure 10, and efficiently removes heat by water cooling. Further, the cooling member 25 is explained as not being limited to cooling water but also including organic solvents such as liquid nitrogen, ethanol, and the like. The cooling member 25 is not limited to a liquid, and may be a gas or a solid in a condition for cooling.

As shown in fig. 3, when the bottom of the battery cell 30 is disposed on the heat radiation structure 10, the elongated heat radiation sheet 11 constituting the heat radiation structure 10 is likely to be in close contact with the bottom while slightly changing its orientation even if the bottom is not perfectly flat. The battery cell 30 can be preferably applied to a battery cell in which an electrolyte is sealed in a container having a laminated structure in which a sheet made of metal such as aluminum is sandwiched by a resin sheet. The weight reduction of the battery unit 30 can reduce the weight of the battery 20. In the case of using such a battery cell 30 having a flexible container, a gap is formed between the bottom of the battery cell 30 and the heat sink in the heat sink having high hardness, and heat conduction is likely to deteriorate. On the other hand, if the battery cell 30 is brought into contact with only the heat dissipation sheet in which the thermally conductive material 11b is dispersed in the rubber-like elastic body 11a, the weight of the heat dissipation sheet becomes excessively large, and it becomes difficult to reduce the weight of the battery 20. The heat radiation structure 10 according to the present embodiment uses, as a state in which the long heat radiation sheet 11 is removed, the connecting member 13 that is lighter than the portion removed therebetween for connecting the long heat radiation sheet 11. Further, if the connecting member 13 functions as a heat conduction means, the heat radiation structure 10 having a light weight and excellent heat radiation performance can be obtained.

(2) Second embodiment

In battery 20a according to the second embodiment, heat radiation structure 10 is disposed not only between the plurality of battery cells 30 and cooling member 25, but also between the plurality of battery cells 30. The heat radiation structure 10 is 1 sheet having a shape that is long in a direction (width direction) in which a plurality of long heat radiation sheets 11 are arranged. Heat dissipating structure 10 is disposed in interior 24 of frame 21 so as to extend from one end 17 along the inner bottom surface of bottom portion 22 and reach the other end 18 with gaps between battery cells 30 stitched together. The heat dissipation structure 10 may be separated into a plurality of sheets, that is, a sheet laid on the inner bottom surface of the bottom portion 22 and 1 or more sheets inserted between the battery cells 30. The battery 20a has the same configuration as the battery 20 according to the first embodiment except for the above-described points. Therefore, the description of the common portions in the first embodiment is omitted, and the redundant description in the present embodiment is omitted.

3. Modification of heat radiation structure

Next, various modifications of the heat radiation structure 10 will be described.

Fig. 5A illustrates a partially enlarged front view of the heat dissipation structure of fig. 1B. Fig. 5B is a partially enlarged front view showing a modification of the heat radiation structure of fig. 1B. Fig. 5C is a partially enlarged front view showing a modification of the heat radiation structure of fig. 1B.

The heat radiation structure 10 of fig. 5A includes the connecting

members

13a, 13b such that, in a state where a plurality of long heat radiation sheets 11 are arranged in the width direction thereof, the connecting members 13a and the connecting members 13b are alternately arranged in the longitudinal direction of the long heat radiation sheets 11, and the front side surface and the back side surface of the long heat radiation sheets 11 are alternately sewn together. The heat radiation structure 10 has a structure in which a long heat radiation sheet 11 and a coupling member 13 are flat-woven.

In contrast, in the heat radiation structure 10a of fig. 5B, in a state where a plurality of long heat radiation sheets 11 are arranged in the width direction, the coupling member 13a and the coupling member 13B are arranged in the longitudinal direction of the long heat radiation sheets 11, the coupling member 13a is fixed to one surface (front side surface) of all the long heat radiation sheets 11, and the coupling member 13B is fixed to the other surface (back side surface) of all the long heat radiation sheets 11. Each of the

coupling members

13a and 13b may be 1 sheet or a plurality of sheets. The

coupling members

13a and 13b and the long heat-dissipating sheet 11 are fixed by an adhesive or the like so that the long heat-dissipating sheet 11 does not move freely.

The heat radiation structure 10b of fig. 5C includes a connecting member 13, and the connecting member 13 includes a plurality of bag-like portions into which the long heat radiation sheets 11 are inserted in a state where a plurality of long heat radiation sheets 11 are arranged in the width direction. The coupling member 13 and the elongated heat dissipation sheet 11 are preferably fixed by an adhesive or the like, but may not be fixed. When the connecting member 13 is made of a material having high flexibility, the interval between the long heat radiation sheets 11 can be easily changed, and the shape of the heat radiation structure 10b can be freely changed.

Fig. 6A shows a schematic plan view of the heat dissipating structure of fig. 1A. Fig. 6B is a schematic plan view showing a modification of the heat dissipating structure shown in fig. 1A. Fig. 6C is a schematic plan view showing a modification of the heat dissipating structure shown in fig. 1A. Fig. 6D is a schematic plan view showing a modification of the heat dissipating structure shown in fig. 1A.

The heat radiation structure 10 of fig. 6A has a structure in which the plurality of long heat radiation sheets 11 and the plurality of

coupling members

13a and 13b are flat-woven as described above. The heat radiation structure 10c of fig. 6B is common to the heat radiation structure 10 of fig. 6A in terms of a flat-woven structure, but is different from the heat radiation structure 10 of fig. 6A in terms of 1 (may also be referred to as 1) sheet that is folded back and forth in a long heat radiation sheet 11. The heat radiation structure 10d in fig. 6C is common to the heat radiation structure 10 in fig. 6A in terms of a flat woven structure, but is different from the heat radiation structure 10 in fig. 6A in terms of 1 (may also be referred to as 1) sheet that is folded back and forth in the coupling member 13. Further, the heat radiation structure 10e of fig. 6D is common to the heat radiation structure 10 of fig. 6A in terms of a flat woven structure, but is different from the heat radiation structure 10 of fig. 6A in terms of 1 elongated heat radiation sheet 11 and 1 connecting member 13 both being sheets folded back and forth.

In this way, the number of the long heat radiation sheets 11 constituting the

heat radiation structures

10, 10c, 10d, and 10e is not limited to 1. The same applies to the connecting member 13. The long heat dissipation sheet 11 may be arranged such that a plurality of the heat dissipation sheets are arranged in the width direction.

4. Other embodiments

Although the preferred embodiments of the heat dissipating structure and the battery including the same according to the present invention have been described above, the present invention is not limited to the above embodiments and can be implemented by being modified in various ways.

The long heat radiation sheet 11 and the coupling member 13 are not limited to the plain weave, and the heat radiation structure may be configured by another weave (for example, a twill weave, a satin weave (satin weave), or the like). In this case, at least one of the elongated heat dissipation sheet 11 and the connecting member 13 constituting the heat dissipation structure may be provided as one sheet, as in the case of the

heat dissipation structures

10c, 10d, and 10 e.

As seen from the front of fig. 5B, the heat dissipation structure can be produced using the long heat dissipation sheets 11 and the connecting members 13 that constitute the

heat dissipation structures

10c, 10D, and 10e of fig. 6B to 6D. The configuration in which heat

dissipation structures

10, 10a, 10b, 10c, 10d, and 10e are interposed between cooling member 25 and battery cell 30 can be alternatively referred to as a configuration in which heat

dissipation structures

10, 10a, 10b, 10c, 10d, and 10e are interposed between a tube through which cooling member 25 flows, such as water cooling tube 23, and battery cell 30.

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. For example, the various heat dissipation structures described above including

heat dissipation structures

10a, 10b, 10c, 10d, and 10e may be mounted on battery 20 a. The plurality of heat dissipation structures mounted on battery 20a may be any of 2 or more types.

(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 dissipation structure is characterized in that,

the heat dissipation structure is provided with:

1 or 2 or more long heat-dissipating sheets each comprising a heat-conductive material in a rubber-like elastic material; and

1 or 2 or more connecting members that cross-connect the long heat dissipating sheets in a state where 1 long heat dissipating sheet is arranged in a reciprocating manner at a predetermined interval or in a state where 2 or more long heat dissipating sheets are arranged at a predetermined interval,

the total weight of the joining member is less than the total weight of the long heat-dissipating sheet.

2. The heat dissipating structure according to claim 1,

the thickness of the coupling member is smaller than the thickness of the long heat dissipation sheet.

3. The heat dissipating structure according to claim 1 or 2,

the coupling member is configured to stitch both front and back surfaces of the long heat dissipation sheets.

4. The heat dissipating structure of claim 3,

the joining member is configured to stitch the long heat dissipation sheet in order from the front surface of the long heat dissipation sheet at a predetermined position to the back surface of the adjacent long heat dissipation sheet, and to weave the joining member and the long heat dissipation sheet flat.

5. A secondary battery is characterized in that the battery is provided with a battery case,

the storage battery is provided with:

the heat dissipating structure of any one of claims 1 to 4; and

1 or a plurality of battery cells, and,

the heat radiation structure is disposed at least between the battery cell and a cooling member capable of cooling the battery cell.

6. The battery according to claim 5,

the battery is provided with a plurality of the battery cells,

the heat dissipation structure is also disposed between the plurality of battery cells.