WO2022265018A1

WO2022265018A1 - Case and pack

Info

Publication number: WO2022265018A1
Application number: PCT/JP2022/023833
Authority: WO
Inventors: 旌君張; 和樹木村; 瑞枝栗谷川; 知記鳥居; 宜秀鳥羽; 高志中田
Original assignee: 三井化学株式会社
Priority date: 2021-06-18
Filing date: 2022-06-14
Publication date: 2022-12-22

Abstract

This case is for controlling the temperature of a heat exchange target body accommodated therein. The case comprises: a housing accommodating the heat exchange target body; and a plurality of metal plates which are fixed to the housing and which are in thermal contact with the heat exchange target body. Heat-exchange flow passages for circulating a heat exchange medium that exchanges heat with the heat exchange target body are formed between each of the plurality of metal plates and the housing. The plurality of heat-exchange flow passages include at least a first heat-exchange flow passage and a second heat-exchange flow passage. The housing has a communication flow passage for providing communication between the first heat-exchange flow passage and the second heat-exchange flow passage.

Description

case and pack

The present disclosure relates to cases and packs.

The secondary batteries installed in electric vehicles generate heat during operation. Such secondary batteries are required to be efficiently cooled in order to suppress deterioration of the secondary batteries.

Patent Literature 1 discloses a battery pack capable of removing heat generated from battery modules. A battery pack disclosed in Patent Document 1 includes a cooling system, a battery module, a lower housing, and an upper housing. A cooling system and battery modules are mounted on the upper surface of the lower housing. The upper housing is combined with the lower housing such that the cooling system and battery module are isolated from the outside. Hereinafter, the lower housing and the upper housing may be collectively referred to as "case".
The cooling system has a plurality of coolant pipes, at least one pipe connecting member, and a plurality of cooling plates. A plurality of refrigerant pipes communicate with the refrigerant inlet or the refrigerant outlet. A pipe connection member communicatively connects at least two refrigerant pipes to alter or divide the flow of liquid refrigerant between the connected refrigerant pipes. A battery module is mounted on one surface of each of the plurality of cooling plates. Each of the plurality of cooling plates includes hollow channels that connect to at least one of the plurality of coolant pipes. The liquid coolant is supplied to different cooling plates through pipe connecting members, and cools the battery modules through the cooling plates by thermal conduction.

　　Patent Document 1: Japanese Patent Publication No. 2018-533167

However, in the battery pack described in Patent Document 1, it is necessary to secure a space for accommodating a plurality of coolant pipes in the limited accommodation space of the case. The “accommodating space of the case” refers to the space in which the battery module is accommodated. Therefore, it is required to make effective use of the limited housing space of the case.
Further, there is a need for a case that is lightweight while still allowing efficient control of the temperature of the heat exchange object.

In view of the above circumstances, an object of the present disclosure is to provide a case and a pack that enable efficient control of the temperature of the heat exchange medium and effective use of the storage space, and are lighter than before. .

Means for solving the above problems include the following embodiments.
<1> A case for controlling the temperature of a heat-exchanging body housed inside,
a housing that accommodates the heat-exchanged body;
A plurality of metal plates fixed to the housing and in thermal contact with the heat exchange object,
Between each of the plurality of metal plates and the housing, a heat exchange flow path for circulating a heat exchange medium that exchanges heat with the heat exchange object is formed,
The plurality of heat exchange channels includes at least a first heat exchange channel and a second heat exchange channel,
A case, wherein the housing has a communication channel for communicating the first heat exchange channel and the second heat exchange channel.
<2> The housing is
a main body;
and at least one communication channel forming part fixed to the main body,
The case according to <1>, wherein the communication channel is formed between the body portion and the at least one communication channel forming portion.
<3> The body portion has at least one housing wall portion for housing the heat-exchanged body,
The at least one housing wall includes an inner surface facing the heat-exchanged body and an outer surface facing the inner surface,
The case according to <2>, wherein the communication channel is formed between the at least one communication channel forming part and the outer surface.
<4> the body portion has at least one groove corresponding to the at least one communication flow path forming portion;
The case according to <2> or <3>, wherein the communication channel is formed by covering the at least one groove corresponding to the at least one communication channel forming part.
<5> The case according to <4>, wherein the groove includes an opening, a bottom surface, and a tapered side surface expanding from the bottom surface toward the opening.
<6> The case according to any one of <1> to <5>, further comprising a packing interposed between each of the plurality of metal plates and the housing.
<7> each of the plurality of metal plates has an uneven structure in a portion that contacts the packing,
The case according to <6>, wherein the packing is made of resin.
<8> The case according to <7>, wherein the recesses in the uneven structure have an average pore size of 5 nm to 500 μm.
<9> The case according to <7> or <8>, wherein the resin includes at least one of a thermoplastic elastomer and a thermosetting elastomer.
<10> The case according to any one of <6> to <9>, wherein the packing is bonded to each of the plurality of metal plates.
<11> The housing has at least one supply port for supplying the heat exchange medium and at least one discharge port for discharging the heat exchange medium,
<1> to <10>, wherein the at least one supply port, the at least one discharge port, each of the plurality of heat exchange channels, and the communication channel communicate with each other; Any one of the cases described.
<12> The case according to any one of <1> to <11>;
A pack comprising the heat-exchanged body housed in the case.
<13> the heat exchange object includes at least one battery module,
The pack according to <12>, wherein the heat exchange medium is a cooling medium.

According to the present disclosure, it is possible to efficiently control the temperature of the heat-exchanging medium and effectively utilize the storage space, and provides a case and pack that are lighter than before.

FIG. 1 is a perspective view showing the appearance of the top side of the pack according to the first embodiment of the present disclosure. FIG. 2 is a perspective view showing the appearance of the upper surface side of the case according to the first embodiment of the present disclosure. FIG. 3 is a perspective view showing the appearance of the lower surface side of the case according to the first embodiment of the present disclosure. FIG. 4 is a perspective view showing the appearance of the upper surface side of the main body according to the first embodiment of the present disclosure. FIG. 5 is a perspective view showing the appearance of the upper surface side of the main body according to the first embodiment of the present disclosure. FIG. 6 is a perspective view showing the appearance of the lower surface side of the main body according to the first embodiment of the present disclosure; 7 is a cross-sectional view taken along line VII-VII of FIG. 6. FIG. FIG. 8 is a perspective view of the housing-side surface of the metal plate according to the first embodiment of the present disclosure. 9 is a top view of the housing according to the first embodiment of the present disclosure; FIG.

In the present disclosure, a numerical range indicated using "to" indicates a range including the numerical values before and after "to" as the minimum and maximum values, respectively.
In the numerical ranges described step by step in the present disclosure, the upper or lower limit values described in a certain numerical range may be replaced with the upper or lower values of other numerical ranges described step by step. You can substitute the values shown in the example.
In the present disclosure, when there are multiple substances corresponding to each component in the material, the amount of each component in the material means the total amount of the multiple substances present in the material unless otherwise specified.

(1) Case The case of the present disclosure is a case for controlling the temperature of an object to be heat exchanged that is housed inside, and includes a housing and a plurality of metal plates. The housing accommodates the heat-exchanged body. A plurality of metal plates are fixed to the housing and are in thermal contact with the heat exchange object. A heat exchange channel for circulating a heat exchange medium is formed between each of the plurality of metal plates and the housing. The heat exchange medium exchanges heat with the object to be heat exchanged. The plurality of heat exchange channels includes at least a first heat exchange channel and a second heat exchange channel. The housing has a communication channel for communicating the first heat exchange channel and the second heat exchange channel.

Each of the "heat exchange flow path" and the "communication flow path" indicates a space through which the heat exchange medium is circulated. "Heat exchange" means heat exchange without mass transfer. A “first heat exchange channel” is any one of a plurality of heat exchange channels. A “second heat exchange channel” is one of a plurality of heat exchange channels and indicates a heat exchange channel different from the first heat exchange channel.

In the case of the present disclosure, by circulating the heat exchange medium through the plurality of heat exchange channels, heat is conducted between the heat exchange object and the heat exchange medium via each independent metal plate. As a result, the case of the present disclosure can efficiently control the temperature of the heat exchange medium.
In the case of the present disclosure, the communication channel functions as a pipe that connects the heat exchange channels. As a result, the heat exchange medium can be supplied to or recovered from each of the plurality of heat exchange channels through the communication channels without the refrigerant pipes or the like used conventionally being arranged in the case. Therefore, the case of the present disclosure is lighter than conventional cases. Furthermore, in the case of the present disclosure, it is not necessary to secure a space for arranging a refrigerant pipe or the like in the accommodation space of the case. The “accommodating space of the case” refers to the space in which the object to be heat-exchanged is accommodated. Therefore, the case of the present disclosure can effectively utilize the accommodation space.
As described above, the case of the present disclosure enables efficient control of the temperature of the heat-exchanging medium and effective use of the storage space, and is lighter than before.

The body to be heat-exchanged is not particularly limited, and examples thereof include a central processing unit (CPU), a memory module, a battery module, a power module, and the like. Examples of memory modules include DIMMs (Dual Inline Memory Modules).
A “battery module” refers to a unit cell assembly in which at least one unit cell is assembled. When at least one cell is a plurality of cells, each of the plurality of cells may be electrically connected in series or in parallel.
A single battery includes a primary battery or a secondary battery. The primary battery is not particularly limited, and examples thereof include a manganese dry battery, a graphite fluoride lithium primary battery, a manganese dioxide lithium primary battery, and the like. Secondary batteries are not particularly limited, and examples thereof include lithium ion batteries, all-solid batteries, lead batteries, nickel-cadmium batteries, and nickel-hydrogen batteries. Examples of the shape of the cell include pouch type (laminate type), square type, cylindrical type, and the like.
The battery module may or may not have a module case. If the battery module does not have a module case, at least one cell is directly (ie, as is) housed in the case of the present disclosure. When the battery module includes a module case, at least one cell is housed in the case of the present disclosure while being housed in the module case. The module case is not particularly limited as long as it is a known module case. Regarding the module case, Japanese Patent No. 6751570, Japanese Patent No. 6645500, etc. can be referred to as appropriate. The battery module may further include protection elements (fuses, PTC (positive temperature coefficient) elements, etc.) and monitoring circuits.

The heat exchange medium exchanges heat with the object to be heat exchanged. The heat exchange medium is a medium for cooling or a medium for heating, and is appropriately selected according to the type of heat-exchanged body.
A cooling medium indicates a medium for removing heat from a heat-exchanged body. Cooling media include cooling liquids, cooling gases, and the like. The cooling liquid is not particularly limited as long as it is a liquid generally used for cooling, and examples thereof include water, oil, glycol-based aqueous solution, refrigerant for air conditioners, non-conductive liquid, phase change liquid, and the like. Examples of the cooling gas include air and nitrogen gas. The temperature of the cooling medium is appropriately adjusted according to the type of the heat exchange medium.
A heating medium indicates a medium for applying heat to a heat-exchanged body. Examples of the heating medium include a heating liquid and a heating gas. The heating liquid is not particularly limited as long as it is a liquid that is generally used as a heating liquid, and examples thereof include water, oil, glycol-based aqueous solutions, refrigerants for air conditioners, non-conductive liquids, phase-change liquids, and the like. Examples of the heating gas include air, water vapor, and the like. The temperature of the heating medium is appropriately adjusted according to the type of heat-exchanged body.

(1.1) Heat Exchange Channels The number of heat exchange channels is not particularly limited as long as it is two or more, and is appropriately adjusted according to the type of heat exchange object, the shape of the housing, and the like. The number of heat exchange channels corresponds to the number of metal plates, and may be equal to or greater than the number of metal plates.
The position, shape, and size of each of the heat exchange channels are such that heat can be conducted between the heat exchange object and the heat exchange medium by circulating the heat exchange medium through the plurality of heat exchange channels. , is not particularly limited.

The interior of the heat exchange channel may have a flow control shape for controlling the flow of the heat exchange fluid. Examples of the flow path control shape include grooves, partition walls, and the like. The partition wall partitions the heat exchange flow path. The channel control shape may be formed on at least one of the housing and the metal plate.
When the flow path control shape is a partition wall, the flow path control shape has a member different from the housing and the metal plate (hereinafter referred to as "flow control member") fixed to at least one of the housing and the metal plate. It may be formed by The partition wall may or may not be in contact with the opposing member. "Opposing member" means a member facing the partition wall, and indicates a metal plate when the partition wall is formed or fixed to the housing, and when the partition wall is formed or fixed to the metal plate shows the housing.
The material of the flow control member may be metal or resin. Examples of materials constituting the flow control member include materials similar to those exemplified as materials constituting the housing described later. A method for fixing the flow control member to at least one of the housing and the metal plate is appropriately selected according to the material of the flow control member, and includes the same method as the first fixing method described later.

(1.2) Housing The housing accommodates the heat-exchanged body.

The shape of the housing is not particularly limited as long as it can accommodate the heat-exchanged body, and examples thereof include a rectangular parallelepiped.

(1.2.1) Communication channel The housing has at least one communication channel.
The number of communication channels is selected according to the number of heat exchange channels, and is not particularly limited. The position of the communication channel is not particularly limited as long as the first heat exchange channel and the second heat exchange channel are communicated with each other. The first heat exchange flow path and the second heat exchange flow path may be connected by one communication flow path, or may be connected by two or more communication flow paths. Each of the shape and size of the communication channel is not particularly limited as long as the first heat exchange channel and the second heat exchange channel can be communicated with each other.

The communication channel may have, for example, the first configuration or the second configuration.
In the first configuration, the housing has a main body portion and at least one communication flow path configuration portion fixed to the main body portion, and the communication flow path includes the main body portion and the at least one communication flow path configuration. It is formed between the department. The communication channel is formed by being surrounded by wall surfaces. In the first configuration, the wall surface surrounding the communication channel is composed of the surface of the main body and the surface of the communication channel forming part on the main body side.
In the second configuration, the communication channel is formed by drilling the housing itself. In the second configuration, the wall surface surrounding the communication channel is composed of the inner peripheral surface of the hole formed by drilling the housing.

Especially, it is preferable that the communication channel has the first configuration.
As a result, the communication flow path can be formed in a desired path more easily than in the case of forming a hole in the housing itself. As a result, the case of the present disclosure can more efficiently control the temperature of the heat exchange medium.

The shape of the communication channel forming portion is not particularly limited as long as it is a shape that constitutes a part of the wall surface surrounding the communication channel. be done.
The method for fixing the communication flow path forming part to the main body (hereinafter referred to as "first fixing method") is not particularly limited, and the material of the portion of the main body that contacts the communication flow path forming part and the connection It is selected according to each material of the common flow path forming part. Examples of the first fixing method include a method using fastening parts (hereinafter referred to as “mechanical fastening”), welding, a method using an insert bonding layer, a method using a known adhesive, welding, and the like. A plurality of fixing methods can also be used in combination. Fastening parts include bolts, nuts, screws, rivets, or pins. Welding includes metal welding or brazing. In the method using an insert bonding layer, the connecting flow path forming part and the main body are inserted into the mold, and the melted material of the insert bonding layer is injected between the connecting flow path forming part and the main body to perform insert bonding. By forming the layer, the connection flow path forming portion is fixed to the main body portion. Welding includes heat welding, vibration welding, laser welding, ultrasonic welding, and hot plate welding.

When the communication channel has the first configuration, the communication channel may have the first A configuration or the first B configuration.
In the 1A configuration, the main body has at least one groove corresponding to at least one communication flow path forming part, and the communication flow path has at least one groove corresponding to the at least one communication flow path forming part. formed by covering the
In the 1B configuration, the main body portion does not have a groove portion, at least one communication flow path forming portion is grooved, and the communication flow path is such that at least one communication flow path forming portion is formed on the surface of the main body portion. formed by covering the

"The main body has at least one groove corresponding to at least one communication flow path constituting part" means that one groove is formed in the main body for one communication flow path constituting part. indicate.

Above all, it is preferable that the communication channel has the 1A configuration.
As a result, the housing can be formed more compactly than a configuration in which the communication flow path is formed by covering the surface of the housing having no groove with the grooved communication flow path forming portion. As a result, the disclosed case can be more compact.

When the communication channel has the 1A configuration, the cross-sectional shape of the groove is not particularly limited, and may be a first tapered shape, a second tapered shape, a V shape, a U shape, or the like.
In the first tapered shape, the groove includes an opening, a bottom surface, and a first tapered side surface. The first tapered side widens from the bottom toward the opening.
In the second tapered shape, the groove includes an opening, a bottom surface, and a second tapered side surface. The second tapered side tapers from the bottom toward the opening.

Among others, the cross-sectional shape of the groove is preferably the first tapered shape.
When manufacturing the main body by injection molding, press molding, or die-casting, the main body requires a mold draft angle. In the first shape, the slope of the tapered side surface is a draft angle. Thereby, the body can be manufactured by injection molding or press molding or die casting. Therefore, the main body is likely to be mass-produced by injection molding, press molding, or die casting. As a result, the case of the present disclosure tends to be easier to manufacture and is more cost effective to manufacture.

(1.2.2) Body portion The body portion has at least one housing wall portion for housing the body to be heat-exchanged, and the housing wall portion has an inner surface facing the body to be heat-exchanged and an inner side surface facing the body. It is preferable that the communication channel is formed between at least one communication channel forming portion and the outer surface of the housing wall portion.
In other words, it is preferable that the heat exchange channel is formed on the inner side of the housing wall, and the communication channel is formed on the outer side of the housing wall. The body to be heat-exchanged is housed on the inner side surface of the housing wall. As a result, the heat exchange medium flowing through the communication channel is less likely to come into thermal contact with the heat-exchanged body than in the configuration in which the communication channel is formed on the inner side surface of the housing wall. As a result, the case of the present disclosure can more efficiently control the temperature of the heat exchange medium.
Furthermore, the case of the present disclosure can secure a wider storage space than a configuration in which a communication channel is formed on the inner side surface of the storage wall. As a result, the case of the present disclosure can facilitate effective utilization of the storage space.
Since the communication flow path is formed on the outer side surface of the housing wall, if the heat exchange medium leaks from the communication flow path, the communication flow path is formed on the inner side surface of the housing. However, it is difficult for the leaked heat exchange medium to reach the object to be heat exchanged. As a result, the case of the present disclosure can more safely accommodate the heat-exchanged body.

The shape of the housing wall portion is not particularly limited as long as it is capable of housing the body to be heat-exchanged, and is preferably a container-like object with an opening on the side opposite to the direction of gravity (hereinafter referred to as "upper").
The containing wall preferably includes a bottom wall and an enclosing wall. The surrounding wall portion is erected upward from the peripheral edge portion of the bottom wall portion. The surrounding wall portion is formed to surround the heat-exchanged body. The bottom wall portion and the surrounding wall portion constitute the accommodation space. The shape of the enclosure wall depends on the shape of the peripheral edge of the bottom wall. The shape of the surrounding wall is not particularly limited, and may be rectangular, polygonal (excluding rectangular), round, elliptical, or the like in plan view. A “planar view” indicates a view from above downward (toward the direction of gravity).
The number of accommodation walls may be one or more, and may be two or more.
When the shape of the housing wall is a container-like object that opens upward, the housing may include a lid that covers the housing space.

When the number of housing walls is two or more, the main body may have connection walls. The connection wall connects the housing walls.

The housing has at least one supply port for supplying the heat exchange medium and at least one discharge port for discharging the heat exchange medium, the at least one supply port and the at least one discharge port It is preferable that each of the plurality of heat exchange channels and the communication channel communicate with each other.
Thereby, when the heat exchange medium is supplied from the supply port of the housing, the heat exchange medium flows through each of the plurality of heat exchange channels via the communication flow channel and is discharged from the discharge port of the housing. can be As a result, the case of the present disclosure can more efficiently control the temperature of the heat exchange medium.

The number and positions of the supply ports are not particularly limited, and can be selected according to the size of the housing. Each of the number and positions of the outlets is not particularly limited, and can be selected according to the size of the housing and the like. The number of supply ports and the number of discharge ports may be the same or different.

The material forming the housing may be metal or resin.
The metal forming the housing is not particularly limited, and examples thereof include metals similar to the metals exemplified as the metal forming the metal plate described later.
The resin constituting the housing is not particularly limited, and can be selected according to the use of the case. Examples of the resin forming the housing include thermoplastic resins (including elastomers), thermosetting resins, and the like. Examples of thermoplastic resins (including elastomers) include polyolefin resins, polyvinyl chloride, polyvinylidene chloride, polystyrene resins, acrylonitrile-styrene copolymer (AS) resins, acrylonitrile-butadiene-styrene copolymer (ABS) resins, polyester resin, poly(meth)acrylic resin, polyvinyl alcohol, polycarbonate resin, polyamide resin, polyimide resin, polyether resin, polyacetal resin, fluorine resin, polysulfone resin, polyphenylene sulfide resin, polyketone resin etc. Thermosetting resins include, for example, phenol resins, melamine resins, urea resins, polyurethane resins, epoxy resins, unsaturated polyester resins, and the like. These resins may be used alone or in combination of two or more. The resin forming the housing may contain a filler from the viewpoint of improving the mechanical strength of the housing. Examples of fillers include glass fibers, carbon fibers, carbon particles, clay, talc, inorganic substances, minerals, and cellulose fibers. The resin forming the housing may contain a flame retardant from the viewpoint of imparting self-extinguishing properties to the housing. Examples of flame retardants include halogen flame retardants and non-halogen flame retardants. Halogenated flame retardants include, for example, aliphatic bromine compounds, aromatic bromine compounds, and chlorine compounds. Non-halogen flame retardants include, for example, phosphorus flame retardants, inorganic flame retardants, silicone flame retardants, and nitrogen flame retardants. The resin forming the housing may contain a compounding agent. Compounding agents include, for example, heat stabilizers, antioxidants, pigments, weathering agents, plasticizers, dispersants, lubricants, release agents, antistatic agents, and the like.
The housing may be a metal molded product or a resin molded product. Metal molded products include roll molded products, die cast molded products, machined products, rolled products, press molded products, or extruded products. Resin molded products include injection molded products and press molded products.

When the housing has a main body and at least one communication flow path forming part, the material constituting each of the main body and the at least one communication flow path forming part is the material composing the housing. and similar ones. The material forming the main body portion and the material forming at least one communication flow path forming portion may be the same or different.
In the case where the housing has a lid, examples of the material that constitutes the lid are the same as those exemplified as the materials that constitute the housing. The material forming the lid and the material forming the main body may be the same or different.

(1.3) Metal plate A metal plate is a plate-like object made of metal.
The shape of the metal plate may be any shape that forms a heat exchange flow path between the housing and the metal plate, and is appropriately selected according to the type of heat-exchanged body, the shape of the housing, and the like. The size of the metal plate is appropriately selected according to the type of heat-exchanged body, the size of the housing, and the like.
The material of the metal constituting the metal plate is not particularly limited, and examples include iron, copper, nickel, gold, silver, platinum, cobalt, zinc, lead, tin, titanium, chromium, aluminum, magnesium, manganese, and alloys thereof. (stainless steel, brass, phosphor bronze, etc.) and the like. Among them, from the viewpoint of thermal conductivity, the material of the metal forming the metal plate is preferably aluminum, an aluminum alloy, copper, or a copper alloy, and more preferably copper or a copper alloy. From the viewpoint of weight reduction and ensuring strength, the material of the metal forming the metal plate is preferably aluminum or an aluminum alloy.
The metal plate may be a metal molding. Metal molded products include roll molded products, die cast molded products, machined products, rolled products, press molded products, or extruded products.

The metal plate is fixed to the housing to form a heat exchange channel between the metal plate and the housing.
A method for fixing the metal plate to the housing (hereinafter referred to as "second fixing method") is not particularly limited, and the same method as the first fixing method can be used. In the method using an insert bonding layer, a metal plate and a housing are inserted into a mold, and a melt of the insert bonding layer is injected between the metal plate and the housing to form an insert bonding layer, whereby the metal Secure the plate to the housing.

The metal plate is in thermal contact with the heat exchange object.
The metal plate may be in direct physical contact with the body to be heat-exchanged, or may be in indirect physical contact with the body to be heat-exchanged.
The metal plates may, for example, be in thermal contact via a heat conducting layer. The heat-conducting layer is not particularly limited, and may be a heat-conducting sheet or a heat-conducting material (TIM: Thermal Interface Material) layer. A thermally conductive material layer indicates a layer formed by applying a thermally conductive material. Thermally conductive materials include thermally conductive greases, thermally conductive gels, thermally conductive adhesives, Phase Change Materials, and the like.

(1.4) Packing Preferably, each of the plurality of metal plates further includes a packing interposed between itself and the housing.
As a result, the sealing performance between each of the plurality of metal plates and the housing is superior to that in which the case is provided with no packing. As a result, the case of the present disclosure can more reliably prevent leakage of the heat exchange medium or entry of foreign matter from the outside through the gap between each of the plurality of metal plates and the housing.

The position of the packing may be formed at a position that can improve the airtightness of the heat exchange flow path. For example, the packing is formed along the periphery of the surface of the metal plate facing the housing. is preferred.

The packing is preferably joined to each of the plurality of metal plates. Thereby, the occurrence of gaps between the packing and the plurality of metal plates can be prevented more reliably. Furthermore, the packing is less likely to detach from each of the plurality of metal plates than if the packing were not bonded to each of the plurality of metal plates. As a result, the airtightness of the heat exchange passage is further improved, and the excellent airtightness of the heat exchange passage is maintained for a long period of time. For example, even if the metal plate is bent rather than flat, and the sealing surface of the metal plate with the housing has a complicated shape, the packing is joined to the metal plate to facilitate heat exchange. The airtightness of the irrigation channel is better.

When the material of the packing is a resin, the method of joining the packing and the metal plate is not particularly limited, and examples include an insert molding method, a method using a known adhesive, and a welding method. In the insert molding method, a metal plate is inserted into an injection mold, and a molten material of the packing material is injection-molded onto a predetermined portion of the surface of the metal plate on the housing side. A method of joining the packing to the metal plate by inserting the packing into the metal mold and heat-curing the material of the packing in contact with a predetermined portion of the housing-side surface of the metal plate in the mold. In the welding method, the portion of the packing that contacts the metal plate is melted by a hot plate, vibration, laser, or the like, and the packing is joined to the metal plate.

It is preferable that each of the plurality of metal plates has an uneven structure at a portion that contacts the packing, and that the packing is made of resin.
As a result, part of the packing enters the concave portion of the concave-convex structure, and the packing is more strongly bonded to the metal plate than in the case where the metal plate does not have the concave-convex structure at the part that contacts the packing. As a result, the case of the present disclosure can more reliably prevent leakage of the heat exchange medium or entry of foreign matter from the outside through the gap between each of the plurality of metal plates and the housing.

The state of the concave-convex structure is not particularly limited as long as a sufficient bonding strength with the packing can be obtained.
The average pore diameter of the recesses in the uneven structure may be, for example, 5 nm to 500 μm, preferably 10 nm to 150 μm, more preferably 15 nm to 100 μm, from the viewpoint of further improving the bonding strength between the metal plate and the packing.
The average pore depth of recesses in the uneven structure may be, for example, 5 nm to 500 μm, preferably 10 nm to 150 μm, more preferably 15 nm to 100 μm.
When either or both of the average pore diameter and the average pore depth of the recesses in the uneven structure are within the above numerical range, stronger bonding tends to be obtained.
The method for measuring the average pore diameter and average pore depth of the recesses is a method based on JIS B0601-2001.

The uneven structure is formed by roughening the surface of the metal plate. The method of roughening the surface of the metal member is not particularly limited, and various known methods can be used.
The surface of the metal plate may be treated to add functional groups from the viewpoint of improving the bonding strength between the metal plate and the packing. Various known methods can be used for the treatment of adding functional groups.

(1.4.1) Material of Packing The material of the packing may be metal or resin.
When the material of the packing is metal, the material of which the packing is made may be the same as those exemplified as the metal that makes up the housing.

In the case where the material of the packing is a resin, the material constituting the packing includes thermoplastic elastomers, thermosetting elastomers, etc., in addition to the same materials as those exemplified as the resins constituting the housing. The tensile modulus at 25° C. of the thermoplastic elastomer is less than 6.0×10 ⁸ Pa. The tensile modulus of the thermoset elastomer at 25° C. is less than 6.0×10 ⁸ Pa.

Above all, it is preferable that the resin, which is the material of the packing, contains at least one of a thermoplastic elastomer and a thermosetting elastomer. In other words, the packing preferably has elasticity. As a result, when the packing is attached to the case, the surface of at least one of the metal plate and the housing is more resistant than when the resin, which is the material of the packing, does not contain at least one of the thermoplastic elastomer and the thermosetting elastomer. Easy to follow shape. Therefore, the occurrence of a gap between the packing and at least one of the metal plate and the housing can be more reliably prevented. As a result, the airtightness of the heat exchange channel is further improved.

A thermoplastic elastomer is an elastic material that does not need to be vulcanized like rubber. Thermoplastic elastomers generally have a hard component (hard and rigid component) and a soft component (soft and flexible component).

Thermoplastic elastomers are elastic materials that do not require vulcanization like rubber. Thermoplastic elastomers generally have a hard component (hard and rigid component) and a soft component (soft and flexible component). Examples of thermoplastic elastomers include urethane-based thermoplastic elastomers (TPU), amide-based thermoplastic elastomers (TPAE), olefin-based thermoplastic elastomers (TPO), styrene-based thermoplastic elastomers (TPS), and polyester-based thermoplastic elastomers ( TPEE), thermoplastic vinyl chloride elastomer (TPVC), and the like.
Among them, the thermoplastic elastomer preferably contains any one of TPU, TPAE, and TPEE from the viewpoint of adhesive strength, airtightness, and heat resistance.
From the viewpoint of cost and repairability (ease of releasability), the thermoplastic elastomer preferably contains either TPO or TPS.
Thermosetting elastomers include one-component curable elastomers, two-component curable elastomers, and UV (Ultraviolet) curable elastomers.
A one-liquid curable elastomer refers to an elastomer in which the main component is cured by heating alone without using a curing agent. A two-liquid curable elastomer is an elastomer whose curing reaction is accelerated by mixing, for example, a component called a main agent and a component called a curing agent at an arbitrary mixing ratio. When using a two-liquid curing type elastomer, the curing reaction may be accelerated at room temperature, or the effective reaction may be accelerated by heating. A UV curable elastomer indicates an elastomer in which the polymerization reaction of the main agent proceeds when irradiated with UV. The UV curable elastomer may contain a known photopolymerization initiator.
As the one-liquid curable elastomer, a known one-liquid curable elastomer can be used. As the two-pack curable elastomer, a known two-pack curable elastomer (for example, olefinic rubber such as ethylene/propylene/diene copolymer rubber (EPDM)) can be used. A known UV curable elastomer can be used as the UV curable elastomer.

(2) Pack The pack of the present disclosure includes the case of the present disclosure and an object to be heat-exchanged. The body to be heat-exchanged is housed in a case.
Thereby, the pack of the present disclosure can adjust the temperature of the heat exchange object by heat conduction through each independent metal plate by circulating the cooling medium in the heat exchange flow path. As a result, the pack of the present disclosure can efficiently adjust the temperature of the heat exchange object.

"Pack" indicates a unit including the case of the present disclosure and the heat-exchanged body housed in the case of the present disclosure.

In the pack of the present disclosure, it is preferable that the body to be heat exchanged includes at least one battery module, and the heat exchange medium is a cooling medium.
Thereby, the pack of the present disclosure can cool the temperature of at least one battery module by heat conduction through each independent metal plate by circulating a cooling medium in the heat exchange channel. . As a result, the battery pack of the present disclosure can efficiently cool the temperature of at least one battery module.

(3) Example of Pack Hereinafter, embodiments of the case of the present disclosure and the pack of the present disclosure will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

A pack 1 according to a first embodiment of the present disclosure will be described with reference to FIGS. 1 to 9. FIG.

A pack 1 (hereinafter referred to as "battery pack 1") is suitably used as a power source for an electric vehicle. An electric vehicle includes an electric four-wheeled vehicle or an electric two-wheeled vehicle. The electric four-wheeled vehicle includes an electric vehicle (EV), a plug-in hybrid electric vehicle (PHEV), or a hybrid vehicle (HV). Electric motorcycles include electric motorcycles and electrically assisted bicycles.

The battery pack 1 is a cuboid, as shown in FIG. A battery pack 1 includes a case 2 and a plurality of battery modules 3 . A plurality of battery modules 3 are housed in the case 2 . The plurality of battery modules 3 is an example of a heat exchange object.

In the following description, the lateral direction of the battery pack 1 is referred to as the "front-rear direction," the longitudinal direction of the battery pack 1 as the "left-right direction," and the direction perpendicular to the front-rear direction and the left-right direction as the "vertical direction."
The direction from top to bottom is parallel to the direction of gravity. When the battery pack 1 is used in an electric four-wheeled vehicle, the front-rear direction is parallel to the front-rear direction of the electric four-wheeled vehicle. The left-right direction is parallel to the width direction of the electric four-wheel vehicle.

The size of the battery pack 1 is appropriately adjusted according to the application of the battery pack 1 and the like. When the battery pack 1 is used in an electric four-wheel vehicle, the size of the battery pack 1 is appropriately selected according to the type of the electric four-wheel vehicle. When the electric four-wheeled vehicle is an electric vehicle (EV), the size of the battery pack 1 is, for example, approximately 1200 mmW×1800 mmD×200 mmH. If the electric four-wheeled vehicle is not an electric vehicle (EV), for example, the size of the battery pack 1 is approximately 900 mmW×700 mmD×200 mmH.

(3.1) Case Next, case 2 according to the first embodiment of the present disclosure will be described with reference to FIGS. 1 to 3. FIG.

The case 2 is used to cool the temperature of the plurality of battery modules 3 housed inside. The case 2 includes a housing 10 (see FIG. 1) and four metal plates 20, as shown in FIG. Each of the four metal plates 20 is fixed to the housing 10 by mechanical fastening.

In the first embodiment, four heat exchange flow paths AR are formed on the upper surface side of the case 2 . As shown in FIG. 3, six communication channels BR are formed on the lower surface side of the case 2 .
The four heat exchange flow paths AR and the six communication flow paths BR communicate with each other.

(3.1.1) Housing The housing 10 accommodates a plurality of battery modules 3 . As shown in FIG. 3, the housing 10 has a main body portion 11, six piping plates 12, and a lid portion 13 (see FIG. 1). Each of the six piping plates 12 is fixed to the main body 11 by mechanical fastening. The lid portion 13 is detachably attached to the body portion 11 .
The six piping plates 12 are an example of a communication channel forming part.

(3.1.1.1) Main Body Next, the main body 11 according to the first embodiment of the present disclosure will be described with reference to FIGS. 1 to 6. FIG.

As shown in FIG. 4, the main body part 11 is a container-like object with an upper opening. The body portion 11 has a first containing wall portion 14, a second containing wall portion 15, and a connection wall portion 16 on the upper surface side. The first containing wall portion 14, the connecting wall portion 16, and the second containing wall portion 15 are arranged continuously from right to left in this order. The first containing wall portion 14, the connecting wall portion 16, and the second containing wall portion 15 are integrated. The material of the body portion 11 is resin.

(a) Housing Wall Section The first housing wall section 14 houses the battery modules 3 . The first containing wall portion 14 includes a first bottom wall portion 141 and a first surrounding wall portion 142 . The first surrounding wall portion 142 surrounds the plurality of battery modules 3 . The first bottom wall portion 141 and the first surrounding wall portion 142 are integrated. The first bottom wall portion 141 and the first surrounding wall portion 142 form a housing space.

The second housing wall portion 15 houses a plurality of battery modules 3 . The second containing wall portion 15 includes a second bottom wall portion 151 and a second surrounding wall portion 152 . The second surrounding wall portion 152 surrounds the plurality of battery modules 3 . The second bottom wall portion 151 and the second surrounding wall portion 152 are integrated. The second bottom wall portion 151 and the first surrounding wall portion 152 form an accommodation space.

(b) Recesses As shown in FIG. 4, the main body 11 has four recesses A on the top surfaces of the first housing wall 14, the second housing wall 15, and the connection wall 16. formed.
Each of the four recesses A is covered with a metal plate 20. As shown in FIG. Thereby, a heat exchange flow path AR is formed between the body portion 11 and the metal plate 20 .
Through holes H1 to H8 are formed in the four recesses A, as shown in FIGS. Each of the through holes H1 to H8 extends substantially vertically.

(c) Grooves As shown in FIG. 6, the main body 11 has six grooves B formed on the lower surfaces of the first housing wall 14, the second housing wall 15, and the connection wall 16. ing.
Through holes H2 to H7 are formed in the six grooves B, as shown in FIG. The through hole H2 of the groove B (see FIG. 6) and the through hole H2 of the recess A (see FIG. 5) communicate with each other. Similarly, the through holes H3 to H7 of the six grooves B (see FIG. 6) and the through holes H3 to H7 of the four recesses A (see FIGS. 4 and 5) communicate with each other.

As shown in FIG. 7, the groove B includes an opening G, a bottom surface CS11, and a first tapered side surface DS11. The bottom surface CS11 and the first tapered side surface DS11 are formed continuously. The first tapered side surface DS11 expands from the bottom surface CS11 toward the opening G. In other words, the first tapered side surface DS11 widens downward.

(3.1.1.2) Piping Plate The piping plate 12 is a long flat plate. The piping plate 12 is processed to match the shape of the groove portion B. As shown in FIG. The material of the piping plate 12 is resin.

(3.1.1.3) Supply Port and Discharge Port As shown in FIG. 6, the housing 10 has one supply port H9 and one discharge port H10 on the lower surface side of the body portion 11. As shown in FIG. An external supply unit is connected to the supply port H9. The supply unit supplies the cooling medium to the battery pack 1 . An external recovery unit is connected to the discharge port H10. The recovery unit recovers the cooling medium discharged from the battery pack 1 .
The supply port H9 communicates with the through hole H1. Therefore, the through hole H1 communicates the supply port H9 and the heat exchange flow path AR.
The outlet H10 communicates with the through hole H8. Therefore, the through hole H8 communicates with the outlet H10 and the heat exchange flow path AR.

(3.1.2) Metal Plate A metal plate 20 according to the first embodiment of the present disclosure will be described with reference to FIGS. 1 to 8. FIG.

The metal plate 20 is a plate-like object made of metal, as shown in FIG. The metal plate 20 is processed to match the shape of the recess A. A heat conductive layer is formed on the surface of the metal plate 20 opposite to the surface ES20 on the housing 10 side. The surface ES20 of the metal plate 20 faces the housing 10 in the housing 10 .

(3.1.3) Packing Case 2 includes packing 30 . As shown in FIG. 8, it is formed along the periphery of the surface ES20 of the metal plate 20 on the body portion 11 side. The material of the packing 30 is resin. The resin contains at least one of a thermoplastic elastomer and a thermosetting elastomer. In case 2 , packing 30 is interposed between metal plate 20 and body portion 11 . The metal plate 20 has an uneven structure on at least a portion of the surface ES20 on the housing 10 side that contacts the packing 30 . The average pore diameter of the recesses in the uneven structure is 5 nm to 500 μm. The packing 30 is joined to the surface ES20 of the metal plate 20 on the housing 10 side by an insert molding method.

(3.2) Flow of Cooling Medium Next, the flow of the cooling medium flowing through the case 2 will be described with reference to FIGS. 1 to 9. FIG. In FIG. 9, symbol F indicates the main flow direction of the cooling medium.

The metal plate 20 is in thermal contact with the multiple battery modules 3 . The metal plate 20 is in indirect physical contact with the plurality of battery modules 3 via the heat-conducting layer.

As shown in FIG. 9, the cooling medium is supplied from an external supply unit along the flow direction F to the supply port H9 on the lower surface side of the case 2, and passes through the heat exchange flow path AR and the communication flow path BR. Then, it is discharged to the outside of the main body 11 from the discharge port H10 on the lower surface side of the case 2, and is collected by the external collection unit. At this time, the cooling medium exchanges heat with the plurality of battery modules 3 via the metal plate 20 .
In this manner, the cooling medium absorbs heat from the plurality of battery modules 3 inside case 2 and discharges it to the outside of case 2 . That is, the battery pack 1 promotes heat dissipation of the plurality of battery modules 3 .

(3.3) Functions and Effects As described with reference to FIGS. A plurality of metal plates 20 are fixed to the housing 10 and are in thermal contact with the heat exchange object. A heat exchange flow path AR is formed between each of the plurality of metal plates 20 and the housing 10 . The housing 10 has a communication channel BR.
Thus, in the case 2, by circulating the cooling medium through the plurality of heat exchange channels AR, heat is conducted between the cooling medium and the plurality of battery modules 3 via the respective independent metal plates 20. . As a result, the case 2 can efficiently control the temperatures of the plurality of battery modules 3 .
In case 2, the cooling medium is supplied to or recovered from each of the plurality of heat exchange channels AR via the communication channel BR without the refrigerant pipes or the like used conventionally being arranged in the case. obtain. Therefore, the case 2 is lighter than before. Furthermore, in the case 2, it is not necessary to secure a space for arranging a refrigerant pipe or the like in the housing space of the case 2. Therefore, the case 2 can effectively utilize the accommodation space.
As described above, the case 2 enables efficient control of the temperature of the cooling medium and effective use of the storage space, and is lighter than the conventional one.

As described with reference to FIGS. 1 to 9, the housing 10 has the body portion 11 and the piping plate 12. As shown in FIG. The communication channel BR is formed between the body portion 11 and the piping plate 12 .
As a result, the communication flow path BR is more likely to be formed in a desired path than in the case where it is formed by drilling the housing 10 itself. As a result, case 2 can control the temperature of the cooling medium more efficiently.

As described with reference to FIGS. 1 to 9, the body portion 11 has the first containing wall portion 14 and the second containing wall portion 15. As shown in FIG. The first housing wall portion 14 includes an upper surface TS14 (see FIG. 4) facing the plurality of battery modules 3 and a lower surface BS14 (see FIG. 6) facing the upper surface. Two communication channels BR are formed between the piping plate 12 and the lower surface BS14. The second containing wall portion 15 includes an upper surface TS15 (see FIG. 4) facing the plurality of battery modules 3 and a lower surface BS15 (see FIG. 6) facing the upper surface. Two communication channels BR are formed between the piping plate 12 and the lower surface BS15.
That is, the heat exchange flow path AR is formed on the upper surface side of the first containing wall portion 14 and the second containing wall portion 15 (hereinafter referred to as "the first containing wall portion 14, etc."), and the communication flow path BR It is formed on the lower surface side of the first housing wall portion 14 and the like. As a result, the cooling medium flowing through the communication channel BR is less likely to come into thermal contact with the plurality of battery modules 3 than in a configuration in which the communication channel BR is formed on the upper surface side of the first containing wall portion or the like. As a result, case 2 can control the temperature of the cooling medium more efficiently.
Furthermore, the case 2 can secure a wider accommodation space than the configuration in which the communication flow path BR is formed on the upper surface side of the first accommodation wall portion 14 and the like. As a result, the case 2 can facilitate effective utilization of the accommodation space.
Since the communication flow path BR is formed on the lower surface side of the first containing wall portion 14 and the like, when the cooling medium leaks from the communication flow path BR, the communication flow path BR is formed on the upper surface side of the housing 10. Leaked cooling medium is less likely to reach the plurality of battery modules 3 than the formed configuration. As a result, the case 2 can more safely accommodate the plurality of battery modules 3 to be accommodated.

As described with reference to FIGS. 1 to 9, the body portion 11 has the groove portion B corresponding to the piping plate 12. As shown in FIG. The communication channel BR is formed by covering the corresponding groove B with the pipe plate 12 .
As a result, the housing 10 can be formed more compactly than the structure in which the communication flow path BR is formed by covering the surface of the housing 10 without the groove B with the grooved communication flow path forming part. As a result, case 2 can be more compact.

As described with reference to FIGS. 1 to 9, groove B includes opening G, bottom surface CS11, and first tapered side surface DS11. A first tapered side surface DS11 expands from the bottom surface CS11 toward the opening G. As shown in FIG.
The slope of the tapered side surface DS11 is a draft angle. Thereby, the body part 11 can be manufactured by injection molding, press molding, or die casting. Therefore, the body portion 11 is easily mass-produced by injection molding, press molding, or die-cast molding. As a result, the case 2 tends to be manufactured more easily and is more cost effective to manufacture.

As described with reference to FIGS. 1-9, metal plate 20 further comprises packing 30 .
Thereby, the sealing performance between the metal plate 20 and the housing 10 is superior to that in which the case 2 does not include the packing 30 . As a result, the case 2 can more reliably prevent leakage of the cooling medium or entry of foreign matter from the outside through the gap between the metal plate 20 and the housing 10 .

As described with reference to FIGS. 1 to 9, metal plate 20 has an uneven structure at a portion that contacts packing 30 . The material of the packing 30 is resin.
As a result, part of the packing 30 enters the concave portion of the concave-convex structure, and the packing 30 is more strongly bonded to the metal plate 20 than in a structure in which the contacting portion of the metal plate 20 with the packing 30 does not have the concave-convex structure. As a result, the case 2 can more reliably prevent leakage of the cooling medium or entry of foreign matter from the outside through the gap between the metal plate 20 and the housing 10 .

As described with reference to FIGS. 1 to 9, the average pore size of the recesses in the uneven structure of the metal plate 20 is 5 nm to 500 μm.
This further improves the bonding strength between the metal plate and the packing.

As described with reference to FIGS. 1 to 9, the resin that is the material of the packing 30 includes at least one of thermoplastic elastomer and thermosetting elastomer. That is, the packing 30 has elasticity.
As a result, when the packing 30 is attached to the case 2, the shape of the surface of the housing 10 conforms to the shape of the surface of the housing 10 more than when the resin that is the material of the packing 30 does not contain at least one of a thermoplastic elastomer and a thermosetting elastomer. easy to follow. Therefore, the occurrence of a gap between the packing 30 and the housing 10 can be more reliably prevented. As a result, the airtightness of the heat exchange flow path AR is further improved.

The packing 30 is bonded to the metal plate 20 as described with reference to FIGS. 1-9.
Thereby, the occurrence of a gap between the packing 30 and the metal plate 20 can be prevented more reliably. Furthermore, the packing 30 is less likely to come off from the metal plate 20 than when the packing 30 is not bonded to the metal plate 20 . As a result, the airtightness of the heat exchange flow path AR is further improved, and the excellent airtightness of the heat exchange flow path AR is maintained over a long period of time.

As described with reference to FIGS. 1-9, the housing has one supply port H9 and one discharge port H10. The supply port H9, the discharge port H10, the heat exchange flow path AR, and the communication flow path BR communicate with each other.
Accordingly, when the cooling medium is supplied from the supply port H9 of the housing 10, the cooling medium flows through the heat exchange flow path AR via the communication flow path BR and is discharged from the discharge port H10 of the housing 10. can be As a result, case 2 can control the temperature of the cooling medium more efficiently.

As described with reference to FIGS. 1 to 9, battery pack 1 includes case 2 and a plurality of battery modules 3 .
As a result, the battery pack 1 can cool the temperature of the plurality of battery modules 3 by heat conduction via the independent metal plates 20 by circulating the cooling medium in the heat exchange flow paths AR. can. As a result, the battery pack 1 can efficiently cool the temperature of the plurality of battery modules 3 .

The embodiments of the present disclosure have been described above with reference to the drawings. However, the present disclosure is not limited to the above embodiments, and can be embodied in various aspects without departing from the scope of the present disclosure. In order to facilitate understanding, the drawings schematically show each component mainly, and the thickness, length, number, etc. of each component illustrated are different from the actual ones due to the convenience of drawing. . The materials, shapes, dimensions, and the like of each component shown in the above embodiment are examples and are not particularly limited, and various changes are possible within a range that does not substantially deviate from the effects of the present disclosure.

The disclosure of Japanese Patent Application No. 2021-101971 filed on June 18, 2021 is incorporated herein by reference in its entirety.
All publications, patent applications and technical standards mentioned herein are to the same extent as if each individual publication, patent application and technical standard were specifically and individually noted to be incorporated by reference. incorporated herein by reference.

Claims

A case for controlling the temperature of a heat exchange object housed inside,
a housing that accommodates the heat-exchanged body;
A plurality of metal plates fixed to the housing and in thermal contact with the heat exchange object,
Between each of the plurality of metal plates and the housing, a heat exchange flow path for circulating a heat exchange medium that exchanges heat with the heat exchange object is formed,
The plurality of heat exchange channels includes at least a first heat exchange channel and a second heat exchange channel,
A case, wherein the housing has a communication channel for communicating the first heat exchange channel and the second heat exchange channel.
The housing is
a main body;
and at least one communication channel forming part fixed to the main body,
2. The case according to claim 1, wherein said communication channel is formed between said body portion and said at least one communication channel forming portion.
The main body has at least one housing wall that houses the heat-exchanged body,
The at least one housing wall includes an inner surface facing the heat-exchanged body and an outer surface facing the inner surface,
3. The case according to claim 2, wherein said communication channel is formed between said at least one communication channel forming part and said outer surface.
the body portion has at least one groove corresponding to the at least one communication flow path forming portion;
4. The case according to claim 2, wherein the communication channel is formed by covering the at least one groove corresponding to the at least one communication channel forming part.
The case according to claim 4, wherein the groove includes an opening, a bottom surface, and tapered side surfaces expanding from the bottom surface toward the opening.
The case according to any one of claims 1 to 5, further comprising a packing interposed between each of the plurality of metal plates and the housing.
Each of the plurality of metal plates has an uneven structure at a portion that contacts the packing,
The case according to claim 6, wherein the packing is made of resin.
The case according to claim 7, wherein the average pore diameter of the recesses in the uneven structure is 5 nm to 500 µm.
The case according to claim 7 or claim 8, wherein the resin includes at least one of a thermoplastic elastomer and a thermosetting elastomer.
The case according to any one of claims 6 to 9, wherein the packing is joined to each of the plurality of metal plates.
the housing has at least one supply port for supplying the heat exchange medium and at least one discharge port for discharging the heat exchange medium;
The at least one supply port, the at least one discharge port, each of the plurality of heat exchange channels, and the communication channel are in communication with each other, according to any one of claims 1 to 10. or the case described in paragraph 1.
The case according to any one of claims 1 to 11,
A pack comprising the heat-exchanged body housed in the case.
the heat exchange object includes at least one battery module,
13. A pack as claimed in claim 12, wherein the heat exchange medium is a cooling medium.