Radiator assembly

Abstract

A heat sink assembly includes a plurality of heat sinks having a plurality of ribs integrally molded along an internal length direction by extrusion molding, spaces between the ribs forming flow paths for a refrigerant to flow, first and second surfaces at both ends in the length direction being open, and a plurality of heat sinks having communication ports on a side wall adjacent to the first surface and / or the second surface, the plurality of heat sinks being integrally formed by having the side walls form an interface and the communication ports mate, and comprising a heat sink module, the entire flow path of the heat sink module being fluidly connected by the communication ports, the ribs of the heat sink have a length such that both ends of the ribs are spaced apart from the first and second surfaces by a predetermined distance, and the open first and second surfaces of both ends of the heat sink module are closed by the battery pack frame.

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 the benefit of priority to Korean Patent Application No. 10-2023-0071929, filed on Jun. 2, 2023, the disclosure of which is incorporated herein by reference in its entirety. Background Art

[0003] Unlike primary batteries, secondary batteries are rechargeable 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-type 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 power generation device including a stacked structure of electrodes and separators.

[0005] Since secondary batteries need 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 eventually lead to the worst situation 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 refrigerant 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 refrigerant 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 a person 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, a radiator assembly includes a plurality of radiators, the 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 through which a refrigerant flows, the first surface and the second surface at both ends in the length direction are open, the plurality of radiators having a connecting port on a side wall adjacent to the first surface and / or the second surface, wherein the plurality of radiators are formed as a whole by forming a joint surface on the side wall and matching the connecting port, and include a radiator module, the entire flow path of the radiator module is fluidly connected by the connecting port, the ribs of the radiator have a certain length, so that the two 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 radiator module are closed by a battery pack frame.

[0013] In one embodiment of the present disclosure, the battery pack frame is a pair of side frames, and the side frames are joined to both ends of the radiator module by welding.

[0014] The radiator module may include ports respectively connected to flow paths on outermost radiators on both sides in a width direction of the radiator module.

[0015] The port may be located in a space between the pack frame and the rib on the first surface or the second surface.

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

[0017] Furthermore, the ribs may be arranged such that the closer the positions of both ends are to the port or the communication opening, the farther the ribs are from the first surface or the second surface.

[0018] At the same time, the radiator assembly of the present invention may include multiple radiator modules, wherein the battery pack frame includes an intermediate frame and a side frame, and the first surface of any one radiator module and the second surface of another radiator module are joined to the intermediate frame and closed by the intermediate frame, and the first surface or the second surface of the two outermost radiator modules arranged in the length direction are joined to the side frame and closed by the side frame.

[0019] The plurality of radiator modules may be fluidly connected to each other to form an overall flow path.

[0020] For example, for multiple radiator modules, the outlet of any radiator module is connected to the inlet of another radiator module, and the ports closest to each other in two adjacent radiator modules can be selected as the inlet and the outlet.

[0021] Here, the two radiator modules may be fluidly connected via a pipe member connecting the inlet and the outlet.

[0022] Alternatively, the two radiator modules may be fluidly connected via a connection hole formed through the surface of each radiator module to communicate with the internal flow path, and a cross plate surrounding the connection hole and sealing the connection hole from the outside.

[0023] According to an embodiment, the connection hole and the cross plate may be provided on the bottom surface of the heat sink module.

[0024] Beneficial Effects

[0025] The radiator assembly of the embodiment of the present disclosure has the above-mentioned configuration. Since the radiator is manufactured as a continuous body through extrusion molding, it has excellent structural rigidity. At the same time, by processing the two ends and side walls of the ribs integrally formed in the radiator in the length direction, an internal flow path can be formed between the interconnected radiators, and a cooling channel is configured by closing the open surface of the end plug, and the cooling channel is divided into an inlet and an outlet.

[0026] Therefore, the radiator assembly of the embodiment of the present disclosure uses the extruded radiator as the basic frame (which has advantages in structural rigidity) and, because no separate pipes are required to form the flow path, occupies less space; by simplifying the flow path configuration, the number of components is reduced, thereby increasing the pressure difference; and by increasing the number of joined radiators, the heat dissipation area can be easily expanded.

[0027] However, the technical effects that can be obtained through the present disclosure are not limited to the above-mentioned effects, and a person of ordinary skill 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

[0028] Since the following drawings attached to this specification illustrate exemplary embodiments of the present disclosure and are used to facilitate understanding of the technical idea of ​​the present disclosure in conjunction with the specific embodiments of the present disclosure described below, the present disclosure should not be limitedly interpreted based on the drawings.

[0029] Figure 1 is a diagram illustrating a heat sink assembly according to one embodiment of the present disclosure.

[0030] Figure 2 is a partial perspective view showing the internal structure of the heat sink.

[0031] Figure 3 is a diagram showing a plurality of heat sinks joined together.

[0032] Figure 4 It shows Figure 1 Diagram of the refrigerant flow in the radiator assembly.

[0033] Figure 5 is a diagram showing one embodiment of a heat sink assembly including a middle frame.

[0034] Figure 6 yes Figure 5 Magnified view of section "A".

[0035] Figure 7 is a diagram showing another embodiment of a heat sink assembly including a middle frame.

[0036] Figure 8 yes Figure 7 An enlarged view of the bottom surface of part "B".

[0037] Fig. 9 yes Figure 8 Exploded three-dimensional diagram. DETAILED DESCRIPTION

[0038] The present disclosure may have various modifications and various embodiments, so specific embodiments thereof will be described in detail below.

[0039] 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.

[0040] 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 this 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 excluded in advance.

[0041] Furthermore, in the present disclosure, when a portion of a layer, film, region, plate, etc. is “disposed” “on” another portion, this includes not only a case where a portion is “directly disposed” “on” another portion, but also a case where another portion is interposed between the portion and the other portion. In contrast, when a portion of a layer, film, region, plate, etc. is “disposed” “below” another portion, this includes not only a case where a portion is “disposed “directly below” another portion, but also a case where another portion is interposed between the portion and the other portion. Furthermore, in the present application, “on” may include not only a case where it is disposed on an upper portion, but also a case where it is disposed on a lower portion.

[0042] 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 through which a refrigerant flows, the plurality of radiators having an open first surface and a second surface at both ends in the length direction and a connecting port on a side wall adjacent to the second surface, the plurality of radiators forming a radiator module, and the side wall forming a joint surface and matching the connecting port, wherein the entire flow path of the radiator module is fluidly connected by the connecting port, the ribs of the radiator having a certain length so that the two ends thereof are spaced apart from the first surface and the second surface by a predetermined distance, and the open first surface and the second surface at both ends of the radiator module are closed by a battery pack frame.

[0043] The radiator assembly of the embodiment of the present disclosure has the above-mentioned structure, wherein the radiator is manufactured as a continuous body by extrusion molding to have excellent structural rigidity, and at the same time, 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 interconnected radiators, and the end plug closes the surface of the opening to form a cooling channel, which is divided into an inlet and an outlet.

[0044] Therefore, the radiator assembly of the embodiment of the present disclosure uses the extruded radiator as the basic frame (which has advantages in structural rigidity) and, because no separate pipes are required to form a flow path, 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.

[0045] Hereinafter, with reference to the accompanying drawings, a specific embodiment of the radiator assembly 10 according to the present disclosure will be described in detail. As a reference, the front-rear, up-down, and left-right directions used to designate relative positions in the following description are for understanding the present disclosure, and unless otherwise specified, these directions refer to the directions shown in the drawings.

[0046] [First embodiment]

[0047] Figure 1 is a diagram showing a heat sink assembly according to an embodiment of the present disclosure, Figure 2 is a partial stereogram showing the internal structure of the radiator, Figure 3 is a diagram showing a plurality of heat sinks joined together. Figures 1 to 3 , the heat sink assembly 10 according to the embodiment of the present disclosure will be described in detail.

[0048] The heat sink assembly 10 of the present disclosure includes a heat sink module 100 and a battery pack frame 200, and the heat sink module 100 has a plurality of heat sinks 110 connected in a row. The open surfaces of each heat sink 110 or the heat sink module 100 are surfaces on both sides of the length direction L. For ease of description, the two open surfaces will be referred to as the first surface 116 and the second surface 118, respectively. Here, the length direction L is defined as referring to the extrusion molding direction of the heat sink 110, in other words, the direction in which the ribs 112 extend, and the width direction W is defined as referring to the direction along which the plurality of ribs 112 are spaced apart on a plane and is orthogonal to the length direction L.

[0049] All heat sinks 110 are manufactured to have a substantially identical structure. For example, each heat sink 110 can be manufactured as an extrusion by extrusion molding, and the extrusion has a plurality of ribs 112 integrally molded along the inner length direction L. A plurality of heat sinks 110 can be prepared by cutting the extrusions continuously manufactured by extrusion molding into suitable lengths. In each heat sink 110, the space between the spaced ribs 112 forms an internal flow path 114 for the refrigerant to flow through, and the first surface 116 and the second surface 118 located at both ends of the length direction L are open due to the characteristics of extrusion molding.

[0050] The plurality of radiators 110 are formed into one body by firmly joining one side wall of the plurality of radiators 110 to each other through a joining process (e.g., stir friction welding). The plurality of radiators 110 are joined successively in one direction (refer to the drawing, the width direction W), and the closed side wall (in other words, the joining surface 130) that joins the radiators 110 to each other is processed to form a connecting port 120 for all radiators 110 before joining. By providing the connecting port 120 on the joining surface 130, the flow paths 114 of all radiators 110 that form a radiator module 100 are fluidly connected to each other. In other words, all the flow paths 114 in the radiator module 100 are connected in series, in parallel, or in series-parallel mode to achieve continuous flow of the refrigerant.

[0051] Figure 2A structure is shown in which the communication port 120 is formed by cutting a predetermined length inward from the end portion of the side wall 118 located on the second surface. In other words, referring to the drawings, the communication port 120 is provided on one side wall adjacent to the second surface 118. Of course, the communication port 120 may be formed in the middle of the side wall, but in order to facilitate the flow of the refrigerant between the radiators 110, it may be desirable that the communication port 120 is located at the end portion of the side wall.

[0052] Referring to the entire heat sink module 100 , the communication ports 120 may be alternately disposed on the first surface 116 and the second surface 118 to form a zigzag shape. Figure 3 , adjacent communication ports 120 along the width direction W are located in a diagonal direction, so that the refrigerant flows uniformly through the entire radiator module 100. In other words, by arranging the communication ports 120 in a zigzag shape, the heat transfer area of ​​the radiator module 100 can be maximized.

[0053] According to the position of each heat sink 110 in the heat sink module 100, each heat sink 110 is provided with one or two communication ports 120. Figure 3 As shown, the number of communication ports 120 provided on the heat sink 110 corresponds to the number of adjacent heat sinks 110 joined thereto; therefore, the outermost heat sink 110 in the width direction W is provided with one communication port 120, and the heat sink 110 between the outermost heat sinks 110 in the width direction W is provided with two communication ports 120. When any heat sink 110 is provided with two communication ports 120, one of the two communication ports 120 is provided on the first surface 116, and one is provided on the second surface 118.

[0054] like Figure 3 As shown, the first surface 116 and the second surface 118 of the opening located at both ends of the radiator module 100 are joined with the battery pack frame 200, thereby sealing the radiator module 100. The battery pack frame 200 is a frame forming part of the battery pack housing in which the battery module or battery block is installed, and forms the mechanical structure of the battery pack housing to withstand various loads. The battery pack frame 200 is provided with a joint portion 202 having a thickness corresponding to the height of the radiator 110, and the joint portion 202 of the battery pack frame 200 is face-to-face joined with the first surface 116 and the second surface 118 of the radiator 110. By overlapping the welding depth of the adjacent joint portion 202 with the stir friction welding performed up and down on the radiator 110, the sealing of the first surface 116 and the second surface 118 in the up and down direction and the left and right direction can be completed.

[0055] The rib 112 of the heat sink 110 has a certain length so that both ends thereof are spaced apart from the first surface 116 and the second surface 118 by a predetermined distance. Therefore, a certain volume of space is formed between the battery pack frame 200 and the first surface 116 and the second surface 118. In other words, this space is formed by a processing process of cutting the end portions of the rib 112 accessible through the first surface 116 and the second surface 118 into a predetermined length and forming a common space communicating with each flow path 114 between the ribs 112.

[0056] In one embodiment of the present disclosure, the pack frame 200 is a pair of side frames 210 forming the outer surface of the pack case, and the side frames 210 are welded and joined to both ends of the opening of the radiator module 100 .

[0057] In addition, the heat sink module 100 may have a pair of ports 300 on the outermost heat sink 110 on both sides in the width direction W, and each port 300 is connected to the internal flow path 114. The pair of ports 300 constitute an inlet and an outlet for the refrigerant to flow in and out, in other words, one port 300 is an inlet 310, and the other port 300 is an outlet 320. The pair of ports 300 are located in the space between the battery pack frame 200 and the ribs 112 on the first surface 116 or the second surface 118, so that the refrigerant flowing in and out through the ports 300 can be provided to all the flow paths 114 through the inlet 310, and the refrigerant passing through all the flow paths 114 is gathered and discharged through the outlet 320.

[0058] Figure 4 It shows Figure 1 FIG. 1 is a diagram of the flow of refrigerant in the heat sink assembly 10. The refrigerant entering the inlet 310 flows through the heat sink 110 one by one along the width direction W and flows through the outlet 320. The adjacent communication ports 120 are arranged in a zigzag shape, and the pair of ports 300 are also located in a diagonal direction relative to the communication ports 120, so that the refrigerant can flow evenly through the entire heat sink module 100.

[0059] In addition, if Figure 3 and Figure 4 As shown, although the total length of each rib 112 is almost the same, the points at the two ends of each rib 112 can be formed differently; in other words, the positions of the two ends of the rib 112 can be arranged as follows: the farther away from the first surface 116 or the second surface 118, the closer it is to the port 300 or the communication port 120 through which the refrigerant flows in from the outside or flows out from the inside. This promotes the smooth flow of the refrigerant by providing a large amount of space for the area where the refrigerant gathers and flows in and out. This change in the structure of the rib 112 is produced by adjusting the processing depth of the cutting tool through the first surface 116 and the second surface 118.

[0060] [Second embodiment]

[0061] Figure 5 2 is a diagram showing one embodiment of a heat sink assembly 10 including a middle frame 220 . Figure 5 The embodiment of the present invention describes the case where the radiator module 100 includes a plurality of radiator modules. Although the drawings show the case where the radiator module 100 includes two radiator modules, it will be easily understood that by increasing the number of the intermediate frames 220, the radiator assembly 10 can be configured with three or more radiator modules 100.

[0062] Reference Figure 5 , the radiator assembly 10 includes two radiator modules 100. The battery pack frame 200 includes a middle frame 220 and a side frame 210, wherein the middle frame 220 refers to the battery pack frame 200 that crosses the inside of the radiator assembly 10. In contrast, the side frame 210 is the battery pack frame 200 that forms the outside of the radiator assembly 10.

[0063] Among the two radiator modules 100, one radiator module 100 is closed by combining its first surface 116 with the middle frame 220, and the other radiator module 100 is closed by combining its second surface 118 with the middle frame 220. In other words, the radiator modules 100 are joined one by one on both sides of the length direction L with the middle frame 220 as the center. At the same time, the second surface 118 and the first surface 116 of each radiator module 100 located at the outermost side relative to the length direction L are joined and closed with the side frame 210. By applying the middle frame 220, the radiator assembly 10 extending in the length direction L has good load-bearing capacity in structure.

[0064] Furthermore, although the plurality of radiator modules 100 may include independent refrigerant flow paths 114 , the plurality of radiator modules 100 may be fluidly connected to each other so that the entire flow paths 114 are connected to each other to improve space utilization by reducing the number of pipes used to form the flow paths 114 .

[0065] Figure 6 yes Figure 5 FIG. 1 is an enlarged view of the “A” portion of FIG. 1 , wherein two radiator modules 100 are fluidly connected via a pipe member 330 connecting an inlet 310 and an outlet 320. In other words, the outlet 320 of one radiator module 100 is connected to the inlet 310 of another radiator module 100, thereby interconnecting their respective internal flow paths 114. Therefore, the number of ports 300 of the entire radiator assembly 10 is substantially maintained at two, i.e., one inlet 310 and one outlet 320.

[0066] When fluidly connecting two radiator modules 100, it may be desirable to shorten the duct member 330 to improve pressure difference and save space. Therefore, the inlet 310 and outlet 320 interconnected by the duct member 330 can be selected as the ports 300 on two adjacent radiator modules 100 that are closest to each other.

[0067] [Third embodiment]

[0068] Figure 7 FIG. 2 is a diagram showing another embodiment of a heat sink assembly 10 including an intermediate frame 220. Figure 5 and Figure 6 The difference of the second embodiment described is the structure of fluidly connecting two radiator modules 100. Therefore, the third embodiment will be described centering on this fluidly connecting structure, and the configuration omitted due to redundancy will refer to the second embodiment.

[0069] Figure 7 The heat sink assembly 10 does not show a structure for fluidly connecting the two heat sink modules 100 because the fluid connection structure is provided on the bottom surface of the heat sink assembly 10. Of course, the fluid connection structure of the third embodiment can be provided on the upper surface, but from the perspective of maximizing the battery installation space, avoiding interference, and protecting it from external influences, it may be desirable to hide the fluid connection structure at the bottom.

[0070] Figure 8 yes Figure 7 An enlarged view of the bottom surface of portion "B" is shown. Fig. 9 yes Figure 8 Exploded three-dimensional diagram. Figure 8 and Fig. 9 As shown, the two radiator modules 100 include a connection hole 140 and a horizontal plate 340, the connection hole 140 is formed to penetrate the surface of each radiator module 100 to communicate with the internal flow path 114, and the horizontal plate 340 surrounds the connection hole 140 and seals it from the outside. As described above, the connection hole 140 and the horizontal plate 340 are provided on the bottom surface of the radiator module 100.

[0071] The flow path 114 of each radiator module 100 is exposed to the outside through the connection hole 140 penetrating the machined surface, but the refrigerant flowing into and out of the connection hole 140 is sealed by the cross plate 340, which surrounds the connection hole 140 and seals it relative to the outside. The cross plate 340 is welded along its edge relative to the middle frame 220 and the radiator module 100. The cross plate 340 shown has a concave-convex structure 342 consistent with the direction in which the refrigerant passes. The mechanical strength of the cross plate 340 is improved by the concave-convex structure 342, and the welding strength can also be improved by performing additional welding along the concave surface 344 of the concave-convex structure 342.

[0072] 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 the embodiments described herein are only one embodiment of the present disclosure and do 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.

[0073] [Explanation of Reference Numerals]

[0074] 10: Radiator assembly

[0075] 100: Radiator module

[0076] 110: Radiator

[0077] 112: Rib

[0078] 114: Flow path

[0079] 116: First Surface

[0080] 118: Second Surface

[0081] 120: Connecting port

[0082] 130: Joint surface

[0083] 140: Connection hole

[0084] 200: Battery Pack Frame

[0085] 202: Joint

[0086] 210: Side frame

[0087] 220: Middle frame

[0088] 300: Port

[0089] 310: Entrance

[0090] 320: Exit

[0091] 330: Pipeline components

[0092] 340: Horizontal board

[0093] 342: Concave and convex structure

[0094] 344: Concave

[0095] L: length direction

[0096] W: Width direction

Claims

1. A radiator assembly, comprising a plurality of radiators, wherein the radiators have a plurality of ribs integrally formed along an inner length direction by extrusion molding, wherein spaces between the ribs form a flow path for a refrigerant to flow, wherein a first surface and a second surface at both ends of the length direction are open, and wherein the plurality of radiators have a communication port on a side wall adjacent to the first surface and / or the second surface, in, The plurality of heat sinks are integrated by forming the side walls into joint surfaces and matching the communication ports, and include a heat sink module. The entire flow path of the radiator module is fluidically connected to the communication port, The rib of the 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 and second surfaces of the openings at both ends of the radiator module are closed by a battery pack frame.

2. The heat sink assembly according to claim 1, wherein: The battery pack frame is a pair of side frames joined to the both ends of the radiator module by welding.

3. The heat sink assembly according to claim 1, wherein: The radiator module includes ports connected to flow paths on outermost radiators on both sides in a width direction of the radiator module, respectively.

4. The heat sink assembly according to claim 3, wherein: The port is located in a space between the pack frame and a rib on the first surface or the second surface.

5. The heat sink assembly according to claim 4, wherein: The port is located in a diagonal direction with respect to the communication opening.

6. The heat sink assembly according to claim 5, wherein: The ribs are arranged such that the closer the positions of both ends are to the port or the communication port, the farther the ribs are from the first surface or the second surface.

7. The heat sink assembly according to claim 1, comprising a plurality of heat sink modules, in, The battery pack frame includes a middle frame and a side frame, and A first surface of any one radiator module and a second surface of another radiator module are combined with the intermediate frame and are closed by the intermediate frame, and The first surfaces or the second surfaces of two radiator modules disposed outermost in the length direction are engaged with the side frame and are closed by the side frame.

8. The heat sink assembly according to claim 7, wherein: The plurality of radiator modules are fluidly connected to each other to form an entire flow path.

9. The heat sink assembly according to claim 8, wherein: In the plurality of heat sink modules, The outlet of any radiator module is connected to the inlet of another radiator module, and The inlet and the outlet are ports that are closest to each other in two adjacent radiator modules.

10. The heat sink assembly according to claim 9, wherein: The two radiator modules are fluidly connected by a pipe member connecting the inlet and the outlet.

11. The heat sink assembly according to claim 9, wherein: The two radiator modules are fluidly connected through a connection hole formed through a surface of each radiator module to communicate with an internal flow path and a transverse plate surrounding the connection hole and sealing the connection hole from the outside.

12. The heat sink assembly according to claim 11, wherein: The connection hole and the transverse plate are disposed on a bottom surface of the radiator module.

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