Cooling device and battery pack including the same

Abstract

The present invention relates to a cooling device for cooling a battery cell stack assembly inside a battery pack using a cooling fluid supplied from a coolant storage unit, and a battery pack comprising the same. Specifically, the cooling device of the present invention comprises: a heat sink comprising a plurality of cooling channels; and a duct assembly coupled to the heat sink to enable fluid to enter and exit the cooling channels, where the duct assembly includes: a plurality of connectors coupled to each of the cooling channels and formed in a hollow shape, enabling a cooling fluid to pass through the plurality of connectors; and a connection duct connecting each of the connectors, in which the connector includes: a main port connected to the coolant storage unit; and a plurality of sub-ports connected to the main port via the connecting pipe, in which the main port includes: a first pipe communicating the coolant storage unit with the connecting pipe; and a second duct branched from the first duct and connected to a cooling passage.

Description

Technical Field

[0001] The present invention relates to a cooling device having improved process efficiency and improved cooling performance by applying a connector having a modified structure, and to a battery pack including the cooling device.

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2023-0088787, filed on Jul. 10, 2023, the disclosure of which is incorporated herein by reference in its entirety. Background Art

[0003] Unlike primary batteries, secondary batteries can be charged and discharged many times. Secondary batteries are widely used as energy sources for various wireless devices such as portable phones, laptop computers, and cordless vacuum cleaners. Secondary batteries are also attracting attention as energy sources for electric vehicles and hybrid vehicles, which are proposed as a means to solve air pollution from conventional gasoline vehicles and diesel vehicles using fossil fuels. Therefore, due to the advantages of secondary batteries, the types of applications using secondary batteries are diversified, and secondary batteries are expected to be applied to more fields and products in the future.

[0004] The battery module includes a plurality of battery cells connected in series or in parallel to each other to form a battery cell stack, thereby increasing capacity and power output. In addition, a battery pack may be constructed by connecting these battery modules in series / parallel and including a cooling device to appropriately manage their temperature.

[0005] Figure 1 A conventional battery pack 10 with a cooling device is shown. Figure 2 The pipe assembly 20 in the cooling device is shown, and Figure 3 yes Figure 1 A front view of a portion of a battery pack 10 is shown.

[0006] The battery pack 10 includes a heat sink 30 (not shown) that supports a lower portion of a battery module (not shown); a side wall 40 that is coupled to the heat sink 30 to support a side portion of the battery module that is placed on the heat sink 30; and an upper case 50 that is coupled to the side wall 40 to cover an upper portion of the battery module so as to protect it from external impacts, etc.

[0007] A cooling channel is provided inside the radiator 30, through which a cooling fluid can flow, and the cooling fluid can flow through the cooling channel. Figure 2 The pipe assembly 20 is injected into the cooling channel inside the radiator 30 .

[0008] The conventional pipe assembly 20 includes a main port 60 through which the external cooling fluid is first introduced, such as Figure 2and a plurality of ports connected to the main port 60 via a pipe 80. Here, each of the pipes is then connected to a corresponding cooling channel of the radiator 30, thereby guiding the cooling fluid traveling through the pipe 80 into the corresponding cooling channel.

[0009] However, when applying a clamp shape to the clamp ports in order to secure each of the ports to the cooling channel of the heat sink 30, there is usually structural interference between the clamp shape of the main port 60 and the clamp shape of the port located adjacent to the main port 60, such as Figure 1 and Figure 3 That is, due to the retainer structure of the port adjacent to the main port 60, it is difficult to assemble the pipe assembly 20.

[0010] Figure 4 The shape of the proposed battery pack 10 for solving the above-mentioned interference problem is shown, wherein the main port 60 is repositioned to eliminate interference with the holder shape of other adjacent ports.

[0011] Figure 5 Shows Figure 4 The battery pack 10 includes a pipe assembly 20, and Figure 6 yes Figure 4 A front view of a portion of a battery pack 10 is shown.

[0012] refer to Figure 5 and Figure 6 It can be seen that the interference problem can be solved by designing the height of the main port 60 to be higher than other ports.

[0013] However, the disadvantage of the pipe assembly 20 of this construction is that it requires more parts than conventionally used to connect the main port 60 with other ports. Figure 7 Shows the composition Figure 6 Representative parts of the Pipe 80 assembly. Figures 5 to 7 , it can be seen that an additional non-conventional deformable conduit 90 has been added to connect the relocated main port 60 to the other ports.

[0014] [Patent Document] Korean registered patent No. 10-2449082 Summary of the invention

[0015] [Technical issues]

[0016] Therefore, an object of the present invention is to solve the above-mentioned problems and to provide a cooling device with minimal interference between various structures.

[0017] Another object of the present invention is to provide a cooling device and a battery pack including the same without impairing cooling performance.

[0018] Other objects and advantages of the present invention will be understood from the following description and will become more apparent from the embodiments of the present invention. It will also be apparent that the objects and advantages of the present invention can be achieved by the means disclosed in the patent claims and their combinations.

[0019] [Technical solution]

[0020] According to the present invention, there is provided a cooling device, which comprises: a radiator, which comprises a plurality of cooling channels; and a pipe assembly, which is connected to the radiator to allow fluid to enter and leave the cooling channels, wherein the pipe assembly comprises: a plurality of connectors, which are connected to each of the cooling channels and are formed as a hollow type to allow cooling fluid to pass through the plurality of connectors; and a connecting pipe, which connects each of the connectors, wherein the connector comprises: a main port, which is connected to a coolant storage portion; and a plurality of sub-ports, which are connected via the main port and the connecting pipe, wherein the main port comprises: a first pipe, which communicates with the coolant storage portion and the connecting pipe; and a second pipe, which branches from the first pipe and is connected to the cooling channel.

[0021] The first pipe may include: a main pipe portion, wherein either end of the main pipe portion is closed; and a sub-pipe portion connected to a side portion of the main pipe portion.

[0022] The sub-pipe portion may be vertically connected to the main pipe portion.

[0023] The second pipe may be connected to a sub-pipe portion of the first pipe.

[0024] A plurality of sub-pipe sections may be connected to the main pipe section.

[0025] Each of the sub-pipe portions may be connected to be spaced apart by a predetermined distance in a longitudinal direction of the main pipe portion.

[0026] The main port may further include an engaging portion in a snap-fit ​​structure protruding from the second pipe so that the second pipe is coupled to the radiator.

[0027] The engagement portions may be formed as symmetrical pairs on the second pipe.

[0028] The radiator includes a pipe-shaped coupling port coupled to each cooling channel inlet, the coupling port includes a protrusion, an engaging portion of the second pipe is engaged on the protrusion, and the second pipe can be fastened to the coupling port by engagement of the engaging portion and the protrusion.

[0029] When the engaging portion is lifted from the protruding portion, the second pipe may be separated from the coupling port.

[0030] The connector may comprise plastic material and may be manufactured in one piece by injection moulding.

[0031] The subport includes: a moving pipe in a pipe shape; an injection pipe, the injection pipe is branched from the moving pipe and connected to the cooling channel, wherein both ends of the moving pipe are respectively connected to the connecting pipe.

[0032] The subport may further include an engaging portion in a snap-fit ​​structure protruding from the injection portion so that the injection portion is coupled to the heat sink.

[0033] According to the present invention, a battery pack is provided, which includes: a radiator, wherein a plurality of battery cell stack assemblies are arranged on the upper portion of the radiator; a pipe assembly, which is connected to at least one of the front end and the rear end of the radiator; and a side wall, which is connected along the periphery of the radiator to support the side of the battery cell stack assembly.

[0034] [Beneficial Effects]

[0035] According to the present invention, it is possible to improve the efficiency of a process for manufacturing a cooling device and a battery pack including the same.

[0036] Furthermore, according to the present invention, the safety of a battery pack including the cooling device can be improved by applying the cooling device without impairing the cooling performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A conventional battery pack with a cooling device is shown.

[0038] Figure 2 Shows Figure 1 A piping assembly included in a cooling device.

[0039] Figure 3 yes Figure 1 A front view of a portion of a battery pack.

[0040] Figure 4 A conventional battery pack with a modified form of cooling arrangement is shown.

[0041] Figure 5 Shows Figure 4 A piping assembly included in a cooling device.

[0042] Figure 6 yes Figure 4 A front view of a portion of a battery pack.

[0043] Figure 7 yes Figure 5 An isolated view of the pipeline component construction.

[0044] Figure 8 is a perspective view of a cooling device according to a first embodiment of the present invention.

[0045] Fig. 9 A portion of a pipeline assembly is shown.

[0046] Fig.10 It is composed Fig. 9 An isolated view of the various parts of a piping assembly.

[0047] Fig.11 The subport included in the cooling device of the present invention is shown.

[0048] Fig.12 The arrangement of a portion of the main and sub-ports, the coupling ports and the heat sink is shown.

[0049] Fig.13 is a cross-sectional view of a process of coupling a sub-port and a main port to a coupling port, which is coupled to a heat sink.

[0050] Fig.14 1 and 2 are perspective, top, side and front views of the main port of the present invention.

[0051] Fig.15 is a perspective view of a battery pack to which a cooling device according to a first embodiment of the present invention is applied.

[0052] Fig.16 is a perspective view of a cooling device according to a second embodiment of the present invention.

[0053] Fig.17 are a perspective view, a top view, a side view, and a front view of a main port included in a cooling device according to a second embodiment of the present invention.

[0054] Fig.18 is a perspective view of a battery pack to which a cooling device according to a second embodiment of the present invention is applied. DETAILED DESCRIPTION

[0055] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, it should be noted that the terms or words used in this specification and claims should not be interpreted in their ordinary or dictionary meanings, but rather in accordance with the meanings and concepts of the technical concept of the present invention based on the principle that the inventor can appropriately define the concepts of the terms to best describe his / her invention.

[0056] Therefore, it should be understood that the embodiments described herein and the configurations shown in the drawings are only the most preferred embodiments of the present invention and are not intended to exhaust the technical concepts of the present invention, and that various equivalents and modifications that may replace them may exist at the time of filing.

[0057] Furthermore, in describing the present invention, when it is determined that the detailed description of the related known constructions or features will obscure the essence of the present invention, the detailed description of the related known constructions or features is omitted.

[0058] Since the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art, the shapes and sizes of the components in the drawings may be exaggerated, omitted or schematically shown for the sake of clarity. Therefore, the size or ratio of each component does not necessarily indicate its actual size or ratio.

[0059] The present invention relates to a cooling device having improved process efficiency and improved cooling performance by applying a connector having a modified structure, and to a battery pack including the cooling device.

[0060] Figures 8 to 15 It relates to a cooling device according to a first embodiment of the present invention and a battery pack including the cooling device, and Figures 16 to 18 The present invention relates to a cooling device according to a second embodiment of the present invention and a battery pack including the cooling device.

[0061] Hereinafter, a cooling device and a battery pack of the present invention will be described with reference to the following drawings.

[0062] (First embodiment)

[0063] Cooling device 100

[0064] The present invention relates to a cooling device 100 for cooling battery cells inside a battery pack using a cooling fluid F supplied from a coolant storage (not shown).

[0065] The coolant storage part is used to store the fluid and supply the stored fluid to the outside as needed. In this case, the fluid can be cooled in the coolant storage part, or can be cooled by a separate device or the like after it leaves the coolant storage part.

[0066] Figure 8is a perspective view of a cooling device 100 according to a first embodiment of the present invention.

[0067] The cooling device 100 includes a radiator 110 and a pipe assembly 120. Figure 8 shown.

[0068] The heat sink 110 has a flat plate shape and includes a plurality of cooling channels 111 therein.

[0069] The cooling channel 111 is a passage through which the cooling fluid F flows, and may be designed in at least one of a straight shape and a curved shape.

[0070] The cooling passage 111 is preferably designed to pass through as much area as possible in the heat sink 110 .

[0071] The duct assembly 120 is coupled to the radiator 110 to allow fluid to enter and exit the cooling passages 111 of the radiator 110 .

[0072] The pipe assembly 120 may be coupled to any one of the front end and the rear end of the radiator 110, or may be coupled to the front end and the rear end of the radiator 110, respectively. Figure 8 This can be freely changed according to the design of the cooling channel 111 in the heat sink 110.

[0073] The cooling fluid F supplied from the coolant storage part travels to the radiator 110 through the pipe assembly 120 provided at one end of the radiator 110. After passing through the radiator 110, the cooling fluid F may travel to another pipe assembly 120 provided at the other end of the radiator 110, or may return to the pipe assembly 120 provided at one end of the radiator 110.

[0074] As described above, the migration path of the cooling fluid F can be freely changed according to the designer's purpose.

[0075] Fig. 9 is a diagram of a portion of a pipeline assembly 120, and Fig.10 It is composed Fig. 9 0026 is an isolated view of the various parts of the pipe assembly 120 .

[0076] The pipe assembly 120 includes a connector and a connecting pipe 123 .

[0077] The connector is hollowly formed to allow a fluid to pass therethrough, and is coupled to each cooling channel 111 of the radiator 110 .

[0078] The connector includes a main port 121 and a sub-port 122. Fig. 9 and Fig.10 shown.

[0079] The main port 121 is a configuration of the pipe assembly 120 through which the cooling fluid F supplied from the coolant storage portion first passes.

[0080] The main port 121 may be directly connected to the coolant storage, or may be connected to the coolant storage via a separate pipe (not shown).

[0081] The sub-port 122 introduces the cooling fluid F moved from the main port 121 into each cooling channel 111 of the heat sink 110 , or alternatively moves the cooling fluid F to another sub-port 122 .

[0082] The subport 122 includes a connection portion 122 b coupled to the connection pipe 123 and an injection portion 122 a coupled to the connection portion 122 b and to the radiator 110 .

[0083] Fig.11 The subport 122 included in the cooling device 100 of the present invention is shown.

[0084] like Fig.11 As shown, the sub-port 122 is constructed in two types according to the number of connecting pipes 123 connected to the sub-port 122 .

[0085] Fig.11 (a) shows that the connection portion 122b is formed on both sides of the injection portion 122a, so that the cooling fluid F can pass through the connection portion 122b to reach another sub-port 122, and can also flow through the injection portion 122a communicating with the connection portion 122b and enter the cooling channel 111 of the radiator 110 connected to the sub-port 122.

[0086] exist Fig.11 In (b), the connection portion 122 b is formed at one side of the injection portion 122 a , and the cooling fluid F introduced through the connection portion 122 b directly flows into the cooling channel 111 through the injection portion 122 a .

[0087] Subport 122 can be from Fig.11 Either one of (a) and (b) is selected, depending on where the subport 122 is set.

[0088] like Fig. 9 As shown, when the sub-port 122 is arranged at the outermost position in the direction opposite to the main port 121, it can be used Fig.11 The subport 122 of the form (b) is shown.

[0089] The subport 122 includes an engaging portion S of a snap-fit ​​structure on an outer peripheral surface of the injection portion 122 a .

[0090] The joint portions S are provided in pairs symmetrically with respect to the injection portion 122 a.

[0091] By manipulating the joint portion S, the subport 122 may be fixed to the heat sink 110 .

[0092] The subport 122 preferably includes a plastic material so that the engaging portion S can freely move. That is, the subport 122 including the plastic material can be integrally manufactured by injection molding or the like.

[0093] The cooling device 100 of the present invention also includes a protruding shape in which the subport 122 and a part connected to the subport 122 can be engaged and fastened to the engaging portion S. Therefore, the subport 122 utilizes the elasticity of plastic, thereby allowing the engaging portion S to be engaged on the protruding shape even under a slight thrust without requiring a special bolt connection.

[0094] In order to disengage the sub-port 122 from the connected part, it is necessary to lift the front end of the engaging portion S so that the engaging portion S is not stuck on the protruding shape. Therefore, the sub-port 122 may also include a manipulation portion H protruding on the outer side of the engaging portion S to manually manipulate the movement of the engaging portion S, and the operation of pressing the manipulation portion H may simply disengage the sub-port 122 from the connected part.

[0095] The sub-port 122 may be directly coupled to the heat sink 110 , or may be coupled to the heat sink 110 using the coupling port 112 .

[0096] Fig.12 The arrangement of a portion of the main port 121 and the sub-port 122 and a portion of the coupling port 112 and the heat sink 110 is shown.

[0097] At the entrance of the cooling channel 111, a pipe-shaped connection port 112 may be first connected and fixed, such as Fig.12 As shown, the sub-port 122 may then be coupled at the end of the fixed coupling port 112. In this case, the coupling port 112 may include a thread on the outer peripheral surface of one end, and a thread corresponding to the thread of the coupling port 112 may be formed on the inner peripheral surface of the inlet of the cooling channel 111 of the radiator 110, and the coupling port 112 is inserted into the inlet of the cooling channel 111. In other words, the coupling port 112 may be threadedly connected and fixed to the female thread formed on the radiator 110.

[0098] Fig.13 is a cross-sectional view of a process of coupling the sub-port 122 and the main port 121 to the coupling port 112 coupled to the radiator 110 .

[0099] according to Fig.12and Fig.13 , the coupling port 112 may include a protrusion 112a on its outer peripheral surface so that the engaging portion S can be engaged. Therefore, the sub-port 122 moving toward the coupling port 112 is fixed to the coupling port 112 and the radiator 110 at the moment when the engaging portion S is engaged on the protrusion 112a. Subsequently, the cooling fluid F supplied from the sub-port 122 can be injected into the cooling channel 111 through the coupling port 112.

[0100] The connecting pipe 123 is between the connectors, such as Figures 8 to 10 shown.

[0101] * The connecting pipe 123 is designed in a pipe shape and connected between each connector so that the cooling fluid F can reach all the connectors.

[0102] The cooling device 100 of the present invention is characterized by a modification of the geometry of the conventional main port 121. In particular, the cooling device 100 of the present invention is characterized by a modification of the shape of the main port 121 so that it is directly coupled to the radiator 110 while being connected to other sub-ports 122. In other words, the main port 121 includes three inlets for the cooling fluid F to enter and leave, and is coupled to the radiator 110 so that any of these inlets communicates with the cooling channel 111.

[0103] Therefore, the cooling fluid F passing through the main port 121 may directly flow into the cooling channel 111 of the radiator 110 connected to the main port 121 , or may flow to the sub-port 122 .

[0104] Fig.14 A perspective view of the main port 121 of the present invention is shown ( Fig.14 (a) and top view ( Fig.14 (b) and side view ( Fig.14 (c)) and front view ( Fig.14 (d)).

[0105] The main port 121 includes a first pipe having a structure connecting the coolant storage part and the connection pipe 123 , and a second pipe 121 b branched from the first pipe and connected to the cooling channel 111 .

[0106] More specifically, the first pipe includes a main pipe portion 121a1 and a sub-pipe portion 121a2.

[0107] The main duct portion 121a1 is hollow and has a closed shape at one of its ends.

[0108] The sub duct portion 121a2 is formed to be connected to a side portion of the main duct portion 121a1.

[0109] The sub-pipe portion 121a2 is used to change the moving direction of the cooling fluid F introduced through the open end of the main pipe portion 121a1. That is, the cooling fluid F traveling along the longitudinal direction of the main pipe portion 121a1 flows into the sub-pipe portion 121a2 connected to the side of the main pipe portion 121a1 when it reaches the closed end of the main pipe portion 121a1, and changes the moving direction to the longitudinal direction of the sub-pipe portion 121a2.

[0110] The sub-pipe portion 121a2 is preferably connected perpendicularly to the main pipe portion 121a1. Therefore, the cooling fluid F traveling through the first pipe switches its moving direction as it moves from the main pipe portion 121a1 to the sub-pipe portion 121a2, wherein the moving direction is switched nearly perpendicularly.

[0111] Preferably, the main port 121 is configured such that both the first conduit and the second conduit 121 b are at right angles to the direction of gravity.

[0112] The main port 121 includes a second pipe 121 b connected to a side of the sub-pipe portion 121 a 2 to communicate with the sub-pipe portion 121 a 2 .

[0113] The second pipe 121b is used to allow the cooling fluid F flowing in from the main pipe portion 121a1 to flow out in a direction other than the sub-pipe portion 121a2. That is, the cooling fluid F flowing in through one channel of the main pipe portion 121a1 can flow out through two channels (sub-pipe portion 121a2 and second pipe 121b).

[0114] The second duct 121b is preferably formed perpendicular to the sub-duct portion 121a2.

[0115] The second pipe 121 b has a similar structure and the same material as some of the sub-ports 122 , in part because the second pipe 121 b plays the same role as other sub-ports 122 connected to the cooling channel 111 of the radiator 110 .

[0116] That is, the main port 121 further includes an engaging portion of a snap-fit ​​structure on the second pipe 121 b so that the second pipe 121 b is coupled to the radiator 110 .

[0117] The radiator 110 further includes a pipe-shaped coupling port 112 at the inlet of the cooling channel 111 to which the second pipe 121 b of the main port 121 is coupled.

[0118] The coupling port 112 includes a protrusion 112 a so that the engaging portion S of the second pipe 121 b is engaged.

[0119] The engaging portions S are formed as a symmetrical pair on the second pipe 121 b , and the pair of engaging portions S are engaged on the protrusion 112 a of the coupling port 112 coupled to the inlet of the cooling channel 111 to fasten the main port 121 to the radiator 110 .

[0120] When the engaging portion S is lifted from the protrusion 112 a , the second pipe 121 b of the main port 121 may be separated from the coupling port 112 , just as the sub-port 122 may be separated from the coupling port 112 .

[0121] The main port 121 includes a manipulation portion H protruding from one side of the joint portion S, for manipulating the operation of the joint portion S, such as Fig.14 Therefore, by pressing the operating portion H, the engaging portion S can be operated.

[0122] As described above, the main port 121 included in the cooling device 100 of the present invention can be stably fixed to the radiator 110 by configuring the second pipe 121b directly coupled to the radiator 110. In addition, the second pipe 121b configuration as described above solves problems such as interference with other sub-ports 122.

[0123] Battery Pack

[0124] The battery pack of the present invention that accommodates a plurality of battery cell stack assemblies is characterized in that the cooling device 100 of the present invention is applied.

[0125] Fig.15 is a perspective view of a battery pack having a cooling device 100 according to a first embodiment of the present invention.

[0126] The battery pack includes a radiator 110, a pipe assembly 120 and a side wall, a plurality of battery cell stack assemblies are arranged on the upper portion of the radiator 110, the pipe assembly 120 is connected to at least one of the front end and the rear end of the radiator 110, and the side wall is connected along the periphery of the radiator 110 to support the side of the battery cell stack assembly.

[0127] The battery pack may further include an upper case coupled to the upper end of the side wall to cover and protect the upper portion of the battery cell stack assembly. Fig.15 shown.

[0128] Since the cooling fluid F is injected into the radiator 110 through the cooling device 100 and travels, the plurality of battery cell stack assemblies accommodated in the battery pack may be cooled in real time.

[0129] (Second embodiment)

[0130] Cooling device 100

[0131] The cooling device 100 according to the second embodiment of the present invention is characterized in that the main port 121 includes a plurality of sub-duct portions 121 a 2 .

[0132] Fig.16 is a perspective view of a cooling device 100 according to a second embodiment of the present invention.

[0133] The cooling device 100 includes a radiator 110 and a pipe assembly 120. Fig.16 shown.

[0134] Fig.17 1 is a perspective view showing a main port 121 included in a cooling device 100 according to a second embodiment of the present invention ( Fig.17 (a) and top view ( Fig.17 (b)), side view ( Fig.17 (c)) and front view ( Fig.17 (d)).

[0135] The main port 121 includes a first pipe having a structure connecting the coolant storage part and the connection pipe 123 , and a second pipe 121 b branched from the first pipe and connected to the cooling channel 111 .

[0136] More specifically, the first pipe includes a main pipe portion 121a1 and a plurality of sub-pipe portions 121a2.

[0137] The main duct portion 121a1 is hollow and has a closed shape at one of its ends.

[0138] The sub-pipe portion 121a2 is formed to be connected to the side portion of the main pipe portion 121a1. More specifically, as Fig.17 As shown, each of the sub-duct portions 121a2 is connected to be spaced apart by a predetermined distance along the longitudinal direction of the main duct portion 121a1.

[0139] The sub-pipe portion 121a2 is used to change the moving direction of the cooling fluid F introduced through the open end of the main pipe portion 121a1. That is, the cooling fluid F traveling along the longitudinal direction of the main pipe portion 121a1 flows into each sub-pipe portion 121a2 connected to the side of the main pipe portion 121a1 when it reaches the closed end of the main pipe portion 121a1, and changes the moving direction to the longitudinal direction of each sub-pipe portion 121a2.

[0140] Since each sub-pipe portion 121a2 preferably extends in the same direction, the movement direction of the cooling fluid F through each sub-pipe portion 121a2 is also the same.

[0141] Each sub-pipe portion 121a2 is preferably connected to be perpendicular to the main pipe portion 121a1. Therefore, when the cooling fluid F traveling through the first pipe moves from the main pipe portion 121a1 to the sub-pipe portion 121a2, the cooling fluid F switches its moving direction nearly vertically.

[0142] Preferably, the main port 121 is configured such that both the first conduit and the second conduit 121 b are at right angles to the direction of gravity.

[0143] The second duct 121 b of the main port 121 included in the cooling device 100 according to the second embodiment is connected to the sub-duct portion 121 a 2 disposed at a position closest to the end of the main port 121 among the plurality of sub-duct portions 121 a 2 .

[0144] The second pipe 121b is used to allow the cooling fluid F flowing in from the main pipe portion 121a1 to flow out in a direction other than the sub-pipe portion 121a2. That is, the cooling fluid F flowing in through one channel of the main pipe portion 121a1 can flow out through multiple channels (sub-pipe portion 121a2 and second pipe 121b).

[0145] The second duct 121b is preferably formed perpendicular to the sub-duct portion 121a2.

[0146] The second pipe 121 b has a similar structure and the same material as some of the sub-ports 122 , in part because the second pipe 121 b plays the same role as other sub-ports 122 connected to the cooling channel 111 of the radiator 110 .

[0147] That is, the main port 121 further includes an engaging portion of a snap-fit ​​structure on the second pipe 121 b so that the second pipe 121 b is coupled to the radiator 110 .

[0148] The radiator 110 further includes a pipe-shaped coupling port 112 at the inlet of the cooling channel 111 to which the second pipe 121 b of the main port 121 is coupled.

[0149] The coupling port 112 includes a protrusion 112 a which protrudes so that the engaging portion S of the second pipe 121 b is engaged.

[0150] The engaging portions S are formed as a symmetrical pair on the second pipe 121 b , and the pair of engaging portions S are engaged on the protrusion 112 a of the coupling port 112 coupled to the inlet of the cooling channel 111 to fasten the main port 121 to the radiator 110 .

[0151] When the engaging portion S is lifted from the protrusion 112 a , the second pipe 121 b of the main port 121 may be separated from the coupling port 112 , just as the sub-port 122 may be separated from the coupling port 112 .

[0152] The main port 121 includes a manipulation portion H protruding from one side of the joint portion S for manipulating the operation of the joint portion S. Therefore, by pressing the manipulation portion H, the joint portion S can be operated.

[0153] The sub-ports 122 included in the cooling device 100 according to the second embodiment are different from those of the first embodiment in that not all of the sub-ports 122 are connected through the connecting pipes 123. That is, the plurality of sub-ports 122 are divided into several pairs, such as Fig.16 Here, the sub-ports 122 connected to each other by the connecting pipe 123 are connected to form a group, and any one of the sub-ports 122 belonging to the group is directly connected to the main port 121 via the connecting pipe 123. Therefore, the cooling device 100 according to the second embodiment can deliver the cooling fluid F to a larger area of ​​the radiator 110 at a higher speed than the cooling device 100 according to the first embodiment.

[0154] Battery Pack

[0155] The battery pack of the present invention that accommodates a plurality of battery cell stack assemblies is characterized in that the cooling device 100 of the present invention is applied.

[0156] Fig.18 is a perspective view of a battery pack having a cooling device 100 according to a second embodiment of the present invention.

[0157] The battery pack includes a radiator 110, a pipe assembly 120 and a side wall, a plurality of battery cell stack assemblies are placed on the upper portion of the radiator 110, the pipe assembly 120 is connected to at least one of the front end and the rear end of the radiator 110, and the side wall is connected along the periphery of the radiator 110 to support the side of the battery cell stack assembly.

[0158] The battery pack may further include an upper case coupled to the upper end of the side wall to cover and protect the upper portion of the battery cell stack assembly. Fig.18 shown.

[0159] Since the cooling fluid F is injected into the radiator 110 through the cooling device 100 and travels, the plurality of battery cell stack assemblies accommodated in the battery pack may be cooled in real time.

[0160] The present invention has been described in more detail above with reference to the drawings and embodiments. However, it should be understood that the configuration shown in the drawings or embodiments described herein is only one embodiment of the present invention and does not represent all technical concepts of the present invention, and various equivalents and modifications that can replace them may exist when submitting this application.

[0161] [reference numerals]

[0162] 10: (Prior Art) Battery Pack

[0163] 20: (Prior Art) Pipeline Components

[0164] 30: (Prior Art) Radiator

[0165] 40: (Prior Art) Side Wall

[0166] 50: (Prior art) upper shell

[0167] 60: (Existing technology) primary port

[0168] 70: (Existing Technology) Port

[0169] 80: (Prior Art) Pipeline

[0170] 90: (Prior Art) Deformable Pipe

[0171] 1000: Battery Pack

[0172] 100: Cooling device

[0173] 110: Radiator

[0174] 111: Cooling channel

[0175] 112: Connection port

[0176] 112a: protrusion

[0177] 120: Pipeline components

[0178] 121: Primary port

[0179] 121a1: Main pipeline department

[0180] 121a2: Sub-pipeline department

[0181] 121b: Second pipeline

[0182] 122: Subport

[0183] 122a: Injection part

[0184] 122b: Connection

[0185] 123: Connecting Pipes

[0186] S: Joint

[0187] H: Operation part

[0188] F: Cooling fluid (moving)

Claims

1. A cooling device for cooling a battery cell stack assembly inside a battery pack using a cooling fluid supplied from a coolant storage unit, the cooling device comprising: a radiator, the radiator comprising a plurality of cooling channels; as well as a duct assembly coupled to the radiator to allow fluid to enter and exit the cooling passage, wherein The pipeline assembly comprises: a plurality of connectors coupled to each of the cooling channels and formed in a hollow type to allow a cooling fluid to pass therethrough; and A connecting pipe connecting each of the connectors, wherein The connector comprises: a main port connected to a coolant storage portion; and a plurality of sub-ports connected via the main port and the connecting pipe, wherein The master port comprises: a first pipe communicating the coolant storage portion and the connecting pipe; and A second pipe is branched from the first pipe and connected to a cooling channel.

2. The cooling device according to claim 1, wherein The first pipeline comprises: a main conduit section, wherein either end of the main conduit section is closed; and A sub-pipe portion is connected to a side portion of the main pipe portion.

3. The cooling device according to claim 2, wherein The sub-pipe portion is vertically connected to the main pipe portion.

4. The cooling device according to claim 2, wherein The second pipe is connected to the sub-pipe portion of the first pipe.

5. The cooling device according to claim 2, wherein A plurality of sub-pipe sections are connected to the main pipe section.

6. The cooling device according to claim 5, wherein Each of the sub-pipe portions is connected to be spaced apart by a predetermined distance along a longitudinal direction of the main pipe portion.

7. The cooling device according to claim 1, wherein The main port further includes an engaging portion in a snap-fit ​​structure protruding from the second pipe so that the second pipe is coupled to the radiator.

8. The cooling device according to claim 7, wherein The engagement portions are formed as symmetrical pairs on the second pipe.

9. The cooling device according to claim 7, wherein The radiator includes a pipe-shaped coupling port coupled to each cooling channel inlet, The coupling port includes a protrusion on which the engaging portion of the second pipe is engaged, and The second pipe is fastened to the coupling port by engagement of the engagement portion and the protrusion.

10. The cooling device according to claim 9, wherein When the engaging portion is lifted from the protruding portion, the second pipe is separated from the coupling port.

11. The cooling device according to claim 1, wherein The connector comprises plastic material and is manufactured as a single piece.

12. The cooling device according to claim 1, wherein The sub-port includes: a pipe-shaped injection portion; and A pipe-shaped connection portion is coupled to a side of the injection portion.

13. The cooling device according to claim 12, wherein The subport further includes an engaging portion in a snap-fit ​​structure protruding from the injection portion so that the injection portion is coupled to the heat sink.

14. A battery pack, the battery pack being applied with the cooling device according to claim 1 and accommodating a plurality of battery cell stack assemblies, the battery pack comprising: a heat sink, wherein a plurality of battery cell stack assemblies are disposed on an upper portion of the heat sink; a duct assembly coupled to at least one of a front end and a rear end of the radiator; as well as A side wall is coupled along a periphery of the heat sink to support a side of the battery cell stack assembly.

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