JP2021027020A - Heat exchange module and heat exchange device - Google Patents

Abstract

To provide a heat exchange module capable of handling a plurality of heat exchange target members.SOLUTION: The present invention is suitable for a heat exchange module including an outer package 10, at least part of which is constituted by a coating sheet made of a laminate material including a sealant layer 22 laminated on the inner surface side of a metal foil layer 21. On the outer package 10 are provided a forward path inlet 31 and a forward path outlet 32 arranged so as to correspond to the upstream side of a heat exchange flow passage 15. On the outer package 10 are provided a return path inlet 33 and a return path outlet 34 arranged so as to correspond to the downstream side of the heat exchange flow passage 15. A heat exchange medium L having flowed into the forward path inlet 31 is divided into a heat exchange medium L of a mainstream and a heat exchange medium L of a branch stream. The heat exchange medium L of the mainstream flows out from the forward path outlet 32. The heat exchange medium L of the branch stream passes through the heat exchange flow passage 15. A heat exchange medium P having passed through the heat exchange flow passage, then meets a heat exchange medium L having flowed in from the return path inlet 33, and the heat exchange medium P and the heat exchange medium L flow out from the return path outlet 34.SELECTED DRAWING: Figure 1

Description

The present invention relates to a heat exchange module and a heat exchange device manufactured by using a laminated material in which a resin layer is laminated on a metal foil layer.

Large-capacity, high-power devices such as power storage devices for photovoltaic power generation and wind power generation, storage batteries for electric vehicles and hybrid vehicles, and power modules that control the power supply of drive motor batteries generally handle large-capacity, high-output energy. It is composed of multiple devices. For example, a storage battery of an electric vehicle or a hybrid vehicle is composed of a plurality of devices such as a cell (battery cell). Each of these devices generates heat during use, and the heat load may reduce the performance or safety of each device. Therefore, it is preferable to cool all devices.

Therefore, Patent Document 1 below discloses a heat exchanger in which one heat exchanger is provided and all the devices are cooled by the one heat exchanger.

JP-A-2018-163741

However, when a plurality of devices are cooled by one unit as in the above-mentioned conventional heat exchanger, the devices may come into contact with each other, and it is difficult to uniformly cool all the devices (heat exchange target members). Therefore, there is a problem that sufficient cooling performance cannot be obtained.

It is also conceivable to install multiple independent heat exchangers for each device (heat exchange target member), but in that case, the number of pipes becomes large and the pipe structure becomes complicated, so that the installation space becomes large. There is a risk of Therefore, there is a problem that it is difficult to install a plurality of independent heat exchangers in a place where the installation space is limited, for example, in an equipment storage room such as an electric vehicle.

The present invention has been made in view of the above problems, and can be reliably installed even in a narrow installation space, and even when there are a plurality of heat exchange target members, each heat. An object of the present invention is to provide a heat exchange module and a heat exchange device capable of uniformly heat-exchanged members to be exchanged and improving heat exchange performance.

In order to solve the above problems, the present invention provides the following means.

[1] An exterior body having a heat exchange flow path is provided inside, and at least a part of the exterior body is composed of a coating sheet made of a laminate material in which a resin sealant layer is laminated on the inner surface side of the metal foil layer. A heat exchange module configured to exchange heat between a heat exchange medium flowing through a heat exchange flow path and a heat exchange target member arranged on the outer surface of the exterior body.
The exterior body is provided with an outward route entrance arranged corresponding to the upstream side of the heat exchange flow path and an outward route outlet arranged corresponding to the outward route entrance.
The exterior body is provided with a return inlet arranged corresponding to the downstream side of the heat exchange flow path and a return outlet arranged corresponding to the return inlet.
The heat exchange medium that has flowed into the exterior body from the outward path inlet is diverted, the mainstream heat exchange medium among the divergent heat exchange media flows out from the outward path outlet, and the sidestream heat exchange medium is the heat exchange flow path. A heat exchange module characterized in that the heat exchange medium is guided to the downstream side through the heat exchange medium, merges with the heat exchange medium flowing in from the return inlet, and flows out from the return outlet.

[2] The heat exchange module according to item 1 above, wherein one end of a joint pipe is attached to the outward path inlet, the outward path outlet, the return path inlet, and the return path outlet of the exterior body, respectively.

[3] The exterior body includes a flow path forming sheet and the covering sheets on both the front and back surfaces joined to the front and back surfaces of the flow path forming sheet.
The heat exchange module according to item 1 or 2 above, wherein the flow path forming sheet is provided with the hollow heat exchange flow path and has a function as a spacer in the thickness direction.

[4] The heat exchange module according to item 1 or 2 above, wherein the exterior body is formed by joining the sealant layers on the outer peripheral edge of the overlapped covering sheets.

[5] The heat exchange module according to any one of items 1 to 4 above, wherein the laminating material as the covering sheet includes a protective layer made of resin laminated on the outer surface side of the metal foil layer.

[6] A heat exchange device in which a plurality of heat exchange modules according to any one of items 1 to 5 above are arranged side by side.
A heat exchange apparatus characterized in that the outward outlet and the return inlet of one of the adjacent heat exchange modules are communicated with each other to the outward inlet and the return outlet of the other heat exchange module. ..

[7] The above item 6 wherein the heat exchange module is formed in a panel shape, the outward path inlet and the return path outlet are formed on the front surface side thereof, and the outward path outlet and the return path inlet are formed on the back surface side. Heat exchanger.

[8] The heat exchange modules are formed in a rectangular panel shape, and the heat exchange modules are arranged side by side in parallel at intervals.
The outward path inlet and the return path outlet are formed side by side in the horizontal direction on one end side in the vertical direction on the front surface side of the heat exchange module, and the outward path outlet is on the back surface side corresponding to the outward path inlet and the return path exit. The heat exchange device according to item 6 or 7 above, wherein the return inlet is formed.

[9] The heat exchange device according to any one of items 6 to 8 above, wherein heat exchange target members are arranged between the plurality of heat exchange modules.

According to the heat exchange module of the invention [1], a part of the heat exchange medium flowing in from the outward path inlet is circulated in the heat exchange flow path, and the rest is discharged from the outward path outlet, while the heat flowing through the heat exchange flow path Since the exchange medium is merged with the heat exchange medium flowing in from the return inlet and discharged from the return outlet, a plurality of exchange media can be arranged in parallel as needed, and there are a plurality of heat exchange target members. In addition, heat exchange can be performed evenly with each heat exchange target member, and the heat exchange performance can be improved because the contact area with the heat exchange target member becomes large. Further, since the heat exchange modules of the present invention can sequentially supply heat exchange media when a plurality of heat exchange modules are arranged side by side, the number of pipes can be reduced and the pipe structure can be reduced as compared with the case where a plurality of independent heat exchangers are installed. It can be simplified and can be installed reliably even in a limited installation space.

According to the heat exchange module of the invention [2], since joint pipes are attached to each inlet / outlet, when a plurality of joint pipes are installed in parallel, the pipes can be easily connected via the joint pipes.

According to the heat exchange module of the present invention [3], an exterior having a flow path can be easily obtained by simply adhering a coating sheet made of a laminate material to both the front and back surfaces of the flow path forming sheet in which the heat exchange flow path is formed. A body (heat exchange module) can be manufactured, and production efficiency can be improved. Further, since the exterior body is formed by laminating a flow path forming sheet and a covering sheet, it is possible to surely reduce the thickness and further reduce the size and compactness.

According to the heat exchange module of the invention [4], the exterior body can be easily manufactured only by joining the outer peripheral edges of the overlapped covering sheets, and the production efficiency can be improved. Further, since the exterior body is formed by superimposing covering sheets, it is possible to surely reduce the thickness and further reduce the size and compactness.

According to the heat exchange module of the invention [5], since the protective layer is provided on the outer surface side of the laminating material constituting the covering sheet, it is possible to prevent the metal foil layer from being directly exposed to the outside, for example, adverse effects due to dew condensation. Can be reliably prevented from reaching, and weather resistance can be improved.

According to the heat exchange apparatus of the inventions [6] to [9], since it is manufactured by using the heat exchange module of the above invention, the same effect as the above can be surely obtained.

FIG. 1 is a perspective view showing a heat exchange device according to a first embodiment of the present invention. FIG. 2 is a perspective view showing the heat exchange apparatus of the first embodiment in an exploded manner. FIG. 3 is a circuit diagram for explaining the flow of the heat exchange medium in the heat exchange device of the first embodiment. FIG. 4 is a perspective view showing a heat exchange panel as a heat exchange module applied to the heat exchange device of the first embodiment. FIG. 5 is a perspective view showing the heat exchange panel of the first embodiment in an exploded manner. FIG. 6 is a cross-sectional view taken along the line AA of FIG. FIG. 7 is a perspective view showing a state in which the joint pipe is attached in the heat exchange panel of the first embodiment. 8 (a) and 8 (b) are views showing a modified example of the flow path configuration applicable to the present invention, and are cross-sectional views corresponding to the cross-sectional views taken along the line AA of FIG. FIG. 9 is a perspective view showing a modified example of the covering sheet applicable to the present invention. FIG. 10 is a perspective view showing a part of the heat exchange device according to the second embodiment of the present invention in an exploded manner. FIG. 11 is a perspective view showing a heat exchange panel as a heat exchange module applied to the heat exchange device of the second embodiment. FIG. 12 is a perspective view showing the heat exchange panel of the second embodiment in an exploded manner. FIG. 13 is a perspective view showing the flow path forming sheet applied to the heat exchange panel of the second embodiment in an exploded manner. FIG. 14 is a perspective view showing a heat exchange device of an embodiment related to the present invention. FIG. 15 is a perspective view showing a heat exchange device as a reference example. FIG. 16 is a perspective view showing a simulated cell as a member to be cooled used in the evaluation test.

<First Embodiment>
1 and 2 are views showing a cooling device as a heat exchange device according to the first embodiment of the present invention. As shown in both figures, the heat exchange apparatus of the first embodiment includes a plurality of heat exchange panels P as heat exchange modules arranged in parallel, and heat exchange arranged between the heat exchange panels P. It is configured to be able to cool a cell (battery cell) B as a target member (cooling target member).

FIG. 4 is a perspective view showing the heat exchange panel P applied to the heat exchange device of the first embodiment, FIG. 5 is a perspective view showing the heat exchange panel P in an exploded manner, and FIG. 6 is a sectional view taken along line AA of FIG. It is a figure. In the present embodiment, in order to facilitate understanding of the invention, the depth direction of FIG. 4 is set to the "vertical direction", the left-right direction of FIG. 4 is set to the "horizontal direction", and the vertical direction of FIG. 4 is set to the "thickness direction". ". Further, in FIGS. 4 to 6, in order to facilitate understanding of the invention, the dimensions in the thickness direction are exaggerated as compared with the dimensions in the vertical and horizontal directions.

As shown in FIGS. 4 to 6, the heat exchange panel P of the present embodiment includes a flow path forming sheet 1 having a rectangular shape in a plan view and covering sheets 2 on both front and back surfaces laminated on the front and back surfaces of the flow path forming sheet 1. It has. In the present embodiment, the upper side of FIG. 1 will be the front side and the lower side will be the back side. However, in the present invention, the front side and the back side are not particularly distinguished, and either the front side or the back side may be used. For example, the upper side of FIGS. 4 and 5 may be the front side and the lower side may be the back side, or the lower side may be the front side and the upper side may be the back side.

The flow path forming sheet 1 is hollowed out in a U shape so as to penetrate the front and back surfaces by laser processing or the like, to form a hollow heat exchange flow path 15.

The flow path forming sheet 1 has a function as a spacer in the thickness direction, and can prevent contraction deformation, expansion deformation, etc. in the thickness direction of the heat exchange panel P to secure a predetermined thickness. ing.

The material of the flow path forming sheet 1 is not particularly limited, but it has the above-mentioned function as a spacer, can further form the heat exchange flow path 15, and can bond the covering sheet 2 by heat fusion or the like. Any material may be used as long as it is used.

As the material of the flow path forming sheet 1, for example, a synthetic resin sheet, a metal laminating material, a resin-coated metal material, or the like can be used. The metal laminating material is a material obtained by adhering and laminating a synthetic resin sheet or synthetic resin film on one side or both sides of a metal sheet or metal film. The resin-coated metal material is a metal laminate material, a metal sheet or a metal film coated with a synthetic resin on one or both sides. Specifically, as the synthetic resin sheet, a sheet made of polypropylene or polyethylene can be exemplified. Examples of the metal laminating material include those in which unstretched polypropylene (CPP) or linear low-density polyethylene (LLDPE) is attached to one or both sides of an aluminum sheet or aluminum film with an adhesive. Examples of the resin-coated metal material include those in which one or both sides of an aluminum sheet or an aluminum film are coated with acid-modified polypropylene (acid-modified PP) or modified polyethylene (modified PE).

As the flow path forming sheet 1, one having a thickness of 0.1 mm to 5 mm, preferably one having a thickness of 0.1 mm to 2 mm can be preferably used.

Further, it is preferable that at least the front and back surfaces of the flow path forming sheet 1 are made of the same type (including the same) resin as the resin forming the inner surface of the covering sheet 2. That is, when it is made of the same type of resin, the coating sheet 2 can be easily and surely adhered to the front and back surfaces of the flow path forming sheet 1 by heat fusion.

The covering sheet 2 is made of a laminating material (laminated sheet). As shown in FIG. 6, in the present embodiment, the laminating material includes a metal foil layer 21 and a resin film or a sealant layer made of a resin sheet laminated on one surface (inner surface) of the metal foil layer 21 via an adhesive. A (heat-sealing layer) 22 and a protective layer 23 made of a resin film or a resin sheet laminated on the other surface (outer surface) of the metal foil layer 21 via an adhesive are provided. In the present embodiment, the term "foil" is used to include a film, a thin plate, and a sheet.

As the metal foil layer 21, aluminum foil, copper foil, nickel foil, stainless steel foil, and a clad material (clad foil) using these foils can be preferably used. In this embodiment, the terms "aluminum", "copper", and "nickel" are used to include their alloys.

The metal foil layer 21 is also called a heat transfer layer, and it is preferable to use a metal foil layer 21 having a thickness of 5 μm to 200 μm.

Further, in the present embodiment, by subjecting the metal foil layer 21 to a surface treatment such as a chemical conversion treatment, it is possible to prevent corrosion of the metal foil layer 21 and improve the adhesiveness with the resin, which makes it even more durable. The sex can be improved.

The chemical conversion treatment is performed as follows, for example. That is, the surface of the metal leaf that has been degreased is coated with an aqueous solution of any one of 1) to 3) below, and then dried to perform a chemical conversion treatment.

1) An aqueous solution of a mixture containing phosphoric acid, chromic acid, and at least one compound selected from the group consisting of a metal salt of fluoride and a non-metal salt of fluoride.

2) At least one resin selected from the group consisting of phosphoric acid, an acrylic resin, a chitosan derivative resin and a phenolic resin, and at least one compound selected from the group consisting of chromic acid and a chromium (III) salt. An aqueous solution of a mixture containing,.

3) At least one resin selected from the group consisting of phosphoric acid, acrylic resin, chitosan derivative resin and phenolic resin, and at least one compound selected from the group consisting of chromic acid and chromium (III) salt. An aqueous solution of a mixture containing at least one compound selected from the group consisting of a metal salt of fluoride and a non-metal salt of fluoride.

The chemical conversion coating, chromium add-on amount is preferably set to 0.1mg ^{/ m 2} ~50mg ^/ m 2 as a (per one surface), and still more preferably, to set particular to ^{2mg / m 2 ~20mg / m 2} .

As the sealant layer 22, a sheet or film of CPP, LLDPE, acid-modified PP, or a sheet or film of modified PE such as ionomer can be preferably used. It is preferable to use a sealant layer 22 having a thickness of 20 μm to 100 μm, more preferably 20 μm to 50 μm.

As described above, the sealant layer 22 preferably uses the same type of resin as the resin constituting the front and back surfaces of the flow path forming sheet 1 in consideration of heat fusion properties and the like.

As the protective layer 23, a sheet or film of stretched polyester (PET, PBT), stretched polyamide (ONy), or polyolefin (OPP, CPP, LLDPE) can be preferably used. A protective layer 23 having a thickness of 5 μm to 100 μm can be preferably used.

The protective layer 23 protects the metal foil layer 21 of the laminated material, and thus protects the heat exchange panel P. The presence of the protective layer 23 prevents the metal foil layer 21 from being directly exposed to the outside. For example, it is possible to avoid adverse effects due to dew condensation, improve the weather resistance of the heat exchange panel P, and obtain excellent durability.

In the covering sheet 2 of the present embodiment, the protective layer 23 does not necessarily have to be formed, and the protective layer 23 can be omitted. However, as described above, it is preferable to form the protective layer 23 in consideration of durability and the like.

Further, the covering sheet 2 of the present embodiment may include at least a metal foil layer 21 and a sealant layer 22, and in the present invention, the laminating material as the covering sheet 2 is only the two layers 21 and 22. It may be formed. Needless to say, the laminate material may be composed of three layers 21 to 23 as in the above embodiment, or may be composed of four or more layers.

Further, as an adhesive layer for adhering each layer of the metal foil layer 21, the sealant layer 22 and the protective layer 23 constituting the laminating material as the covering sheet 2, a urethane adhesive having a thickness of 1 μm to 5 μm and an epoxy adhesive are adhered. Agents, olefin adhesives and the like can be preferably used.

The sealant layer 22 on the inner surface side of each of the two covering sheets 2 having the above configuration is laminated on the front surface and the back surface of the flow path forming sheet 1, and the sealant layer 22 and the flow path are formed by heat fusion. The resin constituting the front and back surfaces of the sheet 1 is joined and integrated, and the heat exchange panel P is assembled as shown in FIG. In the heat exchange panel P, the heat exchange flow path 15 has a flat tube shape because the opening surfaces on both the front and back sides of the heat exchange flow path 15 in the flow path forming sheet 1 are closed by the covering sheets 2 on both the front and back sides. Is formed in.

As shown in FIG. 5, the portions corresponding to both ends of the heat exchange flow path 15 in the covering sheets 2 on both the front and back sides, in other words, penetrate both sides of one end in the vertical direction of the covering sheets 2 on both the front and back sides in the front and back directions. Four circular doorways 31 to 34 are formed. The four entrances 31 to 34 are divided into an outward entrance 31, an outward exit 32, a return entrance 33, and a return exit 34. Of these, the outward entrance 31 is provided on one end of the front side covering sheet 2, and the return exit 34 is provided. It is provided on the other side of the end portion of the front side covering sheet 2. Further, the outward route outlet 32 is provided on one side of the end portion of the back side covering sheet 2, and the return route entrance 33 is provided on the other side of the end portion of the back side covering sheet 2.

Further, in the present embodiment, as shown in FIGS. 1 and 7, joint pipes 4 are attached to the entrances and exits 31 to 34 of the heat exchange panel P, respectively.

The joint pipe 4 is made of a molded product of a hard synthetic resin. In the present embodiment, the joint pipe 4 includes a cylindrical pipe main body 41 and a flange portion 42 integrally formed so as to project outward from one end of the pipe main body 41.

As the material of the joint pipe 4, for example, a polyolefin resin such as polyethylene or polypropylene, a heat-sealing resin such as polyester resin or polyamide resin can be preferably used, and in particular, a resin constituting the protective layer 23 of the coating sheet 2 It is preferably composed of the same type of heat-sealed resin.

The flange portion 42 of the joint pipe 4 is heat-sealed to the outer peripheral edge of the entrance / exit of the protective layer 23 in the coating sheet 2 of the heat exchange panel P, so that the joint pipe 4 is assembled to the heat exchange panel P. In this state, the pipe holes of the pipe body 41 in the joint pipe 4 are communicated and connected to the heat exchange flow path 15 via the inlets and outlets 31 to 34.

When the joint pipe 4 is attached in the present invention, it is not always necessary to form the flange portion 42 on the joint pipe 4, and the joint pipe may be formed only by the pipe body (pipe member). In this case, one end surface of the pipe member may be heat-sealed and attached to the attachment position of the covering sheet 2 or the like.

As will be described in detail later, in the heat exchange panel P having this configuration, the cooling liquid (cooling water, antifreeze liquid, etc.) L as the heat exchange medium (coolant) flows from the outbound inlet 31 via the joint pipe 4. When it flows into one end (upstream side end) of 15, the cooling liquid L is diverted, and among the separated cooling liquids L, the mainstream cooling liquid L is discharged from the outbound outlet 32 and the sidestream cooling liquid L. Is guided from the end portion (upstream side end portion) of the heat exchange flow path 15 to the downstream side end portion through the heat exchange flow path 15. Further, the coolant L that has flowed into the other end (downstream end) of the heat exchange flow path 15 from the return inlet 33 via the joint pipe 4 merges with the sidestream coolant L that has passed through the heat exchange flow path 15. Then, it flows out from the return exit 34 through the joint pipe 4.

In the present embodiment, the main stream and the side stream are not particularly distinguished by the flow rate, the flow velocity, etc., and one of the separated coolants L is simply referred to as the main stream coolant L. The other coolant L is referred to as a sidestream coolant L.

The heat exchange device (cooling device) of the present embodiment is assembled by using a plurality of heat exchange panels P having the above configuration. That is, as shown in FIGS. 1 and 2, the heat exchange panel P and the cell (battery cell) B as the cooling target member are arranged so as to be alternately overlapped along the thickness direction and adjacent to each other. The joint pipes 4 of the entrances and exits 31 to 34 corresponding to each other between the heat exchange panels P are connected to each other.

Specifically, assuming that each heat exchange panel P is arranged with the front side of FIGS. 1 and 2 as the front side and the depth side (back side) as the back side, the front side of the adjacent heat exchange panels P The outbound outlet 32 of the heat exchange panel P on the side is communicated with the outbound inlet 31 of the heat exchange panel P on the back side via a joint pipe 4, and the return inlet 33 of the heat exchange panel P on the front side is connected to the back. It is communicatively connected to the return outlet 34 of the heat exchange panel P on the side via a joint pipe 4.

Further, the joint pipes 4 of the outward outlet 32 and the return inlet 33 of the heat exchange panel P arranged at the innermost part (rearmost) are communicated with each other by a U-shaped turn pipe 5. The turn pipe 5 is made of the same material as the joint pipe 4. The outward outlet 32 and the return inlet 33 of the rearmost heat exchange panel P do not necessarily have to be connected by a turn pipe 5 or the like, and the outward outlet 32 and the return inlet 33 should be closed by a cap or the like. You can do it.

Further, in the present embodiment, the means for connecting the corresponding joint pipes 4 to each other and the means for connecting the joint pipe 4 and the turn pipe 5 are not particularly limited, and any connecting means may be adopted. For example, the facing end faces of the pipes may be directly connected by heat fusion or the like, or the corresponding pipes may be heat-fused through a pipe joint such as an insertion pipe (inner pipe) or an outer fitting pipe (outer pipe). It may be connected by wearing or the like.

Further, if the connecting ends of the joint pipe 4 and the turn pipe 5 are formed in a configuration (coupler structure) in which the tips of the joint pipes 4 can be mechanically attached to and detached from each other, the joint pipes 4 can be connected to each other and the joint pipes 4 can be connected to each other. And the turn pipe 5 can be easily connected only by hand.

In the present embodiment, it is also possible to connect the corresponding entrances and exits with one joint pipe. For example, among adjacent heat exchange panels P, one end (front end) of the joint pipe is connected to the outbound outlet 32 of the heat exchange panel P on the front side by heat welding or the like, and the other end (rear end) of the joint pipe is connected. By connecting to the outbound inlet 31 of the heat exchange panel P on the back side by heat fusion or the like, the corresponding inlets and outlets 31 and 32 can be communicated and connected by one joint pipe.

Further, in the present embodiment, almost the entire front and back surfaces of the battery cells B arranged between the heat exchange panels P are arranged in contact with the covering sheet 2 of the corresponding heat exchange panel P.

Then, an inflow pipe for inflowing the coolant L is connected to the joint pipe 4 of the outbound inlet 31 of the heat exchange panel P arranged in the foreground (front row), and the return outlet of the heat exchange panel P is connected. An outflow pipe for outflowing the coolant L is connected to the joint pipe 4 of 34.

In the heat exchange device in this state, as shown in FIG. 3, the coolant L is supplied from the outbound inlet 31 of the heat exchange panel P in the front row to the upstream end of the heat exchange flow path 15 via the inflow pipe and the joint pipe 4. When introduced, the introduced coolant L is diverted, and of the diverted coolant L, the mainstream coolant L flows out from the outbound outlet 32 of the heat exchange panel P in the front row, and is the second heat exchange panel. It flows into P from the outbound entrance 31. Further, the sidestream coolant L flows through the heat exchange flow path 15 of the heat exchange panel P in the front row and is guided to the vicinity of the return outlet 34 at the downstream end.

The coolant (mainstream coolant) L introduced into the heat exchange flow path 15 from the outbound inlet 31 of the second heat exchange panel P is split in the same manner as above, and the mainstream coolant L is the second. While flowing out from the outbound outlet 32 of the heat exchange panel P and flowing in from the outbound inlet 31 of the next heat exchange panel P, the sidestream coolant L flows through the heat exchange flow path 15 of the second heat exchange panel P. And is guided to the downstream end.

Of the coolant L flowing in from the outward path inlet 31 of each heat exchange panel P, a part of the coolant (mainstream coolant) L flows out of the outward path outlet 32 and flows into the next heat exchange panel P. The coolant L is sequentially supplied from the outbound inlet 31 of each heat exchange panel P, while the remaining coolant (sidestream coolant) L is downstream through the heat exchange flow path 15 of each heat exchange panel P. Guided to the side edge.

Then, the coolant L flowing in from the outbound inlet 31 of the heat exchange panel P in the last row is split in the same manner as described above, and the mainstream coolant L flows out from the outbound outlet 32 and passes through the turn pipe 5 to the return inlet 33. The sidestream coolant L is guided to the downstream end through the heat exchange flow path 15, merges with the coolant L flowing in from the return inlet 33, and then flows out from the return outlet 34. , It flows in from the return entrance 33 of the second heat exchange panel P afterwards. The coolant L flowing in from the return inlet 33 of the second heat exchange panel P from the back merges with the coolant L guided to the downstream side through the heat exchange flow path 15 of the heat exchange panel P, and merges therewith. The cooling liquid L flows out from the return outlet 34, and flows in from the return inlet 33 of the heat exchange panel P one before (third from the rear). The coolant L flowing in from the return inlet 33 of each heat exchange panel P merges with the coolant L flowing through the corresponding heat exchange flow path 15 and flows out from the return outlet 34 (one before). ) It flows in from the return entrance 33 of the heat exchange panel P.

Then, the coolant L flowing in from the return inlet 33 of the heat exchange panel P in the front row merges with the coolant L passing through the heat exchange flow path 15 of the heat exchange panel P, and flows out from the return outlet 34 to the joint pipe 4. It is discharged through a pipe.

The coolant L sequentially supplied to each heat exchange panel P circulates in each heat exchange flow path 15, while the coolant L circulating in each heat exchange flow path 15 and the corresponding battery cell B exchange heat. By doing so, each battery cell B is cooled.

As described above, in the heat exchange device of the present embodiment, a plurality of heat exchange panels P are arranged side by side in parallel at predetermined intervals, and a battery cell as a heat exchange target member is provided between the heat exchange panels P. Each B is arranged and each heat exchange panel P is configured to cool the corresponding battery cell B. Therefore, all the battery cells B can be reliably cooled, and problems such as insufficient cooling of any of the battery cells B can be reliably prevented, and good cooling performance (heat exchange performance) can be obtained. Can be done.

Further, in the heat exchange device of the present embodiment, since the coolant L is sequentially divided and supplied to each heat exchange panel P, the flow amount of the coolant L varies for each heat exchange panel P. It can be distributed evenly. Therefore, each heat exchange panel P can evenly and surely cool the corresponding battery B, and the cooling performance can be further improved.

Further, since the heat exchange device of the present embodiment sequentially supplies the cooling liquid L to each heat exchange panel P while dividing the cooling liquid L, it is only necessary to install one circulation pump or the like for circulating the cooling liquid L. Well, for example, it is not necessary to install multiple circulation pumps for each heat exchange panel P, and the number of pipes can be further reduced, the pipe structure can be simplified, the number of parts can be reduced, and the structure can be simplified. , The entire device can be made compact and compact. Therefore, the heat exchange device of the present embodiment can be reliably incorporated even in a limited narrow space such as an equipment storage rule (engine room) of an electric vehicle or the like.

Further, since the size of the heat exchange device of the present embodiment can be easily changed by simply changing the number of heat exchange panels P used, it can be set to a size suitable for the size and shape of the space inside the vehicle. It can be reliably incorporated in the reserved space.

Further, in the heat exchange device of the present embodiment, since the battery cells B are arranged between each of the plurality of heat exchange panels P arranged in parallel to cool the battery cells B, the individual battery cells are cooled. B can be reliably partitioned by the heat exchange panel P. Therefore, it is possible to reliably prevent the battery cells from coming into contact with each other and causing problems such as cooling failure at the contact portion, and it is possible to further improve the cooling performance (heat exchange performance).

Further, since the heat exchange device of the present embodiment is formed by combining a plurality of heat exchange panels P having the same configuration, if a part of the parts is damaged, the heat exchange panel corresponding to the damaged part is formed. It can be easily repaired by simply replacing P with a new heat exchange panel P, repair work can be easily performed, and convenience can be improved.

Further, the heat exchange panel P applied to the heat exchange device of the present embodiment simply heat-seals the coating sheet 2 made of a laminate material to both the front and back surfaces of the flow path forming sheet 1 made of a resin sheet or the like. The exterior body 10 can be easily manufactured by the above method, and the production efficiency can be improved.

Further, in the present embodiment, since the flow path forming sheet 1 and the covering sheet 2 are heat-sealed and joined and integrated to form the exterior body 10, brazing joining and the like are difficult and troublesome. It is not necessary to use metal processing, it can be manufactured more easily, and the production efficiency can be further improved.

Further, if the sheet member for the flow path forming sheet 1 and the laminating material for the covering sheet 2 are processed by laser processing, a cutter, or the like, the flow path forming sheet 1 and the covering sheet 2 can be formed. Each component itself of the heat exchange panel P of the present embodiment can be easily manufactured, and the production efficiency can be further improved.

Further, since the components of the heat exchange panel P are thin, they do not get in the way even if they are arranged side by side with the plurality of battery cells B, and therefore, they can be arranged in the gaps of the plurality of battery cells B without any trouble. As a result, heat exchange between the coolant L passing through the heat exchange flow path 15 and the heat exchange target member such as the battery cell B can be performed simultaneously at a plurality of locations, and the cooling efficiency of the entire cell is improved. ..

Further, since the heat exchange panel P of the present embodiment is for assembling the exterior body 10 by laminating the covering sheet 2 on both sides of the flow path forming sheet 1, it is possible to surely reduce the thickness and weight. The entire heat exchanger can be made smaller and more reliable.

Further, the heat exchange panel P of the present embodiment can easily change the shape and size of components such as the flow path forming sheet 1 and the covering sheet 2, and the shape and size of the heat exchange panel P itself can be easily changed. Can be changed. Therefore, for example, the shape and size can be freely adjusted according to the installation position of the heat exchange panel P, etc., so that the degree of freedom in design can be increased and the versatility can be improved.

Further, in the heat exchange panel P of the present embodiment, since the flow path forming sheet 1 functions as a spacer in the thickness direction, compression and expansion deformation in the thickness direction, particularly compression deformation, can be effectively prevented and used. It can maintain a stable form from beginning to end regardless of the situation. Therefore, excellent flow characteristics can be reliably maintained in the coolant L flowing through the heat exchange flow path 15, and poor contact of the coating sheet 2 with respect to the heat exchange target member can be reliably prevented, further improving the heat exchange performance. Can be made to.

Further, in the present embodiment, since the heat exchange flow path 15 of the flow path forming sheet 1 is open on both the front and back surfaces, the cooling liquid L is directly contacted with the covering sheet 2 arranged on the open surface to cool the flow path. The heat can be exchanged more efficiently between the liquid L and the heat exchange target member, and the heat exchange performance can be further improved.

Further, in the present embodiment, since the resin forming the front and back surfaces of the flow path forming sheet 1 and the sealant layer 22 forming the inner surface of the covering sheet 2 are made of the same type of resin, they are coated with the flow path forming sheet 1. The sheet 2 can be attached with sufficient adhesive strength. Therefore, for example, sufficient strength against internal pressure can be sufficiently secured, partial peeling of the covering sheet 2 and liquid leakage due to the peeling can be reliably prevented, and durability can be improved while ensuring good operation reliability.

Further, in the present embodiment, since the resin constituting the joint pipe 4 and the protective layer 23 forming the outer surface of the covering sheet 2 are made of the same type of resin, the joint pipe 4 is sufficiently adhered to the covering sheet 2. It can be attached with strength, and it is possible to more reliably prevent poor adhesion of the joint pipe 4 and liquid leakage.

Further, according to the heat exchange panel P of the present embodiment, since the joint pipe 4 is attached, the connection between the entrances and exits 31 to 34 corresponding to each other in the adjacent heat exchange panels P can be easily and smoothly performed via the joint pipe 4. It can be carried out.

As shown in FIG. 3, in the above embodiment, the heat exchange flow path 15 of the heat exchange panel P is formed so as to penetrate the flow path forming sheet 1 in the thickness direction, but the present invention is not limited to this, and FIG. As shown in (a), in the present invention, the heat exchange flow path 15 may be formed so as to form a groove shape in which only one side of the front and back surfaces of the flow path forming sheet 1 is open. As shown in 8 (b), the heat exchange flow path 15 may be formed in a tunnel shape without being opened on the front and back surfaces of the flow path forming sheet 1.

Further, in the above embodiment, the case where two covering sheets 2 on the front surface side and the back surface side are used as the covering sheet 2 has been described as an example, but the present invention is not limited to this, and in the present invention, the covering sheets on both the front and back sides are used. It can also be composed of one sheet member. For example, as shown in FIG. 9, a sheet member in which a front side covering sheet portion (front side covering sheet 2) and a back side covering sheet portion (back side covering sheet 2) are continuously provided is prepared, and the sheet member is placed in the continuous portion. By folding back, the front side covering sheet portion is formed as the front side covering sheet 2, and the back side covering sheet portion is formed as the back side covering sheet 2. As a result, the covering sheets on both the front and back sides can be formed by one sheet member.

Further, in the above embodiment, the case where each of the front and back covering sheets 2 is composed of one sheet member is described as an example, but the present invention is not limited to this, and in the present invention, each of the front and back covering sheets 2 is described. May be formed by joining a plurality of sheet pieces to form a plurality of sheet pieces.

Further, in the above embodiment, the case where the flow path forming sheet 1 is formed by one sheet member is described as an example, but the present invention is not limited to this, and in the present invention, a plurality of flow path forming sheets 1 are provided. It may be composed of the sheet members of. For example, the flow path forming sheet 1 may be composed of a plurality of sheet pieces (sheet materials) spliced in the vertical direction and / or the horizontal direction, or as in the second embodiment described later, the flow path forming sheet 1 may be formed. May be composed of a plurality of sheet materials in which the above are stacked in the thickness direction.

Further, in the above embodiment, the case where the heat exchange flow path 15 is formed in a U shape in a surface view has been described as an example, but in the present invention, the shape of the heat exchange flow path 15 is not limited. Absent. For example, the heat exchange flow path 15 is formed in an I shape extending from one end to the other end in the vertical direction of the flow path forming sheet 1, meandering, wavy, zigzag, or spiral. You can do it.

Further, in the above embodiment, the case where the entrances and exits 31 to 34 of the heat exchange panel P are formed side by side in the horizontal direction on one end side in the vertical direction has been described as an example, but in the present invention, the positions of the entrances and exits 31 to 34 have been described. Is not particularly limited. For example, when the heat exchange flow path 15 is formed in an I shape extending from one end to the other end in the vertical direction, the outbound entrance 31 and the back surface are on the front surface side of one end (upper end, etc.) in the vertical direction of the heat exchange panel P. The outbound exit 32 may be formed on the side, the return inlet 33 may be formed on the back surface side of the other end (lower end, etc.) in the vertical direction, and the return exit 34 may be formed on the front surface side.

Further, in the heat exchange apparatus of the above embodiment, the case where a plurality of heat exchange panels P are used has been described as an example, but the present invention is not limited to this, and in the present invention, the heat exchange apparatus is provided with only one heat exchange panel P. It can also be applied to.

<Second Embodiment>
FIG. 10 is a perspective view showing a part of the heat exchange device according to the second embodiment of the present invention in an exploded manner, and FIG. 11 is a perspective view showing a heat exchange panel P as a heat exchange module applied to the heat exchange device. FIG. 12 is a perspective view showing the heat exchange panel P in an exploded manner, and FIG. 13 is a perspective view showing the flow path forming sheet 1 applied to the heat exchange panel P in an exploded manner.

As shown in these figures, in the heat exchange device of the second embodiment, a pair of entrance / exit protrusions 11 are formed so as to project vertically on one end side in the vertical direction of each heat exchange panel P. Doorways 31 to 34 are formed in the doorway protrusion 11.

That is, in the heat exchange panel P applied to the heat exchange device of the second embodiment, the flow path forming sheet 1 includes the intermediate sheet material 1c and the front side sheet material 1a laminated on the surface side of the intermediate sheet material 1c. , It is composed of three sheet materials, that is, the back side sheet material 1b laminated on the back surface side of the intermediate sheet material 1c.

Hollow U-shaped flow path portions 15a to 15c are formed in each of the sheet materials 1a to 1b corresponding to the U-shaped heat exchange flow path 15 similar to the above embodiment, and three sheets are formed. By overlapping the sheet materials 1a to 1c, the flow path portions 15a to 15c are also overlapped to form a hollow heat exchange flow path 15.

Each sheet material 1a to 1c is formed so that a portion corresponding to a flow path portion 15a to 15c at one end edge in the vertical direction projects outward in the vertical direction, and a pair of entrance / exit protruding pieces 11a to 11c are formed. Each is formed.

Of the sheet materials 1a to 1c, each of the entrance / exit protruding pieces 11c in the intermediate sheet material 1c is formed with an extension flow path portion 16c so as to extend in the vertical direction. One end of each extension flow path portion 16c is communicated with both ends of the flow path portion 15c, and the cooling water L is configured to be able to move between the flow path portion 15c and the extension flow path portion 16c.

Further, one of the entrance / exit protruding pieces 11c of the front side sheet 1a is formed with a circular outward entrance 31 corresponding to one extension flow path portion 16c of the intermediate sheet 1c, and the other entrance / exit protruding piece 11c is formed. , A circular return outlet 34 is formed corresponding to the other extension flow path portion 16c of the intermediate sheet 1c.

Further, one of the entrance / exit protruding pieces 11b of the back side sheet 1b is formed with a circular outward exit 32 corresponding to the outward entrance 31, and the other entrance / exit protruding piece 11b corresponds to the return exit 34. Therefore, a circular return entrance 33 is formed.

Then, in a state where the three sheet materials 1a to 1c are laminated, the sheets 1a to 1c are joined and integrated by heat fusion to form the flow path forming sheet 1.

In the present embodiment, as described above, one heat exchange flow path 15 is formed by the flow path portions 15a to 15c of the three sheet materials 1a to 1c. Further, the doorway protrusions 11 are formed by the doorway protrusions 11a to 11c in which the three sheet materials 1a to 1c are overlapped. Further, the outbound entrance 31 and the outbound exit 32 are communicatively connected to one end (upstream side end) of the heat exchange flow path 15 via one of the extension flow paths 16c, and the return inlet 33 and the return exit 34 are connected. On the other hand, it is communicatively connected to the other end (downstream end) of the heat exchange flow path 15 via the extension flow path 16c.

Here, in the present embodiment, as the material of each sheet material 1a to 1c, the same material as the flow path forming sheet 1 of the first embodiment can be preferably used. Further, it is preferable that each of the sheet materials 1a to 1c is made of the same material.

Similar to the above, the heat exchange panel P of the third embodiment is formed by heat-sealing the covering sheet 2 having no entrance / exit formed on both the front and back surfaces of the flow path forming sheet 1 having the above configuration. ..

Further, as shown in FIG. 10, in each heat exchange panel P, joint pipes 4 are attached to the outward path inlet 31, the outward path outlet 32, the return path inlet 33, and the return path outlet 34, respectively, in the same manner as described above.

A plurality of heat exchange panels P having this configuration are used, and the heat exchange device (cooling device) of the second embodiment is assembled. That is, as in the first embodiment, the heat exchange panels P and the battery cells B are arranged so as to be alternately overlapped along the thickness direction, and the entrances and exits corresponding to each other between the adjacent heat exchange panels P. The pipes 4 of 31 to 34 are communicated with each other.

Since the other configurations of the heat exchange device of the second embodiment are the same as those of the heat exchange device of the first embodiment, the same or corresponding parts are designated by the same reference numerals and duplicate description will be omitted.

In the heat exchange device of the second embodiment, as shown in FIG. 3, the coolant L circulates in the same manner as in the first embodiment. That is, the coolant L flowing in from the outbound inlet 31 of the heat exchange panel P in the front row is sequentially supplied to the next heat exchange panel P while being diverted, so that each heat exchange panel P has its own heat exchange flow path 15. While the coolant L is circulated, the coolant L flowing out from the rearmost heat exchange panel P return outlet 34 is supplied forward while merging with each heat exchange panel P, and the heat exchange panel P in the front row It is discharged from the return exit 34 of.

In this way, each battery cell B is cooled by heat exchange between the coolant L, which is sequentially supplied to each heat exchange panel P and circulates in each heat exchange flow path 15, and the corresponding battery cell B.

As described above, the heat exchange device of the second embodiment can obtain the same effect as the heat exchange device of the first embodiment.

Further, in the heat exchange device of the third embodiment, the entrance / exit protrusion 11 is formed on the flow path forming sheet 1 of the heat exchange panel P, and the entrance / exit 31 to 34 are formed on the entrance / exit protrusion 11. Therefore, the entrances and exits 31 to 34 can be easily arranged at a distance from the heat exchange target member. Therefore, regardless of the shape and size of the heat exchange target member, the joint pipe 4 and the like can be easily attached to the entrances and exits 31 to 34, and the versatility can be further improved.

In the above embodiment, the case where the heat exchanger (heat exchange panel) of the present invention is used as a cooler (cooling device) for a battery pack for automobiles or the like has been described as an example, but in the present invention, the battery It can be applied to a cooler other than the pack cooler, and can also be applied as a heater by circulating a heat exchange medium (heat medium) for heating in the heat exchange flow path. Specifically, of heat exchangers for heating automobile battery packs, electric power semiconductor elements (power modules) for controlling the main power of electric power drive devices such as automobile electric motors, industrial machines, home appliances, and information terminals. Heat exchangers for cooling, heat exchangers for cooling the CPU (central arithmetic processing device) of personal computers, heat exchangers for cooling / heating household or commercial storage batteries, battery packs (battery modules) for personal computers As a heat exchanger for cooling the display of LCD TVs, organic EL TVs, plasma TVs, floor heating equipment, and heat exchangers for snow melting equipment such as roofs, passages, and roads in cold regions. Can also be used.

Further, in the above embodiment, the case where the covering sheet 2 is laminated on both the front and back surfaces of the flow path forming sheet 1 to form the exterior body (casing) 10 has been described as an example, but the present invention is not limited to this. It suffices that at least a part of the exterior material is made of a laminated material as a covering sheet 2. For example, in the present invention, two laminated materials may be superposed on each other, and the outer peripheral edges of the two laminated materials may be integrated with each other by heat fusion or the like to form an exterior material. Further, in the present invention, one laminating material may be folded in half to form an exterior material by heat-sealing the outer peripheral edges of the overlapping laminating materials excluding the folded portion. good. Further, the exterior material may be formed by using three or more laminated materials.

Further, in the present invention, the laminate material may be thermoformed into a three-dimensional shape, and the molded product may be used to form the exterior body 10. For example, the exterior body may be formed by molding the laminate material into a tray shape and adhering the concave opening of the tray member with a sheet-like laminate material or the like.

<Example>
Based on the heat exchange device of the embodiment shown in FIGS. 1 to 3, the heat exchange device of the embodiment shown in FIG. 14 was manufactured as follows.

1. 1. Preparation of Coating Sheet (Laminated Material) 2 As a member for the sealant layer 22 and the protective layer 23, a CPP film having a thickness of 30 μm, one side of which was subjected to corona discharge treatment, was prepared. Further, a polyester polyurethane adhesive is applied to one surface (inner surface) of the aluminum foil (thickness 50 μm) of JIS H4160 A1N30-H18 as the metal foil layer 21 at ^{a coating amount of 3 g / m 2} , and the above-mentioned CCP film is applied. The surface of the corona discharge-treated side of the above was bonded, and the other surface (outer surface) of the metal foil layer 21 was similarly ^{coated with a polyester polyurethane adhesive at a coating amount of 3 g / m 2} to obtain the above-mentioned CCP film. After laminating the surfaces of the corona discharge-treated side, the laminated material of the example was prepared by curing at 40 ° C. for 3 days. In this laminated material, the sealant layer 22 on the inner surface side and the protective layer 23 on the outer surface side have substantially the same configuration.

This laminated material was cut into a length of 50 mm and a width of 120 mm to form a pair of circular holes (doorways) having a diameter of φ8 mm at one end in the vertical direction and arranged in the horizontal direction to prepare a covering sheet 2.

2. 2. Preparation of Channel Forming Sheet 1 A polypropylene sheet having a thickness of 800 μm (0.8 mm) is cut to the same size as the covering sheet 2 (length 50 mm × width 120 mm), and then U-shaped heat is used using a fiber laser machine. The exchange flow path 15 (see FIG. 4) was formed so as to penetrate between the front and back surfaces to prepare a flow path forming sheet 1.

A non-adhesive laminate was prepared by arranging the coating sheet 2 on the front surface side and the back surface side of the flow path forming sheet 1 so as to overlap the sealant layer 22 on the inner surface side thereof. At this time, the entrances and exits of both covering sheets 2 are arranged so as to correspond to both ends of the heat exchange flow path 15 of the flow path forming sheet 1, one entrance and exit of the covering sheet 2 on the front side is an outward entrance 31 and the other entrance and exit are. The return exit 34 was used, one entrance / exit of the covering sheet 2 on the back side was designated as the outbound exit 32, and the other entrance / exit was designated as the return entrance 33 (see FIGS. 3 and 5 and the like).

3. 3. Assembly of heat exchange panel P and installation of joint pipe 4 The unbonded laminate is sandwiched between two aluminum plates with a thickness of 5 mm, left in a constant temperature bath set at 150 ° C. for 10 minutes, and then a constant temperature bath. After confirming that it was cooled, it was taken out from between the aluminum plates. By this heat treatment, the sealant layer 22 of the front and back covering sheets 2 and the front and back surfaces of the flow path forming sheet 1 were heat-sealed.

Subsequently, one end side of a joint pipe 4 (without a flange portion) composed of polypropylene tubes having an inner diameter of φ8 mm, an outer diameter of φ11 mm, and a length of 10 mm is burned with a burner to confirm that it has melted, and then the melted side end portion thereof. Was pressed against the peripheral edges of each of the entrances and exits 3 of the covering sheets 2 on both the front and back sides and adhered (heat-sealed) to prepare a heat exchange panel P with a joint pipe.

4. Assembly of Heat Exchanger As shown in FIG. 16, a simulated body (simulated cell) B of a battery cell (cell) made of an aluminum block having a length of 10 mm, a width of 100 mm, and a thickness of 20 mm was prepared.

Then, as shown in FIG. 14, the four heat exchange panels P and the three simulated cells B are alternately arranged in the thickness direction, and the joints of the entrances and exits facing each other in the adjacent heat exchange panels P. The pipes 4 were connected to each other. Specifically, among the adjacent heat exchange panels P, the outbound outlet 32 and the return inlet 33 of the front heat exchange panel P are communicated with each other to the outward inlet 31 and the return outlet 34 of the rear heat exchange panel P, respectively. As described above, the corresponding joint pipes 4 were connected to each other.

Further, the outward outlet 32 and the return inlet 33 of the heat exchange panel P arranged at the rearmost end are connected by a turn pipe 5. As a result, the heat exchange device of the embodiment was assembled.

<Reference example>
1. 1. Preparation of Exterior Sheet (Laminated Material) As a member for the sealant layer, a CPP film having a thickness of 30 μm, one side of which was subjected to corona discharge treatment, was prepared. Further, a polyester polyurethane adhesive is applied to one surface (inner surface) of the aluminum foil (thickness 50 μm) of JIS H4160 A1N30-H18 as the metal foil layer 21 at ^{a coating amount of 3 g / m 2} , and the above-mentioned CCP film is applied. The surface of the metal leaf layer 21 treated with the corona discharge was bonded, and a PET film having a thickness of 12 μm was bonded to the other surface (outer surface) of the metal foil layer 21 in the same manner as a protective layer, and then 3 at 40 ° C. After curing for a day, a reference example laminate was prepared. This laminated material was cut into a length of 90 mm and a width of 140 mm to prepare an exterior body sheet.

2. 2. Manufacture of exterior body Using a deep drawing molding tool manufactured by Amada Co., Ltd., deep drawing is performed on the exterior body sheet, and as shown in FIG. 15, the central portion of the exterior body sheet is projected upward. As a result, a substantially square-shaped upward protruding recess 102 having a length of 70 mm, a width of 120 mm, and a height (depth) of 3 mm that is open downward, and a flange portion 103 that protrudes outward to the outer peripheral edge of the lower end of the upward protruding recess 102. A molded body 101 having an inverted tray shape (substantially a hat type) was produced. Further, a pair of entrances and exits 104 having an inner diameter of φ8 mm were formed at diagonal positions on the upper wall of the upward protruding recess 102 of the molded body 101 at a distance of 100 mm or more in the surface direction of the upper wall surface.

On the lower surface side of the molded body 101, a cover sheet 110 made of the unmolded exterior body sheet is arranged so as to close the lower end opening portion of the upward protruding recess 102, and the inner surface of the flange portion 103 of the molded body 101 ( By superimposing the inner surface (CPP film side) of the cover sheet 110 on the CPP film side), a non-adhered exterior body was prepared.

Heat sealing temperature: 200 ° C., sealing pressure: 0.2 MPa (gauge display pressure), sealing time: 2 seconds between the flange portion 103 of the molded body 101 and the outer peripheral edge portion of the cover sheet 110 in this unbonded exterior body. Heat sealing was performed under the conditions, and the flange portion 103 of the molded body 101 and the cover sheet 110 were heat-sealed to prepare the exterior body 100. Further, on the outer peripheral edge of the doorway 104 on the upper wall of the exterior body 100, one end side of the doorway pipe 105 composed of a polypropylene tube (length 10 mm) having an inner diameter of φ8 mm and an outer diameter of φ11 mm was burned with a burner and melted. After confirming, it was pressed and bonded (heat fusion) to prepare an exterior body (heat exchange device) with an inlet / outlet pipe.

<Evaluation test>
Before sandwiching each simulated cell B with respect to the heat exchange device of the embodiment (see FIG. 14), the simulated cell B is heated to 80 ° C. in a constant temperature bath, and the heated simulated cell B is placed between the heat exchange panels P. It was installed so that it would be sandwiched between. After installing the simulated cell B in this way, tap water (cooling liquid) having a water temperature of 21 ° C. is supplied from the outbound inlet 31 of the heat exchange panel P in the front row of the heat exchange device of the embodiment at a flow rate of 0.3 L / min to the joint pipe. By flowing in through 4, tap water is sequentially supplied to the heat exchange panel P in the same manner as in the embodiment of FIG. 3, and tap water is circulated in each heat exchange flow path 15, so that each simulated cell. B was cooled. Then, the temperature of the upper surface center portion C (the hatched portion of the shaded line in FIG. 16) of the simulated cell B was measured at predetermined elapsed time intervals. The results are shown in Table 1.

In the heat exchange device of the reference example (see FIG. 15), the three simulated cells B heated in the same manner as in the embodiment were arranged side by side on the upper surface of the upward protruding recess 102. In that state, tap water (cooling liquid) having a water temperature of 21 ° C. flows in from one inlet / outlet 104 through the inlet / outlet pipe 105 at a flow rate of 0.3 L / min, and the tap water is circulated to the exterior body 100 to flow to the other. Each simulated cell B was cooled by circulating tap water to the exterior body 100 by flowing out from the entrance / exit 104 of the above through the entrance / exit pipe 105. Then, the temperature of the upper surface center portion C (the hatched portion of the diagonal line in FIG. 15) of the simulated cell B was measured at predetermined elapsed times in the same manner as in the embodiment. The results are shown in Table 1.

As can be seen from Table 1, the simulated cell B cooled by the heat exchange device of the embodiment related to the present invention is efficiently cooled as compared with the simulated cell B cooled by the heat exchange device of the reference example. Therefore, the heat exchange device of the embodiment had good heat exchange performance.

That is, in the heat exchange device of the embodiment, since each simulated cell B can be cooled from both front and rear (front and back) sides, the entire area can be cooled in a well-balanced manner for each simulated cell B, and each simulated cell B is cooled evenly. It is possible to improve the cooling performance.

On the other hand, in the heat exchange device of the reference example, each simulated cell B can be cooled only from one side, a cooling failure portion is likely to occur in each simulated cell B, and the simulated cell B is cooled at the arrangement position. Difficult, for example, the central cell B may be less likely to be cooled than the cells B on both sides, and the cooling performance may be lower than that of the embodiment.

In particular, since the actual size of the battery cell B is often long in the vertical direction as shown in FIGS. 1 and 2, the contact area (heat transfer area) with the battery cell B according to the heat exchange device of the embodiment. ) Will be larger, and it is considered that the cooling performance will be further improved.

The heat exchange module of the present invention measures heat generation around CPUs and batteries of smartphones and personal computers, measures against heat generation around displays such as LCD TVs, organic ELTVs and plasma TVs, and measures against heat generation around automobile power modules and batteries. , In addition to the cooler used for heat generation measures of stationary heat generators such as supercomputers, it can be used for heaters used for heat absorption measures such as floor heating and snow melting.

1: Flow path forming sheet 10: Exterior body 15: Heat exchange flow path 2: Coating sheet 21: Metal leaf layer 22: Sealant layer 23: Protective layer 31: Outward route entrance 32: Outbound route exit 33: Return route entrance 34: Return route exit 4 : Joint pipe B: Battery cell (heat exchange target member)
L: Coolant (heat exchange medium)
P: Heat exchange panel (heat exchange module)

Claims (9)

An exterior body having a heat exchange flow path is provided inside, and at least a part of the exterior body is composed of a coating sheet made of a laminate material in which a resin sealant layer is laminated on the inner surface side of the metal foil layer, and the heat exchange flow. A heat exchange module configured to exchange heat between a heat exchange medium flowing through the path and a heat exchange target member arranged on the outer surface of the exterior body.
The exterior body is provided with an outward route entrance arranged corresponding to the upstream side of the heat exchange flow path and an outward route outlet arranged corresponding to the outward route entrance.
The exterior body is provided with a return inlet arranged corresponding to the downstream side of the heat exchange flow path and a return outlet arranged corresponding to the return inlet.
The heat exchange medium that has flowed into the exterior body from the outward path inlet is diverted, the mainstream heat exchange medium among the divergent heat exchange media flows out from the outward path outlet, and the sidestream heat exchange medium is the heat exchange flow path. A heat exchange module characterized in that the heat exchange medium is guided to the downstream side through the heat exchange medium, merges with the heat exchange medium flowing in from the return inlet, and flows out from the return outlet. The heat exchange module according to claim 1, wherein one end of a joint pipe is attached to the outward path inlet, the outward path outlet, the return path inlet, and the return path outlet of the exterior body, respectively. The exterior body includes a flow path forming sheet and the covering sheets on both the front and back surfaces joined to the front and back surfaces of the flow path forming sheet.
The heat exchange module according to claim 1 or 2, wherein the flow path forming sheet is provided with the hollow heat exchange flow path and has a function as a spacer in the thickness direction. The heat exchange module according to claim 1 or 2, wherein the exterior body is formed by joining the sealant layers on the outer peripheral edge of the overlapped covering sheets. The heat exchange module according to any one of claims 1 to 4, wherein the laminating material as the covering sheet includes a protective layer made of resin laminated on the outer surface side of the metal foil layer. A heat exchange device in which a plurality of heat exchange modules according to any one of claims 1 to 5 are arranged side by side.
A heat exchange apparatus characterized in that the outward outlet and the return inlet of one of the adjacent heat exchange modules are communicated with each other to the outward inlet and the return outlet of the other heat exchange module. .. The heat according to claim 6, wherein the heat exchange module is formed in a panel shape, the outward path inlet and the return path outlet are formed on the front surface side thereof, and the outward path outlet and the return path inlet are formed on the back surface side. Exchange device. The heat exchange modules are formed in a rectangular panel shape, and the heat exchange modules are arranged side by side at intervals.
The outward path inlet and the return path outlet are formed side by side in the horizontal direction on one end side in the vertical direction on the front surface side of the heat exchange module, and the outward path outlet is on the back surface side corresponding to the outward path inlet and the return path exit. The heat exchange device according to claim 6 or 7, wherein the return inlet is formed. The heat exchange device according to any one of claims 6 to 8, wherein a heat exchange target member is arranged between each of the plurality of heat exchange modules.

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