WO2020262275A1 - Heat exchanger and manufacturing method therefor - Google Patents

Heat exchanger and manufacturing method therefor Download PDF

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Publication number
WO2020262275A1
WO2020262275A1 PCT/JP2020/024299 JP2020024299W WO2020262275A1 WO 2020262275 A1 WO2020262275 A1 WO 2020262275A1 JP 2020024299 W JP2020024299 W JP 2020024299W WO 2020262275 A1 WO2020262275 A1 WO 2020262275A1
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WO
WIPO (PCT)
Prior art keywords
plate
shaped member
cooling
heat exchanger
pair
Prior art date
Application number
PCT/JP2020/024299
Other languages
French (fr)
Japanese (ja)
Inventor
雅貴 内山
安浩 水野
森本　正和
厚志 矢沢
田中　聡
Original Assignee
株式会社デンソー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Publication of WO2020262275A1 publication Critical patent/WO2020262275A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present disclosure relates to a heat exchanger for cooling a storage battery and a method for manufacturing the heat exchanger.
  • a storage battery heat is generated as it is charged and discharged. If the temperature of the storage battery rises too much, the storage battery deteriorates and its charge / discharge performance deteriorates. Therefore, in addition to the storage battery, the vehicle as described above is provided with a heat exchanger for cooling the storage battery and keeping it at an appropriate temperature.
  • the heat exchanger described in Patent Document 1 below has a configuration in which a flow path through which a heat transfer medium, which is a fluid, flows is formed inside a heat exchange pouch.
  • the storage battery to be cooled is arranged in contact with the heat exchange pouch.
  • the storage battery is cooled by a heat transfer medium flowing inside the heat exchange pouch.
  • the heat exchanger described in Patent Document 1 is configured by joining foil walls, which are a pair of plate-shaped members, to each other to form an integral body. It is considered that each foil wall is formed by press working using a die.
  • the shape of the storage battery mounted on the vehicle is not unified, and various shapes of storage batteries are used depending on the vehicle type.
  • the number of storage batteries mounted on the vehicle also differs depending on the vehicle. Since the heat exchanger needs to cool the entire storage battery, it is necessary to appropriately design the shape according to the shape and number of the storage batteries.
  • An object of the present disclosure is to provide a heat exchanger capable of suppressing a manufacturing cost and a manufacturing method thereof.
  • the heat exchanger according to the present disclosure is a heat exchanger for cooling the storage battery, and includes a plurality of cooling units, which are portions that come into contact with the storage battery and cool the storage battery by a fluid passing through an inner flow path. It is provided with a pair of distribution units connected to both ends of the cooling unit and which are portions for distributing fluid to the cooling unit. Each cooling portion is formed by joining a pair of plate-shaped members to each other. This heat exchanger is configured by connecting each cooling unit to each other via a connecting member.
  • a heat exchanger having such a configuration is configured by connecting a plurality of cooling portions composed of a pair of plate-shaped members via a connecting member. Therefore, it is not necessary to form the entire heat exchanger by press working, and it is not necessary to prepare a large mold for that purpose. It should be noted that at least a part of the above-mentioned distribution unit is configured as a connecting member.
  • the method for manufacturing a heat exchanger according to the present disclosure is a method for manufacturing a heat exchanger having the above configuration, in which at least one of a pair of plate-shaped members has a linear flow path along the longitudinal direction thereof.
  • the distribution unit is formed by pressing the ends of the plate-shaped member in which the linear flow path is formed in the first step and the first step in which the linear flow path is formed by roll forming, along the longitudinal direction thereof. It has a second step of forming a connecting portion which is a portion connected to the above, and a third step of joining a pair of plate-shaped members to each other.
  • the first step is a step of forming a linear flow path, which is a linear flow path along the longitudinal direction of the plate-shaped member, by roll molding.
  • the length of the plate-shaped member obtained in the first step can be easily adjusted so as to be a length corresponding to the number of storage batteries arranged along the longitudinal direction of each cooling portion.
  • the end portion of the plate-shaped member in which the linear flow path is formed in the first step is pressed along the longitudinal direction to form a connecting portion which is a portion connected to the distribution portion. It is a process to do. Since the press working only needs to be applied to the end portion of the plate-shaped member, not the entire plate-shaped member, a relatively small die can be used. Further, since the shape of the connection portion can be a common shape regardless of the shape and the number of storage batteries, there are not too many types of molds to be prepared.
  • the third step is a step of joining a pair of plate-shaped members to each other to form a cooling portion. After the third step or at the same time as the third step, if a plurality of cooling portions are joined to each other via a connecting member and connected, the heat exchanger having the above configuration can be obtained.
  • a heat exchanger capable of suppressing the manufacturing cost and a manufacturing method thereof are provided.
  • FIG. 1 is a diagram showing an overall configuration of a heat exchanger according to the first embodiment.
  • FIG. 2 is a diagram schematically showing a state in which a storage battery is installed in the heat exchanger.
  • FIG. 3 is a diagram showing a pair of plate-shaped members forming a part of the heat exchanger.
  • FIG. 4 is a diagram showing the shape of one of the pair of plate-shaped members.
  • FIG. 5 is a diagram for explaining a method of manufacturing a heat exchanger.
  • FIG. 6 is a diagram showing the shape of the plate-shaped member at the time when the first step is completed.
  • FIG. 7 is a diagram for explaining a method of manufacturing a heat exchanger.
  • FIG. 8 is a diagram schematically showing the overall configuration of the heat exchanger according to the second embodiment.
  • FIG. 1 is a diagram showing an overall configuration of a heat exchanger according to the first embodiment.
  • FIG. 2 is a diagram schematically showing a state in which a storage battery is installed in the heat exchange
  • FIG. 9 is a diagram showing the shape of a plate-shaped member constituting a part of the heat exchanger according to the second embodiment.
  • FIG. 10 is a diagram showing the shape of a plate-shaped member constituting a part of the heat exchanger according to the second embodiment.
  • FIG. 11 is a diagram for explaining the configuration of the heat exchanger according to the third embodiment.
  • the heat exchanger 10 is a device mounted together with the storage battery 20 in an electric vehicle (not shown), and is configured as a device for cooling the storage battery 20 and keeping the temperature at an appropriate temperature.
  • the configuration of the heat exchanger 10 will be described with reference to FIG. As shown in the figure, the heat exchanger 10 includes a cooling unit 11 and a distribution unit 12.
  • the cooling unit 11 is a portion that comes into contact with the storage battery 20 to cool the storage battery 20.
  • the cooling unit 11 is configured as a tubular member extending linearly, and a flow path FP through which a fluid flows is formed inside the cooling unit 11. The specific arrangement of the flow path FP will be described later with reference to FIG.
  • the cooling unit 11 has a substantially rectangular shape when viewed from above.
  • a plurality of cooling units 11 are provided, and are arranged along a direction perpendicular to the longitudinal direction of each.
  • Each cooling unit 11 is parallel to each other, and both ends thereof are connected to the distribution unit 12.
  • a plurality of storage batteries 20 are arranged on the upper surface of the cooling unit 11 as shown in FIG. That is, the upper surface of the cooling unit 11 is in contact with the lower end of each storage battery 20.
  • a low-temperature fluid is flowed through the flow path FP of the cooling unit 11.
  • each storage battery 20 is cooled by the fluid flowing through the flow path FP, and its temperature is lowered.
  • the cooling unit 11 according to the present embodiment is configured as a portion that comes into contact with the storage battery 20 and cools the storage battery 20 by the fluid passing through the inner flow path FP.
  • the cooling unit 11 arranged at the position at the left end in FIG. 1 is provided with an inlet portion 13 and an outlet portion 14.
  • the inlet portion 13 is a portion for receiving a fluid supplied from the outside.
  • the outlet portion 14 is a portion for discharging the fluid after being subjected to heat exchange through the cooling portion 11 to the outside.
  • the inlet portion 13 and the outlet portion 14 are arranged so as to be lined up along the longitudinal direction at a position substantially centered along the longitudinal direction of the cooling portion 11.
  • the flow paths FPs are separated from each other inside the cooling unit 11 at a position between the inlet portion 13 and the outlet portion 14.
  • the flow path of the fluid in the heat exchanger 10 is indicated by a plurality of arrows.
  • the distribution unit 12 is a pair of tubular portions for distributing the fluid to each cooling unit 11. Each distribution unit 12 is arranged so that its longitudinal direction is perpendicular to the longitudinal direction of the cooling unit 11. One distribution unit 12 is connected to one end of each cooling unit 11, and the other distribution unit 12 is connected to the other end of each cooling unit 11. The fluid is supplied from one distribution unit 12 to each cooling unit 11 and then flows into the other distribution unit 12 through the flow path FP. As a result, the flow of the fluid as shown by the arrow in FIG. 1 is realized.
  • the cooling unit 11 and the portions of the distribution unit 12 connected to both ends of the cooling unit join the pair of plate-shaped members 100 and 200 shown in FIG. Therefore, the whole is configured to be one. That is, a part of the distribution unit 12 and the cooling unit 11 are integrally formed on the plate-shaped members 100 and 200, respectively.
  • the plate-shaped members 100 and 200 joined to each other are connected to each other via a plurality of tubular members 30.
  • the tubular member 30 is a tubular member having a flat cross section, and a flow path (not shown) is formed inside the tubular member 30.
  • each of the tubular members 30 is connected to both ends of the plate-shaped members 100 and 200 along the longitudinal direction, and connects between the plate-shaped members 100 and 200 adjacent to each other. ..
  • the extending direction of the flow path formed inside the tubular member 30 is the direction perpendicular to the longitudinal direction of the cooling portion 11, that is, the extending direction of the distribution portion 12.
  • the end portions of the plate-shaped members 100 and 200 along the longitudinal direction and the tubular members 30 are arranged so as to be alternately arranged and connected to each other, and the whole connected in this way is , The above-mentioned distribution unit 12.
  • the respective cooling portions 11 are formed by joining the pair of plate-shaped members 100 and 200 to each other. Further, the heat exchanger 10 is configured by connecting the cooling units 11 to each other. The cooling unit 11 is connected via the tubular member 30. Such a tubular member 30 corresponds to the "connecting member" in the present embodiment.
  • the plate-shaped member 100 and the plate-shaped member 200 are both rectangular members, and their respective shapes in the top view are substantially the same. That is, when the pair of plate-shaped members 100 and 200 are viewed along the direction in which they are joined to each other, the outer shapes (the above-mentioned "rectangle") of the plate-shaped members 100 and 200 are the same as each other.
  • the plate-shaped member 100 is flat as a whole.
  • the plate-shaped member 200 has a recess formed on its surface, whereby a flow path FP or the like is formed between the plate-shaped member 200 and the plate-shaped member 100.
  • the plate-shaped member 100 and the plate-shaped member 200 are overlapped with each other in the vertical direction, and are connected to each other by an adhesive to be integrated.
  • an adhesive for example, a silicone adhesive, an epoxy adhesive, a polyurethane adhesive, or the like can be used. Instead of joining with an adhesive, joining by welding such as brazing, laser welding, resistance welding and the like may be performed.
  • the plate-shaped member 100 is arranged so as to be on the upper side. Therefore, the upper surface of the plate-shaped member 100 is a portion that the storage battery 20 comes into contact with, as shown in FIG.
  • FIG. 4 is a schematic view of the plate-shaped member 200 viewed from the upper side, that is, the side to which the plate-shaped member 100 is joined.
  • the plate-shaped member 200 is formed with a recess that retracts toward the back side of the paper surface, that is, the side opposite to the plate-shaped member 100 in FIG. 4 by roll forming or press working described later.
  • a portion of the plate-shaped member 200 other than the recess, that is, a portion that abuts and is joined to the plate-shaped member 100 is shaded.
  • a recess 210 is formed by retracting the plate-shaped member 200 in a concave shape.
  • the recess 210 is a flow path for the fluid to flow in the distribution section 12.
  • Recesses 211 are formed by retracting the plate-shaped member 200 in a concave shape at positions adjacent to each other on both sides of the recess 210 along the flow path direction of the distribution portion 12, that is, the lateral direction of the plate-shaped member 200. ..
  • the amount of retreat in the recess 211 is larger than the amount of retreat in the recess 210.
  • the recess 211 is a portion through which the tubular member 30 is inserted and joined.
  • the distribution portion 12 of the plate-shaped member 200 formed on one end side and the distribution portion 12 of the plate-shaped member 200 formed on the other end side have symmetrical shapes.
  • a cooling portion 11 of the plate-shaped member 200 is formed between the two as described above.
  • the recess 220 and the recess 230 are formed by retracting the plate-shaped member 200 in a concave shape.
  • the recesses 220 are formed so as to extend linearly along the longitudinal direction of the plate-shaped member 200, and are formed so as to line up three recesses along the lateral direction of the plate-shaped member 200.
  • the recess 230 is formed so as to connect the ends of the recesses 220 adjacent to each other so that the three recesses 220 are connected to form one flow path.
  • the recess 220 and the recess 230 are all one flow path, and the flow path is the flow path FP described above.
  • the fluid flows in a path of one reciprocating and a half along the longitudinal direction of the plate-shaped member 200.
  • the recess 230 corresponds to a "folded portion" that connects the recesses 220 to form a single flow path.
  • a recess 240 is formed at a position between the distribution portion 12 of the plate-shaped member 200 and the cooling portion 11 of the plate-shaped member 200 by retracting the plate-shaped member 200 in a concave shape.
  • the recess 240 connects the flow path FP and the recess 210.
  • Such a recess 240 can be said to be a portion of the cooling unit 11 connected to the distribution unit 12. That is, the recess 240 corresponds to the "connection portion" in the present embodiment.
  • the recesses 240, which are the connecting portions, are formed at positions at both ends of the flow path FP. The fluid flows into the flow path FP from the distribution portion 12 on one side through the recess 240. After passing through the flow path FP, the fluid flows out to the distribution section 12 on the other side through the recess 240.
  • FIG. 5 schematically shows a part of the steps for forming the plate-shaped member 200.
  • reference numeral 310 is a coil material obtained by rolling a metal plate, which is a material of the plate-shaped member 200, into a roll shape.
  • the coil material is also referred to as “coil material 310”.
  • the metal plate for example, aluminum, copper, iron or the like can be used.
  • the coil material 310 is attached to a feeding device (not shown) and rotates around its central axis in the direction indicated by the arrow in FIG. As a result, the flat plate-shaped member 311 is sent out from the coil material 310 at a constant speed.
  • the plate-shaped member 311 is a member that finally becomes the plate-shaped member 200.
  • reference numeral 320 is a pair of rollers provided in the roll forming machine. Hereinafter, these rollers are also referred to as “roller 320". On the outer peripheral surface of each roller 320, irregularities (not shown) facing each other are formed.
  • the plate-shaped member 311 is deformed by being sandwiched between rollers 320 and performing so-called roll forming, and becomes a plate-shaped member 312 in which a plurality of linear recesses are formed along the longitudinal direction thereof. After that, the plate-shaped member 312 is cut to a predetermined length by the cutting machine 330 to become the plate-shaped member 313.
  • the plate-shaped member 313 formed as described above is drawn from the same viewpoint as in FIG.
  • diagonal lines are provided on the portions excluding the concavely retracted portion due to roll molding.
  • the portion not shaded is a linear recess 220 extending along the longitudinal direction of the plate-shaped member 313.
  • the recess 220 is formed so as to extend from one end to the other end of the plate-shaped member 313 in the longitudinal direction.
  • Three recesses 220 are formed so as to be lined up along the lateral direction of the plate-shaped member 313.
  • Each recess 220 is the source of the recess 220 shown in FIG. 4, and finally becomes the flow path FP.
  • Such a recess 220 corresponds to the "straight flow path" in the present embodiment.
  • the process described above that is, the process until the plate-shaped member 313 is formed, is formed along the longitudinal direction of the plate-shaped member 200, which is one of the pair of members for forming the cooling portion 11.
  • This is a step of forming a linear flow path, which is a linear flow path, by roll molding.
  • the step corresponds to the "first step" in the present embodiment.
  • FIG. 6 shows the shape of the plate-shaped member 313 at the time when the first step is completed.
  • the plate-shaped member 100 shown in FIG. 3 is also separately formed.
  • the method for forming the plate-shaped member 100 can be formed by going through the same steps as those described above without using the roller 320 shown in FIG.
  • FIG. 7 schematically shows a step for forming the plate-shaped member 200, which is performed following the first step. In this step, both ends of the plate-shaped member 313 along the longitudinal direction are pressed.
  • reference numeral 340 is a pair of dies that directly sandwich the plate-shaped member 313 in the press machine.
  • the mold is also referred to as "mold 340".
  • the portion sandwiched between the dies 340 and pressed is the portion surrounded by the dotted line DL1 in FIG.
  • the portion of the plate-shaped member 200 that has been pressed is also surrounded by the dotted line DL1. That is, the portion of the plate-shaped member 313 shown in FIG. 6 surrounded by the dotted line DL1 is plastically deformed by being pressed, and is surrounded by the dotted line DL1 of the plate-shaped member 200 shown in FIG. It becomes the part that is.
  • the recess 240 which is the connecting portion, the distribution portion 12 which is connected to the cooling portion 11 via the connecting portion, and the recess 230 which is the folded portion are formed by the press working. It is formed on the shape member 200 at the same time.
  • the step of forming the plate-shaped member 200 of FIG. 4 by pressing the plate-shaped member 313 is a step performed following the first step, and is the "second step" in the present embodiment. It corresponds to.
  • the distribution section 12 is formed by pressing the end portion of the plate-shaped member 313 in which the recess 220, which is a linear flow path, is formed in the first step along the longitudinal direction thereof. It is a process of forming a connecting portion which is a portion connected to.
  • the plate-shaped member 200 which is one of the pair of members for forming the cooling portion 11.
  • a folded portion that is, a recess 230, which connects the recesses 220 to form a single flow path, is formed together with the recess 240 and the like.
  • a part of the distribution portion 12 that is, a portion of the distribution portion 12 shown in FIG. 1 excluding the tubular member 30 is also formed at the same time on the plate-shaped member 200.
  • the plate-shaped member 100 and the plate-shaped member 200 are overlapped as shown in FIG. 3 and joined to each other with an adhesive.
  • the cooling unit 11 is formed.
  • the heat exchanger 10 shown in FIG. 1 can be obtained by connecting the joined bodies, which are the cooling portions 11, with a plurality of tubular members 30 and joining them with an adhesive.
  • Such a joining step is a step performed following the second step, and corresponds to the "third step" in the present embodiment.
  • the cooling portion 11 is formed by joining the plate-shaped member 100 and the plate-shaped member 200, and the cooling portion 11 is connected by adhering to the tubular member 30 at the same time.
  • the joining of each member in the third step may be bonding with an adhesive as in the present embodiment, or may be brazing with a brazing material.
  • the pair of plate-shaped members 100 and 200 to be joined to each other have their respective outer shapes when viewed along the direction in which they are joined. It is the same.
  • the cooling unit 11 arranged on the leftmost side in FIG. 1 is manufactured through a process different from the second process as described above. As described above, at the position between the inlet portion 13 and the outlet portion 14, the flow path FPs are separated from each other inside the cooling portion 11. In order to form such a flow path FP, it is necessary to separately press the portions in the vicinity of the inlet portion 13 and the outlet portion 14. Further, a step for forming the inlet portion 13 and the outlet portion 14 with respect to the plate-shaped members 100 and 200 constituting the cooling portion 11 is also separately executed.
  • the advantages of the heat exchanger 10 obtained by the above manufacturing method will be described.
  • the shape of the storage battery 20 mounted on the vehicle is not unified, and the storage battery 20 having various shapes is used depending on the vehicle type and the like.
  • the number of storage batteries 20 mounted on the vehicle also differs depending on the vehicle. Since the heat exchanger 10 needs to cool the entire plurality of storage batteries 20, it is necessary to appropriately design the shape according to the shape and the number of the storage batteries 20.
  • the cooling unit 11 when the number of storage batteries 20 arranged on one cooling unit 11 is large, or when the size of the storage batteries 20 along the longitudinal direction of the cooling unit 11 is large, it is necessary to form the cooling unit 11 longer. is there.
  • the plate-shaped members 100 and 200 constituting the cooling unit 11 are formed by roll molding as described with reference to FIG. 5, the length of the cooling unit 11 along the longitudinal direction can be easily increased. Can be adjusted to.
  • the heat exchanger 10 has a configuration in which a plurality of cooling units 11 are connected by a tubular member 30 which is a connecting member, the number of cooling units 11 can be easily increased or decreased. ..
  • the shape of the heat exchanger 10 according to the present embodiment can be easily changed according to the number and shape of the storage batteries 20. Further, since it is not necessary to prepare a plurality of types of large dies and the dies can be formed by the small dies 340, the manufacturing cost thereof can be significantly suppressed as compared with the conventional case.
  • the alternate long and short dash line L1 shown in FIG. 4 is a linear groove formed in a portion of the plate-shaped member 200 in which a part of the distribution portion 12 is formed.
  • the groove is a groove having a minute depth formed as a result of deformation of a corner portion of the recess 220 when the plate-shaped member 313 shown in FIG. 6 is pressed. These grooves are formed so as to extend to the portion shaded in FIG. 4, that is, the portion joined to the plate-shaped member 100. Since the contact area with the adhesive is increased by the groove, the joint strength between the plate-shaped member 100 and the plate-shaped member 200 is increased.
  • a plurality of grooves are formed in the portion of the plate-shaped member 200 in which a part of the distribution portion 12 is formed. By forming these grooves, the joint strength of the pair of plate-shaped members 100 and 200 is increased.
  • the width dimension of the plate-shaped member 200 along the lateral direction is drawn so as to be uniform throughout the plate-shaped member 200.
  • the width dimension of the portion of the plate-shaped member 200 where the distribution portion 12 is formed is slightly larger than the width dimension of the portion where the cooling portion 11 is formed.
  • Such a difference in width dimension is due to local press working on the range of the dotted line DL1.
  • the recess 211 which is a portion through which the tubular member 30 is inserted and joined, is formed large. As a result, the joint strength between the tubular member 30 and the plate-shaped member 200 is increased.
  • one flow path FP is formed by connecting a plurality of recesses 220 with a folded-back portion 230.
  • the fluid flows in a path that makes one and a half round trips along the longitudinal direction of the cooling unit 11. If the flow path FP is formed so that the fluid flows linearly without folding back, the temperature difference of the fluid between one end side and the other end side along the longitudinal direction of the cooling portion is large. turn into.
  • the flow path FP since the flow path FP is formed so that the fluid reciprocates and a half along the longitudinal direction of the cooling unit 11, the temperature difference as described above is suppressed, and each storage battery 20 Can be cooled evenly.
  • the flow path length of the flow path FP becomes long, and the flow path resistance of the flow path FP increases. Therefore, the variation in the amount of fluid distributed to the plurality of cooling units 11 can be suppressed to a low level. As a result, each storage battery 20 can be cooled more evenly.
  • the concave portions 220 and the like are formed only on the plate-shaped member 200 in the first step and the second step, and the plate-shaped member 100 is a flat member as a whole.
  • the plate-shaped member 100 may also have an embodiment in which the recess 220 or the like is formed by the same method as described above.
  • the first step and the second step may be performed on the plate-shaped member 100 so that the plate-shaped member 100 has a symmetrical shape with the plate-shaped member 200.
  • the first step is a step of forming a plurality of linear flow paths, which are linear flow paths along the longitudinal direction, on both of the pair of plate-shaped members 100 and 200, not one of them, by roll molding. It may be. Further, the second step may be a step of forming a connecting portion or the like by press working on both of the pair of plate-shaped members 100 and 200 instead of one.
  • the second embodiment will be described. In the following, the points different from the first embodiment will be mainly described, and the points common to the first embodiment will be omitted as appropriate.
  • FIG. 8 schematically shows the overall configuration of the heat exchanger 10 according to the present embodiment.
  • each of the pair of distribution units 12 is configured as a single tubular member.
  • the cooling unit 11 and the distribution unit 12 are connected by a tubular member 30.
  • the extending direction of the flow path formed inside the tubular member 30 is the direction along the longitudinal direction of the cooling unit 11, that is, the direction perpendicular to the extending direction of the distribution unit 12. ..
  • FIG. 9 shows a part of the plate-shaped members 200 among the pair of plate-shaped members 100 and 200 constituting the cooling unit 11. Although only the shape near the end on one side of the plate-shaped member 200 is shown in FIG. 9, the shape near the end on the other side of the plate-shaped member 200 is shown in FIG. The shape is symmetrical to the shape of the part.
  • the plate-shaped member 200 is formed through the same first step and second step as those described above. However, this embodiment is different from the first embodiment in the shape of the portion formed by the press working in the second step.
  • the press-processed portion of the plate-shaped member 200 is surrounded by the dotted line DL2 in FIG.
  • the recess 230 which is a folded portion and the recess 240 which is a connecting portion are formed by press working, but the "distributing portion 12 of the plate-shaped member 200" as in the first embodiment is not formed. ..
  • the alternate long and short dash line L1 shown in FIG. 9 is a linear groove formed in the plate-shaped member 200.
  • the groove is a groove having a minute depth formed when the press working is performed, and is similar to the groove shown by the alternate long and short dash line L1 in FIG.
  • the recess 240 is an end portion of the plate-shaped member 200 in the longitudinal direction, and is formed at a position that is an end portion of the flow path FP.
  • the recess 240 is a portion through which the tubular member 30 is inserted and joined.
  • the distribution unit 12 in the present embodiment is formed by joining a pair of plate-shaped members 100 (not shown) and 200 to each other, similarly to the cooling unit 11.
  • FIG. 10 shows a part of the plate-shaped members 200 among the pair of plate-shaped members 100 and 200 constituting the cooling unit 11.
  • the plate-shaped member 200 is also formed through the same first and second steps as those described above.
  • the plate-shaped member 200 is formed with a single recess 210 extending along the longitudinal direction thereof.
  • a plurality of recesses 250 are formed by pressing the plate-shaped member 200.
  • the press-processed portion of the plate-shaped member 200 is surrounded by the dotted line DL3 in FIG.
  • the recess 250 is a portion through which the tubular member 30 is inserted and joined.
  • a plurality of cooling portions 11 are connected to each other via a tubular member 30 and a distribution portion 12.
  • the entire tubular member 30 and the distribution unit 12 correspond to the "connecting member" in the present embodiment. Even with such a configuration, the same effect as that described in the first embodiment can be obtained.
  • the third embodiment will be described. In the following, the points different from the first embodiment will be mainly described, and the points common to the first embodiment will be omitted as appropriate.
  • FIG. 11 is a schematic view of a part of a cross section when the cooling unit 11 according to the present embodiment is cut in a plane perpendicular to the longitudinal direction thereof.
  • the portion with reference numeral 260 and the portion with reference numeral 270 are joined to the portion corresponding to the portion shaded in FIG. 4, that is, the plate-shaped member 100 of the plate-shaped member 200. This is the part.
  • the entire portion joined to the plate-shaped member 100 is not flat, but a part thereof protrudes toward the plate-shaped member 100.
  • reference numeral 270 is attached to such a protruding portion.
  • this part will also be referred to as "protruding portion 270".
  • the protrusion 270 is formed in a portion inside the portion joined to the plate-shaped member 100.
  • the periphery of the protrusion 270 is surrounded by a portion designated by reference numeral 260 in FIG.
  • reference numeral 600 is attached to the adhesive.
  • the adhesive around the protruding portion 270 is thickened.
  • the radius of curvature of the fillet 610 formed in the adhesive is increased, and as a result, the bonding strength by the adhesive is further increased.
  • the protrusion 270 can be formed in the entire range inside the shaded portion in FIG. Before joining the plate-shaped member 100 and the plate-shaped member 200, the adhesive may be applied in advance to a range of the plate-shaped member 200 that covers the entire protruding portion 270.
  • a protruding portion 270 is formed so as to project toward the other plate-shaped member 100.
  • a protruding portion 270 may be formed in each of the first step and the second step described above.

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Abstract

A heat exchanger (10) comprises: a plurality of cooling sections (11) that make contact with a storage battery (20) and that are sections for cooling the storage battery by means of fluid passing through an inner flow passage (FP); and a pair of distribution sections (12) that are connected to both ends of each of the cooling sections and that are sections for distributing the fluid to the cooling sections. Each of the cooling sections is formed by bonding a pair of plate members (100, 200) to each other. The heat exchanger (10) is configured by mutually connecting the cooling sections via connection members (30).

Description

熱交換器及びその製造方法Heat exchanger and its manufacturing method 関連出願の相互参照Cross-reference of related applications
　本出願は、2019年6月28日に出願された日本国特許出願2019-121078号に基づくものであって、その優先権の利益を主張するものであり、その特許出願の全ての内容が、参照により本明細書に組み込まれる。 This application is based on Japanese Patent Application No. 2019-121078 filed on June 28, 2019, claiming the benefit of its priority, and the entire contents of the patent application Incorporated herein by reference.
　本開示は、蓄電池を冷却するための熱交換器、及びその製造方法に関する。 The present disclosure relates to a heat exchanger for cooling a storage battery and a method for manufacturing the heat exchanger.
　例えば電動車両やハイブリッド車両のように、蓄電池から出力される電力によって走行する車両の普及が進んでいる。蓄電池においては、充放電に伴って熱が発生する。蓄電池の温度が上昇し過ぎると、蓄電池の劣化が進行し、その充放電性能が低下してしまう。そこで、上記のような車両には、蓄電池に加えて、蓄電池を冷却して適温に保つための熱交換器が備えられる。 Vehicles that run on electric power output from storage batteries, such as electric vehicles and hybrid vehicles, are becoming more widespread. In a storage battery, heat is generated as it is charged and discharged. If the temperature of the storage battery rises too much, the storage battery deteriorates and its charge / discharge performance deteriorates. Therefore, in addition to the storage battery, the vehicle as described above is provided with a heat exchanger for cooling the storage battery and keeping it at an appropriate temperature.
　下記特許文献１に記載された熱交換器は、熱交換ポーチの内部に、流体である熱搬送媒体の流れる流路が形成された構成となっている。冷却対象である蓄電池は、熱交換ポーチに当接した状態で配置される。蓄電池は、熱交換ポーチの内側を流れる熱搬送媒体により冷却される。 The heat exchanger described in Patent Document 1 below has a configuration in which a flow path through which a heat transfer medium, which is a fluid, flows is formed inside a heat exchange pouch. The storage battery to be cooled is arranged in contact with the heat exchange pouch. The storage battery is cooled by a heat transfer medium flowing inside the heat exchange pouch.
特表２０１６－５０６０３０号公報Special Table 2016-506030
　上記特許文献１に記載された熱交換器は、その全体が、一対の板状部材である箔壁を互いに接合して一体とすることにより構成されている。それぞれの箔壁は、金型を用いたプレス加工により形成されると考えられる。 The heat exchanger described in Patent Document 1 is configured by joining foil walls, which are a pair of plate-shaped members, to each other to form an integral body. It is considered that each foil wall is formed by press working using a die.
　車両に搭載される蓄電池の形状は統一されておらず、車種等によってさまざまな形状の蓄電池が用いられる。また、車両に搭載される蓄電池の数も、車両によって異なっている。熱交換器は、蓄電池の全体を冷却する必要があるので、蓄電池の形状や個数に応じて、その形状を適宜設計する必要がある。 The shape of the storage battery mounted on the vehicle is not unified, and various shapes of storage batteries are used depending on the vehicle type. In addition, the number of storage batteries mounted on the vehicle also differs depending on the vehicle. Since the heat exchanger needs to cool the entire storage battery, it is necessary to appropriately design the shape according to the shape and number of the storage batteries.
　このため、上記特許文献１に記載された熱交換器を採用した場合には、蓄電池の形状や個数に応じて複数種類の箔壁を製造し得るよう、箔壁の種類ごとに金型を用意しておく必要があると考えられる。車両に搭載される蓄電池の全体形状は比較的大きいため、箔壁の形状に合わせて、大きな金型を複数種類用意しておかなければならない。その結果、熱交換器の製造コストが上昇してしまう。 Therefore, when the heat exchanger described in Patent Document 1 is adopted, a mold is prepared for each type of foil wall so that a plurality of types of foil walls can be manufactured according to the shape and number of storage batteries. It is considered necessary to do so. Since the overall shape of the storage battery mounted on the vehicle is relatively large, it is necessary to prepare multiple types of large molds according to the shape of the foil wall. As a result, the manufacturing cost of the heat exchanger increases.
　本開示は、製造コストを抑制することのできる熱交換器、及びその製造方法を提供することを目的とする。 An object of the present disclosure is to provide a heat exchanger capable of suppressing a manufacturing cost and a manufacturing method thereof.
　本開示に係る熱交換器は、蓄電池を冷却するための熱交換器であって、蓄電池に当接し、内側の流路を通る流体により蓄電池を冷却する部分である複数の冷却部と、それぞれの冷却部の両端に接続され、冷却部に流体を分配するための部分である一対の分配部と、を備える。それぞれの冷却部は、一対の板状部材を互いに接合することにより形成されている。この熱交換器は、それぞれの冷却部を、連結部材を介して互いに連結することにより構成されている。 The heat exchanger according to the present disclosure is a heat exchanger for cooling the storage battery, and includes a plurality of cooling units, which are portions that come into contact with the storage battery and cool the storage battery by a fluid passing through an inner flow path. It is provided with a pair of distribution units connected to both ends of the cooling unit and which are portions for distributing fluid to the cooling unit. Each cooling portion is formed by joining a pair of plate-shaped members to each other. This heat exchanger is configured by connecting each cooling unit to each other via a connecting member.
　このような構成の熱交換器は、一対の板状部材からなる複数の冷却部を、連結部材を介して連結することにより構成されている。このため、熱交換器の全体をプレス加工により形成する必要は無く、そのための大型の金型を用意する必要も無い。尚、上記の分配部は、少なくともその一部が連結部材として構成されることとなる。 A heat exchanger having such a configuration is configured by connecting a plurality of cooling portions composed of a pair of plate-shaped members via a connecting member. Therefore, it is not necessary to form the entire heat exchanger by press working, and it is not necessary to prepare a large mold for that purpose. It should be noted that at least a part of the above-mentioned distribution unit is configured as a connecting member.
　本開示に係る熱交換器の製造方法は、上記構成の熱交換器を製造する方法であって、一対の板状部材のうちの少なくとも一方に、その長手方向に沿った直線状の流路である直線流路を、ロール成形により形成する第１工程と、第１工程において直線流路が形成された板状部材の、その長手方向に沿った端部にプレス加工を施すことにより、分配部に接続される部分である接続部を形成する第２工程と、一対の板状部材を互いに接合する第３工程と、を有する。 The method for manufacturing a heat exchanger according to the present disclosure is a method for manufacturing a heat exchanger having the above configuration, in which at least one of a pair of plate-shaped members has a linear flow path along the longitudinal direction thereof. The distribution unit is formed by pressing the ends of the plate-shaped member in which the linear flow path is formed in the first step and the first step in which the linear flow path is formed by roll forming, along the longitudinal direction thereof. It has a second step of forming a connecting portion which is a portion connected to the above, and a third step of joining a pair of plate-shaped members to each other.
　第１工程は、板状部材に、その長手方向に沿った直線状の流路である直線流路を、ロール成形により形成する工程である。第１工程において得られる板状部材の長さは、各冷却部の長手方向に沿って並べられる蓄電池の個数に合わせた長さとなるよう、容易に調整することができる。 The first step is a step of forming a linear flow path, which is a linear flow path along the longitudinal direction of the plate-shaped member, by roll molding. The length of the plate-shaped member obtained in the first step can be easily adjusted so as to be a length corresponding to the number of storage batteries arranged along the longitudinal direction of each cooling portion.
　第２工程は、第１工程において直線流路が形成された板状部材の、その長手方向に沿った端部にプレス加工を施すことにより、分配部に接続される部分である接続部を形成する工程である。プレス加工は、板状部材の全体ではなく端部にのみ施せばよいので、金型としては比較的小型のものを用いることができる。また、接続部の形状は、蓄電池の形状や個数によることなく共通の形状とすることができるので、用意しておくべき金型の種類が多くなり過ぎてしまうことがない。 In the second step, the end portion of the plate-shaped member in which the linear flow path is formed in the first step is pressed along the longitudinal direction to form a connecting portion which is a portion connected to the distribution portion. It is a process to do. Since the press working only needs to be applied to the end portion of the plate-shaped member, not the entire plate-shaped member, a relatively small die can be used. Further, since the shape of the connection portion can be a common shape regardless of the shape and the number of storage batteries, there are not too many types of molds to be prepared.
　第３工程は、一対の板状部材を互いに接合し、これにより冷却部を形成する工程である。第３工程の後、もしくは第３工程と同時に、複数の冷却部を、連結部材を介して互いに接合して連結すれば、上記構成の熱交換器を得ることができる。 The third step is a step of joining a pair of plate-shaped members to each other to form a cooling portion. After the third step or at the same time as the third step, if a plurality of cooling portions are joined to each other via a connecting member and connected, the heat exchanger having the above configuration can be obtained.
　本開示によれば、製造コストを抑制することのできる熱交換器、及びその製造方法が提供される。 According to the present disclosure, a heat exchanger capable of suppressing the manufacturing cost and a manufacturing method thereof are provided.
図１は、第１実施形態に係る熱交換器の全体構成を示す図である。FIG. 1 is a diagram showing an overall configuration of a heat exchanger according to the first embodiment. 図２は、熱交換器に蓄電池が設置された状態を模式的に示す図である。FIG. 2 is a diagram schematically showing a state in which a storage battery is installed in the heat exchanger. 図３は、熱交換器の一部を構成する一対の板状部材を示す図である。FIG. 3 is a diagram showing a pair of plate-shaped members forming a part of the heat exchanger. 図４は、一対の板状部材のうちの一方の形状を示す図である。FIG. 4 is a diagram showing the shape of one of the pair of plate-shaped members. 図５は、熱交換器の製造方法を説明するための図である。FIG. 5 is a diagram for explaining a method of manufacturing a heat exchanger. 図６は、第１工程が終了した時点における板状部材の形状を示す図である。FIG. 6 is a diagram showing the shape of the plate-shaped member at the time when the first step is completed. 図７は、熱交換器の製造方法を説明するための図である。FIG. 7 is a diagram for explaining a method of manufacturing a heat exchanger. 図８は、第２実施形態に係る熱交換器の全体構成を模式的に示す図である。FIG. 8 is a diagram schematically showing the overall configuration of the heat exchanger according to the second embodiment. 図９は、第２実施形態に係る熱交換器の一部を構成する、板状部材の形状を示す図である。FIG. 9 is a diagram showing the shape of a plate-shaped member constituting a part of the heat exchanger according to the second embodiment. 図１０は、第２実施形態に係る熱交換器の一部を構成する、板状部材の形状を示す図である。FIG. 10 is a diagram showing the shape of a plate-shaped member constituting a part of the heat exchanger according to the second embodiment. 図１１は、第３実施形態に係る熱交換器の構成を説明するための図である。FIG. 11 is a diagram for explaining the configuration of the heat exchanger according to the third embodiment.
　以下、添付図面を参照しながら本実施形態について説明する。説明の理解を容易にするため、各図面において同一の構成要素に対しては可能な限り同一の符号を付して、重複する説明は省略する。 Hereinafter, the present embodiment will be described with reference to the attached drawings. In order to facilitate understanding of the description, the same components are designated by the same reference numerals as much as possible in each drawing, and duplicate description is omitted.
　第１実施形態について説明する。本実施形態に係る熱交換器１０は、不図示の電動車両に対し蓄電池２０と共に搭載される装置であって、蓄電池２０を冷却してその温度を適温に保つための装置として構成されている。図１を参照しながら、熱交換器１０の構成について説明する。同図に示されるように、熱交換器１０は、冷却部１１と分配部１２とを備えている。 The first embodiment will be described. The heat exchanger 10 according to the present embodiment is a device mounted together with the storage battery 20 in an electric vehicle (not shown), and is configured as a device for cooling the storage battery 20 and keeping the temperature at an appropriate temperature. The configuration of the heat exchanger 10 will be described with reference to FIG. As shown in the figure, the heat exchanger 10 includes a cooling unit 11 and a distribution unit 12.
　冷却部１１は、蓄電池２０に当接して蓄電池２０を冷却する部分である。冷却部１１は、直線状に伸びる管状の部材として構成されており、その内側には、流体の流れる流路ＦＰが形成されている。尚、流路ＦＰの具体的な配置については、図４を参照しながら後に説明する。 The cooling unit 11 is a portion that comes into contact with the storage battery 20 to cool the storage battery 20. The cooling unit 11 is configured as a tubular member extending linearly, and a flow path FP through which a fluid flows is formed inside the cooling unit 11. The specific arrangement of the flow path FP will be described later with reference to FIG.
　冷却部１１は、上面視において略長方形となっている。冷却部１１は複数設けられており、それぞれの長手方向に対し垂直な方向に沿って並んでいる。それぞれの冷却部１１は、互いに平行となっており、その両端が分配部１２に接続されている。 The cooling unit 11 has a substantially rectangular shape when viewed from above. A plurality of cooling units 11 are provided, and are arranged along a direction perpendicular to the longitudinal direction of each. Each cooling unit 11 is parallel to each other, and both ends thereof are connected to the distribution unit 12.
　熱交換器１０が電動車両に搭載されているときには、図２に示されるように、冷却部１１の上面に複数の蓄電池２０が配置される。つまり、それぞれの蓄電池２０の下端に対し、冷却部１１の上面が当接した状態とされる。この状態で、冷却部１１の流路ＦＰには低温の流体が流される。これにより、それぞれの蓄電池２０は、流路ＦＰを流れる流体によって冷却され、その温度を低下させる。上記の流体としては、本実施形態ではＬＬＣが用いられるのであるが、他の流体が用いられてもよい。このように、本実施形態に係る冷却部１１は、蓄電池２０に当接し、内側の流路ＦＰを通る流体により蓄電池２０を冷却する部分として構成されている。 When the heat exchanger 10 is mounted on the electric vehicle, a plurality of storage batteries 20 are arranged on the upper surface of the cooling unit 11 as shown in FIG. That is, the upper surface of the cooling unit 11 is in contact with the lower end of each storage battery 20. In this state, a low-temperature fluid is flowed through the flow path FP of the cooling unit 11. As a result, each storage battery 20 is cooled by the fluid flowing through the flow path FP, and its temperature is lowered. As the above fluid, LLC is used in this embodiment, but other fluids may be used. As described above, the cooling unit 11 according to the present embodiment is configured as a portion that comes into contact with the storage battery 20 and cools the storage battery 20 by the fluid passing through the inner flow path FP.
　複数の冷却部１１のうち、図１における左側の端部となる位置に配置された冷却部１１には、入口部１３と出口部１４とが設けられている。入口部１３は、外部から供給される流体を受け入れるための部分である。出口部１４は、冷却部１１を通り熱交換に供された後の流体を、外部へと排出するための部分である。入口部１３及び出口部１４は、冷却部１１の長手方向に沿った略中央となる位置において、当該長手方向に沿って並ぶように配置されている。図示は省略しているが、入口部１３と出口部１４との間となる位置においては、冷却部１１の内部において流路ＦＰが互いに分離されている。これにより、入口部１３から流入した流体が、熱交換に供されることなくそのまま出口部１４から排出されてしまうようなことが防止されている。図１においては、熱交換器１０において流体の流れる経路が複数の矢印によって示されている。 Of the plurality of cooling units 11, the cooling unit 11 arranged at the position at the left end in FIG. 1 is provided with an inlet portion 13 and an outlet portion 14. The inlet portion 13 is a portion for receiving a fluid supplied from the outside. The outlet portion 14 is a portion for discharging the fluid after being subjected to heat exchange through the cooling portion 11 to the outside. The inlet portion 13 and the outlet portion 14 are arranged so as to be lined up along the longitudinal direction at a position substantially centered along the longitudinal direction of the cooling portion 11. Although not shown, the flow paths FPs are separated from each other inside the cooling unit 11 at a position between the inlet portion 13 and the outlet portion 14. As a result, it is prevented that the fluid flowing in from the inlet portion 13 is discharged from the outlet portion 14 as it is without being subjected to heat exchange. In FIG. 1, the flow path of the fluid in the heat exchanger 10 is indicated by a plurality of arrows.
　分配部１２は、それぞれの冷却部１１に流体を分配するための、一対の管状の部分である。それぞれの分配部１２は、その長手方向が、冷却部１１の長手方向に対して垂直となるように配置されている。一方の分配部１２は、それぞれの冷却部１１の一端に接続されており、他方の分配部１２は、それぞれの冷却部１１の他端に接続されている。流体は、一方の分配部１２からそれぞれの冷却部１１へと供給された後、流路ＦＰを通って、他方の分配部１２へと流入する。これにより、図１において矢印で示されるような流体の流れが実現される。 The distribution unit 12 is a pair of tubular portions for distributing the fluid to each cooling unit 11. Each distribution unit 12 is arranged so that its longitudinal direction is perpendicular to the longitudinal direction of the cooling unit 11. One distribution unit 12 is connected to one end of each cooling unit 11, and the other distribution unit 12 is connected to the other end of each cooling unit 11. The fluid is supplied from one distribution unit 12 to each cooling unit 11 and then flows into the other distribution unit 12 through the flow path FP. As a result, the flow of the fluid as shown by the arrow in FIG. 1 is realized.
　尚、本実施形態においては、冷却部１１と、分配部１２のうち当該冷却部の両端部に接続されている部分とが、図３に示される一対の板状部材１００、２００を接合することにより、その全体が一体となるように構成されている。つまり、それぞれの板状部材１００、２００に、分配部１２の一部と冷却部１１とが一体に形成されている。 In the present embodiment, the cooling unit 11 and the portions of the distribution unit 12 connected to both ends of the cooling unit join the pair of plate-shaped members 100 and 200 shown in FIG. Therefore, the whole is configured to be one. That is, a part of the distribution unit 12 and the cooling unit 11 are integrally formed on the plate-shaped members 100 and 200, respectively.
　熱交換器１０では、互いに接合された板状部材１００、２００が、複数の管状部材３０を介して互いに連結されている。管状部材３０は、扁平な断面を有する管状の部材であって、その内側には不図示の流路が形成されている。図１に示されるように、それぞれの管状部材３０は、板状部材１００、２００の長手方向に沿った両端部に接続されており、互いに隣り合う板状部材１００、２００の間を繋いでいる。管状部材３０の内側に形成された流路の伸びる方向は、冷却部１１の長手方向に対して垂直な方向、すなわち、分配部１２の伸びる方向となっている。 In the heat exchanger 10, the plate-shaped members 100 and 200 joined to each other are connected to each other via a plurality of tubular members 30. The tubular member 30 is a tubular member having a flat cross section, and a flow path (not shown) is formed inside the tubular member 30. As shown in FIG. 1, each of the tubular members 30 is connected to both ends of the plate-shaped members 100 and 200 along the longitudinal direction, and connects between the plate-shaped members 100 and 200 adjacent to each other. .. The extending direction of the flow path formed inside the tubular member 30 is the direction perpendicular to the longitudinal direction of the cooling portion 11, that is, the extending direction of the distribution portion 12.
　本実施形態においては、板状部材１００、２００の長手方向に沿った端部と、管状部材３０と、が交互に並ぶように配置されて互いに連結されており、このように連結された全体が、上記の分配部１２となっている。 In the present embodiment, the end portions of the plate-shaped members 100 and 200 along the longitudinal direction and the tubular members 30 are arranged so as to be alternately arranged and connected to each other, and the whole connected in this way is , The above-mentioned distribution unit 12.
　以上のように、本実施形態では、それぞれの冷却部１１が、一対の板状部材１００、２００を互いに接合することにより形成されている。また、熱交換器１０は、それぞれの冷却部１１を互いに連結することにより構成されている。冷却部１１の連結は、管状部材３０を介して行われている。このような管状部材３０は、本実施形態における「連結部材」に該当する。 As described above, in the present embodiment, the respective cooling portions 11 are formed by joining the pair of plate-shaped members 100 and 200 to each other. Further, the heat exchanger 10 is configured by connecting the cooling units 11 to each other. The cooling unit 11 is connected via the tubular member 30. Such a tubular member 30 corresponds to the "connecting member" in the present embodiment.
　板状部材１００、２００の構成について、図３及び図４を参照しながら説明する。図３に示されるように、板状部材１００及び板状部材２００は、いずれも矩形の部材であって、上面視におけるそれぞれの形状が互いに略同一となっている。つまり、一対の板状部材１００、２００を互いに接合する方向に沿って見た場合においては、それぞれの板状部材１００、２００の外形（上記の「矩形」）が互いに同一となっている。板状部材１００は、その全体が平坦となっている。一方、板状部材２００は、その表面に凹部が形成されており、これにより、板状部材１００との間に流路ＦＰ等が形成されている。板状部材１００及び板状部材２００は、上下方向に沿って互いに重ねられ、接着剤によって互いに接続され一体となっている。接着剤としては、例えばシリコーン接着剤、エポキシ接着剤、ポリウレタン接着剤等を用いることができる。接着剤による接合に替えて、例えばろう接、レーザー溶接、抵抗溶接等のような溶接による接合が行われてもよい。本実施形態では、板状部材１００の方が上方側となるように配置される。このため、板状部材１００の上面は、図２のように蓄電池２０が当接する部分となっている。 The configurations of the plate-shaped members 100 and 200 will be described with reference to FIGS. 3 and 4. As shown in FIG. 3, the plate-shaped member 100 and the plate-shaped member 200 are both rectangular members, and their respective shapes in the top view are substantially the same. That is, when the pair of plate-shaped members 100 and 200 are viewed along the direction in which they are joined to each other, the outer shapes (the above-mentioned "rectangle") of the plate-shaped members 100 and 200 are the same as each other. The plate-shaped member 100 is flat as a whole. On the other hand, the plate-shaped member 200 has a recess formed on its surface, whereby a flow path FP or the like is formed between the plate-shaped member 200 and the plate-shaped member 100. The plate-shaped member 100 and the plate-shaped member 200 are overlapped with each other in the vertical direction, and are connected to each other by an adhesive to be integrated. As the adhesive, for example, a silicone adhesive, an epoxy adhesive, a polyurethane adhesive, or the like can be used. Instead of joining with an adhesive, joining by welding such as brazing, laser welding, resistance welding and the like may be performed. In the present embodiment, the plate-shaped member 100 is arranged so as to be on the upper side. Therefore, the upper surface of the plate-shaped member 100 is a portion that the storage battery 20 comes into contact with, as shown in FIG.
　図４は、板状部材２００を上方側、すなわち、板状部材１００が接合される方から見て模式的に描いたものである。板状部材２００には、後に説明するロール成形やプレス加工により、図４において紙面奥側、すなわち板状部材１００とは反対側に向けて後退する凹部が形成されている。図４においては、板状部材２００のうち凹部以外の部分、すなわち板状部材１００に当接し接合される部分に、斜線が付してある。 FIG. 4 is a schematic view of the plate-shaped member 200 viewed from the upper side, that is, the side to which the plate-shaped member 100 is joined. The plate-shaped member 200 is formed with a recess that retracts toward the back side of the paper surface, that is, the side opposite to the plate-shaped member 100 in FIG. 4 by roll forming or press working described later. In FIG. 4, a portion of the plate-shaped member 200 other than the recess, that is, a portion that abuts and is joined to the plate-shaped member 100 is shaded.
　板状部材２００のうち、その長手方向に沿った両端部、具体的には管状部材３０により連結される部分は、先に述べたように、管状部材３０と共に分配部１２の一部となっている。当該部分のことを、以下では「板状部材２００の分配部１２」とも表記する。また、板状部材２００のうち、一対の「板状部材２００の分配部１２」の間の部分は、先に述べたように冷却部１１となっている。当該部分のことを、以下では「板状部材２００の冷却部１１」とも表記する。 Of the plate-shaped member 200, both ends along the longitudinal direction thereof, specifically, portions connected by the tubular member 30 become a part of the distribution portion 12 together with the tubular member 30 as described above. There is. In the following, this portion will also be referred to as “distributor 12 of plate-shaped member 200”. Further, in the plate-shaped member 200, the portion between the pair of "distributing portions 12 of the plate-shaped member 200" is the cooling portion 11 as described above. Hereinafter, this portion will also be referred to as “cooling portion 11 of the plate-shaped member 200”.
　板状部材２００の分配部１２では、板状部材２００を凹状に後退させることにより凹部２１０が形成されている。凹部２１０は、分配部１２において流体が流れるための流路となっている。分配部１２の流路方向、すなわち板状部材２００の短手方向に沿って、凹部２１０の両側において隣り合う位置には、板状部材２００を凹状に後退させることにより凹部２１１が形成されている。凹部２１１における後退量は、凹部２１０における後退量よりも大きい。凹部２１１は、その内側に管状部材３０が挿通され接合される部分となっている。 In the distribution portion 12 of the plate-shaped member 200, a recess 210 is formed by retracting the plate-shaped member 200 in a concave shape. The recess 210 is a flow path for the fluid to flow in the distribution section 12. Recesses 211 are formed by retracting the plate-shaped member 200 in a concave shape at positions adjacent to each other on both sides of the recess 210 along the flow path direction of the distribution portion 12, that is, the lateral direction of the plate-shaped member 200. .. The amount of retreat in the recess 211 is larger than the amount of retreat in the recess 210. The recess 211 is a portion through which the tubular member 30 is inserted and joined.
　一端側に形成された板状部材２００の分配部１２と、他端側に形成された板状部材２００の分配部１２とは、互いに対称な形状となっている。両者の間には、上記のように板状部材２００の冷却部１１が形成されている。 The distribution portion 12 of the plate-shaped member 200 formed on one end side and the distribution portion 12 of the plate-shaped member 200 formed on the other end side have symmetrical shapes. A cooling portion 11 of the plate-shaped member 200 is formed between the two as described above.
　板状部材２００の冷却部１１では、板状部材２００を凹状に後退させることにより凹部２２０及び凹部２３０が形成されている。凹部２２０は、板状部材２００の長手方向に沿って直線状に伸びるように形成されており、板状部材２００の短手方向に沿って３本並ぶように形成されている。 In the cooling portion 11 of the plate-shaped member 200, the recess 220 and the recess 230 are formed by retracting the plate-shaped member 200 in a concave shape. The recesses 220 are formed so as to extend linearly along the longitudinal direction of the plate-shaped member 200, and are formed so as to line up three recesses along the lateral direction of the plate-shaped member 200.
　凹部２３０は、３本の凹部２２０が繋がって１本の流路となるように、互いに隣り合う凹部２２０の端部同士を繋ぐように形成されている。これにより、凹部２２０及び凹部２３０は、その全体が１本の流路となっており、当該流路が先に述べた流路ＦＰとなっている。このような構成により、冷却部１１においては、板状部材２００の長手方向に沿って、流体が一往復半する経路で流れることとなる。凹部２３０は、それぞれの凹部２２０を繋いで一本の流路とする「折り返し部」に該当する。 The recess 230 is formed so as to connect the ends of the recesses 220 adjacent to each other so that the three recesses 220 are connected to form one flow path. As a result, the recess 220 and the recess 230 are all one flow path, and the flow path is the flow path FP described above. With such a configuration, in the cooling unit 11, the fluid flows in a path of one reciprocating and a half along the longitudinal direction of the plate-shaped member 200. The recess 230 corresponds to a "folded portion" that connects the recesses 220 to form a single flow path.
　板状部材２００の分配部１２と、板状部材２００の冷却部１１との間となる位置には、板状部材２００を凹状に後退させることにより凹部２４０が形成されている。凹部２４０は、流路ＦＰと凹部２１０との間を繋いでいる。このような凹部２４０は、冷却部１１のうち、分配部１２に接続される部分ということができる。つまり、凹部２４０は本実施形態における「接続部」に該当する。接続部である凹部２４０は、流路ＦＰの両端となる位置にそれぞれ形成されている。流体は、一方側の分配部１２から、凹部２４０を通って流路ＦＰに流入する。当該流体は、流路ＦＰを通った後、凹部２４０を通って他方側の分配部１２へと流出する。 A recess 240 is formed at a position between the distribution portion 12 of the plate-shaped member 200 and the cooling portion 11 of the plate-shaped member 200 by retracting the plate-shaped member 200 in a concave shape. The recess 240 connects the flow path FP and the recess 210. Such a recess 240 can be said to be a portion of the cooling unit 11 connected to the distribution unit 12. That is, the recess 240 corresponds to the "connection portion" in the present embodiment. The recesses 240, which are the connecting portions, are formed at positions at both ends of the flow path FP. The fluid flows into the flow path FP from the distribution portion 12 on one side through the recess 240. After passing through the flow path FP, the fluid flows out to the distribution section 12 on the other side through the recess 240.
　熱交換器１０を製造する方法について説明する。図５には、板状部材２００を形成するための工程の一部が模式的に示されている。図５において符号３１０が付されているのは、板状部材２００の材料である金属板をロール状に丸めてあるコイル材である。以下では、当該コイル材のことを「コイル材３１０」とも表記する。金属板としては、例えばアルミニウム、銅、鉄等を用いることができる。 The method of manufacturing the heat exchanger 10 will be described. FIG. 5 schematically shows a part of the steps for forming the plate-shaped member 200. In FIG. 5, reference numeral 310 is a coil material obtained by rolling a metal plate, which is a material of the plate-shaped member 200, into a roll shape. Hereinafter, the coil material is also referred to as “coil material 310”. As the metal plate, for example, aluminum, copper, iron or the like can be used.
　コイル材３１０は、不図示の送り出し装置に取り付けられ、その中心軸周りにおいて図５の矢印で示される方向に回転する。これにより、コイル材３１０から、平坦な板状部材３１１が一定の速度で送り出される。板状部材３１１は、最終的には板状部材２００となる部材である。 The coil material 310 is attached to a feeding device (not shown) and rotates around its central axis in the direction indicated by the arrow in FIG. As a result, the flat plate-shaped member 311 is sent out from the coil material 310 at a constant speed. The plate-shaped member 311 is a member that finally becomes the plate-shaped member 200.
　図５において符号３２０が付されているのは、ロール成形機に設けられた一対のローラーである。以下では、これらのローラーを「ローラー３２０」とも表記する。それぞれのローラー３２０の外周面には、互いに対向する不図示の凹凸が形成されている。上記の板状部材３１１は、ローラー３２０に挟み込まれて所謂ロール成形が行われることにより変形し、その長手方向に沿って直線状の凹部が複数形成された板状部材３１２となる。その後、板状部材３１２は、切断機３３０によって所定の長さとなるように切断され、板状部材３１３となる。 In FIG. 5, reference numeral 320 is a pair of rollers provided in the roll forming machine. Hereinafter, these rollers are also referred to as "roller 320". On the outer peripheral surface of each roller 320, irregularities (not shown) facing each other are formed. The plate-shaped member 311 is deformed by being sandwiched between rollers 320 and performing so-called roll forming, and becomes a plate-shaped member 312 in which a plurality of linear recesses are formed along the longitudinal direction thereof. After that, the plate-shaped member 312 is cut to a predetermined length by the cutting machine 330 to become the plate-shaped member 313.
　図６には、上記のように成形された板状部材３１３が、図４と同じ視点で描かれている。図６においては、ロール成形によって凹状に後退した部分を除く部分に、斜線が付されている。斜線が付されていない部分は、板状部材３１３の長手方向に沿って伸びる直線状の凹部２２０となっている。凹部２２０は、板状部材３１３の長手方向の一端から他端まで伸びるように形成されている。凹部２２０は、板状部材３１３の短手方向に沿って３本並ぶように形成されている。それぞれの凹部２２０は、図４に示される凹部２２０の元となるものであり、最終的には流路ＦＰとなるものである。このような凹部２２０は、本実施形態における「直線流路」に該当する。 In FIG. 6, the plate-shaped member 313 formed as described above is drawn from the same viewpoint as in FIG. In FIG. 6, diagonal lines are provided on the portions excluding the concavely retracted portion due to roll molding. The portion not shaded is a linear recess 220 extending along the longitudinal direction of the plate-shaped member 313. The recess 220 is formed so as to extend from one end to the other end of the plate-shaped member 313 in the longitudinal direction. Three recesses 220 are formed so as to be lined up along the lateral direction of the plate-shaped member 313. Each recess 220 is the source of the recess 220 shown in FIG. 4, and finally becomes the flow path FP. Such a recess 220 corresponds to the "straight flow path" in the present embodiment.
　以上に説明した工程、すなわち板状部材３１３が形成されるまでの工程は、冷却部１１を形成するための一対の部材、のうちの一方である板状部材２００に、その長手方向に沿った直線状の流路である直線流路を、ロール成形により形成する工程となっている。当該工程は、本実施形態における「第１工程」に該当する。図６は、第１工程が終了した時点における板状部材３１３の形状を示すものである。 The process described above, that is, the process until the plate-shaped member 313 is formed, is formed along the longitudinal direction of the plate-shaped member 200, which is one of the pair of members for forming the cooling portion 11. This is a step of forming a linear flow path, which is a linear flow path, by roll molding. The step corresponds to the "first step" in the present embodiment. FIG. 6 shows the shape of the plate-shaped member 313 at the time when the first step is completed.
　尚、第１工程においては、図３に示される板状部材１００も別途形成される。板状部材１００を形成する方法は、図５に示されるローラー３２０を用いることなく、以上に説明したものと同様の工程を経ることにより形成することができる。 In the first step, the plate-shaped member 100 shown in FIG. 3 is also separately formed. The method for forming the plate-shaped member 100 can be formed by going through the same steps as those described above without using the roller 320 shown in FIG.
　図７には、板状部材２００を形成するための工程であって、上記の第１工程に続いて行われる工程が模式的に示されている。当該工程においては、板状部材３１３の長手方向に沿った両端部に、プレス加工が施される。図７において符号３４０が付されているのは、プレス機において板状部材３１３を直接挟み込む一対の金型である。以下では、当該金型のことを「金型３４０」とも表記する。 FIG. 7 schematically shows a step for forming the plate-shaped member 200, which is performed following the first step. In this step, both ends of the plate-shaped member 313 along the longitudinal direction are pressed. In FIG. 7, reference numeral 340 is a pair of dies that directly sandwich the plate-shaped member 313 in the press machine. Hereinafter, the mold is also referred to as "mold 340".
　板状部材３１３のうち、金型３４０に挟み込まれてプレス加工が施される部分は、図６において点線ＤＬ１で囲まれている部分である。また、図４においては、板状部材２００のうちプレス加工が施された部分が同じく点線ＤＬ１で囲まれている。つまり、図６に示される板状部材３１３のうち点線ＤＬ１で囲まれている部分は、プレス加工が施されることにより塑性変形し、図４に示される板状部材２００のうち点線ＤＬ１で囲まれている部分となる。図６及び図４を対比すると明らかなように、上記プレス加工によって、接続部である凹部２４０や、接続部を介して冷却部１１に繋がる分配部１２、及び折り返し部である凹部２３０が、板状部材２００に同時に形成されている。 Of the plate-shaped member 313, the portion sandwiched between the dies 340 and pressed is the portion surrounded by the dotted line DL1 in FIG. Further, in FIG. 4, the portion of the plate-shaped member 200 that has been pressed is also surrounded by the dotted line DL1. That is, the portion of the plate-shaped member 313 shown in FIG. 6 surrounded by the dotted line DL1 is plastically deformed by being pressed, and is surrounded by the dotted line DL1 of the plate-shaped member 200 shown in FIG. It becomes the part that is. As is clear from the comparison with FIGS. 6 and 4, the recess 240 which is the connecting portion, the distribution portion 12 which is connected to the cooling portion 11 via the connecting portion, and the recess 230 which is the folded portion are formed by the press working. It is formed on the shape member 200 at the same time.
　このように、板状部材３１３にプレス加工を施すことによって、図４の板状部材２００を形成する工程は、第１工程に続いて行われる工程であって、本実施形態における「第２工程」に該当する。 As described above, the step of forming the plate-shaped member 200 of FIG. 4 by pressing the plate-shaped member 313 is a step performed following the first step, and is the "second step" in the present embodiment. It corresponds to.
　第２工程は、上記のように、第１工程において直線流路である凹部２２０が形成された板状部材３１３の、その長手方向に沿った端部にプレス加工を施すことにより、分配部１２に接続される部分である接続部を形成する工程となっている。 In the second step, as described above, the distribution section 12 is formed by pressing the end portion of the plate-shaped member 313 in which the recess 220, which is a linear flow path, is formed in the first step along the longitudinal direction thereof. It is a process of forming a connecting portion which is a portion connected to.
　第１工程においては、冷却部１１を形成するための一対の部材、のうちの一方である板状部材２００に、直線流路である凹部２２０が３本形成される。続く第２工程においては、それぞれの凹部２２０を繋いで一本の流路とする折り返し部、すなわち凹部２３０が、上記の凹部２４０等と共に形成される。更に、第２工程においては、板状部材２００に分配部１２の一部、すなわち、図１に示される分配部１２のうち管状部材３０を除く部分も同時に形成される。 In the first step, three recesses 220, which are linear flow paths, are formed in the plate-shaped member 200, which is one of the pair of members for forming the cooling portion 11. In the subsequent second step, a folded portion, that is, a recess 230, which connects the recesses 220 to form a single flow path, is formed together with the recess 240 and the like. Further, in the second step, a part of the distribution portion 12, that is, a portion of the distribution portion 12 shown in FIG. 1 excluding the tubular member 30 is also formed at the same time on the plate-shaped member 200.
　第２工程が完了した後は、板状部材１００と板状部材２００とを図３に示されるように重ね合わせて、接着剤によって互いに接合する。これにより、冷却部１１が形成される。冷却部１１である接合体を、複数の管状部材３０により連結し、接着剤により接合すれば、図１に示される熱交換器１０が得られる。このような接合の工程は、第２工程に続いて行われる工程であって、本実施形態における「第３工程」に該当する。尚、第３工程においては、板状部材１００と板状部材２００との接合による冷却部１１の形成、及び、管状部材３０との接着による冷却部１１の連結が、同時に行われることが好ましい。第３工程における各部材の接合は、本実施形態のように接着剤による接着であってもよいが、ろう材を用いたろう接であってもよい。 After the second step is completed, the plate-shaped member 100 and the plate-shaped member 200 are overlapped as shown in FIG. 3 and joined to each other with an adhesive. As a result, the cooling unit 11 is formed. The heat exchanger 10 shown in FIG. 1 can be obtained by connecting the joined bodies, which are the cooling portions 11, with a plurality of tubular members 30 and joining them with an adhesive. Such a joining step is a step performed following the second step, and corresponds to the "third step" in the present embodiment. In the third step, it is preferable that the cooling portion 11 is formed by joining the plate-shaped member 100 and the plate-shaped member 200, and the cooling portion 11 is connected by adhering to the tubular member 30 at the same time. The joining of each member in the third step may be bonding with an adhesive as in the present embodiment, or may be brazing with a brazing material.
　第２工程が完了し、第３工程が行われる直前の状態においては、互いに接合される一対の板状部材１００、２００は、これらを接合する方向に沿って見た場合におけるそれぞれの外形が互いに同一となっている。 In the state immediately before the second step is completed and the third step is performed, the pair of plate-shaped members 100 and 200 to be joined to each other have their respective outer shapes when viewed along the direction in which they are joined. It is the same.
　尚、図１において最も左側に配置されている冷却部１１は、上記のような第２工程とは異なる工程を経て製造される。先に述べたように、入口部１３と出口部１４との間となる位置においては、冷却部１１の内部において流路ＦＰが互いに分離されている。このような流路ＦＰを形成するために、入口部１３及び出口部１４の近傍部分には、別途プレス加工が施される必要がある。また、当該冷却部１１を構成する板状部材１００、２００に対し、入口部１３及び出口部１４を形成するための工程も別途実行される。 The cooling unit 11 arranged on the leftmost side in FIG. 1 is manufactured through a process different from the second process as described above. As described above, at the position between the inlet portion 13 and the outlet portion 14, the flow path FPs are separated from each other inside the cooling portion 11. In order to form such a flow path FP, it is necessary to separately press the portions in the vicinity of the inlet portion 13 and the outlet portion 14. Further, a step for forming the inlet portion 13 and the outlet portion 14 with respect to the plate-shaped members 100 and 200 constituting the cooling portion 11 is also separately executed.
　以上のような製法によって得られる熱交換器１０の利点について説明する。一般に、車両に搭載される蓄電池２０の形状は統一されておらず、車種等によってさまざまな形状の蓄電池２０が用いられる。また、車両に搭載される蓄電池２０の数も、車両によって異なっている。熱交換器１０は、複数の蓄電池２０の全体を冷却する必要があるので、蓄電池２０の形状や個数に応じて、その形状を適宜設計する必要がある。 The advantages of the heat exchanger 10 obtained by the above manufacturing method will be described. Generally, the shape of the storage battery 20 mounted on the vehicle is not unified, and the storage battery 20 having various shapes is used depending on the vehicle type and the like. Further, the number of storage batteries 20 mounted on the vehicle also differs depending on the vehicle. Since the heat exchanger 10 needs to cool the entire plurality of storage batteries 20, it is necessary to appropriately design the shape according to the shape and the number of the storage batteries 20.
　例えば、一本の冷却部１１上に並べられる蓄電池２０の個数が多い場合や、冷却部１１の長手方向に沿った蓄電池２０の寸法が大きい場合には、冷却部１１を長めに形成する必要がある。本実施形態では、冷却部１１を構成する板状部材１００、２００が、図５を参照しながら説明したようにロール成形によって形成されるので、冷却部１１の長手方向に沿った長さを容易に調整することができる。 For example, when the number of storage batteries 20 arranged on one cooling unit 11 is large, or when the size of the storage batteries 20 along the longitudinal direction of the cooling unit 11 is large, it is necessary to form the cooling unit 11 longer. is there. In the present embodiment, since the plate-shaped members 100 and 200 constituting the cooling unit 11 are formed by roll molding as described with reference to FIG. 5, the length of the cooling unit 11 along the longitudinal direction can be easily increased. Can be adjusted to.
　また、熱交換器１０は、複数の冷却部１１を、連結部材である管状部材３０により連結した構成となっているので、冷却部１１の数を増加または減少させることも容易に行うことができる。 Further, since the heat exchanger 10 has a configuration in which a plurality of cooling units 11 are connected by a tubular member 30 which is a connecting member, the number of cooling units 11 can be easily increased or decreased. ..
　冷却部１１の長さや数を変化させた場合であっても、プレス加工が施される部分の形状を変化させる必要はない。このため、当該部分の形状を統一しておくことで、単一の金型３４０により様々な形状の熱交換器１０を製造することができる。また、金型３４０によるプレス加工は、熱交換器１０の全体を一度に形成するようには行われず、板状部材２００の一部のみに対して行われる。このため、大型の金型を用意する必要もない。 Even when the length and number of the cooling portions 11 are changed, it is not necessary to change the shape of the portion to be pressed. Therefore, by unifying the shape of the portion, it is possible to manufacture the heat exchanger 10 having various shapes by using a single mold 340. Further, the press working by the die 340 is not performed so as to form the entire heat exchanger 10 at once, but is performed only on a part of the plate-shaped member 200. Therefore, it is not necessary to prepare a large mold.
　このように、本実施形態に係る熱交換器１０は、蓄電池２０の個数や形状に合わせて容易にその形状を変化させることができる。また、大型の金型を複数種類用意する必要が無く、小型の金型３４０により形成することができるので、その製造コストを従来に比べて大幅に抑制することができる。 As described above, the shape of the heat exchanger 10 according to the present embodiment can be easily changed according to the number and shape of the storage batteries 20. Further, since it is not necessary to prepare a plurality of types of large dies and the dies can be formed by the small dies 340, the manufacturing cost thereof can be significantly suppressed as compared with the conventional case.
　図４に示される一点鎖線Ｌ１は、板状部材２００のうち、分配部１２の一部が形成されている部分に形成された直線状の溝である。当該溝は、図６に示される板状部材３１３にプレス加工を施した際に、凹部２２０の角部分が変形した結果として形成された微小深さの溝である。これらの溝は、図４において斜線が付されている部分、すなわち、板状部材１００に接合される部分に亘るように形成されている。接着剤との接触面積が上記の溝によって増加するので、板状部材１００と板状部材２００との間における接合強度が高められている。 The alternate long and short dash line L1 shown in FIG. 4 is a linear groove formed in a portion of the plate-shaped member 200 in which a part of the distribution portion 12 is formed. The groove is a groove having a minute depth formed as a result of deformation of a corner portion of the recess 220 when the plate-shaped member 313 shown in FIG. 6 is pressed. These grooves are formed so as to extend to the portion shaded in FIG. 4, that is, the portion joined to the plate-shaped member 100. Since the contact area with the adhesive is increased by the groove, the joint strength between the plate-shaped member 100 and the plate-shaped member 200 is increased.
　このように、本実施形態では、板状部材２００のうち分配部１２の一部が形成されている部分には、複数の溝が形成されている。これらの溝が形成されていることにより、一対の板状部材１００、２００の接合強度が高められる。 As described above, in the present embodiment, a plurality of grooves are formed in the portion of the plate-shaped member 200 in which a part of the distribution portion 12 is formed. By forming these grooves, the joint strength of the pair of plate-shaped members 100 and 200 is increased.
　図４においては、板状部材２００の短手方向に沿った幅寸法が、板状部材２００の全体において均一となるように描かれている。しかしながら、実際には、板状部材２００のうち分配部１２が形成されている部分における幅寸法は、冷却部１１が形成されている部分における幅寸法よりも僅かに大きくなっている。このような幅寸法の違いは、点線ＤＬ１の範囲に対して局所的なプレス加工が施されたことによるものである。本実施形態では、板状部材２００の冷却部１１における幅寸法が上記のように大きくなっているので、管状部材３０が挿通され接合される部分である凹部２１１が大きく形成されている。これにより、管状部材３０と板状部材２００との間の接合強度が高められている。 In FIG. 4, the width dimension of the plate-shaped member 200 along the lateral direction is drawn so as to be uniform throughout the plate-shaped member 200. However, in reality, the width dimension of the portion of the plate-shaped member 200 where the distribution portion 12 is formed is slightly larger than the width dimension of the portion where the cooling portion 11 is formed. Such a difference in width dimension is due to local press working on the range of the dotted line DL1. In the present embodiment, since the width dimension of the cooling portion 11 of the plate-shaped member 200 is large as described above, the recess 211, which is a portion through which the tubular member 30 is inserted and joined, is formed large. As a result, the joint strength between the tubular member 30 and the plate-shaped member 200 is increased.
　本実施形態では、複数の凹部２２０が折り返し部２３０で繋げられることにより、１本の流路ＦＰが形成されている。流体は、冷却部１１の長手方向に沿って一往復半する経路で流れる。仮に、流体が折り返すことなく直線状に流れるように流路ＦＰが形成されていた場合には、冷却部の長手方向に沿った一端側と他端側との間における、流体の温度差が大きくなってしまう。これに対し、本実施形態では、流体が冷却部１１の長手方向に沿って一往復半するように流路ＦＰが形成されているので、上記のような温度差を抑制し、それぞれの蓄電池２０を均等に冷却することができる。 In the present embodiment, one flow path FP is formed by connecting a plurality of recesses 220 with a folded-back portion 230. The fluid flows in a path that makes one and a half round trips along the longitudinal direction of the cooling unit 11. If the flow path FP is formed so that the fluid flows linearly without folding back, the temperature difference of the fluid between one end side and the other end side along the longitudinal direction of the cooling portion is large. turn into. On the other hand, in the present embodiment, since the flow path FP is formed so that the fluid reciprocates and a half along the longitudinal direction of the cooling unit 11, the temperature difference as described above is suppressed, and each storage battery 20 Can be cooled evenly.
　また、本実施形態では流路ＦＰを上記のように形成することで、流路ＦＰの流路長が長くなり、流路ＦＰの流路抵抗が大きくなっている。このため、複数の冷却部１１に対する流体の分配量のばらつきも低く抑えることができる。その結果、それぞれの蓄電池２０を更に均等に冷却することができる。 Further, in the present embodiment, by forming the flow path FP as described above, the flow path length of the flow path FP becomes long, and the flow path resistance of the flow path FP increases. Therefore, the variation in the amount of fluid distributed to the plurality of cooling units 11 can be suppressed to a low level. As a result, each storage battery 20 can be cooled more evenly.
　本実施形態では、第１工程及び第２工程における凹部２２０等の形成は、板状部材２００に対してのみ行われ、板状部材１００はその全体が平坦な部材となっている。このような態様に替えて、板状部材１００に対しても、上記と同様の方法によって凹部２２０等が形成されるような態様であってもよい。この場合、板状部材１００が、板状部材２００と対称な形状となるように、板状部材１００に対しても第１工程及び第２工程が行われることとすればよい。 In the present embodiment, the concave portions 220 and the like are formed only on the plate-shaped member 200 in the first step and the second step, and the plate-shaped member 100 is a flat member as a whole. Instead of such an embodiment, the plate-shaped member 100 may also have an embodiment in which the recess 220 or the like is formed by the same method as described above. In this case, the first step and the second step may be performed on the plate-shaped member 100 so that the plate-shaped member 100 has a symmetrical shape with the plate-shaped member 200.
　つまり、第１工程は、一対の板状部材１００、２００のうちの一方ではなく両方に、その長手方向に沿った直線状の流路である直線流路を、ロール成形により複数本形成する工程であってもよい。また、第２工程は、一対の板状部材１００、２００のうちの一方ではなく両方に、プレス加工により接続部等を形成する工程であってもよい。 That is, the first step is a step of forming a plurality of linear flow paths, which are linear flow paths along the longitudinal direction, on both of the pair of plate-shaped members 100 and 200, not one of them, by roll molding. It may be. Further, the second step may be a step of forming a connecting portion or the like by press working on both of the pair of plate-shaped members 100 and 200 instead of one.
　第２実施形態について説明する。以下では、第１実施形態と異なる点について主に説明し、第１実施形態と共通する点については適宜説明を省略する。 The second embodiment will be described. In the following, the points different from the first embodiment will be mainly described, and the points common to the first embodiment will be omitted as appropriate.
　図８には、本実施形態に係る熱交換器１０の全体構成が模式的に示されている。本実施形態では、一対の分配部１２のそれぞれが、単一の管状の部材として構成されている。冷却部１１と分配部１２との間は、管状部材３０により連結されている。本実施形態では、管状部材３０の内側に形成された流路の伸びる方向は、冷却部１１の長手方向に沿った方向、すなわち、分配部１２の伸びる方向に対して垂直な方向となっている。 FIG. 8 schematically shows the overall configuration of the heat exchanger 10 according to the present embodiment. In this embodiment, each of the pair of distribution units 12 is configured as a single tubular member. The cooling unit 11 and the distribution unit 12 are connected by a tubular member 30. In the present embodiment, the extending direction of the flow path formed inside the tubular member 30 is the direction along the longitudinal direction of the cooling unit 11, that is, the direction perpendicular to the extending direction of the distribution unit 12. ..
　図９には、冷却部１１を構成する一対の板状部材１００、２００のうち、板状部材２００の一部の構成が示されている。尚、図９においては、板状部材２００の一方側の端部近傍の形状のみが示されているのであるが、板状部材２００の他方側の端部近傍の形状は、図９に示される部分の形状と対称な形状となっている。 FIG. 9 shows a part of the plate-shaped members 200 among the pair of plate-shaped members 100 and 200 constituting the cooling unit 11. Although only the shape near the end on one side of the plate-shaped member 200 is shown in FIG. 9, the shape near the end on the other side of the plate-shaped member 200 is shown in FIG. The shape is symmetrical to the shape of the part.
　本実施形態でも、板状部材２００は、先に説明したものと同様の第１工程及び第２工程を経て形成される。ただし、本実施形態では、第２工程のプレス加工により形成される部分の形状において、第１実施形態と異なっている。板状部材２００のうちプレス加工が施された部分が、図９においては点線ＤＬ２で囲まれている。本実施形態では、プレス加工によって、折り返し部である凹部２３０と、接続部である凹部２４０が形成される一方で、第１実施形態のような「板状部材２００の分配部１２」は形成されない。尚、図９に示される一点鎖線Ｌ１は、板状部材２００に形成された直線状の溝である。当該溝は、プレス加工を施した際に形成された微小深さの溝であって、図４の一点鎖線Ｌ１で示される溝と同様のものである。 Also in this embodiment, the plate-shaped member 200 is formed through the same first step and second step as those described above. However, this embodiment is different from the first embodiment in the shape of the portion formed by the press working in the second step. The press-processed portion of the plate-shaped member 200 is surrounded by the dotted line DL2 in FIG. In the present embodiment, the recess 230 which is a folded portion and the recess 240 which is a connecting portion are formed by press working, but the "distributing portion 12 of the plate-shaped member 200" as in the first embodiment is not formed. .. The alternate long and short dash line L1 shown in FIG. 9 is a linear groove formed in the plate-shaped member 200. The groove is a groove having a minute depth formed when the press working is performed, and is similar to the groove shown by the alternate long and short dash line L1 in FIG.
　凹部２４０は、板状部材２００の長手方向の端部であって、流路ＦＰの端部となる位置に形成される。凹部２４０は、その内側に管状部材３０が挿通され接合される部分となっている。 The recess 240 is an end portion of the plate-shaped member 200 in the longitudinal direction, and is formed at a position that is an end portion of the flow path FP. The recess 240 is a portion through which the tubular member 30 is inserted and joined.
　本実施形態における分配部１２は、冷却部１１と同様に、一対の板状部材１００（不図示）、２００を互いに接合することによって形成されている。図１０には、冷却部１１を構成する一対の板状部材１００、２００のうち、板状部材２００の一部の構成が示されている。 The distribution unit 12 in the present embodiment is formed by joining a pair of plate-shaped members 100 (not shown) and 200 to each other, similarly to the cooling unit 11. FIG. 10 shows a part of the plate-shaped members 200 among the pair of plate-shaped members 100 and 200 constituting the cooling unit 11.
　本実施形態では、板状部材２００も、先に説明したものと同様の第１工程及び第２工程を経て形成される。第１工程では、板状部材２００に、その長手方向に沿って伸びる単一の凹部２１０が形成される。第２工程では、板状部材２００にプレス加工を施すことで、複数の凹部２５０が形成される。板状部材２００のうちプレス加工が施された部分が、図１０においては点線ＤＬ３で囲まれている。凹部２５０は、その内側に管状部材３０が挿通され接合される部分となっている。 In the present embodiment, the plate-shaped member 200 is also formed through the same first and second steps as those described above. In the first step, the plate-shaped member 200 is formed with a single recess 210 extending along the longitudinal direction thereof. In the second step, a plurality of recesses 250 are formed by pressing the plate-shaped member 200. The press-processed portion of the plate-shaped member 200 is surrounded by the dotted line DL3 in FIG. The recess 250 is a portion through which the tubular member 30 is inserted and joined.
　このような構成の熱交換器１０では、複数の冷却部１１が、管状部材３０及び分配部１２を介して互いに連結された構成となっている。管状部材３０及び分配部１２の全体が、本実施形態における「連結部材」に該当する。このような構成であっても、第１実施形態で説明したものと同様の効果を奏する。 In the heat exchanger 10 having such a configuration, a plurality of cooling portions 11 are connected to each other via a tubular member 30 and a distribution portion 12. The entire tubular member 30 and the distribution unit 12 correspond to the "connecting member" in the present embodiment. Even with such a configuration, the same effect as that described in the first embodiment can be obtained.
　第３実施形態について説明する。以下では、第１実施形態と異なる点について主に説明し、第１実施形態と共通する点については適宜説明を省略する。 The third embodiment will be described. In the following, the points different from the first embodiment will be mainly described, and the points common to the first embodiment will be omitted as appropriate.
　図１１は、本実施形態に係る冷却部１１を、その長手方向に対し垂直な面で切断した場合における断面の一部を模式的に描いたものである。図１１において、符号２６０が付された部分及び符号２７０が付された部分は、図４において斜線が付された部分に対応する部分、すなわち、板状部材２００のうち板状部材１００に接合される部分である。本実施形態では、板状部材１００に接合される部分の全体が平坦となっているのではなく、その一部が板状部材１００に向けて突出している。図１１では、このように突出している部分に符号２７０が付してある。当該部分のことを、以下では「突出部２７０」とも表記する。突出部２７０は、板状部材１００に接合される部分のうち、その内側となる部分に形成されている。突出部２７０の周囲は、図１１において符号２６０が付されている部分により囲まれている。 FIG. 11 is a schematic view of a part of a cross section when the cooling unit 11 according to the present embodiment is cut in a plane perpendicular to the longitudinal direction thereof. In FIG. 11, the portion with reference numeral 260 and the portion with reference numeral 270 are joined to the portion corresponding to the portion shaded in FIG. 4, that is, the plate-shaped member 100 of the plate-shaped member 200. This is the part. In the present embodiment, the entire portion joined to the plate-shaped member 100 is not flat, but a part thereof protrudes toward the plate-shaped member 100. In FIG. 11, reference numeral 270 is attached to such a protruding portion. In the following, this part will also be referred to as "protruding portion 270". The protrusion 270 is formed in a portion inside the portion joined to the plate-shaped member 100. The periphery of the protrusion 270 is surrounded by a portion designated by reference numeral 260 in FIG.
　図１１において符号６００が付されているのは接着剤である。本実施形態では、板状部材２００に突出部２７０が形成されているので、突出部２７０の周囲における接着剤が厚くなっている。その結果、接着剤に形成されるフィレット６１０の曲率半径が大きくなっており、その結果として接着剤による接合強度が更に高められている。 In FIG. 11, reference numeral 600 is attached to the adhesive. In the present embodiment, since the protruding portion 270 is formed on the plate-shaped member 200, the adhesive around the protruding portion 270 is thickened. As a result, the radius of curvature of the fillet 610 formed in the adhesive is increased, and as a result, the bonding strength by the adhesive is further increased.
　突出部２７０は、図４において、斜線が付された部分の内側となる範囲全体に形成することができる。板状部材１００と板状部材２００との接合前においては、接着剤を、板状部材２００のうち突出部２７０の全体を覆うような範囲に、予め塗布することとすればよい。 The protrusion 270 can be formed in the entire range inside the shaded portion in FIG. Before joining the plate-shaped member 100 and the plate-shaped member 200, the adhesive may be applied in advance to a range of the plate-shaped member 200 that covers the entire protruding portion 270.
　このように、一方の板状部材２００のうち、他方の板状部材１００に対し接合される部分には、他方の板状部材１００に向けて突出するように突出部２７０が形成されている。このような突出部２７０は、先に述べた第１工程及び第２工程のそれぞれにおいて形成しておけばよい。 As described above, in the portion of one plate-shaped member 200 that is joined to the other plate-shaped member 100, a protruding portion 270 is formed so as to project toward the other plate-shaped member 100. Such a protruding portion 270 may be formed in each of the first step and the second step described above.
　以上、具体例を参照しつつ本実施形態について説明した。しかし、本開示はこれらの具体例に限定されるものではない。これら具体例に、当業者が適宜設計変更を加えたものも、本開示の特徴を備えている限り、本開示の範囲に包含される。前述した各具体例が備える各要素およびその配置、条件、形状などは、例示したものに限定されるわけではなく適宜変更することができる。前述した各具体例が備える各要素は、技術的な矛盾が生じない限り、適宜組み合わせを変えることができる。 The present embodiment has been described above with reference to specific examples. However, the present disclosure is not limited to these specific examples. Those skilled in the art with appropriate design changes to these specific examples are also included in the scope of the present disclosure as long as they have the features of the present disclosure. Each element included in each of the above-mentioned specific examples, its arrangement, conditions, shape, etc. is not limited to the illustrated one, and can be appropriately changed. The combinations of the elements included in each of the above-mentioned specific examples can be appropriately changed as long as there is no technical contradiction.

Claims (11)

  1. 　蓄電池（２０）を冷却するための熱交換器（１０）であって、
    　前記蓄電池に当接し、内側の流路（ＦＰ）を通る流体により前記蓄電池を冷却する部分である複数の冷却部（１１）と、
    　それぞれの前記冷却部の両端に接続され、前記冷却部に流体を分配するための部分である一対の分配部（１２）と、を備え、
    　それぞれの前記冷却部は、一対の板状部材（１００，２００）を互いに接合することにより形成されており、
    　それぞれの前記冷却部を、連結部材（３０）を介して互いに連結することにより構成されている熱交換器。     A heat exchanger (10) for cooling the storage battery (20).
    A plurality of cooling units (11), which are portions that come into contact with the storage battery and cool the storage battery by a fluid passing through an inner flow path (FP).
    A pair of distribution units (12), which are connected to both ends of each of the cooling units and are portions for distributing a fluid to the cooling units, are provided.
    Each of the cooling portions is formed by joining a pair of plate-shaped members (100, 200) to each other.
    A heat exchanger configured by connecting the cooling units to each other via a connecting member (30).
  2. 　前記板状部材に前記分配部の一部が形成されている、請求項１に記載の熱交換器。 The heat exchanger according to claim 1, wherein a part of the distribution portion is formed on the plate-shaped member.
  3. 　前記板状部材のうち前記分配部の一部が形成されている部分には、複数の溝が形成されている、請求項２に記載の熱交換器。 The heat exchanger according to claim 2, wherein a plurality of grooves are formed in a portion of the plate-shaped member in which a part of the distribution portion is formed.
  4. 　一方の前記板状部材のうち、他方の前記板状部材に対し接合される部分には、他方の前記板状部材に向けて突出する突出部（２７０）が形成されている、請求項１乃至３のいずれか１項に記載の熱交換器。 A portion (270) of one of the plate-shaped members, which is joined to the other plate-shaped member, is formed with a protruding portion (270) protruding toward the other plate-shaped member. The heat exchanger according to any one of 3.
  5. 　一対の前記板状部材を互いに接合する方向に沿って見た場合においては、それぞれの前記板状部材の外形が互いに同一である、請求項１乃至４のいずれか１項に記載の熱交換器。 The heat exchanger according to any one of claims 1 to 4, wherein the outer shapes of the respective plate-shaped members are the same when viewed along the direction in which the pair of plate-shaped members are joined to each other. ..
  6. 　蓄電池（２０）を冷却するための熱交換器（１０）の製造方法であって、
    　前記熱交換器は、
    　前記蓄電池に当接し、内側の流路（ＦＰ）を通る流体により前記蓄電池を冷却する部分である複数の冷却部（１１）と、
    　それぞれの前記冷却部の両端に接続され、前記冷却部に流体を分配するための部分である一対の分配部（１２）と、を備え、
    　それぞれの前記冷却部は、一対の板状部材（１００，２００）を互いに接合することにより形成されており、
    　それぞれの前記冷却部を、連結部材（３０）を介して互いに連結することにより構成されているものであって、
    　一対の前記板状部材のうちの少なくとも一方に、その長手方向に沿った直線状の流路である直線流路（２２０）を、ロール成形により形成する第１工程と、
    　前記第１工程において前記直線流路が形成された前記板状部材の、その長手方向に沿った端部にプレス加工を施すことにより、前記分配部に接続される部分である接続部（２４０）を形成する第２工程と、
    　一対の前記板状部材を互いに接合する第３工程と、を有する製造方法。     A method for manufacturing a heat exchanger (10) for cooling a storage battery (20).
    The heat exchanger is
    A plurality of cooling units (11), which are portions that come into contact with the storage battery and cool the storage battery by a fluid passing through an inner flow path (FP).
    A pair of distribution units (12), which are connected to both ends of each of the cooling units and are portions for distributing a fluid to the cooling units, are provided.
    Each of the cooling portions is formed by joining a pair of plate-shaped members (100, 200) to each other.
    Each of the cooling portions is configured by connecting to each other via a connecting member (30).
    A first step of forming a linear flow path (220), which is a linear flow path along the longitudinal direction thereof, on at least one of the pair of plate-shaped members by roll molding.
    A connecting portion (240) which is a portion connected to the distributing portion by pressing an end portion of the plate-shaped member on which the linear flow path is formed in the first step along the longitudinal direction thereof. The second step of forming
    A manufacturing method comprising a third step of joining a pair of the plate-shaped members to each other.
  7. 　前記第１工程においては、一対の前記板状部材のうちの少なくとも一方に前記直線流路を複数本形成し、
    　前記第２工程においては、それぞれの前記直線流路を繋いで一本の流路とする折り返し部（２３０）を形成する、請求項６に記載の製造方法。     In the first step, a plurality of the linear flow paths are formed in at least one of the pair of plate-shaped members.
    The manufacturing method according to claim 6, wherein in the second step, a folded-back portion (230) is formed by connecting the linear flow paths to form a single flow path.
  8. 　前記第２工程においては、前記板状部材に前記分配部の一部も形成する、請求項６又は７に記載の製造方法。 The manufacturing method according to claim 6 or 7, wherein in the second step, a part of the distribution portion is also formed on the plate-shaped member.
  9. 　前記第３工程においては、一対の前記板状部材を互いに接合すると共に、それぞれの前記冷却部を、連結部材を介して互いに接合して連結する、請求項６乃至８のいずれか１項に記載の製造方法。 The third step is described in any one of claims 6 to 8, wherein the pair of the plate-shaped members are joined to each other, and the cooling portions are joined to each other via a connecting member to be connected. Manufacturing method.
  10. 　前記第１工程及び前記第２工程においては、一方の前記板状部材のうち他方の前記板状部材に接合される部分に、突出部が形成される、請求項６乃至９のいずれか１項に記載の製造方法。 The first step and the second step, any one of claims 6 to 9, wherein a protruding portion is formed in a portion of one of the plate-shaped members to be joined to the other plate-shaped member. The manufacturing method described in.
  11. 　前記第３工程において互いに接合される一対の前記板状部材は、接合する方向に沿って見た場合におけるそれぞれの外形が互いに同一である、請求項６乃至１１のいずれか１項に記載の製造方法。 The production according to any one of claims 6 to 11, wherein the pair of plate-shaped members joined to each other in the third step have the same outer shape when viewed along the joining direction. Method.
PCT/JP2020/024299 2019-06-28 2020-06-22 Heat exchanger and manufacturing method therefor WO2020262275A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014191916A (en) * 2013-03-26 2014-10-06 Mitsubishi Motors Corp Cooling device
JP2019086254A (en) * 2017-11-09 2019-06-06 株式会社デンソー Evaporator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014191916A (en) * 2013-03-26 2014-10-06 Mitsubishi Motors Corp Cooling device
JP2019086254A (en) * 2017-11-09 2019-06-06 株式会社デンソー Evaporator

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