Fluid transport piping

Abstract

The present invention discloses a fluid transport pipe that is excellent in ease of assembly, cooling performance, condensation prevention performance, etc. The fluid transport pipe according to one aspect of the present invention includes a main pipe that extends long in one direction and has a main flow path formed therein in the longitudinal direction and a branch hole formed in the middle of the main flow path, and a branch pipe that has branch flow paths formed therein and is configured to be detachable from the portion of the main pipe where the branch hole is formed.

Description

[Technical Field]

[0001] This application claims priority based on Korean Patent Application No. 10-2022-0106965, filed on August 25, 2022, the entire contents of which are incorporated herein by reference in their entirety in the specification and drawings thereof.

[0002] The present invention relates to a piping for transporting fluid, and more particularly to a piping for cooling fluid applicable to a water-cooled cooling system of an energy storage system (ESS), and a cooling device and an energy storage system including the piping. [Background technology]

[0003] In recent years, as issues such as power shortages and environmentally friendly energy have come to the forefront, ESS, which stores generated electricity, has been attracting increasing attention. Typically, the use of such ESS makes it easy to build a power management system such as a smart grid system, making it possible to easily adjust the supply and demand of electricity in specific regions or cities. Furthermore, as the commercialization of electric vehicles gains momentum, such ESS can also be applied to electric charging stations for charging electric vehicles.

[0004] Furthermore, ESS is becoming popular for residential use, and its use in homes is gradually increasing. For example, residential ESS can store electricity generated from solar panels installed outside the home or electricity supplied from commercial power sources, and supply the electricity needed in the home.

[0005] Such an ESS may have a configuration in which multiple battery modules are housed in a rack frame. Each battery module may include multiple rechargeable batteries. An ESS may include many rechargeable batteries, each of which may generate heat during charging and discharging. Furthermore, multiple battery modules may be densely packed in a small space. Furthermore, an ESS may be exposed to seasonally or geographically high-temperature environments, such as summer or the desert.

[0006] If cooling is not adequate in such situations, a thermal event may occur in a specific battery cell or battery module, which could lead to failure or damage, as well as serious accidents such as fire or explosion. Furthermore, if thermal runaway occurs between battery cells or battery modules packed tightly together in a small space, it could lead to a major fire. Therefore, ESSs must be cooled appropriately according to the situation.

[0007] The most common cooling methods for ESSs are air-cooling and water-cooling. Air-cooling has limitations in cooling efficiency and is vulnerable to fire. On the other hand, water-cooling, which uses cooling water, has the advantages of relatively better cooling performance and the ability to actively respond to fires, etc., and is therefore widely used in the field of ESSs. However, water-cooling systems also have various issues that need to be resolved.

[0008] In particular, in a water-cooled system, a path for a fluid such as water to flow must be secured in the form of piping. Furthermore, a system such as an ESS may have many piping configurations. In this case, it is not easy to assemble the piping, such as connecting the piping to each other or to other connecting pipes, or to attach other components while the piping is in place. Furthermore, although the fluid must flow stably among many pipings, if the piping is long or has a complex path, the flow of the fluid may become unstable due to insufficient flow rate or flow velocity. This may result in insufficient cooling performance of the cooling system. Furthermore, condensation may occur on the exterior of the piping through which the fluid flows. In particular, condensation may cause problems such as short circuits and fires. Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention has been devised to solve the above problems, and aims to provide a fluid transport pipe that is easy to assemble, has excellent cooling performance, and has excellent anti-condensation performance, as well as a cooling device and an energy storage system that include the pipe.

[0010] The technical problems that the present invention aims to solve are not limited to the above-mentioned problems, and other problems will be apparent to those skilled in the art from the following description of the invention. [Means for solving the problem]

[0011] In order to achieve the above-mentioned object, a fluid transport pipe according to one aspect of the present invention includes a main pipe having a form extending long in one direction, with a main flow path formed inside in the longitudinal direction and a branch hole formed in the middle of the main flow path, and a branch pipe having a branch flow path formed inside and configured to be detachable from the portion of the main pipe where the branch hole is formed.

[0012] Here, the branch pipe may be configured to be connectable to the main pipe such that an extension direction of the branch flow path is inclined at an acute angle with respect to an extension direction of the main flow path.

[0013] The main pipe may include a plurality of conduits therein, and the branch pipe may include a plurality of conduits, at least one of which may be detachably attached to each of the plurality of conduits.

[0014] The branch pipes may be configured to be connectable to the respective conduits while inclined in the same direction.

[0015] The main pipe may further include a main housing having a hollow space formed therein, the main housing configured to accommodate the plurality of conduits together in the hollow space.

[0016] Additionally, the plurality of conduits may be configured to be at least partially spaced apart from the inner surface of the main housing.

[0017] The conduits may be arranged in the hollow interior of the main housing at predetermined distances from one another.

[0018] The main pipe may be configured such that both ends in the longitudinal direction of the main flow path are open.

[0019] The main pipe may have fastening holes formed around the branch hole, and the branch pipe may be configured to be fastened to the fastening holes of the main pipe with bolts.

[0020] The branch pipe may further include a branch unit, which may include a mounting part that is placed on the surface of the main pipe, and a conduit part that is hollow as the branch flow path, one end of which is connected to the mounting part and extends in a manner that is inclined at a predetermined angle from the mounting part.

[0021] The main pipe may be formed with a mounting groove on which the mounting part can be placed.

[0022] The branch pipe may further include a cap unit made of a material having lower thermal conductivity than the branch unit, the cap unit being configured to enclose at least a portion of the branch unit from the outside.

[0023] The cap unit may also include a mounting cap configured to enclose the mounting part from the outside, and a conduit cap configured to enclose the conduit part from the outside.

[0024] The cap unit may be configured to be at least partially separated from the branching unit by a predetermined distance.

[0025] A cooling device according to another aspect of the present invention includes the fluid transport pipe according to an aspect of the present invention.

[0026] Furthermore, an energy storage system according to yet another aspect of the present invention includes a fluid transport pipe according to an aspect of the present invention. [Effects of the Invention]

[0027] According to one aspect of the present invention, a water-cooling system that is easy to assemble or process can be provided.

[0028] In particular, in one aspect of the present invention, in a fluid transport pipe in which a branch pipe is connected to a main pipe at an acute angle, a process of pushing another pipe, for example, a connecting pipe connected to a battery module, into the branch pipe can be easily achieved.

[0029] According to another aspect of the present invention, the process of attaching a heat insulating material to the outside of the main pipe can be simplified. In this case, the area covered by the heat insulating material can be increased to minimize the main pipe being exposed to the outside of the heat insulating material, thereby improving the heat insulating effect of the heat insulating material, particularly the effect of suppressing condensation.

[0030] According to one aspect of the present invention, a water-cooling system with excellent cooling performance can be provided. In particular, in one aspect of the present invention, the flow rate or flow velocity between the main pipe and the separation pipe is improved, ensuring excellent cooling performance. Furthermore, according to one aspect of the present invention, more battery modules can be cooled using the same cooling fluid supply unit, for example, the same chiller, compared to conventional technologies.

[0031] In addition, according to one aspect of the present invention, the energy density of a cooling device and an energy storage system can be improved. In particular, according to one aspect of the present invention, the number of cooling fluid supply units and the space occupied by fluid transport piping can be reduced, thereby increasing the number of battery modules.

[0032] Furthermore, according to one aspect of the present invention, the size of the branch pipes protruding from the main pipe is reduced, which makes it easier to assemble and replace other components such as battery modules.

[0033] According to another aspect of the present invention, a water-cooled system capable of effectively preventing condensation can be provided. Therefore, according to another aspect of the present invention, problems such as short circuits and fires caused by condensation can be prevented in an ESS or the like to which the cooling system is applied. Furthermore, according to another aspect of the present invention, the ESS can be cooled using cooling water, ensuring excellent cooling performance while also enabling proactive response in the event of a fire.

[0034] In addition, various other additional effects can be achieved by many embodiments of the present invention. These various effects of the present invention will be described in detail in each embodiment, but explanations of effects that are easily understood by those skilled in the art will be omitted.

[0035] The following drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention, serve to further understand the technical concept of the present invention. Therefore, the present invention should not be interpreted as being limited to only the matters described in the drawings. [Brief explanation of the drawings]

[0036] [Figure 1] 1 is a perspective view showing a schematic configuration of a fluid transport pipe according to an embodiment of the present invention. [Figure 2] 1 is an exploded perspective view of a partial configuration of a fluid transport pipe according to an embodiment of the present invention. [Figure 3] 1 is a cross-sectional view showing the configuration of a fluid transport pipe according to an embodiment of the present invention. [Figure 4] 2 is a schematic diagram illustrating the flow of cooling fluid in a conduit in a fluid transport piping according to an embodiment of the present invention; FIG. [Figure 5] FIG. 10 is a schematic diagram illustrating the flow of cooling fluid in another conduit in a fluid transport piping according to an embodiment of the present invention. [Figure 6] 1 is a diagram schematically illustrating a fluid transport pipe according to an embodiment of the present invention, viewed from one side. [Figure 7] 1 is a cross-sectional view that schematically shows an example of a partial configuration of a fluid transport pipe according to an embodiment of the present invention. [Figure 8] FIG. 10 is a cross-sectional view that schematically shows a partial configuration of a fluid transport pipe according to another embodiment of the present invention. [Figure 9] 1 is an exploded perspective view showing a configuration in which two fluid transport pipes are coupled together according to an embodiment of the present invention; [Figure 10] FIG. 10 is a perspective view of the assembly of FIG. [Figure 11] FIG. 11 is a cross-sectional view showing the configuration of the A3 portion of FIG. [Figure 12] FIG. 12 is an enlarged view of a portion A6 in FIG. [Figure 13] FIG. 12 is an enlarged view of a portion A7 in FIG. [Figure 14]FIG. 10 is a cross-sectional view that schematically shows a partial configuration of a fluid transport pipe according to still another embodiment of the present invention. [Figure 15] FIG. 10 is an exploded perspective view schematically showing a partial configuration of a fluid transport pipe according to still another embodiment of the present invention. [Figure 16] FIG. 10 is a perspective view that schematically shows the configuration of a fluid transport pipe according to still another embodiment of the present invention. [Figure 17] FIG. 17 is an exploded perspective view of the embodiment of FIG. 16. [Figure 18] FIG. 17 is a diagram showing a schematic configuration in which two fluid transport pipes in FIG. 16 are connected together. [Figure 19] 1 is a diagram schematically illustrating a partial configuration of a fluid transport pipe according to an embodiment of the present invention. [Figure 20] FIG. 10 is a diagram schematically illustrating a partial configuration of a cooling device according to another embodiment of the present invention. [Figure 21] FIG. 10 is a diagram illustrating a schematic configuration of an energy storage system according to yet another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0037] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms and phrases used in the specification and claims should not be construed as being limited to their ordinary and dictionary meanings, but should be construed as having meanings and concepts corresponding to the technical ideas of the present invention, in accordance with the principle that the inventors themselves can appropriately define the concepts of terms in order to best describe the invention.

[0038] Therefore, it should be understood that the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent the entire technical idea of ​​the present invention, and that there may be various equivalents and modifications that can be substituted therefor at the time of this application.

[0039] Fig. 1 is a perspective view that schematically shows the configuration of a fluid transport pipe 100 according to one embodiment of the present invention. Fig. 2 is an exploded perspective view of a portion of the configuration of the fluid transport pipe 100 according to one embodiment of the present invention. Fig. 3 is a cross-sectional view that shows the configuration of the fluid transport pipe 100 according to one embodiment of the present invention. For example, Fig. 3 is a cross-sectional view taken along line A1-A1' in Fig. 1.

[0040] 1 to 3, a fluid transport pipe 100 according to one embodiment of the present invention includes a main pipe 110 and a branch pipe 120.

[0041] The main pipe 110 may be configured to extend long in one direction. For example, as shown in FIGS. 1 to 3, the main pipe 110 may be configured to extend long in the Z-axis direction (vertical direction). The main pipe 110 may have a main flow path formed therein, as shown by the portion H in FIG. 3. In this case, the main flow path H may be configured to extend long in the vertical direction along the longitudinal direction of the main pipe 110. A fluid, particularly a coolant such as water, may flow through the main flow path H.

[0042] The main pipe 110 may have a branch hole formed therein, as shown by R in Figures 2 and 3. The branch hole R may be formed in the middle of the main flow path H. For example, referring to Figures 2 and 3, the main flow path H may be elongated in the vertical direction, and the branch hole R may be formed in the center of the main flow path H. Here, the term "middle" or "center" does not refer only to the exact center point between both ends of the main flow path H, but broadly refers to the area located between the ends regardless of the distance therebetween.

[0043] The branch hole R may be configured to be exposed to the outside of the main pipe 110 at the center of the main flow path H. That is, referring to the configuration of Fig. 2, when the branch pipe 120 is not coupled to the main pipe 110, the branch hole R may be exposed to the outside of the main pipe 110. Therefore, it can be said that the main flow path H is located inside the main pipe 110 in a hollow form, but is exposed to the outside of the main pipe 110 at the portion where the branch hole R is formed.

[0044] 2 and 3, a branch flow path may be formed inside the branch pipe 120. The branch pipe 120 may be formed to extend in one direction, and the branch flow path N may be formed long along the extension direction of the branch pipe 120.

[0045] The branch pipe 120 may be coupled to a portion of the main pipe 110 where the branch hole R is formed. In particular, the branch pipe 120 may be configured to be detachable from the main pipe 110. That is, the branch pipe 120 may be attached to or separated from the main pipe 110. Furthermore, the branch pipe 120 may not be configured integrally with the main pipe 110, but may be configured to be able to be assembled to the main pipe 110 after the main pipe 110 is installed in a cooling device, an energy storage system, or the like.

[0046] According to this embodiment of the present invention, the branch pipe 120 can be appropriately attached and detached to and from the main pipe 110 depending on the situation, thereby improving the ease of assembly or processability of a cooling device or energy storage system. In particular, a connecting pipe or the like for exchanging coolant with a battery module can be connected to the branch pipe 120 by a method such as pushing. In this case, since the connecting pipe can be pushed into the branch pipe 120 without the branch pipe 120 being connected to the main pipe 110, the pushing process can be performed more easily regardless of the angle between the branch pipe 120 and the main pipe 110. In addition, in this case, it is possible to prevent the branch pipe 120 or the main pipe 110 from being damaged or broken during the pushing process.

[0047] The branch pipe 120 may be configured to be inclined at a predetermined angle with respect to the main pipe 110. In particular, the branch pipe 120 may be configured to be inclined at an acute angle with respect to the main pipe 110. That is, the branch pipe 120 may be configured to be connectable to the main pipe 110 such that the extension direction of the branch flow channel N is inclined at an acute angle with respect to the extension direction of the main flow channel H. More specifically, referring to FIG. 3 , the angle between the extension direction of the branch flow channel N and the extension direction of the main flow channel H may be represented by θ. In this case, θ may be smaller than 90°. In particular, the branch pipe 120 may be connected to the main pipe 110 such that it is inclined at an angle of approximately 45°.

[0048] According to this embodiment of the present invention, the flow rate or flow velocity of the cooling fluid can be increased by the Venturi effect, in which a large air current draws in a small air current around it, increasing the flow rate or flow velocity. In this case, air bubbles can be more easily discharged from inside the branch pipe 120 or the main pipe 110. Therefore, the cooling performance of the water cooling system can be further improved.

[0049] In addition, according to this embodiment, the cooling area of ​​a chiller that supplies cooling fluid can be increased for the same performance, so the size or number of chillers can be reduced, or the number of cooling targets, for example, battery modules, that the chiller is responsible for can be increased.

[0050] Furthermore, according to this embodiment, the inclined structure reduces the extent to which the branch pipe 120 protrudes from the main pipe 110. This makes it easier to assemble a cooling device or an energy storage system. For example, when separating or assembling a battery module from a cooling device, interference due to the branch pipe 120 can be reduced. Furthermore, according to this embodiment, the volume of the cooling device can be reduced, thereby increasing the size of the object to be cooled, such as a battery module. This is advantageous for reducing the volume of the cooling device and improving the energy density in an energy storage system, etc.

[0051] Furthermore, in the case of the fluid transport pipe 100 according to one aspect of the present invention, a connecting pipe or the like may be connected to the branch pipe 120 before the branch pipe 120 is attached to the main pipe 110. Therefore, a configuration in which the branch pipe 120 is assembled to the main pipe 110 at an acute angle, as in this embodiment, is more easily achieved. In particular, when the branch pipe 120 is connected to the main pipe 110 at an acute angle, for example, 45°, it is not easy to push a connecting pipe or the like into the end of the branch pipe 120. Furthermore, in this case, there is a risk of damage to the branch pipe 120 or the like. However, according to this embodiment of the present invention, this problem can be prevented because the connecting pipe is pushed into the branch pipe 120 before the branch pipe 120 is attached to the main pipe 110.

[0052] The main pipe 110 may have a plurality of conduits 111 therein. Also, a plurality of branch pipes 120 may be provided. In this case, at least one branch pipe 120 may be configured to be detachable from each of the plurality of conduits 111.

[0053] 1 and 2, the main pipe 110 may include two conduits 111. One or more, for example, two, branch pipes 120 may be detachably attached to each conduit 111. In particular, when a plurality of branch pipes 120 are configured to be detachably attached to each conduit 111, the plurality of branch pipes 120 may be arranged to be spaced apart by a predetermined distance along the extension direction of each conduit 111. For example, when two branch pipes 120 are attached to one conduit 111, the two branch pipes 120 may be arranged to be spaced apart by a predetermined distance along the vertical direction (Z-axis direction). In this case, it can be said that a total of four branch pipes 120 are configured to be detachably attached to one main pipe 110.

[0054] In such an embodiment, at least some of the conduits 111 may have cooling fluid flowing in different directions, as will be more particularly described with further reference to Figures 4 and 5.

[0055] 4 and 5 are schematic diagrams illustrating the flow of cooling fluid in different conduits 111 in the fluid transport piping 100 according to one embodiment of the present invention. For example, FIG. 4 illustrates the flow of cooling fluid in part A2 of FIG. 1, and FIG. 5 illustrates the flow of cooling fluid in part A3 of FIG. 1.

[0056] 1 and 2, when two conduits 111, i.e., a first conduit 111a and a second conduit 111b, are provided in the main pipe 110, one conduit, for example, the first conduit 111a, can function as an inlet conduit 111, and the other conduit, for example, the second conduit 111b, can function as an outlet conduit 111. In this case, cooling fluids can flow in opposite directions inside the two conduits 111.

[0057] 4, the cooling fluid may flow downward (in the −Z-axis direction) along the main flow path H inside the first conduit 111a, which is the main pipe 110, as indicated by arrow B1. At this time, a portion of the cooling fluid flowing through the first conduit 111a may flow out of the main flow path H through the branch flow path N of the branch pipe 120 as indicated by arrow B1′. The cooling fluid thus flowing out may flow into or around the battery module.

[0058] 5, the cooling fluid may flow upward (in the +Z-axis direction) along the main flow path H inside the second conduit 111b, which is the main pipe 110, as indicated by arrow B2. At this time, the cooling fluid may flow from the branch pipe 120 into the second conduit 111b as indicated by arrow B2'. That is, the cooling fluid flows through the branch flow path N before flowing into the main flow path H.

[0059] In such an embodiment, the plurality of branch pipes 120 can be configured to be connectable to each of the plurality of conduits (first conduit 111a, second conduit 111b) while being inclined in the same direction.

[0060] 4 and 5, the branch pipes 120 connected to the first conduit 111a and the branch pipes 120 connected to the second conduit 111b may be attached to and detached from the respective conduits 111 in a downwardly inclined state. In particular, the branch pipes 120 connected to the first conduit 111a and the second conduit 111b may be attached to and extend downward at an angle of about 45° with respect to the extension direction of the main flow path H. That is, the inlet branch pipe 120 and the outlet branch pipe 120 may be attached to the main pipe 110 in a downwardly inclined state of 45°.

[0061] In particular, the cooling fluid flows through the branch flow channel N into the first conduit 111a and out the rear (negative Y-axis direction) downward. The cooling fluid flows through the branch flow channel N into the second conduit 111b and in the front (positive Y-axis direction) upward.

[0062] According to this embodiment of the present invention, the Venturi effect is effectively improved in both the inlet branch pipe as shown in FIG. 4 and the outlet branch pipe as shown in FIG. 5. Therefore, in the process of supplying a cooling fluid to a cooling target such as a battery module or discharging the cooling fluid that has absorbed heat from the cooling target to the outside, the pressure difference between the inlet pipe and the outlet pipe can be reduced, and the flow rate or flow velocity can be significantly increased. This further improves the cooling efficiency of the entire water-cooling system. Furthermore, in this case, the cooling range can be further expanded even when using the same chiller.

[0063] The main pipe 110 may also include a main housing 112. This will be described in more detail with reference to FIGS.

[0064] Fig. 6 is a diagram schematically illustrating a form of a fluid transport pipe 100 according to one embodiment of the present invention, viewed from one side. For example, Fig. 6 is a diagram illustrating a fluid transport pipe 100 according to one aspect of the present invention, viewed from above in an upright state. Also, Fig. 7 is a cross-sectional view schematically illustrating an example of a partial configuration of a fluid transport pipe 100 according to one embodiment of the present invention. For example, Fig. 7 is a cross-sectional view taken along line A4-A4' in Fig. 1.

[0065] The main housing 112 may have a hollow. For example, the main housing 112 may have an empty space therein, as shown by V in FIGS. 6 and 7. The empty space may accommodate a plurality of conduits 111 together. In particular, the first conduit 111a and the second conduit 111b may be accommodated together in the hollow V of the main housing 112, which is a common space. The main housing 112 may extend in the longitudinal direction of the plurality of conduits (first conduit 111a, second conduit 111b). For example, referring to FIGS. 1 and 7, the main housing 112 may extend in the Z-axis direction. In this case, the hollow V of the main housing 112 may also extend in the Z-axis direction.

[0066] According to this embodiment of the present invention, two conduits 111, i.e., first conduit 111a and second conduit 111b, are contained within one main housing 112, so a system that both supplies and discharges fluid can be easily realized with simple installation. For example, when fluid transport piping 100 according to one aspect of the present invention is installed to carry coolant for cooling a specific device, such as a battery in an energy storage system, both the inflow and outflow of the coolant are achieved through a single pipe. Therefore, a water-cooling system for a device such as an ESS can be more easily realized with simple operations or processes.

[0067] Furthermore, according to this embodiment of the present invention, heat insulation is ensured during the transport of the cooling fluid, while condensation can be effectively prevented. In particular, the fluid transport pipe 100 according to one aspect of the present invention can be said to have a double-pipe structure. That is, when cooling water flows inside the fluid transport pipe 100, the cooling water and the outside air are doubly isolated by the conduit 111 and the main housing 112. Therefore, even if there is a temperature difference between the cooling water and the outside air, condensation can be effectively prevented from occurring on the surface of the fluid transport pipe 100, etc. This makes it possible to prevent problems such as short circuits and fires caused by condensation inside devices such as ESSs.

[0068] In this embodiment, the branch hole R may be formed in both the conduit 111 and the main housing 112. For example, a hole may be formed in the center of the first conduit 111a, and a hole may also be formed in a predetermined position of the main housing 112 corresponding to this hole. The holes of the first conduit 111a and the main housing 112 may be connected to each other to form the branch hole R. Holes may also be formed in the second conduit 111b, and holes may also be formed in the main housing 112 at positions and shapes corresponding to these holes, and these holes may be connected to each other to form the branch hole R.

[0069] Furthermore, the holes formed in the conduit 111 and the holes formed in the main housing 112 may be integrated. For example, as shown in FIG. 6, each conduit 111 may be connected to the main housing 112 through connecting portions (C11, C12, C21, C22). In this case, a hollow may be formed in at least some of the connecting portions, and both ends of the hollow may be opened as a branch hole R, forming a hole in the conduit 111 and a hole in the main housing 112. More specifically, a hollow may be formed in the connecting portion C12, and both open ends of the hollow may be positioned in the first conduit 111a and the main housing 112 to form the branch hole R. Also, a hollow may be formed in the connecting portion C22, and both open ends of the hollow may be positioned in the second conduit 111b and the main housing 112 to form the branch hole R.

[0070] When multiple conduits 111 are included within the main housing 112, at least one of the multiple conduits 111 may be configured to be at least partially separated from the inner surface of the main housing 112. In particular, all of the multiple conduits 111 may be at least partially separated from the inner surface of the main housing 112.

[0071] For example, referring to the embodiment shown in FIGS. 6 and 7, the first conduit 111a and the second conduit 111b may be disposed on the left and right sides, respectively, within the hollow V of the main housing 112. In this case, the left outer surface of the first conduit 111a may be configured to be spaced a predetermined distance from the left inner surface of the hollow main housing 112, as indicated by reference sign V11. And, the right outer surface of the second conduit 111b may be configured to be spaced a predetermined distance from the right inner surface of the hollow main housing 112, as indicated by reference sign V12. In this case, it can be said that a gas layer, particularly an air layer, is formed between the outer surface of the first conduit 111a and the inner surface of the main housing 112 (V11), and between the outer surface of the second conduit 111b and the inner surface of the main housing 112 (V12). That is, the first conduit 111a and the second conduit 111b may be configured such that their surfaces, located on opposite sides of each other, are spaced apart from the inner surface of the main housing 112.

[0072] According to this embodiment of the present invention, the effect of preventing condensation can be further improved. That is, the air layer formed between each conduit 111 and the main housing 112 functions as a heat insulating layer, and can more effectively prevent condensation from occurring on the outer surface of the conduit 111 due to the temperature difference between the fluid flowing inside the conduit 111, such as the coolant, and the outside air.

[0073] Furthermore, the plurality of conduits 111 may be arranged to be spaced apart from each other by a predetermined distance inside the hollow V of the main housing 112. In particular, an air layer may be formed between the conduits 111.

[0074] 6 and 7, the first conduit 111a and the second conduit 111b are arranged in the left-right direction, and an empty space may be formed between them, as shown by V2. Furthermore, a gas layer, particularly an air layer, may be formed in the empty space between the first conduit 111a and the second conduit 111b.

[0075] The separation space, i.e., the air layer, between the first conduit 111a and the second conduit 111b can function as a thermal insulating layer. This air layer can prevent heat transfer between the first conduit 111a and the second conduit 111b. In particular, coolants of different temperatures can flow through the first conduit 111a and the second conduit 111b. For example, coolant before absorbing heat from the ESS battery can flow through the first conduit 111a, and coolant after absorbing heat from the ESS battery can flow through the second conduit 111b. In this case, the temperature of the coolant in the second conduit 111b is higher than the temperature of the coolant in the first conduit 111a. In this case, the air layer V2 between the first conduit 111a and the second conduit 111b can suppress heat transfer from the second conduit 111b to the first conduit 111a. Therefore, the temperature of the cooling water supplied through the first conduit 111a can be maintained, and the cooling performance can be ensured more stably.

[0076] Additionally, multiple conduits 111 may be mounted parallel to one another within the hollow V of the main housing 112 .

[0077] For example, the first conduit 111a and the second conduit 111b may each be configured to extend elongatedly in the vertical direction (Z-axis direction). In particular, the extension direction of the first conduit 111a and the extension direction of the second conduit 111b may be parallel, and the distance between them may be constant from top to bottom. That is, as shown by V2 in FIG. 7, the distance between the first conduit 111a and the second conduit 111b may be constant from top to bottom.

[0078] According to this embodiment of the present invention, the heat insulating performance between the first conduit 111a and the second conduit 111b can be stably maintained throughout the entire internal space of the main housing 112.

[0079] 7, the distance between each conduit 111 (first conduit 111a, second conduit 111b) and the inner surface of the main housing 112 may be maintained constant from one end to the other. For example, the space between the first conduit 111a and the inner surface of the main housing 112 as indicated by V11, and the space between the second conduit 111b and the inner surface of the main housing 112 as indicated by V12 may be maintained constant in the left-right direction from top to bottom.

[0080] According to this embodiment of the present invention, it is possible to ensure a uniform prevention effect against condensation from one end of the main housing 112 to the other end in the direction of fluid transport.

[0081] Furthermore, in a fluid transport pipe 100 according to one embodiment of the present invention, each of the plurality of conduits 111 may be formed in a circular pipe shape. For example, referring to FIG. 6, the first conduit 111a and the second conduit 111b may both be formed so that their horizontal cross sections are annular. That is, the first conduit 111a and the second conduit 111b may be formed in a cylindrical shape with a flow path formed therein. In this case, it can be said that the flow path of each conduit 111 is also formed in a cylindrical shape.

[0082] According to this embodiment, the first conduit 111a and the second conduit 111b may be separated as far as possible. For example, referring to the embodiment of FIG. 6, the separation space between the first conduit 111a and the second conduit 111b is maximized as shown by V2. This minimizes heat transfer between the fluid flowing inside the first conduit 111a and the fluid flowing inside the second conduit 111b. Furthermore, according to this embodiment, the fluid may flow smoothly inside the first conduit 111a and the second conduit 111b.

[0083] In this embodiment, an air layer may be formed between each of the circular conduits 111 (first conduit 111a, second conduit 111b) and the inner surface of the main housing 112, following the shape of the outer surface of each conduit. That is, the air layer may be formed to surround at least a portion of the outer surface of each conduit. For example, referring to the configuration of FIG. 6, a curved surface may be formed on the outer surface of the left side of the first conduit 111a, and an air layer may extend with a uniform thickness from the top to the left and bottom of the first conduit 111a along the curved shape of the left side of the first conduit 111a (V11). Also, in the embodiment of FIG. 6, a curved surface may be formed on the outer surface of the right side of the second conduit 111b, and an air layer may extend with a uniform thickness from the top to the right and bottom of the second conduit 111b along the curved shape of the right side of the second conduit 111b (V12). In this case, it can be said that the air layer formed on the outer surface of each conduit is formed in the shape of a plate curved along the outer curved surface of each conduit.

[0084] In particular, the first conduit 111a and the second conduit 111b may have curved air layers formed at curved portions facing the inner surface of the main housing 112. For example, in the case of the first conduit 111a, a curved plate-shaped air layer may be formed on the outer surface of the left side, and in the case of the second conduit 111b, a curved plate-shaped air layer may be formed on the outer surface of the right side.

[0085] According to this embodiment of the present invention, the dew condensation prevention effect due to the insulating properties of the air layer can be uniformly achieved throughout. For example, in the case of the first conduit 111a, the insulating properties of the air layer can be uniformly ensured from the top of the left outer surface through the left side to the bottom. Therefore, the possibility of blind spots in the dew condensation prevention can be reduced. Furthermore, according to this embodiment, the overall volume of the piping can be reduced while forming a large insulating layer.

[0086] At least one of the first conduit 111a and the second conduit 111b may be fixedly coupled to the hollow interior of the main housing 112 through two or more connectors.

[0087] 3 and 6, the first conduit 111a may have two connecting portions, i.e., a first front connecting portion C11 and a first rear connecting portion C12. The first conduit 111a may be coupled and fixed to the inner surface of the main housing 112 through these two connecting portions (the first front connecting portion C11 and the first rear connecting portion C12). Also, referring to FIG. 6, the second conduit 111b may have two connecting portions, i.e., a second front connecting portion C21 and a second rear connecting portion C22. The second conduit 111b may be coupled and fixed to the inner surface of the main housing 112 through these two connecting portions (the second front connecting portion C21 and the second rear connecting portion C22).

[0088] According to this embodiment of the present invention, the first conduit 111a and the second conduit 111b can stably maintain their positions within the hollow interior of the main housing 112. In particular, force may be applied to each conduit 111 while coolant is flowing through the conduits 111. In this case, each connector can prevent the first conduit 111a and / or the second conduit 111b from moving within the hollow interior of the main housing 112 due to such force.

[0089] Furthermore, according to this embodiment, it is possible to stably maintain a separation space, such as an air layer, formed between each conduit 111 and the inner surface of the main housing 112 through the connecting parts provided on the inside and outside of each conduit 111. Therefore, in this case, the double structure of the fluid transport pipe 100 according to one aspect of the present invention, particularly the heat insulating performance due to the air layer, is stably ensured, thereby more reliably achieving condensation prevention performance.

[0090] Furthermore, the connecting portion may be located at both ends of the first conduit 111a or the second conduit 111b in a direction perpendicular to the arrangement direction of the first conduit and the second conduit.

[0091] 6, the first conduit 111a and the second conduit 111b are arranged in the left-right direction (X-axis direction), and the connectors may be provided in the front-rear direction (Y-axis direction) of each conduit 111, which is perpendicular to the left-right direction in a horizontal plane. More specifically, the first connectors (first front connector C11, first rear connector C12) may be provided in front and rear of the first conduit 111a, respectively, and may be coupled and fixed to the inner surface of the main housing 112. In addition, the second connectors (second front connector C21, second rear connector C22) may be provided in front and rear of the second conduit 111b, respectively, and may be coupled and fixed to the inner surface of the main housing 112.

[0092] According to this embodiment of the present invention, no connectors are provided between the conduits 111, so that heat transfer between the conduits 111 through connectors can be prevented.

[0093] In this embodiment, the connecting portions may have different sizes (thicknesses). For example, referring to the embodiment shown in FIG. 6, the rear connecting portions (first rear connecting portion C12, second rear connecting portion C22) may be thicker than the front connecting portions (first front connecting portion C11, second front connecting portion C21). In particular, the rear connecting portions (first rear connecting portion C12, second rear connecting portion C22) may be located between the conduit 111 and the branch pipe 120. A branch hole R connecting the conduit 111 and the branch pipe 120 may be formed in the rear connecting portions (first rear connecting portion C12, second rear connecting portion C22). That is, the rear connecting portions (first rear connecting portion C12, second rear connecting portion C22) may have a greater thickness in the horizontal direction, particularly in the left-right direction, than the front connecting portions (first front connecting portion C11, second front connecting portion C21) to provide a space for forming the branch hole R.

[0094] Fig. 8 is a cross-sectional view schematically illustrating a partial configuration of a fluid transport pipe 100 according to another embodiment of the present invention. For example, Fig. 8 illustrates another form of the cross-sectional configuration taken along line A1-A1' in Fig. 1. In the various embodiments included in this specification, detailed descriptions of parts that are identically or similarly applicable to other embodiments will be omitted, and differences will be mainly described.

[0095] As shown in Fig. 8, through holes may be formed in the connecting portions that secure each conduit 111 within the hollow interior of the main housing 112. More specifically, in the embodiment of Fig. 8, one or more through holes may be formed in the first front connecting portion C11 and the first rear connecting portion C12 provided at the front and rear of the first conduit 111a, as indicated by D. Also, in the embodiment of Fig. 6, one or more through holes may be formed in the second front connecting portion C21 and / or the second rear connecting portion C22 provided at the second conduit 111b.

[0096] In this embodiment of the present invention, the through-hole D may connect two air spaces separated by the connecting parts. For example, in Fig. 6, the two air spaces (V11, V2) separated by the first connecting parts (first front connecting part C11, first rear connecting part C12) may be connected to each other through the through-hole D formed in the first connecting parts (first front connecting part C11, first rear connecting part C12). Also, in Fig. 2, the two air spaces (C12, V2) separated by the second connecting parts (second front connecting part C21, second rear connecting part C22) may be connected to each other through the through-hole D formed in the second connecting parts (second front connecting part C21, second rear connecting part C22).

[0097] In particular, the through-hole D of the connecting portion located between the conduit 111 and the branch pipe 120 may be located in a portion where no branch hole R is formed. For example, referring to the embodiment of FIG. 8, the first rear connecting portion C12 is located between the first conduit 111a and the branch pipe 120. In this case, a plurality of through-holes D may be formed in the vertical direction in the first rear connecting portion C12. Here, the plurality of through-holes D may not be formed in the portion where the branch hole R is located, but may be formed only in the portion where the branch hole R is not located.

[0098] According to this embodiment, the heat insulating performance of the air layers can be further improved by the flow of air between the air layers. Also, according to this embodiment, by forming an air layer in the center of the connection part, it is possible to prevent or reduce heat transfer through the connection part between the conduit 111 and the main housing 112. Therefore, in this case, it is possible to more reliably prevent condensation and the like from occurring on the outer surface of the main housing 112.

[0099] The main pipe 110 may be configured such that both longitudinal ends of the main flow passage H are open. For example, in the embodiment of FIG. 1, the main pipe 110 may be configured such that both longitudinal ends of the main flow passage H formed in each conduit 111 are open. More specifically, referring to the embodiment of FIG. 7, a first flow passage H1 may be formed in the first conduit 111a as the main flow passage H, and a second flow passage H2 may be formed in the second conduit 111b as the main flow passage H. In this case, the first flow passage H1 and the second flow passage H2 may be configured such that their upper and lower ends are open and exposed to the outside, respectively.

[0100] In this configuration, the cooling fluid can flow in or out of the main flow passage H through the open end.

[0101] Furthermore, two or more fluid transport pipes 100 according to one embodiment of the present invention may be configured to be coupled together. In particular, the fluid transport pipes 100 according to one embodiment of the present invention may be configured to be coupled together in the longitudinal direction, and may be configured to allow fluid to flow between the conduits 111 included in each pipe. This will be described in more detail with reference to FIGS. 9 to 11.

[0102] Fig. 9 is an exploded perspective view showing a configuration in which two fluid transport pipes 100 are coupled together according to an embodiment of the present invention, and Fig. 10 is a coupled perspective view of Fig. 9. Also, Fig. 11 is a cross-sectional view showing the configuration of part A3 in Fig. 10.

[0103] 9 to 11, a plurality of fluid transport pipes 100 such as those indicated by P1 and P2 may be coupled in the longitudinal direction. More specifically, in FIGS. 9 to 11, the first pipe P1 and the second pipe P2 may extend vertically and be positioned at the top and bottom, respectively, and may be coupled to each other in the vertical direction (Z-axis direction). The first pipe P1 and the second pipe P2 may be configured in the same shape.

[0104] Here, each conduit (first conduit 111a, second conduit 111b) included in the fluid transport pipe 100 may be configured so that both open ends are mated with each other. First, in each fluid transport pipe 100, the first conduit 111a has an open upper end and a lower end, and these open ends may be configured so that they are mated with each other. That is, based on the first pipe P1, the upper end of the first conduit 111a in the first pipe P1 may be configured so that it can communicate with and be fastened to the lower end of the first conduit 111a.

[0105] Therefore, when two different fluid transport pipes 100, i.e., the first pipe P1 and the second pipe P2, are vertically coupled, the lower end of the first conduit 111a included in the upper first pipe P1 can be mated with the upper end of the first conduit 111a included in the lower second pipe P2. In this case, the fastening portions of the first conduits 111a between the two coupled pipes can be sealed to prevent leakage of fluid from the first flow path H1. Therefore, coolant or the like can flow continuously between the first conduits 111a included in the two fluid transport pipes 100, for example, the first pipe P1 and the second pipe P2.

[0106] In addition, in each fluid transport pipe 100, the second conduit 111b also has open upper and lower ends, and these open ends may be configured to fit together. That is, based on the first pipe P1, the upper end of the second conduit 111b in the first pipe P1 may be configured to be able to communicate with and fasten to the lower end of the second conduit 111b.

[0107] Therefore, when two different fluid transport pipes 100, i.e., the first pipe P1 and the second pipe P2, are connected in the vertical direction, the lower end of the second conduit 111b of the first pipe P1 located on the upper side can be connected to the upper end of the second conduit 111b of the second pipe P2 located on the lower side. At this time, the connection portions of the second conduits 111b can be sealed to prevent leakage of fluid from the second flow path H2. Therefore, a fluid such as cooling water can flow continuously between the second conduits 111b including the two fluid transport pipes 100.

[0108] 9 to 11 show a configuration in which two fluid transport pipes 100 are connected for convenience of explanation, but three or more fluid transport pipes 100 may be connected in a long length. In particular, in the case of a large device such as an ESS, a large number of fluid transport pipes 100 are connected to each other to form a cooling system for supplying coolant to multiple batteries, and in this case, the first conduits 111a and the second conduits 111b of each fluid transport pipe 100 may be connected in a long length.

[0109] According to this embodiment of the present invention, a medium- to large-sized cooling system can be easily realized by connecting two different fluid transport pipes 100. In particular, according to this embodiment, the number of connected fluid transport pipes 100 can be selectively adjusted, and the length of the fluid transport path can be freely adjusted. Therefore, it is possible to provide a fluid transport pipe 100 that is compatible with and applicable to various types of cooling systems.

[0110] The fluid transport pipe 100 according to one embodiment of the present invention may further include an internal sealing portion, which will be described in more detail with further reference to FIG.

[0111] FIG. 12 is an enlarged view of the A6 portion of FIG.

[0112] 11 and 12, an internal sealing portion S1 may be located at the end of the first conduit 111a. For example, the internal sealing portion S1 may be located at the upper end of the first conduit 111a. In this case, when two different fluid transport pipes 100, such as the first pipe P1 and the second pipe P2, are coupled, the internal sealing portion S1 may be interposed between the two first conduits 111a. Also, as shown in FIG. 11, the internal sealing portion S1 may be located at the end of the second conduit 111b. For example, the internal sealing portion S1 may be located at the upper end of the second conduit 111b. Therefore, when two different fluid transport pipes 100 are coupled, the internal sealing portion S1 may be interposed between the two second conduits 111b.

[0113] In particular, the internal sealing portion S1 may be formed in a ring shape and disposed over the entire upper end of the first conduit 111a and / or the second conduit 111b. Furthermore, when the first conduit 111a and the second conduit 111b are formed in a circular tubular shape, the internal sealing portion S1 may be configured in an O-ring shape. The internal sealing portion S1 may be made of an elastic material such as rubber, silicone, or urethane. Alternatively, the internal sealing portion S1 may include an adhesive material.

[0114] According to this embodiment of the present invention, the sealing performance between the first conduits 111a and / or between the second conduits 111b can be further improved when a plurality of fluid transport pipes 100 are connected together. Therefore, even when a fluid such as cooling water flows through the flow paths included in the plurality of fluid transport pipes 100, the leakage prevention performance can be more stably ensured.

[0115] In the fluid transport pipe 100 according to one embodiment of the present invention, the upper and lower ends of each conduit 111 can be configured to be fittable with each other.

[0116] For example, as shown in FIG. 12, when the lower end of the upper first conduit 111a is coupled to the upper end of the lower first conduit 111a between different fluid transport pipes 100 stacked in the vertical direction, the lower end of the upper first conduit 111a may be configured to fit into the upper end of the lower first conduit 111a. In this case, an end, e.g., the lower end, of the first conduit 111a may be configured to protrude downward in the coupling direction, as indicated by J1 in FIG. 12. A recess may be formed in the upper end of the first conduit 111a at a position and shape corresponding to the lower end protrusion J1 of the first conduit 111a. Therefore, when the first pipe P1 and the second pipe P2 are coupled in the vertical direction, the lower end protrusion J1 of the first conduit 111a of the first pipe P1 may be inserted into the upper end recess of the first conduit 111a of the second pipe P2 and fastened.

[0117] 12 shows the configuration of the first conduit 111a, the second conduit 111b may also be provided with such an insertion fastening configuration. That is, the upper and lower ends of the second conduit 111b may be configured to be interlocked with each other.

[0118] According to this embodiment of the present invention, the coupling strength and sealing strength between the conduits can be further improved when two fluid transport pipes 100 are connected to each other. For example, when cooling water flows through each conduit, the insertion and fastening configuration of the conduits can more reliably prevent leakage of the cooling water.

[0119] Furthermore, according to this embodiment, a complicated path for the fluid to escape to the outside may be formed at the connecting portion of the conduit 111. For example, a long, bent leakage path for the cooling water to leak to the outside from the first flow path H1 through the connecting portion of the conduit 111 may be formed. Therefore, the sealing performance of the connecting portion of each conduit may be further improved.

[0120] In this embodiment, the internal sealing portion S1 may be located at the insertion and fastening portion of each conduit. For example, as shown in Fig. 12, the internal sealing portion S1 may be interposed in the fastening portion between the lower end protrusion J1 of the first conduit 111a of the first pipe P1 and the upper end recess of the first conduit 111a of the second pipe P2.

[0121] In addition, the main housing 112 may be configured such that one end and the other end can be coupled to each other.

[0122] 9 to 11, two different fluid transport pipes 100 may be connected to each other in the longitudinal direction, and in this case, both longitudinal ends of the main housings 112 included in the two fluid transport pipes 100 may be configured to be connectable to each other. More specifically, in the embodiment of FIGS. 9 to 11, when a first pipe P1 and a second pipe P2 are stacked and connected in the vertical direction, the lower end of the main housing 112 of the first pipe P1 located in the upper layer and the upper end of the main housing 112 of the second pipe P2 located in the lower layer may be configured to be connectable to each other. Here, the first pipe P1 and the second pipe P2 may be formed in the same shape, and as a result, it can be said that the upper and lower ends of each pipe are configured to be connectable to each other.

[0123] According to this embodiment, the connection between the conduits can be stably maintained by the coupling configuration of the main housing 112. Therefore, the transport of fluid flowing along the internal flow path of each conduit can be stably performed. Furthermore, in this case, watertightness at the fastening portions of each conduit can be ensured, thereby more reliably preventing water leakage.

[0124] When two different main housings 112 are combined, various methods of combination between them may be used. For example, one main housing 112 may be configured to be insertable and fastened to another main housing 112. In this case, one end (e.g., the upper end) of the main housing 112 may be configured to protrude in the combination direction (e.g., upward) and be fitted into the other end (e.g., the lower end) of the main housing 112. Also, the main housing 112 may be configured to be hook-coupled to another main housing 112. For example, the main housing 112 may have a hook protrusion at its upper end and a hook groove at its lower end at a position and shape corresponding to the hook protrusion.

[0125] The main housing 112 may be configured to seal the internal hollow V when two different fluid transport pipes 100 are connected to each other. For example, the main housing 112 may have a hollow V formed therein, and the hollow V may be formed in a tubular shape with both ends open. In this case, both open ends of the main housing 112 may be formed in a ring shape. For example, the horizontal cross section of both open ends of the main housing 112 may be a substantially elliptical ring shape. Such a main housing 112 may be connected to the main housing 112 of another fluid transport pipe 100 with the ring-shaped open ends abutting against each other, sealing the internal hollow V. In this case, the internal space of the main housing 112 may be configured not to communicate with the external space. As a specific example, when the first pipe P1 and the second pipe P2 are connected as in the embodiment of FIGS. 9 to 11, the hollows of the first pipe P1 and the second pipe P2 may be communicated with each other to form a common hollow. However, such a common hollow may be configured to be sealed without communicating with the external spaces of the respective pipes (first pipe P1, second pipe P2).

[0126] According to this embodiment of the present invention, condensation prevention performance can be more effectively achieved. That is, according to this embodiment, when the plurality of fluid transport pipes 100 are connected to each other, the hollow V of the main housing 112 is sealed, so that outside air cannot easily flow into the inside of the main housing 112. Therefore, even in a situation where the humidity outside the main housing 112 is high, the internal space of the main housing 112 can maintain a low humidity. Therefore, it is possible to prevent condensation from occurring on the outer surfaces of the first conduit 111a and the second conduit 111b inside the hollow V of the main housing 112.

[0127] Furthermore, according to this embodiment, the heat insulating performance of the air layer between the main housing 112 and each of the conduits (first conduit 111a, second conduit 111b) located in the hollow of the main housing 112 and the air layer between the conduits (first conduit 111a, second conduit 111b) themselves is more stably maintained. Therefore, the problem of condensation occurring on the outer surface of the main housing 112 can be more effectively prevented.

[0128] The main housing 112 may include a cover portion, such as a portion indicated by E in Fig. 11. Here, the cover portion E may be provided on at least one side end of the main housing 112. For example, the cover portion E may be provided on the upper end of the main housing 112.

[0129] The cover portion E may be configured to extend further in the coupling direction than the first conduit 111a and the second conduit 111b. For example, referring to Figures 9 to 11, the cover portion E may protrude further upward than the first conduit 111a and the second conduit 111b. As another example, the cover portion E may be provided at the lower end of the main housing 112 and protrude further downward than the lower ends of the first conduit 111a and the second conduit 111b.

[0130] In particular, when two fluid transport pipes 100 are coupled to each other, the cover part E may be configured to enclose a part of the main housing 112 of the other fluid transport pipe 100. For example, as shown in Figures 9 to 11, the cover part E located on the upper end side of the second pipe P2 may be configured to enclose the outside of the lower end part of the main housing 112 of the first pipe P1.

[0131] According to this embodiment of the present invention, the cover part E facilitates the fitting of the two main housings 112 together. Therefore, the connecting force between the two fluid transport pipes 100 can be stably secured. Furthermore, according to this embodiment, the cover part E guides the connection of the two main housings 112. Therefore, the operation of connecting multiple fluid transport pipes 100 can be performed more easily. Furthermore, according to this embodiment, the cover part E can further improve the sealing force of the hollow formed inside the main housing 112 between the two fluid transport pipes 100. Therefore, the condensation prevention performance can be further improved.

[0132] Meanwhile, in the above-described embodiment, the hollow of the main housing 112 is mainly described as being open at both ends. However, the hollow of the main housing 112 in each fluid transport pipe 100 may be sealed. For example, in a fluid transport pipe 100 according to one aspect of the present invention, only the first conduit 111a and the second conduit 111b may be open at both ends, while the main housing 112 may be closed at both ends. In this case, the insulating performance of the air layer provided by the hollow V is more stably ensured. Furthermore, even if condensation occurs inside the hollow of the main housing 112, the condensation is prevented from being discharged to the outside of the fluid transport pipe 100, thereby preventing various problems such as short circuits and fires. Furthermore, since a separate hollow V is formed for each fluid transport pipe 100, even if a crack or the like occurs in a specific fluid transport pipe 100 and the sealing state of the hollow V is released, the sealing state of the hollow V of the other fluid transport pipes 100 can be maintained.

[0133] The fluid transport pipe 100 according to one embodiment of the present invention may further include an external sealing portion, which will be described in more detail with further reference to FIG.

[0134] FIG. 13 is an enlarged view of the A7 portion of FIG.

[0135] 11 and 13, the fluid transport pipe 100 according to an embodiment of the present invention may further include an external sealing portion provided on the outer surface of the end of the main housing 112. More specifically, in the embodiment of FIG. 13, an external sealing portion, designated S2, may be provided at the lower end of the main housing 112 of the first pipe P1. The external sealing portion S2 may be formed in a ring shape and configured to surround the outside of the main housing 112. The external sealing portion S2 may be made of an elastic material such as rubber, silicone, or urethane. The external sealing portion S2 may also include an adhesive material. Furthermore, as shown in FIG. 13, two or more external sealing portions S2 may be provided spaced apart from each other in the coupling direction of the fluid transport pipe 100, for example, in the vertical direction (Z-axis direction).

[0136] According to this embodiment of the present invention, the sealing force of the hollow V can be further improved at the joint of the main housing 112. Therefore, the heat insulating performance of the air layer formed by the hollow V can be more stably ensured, and the condensation prevention effect can be further improved.

[0137] Furthermore, if the main housing 112 is provided with a cover portion E, the external sealing portion S2 may be provided at a portion that is coupled with the cover portion E. For example, the external sealing portion S2 may be located at a portion of the first pipe P1 that is inserted into the cover portion E of the second pipe P2. In this case, the external sealing portion S2 may contact the inner surface of the cover portion E of the second pipe P2.

[0138] Also, the external sealing part S2 may be disposed in a form inserted inward from the outer surface of the main housing 112. In this case, a ring-shaped groove into which the external sealing part S2 is inserted may be formed on the outer surface of the main housing 112. For example, as shown in the embodiments of FIGS. 11 and 13, a groove recessed horizontally inward toward the hollow may be formed on the outer surface of the main housing 112. This groove may be formed on at least a portion of the outer surface of the main housing 112. In particular, the groove may be formed in a form surrounding the outer surface of the main housing 112. The O-ring-shaped external sealing part S2 may be inserted into this groove.

[0139] According to this embodiment of the present invention, the position of the external sealing portion S2 is stably maintained on the outer surface of the main housing 112. In particular, movement of the external sealing portion S2 can be prevented when two fluid transport pipes 100 are connected, thereby further improving the sealing performance of the external sealing portion S2.

[0140] At least a portion of the fluid transport pipe 100 according to one embodiment of the present invention may be manufactured by injection molding. For example, the main pipe 110, particularly the first conduit 111a, the second conduit 111b, and the main housing 112, may be manufactured in an integrated form using injection molding. In particular, the fluid transport pipe 100 according to one embodiment of the present invention can be manufactured relatively easily using injection molding to form a double pipe structure that can prevent condensation.

[0141] 14 is a cross-sectional view that schematically shows a partial configuration of a fluid transport pipe 100 according to still another embodiment of the present invention. For example, FIG. 14 shows a modified example of the configuration in FIG.

[0142] 14, the first conduit 111a and the second conduit 111b may be configured to have different distances from the inner surface of the main housing 112. More specifically, in the embodiment of FIG. 14, when the horizontal distance (left-right distance) between the outer surface of the first conduit 111a and the left inner surface of the main housing 112 is F1 and the horizontal distance (left-right distance) between the outer surface of the second conduit 111b and the right inner surface of the main housing 112 is F2, F1 may be designed to be longer than F2. In this embodiment, the first conduit 111a is configured to be farther away from the inner surface of the main housing 112 than the second conduit 111b. In this embodiment, the outer hollow (V11) around the first conduit 111a is wider than the outer hollow (V12) around the second conduit 111b.

[0143] According to this embodiment, the thermal insulation performance of the first conduit 111a and the thermal insulation performance of the second conduit 111b due to the hollows can be set to be different. That is, since the outer hollow (V11) of the first conduit 111a is formed wider than the outer hollow (V12) of the second conduit 111b, it can be said that the first conduit 111a has better thermal insulation performance than the second conduit 111b.

[0144] In particular, fluids of different temperatures may flow through the first conduit 111a and the second conduit 111b. For example, low-temperature coolant before cooling the battery may flow through the first conduit 111a, and high-temperature coolant after cooling the battery may flow through the second conduit 111b. Therefore, condensation is likely to occur on the outer left surface of the main housing 112 where the first conduit 111a is located. However, according to this embodiment, the thick insulating layer on the left side more reliably prevents condensation from occurring on the outer left surface of the main housing 112. That is, in this embodiment, low-temperature fluid flows through the portion where the air layer is wide, further improving condensation prevention performance.

[0145] The fluid transport pipe 100 according to one embodiment of the present invention may include a polymer material. For example, in the fluid transport pipe 100 according to one embodiment of the present invention, at least a portion of the main pipe 110 and the branch pipe 120 may be made of a polyamide (PA) material. However, the fluid transport pipe 100 according to one embodiment of the present invention is not limited to such a specific material and may include various other materials, for example, various other plastic materials.

[0146] The fluid transport pipe 100 according to one embodiment of the present invention may further include a thermal insulator, particularly a foamed thermal insulator. For example, the foamed thermal insulator may be made of a nitrile-butadiene rubber material. Such a thermal insulator may be attached to the outer surface of the main housing 112 to further improve the condensation prevention performance of the fluid transport pipe 100.

[0147] In particular, the main housing 112 may have a flat outer surface. More specifically, as shown in FIGS. 1 and 2, the main housing 112 may have flat front and rear surfaces and curved left and right sides. In this case, the foam insulation material can be easily attached to the outer surface of the main housing 112. This improves the processability of attaching the foam insulation material, and further enhances the effectiveness of the foam insulation in preventing condensation.

[0148] Furthermore, in the fluid transport pipe 100 according to one embodiment of the present invention, the branch pipe 120 may be configured to be detachable from the main pipe 110. This facilitates the process of attaching the insulating material to the exterior of the main pipe 110. That is, the insulating material may be attached to the exterior of the main pipe 110 in a manner that wraps around the exterior of the main pipe 110 when the branch pipe 120 is not attached to the main pipe 110. When attaching the insulating material in this manner, the exterior of the main pipe 110 does not have any protruding portions like the branch pipe 120, so the insulating material can be attached easily and precisely to the exterior of the main pipe 110. Furthermore, the branch pipe 120 may be attached to the main pipe 110 after the insulating material is attached to the exterior of the main pipe 110. This improves the ease of assembly of the branch pipe 120 and the main pipe 110, and the ease of assembly of the main pipe 110 and the insulating material. In this case, the insulating material can be attached to the main pipe 110 over a maximum area, thereby minimizing the exposed area of ​​the main pipe 110.

[0149] Furthermore, according to this embodiment, the insulation can be easily replaced. That is, if the insulation is damaged or broken during use of the fluid transport pipe 100, it needs to be replaced. In this case, the branch pipe 120 is first separated from the main pipe 110, the existing insulation is removed from the main pipe 110, and new insulation is attached to the main pipe 110. Then, after the attachment of the new insulation is completed, the branch pipe 120 is attached to the main pipe 110. In this case, the branch pipe 120 does not interfere with the removal of the existing insulation or the attachment of the new insulation, so the insulation replacement process can be easily performed.

[0150] 15 is an exploded perspective view that schematically shows a partial configuration of a fluid transport pipe 100 according to still another embodiment of the present invention. For example, Fig. 15 is an enlarged view of the configuration of part A8 in Fig. 2.

[0151] 15, the main pipe 110 may have a first fastening hole C1 formed therein. In particular, the first fastening hole C1 may be formed around the branch hole R of the main housing 112. A plurality of first fastening holes C1 may be provided and spaced apart at predetermined intervals along the periphery of the branch hole R. For example, three first fastening holes C1 may be arranged around the branch hole R. In this case, the three first fastening holes C1 may be arranged at predetermined angular intervals, i.e., 120° intervals, based on the center point of the branch hole R.

[0152] In this configuration, the branch pipe 120 may be configured to be boltable to the first fastening hole C1 of the main pipe 110. For example, as shown in FIG. 15 , the branch pipe 120 may have a second fastening hole C2 formed in a position and shape corresponding to the first fastening hole C1 of the main pipe 110. When the branch pipe 120 is attached to the main pipe 110, the second fastening hole C2 and the first fastening hole C1 may be communicated and fastened together by a common bolt (not shown). In another example, the branch pipe 120 may have a protrusion or hook that can be inserted into the first fastening hole C1 of the main pipe 110. The branch pipe 120 may be fixed to the main pipe 110 by inserting and fastening the protrusion or hook into the first fastening hole C1.

[0153] According to this embodiment of the present invention, it is possible to more easily assemble or separate the branch pipe 120 to or from the main pipe 110. In addition, in this case, the coupling force between the branch pipe 120 and the main pipe 110 is stably secured. In particular, when a plurality of first coupling holes C1 are formed at predetermined angles around the branch hole R, a uniform coupling force can be secured.

[0154] A sealing member (not shown) may further be included between the branch pipe 120 and the main pipe 110. For example, the sealing member may be provided in the form of an O-ring around the branch hole R of the main pipe 110 and / or around the connecting end of the branch pipe 120. Here, the sealing member may be made of an elastic material such as rubber, silicone, or urethane, or a foam material. According to this embodiment, the sealing performance at the connecting portion between the branch pipe 120 and the main pipe 110 may be further improved.

[0155] Fig. 16 is a perspective view that schematically shows the configuration of a fluid transport pipe 100 according to still another embodiment of the present invention, Fig. 17 is an exploded perspective view of the embodiment of Fig. 16, and Fig. 18 is a diagram that schematically shows a configuration in which two fluid transport pipes 100 of Fig. 16 are joined together. In this embodiment as well, differences from the above-mentioned embodiment will be mainly described.

[0156] 16 to 18, the fluid transport pipe 100 may be formed almost similarly to the fluid transport pipe 100 of FIGS. 1 to 15 described above, but may be formed in a flatter overall shape with almost no protruding portions from the outer surface. In particular, referring to the embodiment of FIG. 16, the fluid transport pipe 100 may be configured to have a flat surface with no protruding portions from one end to the other in the longitudinal direction (Z-axis direction), e.g., from the upper end to the lower end, except for the branch pipe 120. Furthermore, referring to the embodiments of FIGS. 11 and 12, the fluid transport pipe 100 has a cover portion E at the end side where the fluid transport pipes 100 are connected to each other, and the cover portion E is configured to protrude horizontally from the other surfaces. However, in the case of the fluid transport pipe 100 of the embodiment of FIG. 16, the connecting portion at the end side is also configured flat without protruding horizontally. Furthermore, as shown in the embodiment of FIG. 18, when two fluid transport pipes 100 (P3, P4) are connected to each other, the connecting portion does not protrude outward and maintains a flat state with the other surfaces of the main pipe 110 except for the branch pipe 120.

[0157] According to this embodiment of the present invention, the coupling side of the main pipe 110 in the fluid transport pipe 100 is formed flat and smooth, further improving processability when attaching foam insulation, etc. Also, in this configuration, the protruding portion from the main pipe 110 is removed or reduced, thereby expanding the area enclosed by the foam insulation or improving the sealing of the foam insulation, thereby further improving the insulating effect of the foam insulation. In addition to the advantages of appearance, this configuration can also minimize interference with other surrounding components by reducing the protruding portion on the outside of the fluid transport pipe 100.

[0158] 17, the branch pipe 120 may be configured to be detachable from the main pipe 110. Therefore, before the branch pipe 120 is attached to the main pipe 110, foam insulation or the like may be wrapped around the outside of the main pipe 110. In this case, if the outer surface of the main pipe 110 is formed flat as shown in FIG. 17, the process of attaching the insulation can be performed more smoothly.

[0159] 17, the branch pipe 120 may include a branch unit 121. Such a branch unit 121 may be configured to be detachable from the main pipe 110, particularly the main housing 112 of the main pipe 110. Here, the branch unit 121 may include a mounting part 121a and a conduit part 121b.

[0160] The mounting part 121a is a part to be placed on the surface of the main pipe 110, and may have a shape that makes it easy to place on the surface of the main pipe 110. For example, the mounting part 121a may be configured in a plate shape, and its inner surface may be configured so that it can be placed on the outer surface of the main housing 112 of the main pipe 110. Here, the inner surface of the mounting part 121a may be configured parallel to the outer surface of the main housing 112.

[0161] The conduit part 121b may have a hollow space therein, and the hollow space may serve as the branch flow path N. One end, for example, the inner end, of the conduit part 121b may be connected to the mounting part 121a. The conduit part 121b may extend from the mounting part 121a at a predetermined angle. That is, the extension direction of the conduit part 121b may be inclined at a predetermined angle, particularly an acute angle, with respect to the direction formed by the surface of the mounting part 121a. As a more specific example, when the plate-shaped mounting part 121a is upright in a state parallel to the Z axis, the conduit part 121b may be inclined at a 45° angle with the Z axis. According to this embodiment, as described above, the flow rate or flow velocity in the branch pipe 120 can be improved.

[0162] The mounting part 121a may be bolted to the main pipe 110, similar to the embodiment of Fig. 15. In this case, the mounting part 121a may be formed with a fastening hole having a shape similar to the second fastening hole C2 of Fig. 15 for bolt fastening.

[0163] In this embodiment, the mounting part 121a and the conduit part 121b may be integrally formed. For example, the mounting part 121a and the conduit part 121b may be integrally manufactured from a polyamide material by injection molding. However, the present invention is not necessarily limited to this configuration.

[0164] 15, a mounting groove G1 may be formed in the main pipe 110. The mounting groove G1 may be configured to allow the peripheral edge of the branch unit 121 of the branch pipe 120, particularly the mounting part 121a, to be mounted thereon. Furthermore, the mounting groove G1 may be configured to be recessed inward from other portions around the branch hole R of the main pipe 110. In this case, the mounting part 121a of the branch pipe 120 may be inserted and mounted in the mounting groove G1.

[0165] According to this embodiment of the present invention, the mounting groove G1 guides the attachment position of the branch pipe 120, thereby facilitating the assembly process of the branch pipe 120 to the main pipe 110. Furthermore, according to this embodiment, the mounting groove G1 can improve the bonding strength between the branch pipe 120 and the main pipe 110. For example, the mounting groove G1 can suppress movement of the branch pipe 120 in the left-right direction (X-axis direction) and the up-down direction (Z-axis direction) when the branch pipe 120 is attached around the branch hole R of the main pipe 110.

[0166] Furthermore, the branch pipe 120 may further include a cap unit 122 as shown in FIG.

[0167] The cap unit 122 may be made of a different material from that of the branching unit 121. In particular, the cap unit 122 may be made of a material having lower thermal conductivity than the branching unit 121. For example, the cap unit 122 may be made of a heat insulating material such as a rubber material or expanded foam. The cap unit 122 may be configured to enclose at least a portion of the branching unit 121 from the outside. The cap unit 122 may be fastened to the branching unit 121 in a fitting manner, or may be connected to the branching unit 121 or the main pipe 110 using a separate adhesive, bolts, or the like.

[0168] According to this embodiment of the present invention, the branch pipe 120 is configured in a double pipe form, thereby improving the heat insulation of the branch pipe 120. Therefore, the effect of suppressing condensation in the branch pipe 120 is further improved. Furthermore, according to this embodiment, the branch unit 121, which directly forms the branch flow path N, can be prevented from being damaged or broken by an external impact or object. Therefore, a more stable effect of preventing water leakage from the branch pipe 120 can be achieved. Furthermore, according to this embodiment, the branch unit 121 can be more firmly coupled to the main pipe 110 by the cap unit 122.

[0169] As shown in FIG. 17, the cap unit 122 may include a mounting cap 122a and a conduit cap 122b.

[0170] The mounting cap 122a may be configured to enclose the mounting part 121a of the branching unit 121 from the outside. For example, if the mounting part 121a is configured as a plate, the mounting cap 122a may also be configured as a substantially plate-like shape and configured to cover the outer surface of the mounting part 121a. In particular, the mounting cap 122a may enclose the entire outer surface of the mounting part 121a so that the mounting part 121a is not exposed to the outside. Therefore, the surface area of ​​the mounting cap 122a may be configured to be larger than the surface area of ​​the mounting part 121a. Furthermore, an accommodation groove capable of accommodating the mounting part 121a may be formed on the inner surface of the mounting cap 122a. In this case, the mounting cap 122a may be attached to the outer surface of the main pipe 110 with the mounting part 121a accommodated in the accommodation groove. In this case, the mounting cap 122a may be connected and fixed to the main pipe 110, for example, the main housing 112, by bolts, adhesive, or the like.

[0171] The conduit cap 122b may be configured to enclose the conduit part 121b of the branching unit 121 from the outside. In particular, since the conduit part 121b may be configured in a tubular shape, the conduit cap 122b may also be configured in a tubular shape. That is, the conduit cap 122b may have a hollow, into which the conduit part 121b may be inserted. In this case, the inner diameter of the hollow of the conduit cap 122b may be larger than the outer diameter of the conduit part 121b. In particular, the conduit cap 122b may enclose the entire outer surface of the conduit part 121b so that the conduit part 121b is not exposed to the outside. Therefore, the length of the conduit cap 122b may be equal to or greater than the length of the conduit part 121b. In this case, it can be said that the cap unit 122 is configured to enclose the entire branching unit 121 from the outside so that the branching unit 121 is not directly exposed to the outside, as shown in FIG. 16 .

[0172] In the cap unit 122, the mounting cap 122a and the conduit cap 122b may be integrally formed. That is, the mounting cap 122a and the conduit cap 122b may be made of the same material and manufactured in an integrated form. Furthermore, the conduit cap 122b may be configured to be inclined at a predetermined angle relative to the mounting cap 122a. That is, just as the conduit part 121b in the branching unit 121 is configured to be inclined at a predetermined angle relative to the mounting part 121a, the cap unit 122 may also be configured to be inclined at a predetermined angle relative to the mounting cap 122a to correspond to the inclined form of the branching unit 121. For example, the conduit cap 122b may be inclined at approximately 45° relative to the surface of the mounting cap 122a.

[0173] According to this embodiment of the present invention, the thermal insulation of the portion where the flow paths branch, i.e., the connection portion between the main pipe 110 and the branch pipe 120, can be more stably ensured. Therefore, the effect of suppressing condensation at such a flow path branch portion can be further improved. Also, according to this embodiment, the branch pipe 120 can be easily assembled to the main pipe 110. Furthermore, when the outside of the main housing 112 is covered with a thermal insulating material, the thermal insulating material can be more stably and tightly bonded to the outside of the main housing 112.

[0174] In addition, in this embodiment, the mounting cap 122a can prevent the bolts and the like connected to the mounting part 121a from being exposed to the outside, thereby minimizing corrosion and damage to the bolts and ensuring electrical insulation.

[0175] 15, when a mounting groove G1 is formed in the main pipe 110, the mounting cap 122a may be configured to entirely cover the mounting groove G1. In this case, the mounting groove G1 is prevented from being exposed to the outside, and the effect of preventing fluids or foreign matter from flowing in or out of the mounting groove G1 can be improved.

[0176] 19 is a diagram that schematically shows a partial configuration of the fluid transport pipe 100 according to one embodiment of the present invention. In particular, Fig. 19 shows an example of the configuration of the branch pipe 120 as viewed in the direction of arrow A9 in Fig. 16.

[0177] 19, the cap unit 122 may be configured to be at least partially spaced apart from the branch unit 121 by a predetermined distance. In particular, the conduit cap 122b of the cap unit 122 may be configured to be spaced apart from the conduit part 121b by a predetermined distance. Furthermore, the conduit cap 122b and the conduit part 121b may each be formed in the form of a hollow tube, and the inner diameter of the conduit cap 122b may be configured to be larger than the outer diameter of the conduit part 121b. In this case, a predetermined space may be formed between the inner surface of the conduit cap 122b and the outer surface of the conduit part 121b, as shown by the portion I in FIG. 19. In particular, the conduit part 121b and the conduit cap 122b may be configured to be spaced apart from each other by a predetermined distance as a whole. This space may be configured to completely surround the periphery of the conduit part 121b.

[0178] According to this embodiment of the present invention, an air layer may be formed between the cap unit 122 and the branch unit 121 as a heat insulating layer. This further improves the effect of suppressing condensation on the branch pipe 120. In addition, in this case, vibrations and impacts are less likely to be transmitted between the cap unit 122 and the branch unit 121, thereby preventing damage or breakage. For example, impacts applied to the cap unit 122 from the outside are not easily transmitted to the branch unit 121. In addition, vibrations generated when a cooling fluid flows inside the branch unit 121 are not easily transmitted to the cap unit 122. This improves the mechanical stability of the cap unit 122 and the branch unit 121.

[0179] Referring to the embodiment of FIG. 16 , the main housing 112 may be configured to be bolted to another main housing 112. For example, the main housing 112 may have bolt holes formed at corresponding positions on the upper and lower ends, as indicated by K. Therefore, as shown in FIG. 18 , when two fluid transport pipes 100 (P3, P4) are coupled in the vertical direction, the bolt holes K at the coupled portions may communicate with each other. Then, fastening members such as bolts may be inserted into the bolt holes K to connect and fix the two fluid transport pipes 100 (P3, P4) to each other. Furthermore, the portions of the main housing 112 where the bolt holes K are formed may be formed so as not to protrude outward. According to this embodiment, when attaching an insulating material to the fluid transport pipe 100, the insulating material may not get caught in the bolt holes K, improving processability.

[0180] 16, the main housing 112 may have a hook structure formed on the coupling end side. Therefore, when two main pipes 110 are coupled to each other in the longitudinal direction, the hook structures located on the end sides of the two main pipes 110 may be coupled to each other.

[0181] FIG. 20 is a diagram schematically illustrating a partial configuration of a cooling device according to another embodiment of the present invention.

[0182] 20, a cooling device according to an embodiment of the present invention includes a fluid transport pipe 100 according to an embodiment of the present invention. In particular, a cooling device according to an embodiment of the present invention may include a plurality of fluid transport pipes 100 according to an embodiment of the present invention. In this case, the plurality of fluid transport pipes 100 may be coupled in the longitudinal direction.

[0183] Furthermore, a combination of multiple fluid transport pipes 100, i.e., a pipe assembly, may be configured in a shape that is bent one or more times. For example, as shown in Fig. 20, a pipe assembly may be configured in a shape that is bent twice. In this case, the pipe assembly may have two portions extending vertically (in the Z-axis direction) and one portion extending horizontally (in the Y-axis direction). In this case, a bent pipe may be provided in the bent portion of the pipe assembly to connect fluid transport pipes 100 extending in different directions.

[0184] Between the plurality of fluid transport pipes 100, the hollows of the first conduits 111a and the hollows of the second conduits 111b may extend, and the open ends may be connected to each other so that a fluid, particularly cooling water, can flow through them.

[0185] Furthermore, as shown in FIG. 20 , a cooling device according to an embodiment of the present invention may further include one or more connecting pipes 200. The connecting pipes 200 may be directly or indirectly connected to the fluid transport pipe 100. For example, one end of the connecting pipe 200 may be directly connected to the branch pipe 120 of the fluid transport pipe 100, and the other end may be connected to an object to be cooled, such as a battery module. In this case, the connecting pipe 200 may be configured to supply cooling water supplied from the branch pipe 120 of the fluid transport pipe 100 to the battery module, or to transfer cooling water discharged from the battery module to the branch pipe 120 of the fluid transport pipe 100. Alternatively, the connecting pipe 200 may be configured to allow fluid to flow between different objects to be cooled. For example, the connecting pipe 200 may be connected between battery modules so that cooling water supplied to one battery module is transferred to the other battery module. Here, the connecting pipe 200 may be made of a polyamide material, but the present invention is not necessarily limited to such a material.

[0186] Furthermore, the cooling device according to an embodiment of the present invention may further include a cooling fluid supply unit (not shown) configured to supply a fluid, particularly cooling water, to the fluid transport pipe 100 according to an embodiment of the present invention. For example, the cooling device according to an embodiment of the present invention may further include a chiller as the cooling fluid supply unit.

[0187] FIG. 21 is a diagram schematically illustrating the configuration of an energy storage system according to yet another embodiment of the present invention.

[0188] 21, an energy storage system according to an embodiment of the present invention includes a fluid transport pipe 100 according to an embodiment of the present invention. Furthermore, the energy storage system according to an embodiment of the present invention may further include a plurality of fluid transport pipes 100 and a cooling fluid supply unit, as described above for the cooling device. That is, the energy storage system according to an embodiment of the present invention may include a cooling device according to an embodiment of the present invention as shown in FIG.

[0189] Furthermore, an energy storage system according to an embodiment of the present invention may include one or more battery modules 300. In particular, the energy storage system may include a plurality of battery modules 300, which may be electrically connected in series and / or parallel to each other. In this case, each battery module 300 may include a plurality of battery cells (secondary batteries).

[0190] Furthermore, the energy storage system according to an embodiment of the present invention may further include a rack frame 400 for storing one or more battery modules 300. For example, the energy storage system according to an embodiment of the present invention may include the rack frame 400 and store a plurality of battery modules 300 vertically and / or horizontally.

[0191] In addition, the energy storage system according to an embodiment of the present invention may further include a control unit for controlling or monitoring the charging and discharging operation of the battery module 300, measuring the temperature inside or outside the energy storage system, or controlling the cooling device according to an embodiment of the present invention.

[0192] In addition, the energy storage system according to an embodiment of the present invention may further include various components of an energy storage system known at the time of filing of the present invention, etc. For example, the energy storage system according to an embodiment of the present invention may further include a container for storing the components therein, as shown in FIG.

[0193] Meanwhile, terms indicating directions such as up, down, left, right, front, and back are used in this specification, but these terms are used for convenience of explanation, and it will be obvious to those skilled in the art that these terms may change depending on the position of the object of interest, the position of the observer, etc. Furthermore, although the terms "inside" and "outside" are used in this specification, unless otherwise specified, "inside" means the direction toward the center of each component, and "outside" means the opposite direction.

[0194] Although the present invention has been described above using limited embodiments and drawings, the present invention is not limited to these, and it goes without saying that various modifications and variations can be made by a person having ordinary knowledge in the technical field to which the present invention pertains within the technical spirit of the present invention and the scope of equivalents of the claims. [Explanation of symbols]

[0195] 100: Fluid transport piping 110: Main piping 111: Conduit 111a: 1st conduit, 111b: 2nd conduit 112: Main housing 120: Branch piping 121: Branch unit 121a: Mounting part, 121b: Conduit part 122: Cap Unit 122a: Mounting cap, 122b: Conduit cap 200: Connecting pipe 300: Battery module 400: Rack frame R: bifurcation H: Main channel H1: First flow path, H2: Second flow path N: Branch channel V:Hollow G1: Placement groove P1: 1st piping, P2: 2nd piping

Claims

1. a main pipe having a shape extending long in one direction, a main flow path formed therein in the longitudinal direction, and a branch hole formed in the middle of the main flow path; a branch pipe having a branch flow path formed therein and configured to be detachable to a portion of the main pipe where a branch hole is formed; Fluid transport piping including:

2. 2. The fluid transport pipe according to claim 1, wherein the branch pipe is configured to be connectable to the main pipe so that the extending direction of the branch flow path is inclined at an acute angle with respect to the extending direction of the main flow path.

3. The main pipe has a plurality of conduits therein, 3. The fluid transport pipe according to claim 1, wherein a plurality of the branch pipes are provided, and at least one of the branch pipes is detachably attached to each of the plurality of conduits.

4. 4. The fluid transport pipe according to claim 3, wherein the plurality of branch pipes are configured to be connectable to the plurality of conduits while being inclined in the same direction.

5. The fluid transport pipe according to claim 3 , wherein the main pipe further comprises a main housing having a hollow formed therein and configured to house a plurality of the conduits together in the hollow.

6. The fluid transport pipeline of claim 5 , wherein the plurality of conduits are configured to be at least partially spaced apart from the inner surface of the main housing.

7. 6. The fluid transport pipe according to claim 5, wherein the plurality of conduits are arranged in the hollow interior of the main housing so as to be spaced apart from one another by a predetermined distance.

8. 3. The fluid transport pipe according to claim 1, wherein the main pipe is configured so that both ends in the longitudinal direction of the main flow path are open.

9. The main pipe has a fastening hole formed around the branch hole, The fluid transport pipe according to claim 1 or 2, wherein the branch pipe is configured to be fastened with a bolt to a fastening hole of the main pipe.

10. The branch pipe includes a branch unit, The branching unit comprises: a mounting part to be placed on a surface of the main pipe; 3. The fluid transport piping according to claim 1, further comprising: a conduit part having a hollow formed as the branch flow path, one end of which is connected to the mounting part and which extends from the mounting part in a manner inclined at a predetermined angle.

11. The fluid transport pipe according to claim 10, wherein the main pipe has a mounting groove formed therein, on which the mounting part can be mounted.

12. The fluid transport pipe according to claim 10, wherein the branch pipe further comprises a cap unit made of a material having lower thermal conductivity than the branch unit, the cap unit being configured to enclose at least a portion of the branch unit from the outside.

13. The fluid transport pipe according to claim 12 , wherein the cap unit includes a mounting cap configured to enclose the mounting part from the outside, and a conduit cap configured to enclose the conduit part from the outside.

14. The fluid transport pipe according to claim 12 , wherein the cap unit is configured to be at least partially separated from the branching unit by a predetermined distance.

15. A cooling device comprising the fluid transport pipe according to claim 1 or 2.

16. An energy storage system comprising the fluid transport piping according to claim 1 or 2.

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