Radiator assembly

Abstract

A heat sink assembly includes a first heat sink and a second heat sink having a plurality of ribs integrally molded along an internal length direction by extrusion molding, a space between the ribs forming a flow path through which a coolant flows, a first surface and a second surface of two ends of the first radiator and the second radiator in the length direction are open, and the first radiator and the second radiator are provided with communication ports on the side wall of one side adjacent to the second surface. The first heat sink and the second heat sink are integrally formed by the side walls forming joint surfaces in such a manner that the communication ports are aligned, and the ribs of the first heat sink and the second heat sink have a length such that both ends of the ribs are spaced apart from the first surface and the second surface by a predetermined distance. And the open first and second surfaces at both ends of the first and second heat sinks are closed by end plugs inserted in a manner spaced apart from the ends of the ribs.

Description

Technical Field

[0001] The present disclosure relates to a heat sink assembly mounted to a bottom surface of a battery pack having a plurality of secondary batteries to facilitate heat dissipation of the battery pack.

[0002] This application claims priority to Korean Patent Application No. 10-2023-0071921 filed on June 2, 2023, the disclosure of which is incorporated herein by reference in its entirety. Background Art

[0003] Unlike primary batteries, secondary batteries can be recharged repeatedly and have been extensively researched and developed in recent years due to their potential for miniaturization and large capacity. The demand for secondary batteries as energy sources is rapidly increasing due to the continuous development of technology and the increasing demand for mobile devices, as well as the emergence of electric vehicles and energy storage systems in response to environmental protection needs.

[0004] Secondary batteries are classified into button batteries, cylindrical batteries, prismatic batteries, and pouch-type batteries according to the shape of the battery case. In a secondary battery, an electrode assembly mounted in a battery case is a chargeable and dischargeable device for generating electrical energy, which includes a stacked structure of electrodes and separators.

[0005] Since secondary batteries are required to be used continuously for a long time, it is necessary to effectively control the heat generated during the charging and discharging process. If the secondary battery is not properly cooled, the temperature increase will lead to an increase in current, which in turn will lead to an increase in temperature, which will cause a chain reaction and ultimately lead to the catastrophic consequences of thermal runaway.

[0006] In order to effectively dissipate the heat generated by the secondary battery, a radiator (also called a cooling plate) through which a coolant flows is widely used. The radiator is mounted on the bottom surface of a group of secondary batteries (e.g., a battery pack in which a plurality of secondary batteries are mounted) and performs a cooling function by absorbing the heat generated in the battery pack with the coolant and releasing it to the outside.

[0007] Radiators can be divided into brazed radiators and extruded radiators according to their structure or manufacturing method. A brazed radiator is a structure in which two plates are brazed together to form a flow path. It has a high degree of freedom in flow path design, but due to material degradation, it has a disadvantage in structural rigidity. On the other hand, an extruded radiator manufactured as a continuum by extrusion molding has an advantage in structural rigidity, but has the following disadvantages: only a straight flow path can be achieved, resulting in a large number of ports, so the pipes used for connection will take up space. Summary of the invention

[0008] Technical issues

[0009] The present disclosure aims to provide a radiator assembly which is an extruded radiator and does not require a separate pipe to form a flow path, so it occupies a smaller space and can reduce the number of components through a simplified flow path configuration, thereby improving the pressure difference.

[0010] However, the technical problems to be solved by the present disclosure are not limited to the above problems, and those skilled in the art can clearly understand other problems not mentioned from the description of the present disclosure described below.

[0011] Technical Solution

[0012] The present disclosure relates to a radiator assembly. In one example, the radiator assembly includes a first radiator and a second radiator, the first radiator and the second radiator having a plurality of ribs integrally formed along an inner length direction by extrusion molding, the spaces between the ribs forming a flow path for coolant to flow through, the first surface and the second surface at both ends of the first radiator and the second radiator in the length direction are open, the first radiator and the second radiator having a connecting port on a side wall adjacent to the second surface, wherein the first radiator and the second radiator are formed as a whole by forming a joint surface through the side wall in a manner that aligns the connecting port, the ribs of the first radiator and the second radiator having a length such that both ends of the ribs are spaced apart from the first surface and the second surface by a predetermined distance, and the first surface and the second surface of the opening at both ends of the first radiator and the second radiator are closed by end plugs inserted in a manner spaced apart from the ends of the ribs.

[0013] In one embodiment of the present disclosure, the first surface and the second surface of the first heat sink and the second heat sink are each closed by an end plug, and both ends of the side walls of the first heat sink and the second heat sink forming the joint surface can be formed with cutout portions corresponding to the insertion depth of the end plug.

[0014] One of the first radiator and the second radiator includes an inlet in communication with the flow path, and the other radiator includes an outlet in communication with the flow path.

[0015] The inlet and outlet may be located in the space between the end plug and the rib on the first surface.

[0016] Furthermore, the inlet and the outlet may be located in a diagonal direction with respect to the communication port.

[0017] Furthermore, the ribs of the first and second heat sinks may be configured such that a first end of the rib on the first surface side is farther from the first surface as the first end approaches the joint surface, and a second end of the rib on the second surface side is closer to the second surface as the second end approaches the joint surface.

[0018] At the same time, according to an embodiment of the present disclosure, a pair of first radiator modules and second radiator modules can be provided, and the side walls have a joint surface formed in a manner so that the connecting ports are aligned, and the outlet provided on one of the modules can be connected to the inlet provided on the other module through a pipe component.

[0019] The radiator assembly of the present invention is disclosed, wherein the second radiator includes another connecting port on the side wall adjacent to the first surface, and the radiator assembly also includes a third radiator, wherein the third radiator includes a plurality of ribs integrally formed along the internal length direction by extrusion molding, and the space between the ribs forms a flow path for the coolant to flow, and the first surface and the second surface of the third radiator at both ends in the length direction are open, the third radiator has a connecting port on the side wall on one side adjacent to the first surface, and the third radiator has a connecting port on the side wall on one side adjacent to the first surface, wherein the second radiator and the third radiator are formed as a whole through the side walls to form a joint surface in a manner that aligns the connecting ports, wherein the ribs of the third radiator have a length such that both ends of the ribs are spaced a predetermined distance from the first surface and the second surface, and the open first surface and second surface at both ends of the third radiator can be closed by end plugs inserted in a manner spaced from the ends of the ribs.

[0020] In addition, the first surface and the second surface of each of the first to third heat sinks can be closed by an end plug respectively, and both ends of the side walls forming the joint surface of the first and third heat sinks can be formed with cutouts corresponding to the depth of insertion of the end plugs.

[0021] One of the first radiator and the third radiator may be provided with an inlet communicating with the flow path, and the other radiator may be provided with an outlet communicating with the flow path.

[0022] Of the inlet and the outlet, one of the ports may be located in a space between the end plug and the rib on the first surface, and the other port may be located in a space between the end plug and the rib on the second surface.

[0023] According to one embodiment of the present disclosure, based on the flow of the coolant, the inlet and the outlet may be located in a diagonal direction with respect to the nearest communication port on the upstream side.

[0024] Such a radiator assembly disclosed herein can be continuously expandable, wherein the Nth radiator (where N is a natural number greater than 3) and the (N+1)th radiator are formed as a whole by forming a joint surface in a manner that aligns the connecting openings formed on one side wall, and the first surface and the second surface of the opening at both ends of the (N+1)th radiator are closed by end plugs inserted in a manner spaced apart from the ends of ribs formed along the inner length direction.

[0025] Beneficial Effects

[0026] The radiator assembly of the present disclosure having the above-mentioned configuration has excellent structural rigidity since the radiator is manufactured as a continuous body by extrusion molding, and an internal flow path can be formed between the mutually connected radiators by machining the two ends and side walls in the length direction of the ribs integrally formed in the radiator, and a cooling channel divided into an inlet and an outlet can be configured by closing the surface of the opening with an end plug.

[0027] Therefore, the radiator assembly of the present invention uses an extruded radiator as the basic frame (which has advantages in structural rigidity), and since no separate pipes are required to form a flow path, it occupies a smaller space and can reduce the number of components through a simplified flow path configuration, thereby increasing the pressure difference; and the heat dissipation area can be easily expanded by increasing the number of connected radiators.

[0028] However, the technical effects that can be obtained through the present disclosure are not limited to the above-mentioned effects, and those skilled in the art can clearly understand other effects that are not mentioned from the description of the present disclosure described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Since the following drawings attached to this specification illustrate exemplary embodiments of the present disclosure and facilitate understanding of the technical idea of ​​the present disclosure in combination with the specific embodiments of the present disclosure described below, the present disclosure should not be limitedly interpreted based on the drawings.

[0030] Figure 1 is a diagram illustrating a heat sink assembly according to one embodiment of the present disclosure.

[0031] Figure 2 is an exploded perspective view of the heat sink assembly.

[0032] Figure 3 yes Figure 1 Detail of section "A".

[0033] Figure 4 yes Figure 1 Detail of section "B".

[0034] Figure 5 yes Figure 1 An overall view of the rib structure of the radiator assembly.

[0035] Figure 6 is a diagram showing an embodiment of a heat sink assembly to which a third heat sink is added.

[0036] Figure 7 is a diagram illustrating an exemplary heat sink assembly including four heat sinks.

[0037] Figure 8is a diagram showing the flow of coolant in a radiator assembly including two radiators.

[0038] Fig. 9 and Fig.10 It shows Figure 8 A diagram of an embodiment of a heat sink assembly joined to both sides of a battery pack mid-frame.

[0039] Fig.11 It shows Figure 6 Diagram of the flow of coolant in a radiator assembly with three radiators joined in a row.

[0040] Fig.12 It shows Figure 7 Diagram of the flow of coolant in a radiator assembly with four radiators joined in a row. DETAILED DESCRIPTION

[0041] The present disclosure may have various modifications and various embodiments, so specific embodiments thereof will be described in detail below.

[0042] However, it should be understood that the present disclosure is not limited to the specific embodiments, and includes all modifications, equivalents, or substitutes within the spirit and technical scope of the present disclosure.

[0043] The terms "include", "comprising" and "having" as used herein indicate the presence of features, numbers, steps, actions, parts or components or a combination thereof described in the specification, and it should be understood that the possibility of the presence or addition of one or more other features, numbers, steps, actions, parts, components or a combination thereof is not precluded.

[0044] Furthermore, in the present disclosure, when a component in a layer, film, region, plate, etc. is “disposed” “on” another component, this includes not only a case where a component is “directly disposed” “on” another component, but also a case where another component is interposed between the component and the other component. In contrast, when a component in a layer, film, region, plate, etc. is “disposed” “below” another component, this includes not only a case where a component is “disposed “directly below” another component, but also a case where another component is interposed between the component and the other component. Furthermore, in the present application, “on” includes not only a case where it is disposed on the upper part, but also a case where it is disposed on the lower part.

[0045] The present disclosure relates to a radiator assembly. In one example, the radiator assembly includes a first radiator and a second radiator, the first radiator and the second radiator having a plurality of ribs integrally formed along an inner length direction by extrusion molding, the spaces between the ribs forming a flow path for coolant to flow through, the first radiator and the second radiator having an open first surface and a second surface at both ends in the length direction and having a communication port on a side wall adjacent to the second surface, the first radiator and the second radiator being formed as a whole by forming a joint surface through the side wall in a manner that aligns the communication port, the first radiator and the second radiator having ends spaced apart from the first surface and the second surface by a predetermined distance, and the first surface and the second surface of the opening at both ends of the first radiator and the second radiator being closed by end plugs inserted in a manner spaced apart from the ends of the ribs.

[0046] The radiator assembly of the present disclosure has the above-mentioned configuration, wherein the radiator is manufactured as a continuous body by extrusion molding to have excellent structural rigidity, and the ends and side walls in the length direction of the ribs integrally formed in the radiator are machined to form an internal flow path between the mutually connected radiators, and the end plug closes the surface of the opening to form a cooling channel divided into an inlet and an outlet.

[0047] Therefore, the radiator assembly of the present invention uses an extruded radiator as the basic frame (which has advantages in structural rigidity), and since no separate pipes are required to form a flow path, the occupied space is smaller and the number of components can be reduced by simplifying the flow path configuration, thereby increasing the pressure difference; and the heat dissipation area can be easily expanded by increasing the number of connected radiators.

[0048] Hereinafter, a specific embodiment of a separate wall member for a battery pack case 130 according to the present disclosure will be described in detail with reference to the accompanying drawings. For reference, the front, rear, up, down, left, and right directions used to indicate relative positions in the following description are for understanding the present disclosure, and unless otherwise specified, represent the directions shown in the drawings.

[0049] [First embodiment]

[0050] Figure 1 is a diagram showing a heat sink assembly according to an embodiment of the present disclosure, Figure 2 is an exploded perspective view of the radiator assembly. Figure 3 yes Figure 1 Detail of part "A", Figure 4 yes Figure 1 Detail of section "B".

[0051] Reference Figures 1 to 4 , the heat sink assembly 10 according to the embodiment of the present disclosure will be described in detail.

[0052] The heat sink assembly 10 of the present disclosure includes a first heat sink 101 and a second heat sink 102 and an end plug 200 that seals the surfaces of the openings of the first heat sink 101 and the second heat sink 102. The surfaces of the openings of the first heat sink 101 and the second heat sink 102 are surfaces at both ends in the length direction L, and for ease of description, the surfaces of the two openings will be referred to as a first surface 120 and a second surface 130, respectively. Here, the length direction L is defined as indicating the extrusion molding direction of the heat sink, in other words, the direction in which the ribs 110 extend, and the width direction W is defined as indicating a direction orthogonal to the length direction L, and in the width direction W, a plurality of ribs 110 are spaced apart.

[0053] The first radiator 101 and the second radiator 102 are manufactured to have substantially the same structure. For example, the first radiator 101 and the second radiator 102 can be manufactured by extrusion molding, wherein a plurality of ribs 110 along the inner length direction L are integrally molded. The first radiator 101 and the second radiator 102 can be prepared by cutting the extrusions continuously manufactured by extrusion molding into suitable lengths. In the first radiator 101 and the second radiator 102, the space between the spaced ribs 110 forms a flow path 112 for the coolant to flow through, and due to the characteristics of the extrusions, the first surface 120 and the second surface 130 at both ends in the length direction L are open.

[0054] The first heat sink 101 and the second heat sink 102 are integrally formed by firmly bonding the side walls of one side of the first heat sink 101 and the second heat sink 102 through a bonding process (e.g., friction stir welding). Before bonding, machining is performed on the side walls where the first heat sink 101 and the second heat sink 102 are bonded to each other (in other words, on the bonding surface 142) to form a communication port 140 between the first heat sink 101 and the second heat sink 102. By providing the communication port 140 on the bonding surface 142, the flow paths 112 of the first heat sink 101 and the second heat sink 102 are connected to each other.

[0055] Figure 3 The structure of processing the communication port 140 by cutting a predetermined length inward from the end of the side wall is shown. In other words, referring to the drawings, the communication port 140 is provided on one side of the side wall adjacent to the second surface 130. Of course, the communication port 140 can be formed and joined to the middle of the side wall, but in order to facilitate the flow of the coolant between the first radiator 101 and the second radiator 102, the communication port 140 can be preferably located at the end of the side wall. This is also conducive to the processing of the communication port 140 by cutting a part of the end of the side wall can be carried out together with the process of inserting the end plug 200 (which will be described later).

[0056] Figure 4A structure is shown in which spaces are formed for inserting end plugs 200 and coolants flowing in and out of the first heat sink 101 and the second heat sink 102 can be distributed to the flow paths 112 between the ribs 110. These spaces are produced by mechanical processing of cutting a predetermined length of the end of the rib 110 that can be reached through the first surface 120 and the second surface 130.

[0057] like Figure 2 As shown in the exploded perspective view of , the end plug 200 has a front surface 210 and an insertion portion 220. The insertion portion 220 is a protrusion that is inserted into the space between the top plate and the bottom plate of the first heat sink 101 and the second heat sink 102, and has a length corresponding to the inner width length (the distance between the inner surfaces of the side walls on both sides) of the first heat sink 101 and the second heat sink 102. For example, by sequentially performing friction stir welding on the top plate and the bottom plate of the first heat sink 101 and the second heat sink 102, the end plug 200 can be sealed and joined to the first heat sink 101 and the second heat sink 102. By overlapping the welding depths of the friction stir welding performed above and below, sealing can be completed on all sides of the first surface 120 and the second surface 130.

[0058] Refer again Figure 4 The ribs 110 of the first surface 120 are cut to a depth that the insertion portion 220 of the end plug 200 can be inserted, and are cut to a length suitable for forming a space between the end plug 200 and the ribs 110 for the coolant to flow in and out. Therefore, the ribs 110 of the first heat sink 101 and the second heat sink 102 have a length such that the ends of the ribs 110 are spaced apart from the first surface 120 by a predetermined distance, and the ends of the ribs 110 are also spaced apart from the insertion portion 220 of the end plug 200. Of course, the ribs 110 of the second surface 130 are also cut in the same manner.

[0059] In one embodiment of the present disclosure, the first surface 120 and the second surface 130 of the first heat sink 101 and the second heat sink 102 may be respectively closed by an end plug 200. To this end, both ends of the side walls of the first heat sink 101 and the second heat sink 102 forming the joint surface 142 may be formed with a cutout portion 150, and the cutout portion 150 corresponds to the insertion depth of the end plug 200 (in other words, the length of the insertion portion 220).

[0060] Regarding the machining of the cutout portion 150, the cutout portion 150 and the communication port 140 can be formed simultaneously. In other words, when the cutout portion 150 is formed at the end of the joint surface 142 of the second surface 130, the cutout portion 150 and the communication port 140 can be formed simultaneously by cutting a depth greater than the length of the communication port 140. The outside of the communication port 140 is sealed by the insertion portion 220 of the end plug 200, and the communication port 140 is continuously formed in the form of a cut, which simplifies the machining procedure.

[0061] Figure 5 1 is a diagram showing the overall structure of the rib 110 of the heat sink assembly 10. Although the total length of each rib 110 is almost the same, the points at which the two ends of each rib 110 are located are formed differently. This change in the structure of the rib 110 is produced by adjusting the processing depth of the cutting tool approaching the first surface 120 and the second surface 130.

[0062] like Figure 5 As shown, the ribs 110 of the first heat sink 101 and the second heat sink 102 can be configured in such a way that one end of the first surface 120 gradually moves away from the first surface 120 as it approaches the joint surface 142, and the other end of the second surface 130 gradually moves close to the second surface 130 as it approaches the joint surface 142. In other words, since the insertion portion 220 of the end plug 200 is in the form of a flat plate with a certain protruding length, the coolant flow space between the end plug 200 and the ribs 110 on the first surface 120 and the second surface 130 varies with the position due to the above arrangement of the ribs 110. This is to promote the smooth flow of the coolant, which will be described in the third embodiment.

[0063] [Second embodiment]

[0064] Figure 6 The second embodiment is shown, and the heat transfer area of ​​the heat sink assembly 10 is enlarged by adding a third heat sink 103 in the width direction W of the first heat sink 101 and the second heat sink 102 described in the first embodiment.

[0065] Since the third heat sink 103 has the same structure as the first heat sink 101 and the second heat sink 102, repeated description of the third heat sink 103 will be omitted. However, since the second heat sink 102 is joined to the first heat sink 101 and should also be joined to the third heat sink 103, the second heat sink 102 is modified to have another communication port 140 on the side wall adjacent to the first surface 120. The added communication port 140 adjacent to the first surface 120 is formed to be opposite to the communication port 140 on the side wall adjacent to the second surface 130, in other words, the two communication ports 140 provided in the second heat sink 102 are located in diagonal directions to each other on different side walls.

[0066] The third radiator 103 has a structure that is substantially the same as that of the first radiator 101 and the second radiator 102, except that the position of the connecting port 140 is adjusted to achieve fluid connection with the second radiator 102. In other words, the third radiator 103 is also made of the same extrusion. The connecting port 140 of the third radiator 103 is located on a side wall adjacent to the first surface 120 to connect with the connecting port 140 added to the second radiator 102. The second radiator 102 and the third radiator 103 have side walls that form another joint surface 142 in a manner that the connecting ports 140 of the second radiator 102 and the third radiator 103 are aligned, so that the first radiator 101 to the third radiator 103 are formed as one body.

[0067] In the third heat sink 103, both ends of the rib 110 have a length spaced apart from the first surface 120 and the second surface 130 by a predetermined distance, and the first surface 120 and the second surface 130 of the openings at both ends of the third heat sink 103 are closed by the end plugs 200 spaced apart from the ends of the rib 110. In addition, as described in the first embodiment, the first surfaces 120 and the second surfaces 130 of the first to third heat sinks 101 to 103 are each closed by one end plug 200, and both ends of the side walls of the first to third heat sinks 101 to 103 forming the joint surfaces 142 may be formed with the cutout portions 150 corresponding to the depth of insertion of the end plugs 200.

[0068] It can be clearly understood from the above description that the heat sink assembly 10 of the present disclosure can continue to expand more than four heat sinks along the width direction W in the same manner. Figure 6 The heat sink assembly 10 having the first heat sink 101 to the third heat sink 103, the Nth heat sink (where N is a natural number greater than or equal to 3) and the (N+1)th heat sink are joined together to form an integral unit having a communication port 140 formed on one side wall. The first surface 120 and the second surface 130 of the opening at both ends of the (N+1)th heat sink are closed by the end plugs 200 inserted and spaced apart from the ends of the ribs 110 formed along the inner length direction L, so that the heat sink can continue to expand. Now refer to Figure 7 , exemplarily showing a heat sink assembly 10 including four heat sinks (a fourth heat sink 104 is added).

[0069] The simplification of the heat sink assembly 10 of the present disclosure is that each heat sink is made of the same extrusion, so that the only component that needs to be prepared separately is a single end plug 200 that integrally closes the first surface 120 and the second surface 130. Of course, the position of the communication port 140 should be alternated, but the position of the communication port 140 is adjusted by machining, and in this respect, the heat sink assembly 10 of the present disclosure is highly scalable.

[0070] [Third embodiment]

[0071] In the third embodiment, a different embodiment of the flow of coolant into and out of the radiator assembly 10 of the first and second embodiments described above will be described.

[0072] Figure 8 is a diagram showing the flow of coolant in a radiator assembly 10 including two radiators. Figure 8 , one of the first heat sink 101 and the second heat sink 102 has an inlet 310 coupled to the internal flow path 112 , and the other heat sink has an outlet 320 coupled to the internal flow path 112 .

[0073] Since the communication port 140 for fluidly connecting the first radiator 101 and the second radiator 102 is adjacent to the second surface 130, the inlet 310 and the outlet 320 are located in the diagonal direction relative to the communication port 140 on the first surface 120 to obtain a sufficiently long flow path. In addition, the inlet 310 and the outlet 320 are located in the space between the end plug 200 and the rib 110 on the first surface 120. Since the space between the end plug 200 and the rib 110 is a space shared by each flow path 112, the port 300 can be set so that the coolant flows in and out through the space, thereby allowing the coolant of all flow paths 112 to flow smoothly.

[0074] Fig. 9 and Fig.10 It is shown Figure 8 FIG. 1 is a diagram of an embodiment in which the heat sink assembly 10 is respectively coupled to both sides of the battery pack middle frame 400 . Fig. 9 and Fig.10 The various embodiments of the present invention differ in the coolant flow pattern formed in the radiator assembly 10 .

[0075] exist Fig. 9 In the embodiment, Figure 8 The radiator assembly 10 is changed into two modules 105 (a first radiator module and a second radiator module), and the two modules are connected to each other through the flow path 112 to form a further extended radiator assembly 10. This is slightly different from the expansion by joining between radiators described in the second embodiment in that each module 105 is joined to the battery pack middle frame 400, rather than joining between the modules 105. Each module frame 105 separated by the battery pack middle frame 400 is fluidically connected to the inlet 310 provided on another module 105 through the outlet 320 provided on one module 105 and the duct member 330.

[0076] In contrast, Fig.10In the embodiment of the present invention, the two modules 105 are identical in the configuration of the joints around the battery pack intermediate frame 400, but each module 105 is not in fluid communication with another module. An advantage of this embodiment is that it allows coolant inflow and outflow of different configurations. For example, Fig.10 As shown, by configuring the port 300 of each module 105 adjacent to the battery pack middle frame 400 as the inlet 310 , it can be designed so that the temperature of the coolant on one side of the battery pack middle frame 400 is maintained at a relatively low temperature.

[0077] Fig.11 It is shown Figure 6 FIG. 1 is a diagram of the flow of the coolant in the radiator assembly 10 in which three radiators are connected in a row. One of the first radiator 101 and the third radiator 103 has an inlet 310 coupled to the flow path 112, and the other radiator has an outlet 320 coupled to the flow path 112. Therefore, the flow paths 112 of the first radiator 101 to the third radiator 103 are connected in series, and the coolant flows in one direction. Since the flow paths 112 of the first radiator 101 to the third radiator 103 are connected internally via the communication port 140, it is sufficient for the radiator assembly 10 to be equipped with only one inlet 310 and one outlet 320.

[0078] Reference Fig.11 Of the inlet 310 and the outlet 320, one port 300 is located in the space between the end plug 200 and the rib 110 on the first surface 120, and the other port 300 is located in the space between the end plug 200 and the rib 110 on the second surface 130. Since the number of heat sinks is an odd number, in order to maximize the length of the entire flow path 112, the inlet 310 and the outlet 320 are respectively arranged in a diagonal direction with respect to the nearest communication port 140 on the upstream side (with respect to the coolant flow).

[0079] Fig.12 It is shown Figure 7 FIG. 1 is a diagram of the flow of coolant in a radiator assembly 10 having four radiators connected in a row. Basically, the flow pattern is similar to Fig.11 The only difference is that since the number of heat sinks is even, the inlet 310 and the outlet 320 are arranged on the same first surface 120 (refer to Fig.12 ).

[0080] As described above, the present disclosure has been described in more detail through the drawings and embodiments. However, since the configuration described in the drawings or embodiments described herein is only an embodiment of the present disclosure and does not represent the overall technical spirit of the present disclosure, it should be understood that the present disclosure covers various equivalents, modifications and substitutes on the filing date of the present application.

[0081] [Description of Reference Numerals]

[0082] 10: Radiator assembly

[0083] 100: Radiator

[0084] 101: First Radiator

[0085] 102: Second radiator

[0086] 103: Third Radiator

[0087] 104: Fourth Radiator

[0088] 105: Radiator module

[0089] 110: Rib

[0090] 112: Flow path

[0091] 120: First surface

[0092] 130: Second surface

[0093] 140: Connecting port

[0094] 142: Joint surface

[0095] 150: Incision

[0096] 200: End plug

[0097] 210: front surface

[0098] 220: Insertion

[0099] 300: mouth

[0100] 310: Entrance

[0101] 320: Exit

[0102] 330: Pipeline components

[0103] 400: Battery pack middle frame

[0104] L: length direction

[0105] W: Width direction

Claims

1. A radiator assembly, comprising: a first radiator and a second radiator, wherein the first radiator and the second radiator have a plurality of ribs integrally formed along an inner length direction by extrusion molding, and spaces between the ribs form a flow path for coolant to flow through, and the first surface and the second surface of both ends of the first radiator and the second radiator in the length direction are open, and the first radiator and the second radiator have a communication port on a side wall adjacent to the second surface, wherein the first heat sink and the second heat sink are connected to each other by forming a joint surface through the side wall in a manner that the communication openings are aligned, and The ribs of the first heat sink and the second heat sink have lengths such that both ends of the ribs are spaced apart from the first surface and the second surface by a predetermined distance, and The first and second surfaces of the openings at both ends of the first and second heat sinks are closed by end plugs inserted in a manner spaced apart from ends of the ribs.

2. The heat sink assembly according to claim 1, wherein: The first surface and the second surface of the first heat sink and the second heat sink are each closed by an end plug, and Notches corresponding to the insertion depth of the end plugs are formed at both ends of the side walls of the first heat sink and the second heat sink that form the joint surfaces.

3. The heat sink assembly according to claim 1, wherein: One of the first radiator and the second radiator includes an inlet communicating with the flow path, and the other radiator includes an outlet communicating with the flow path.

4. The heat sink assembly according to claim 3, wherein: The inlet and the outlet are located in a space between the end plug and the rib on the first surface.

5. The heat sink assembly according to claim 4, wherein: The inlet and the outlet are located in a diagonal direction with respect to the communication port.

6. The heat sink assembly according to claim 5, wherein: The ribs of the first heat sink and the second heat sink are configured so that a first end of the rib on the first surface side is farther away from the first surface as the first end approaches the joint surface, and a second end of the rib on the second surface side is closer to the second surface as the second end approaches the joint surface.

7. The heat sink assembly according to claim 5, wherein: A pair of modules of the first heat sink and the second heat sink are provided, the modules being integrated by forming a joint surface through the side wall in a manner that the communication openings are aligned, and An outlet disposed on one of the modules is connected to an inlet disposed on the other module through a pipe member.

8. The heat sink assembly according to claim 1, wherein: The second heat sink includes another communication port on a side wall adjacent to the first surface, The radiator assembly further includes a third radiator, wherein the third radiator includes a plurality of ribs integrally formed along an inner length direction by extrusion molding, and spaces between the ribs form a flow path for coolant to flow, and the first surface and the second surface of both ends of the third radiator in the length direction are open, and the third radiator has a communication port on a side wall adjacent to the first surface, wherein the second heat sink and the third heat sink are integrated by forming a joint surface through the side wall in a manner that the communication openings are aligned, and wherein the rib of the third heat sink has a length such that both ends of the rib are spaced apart from the first surface and the second surface by a predetermined distance, and The first surface and the second surface of the openings at both ends of the third heat sink are closed by end plugs inserted in a manner spaced apart from ends of the ribs.

9. The heat sink assembly according to claim 8, wherein: The first surface and the second surface of each of the first to third heat sinks are each closed by an end plug, and Both ends of the side walls of the first to third heat sinks forming the joint surfaces are formed with cutouts corresponding to the insertion depth of the end plugs.

10. The heat sink assembly according to claim 8, wherein: One of the first radiator and the third radiator is provided with an inlet communicating with the flow path, and the other radiator is provided with an outlet communicating with the flow path.

11. The heat sink assembly according to claim 10, wherein: In the inlet and the outlet, One of the ports is located in the space between the end plug and the rib on the first surface, and the other port is located in the space between the end plug and the rib on the second surface.

12. The heat sink assembly according to claim 11, wherein: The inlet and the outlet are located in a diagonal direction with respect to the nearest communication port on the upstream side based on the flow of the coolant.

13. The heat sink assembly according to claim 8, wherein: The Nth heat sink (where N is a natural number greater than or equal to 3) and the (N+1)th heat sink are formed integrally by forming a joint surface in such a manner that the communication openings formed on one side wall are aligned, and The first and second surfaces of the openings at both ends of the (N+1)th heat sink are closed by end plugs inserted in a manner spaced apart from ends of ribs formed along the inner length direction.

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