Heat exchange device

Abstract

To provide a heat exchange device with which, when assembling a constituent body consisting of a heat exchange target member and the heat exchange device, the constituent body can be assembled through simple steps and which is improved in production efficiency.SOLUTION: A heat exchange device comprises a frame 1, a bag body 2 and a sealing member 3. A channel for a heat exchange liquid is formed on one principal face of the frame, the bag body in contact with a heat exchange target member is disposed on the other principal face, and the heat exchange liquid is fluidized in the bag body.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a heat exchange device. [Background technology]

[0002] Conventionally, various heat exchange devices that perform heat exchange with a heat exchange target member have been proposed. For example, a heat exchange device configured to exchange heat with a heat exchange target member is disclosed in Patent Document 1. Also, a heat exchanger is disclosed in Patent Document 2. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-027020 [Patent Document 2] JP 2021-110471 A Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, the heat exchange module is disposed adjacent to the single cell as the heat exchange target member, thereby performing the function of exchanging heat between the heat exchange target member and the heat exchange liquid. Therefore, when there are multiple heat exchange target members, a structure in which the heat exchange target members and the heat exchange modules are alternately combined is required.

[0005] In Patent Document 1, the secondary battery housing assembly process required a process of combining and arranging unit cells and heat exchange modules alternately and joining pipes for a heat exchange medium connected to each heat exchange module to adjacent modules, which could make the process of assembling the secondary battery housing complicated.

[0006] In Patent Document 2, an outer laminate material having a resin heat-sealing layer provided on the inner side of a metal heat transfer layer is used, and each component, such as a tray member having a recessed portion and a flange portion and an inner fin having a continuous uneven portion, is formed, and then each component is assembled to manufacture a heat exchanger. Therefore, the process of manufacturing the heat exchanger can be complicated.

[0007] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a heat exchanger device that can be assembled in a simple process when assembling a component consisting of a heat exchange target part and a heat exchanger, and has excellent production efficiency. [Means for solving the problem]

[0008] In order to solve the above problems, a heat exchanger according to one aspect of the present invention is A frame, a bag, and a sealing member are included. the frame has a flat plate shape having a first main surface including a first direction and a second direction perpendicular to the first direction, and a second main surface spaced apart in a third direction perpendicular to the first direction and the second direction, the first main surface has a first groove portion extending in the first direction and a second groove portion parallel to the first groove portion, the sealing member is attached to the first main surface, the first groove portion and the sealing member form a first flow path through which a heat exchange liquid flows, and the second groove portion and the sealing member form a second flow path through which the heat exchange liquid flows, an inlet leading from outside the frame to the first flow path at one end of the frame in the first direction, and an outlet leading from the second flow path to the outside of the frame at the other end of the frame in the first direction, a frame opening A and a frame opening B which are paired in series in the second direction on the second main surface, a through hole A which leads from the first flow path to the frame opening A, and a through hole B which leads from the second flow path to the frame opening B, the bag body has a substantially rectangular shape in a plan view, one side of the bag body is joined to a second main surface of the frame so as to cover the frame opening A and the frame opening B, the bag body has a bag body first opening at a portion of the bag body corresponding to the frame opening A, the bag body has a bag body second opening at a portion of the bag body corresponding to the frame opening B, and the bag body is closed except for the bag body first opening and the bag body second opening, The bag first opening and the frame opening A are connected to allow the heat exchange liquid to pass through, and the bag second opening and the frame opening B are connected to allow the heat exchange liquid to pass through. Effect of the Invention

[0009] According to the heat exchange device of the present invention, when assembling a component consisting of a heat exchange target component and a heat exchange device, the assembly can be carried out in a simple process, and a heat exchange device with excellent production efficiency can be provided. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing a heat exchange device 100 according to a first embodiment. [Diagram 2] FIG. 1 is a front view showing a heat exchange device 100 according to a first embodiment. [Diagram 3] FIG. 1 is a plan view showing a heat exchange device 100 according to a first embodiment. [Figure 4] FIG. 1 is a left side view showing a heat exchange device 100 according to a first embodiment. [Diagram 5] FIG. 1 is a right side view showing a heat exchange device 100 according to a first embodiment. [Figure 6] FIG. 2 is a bottom view showing the heat exchange device 100 according to the first embodiment. [Figure 7] 4 is a cross-sectional view taken along line AA' of FIG. 3, showing the heat exchanger 100 according to the first embodiment. [Figure 8] 4 is a cross-sectional view of the heat exchanger 100 according to the first embodiment taken along the line BB' of FIG. 3. [Figure 9] FIG. 2 is a view of the frame 1 of the first embodiment as viewed from the second main surface side. [Figure 10] FIG. 2 is a diagram showing a flow path of a heat exchange liquid in the first embodiment with the bag body 2 omitted. [Figure 11] FIG. 11 is an enlarged view illustrating the joining relationship between the bag body and the frame at the opening indicated by C in FIG. [Figure 12] 13 is a view of a frame of a modified example of the first embodiment, seen from the second main surface side. FIG. [Figure 13] FIG. 11 is a diagram showing a flow path of a heat exchange liquid in a modified example of the first embodiment, with the bag body 2 omitted. [Figure 14] FIG. 11 is a view of the frame 1 of the second embodiment as viewed from the second main surface side. [Figure 15] FIG. 11 is a diagram showing a flow path of a heat exchange liquid in a second embodiment with the bag body 2 omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an embodiment of the invention will be described with reference to the drawings.

[0012] In the following description, terms indicating specific directions or positions (for example, "up," "right," and other terms including these terms) are used as necessary, but the use of these terms is for the purpose of facilitating understanding of the invention with reference to the drawings, and the meaning of these terms does not limit the technical scope of the present invention. In addition, parts with the same reference numerals appearing in multiple drawings indicate the same or equivalent parts or members.

[0013] In addition, in this disclosure, unless otherwise specified, "parallel" includes cases where two lines, sides, faces, etc. are in the range of about 0° to about ±5°. In addition, in this disclosure, "perpendicular" or "orthogonal" includes cases where two lines, sides, faces, etc. are in the range of about 90° to about ±5°, unless otherwise specified.

[0014] <First embodiment> FIG. 1 is a perspective view showing a heat exchanger 100 according to a first embodiment. FIG. 2 is a front view showing the heat exchanger 100 according to the first embodiment. FIG. 3 is a plan view of the heat exchanger according to the first embodiment. FIG. 4 is a left side view showing the heat exchanger 100 according to the first embodiment. FIG. 5 is a right side view showing the heat exchanger 100 according to the first embodiment. FIG. 6 is a bottom view showing the heat exchanger 100 according to the first embodiment. FIG. 7 is an AA' cross-sectional view of FIG. 3 showing the heat exchanger 100 according to the first embodiment. FIG. 8 is a BB' cross-sectional view of FIG. 3 showing the heat exchanger 100 according to the first embodiment. FIG. 9 is a view of the frame 1 according to the first embodiment as seen from the second main surface side. FIG. 10 is a view showing the flow path of the heat exchange liquid of the heat exchanger 100 according to the first embodiment, in which the bag body 2 is omitted and only the flow inside the bag body 2 is shown. FIG. 11 is an enlarged view illustrating the joining relationship between the bag body and the frame at the opening indicated by C in FIG. 7.

[0015] As shown in FIG. 1, the heat exchange device 100 of the first embodiment has a frame 1, a bag body 2, and a sealing member 3, and is configured so that a heat exchange target member can be brought into contact with the bag body 2 to perform heat exchange.

[0016] In the following description of the embodiment, the positional relationship of each element constituting the heat exchanger 100 may be described using three-axis orthogonal coordinates (X, Y, Z) as shown in Fig. 1. In Fig. 1, the left-right direction of the frame 1 is referred to as the X direction, the up-down direction is referred to as the Y direction, and the direction in which the bag body 2 extends from the frame 1 is referred to as the Z direction. Note that these directions are used for convenience in order to facilitate understanding of the embodiment, and the technical scope of the present invention is not limited by the meanings of these terms.

[0017] 1, the heat exchange target member is, for example, disposed between adjacent bags 2, and the Y direction of the frame 1 is positioned parallel to the heat exchange target member. Note that the position of the heat exchange device 100 relative to the heat exchange target member is not limited to that shown in FIG. 1, and it can be used, for example, such that the frame 1 is positioned above the heat exchange target member, and the bag 2 is disposed between the heat exchange target members from above to below.

[0018] <frame> As shown in FIGS. 1 to 7, in the heat exchanger 100 of the first embodiment, the frame 1 has a flat plate shape having a first main surface 6 including a first direction (X direction) and a second direction (Y direction) perpendicular to the first direction, and a second main surface 7 spaced apart in a third direction (Z direction) perpendicular to the first direction and the second direction, respectively.

[0019] 1 to 7, a frame 1 of the first embodiment has a bag body 2 on a second main surface 7 of the frame 1, and is configured so that a heat exchange target member can be brought into contact with this bag body 2 to perform heat exchange. The frame 1 has one end 8 and the other end 9 in a first direction. A sealing member 3 is attached to the first main surface 6 of the frame 1.

[0020] 1 to 7, the heat exchange device of the first embodiment has, on a first main surface 6, a first groove portion 61 extending in a first direction and a second groove portion 62 parallel to the first groove portion 61. A sealing member 3 is attached to the first main surface 6, and the first groove portion 61 and the sealing member 3 form a first flow path 63 through which the heat exchange liquid flows, and the second groove portion 62 and the sealing member 3 form a second flow path 64 through which the heat exchange liquid flows.

[0021] As shown in FIG. 3 and FIG. 7, the frame 1 has a frame opening A71 and a frame opening B72 on the second main surface 7, which are paired in series in the second direction (X direction). The frame opening A71 and the frame opening B72 are recessed in the third direction (Z-axis direction) from the second main surface 7 of the frame 1. In FIG. 3, the frame opening A71 and the frame opening B72 are shown by hatching, but this is not a cut surface, but rather shows the area of ​​each opening to make it easier to understand the arrangement of the openings. The frame 1 has a through hole A73 that leads from the first flow path 63 to the frame opening A71, and a through hole B74 that leads from the second flow path 64 to the frame opening B72. The through hole A73 is a flow path that connects the first flow path 63 and the frame opening A71, and the through hole B74 is a flow path that connects the second flow path 64 and the frame opening B72.

[0022] 3 and 7, the positions of the frame opening A71 and the first flow path 63 in the second direction may be the same or different. The through hole A73 may be positioned so as to overlap with the first flow path 63 and the frame opening A71 in the first direction and the second direction. By positioning the through hole A73 so as to overlap with the first flow path 63 and the frame opening A71 in the first direction and the second direction, the first flow path 63 and the frame opening A71 can be connected over a short distance, which is preferable.

[0023] 3 and 7, the positions of the frame opening B72 and the second flow path 64 in the second direction may be the same or different. The through-hole B74 may be positioned so as to overlap with the second flow path 64 and the frame opening B72 in the first direction and the second direction. By positioning the through-hole B74 so as to overlap with the second flow path 64 and the frame opening B72 in the first direction and the second direction, the second flow path 64 and the frame opening B72 can be connected over a short distance, which is preferable.

[0024] The frame opening A71 and the frame opening B72 may have any shape. For example, they may be rectangular or circular. The surrounding areas of the frame opening A71 and the frame opening B72 may also have any shape. For example, the surrounding areas of the frame opening A71 and the frame opening B72 may have a ribbed shape. If the surrounding areas have a ribbed shape, the joining area between the frame 1 and the bag body 2 can be increased when the bag body 2 is joined to cover the frame opening A71 and the frame opening B72, and the joining strength can be improved, which is preferable.

[0025] The frame openings paired in series in the second direction may be one pair for one frame, or multiple pairs may be provided in the first direction (X direction).

[0026] When there are a plurality of frame openings A71, the first flow path 63 may have a plurality of through holes A73 branching and communicating with the plurality of frame openings A71. When the first flow path 63 has a plurality of through holes A73 branching and communicating with the plurality of frame openings A, the heat exchange liquid can be distributed and sent to each bag body 2 via the plurality of through holes A73 and the plurality of frame openings A, which is preferable because it is possible to suppress the temperature difference between the individual bags 2. When there are a plurality of frame openings B72, the second flow path 64 may have a plurality of through holes B74 branching and connecting to the plurality of openings B72.

[0027] As shown in Figures 3 and 4, one end 8 of the frame has an inlet 4 that leads from outside the frame 1 to a first flow path 63. The number of inlets 4 may be one or more. When there are two or more inlets 4, each inlet 4 is connected to the first flow path 63, and the heat exchange liquid can be merged in the first flow path 63. When there are two or more inlets 4, more heat exchange liquid can be introduced into the frame 1, which is preferable as it can further improve the heat exchange efficiency.

[0028] As shown in Figures 3 and 5, the other end 9 of the frame has an outlet 5 leading from the second flow path 64 to the outside of the frame 1. The number of outlets 5 may be one or more. When there are two or more outlets 5, one end of the first flow path 63 can branch and be connected to each outlet 5. When there are two or more outlets 5, more heat exchange liquid can flow out of the frame 1, which is preferable as it can further improve the heat exchange efficiency.

[0029] The positions of the outlet 5 and the inlet 4 in the second direction may be the same or different.

[0030] Fig. 9 is a view of the frame 1 of the first embodiment as viewed from the second main surface side. Fig. 10 is a view showing the flow path of the heat exchange liquid in the first embodiment, with the bag body 2 omitted and only the flow inside the bag body 2 shown. In Fig. 10, a thick solid line 91 indicates the flow of the heat exchange liquid inside the frame 1. A white line 92 indicates the flow of the heat exchange liquid inside the bag body 2. In Figs. 9 and 10, the frame opening A71 and the frame opening B72 are shown by hatching, but this is not a cross section, but rather shows the area of ​​each opening to make it easier to understand the arrangement of the openings.

[0031] 7, 8 and 10, the heat exchange liquid flowing in from the inlet 4 branches in the first flow path 63 and flows through each through hole 73 to the multiple frame openings A71. The heat exchange liquid enters the multiple bags 2 from the multiple bag first openings 21 connected to the frame openings 71, circulates through the flow path region 24, and flows out to the bag second opening 22. The heat exchange liquid flows from the multiple frame openings B72 connected to the multiple bag second openings 22 through each through hole 74, and flows out of the frame from the second flow path 6 to the outlet 5.

[0032] The manufacturing method of the frame 1 is not particularly limited as long as it is a manufacturing method that can obtain a desired shape. Examples of manufacturing methods include injection molding, drilling molding, die casting, and 3D printer molding. The frame 1 may be manufactured by injection molding. By manufacturing by injection molding, it is possible to manufacture a frame 1 having a complex shape. In addition, it is preferable because mass production is possible in a short manufacturing time. When manufacturing by injection molding, it may be necessary to form an opening on the surface of the frame 1. If this opening exists, the opening can be closed by any method to form a flow path. For example, the opening can be blocked by bonding a sealing member 3 to the surface of the frame 1.

[0033] The material of the frame 1 is not particularly limited as long as the desired performance can be obtained. For example, thermoplastic resins such as polyethylene, polypropylene, ABS, polyvinyl chloride, etc. can be used. Thermoplastic resins are preferable because they are light and can be easily processed into complex shapes.

[0034] <Bag body> 4, 5, and 8, the bag body 2 has a generally rectangular shape in a plan view. As shown in Fig. 3 and 8, one side 11 of the bag body 2 is joined to the second main surface 7 of the frame 1 so as to cover the frame opening A71 and the frame opening B72.

[0035] 8, the bag body 2 has a bag body first opening 21 at a portion of the bag body corresponding to the opening A71 of the frame, and has a bag body second opening 22 at a portion of the bag body corresponding to the opening B72 of the frame. The bag body 2 is closed by a bag body closure portion 25 except for the bag body first opening 21 and the bag body second opening 22. Note that the side of the bag body means the sides of a rectangle and an area of ​​a predetermined width along the sides, and the bag body closure portion 25 is an area having a predetermined width along each side of the rectangle.

[0036] The bag first opening 21 of the bag 2 and the frame opening A71 of the frame 1 are connected to each other so that the heat exchange liquid can pass therethrough. The bag second opening 22 of the bag 2 and the frame opening B72 of the frame 1 are connected to each other so that the heat exchange liquid can pass therethrough.

[0037] The number of bags 2 may be one or more for one frame 1. A necessary number of bags may be connected depending on the number and shape of the heat exchange target members. For example, when there are multiple heat exchange target members, more bags 2 may be connected than the number of heat exchange target members. By installing more bags 2 than the number of heat exchange target members, the heat exchange target members can be sandwiched or surrounded by the multiple bags 2, which is preferable because it can be cooled more efficiently. When multiple bags 2 are connected to the frame 1, as exemplified in FIG. 1, it is preferable to connect the multiple bags 2 to the second main surface 7 of the frame 1 so that they are arranged at intervals from each other in the first direction.

[0038] 7 and 8, one side 11 of the bag body 2 is joined to the second main surface 7 of the frame 1 so as to cover the frame opening A71 and the frame opening B72, and the bag body 2 has the other side 12 facing the one side 11 and spaced apart in the third direction (Z-axis direction). The bag body 2 may have a closed region 23 extending from between the bag body first opening 21 and the bag body second opening 22 to the other side 12.

[0039] When the bag 2 has the closed region 23, the bag 2 may have a flow path region 24 formed by the bag first opening 21, the bag second opening 22, and the closed region 23. The heat exchange liquid flowing in from the bag first opening 21 may circulate through the flow path region 24 and then flow out from the bag second opening 22. By configuring the flow path region 24 to be a structure in which the heat exchange liquid circulates, it is possible to reduce temperature bias in the bag 2 and perform heat exchange efficiently, which is preferable.

[0040] One side 11 of the bag body 2 may be joined so as to cover the frame opening A71 and the frame opening B72, and the shape of the joint of the bag body 2 is not particularly limited. As shown in FIG. 3, the bag body 2 may be bent and spread between one side 11 and the other side 12 of the bag body 2, and a portion of the bag body 2 other than the one side 11 may also be joined to the frame 1. This is preferable because it is possible to increase the joint area between the frame 1 and the bag body 2 and improve the joint strength. Although not shown, the bag body 2 may be joined in other joint shapes as long as it is joined so as to cover the frame opening A71 and the frame opening B72. For example, only one side 11 of the bag body 2 may be joined so as to cover the frame opening A71 and the frame opening B72.

[0041] In the example of the bag 2 shown in Fig. 8, the closed area 23 is located at the middle of the length of one side 11 in the Y direction, and the bag 2 is symmetrical with respect to the center line of the closed area 23. Therefore, when using the bag 2, it is not necessary to consider the positional relationship in the Y direction between the bag first opening 21 and the bag second opening 22. Note that the closed area 23 can be shifted to one side or the other from the middle point of the one side 11.

[0042] 11 shows an example of the configuration of the bag body 2. The bag body 2 may include a film 82 having a metal foil or a metal layer, and a heat-sealed resin layer 81. When the bag body 2 includes a film 82 having a metal foil or a metal layer, and a heat-sealed resin layer 81, the bag body may be formed using the heat-sealed resin layer. When the bag body is formed using the heat-sealed resin layer 81, the heat-sealed resin layer can be heat-sealed to process into a bag shape, the bag body 2 can be created using a general-purpose technique, and the bag body 2 can be manufactured in a simple process and in a short time, which is preferable.

[0043] When the bag body 2 is a laminate including a film 82 having a metal foil or a metal layer, and a heat-sealable resin layer 81, the bag body 2 may be composed of a first film 83 and a second film 84. The heat-sealable layer 81 of the first film 83 and the heat-sealable layer 81 of the second film 84 may be arranged overlappingly so as to face each other. When the heat-sealable layer 81 of the first film 83 and the heat-sealable layer 81 of the second film 84 are arranged overlappingly so as to face each other, the first film 83 and the second film 84 can be easily joined by heat fusion, which is preferable.

[0044] Fig. 11 is a diagram showing an example of the joining relationship between the bag body and the frame, taking one opening in Fig. 8 as an example. When the bag body 2 includes a film 82 having a metal foil or metal layer, and a heat-sealing resin layer 81, and the heat-sealing layer 81 of a first film 83 and the heat-sealing layer 81 of a second film 84 are arranged in layers facing each other, the bag body 2 may be heat-sealed to the frame 1 using the heat-sealing resin layer 81 of the bag body. This is preferable because the bag body 2 can be firmly joined to the frame 1, and the joining can be achieved in a simple process and in a short time.

[0045] When the bag body 2 includes a metal foil or a metal layer 82, the thickness is preferably 7 μm or more, and particularly preferably 30 μm or more. When the thickness of the metal foil or metal layer 82 is 7 μm or more, the heat exchange efficiency and handling are good. When the thickness is less than 7 μm, the heat exchange efficiency is low, and the thickness is too thin and soft, making handling difficult. The thickness is preferably 60 μm or less, and particularly preferably 50 μm or less. When the thickness is more than 60 μm, it is difficult to bend and process into a bag shape. When the bag body 2 includes a metal foil or a metal layer 82, the material is not particularly limited as long as the desired performance can be obtained. Examples include aluminum, copper, stainless steel, and titanium. Aluminum may be used for the metal foil or metal layer 82. By using aluminum, it is preferable to obtain high heat exchange efficiency while being lightweight and inexpensive.

[0046] When the bag body 2 includes the heat-sealed resin layer 81, the material is not particularly limited as long as the desired performance can be obtained. Examples include polyethylene and polypropylene. The heat-sealed resin layer 81 may be one layer or multiple layers. When it is made of multiple layers, the heat-sealed resin layer 81 may be formed by multi-layer extrusion molding, or the layers may be bonded together with an adhesive.

[0047] The heat-sealing resin layer 81 is preferably made of polypropylene. By making the heat-sealing resin layer 81 of polypropylene, adhesive strength in a high-temperature environment can be obtained, which is preferable. The heat-sealing resin layer 81 further preferably contains block polypropylene. Block polypropylene has an effect of suppressing the heat exchange liquid from penetrating into other layers in the laminate film, which is preferable.

[0048] It is particularly preferable that the thermally adhesive resin layer 81 has a three-layer structure in which a block polypropylene layer is sandwiched between random polypropylene layers. The block polypropylene has a property of suppressing the heat exchange liquid from penetrating into other layers in contact with it, and the random polypropylene layer has a property of firmly adhering to other layers. By combining these three layers, it is possible to create a heat exchange device suitable for use in high temperature environments or for long-term use.

[0049] When the heat-sealable resin layer 81 is provided on one side of the metal foil or metal layer 82, the bag body 2 may have a layer made of another resin on the other side of the metal foil or metal layer 82. Examples of materials for the layer made of another resin include polyester, nylon, and polyethylene terephthalate. By providing these other resin layers, various physical properties and functions can be imparted to the bag body 2, which is preferable. For example, physical strength can be imparted to the metal foil or metal layer 82, and the metal foil or metal layer 82 can be protected from corrosion, which is preferable.

[0050] The bag body 2 may have layers other than the metal foil or metal layer 82, the heat-sealable resin layer 81, and the layer made of another resin. For example, an adhesive layer that bonds the layers together, a primer layer that improves the adhesion between the layers, a hard coat layer that improves hardness, etc. may be mentioned.

[0051] It is preferable that the bag body 2 has a thin plate shape when there is no heat exchange liquid. If the bag body 2 can have a thin plate shape, the volume of the heat exchange device can be reduced when not in use, which is preferable since it makes it easier to transport and store the heat exchange device. Furthermore, since the bag body 2 has a thin plate shape, the thin plate bag body 2 can be inserted between the heat exchange target members when assembling the heat exchange target members and the heat exchange device. Even if the gap between the heat exchange target members is narrow, the work of inserting the bag body 2 is easy, which is preferable.

[0052] It is preferable that the bag body 2 can expand when it contains a heat exchange liquid. If the bag body 2 can expand to match the shape of the heat exchange target member around the bag body 2, the bag body 2 can be in close contact with the heat exchange target member and heat exchange can be performed efficiently, which is preferable. For example, after the heat exchange device is assembled with the heat exchange target member to form a structure, when the heat exchange liquid is flowed into the heat exchange device, the bag body 2 can expand and the bag body 2 can follow the shape of the heat exchange target member and heat exchange can be performed efficiently, which is preferable.

[0053] The heat exchange target member is not particularly limited. The heat exchange target member may be a secondary battery. The heat exchange target member may be a lithium ion battery. It is generally known that repeated charging and discharging of a lithium ion battery generates gas inside the battery cell, causing the battery cell to gradually expand and deform. Even after the battery cell expands and deforms, the bag body 2 can continue to contact the battery cell over a wide area by expanding and deforming to follow the battery cell, which is preferable because it allows efficient heat exchange.

[0054] <Sealing member 3> The sealing member 3 is attached to the frame 1 .

[0055] The shape of the sealing member 3 is not particularly limited, but a sheet-like or film-like member may be used. By using a sheet-like member, the weight of the heat exchange device can be minimized, which is preferable.

[0056] The thickness of the sealing member in the third direction is not particularly limited, but is preferably 10 μm or more in the third direction. If the sealing member 3 has a thickness of 10 μm or more in the third direction, the physical strength can be ensured and the handling properties are good. The sealing member 3 preferably has a thickness of 100 μm or less in the third direction. If the thickness is 100 μm or less, the size of the heat exchange device can be minimized, which is preferable.

[0057] The sealing member 3 may have a heat-sealed resin layer on one surface. The sealing member 3 may be heat-sealed to the frame 1 using the heat-sealed resin layer. When the sealing member 3 is heat-sealed to the frame 1 using the heat-sealed resin layer, it is preferable because it can be firmly attached and the sealing member 3 can be manufactured in a simple process and in a short time. The components of the heat-sealed resin layer are not particularly limited. For example, polyethylene, polypropylene, etc. can be mentioned. In addition, the heat-sealed resin layer may be one layer or multiple layers. When it is composed of multiple layers, the heat-sealed resin layer may be formed by multilayer extrusion molding, or each layer may be bonded to each other with an adhesive.

[0058] As shown in FIG. 10, the heat exchange liquid flows between the inlet 4 and the outlet 5 by entering the frame 1 through the inlet 4, passing through each through hole A73 branching off from the first flow path 63, passing through each frame opening A71, flowing to the bag first opening 22 of each bag 2, flowing from the bag second opening 23 of each bag 2, passing through each frame opening B72, passing through each through hole B74 to the second flow path 64, and flowing out from the outlet.

[0059] As described above, according to the heat exchanger of the first embodiment, the heat exchanger can be manufactured using only three members, namely, the frame 1, the bag body 2, and the sealing member 3, and is therefore easy to process.

[0060] The heat exchange device 100 is formed by joining multiple bag bodies 2 to a frame 1, and when assembling the heat exchange target parts and the heat exchange device to form a structure, assembly can be completed in a simple process by simply inserting the heat exchange device of the present invention between the heat exchange target parts, resulting in excellent production efficiency.

[0061] Since there are a plurality of bags 2, the heat exchange target member can be sandwiched or surrounded by the bags 2, thereby improving the heat exchange efficiency.

[0062] The frame 1 has a first flow path and a second flow path, and can distribute and flow heat exchange liquid among multiple bags 2, thereby reducing the temperature difference between each bag 2 and enabling efficient heat exchange.

[0063] <Modification of the first embodiment> The first embodiment can also be modified as follows. The same parts as the first embodiment are omitted in the description. Fig. 12 is a view of the frame 1 of a modified example of the first embodiment as seen from the second main surface 7 side. Fig. 13 is a diagram showing the flow path of the heat exchange liquid in a modified example of the first embodiment, in which the bag body 2 is omitted and only the flow inside the bag body 2 is shown.

[0064] In Fig. 13, a thick solid line 91 indicates the flow of heat exchange liquid in the frame 1. A white line 92 indicates the flow of heat exchange liquid in the bag body 2. In Fig. 12 and Fig. 13, the frame opening A71 and the frame opening B72 are shown by hatching, but this does not represent a cross section, but rather shows the area of ​​each opening to make it easier to understand the arrangement of the openings.

[0065] 1, 12, and 13, the frame 1 has a first direction (X direction), a second direction (Y direction) perpendicular to the first direction, and a third direction (Z direction) perpendicular to the first and second directions, and can be used standing with one end side facing upward and the other end side facing downward in the second direction. By positioning one end side facing upward and the other end side facing downward, the bag body 2 can be inserted from the side surface of each heat exchange target member.

[0066] By inserting the bag body 2 from the side of the heat exchange target member, the bag body 2 can easily conform to the heat exchange target member even if the side shape is not flat, such as a cylindrical shape, and heat exchange can be performed efficiently, which is preferable. Also, by inserting the bag body 2 from the side of the heat exchange target member, it is easy to come into contact with the heat exchange target member over a wide area, even for a heat exchange target that is elongated in the vertical direction and has a small bottom area, and heat exchange can be performed efficiently, which is preferable.

[0067] 1, 12, and 13, when the frame 1 is used standing with one end side in the second direction facing upward and the other end side facing downward, the position of the outlet 5 may be higher than the position of the inlet 4 when the frame 1 is stood upright. By making the position of the outlet 5 higher than the position of the inlet 4, air bubbles mixed in the heat exchange liquid can be easily moved toward the outlet 5 side, and retention of the bubbles in the frame 1 can be suppressed, which is preferable.

[0068] 1, 12 and 13, when the frame 1 is used standing with one end side in the second direction facing upward and the other end side facing downward, the first flow path 63 can be positioned above the frame opening A71. By positioning the first flow path 63 above the frame opening A71, air bubbles mixed in the heat exchange liquid can be easily moved from the frame opening A71 to the first flow path 63 side, and can be prevented from remaining in the frame opening A71. This is preferable because it can improve the heat exchange efficiency.

[0069] 12 and 13, when the frame 1 is used standing with one end side in the second direction facing upward and the other end side facing downward, the second flow path 64 can be positioned above the frame opening B72. By positioning the second flow path 64 above the frame opening B72, air bubbles mixed in the heat exchange liquid can be easily moved toward the second flow path 64 side, and can be prevented from remaining in the frame opening B72. This is preferable because it can improve the heat exchange efficiency.

[0070] 13, the heat exchange liquid enters the frame 1 from the inlet 4, passes through each through hole A73 branched off from the first flow path 63, passes through each frame opening A71, and flows into the bag first opening 21 of each bag 2. Then, the heat exchange liquid flows from the bag second opening 22 of each bag 2, passes through each frame opening B72, passes through each through hole B74, flows into the second flow path 64, and flows out from the outlet 5, thereby flowing between the inlet 4 and the outlet 5.

[0071] According to the heat exchanger of the modified first embodiment described above, the heat exchanger can be manufactured using only three members: the frame 1, the bag body 2, and the sealing member 3.

[0072] The heat exchange device is integrated by joining multiple bag bodies 2 to a frame 1, and when assembling the heat exchange target parts and the heat exchange device, assembly can be completed in a simple process by simply inserting the heat exchange device of the present invention between the heat exchange target parts, resulting in excellent production efficiency. Since there are a plurality of bags 2, the heat exchange target member can be sandwiched or surrounded by the bags 2, thereby improving the heat exchange efficiency.

[0073] The temperature difference between the bags 2 can be reduced, and heat exchange can be performed efficiently.

[0074] When frame 1 is positioned so that one end side in the second direction is facing upward and the other end side is facing downward, it is possible to prevent air bubbles and the like that have become mixed in the heat exchange liquid from remaining in frame opening A71 and frame opening B72 or in frame 1, thereby improving heat exchange efficiency.

[0075] <Second embodiment> A second embodiment will now be described.

[0076] Fig. 14 is a view of the frame 1 in the second embodiment as viewed from the second main surface 7. Fig. 15 is a view showing the flow path of the heat exchange liquid in the second embodiment, in which the bag body 2 is omitted and only the flow inside the bag body 2 is shown. Note that the same parts as in the first embodiment are omitted.

[0077] In Fig. 15, a thick solid line 91 indicates the flow of heat exchange liquid in the frame 1. A white line 92 indicates the flow of heat exchange liquid in the bag body 2. In Fig. 14 and Fig. 15, the frame opening A71 and the frame opening B72 are shown by hatching, but this does not represent a cross section, but rather shows the area of ​​each opening to make it easier to understand the arrangement of the openings.

[0078] 14, there are a plurality of frame openings A71 and B72 paired in series in the first direction on the second main surface 7. There is a through hole A73 leading from the first flow path 63 to the first pair of frame openings A71 closest to the inlet 4, and there is a through hole B74 leading from the pair of frame openings B72 closest to the outlet 5 to the outlet 5.

[0079] 14, the first groove portion 61 and the second groove portion 62 are intermittently connected to each other. A sealing member 3 is attached to the first main surface 6, and a first flow path 63 is formed in which the first groove portion 61 and the sealing member 3 are intermittently connected to each other, and a second flow path 64 is formed in which the second groove portion 62 and the sealing member 3 are intermittently connected to each other.

[0080] 15, the frame 1 has a first flow path 63 that connects an even-numbered opening A71, counting in the first direction from the opening A closest to the inlet, to an opening A71 adjacent to the even-numbered opening A71 in the second direction via a through hole A73. The frame 1 has a second flow path 64 that connects an odd-numbered opening B72, counting in the first direction from the opening B72 closest to the inlet, to an opening B72 adjacent to the odd-numbered opening B72 in the second direction via a through hole B74.

[0081] The frame 1 has a first flow path 63 and a second flow path 64 that are intermittently connected, so that the heat exchange liquid entering from the inlet 4 flows from the first flow path 63 through the through hole A73, through the first pair of frame openings A71 closest to the inlet, to the first bag first opening 21 closest to the inlet, and then from the bag second opening 22 through the first pair of frame openings B72, through the through hole A73, and into the second flow path 64.

[0082] Next, the frame 1 has a flow path from the second flow path 64 through the frame opening B72 that is second closest to the inlet 5 to the second bag second opening 22, and from the bag first opening 21 of the second bag through the second pair of frame openings A71 and into the first flow path 63.

[0083] The flow is repeated in the same manner, and the frame 1 has a flow path that flows out of the outlet 5 via the pair of frame openings A71 or B72 that is closest to the outlet 5. This allows the heat exchange liquid flowing between the inlet and the outlet to have a flow path that flows continuously without branching. The shapes of the through holes A73 and B74 are not particularly limited as long as they can exhibit the desired functions.

[0084] The shapes of the through holes A73 and the through holes B74 may all be the same, or some may be different. As shown in Fig. 14, only the through hole A73 closest to the inlet 4 may have a different shape from the other through holes A73. Only the through hole B74 closest to the outlet 5 may have a different shape from the other through holes B74.

[0085] As shown in FIG. 1 and FIG. 15, the frame 1 can be used standing up so that one end side in the second direction (Y direction) is upward and the other end side is downward. When the frame 1 is used standing up, the outlet 5 may be located at a higher position in the horizontal direction than the inlet 4, and the number of the paired frame openings A71 and B72 may be an odd number. When the outlet 5 is located above the inlet 4 and the number of the paired frame openings A71 and B72 is an odd number, the frame opening B72 can be located above the paired frame opening A71. This makes it easier for bubbles mixed in the heat exchange liquid to move to the outlet 5, and can suppress retention in the frame. In addition, this is preferable because it can improve the heat exchange efficiency.

[0086] According to the heat exchanger of the second embodiment as described above, the heat exchanger can be manufactured using only three members: the frame 1, the bag body 2, and the sealing member 3.

[0087] In addition, the heat exchange device is integrated by joining multiple bag bodies 2 to a frame 1, and when assembling the heat exchange target materials and the heat exchange device, assembly can be completed in a simple process by simply inserting the heat exchange device of the present invention between the heat exchange target materials, resulting in excellent production efficiency.

[0088] Since there are a plurality of bags 2, the heat exchange target member can be sandwiched or surrounded by the bags 2, thereby improving the heat exchange efficiency. [Explanation of symbols]

[0089] 1: Frame 2: Bag body 3: Sealing member 4:Inlet 5: Outlet 6: First main surface 7: Second main surface 8: One end 9: The other end 11: One side of a rectangle 12: The other side of the rectangle 21: Bag first opening 22: Bag second opening 23: Closed area 24: Flow path area 25: Bag closure part 61: First groove 62: Second groove 63: First flow path 64: Second flow path 71: Frame opening A 72: Frame opening B 73:Through hole A 74;Through hole B 81: Heat-sealed resin layer 82: Metal foil or metal film 83: First Film 84: Second Film 91: Flow of heat exchange fluid within the frame 92: Flow of heat exchange fluid in the bag 100: Heat exchange equipment

Claims

1. A frame, a bag, and a sealing member are included. the frame has a flat plate shape having a first main surface including a first direction and a second direction perpendicular to the first direction, and a second main surface spaced apart in a third direction perpendicular to the first direction and the second direction, The first main surface has a first groove portion extending in the first direction and a second groove portion parallel to the first groove portion, the sealing member is attached to the first main surface, the first groove portion and the sealing member form a first flow path through which a heat exchange liquid flows, and the second groove portion and the sealing member form a second flow path through which the heat exchange liquid flows, an inlet leading from outside the frame to the first flow path at one end of the frame in the first direction, and an outlet leading from the second flow path to the outside of the frame at the other end of the frame in the first direction, a frame opening A and a frame opening B which are paired in series in the second direction on the second main surface, a through hole A which leads from the first flow path to the frame opening A, and a through hole B which leads from the second flow path to the frame opening B, the bag body has a substantially rectangular shape in a plan view, one side of the bag body is joined to a second main surface of the frame so as to cover the frame opening A and the frame opening B, the bag body has a bag body first opening at a portion of the bag body corresponding to the frame opening A, the bag body has a bag body second opening at a rectangular portion of the bag body corresponding to the frame opening B, and the bag body is closed except for the bag body first opening and the bag body second opening, A heat exchange device characterized in that the bag first opening and the frame opening A are connected to allow the heat exchange liquid to pass through, and the bag second opening and the frame opening B are connected to allow the heat exchange liquid to pass through.

2. the frame opening A and the frame opening B are paired in series in a plurality of directions, and the bag body is joined so as to cover the frame opening A and the frame opening B, respectively; 2. The heat exchange device according to claim 1, wherein the first flow path is closed at the other end side in the first direction, the second flow path is closed at one end side in the first direction, has a through hole A branching off from the first flow path to the frame opening A, and has a through hole B branching off from the second flow path to the frame opening B.

3. The frame opening A and the frame opening B are paired in series in a plurality of directions, The bag body includes a plurality of bag bodies, each bag body is joined so as to cover the frame opening A and the frame opening B, and the first flow path and the second flow path are each intermittently connected, 2. The heat exchange device according to claim 1, wherein the heat exchange liquid entering from the inlet flows from the first flow path through the through hole to the bag first opening of the first bag via the frame opening A of the first pair closest to the inlet, then flows from the bag second opening through the frame opening B of the first pair to the second flow path, then flows from the second flow path to the bag second opening of the second bag via the frame opening B second closest to the inlet, then flows from the bag first opening of the second bag via the frame opening A of the second pair to the first flow path, and repeats the same flow pattern to flow out of the outlet via the frame opening A or the frame opening B of the pair closest to the outlet.

4. The heat exchange device according to claim 1 , wherein the bag body includes a metal foil or a film having a metal layer, and a heat-sealable resin layer.

5. The bag body is made of a first film and a second film, and is arranged so that a heat-sealing layer of the first film and a heat-sealing layer of the second film face each other, the bag body has a closed region extending from between the bag body first opening and the bag body second opening in a direction toward the other side of the bag body, the closed region being an opposite side to one side of the substantially rectangular bag body, and has a flow path region formed by the closed region, the bag body first opening, and the bag body second opening; The heat exchange device according to claim 4 , wherein the heat exchange liquid is caused to flow from the bag first opening through the flow path region to the bag second opening.

6. The heat exchange device according to claim 4, wherein the bag body is bonded to the frame by heat fusion using the heat fusion resin layer.

7. The heat exchange device according to claim 1 , wherein the sealing member has a heat-sealing resin layer on one surface thereof, and the sealing member is heat-sealed to the frame by using the heat-sealing resin layer.

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