Busbar assembly
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2026-01-02
- Publication Date
- 2026-08-13
Smart Images
Figure KR2026000030_13082026_PF_FP_ABST
Abstract
Description
busbar assembly
[0001] The present invention relates to a busbar assembly, and more specifically, to a busbar assembly having a structure with improved cooling efficiency.
[0002] A busbar is a metal conductor used within switchboards or power facilities to transmit electricity, serving to efficiently distribute and connect currents. Busbars are generally manufactured from materials with high electrical conductivity, such as copper or aluminum.
[0003] In addition, the above materials have high thermal conductivity. Therefore, the busbar can also perform the role of cooling the device by receiving heat from the device coupled thereto and releasing the received heat to the outside.
[0004] Typically, busbars are cooled by air cooling. That is, since high-voltage current is generally carried through busbars, a method of exposing the busbar itself to the air for cooling is widely used to prevent accidents such as electrical leakage.
[0005] However, as is known, the heat capacity of air is smaller than that of fluids other than air, such as liquids. Therefore, the cooling effect of a busbar using air is inevitably lower compared to when it is cooled by liquids.
[0006] Accordingly, an immersion cooling method has been proposed to cool the busbar itself by immersing it in an insulating liquid. However, since the immersion cooling method requires waterproofing treatment not only for the busbar but also for the devices connected to it, it is not easy to implement.
[0007] In addition, in the case of the immersion cooling method, busbars and other components must be removed from the liquid for maintenance, which can also make maintenance inconvenient.
[0008] Accordingly, a cooling method for a busbar is required that effectively cools the busbar, allows for easy application of the cooling method, and enables easy maintenance of the busbar.
[0009] Korean Published Patent Document No. 10-2024-0124799 discloses a current measuring device and a current sensor. Specifically, it discloses a current measuring device and a current sensor in which the inner portion of a busbar is formed to have a latent portion located lower than the external connection portion, thereby enabling the heat of the busbar to be released from the lower surface of a substrate that is at a lower temperature than the mounting surface.
[0010] However, the current measuring device and current sensor disclosed in the aforementioned prior art are limited to providing a method for cooling busbars, etc. using only air. The aforementioned prior art fails to provide a method for cooling busbars, etc. using a fluid with a greater heat capacity than air.
[0011] Japanese Registered Patent Document No. 5514656 discloses a high-voltage device. Specifically, it discloses a high-voltage device having water cooling fins in direct contact with a plurality of busbars, and capable of cooling a plurality of busbars using cooling water flowing inside the water cooling fins.
[0012] However, the high-voltage device disclosed in the aforementioned prior art has a structure in which the cooling water flowing inside the water cooling fins exchanges heat with the busbar only through the water cooling fins. In other words, the prior art does not provide a method for cooling the busbar by having the cooling water come into direct contact with the busbar.
[0013] Korean Published Patent Document No. 10-2024-0124799 (August 19, 2024)
[0014] Japanese Registered Patent Document No. 5514656 (2014.04.04.)
[0015] The present invention is intended to solve the above-mentioned problems, and the objective of the present invention is to provide a busbar assembly with a structure that can improve cooling efficiency.
[0016] Another objective of the present invention is to provide a busbar assembly having a structure in which a cooling medium is in direct contact with the busbar to cool the busbar.
[0017] Another objective of the present invention is to provide a busbar assembly having a structure in which a structure for cooling the busbar can be easily applied.
[0018] Another objective of the present invention is to provide a busbar assembly having a structure that facilitates maintenance of the busbar and other devices combined therewith.
[0019] Another objective of the present invention is to provide a busbar assembly with a structure that prevents leakage of a cooling medium.
[0020] The problems of the present invention are not limited to those mentioned above, and other unmentioned problems will be clearly understood by a person skilled in the art to which the present invention pertains from the description below.
[0021] According to one aspect of the present invention, a busbar assembly is provided, comprising a plurality of main busbars electrically connected to the outside, wherein the main busbars include: a main body extending in a first direction; a main channel formed inside the main body and fluidly connected to the outside through which a cooling fluid for cooling the main body flows; and a main through hole formed through the main body and communicating with the main channel to the outside.
[0022] At this time, a busbar assembly may be provided, comprising a pipe member that is coupled to each of the plurality of main busbars and communicates with each of the main flow paths of the plurality of main busbars.
[0023] Additionally, the main flow path extends in the first direction, and each end of the extension direction is formed open to define the main through hole, and a plurality of the main busbars are spaced apart along the first direction, such that one of the main busbars is positioned on one side of the first direction and the other of the main busbars is positioned on the other side of the first direction, and the pipe member includes a connecting pipe member that is coupled to and communicates with a plurality of main through holes formed at each end of the plurality of main busbars facing each other. A busbar assembly may be provided.
[0024] At this time, a busbar assembly may be provided in which the main flow paths are provided in plurality, the plurality of main flow paths are spaced apart along a second direction orthogonal to the first direction, and the pipe member includes a circulation pipe member that is respectively connected to the other end of a pair of main flow paths located adjacently along the second direction.
[0025] Additionally, a busbar assembly may be provided in which the cooling fluid is introduced into one of the main flow paths through the connecting pipe member and flows out into another of the main flow paths through the circulation pipe member.
[0026] At this time, a busbar assembly may be provided that includes a plurality of main busbars and a sub-busbar that is electrically connected to each of them.
[0027] Additionally, the busbar assembly may be provided, wherein the sub-busbar comprises: a sub-body each coupled to an end of a plurality of main busbars facing each other; and a sub-flow path formed inside the sub-body and fluidically connected to the main flow path to form a part of the flow path of the cooling fluid.
[0028] At this time, the busbar assembly may be provided such that the sub-busbar includes a sub-through hole formed through one surface of the sub-body facing the main busbar and communicating with the outside of the sub-flow channel, and the sub-through hole is positioned to overlap at least partially with the end of the main flow channel in the first direction along a third direction orthogonal to the first direction.
[0029] Additionally, a busbar assembly may be provided in which the sub-flow channel extends along the first direction and the sub-through holes are provided in plurality, such that the plurality of sub-through holes are located adjacent to each end of the sub-flow channel.
[0030] At this time, a busbar assembly may be provided in which the main through hole is formed through one surface of the main body facing the sub-busbar, thereby communicating with the main flow path and the outside.
[0031] Additionally, a busbar assembly may be provided in which the sub-through hole located on one side of the first direction is arranged to overlap with the main through hole formed in any one of the plurality of main busbars, and the sub-through hole located on the other side of the first direction is arranged to overlap with the main through hole formed in another of the plurality of main busbars.
[0032] At this time, a busbar assembly may be provided, comprising a sealing member positioned between the main body and the sub body, and configured to seal the main through hole and the sub through hole by surrounding them radially outward.
[0033] Additionally, a busbar assembly may be provided in which the main through hole is located on one side of the first direction and is formed through one surface in the thickness direction of the main body.
[0034] At this time, a busbar assembly may be provided in which the main through holes are formed in multiple numbers, and the multiple main through holes are spaced apart in a direction inclined with respect to the height direction of the main body and the first direction, respectively.
[0035] According to the above configuration, the cooling efficiency of the busbar assembly according to the embodiment of the present invention can be improved.
[0036] In addition, according to the above configuration, the busbar assembly according to an embodiment of the present invention can cool the busbar by having a cooling medium in direct contact with the busbar.
[0037] In addition, according to the above configuration, a structure for cooling the busbar can be easily applied to the busbar assembly according to the embodiment of the present invention.
[0038] In addition, according to the above configuration, the busbar assembly according to the embodiment of the present invention may facilitate maintenance of the busbar and other devices coupled thereto.
[0039] In addition, according to the above configuration, leakage of the cooling medium can be prevented in the busbar assembly according to the embodiment of the present invention.
[0040] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.
[0041] FIG. 1 is a perspective view illustrating a busbar assembly according to one embodiment of the present invention.
[0042] FIG. 2 is an exploded perspective view illustrating the busbar assembly of FIG. 1.
[0043] FIG. 3 is a perspective view illustrating the main busbar of the busbar assembly of FIG. 1.
[0044] Figure 4 is a BB perspective cross-sectional view illustrating the main busbar of Figure 3.
[0045] FIG. 5 is an AA perspective cross-sectional view illustrating the busbar assembly of FIG. 1.
[0046] Figure 6 is an enlarged view of part A of Figure 5.
[0047] Figure 7 is an enlarged view of part B of Figure 5.
[0048] FIG. 8 is a perspective view illustrating a busbar assembly according to another embodiment of the present invention.
[0049] FIGS. 9 and 10 are exploded perspective views illustrating the busbar assembly of FIG. 8.
[0050] FIG. 11 is a perspective view illustrating the main busbar of the busbar assembly of FIG. 8.
[0051] FIG. 12 is a DD perspective cross-sectional view illustrating the main busbar of FIG. 11.
[0052] FIG. 13 is an EE perspective cross-sectional view illustrating the main busbar of FIG. 11.
[0053] Figure 14 is an enlarged view of section C (a) and section D (b) of Figure 13.
[0054] FIG. 15 is a perspective view illustrating a sub-busbar of the busbar assembly of FIG. 8.
[0055] Fig. 16 is an exploded perspective view of the sub-busbar of Fig. 15.
[0056] FIG. 17 is a front view illustrating the sub-busbar of FIG. 15.
[0057] FIG. 18 is an FF perspective cross-sectional view illustrating the sub-busbar of FIG. 15.
[0058] FIG. 19 is a cross-sectional view of FIG. 16 illustrating the sub-busbar.
[0059] FIG. 20 is a CC perspective cross-sectional view illustrating the busbar assembly of FIG. 8.
[0060] Figure 21 is an enlarged view of section E of Figure 20.
[0061] FIG. 22 is a perspective view illustrating a busbar assembly according to another embodiment of the present invention.
[0062] FIG. 23 is a perspective view illustrating the combined structure of the busbar assembly of FIG. 22.
[0063] FIG. 24 is a graph illustrating the temperature distribution of a busbar assembly according to an embodiment of the present invention.
[0064] FIG. 25 is a graph showing the temperature distribution of a busbar assembly according to the prior art (a) and the temperature distribution of a busbar assembly according to an embodiment of the present invention (b).
[0065] Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein. To clearly explain the present invention, parts unrelated to the description in the drawings have been omitted, and the same reference numerals have been used throughout the specification for identical or similar components.
[0066] The words and terms used in this specification and claims are not limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention in accordance with the principles by which the inventor defines terms and concepts to best describe his invention.
[0067] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings correspond to preferred embodiments of the present invention and do not represent all technical ideas of the present invention; thus, various equivalents and modifications that may replace such configurations may exist at the time of filing the present invention.
[0068] In the following description, descriptions of some components may be omitted to clarify the features of the present invention.
[0069]
[0070] In the following description, the term "connection" refers to one or more members being connected to each other in a manner that allows for fluid communication. In one embodiment, the connection may be formed by members such as a conduit, a pipe, or a piping system. In the following description, the term "connection" may be used interchangeably with the meaning that one or more members are "fluidly connected" to each other.
[0071] In the following description, the term "conduction" means that one or more components are connected to each other to transmit current or electrical signals. In one embodiment, the conduction may be formed in a wired form by a conductor member, etc., or in a wireless form such as Bluetooth, Wi-Fi, or RFID. In one embodiment, the conduction may include the meaning of "communication."
[0072] As used in the following description, the term "fluid" refers to any form of substance that flows due to an external force and whose shape or volume, etc., can be deformed. In one embodiment, the fluid may be a liquid such as water or a gas such as air.
[0073] As used in the following description, the term "cooling fluid" refers to any fluid capable of cooling said composition by receiving heat from said composition and releasing the received heat to the outside. In one embodiment, the cooling fluid may be cooling water or cooling oil.
[0074] The terms "upper side," "lower side," "left side," "right side," "front side," and "rear side" used in the following description shall be understood by referring to the coordinate system depicted throughout the attached drawings.
[0075]
[0076] Referring to FIGS. 1 to 7, a busbar assembly (10) according to one embodiment of the present invention is illustrated as an example. The busbar assembly (10) according to an embodiment of the present invention can be combined with an external device and electrically connected.
[0077] The busbar assembly (10) can receive power from one or more devices and transfer the received power to one or more other devices.
[0078] At this time, the busbar assembly (10) can receive heat from the device. In addition, as current is continuously passed through the busbar assembly (10), heat may also be generated within the busbar assembly (10) itself.
[0079] Accordingly, the busbar assembly (10) according to an embodiment of the present invention is configured such that a cooling fluid comes into direct contact with a heat-generating component to cool the component. At this time, the cooling fluid may flow within the component but may not be exposed to the outside.
[0080] Accordingly, the structure of the busbar assembly (10) can be simplified compared to the case where a cooling fluid is provided from the outside of the busbar assembly (10). At the same time, the cooling efficiency of the busbar assembly (10) can also be improved.
[0081] In the illustrated embodiment, the busbar assembly (10) includes a main busbar (100), a sub-busbar (200), and a pipe member (300).
[0082] The main busbar (100) constitutes a part of the busbar assembly (10). The main busbar (100) is a configuration in which the busbar assembly (10) is connected to an external device. The main busbar (100) is electrically connected to an external device. The main busbar (100) receives power from an external device and can transmit power to another external device.
[0083] The main busbar (100) is coupled with the sub-busbar (200). In an embodiment where multiple main busbars (100) are provided, the multiple main busbars (100) can be coupled by the sub-busbar (200) and electrically connected. In the illustrated embodiment, one side of the main busbar (100) in the thickness direction, that is, a portion of the rear side, is coupled with the sub-busbar (200) and electrically connected.
[0084] The main busbar (100) is coupled with a pipe member (300). The main busbar (100) can receive cooling fluid through the pipe member (300). As described below, a space (i.e., the main flow path (120) described below) is formed inside the main busbar (100) so that the received cooling fluid can flow.
[0085] Multiple main busbars (100) may be provided. Multiple main busbars (100) may be spaced apart and connected to sub-busbars (200) at different locations. Multiple main busbars (100) may be electrically connected to each other through sub-busbars (200).
[0086] Additionally, a plurality of main busbars (100) are fluidly connected to each other by a part of a pipe member (300) (i.e., a connecting pipe member (310) to be described later). Cooling fluid supplied to one main busbar (100) can flow to another main busbar (100) through the pipe member (300).
[0087] In the illustrated embodiment, the main busbar (100) is configured to include a first main busbar (101) and a second main busbar (102). The first main busbar (101) is located on one side of the main busbar (100) in the longitudinal direction, on the left side in the illustrated embodiment. The second main busbar (102) is located on the other side of the main busbar (100) in the longitudinal direction, on the right side in the illustrated embodiment.
[0088] At this time, each end of the first main busbar (101) and the second main busbar (102) facing each other can be electrically connected by being coupled with a sub-busbar (200). In the illustrated embodiment, the right end of the first main busbar (101) and the left end of the second main busbar (102) are each electrically connected by being coupled with a sub-body (210).
[0089] Either one of the first main busbar (101) and the second main busbar (102) may be fluidically connected to the outside to receive cooling fluid. The provided cooling fluid may be supplied to the other of the first main busbar (101) and the second main busbar (102).
[0090] Additionally, the cooling fluid provided to the other of the first main busbar (101) and the second main busbar (102) can be provided again to either the first main busbar (101) or the second main busbar (102) and flow out to the outside.
[0091] In the illustrated embodiment, it is assumed that a cooling fluid is supplied from the outside to the second main busbar (102), flows through the first main busbar (101) via the connecting pipe member (310), and then flows out to the outside again through the second main busbar (102).
[0092] In any case, it is sufficient if the cooling fluid provided from the outside flows inside the main busbar (100) and can cool the main busbar (100).
[0093] The first main busbar (101) and the second main busbar (102) differ in their placement locations, but their structure and function are identical. Accordingly, the description of the common parts below will refer collectively to the first main busbar (101) and the second main busbar (102) as the main busbar (100).
[0094] In the illustrated embodiment, the main busbar (100) includes a main body (110), a main flow path (120), and a main through hole (130).
[0095] The main body (110) forms the outer shape of the main busbar (100). Other components of the main busbar (100) may be formed or combined with the main body (110). In the illustrated embodiment, a main flow path (120) is formed inside the main body (110). A main through hole (130) is formed on the outer side of the main body (110).
[0096] The main body (110) is coupled to the sub-busbar (200). The main body (110) can be coupled to the sub-body (210) and electrically connected. In the illustrated embodiment, the rear side portion of one longitudinal end of the main body (110) is coupled to the sub-body (210) and electrically connected.
[0097] The main body (110) is coupled with a pipe member (300). Specifically, a connecting pipe member (310) and a circulation pipe member (320) are respectively coupled to a main through hole (130) formed on the outer side of the main body (110). The main body (110) can support the coupled connecting pipe member (310) and circulation pipe member (320).
[0098] The main body (110) may be any shape that can be combined with a sub-bus bar (200) and a pipe member (300), and formed with other configurations of the main bus bar (100). In the illustrated embodiment, the main body (110) is formed as a polygonal plate having a length in the left-right direction, a height in the up-down direction, and a thickness in the front-back direction.
[0099] The main body (110) may be formed from a material with high electrical and thermal conductivity. In one embodiment, the main body (110) may be formed from copper (Cu), aluminum (Al), or an alloy material containing the same.
[0100] A main Euro (120) is formed through the interior of the main body (110).
[0101] The main channel (120) is a space through which the provided cooling fluid flows within the main body (110). The main channel (120) is formed through the interior of the main body (110). In the illustrated embodiment, the main channel (120) is formed extending in the longitudinal direction of the main body (110), and in the left-right direction in the illustrated embodiment.
[0102] Each end of the extension direction of the main flow path (120), the left and right sides in the illustrated embodiment, are each formed open. Each end of the extension direction of the main flow path (120) can be defined as a main through hole (130).
[0103] Each side of the radial direction of the main flow path (120), in the illustrated embodiment, the front side, rear side, upper side, and lower side, is enclosed and closed by the inner circumference of the main body (110). Accordingly, the cooling fluid flows into one end of the main flow path (120) in the extensional direction and then flows out through the other end, while flow in other directions can be blocked.
[0104] The cooling fluid flowing in the main channel (120) comes into direct contact with the inner circumference of the main body (110) and can receive heat. Accordingly, the main body (110) and other devices connected thereto can be cooled.
[0105] The main channel (120) may be of any shape capable of forming a path for the cooling fluid to flow. In the illustrated embodiment, the main channel (120) is formed as a cylindrical space having a circular cross-section and a length in the left-right direction. Each end of the main channel (120) in the extension direction is formed open and defined as a main through hole (130).
[0106] Multiple main channels (120) may be formed. Multiple main channels (120) may be spaced apart in the height direction of the main body (110), and in the vertical direction in the illustrated embodiment. Multiple main channels (120) may be physically separated from each other to form a channel for the cooling fluid.
[0107] In the illustrated embodiment, a total of four main channels (120) are formed and spaced apart in the vertical direction. At this time, one of the pair of main channels (120) located on the upper side may be configured as an inlet channel for cooling fluid, and the other as an outlet channel for cooling fluid. Similarly, one of the pair of main channels (120) located on the lower side may be configured as an inlet channel for cooling fluid, and the other as an outlet channel for cooling fluid.
[0108] The main through hole (130) is configured to communicate with the outside of the main flow path (120). The main through hole (130) may be combined with a pipe member (300) to form an inlet or outlet flow path for cooling fluid. The main through hole (130) is defined as each end in the extension direction of the main flow path (120) and communicates with the inside and outside of the main flow path (120).
[0109] The main through hole (130) may have a shape corresponding to the shape of the main flow path (120). In the illustrated embodiment, the main through hole (130) is formed as a disc-shaped space having a circular cross-section and a thickness in the left-right direction.
[0110] A plurality of main through holes (130) may be formed. A plurality of main through holes (130) may each be formed at each end of the extension direction of the main flow path (120). In the illustrated embodiment, the main through holes (130) include a first main through hole (131) and a second main through hole (132).
[0111] The first main through hole (131) forms one side of the extension direction of the main flow path (120), the left end in the illustrated embodiment. The first main through hole (131) is a configuration that is coupled with the pipe member (300).
[0112] Additionally, the second main through hole (132) forms the other side of the extension direction of the main flow path (120), the right end in the illustrated embodiment. The second main through hole (132) is another configuration that is coupled with the pipe member (300).
[0113] The first main through hole (131) and the second main through hole (132) can each form an inlet and outlet path for a cooling fluid. At this time, the first main through hole (131) and the second main through hole (132) formed in the first main busbar (101) and the second main busbar (102) can be configured to perform different roles.
[0114] Specifically, the first main through hole (131) formed in the first main bus bar (101) is connected to and communicates with the circulation pipe member (320). Cooling fluid flowing along one main flow path (120) can be discharged to another main flow path (120) through the circulation pipe member (320) connected to the first main through hole (131).
[0115] Additionally, the second main through hole (132) formed in the first main bus bar (101) is connected to and communicates with the connecting pipe member (310). Cooling fluid flowing along one of the main flow paths (120) of the second main bus bar (102) can be introduced into the main flow path (120) of the first main bus bar (101) through the connecting pipe member (310) connected to the second main through hole (132).
[0116] Additionally, the cooling fluid flowing through the main flow path (120) of the first main busbar (101) can be discharged into the main flow path (120) of the second main busbar (102) through a connecting pipe member (310) combined with the second main through hole (132).
[0117] The first main through hole (131) formed in the second main busbar (102) is coupled with the connecting pipe member (310). Cooling fluid flowing in the main flow path (120) of the second main busbar (102) can be discharged to the main flow path (120) of the first main busbar (101) through the connecting pipe member (310).
[0118] Additionally, the cooling fluid flowing from the main flow path (120) of the first main busbar (101) can be introduced into the main flow path (120) of the second main busbar (102) through a connecting pipe member (310) combined with the first main through hole (131).
[0119] A sub-busbar (200) combines multiple main busbars (100) together. Each sub-busbar (200) can be electrically connected to a plurality of main busbars (100).
[0120] In the illustrated embodiment, the sub-busbar (200) is positioned between the first main busbar (101) and the second main busbar (102) and is arranged to overlap at least partially in the thickness direction of the main body (110).
[0121] That is, the sub-busbar (200) is electrically connected to the right end of the first main busbar (101) and the left end of the second main busbar (102), respectively.
[0122] The sub-busbar (200) can support a portion of the pipe member (300). In the illustrated embodiment, the sub-busbar (200) can support the connecting pipe member (310) at the rear side.
[0123] In the illustrated embodiment, the sub-busbar (200) includes a sub-body (210).
[0124] The sub-body (210) forms the outer shape of the sub-busbar (200). The sub-body (210) is the part where the sub-busbar (200) is combined with the main body (110) and electrically connected.
[0125] The sub-body (210) may be of any shape that can be combined with the main body (110) and electrically connected. In the illustrated embodiment, the sub-body (210) is formed as a polygonal plate having a length in the left-right direction, a height in the up-down direction, and a thickness in the front-back direction.
[0126] The subbody (210) may be formed from a material having high electrical and thermal conductivity. In one embodiment, the subbody (210) may be formed from copper, aluminum, or an alloy material containing the same.
[0127] The pipe member (300) forms a passage through which a cooling fluid flows to cool the main busbar (100) or the sub-busbar (200). The pipe member (300) fluidically connects a plurality of main flow paths (120) to each other.
[0128] At this time, the pipe member (300) can fluidly connect the main flow path (120) formed in the first main busbar (101) and the main flow path (120) formed in the second main busbar (102). Additionally, the pipe member (300) can fluidly connect the main flow paths (120) formed in the first main busbar (101) or fluidly connect the main flow paths (120) formed in the second main busbar (102).
[0129] The pipe member (300) is coupled to the main through hole (130). The pipe member (300) can be fluidically connected to the main through hole (130) to form an inlet or outlet path for cooling fluid.
[0130] The pipe member (300) may be of any shape capable of fluidically connecting a plurality of main channels (120). In the illustrated embodiment, the pipe member (300) is in the shape of a tube or pipe having a circular cross-section and a hollow formed through it.
[0131] In the illustrated embodiment, the pipe member (300) includes a connecting pipe member (310) and a circulating pipe member (320).
[0132] The connecting pipe member (310) fluidically connects the main flow path (120) of the first main busbar (101) and the main flow path (120) of the second main busbar (102). The connecting pipe member (310) forms a flow path for cooling fluid flowing out of either the main flow path (120) of the first main busbar (101) or the main flow path (120) of the second main busbar (102) to flow into the other.
[0133] Therefore, it can be said that the connecting pipe member (310) fluidly connects the first main busbar (101) and the second main busbar (102).
[0134] The connecting pipe member (310) is coupled with the main through hole (130) and fluidly connected to the main flow path (120). Specifically, the connecting pipe member (310) is coupled with the second main through hole (132) of the first main busbar (101) and the first main through hole (131) of the second main busbar (102), respectively.
[0135] The connecting pipe member (310) may have a shape corresponding to the shape of the main through hole (130). In the illustrated embodiment, the connecting pipe member (310) has an annular cross-section and is in the shape of a circular tube with a length in the left-right direction.
[0136] A plurality of connecting pipe members (310) may be provided. A plurality of connecting pipe members (310) may each be coupled to a plurality of main through holes (130) to fluidly connect a plurality of main flow paths (120).
[0137] In the illustrated embodiment, four connecting pipe members (310) are provided and spaced apart in the vertical direction. Each connecting pipe member (310) fluidly connects a pair of main flow paths (120) that are positioned facing each other in the longitudinal direction of the main body (110).
[0138] The circulation pipe member (320) fluidly connects the main flow paths (120) of the first main busbar (101) or the main flow paths (120) of the second main busbar (102). The circulation pipe member (320) is configured to fluidly connect a plurality of main flow paths (120) provided in one main busbar (100) to one another.
[0139] Therefore, it can be said that the circulation pipe member (320) constitutes a circulation path for the cooling fluid.
[0140] In the illustrated embodiment, the circulation pipe member (320) is coupled to the first main through hole (131) of the first main busbar (101). The circulation pipe member (320) fluidly connects a pair of main passages (120) formed adjacent to each other among a plurality of main passages (120) formed in the first main busbar (101).
[0141] A plurality of circulation pipe members (320) may be provided. A plurality of circulation pipe members (320) may be combined with a plurality of main through holes (130) to connect a plurality of main flow paths (120) respectively.
[0142] In the illustrated embodiment, two circulation pipe members (320) are provided. One of the circulation pipe members (320) is coupled with a pair of first main through holes (131) located on the upper side to fluidically connect a pair of main flow paths (120) located on the upper side.
[0143] Another circulation pipe member (320) is combined with another pair of second main through holes (132) located on the lower side, fluidly connecting another pair of main flow paths (120) located on the lower side.
[0144] The circulation pipe member (320) may be of any shape capable of fluidically connecting adjacent main channels (120). In the illustrated embodiment, the circulation pipe member (320) is formed with a hollow interior and extends in an arc shape.
[0145] Accordingly, in the illustrated embodiment, the cooling fluid introduced into one of the main flow paths (120) of the second main busbar (102) is discharged into one of the main flow paths (120) of the first main busbar (101) through the connecting pipe member (310).
[0146] Cooling fluid introduced into one of the main flow paths (120) of the first main busbar (101) can flow to another of the main flow paths (120) of the first main busbar (101) through the circulation pipe member (320).
[0147] Additionally, the cooling fluid flowing into the other main flow path (120) of the first main busbar (101) can be discharged into the other main flow path (120) of the second main busbar (102) through the connecting pipe member (310).
[0148] Through the above process, the cooling fluid exchanges heat with the main busbar (100), so that the main busbar (100) can be cooled.
[0149] In the busbar assembly (10) according to the embodiment described above, a cooling fluid can be introduced into the main flow path (120) through the second main through hole (132) of the second main busbar (102). The cooling fluid flows while cooling the second main busbar (102) and exits through the first main through hole (131).
[0150] Cooling fluid can be introduced into the main flow path (120) of the first main busbar (101) through the connecting pipe member (310) and the second main through hole (132) of the first main busbar (101). The cooling fluid flows to cool the first main busbar (101) and can be introduced into another main flow path (120) of the first main busbar (101) through the second main through hole (132).
[0151] The cooling fluid that flows while cooling the first main busbar (101) again flows out through the second main through hole (132) of the first main busbar (101) and can be introduced into the main flow path (120) of the second main busbar (102) through the connecting pipe member (310) and the first main through hole (131) of the second main busbar (102).
[0152] The cooling fluid flowing while cooling the second main busbar (102) can be discharged to the outside through the second main through hole (132) of the second main busbar (102).
[0153]
[0154] Referring to FIGS. 8 through 21, a busbar assembly (20) according to another embodiment of the present invention is illustrated as an example. The busbar assembly (20) according to the illustrated embodiment can be combined with an external device and electrically connected.
[0155] The busbar assembly (20) receives power from one or more devices and can transmit the received power to one or more other devices.
[0156] At this time, the busbar assembly (20) can receive heat from the device. In addition, as current is continuously passed through the busbar assembly (20), heat may also be generated within the busbar assembly (20) itself.
[0157] Accordingly, the busbar assembly (20) according to an embodiment of the present invention is configured such that a cooling fluid comes into direct contact with a heat-generating component to cool the component. At this time, the cooling fluid may flow within the component but may not be exposed to the outside.
[0158] Accordingly, the structure of the busbar assembly (20) can be simplified compared to the case where cooling fluid is provided from the outside of the busbar assembly (20). At the same time, regarding the cooling of the busbar assembly (20), the busbar assembly (20) according to the present embodiment differs from the busbar assembly (10) according to the above-described embodiment in that it is fluidly connected by a sub-busbar (200) without a separate pipe member (300).
[0159] To this end, a separate configuration is further formed in the main busbar (100) and the sub-busbar (200) to communicate with each other. Additionally, a sealing member (400) is further provided to maintain a sealed state between the main busbar (100) and the sub-busbar (200).
[0160] Accordingly, the busbar assembly (20) according to an embodiment of the present invention will be described below, focusing on the differences from the busbar assembly (10).
[0161] In the illustrated embodiment, the busbar assembly (20) includes a main busbar (100), a sub-busbar (200), and a sealing member (400).
[0162] The main busbar (100) according to the present embodiment is almost similar in structure and function to the main busbar (100) according to the above-described embodiment.
[0163] However, the main busbar (100) according to the present embodiment is coupled to the sub-busbar (200) and fluidly connected without a pipe member (300), so there are some differences in the structure of the main flow path (120) and the main through hole (130).
[0164] In the illustrated embodiment, the main busbar (100) includes a main body (110), a main flow path (120), and a main through hole (130).
[0165] The main body (110) of the main busbar (100) according to the present embodiment has the same structure and function as the main body (110) according to the above-described embodiment. In addition, the main body (110) according to the present embodiment is also arranged so that the end of its extension direction contacts the sub-body (210).
[0166] Accordingly, the description of the main body (110) will be replaced by the description of the main busbar (100) according to the above-described embodiment.
[0167] A main Euro (120) is formed inside the main body (110).
[0168] The main channel (120) is a space in which the provided cooling fluid flows within the main body (110). The main channel (120) is formed by being recessed within the main body (110). In the illustrated embodiment, the main channel (120) is formed extending in the longitudinal direction of the main body (110), and in the left-right direction in the illustrated embodiment.
[0169] Each end of the main flow path (120) in the extension direction, the left and right sides in the illustrated embodiment, are closed, respectively. Accordingly, the main flow path (120) can be communicated with the outside by main through holes (130) formed through each side in the thickness direction of the main body (110), the front and rear sides in the illustrated embodiment.
[0170] The parts of the main Euro (120) that are not in contact with the outside by the main through hole (130), the left, right, front, rear, upper, and lower sides in the illustrated embodiment are enclosed and closed by the inner circumference of the main body (110).
[0171] Therefore, the cooling fluid can be introduced into the main flow path (120) only through the main through hole (130) and can be discharged from the main flow path (120).
[0172] The cooling fluid flowing in the main channel (120) comes into direct contact with the inner circumference of the main body (110) and can receive heat. Accordingly, the main body (110) and other devices connected thereto can be cooled.
[0173] The main channel (120) may be of any shape capable of forming a path through which the cooling fluid flows. In the illustrated embodiment, the main channel (120) is formed as a cylindrical space having a circular cross-section and a length in the left-right direction. Each end of the main channel (120) in the extension direction is closed.
[0174] Multiple main channels (120) may be formed. Multiple main channels (120) may be spaced apart in the height direction of the main body (110), and in the vertical direction in the illustrated embodiment. Multiple main channels (120) may be physically separated from each other to form a channel for the cooling fluid.
[0175] In the illustrated embodiment, a total of four main channels (120) are formed and spaced apart in the vertical direction. The cooling fluid flowing in the plurality of main channels (120) provided in the first main busbar (101) can form channels in the same direction. Similarly, the cooling fluid flowing in the plurality of main channels (120) provided in the second main busbar (102) can form channels in the same direction.
[0176] At this time, the main Euro (120) that matches the outermost side along the height direction can be positioned at a predetermined distance from the end of the main body (110) in the height direction.
[0177] That is, when alternating current is passed through the busbar assembly (10), a skin effect may occur due to electromagnetic properties. In this case, the current tends to concentrate away from the center, i.e., at the upper or lower end in the illustrated embodiment.
[0178] Accordingly, it is preferable that the main Euro (120) be spaced apart from the upper or lower end of the main body (110) by a predetermined distance, for example, the thickness of the main body (110).
[0179] One side of the extension direction of the main flow path (120) may be fluidly connected to the outside to form an inlet or outlet flow path for cooling fluid to the outside. In the illustrated embodiment, the left side of the main flow path (120) of the first main busbar (101) and the right side of the main flow path (120) of the second main busbar (102) are fluidly connected to the outside.
[0180] Additionally, the other side of the extension direction of the main Euro (120) may be fluidically connected to the sub-busbar (200) to form a flow path through which cooling fluid flows into or out of the sub-busbar (200).
[0181] In the illustrated embodiment, the right side of the main flow path (120) of the second main busbar (102) and the left side of the main flow path (120) of the second main busbar (102) are fluidly connected to the sub-busbar (200), respectively.
[0182] Accordingly, based on the entire busbar assembly (20), it can be said that the main flow path (120) is fluidly connected to the outside through the outer side in the longitudinal direction and fluidly connected to the sub-busbar (200) through the inner side in the longitudinal direction.
[0183] The main through hole (130) is configured such that the main flow path (120) communicates with the outside. The main through hole (130) can be combined with the outside to form an inlet or outlet flow path for cooling fluid. Additionally, the main through hole (130) can be combined with a sub through hole (230) to form an inlet or outlet flow path for cooling fluid based on the sub busbar (200).
[0184] Additionally, the main through hole (130) can be combined with the sub through hole (230) to form an inlet or outlet path for cooling fluid based on the sub busbar (200).
[0185] The main through hole (130) may have a shape corresponding to the shape of the main flow path (120). In the illustrated embodiment, the main through hole (130) is formed as a disc-shaped space having a circular cross-section and a thickness in the front-rear direction.
[0186] Multiple main through holes (130) may be formed. Multiple main through holes (130) may be formed adjacent to each end of the main flow path (120) in the extension direction. At this time, each main through hole (130) formed adjacent to each end of the main flow path (120) may be formed open in different directions.
[0187] In the illustrated embodiment, the main through hole (130) includes a first main through hole (131) and a second main through hole (132).
[0188] The first main through hole (131) is configured such that the main flow path (120) is fluidically connected to the outside. Cooling fluid may be supplied to the busbar assembly (20) through the first main through hole (131) of either the first main busbar (101) or the second main busbar (102). Additionally, cooling fluid may be discharged to the outside through the other first main through hole (131) of the first main busbar (101) or the second main busbar (102).
[0189] The first main through hole (131) is located on one side in the thickness direction of the main body (110). In the illustrated embodiment, the first main through hole (131) is located on the front side of the main body (110). The first main through hole (131) communicates the main flow path (120) with the outside from the front side.
[0190] Multiple first main through holes (131) may be formed. Multiple first main through holes (131) may each communicate with the outside of the main flow path (120) at multiple locations. In the illustrated embodiment, a total of four first main through holes (131) are formed. The four first main through holes (131) are spaced apart in the vertical direction and each communicate with the outside of the four main flow paths (120).
[0191] At this time, it will be understood that the first main through hole (131) formed in the first main bus bar (101) is positioned adjacent to the left end of the main flow path (120), and the second main through hole (132) formed in the second main bus bar (102) is positioned adjacent to the right end of the main flow path (120).
[0192] The second main through hole (132) is configured such that the main flow path (120) is fluidically connected to the sub flow path (220). Cooling fluid entering the main flow path (120) can be discharged to the sub flow path (220) through the second main through hole (132). Cooling fluid flowing from the sub busbar (200) can be re-entered into the main flow path (120) through the second main through hole (132).
[0193] The second main through hole (132) is located on the other side in the thickness direction of the main body (110). In the illustrated embodiment, the second main through hole (132) is located on the rear side of the main body (110). The second main through hole (132) communicates the main flow path (120) with the outside from the rear side. At this time, it will be understood that the second main through hole (132) is located opposite to the first main through hole (131) with respect to the length direction and thickness direction of the main body (110).
[0194] Multiple second main through holes (132) may be formed. Multiple second main through holes (132) may each connect the main flow path (120) to the sub flow path (220) at multiple locations. In the illustrated embodiment, a total of four second main through holes (132) are formed. The four second main through holes (132) are spaced apart in the vertical direction and each connect the four main flow paths (120) to the outside.
[0195] At this time, it will be understood that the second main through hole (132) formed in the first main bus bar (101) is located adjacent to the right end of the main flow path (120), and the second main through hole (132) formed in the second main bus bar (102) is located adjacent to the left end of the main flow path (120).
[0196] At this time, the first main through hole (131) and the second main through hole (132) formed in the first main bus bar (101) and the second main bus bar (102) can be configured to perform different roles.
[0197] Specifically, the first main through hole (131) formed in the first main busbar (101) forms an inlet channel through which cooling fluid flows from the outside into the main channel (120). Additionally, the second main through hole (132) formed in the first main busbar (101) forms an outlet channel through which cooling fluid flowing into the main channel (120) flows out to the sub channel (220).
[0198] The first main through hole (131) formed in the second main busbar (102) forms an inlet channel through which cooling fluid flowing from the sub-channel (220) flows into the main channel (120). Additionally, the second main through hole (132) formed in the second main busbar (102) forms an outlet channel through which cooling fluid flowing from the main channel (120) flows out to the outside.
[0199] Of course, it will be understood that when the cooling fluid flows in through the second main busbar (102), the flow path of the cooling fluid is reversed, and accordingly, the functions of the first main through hole (131) and the second main through hole (132) are also performed in reverse.
[0200] The first main through hole (131) and the second main through hole (132) are arranged to overlap with the sub through hole (230) along the thickness direction of the main body (110), in the front-rear direction in the illustrated embodiment.
[0201] A sub-busbar (200) combines multiple main busbars (100) together. Each sub-busbar (200) can be electrically connected to a plurality of main busbars (100).
[0202] In the illustrated embodiment, the sub-busbar (200) is positioned between the first main busbar (101) and the second main busbar (102) and is arranged to overlap at least partially in the thickness direction of the main body (110).
[0203] That is, the sub-busbar (200) is electrically connected to the right end of the first main busbar (101) and the left end of the second main busbar (102), respectively.
[0204] Additionally, the sub-busbar (200) according to the present embodiment is fluidly connected to the main busbar (100). Which of the first main busbar (101) and the second main busbar (102)
[0205] The cooling fluid introduced into one can flow to the other through the sub-busbar (200). Therefore, in this embodiment, the sub-busbar (200) can be said to perform the role of fluidly connecting the first main busbar (101) and the second main busbar (102).
[0206] To this end, compared with the sub-busbar (200) according to the above-described embodiment, the sub-busbar (200) according to the present embodiment further includes a sub-body (210), as well as a sub-flow channel (220) and a sub-through hole (230).
[0207] The sub-body (210) forms the outer shape of the sub-busbar (200). The sub-body (210) is the part where the sub-busbar (200) is combined with the main body (110) and electrically connected.
[0208] The sub-body (210) may be of any shape that can be combined with the main body (110) and electrically connected. In the illustrated embodiment, the sub-body (210) is formed as a polygonal plate having a length in the left-right direction, a height in the up-down direction, and a thickness in the front-back direction.
[0209] The subbody (210) may be formed from a material having high electrical and thermal conductivity. In one embodiment, the subbody (210) may be formed from copper, aluminum, or an alloy material containing the same.
[0210] A sub-euro (220) is formed inside the sub-body (210).
[0211] The sub-flow channel (220) is a space in which cooling fluid discharged from either the first main busbar (101) or the second main busbar (102) flows within the sub-body (210). The sub-flow channel (220) is formed by being recessed within the sub-body (210). In the illustrated embodiment, the sub-flow channel (220) is formed extending in the longitudinal direction of the sub-body (210), and in the left-right direction in the illustrated embodiment.
[0212] Each end of the extension direction of the sub-flow channel (220), the left and right sides in the illustrated embodiment, are closed, respectively. Accordingly, the sub-flow channel (220) can be connected to the main flow channel (120) by a sub-through hole (230) formed through one side in the thickness direction of the sub-body (210), the front side in the illustrated embodiment.
[0213] In the illustrated embodiment, the parts of the sub-euro (220) that are not in contact with the outside by the sub-through hole (230), such as the left, right, front, rear, upper, and lower sides, are enclosed and closed by the inner circumference of the sub-body (210).
[0214] Therefore, the cooling fluid can be introduced into the sub-flow channel (220) and exit from the sub-flow channel (220) only through the sub-through hole (230).
[0215] The cooling fluid flowing in the sub-euro (220) comes into direct contact with the inner circumference of the sub-body (210) and can receive heat. Accordingly, the sub-body (210) and the main body (110) combined therewith can be cooled.
[0216] The sub-flow channel (220) can be of any shape that can form a path for the cooling fluid to flow through.
[0217] In the illustrated embodiment, the sub-flow channel (220) is formed as a cylindrical space having a circular cross-section and a length in the left-right direction. Each end of the sub-flow channel (220) in the extension direction is closed.
[0218] Multiple sub-flow channels (220) may be formed. Multiple sub-flow channels (220) may be spaced apart in the height direction of the sub-body (210), and in the vertical direction in the illustrated embodiment. Multiple sub-flow channels (220) may be physically separated from one another to form a flow channel for the cooling fluid.
[0219] In the illustrated embodiment, a total of four sub-flow channels (220) are formed and spaced apart in the vertical direction.
[0220] At this time, each sub-flow channel (220) can be fluidly connected to the main flow channels (120) formed in the first main busbar (101) and the second main busbar (102), respectively.
[0221] Accordingly, multiple sub-flow channels (220) can each form an independent flow channel for cooling fluid together with multiple main flow channels (120).
[0222] The sub-through hole (230) communicates with the outside of the sub-flow channel (220). The sub-through hole (230) is positioned to overlap with the main through hole (130) so as to communicate with the main flow channel (120) and the sub-flow channel (220). Cooling fluid flowing from the main flow channel (120) can flow out to the sub-flow channel (220) by passing through the main through hole (130) and the sub-through hole (230) in sequence. Cooling fluid flowing from the sub-flow channel (220) can flow out to the main flow channel (120) by passing through the sub-through hole (230) and the main through hole (130) in sequence.
[0223] A sub-through hole (230) is formed on one side in the thickness direction of the sub-body (210), on the front side in the illustrated embodiment. The sub-through hole (230) communicates the sub-flow channel (220) with the outside on the said side, i.e., the front side.
[0224] The sub-through hole (230) may have a shape corresponding to the shape of the main through hole (130) or the sub-flow channel (220). In the illustrated embodiment, the sub-through hole (230) is formed as a disc-shaped space having a circular cross-section and a thickness in the front-rear direction.
[0225] Multiple sub-through holes (230) may be formed. Multiple sub-through holes (230) may each communicate with the outside of multiple sub-flow channels (220). In the illustrated embodiment, a total of eight sub-through holes (230) are formed. Each pair of sub-through holes (230) is positioned adjacent to each end of the sub-flow channel (220) in the longitudinal direction.
[0226] At this time, the sub-through hole (230) located on one side in the longitudinal direction of the sub-flow channel (220), on the left side in the illustrated embodiment, may be defined as the first sub-through hole (231). Additionally, the sub-through hole (230) located on the other side in the longitudinal direction of the sub-flow channel (220), on the right side in the illustrated embodiment, may be defined as the second sub-through hole (232).
[0227] The first sub-through hole (231) forms either a passage for cooling fluid flowing from the main flow path (120) of the first main busbar (101) to flow out to the sub-flow path (220) or a passage for cooling fluid flowing from the sub-flow path (220) to flow out to the main flow path (120) of the second main busbar (102).
[0228] The first sub-through hole (231) is positioned to overlap with the second main through hole (132). Accordingly, the main flow path (120) and the sub-flow path (220) of the first main busbar (101) can be fluidly connected to each other.
[0229] The second sub-through hole (232) forms a passage for the cooling fluid flowing from the main flow path (120) of the first main busbar (101) to flow out to the sub-flow path (220) and another passage for the cooling fluid flowing from the sub-flow path (220) to flow out to the main flow path (120) of the second main busbar (102).
[0230] The second sub-through hole (232) is positioned to overlap with the second main through hole (132). Accordingly, the sub-flow channel (220) and the main flow channel (120) of the second main busbar (102) can be fluidly connected to each other.
[0231] At this time, if the space between the main through hole (130) and the sub through hole (230) is not sealed, there is a risk that the cooling fluid may leak out unintentionally. Accordingly, the busbar assembly (20) according to the present embodiment further includes a sealing member (400).
[0232] The sealing member (400) is positioned between the main body (110) and the sub body (210) to seal the outside of the main through hole (130) and the sub through hole (230). The sealing member (400) is arranged to surround the main through hole (130) and the sub through hole (230) radially from the outside.
[0233] A plurality of sealing members (400) may be provided. A plurality of sealing members (400) may each seal the outer side of a plurality of main through holes (130) and sub through holes (230). In the illustrated embodiment, a total of four pairs of sealing members (400) are provided and arranged to surround four pairs of first sub through holes (231) and four pairs of second sub through holes (232).
[0234] The sealing member (400) may be provided in any shape capable of sealing the main through hole (130) and the sub through hole (230) to block communication with the outside. In the illustrated embodiment, the sealing member (400) is provided in the form of an O-ring.
[0235] In the above embodiment, the sealing member (400) may be formed of a material having a predetermined elasticity. In one embodiment, the sealing member (400) may be formed of a rubber or silicone material.
[0236] In the busbar assembly (20) according to the embodiment described above, a cooling fluid may be introduced into the main flow path (120) through the first main through hole (131). The cooling fluid flows along the main flow path (120) and, after cooling either the first main busbar (101) or the second main busbar (102), may be discharged into the sub flow path (220) through either the second main through hole (132), the first sub through hole (231), or the second sub through hole (232).
[0237] The cooling fluid introduced into the sub-flow channel (220) can be discharged into the main flow channel (120) through the other of the first sub-through hole (231) and the second sub-through hole (232) and the second main through hole (132). The cooling fluid flowing along the main flow channel (120) and cooling the other of the first main busbar (101) or the second main busbar (102) can be discharged to the outside through the first main through hole (131).
[0238]
[0239] Referring to FIGS. 22 and 23, 30 according to another embodiment of the present invention is illustrated as an example. The busbar assembly (30) according to the illustrated embodiment can be combined with an external device and electrically connected.
[0240] The busbar assembly (30) receives power from one or more devices and can transmit the received power to one or more other devices.
[0241] At this time, the busbar assembly (30) can receive heat from the device. In addition, as current is continuously passed through the busbar assembly (30), heat may also be generated within the busbar assembly (30) itself.
[0242] Accordingly, the busbar assembly (30) according to an embodiment of the present invention is configured such that a cooling fluid comes into direct contact with a heat-generating component to cool the component. At this time, the cooling fluid may flow within the component but may not be exposed to the outside.
[0243] Accordingly, the structure of the busbar assembly (30) can be simplified compared to the case where a cooling fluid is provided from the outside of the busbar assembly (30). At the same time, the cooling of the busbar assembly (30) is different in that the busbar assembly (30) according to the present embodiment differs from the busbar assembly (10) according to the above-described embodiment in that the main busbar (100) is directly fluidly connected to each other without a sub-busbar (200) or a pipe member (300).
[0244] In addition, the busbar assembly (30) according to the present embodiment may be arranged so that the main busbar (100) extends in different directions. Accordingly, design freedom and placement convenience may be improved.
[0245] Accordingly, the busbar assembly (30) according to an embodiment of the present invention will be described below, focusing on the differences from the busbar assembly (10, 20).
[0246] In the illustrated embodiment, the busbar assembly (30) includes a main busbar (100). Additionally, although not illustrated, a sealing member (400) may be further provided between a pair of main busbars (100).
[0247] The main busbar (100) provided in the busbar assembly (30) according to the present embodiment has the same basic structure as the main busbar (100) provided in the busbar assembly (20) according to the above-described embodiment. However, in the case of the present embodiment, there is a difference in that a plurality of main through holes (130) are arranged at an angle with respect to the longitudinal direction of the main body (110).
[0248] That is, as shown in FIG. 22, the main through hole (130) formed in the main bus bar (100) is located at the left end of the first main bus bar (101) and is spaced apart at an angle from the upper left side toward the lower right side.
[0249] Referring to FIG. 23, the first main bus bar (101) can be directly connected to and communicated with the second main bus bar (102). In the above embodiment, a plurality of main through holes (130) formed in the first main bus bar (101) and a plurality of main through holes (130) formed in the second main bus bar (102) can be arranged to overlap in the thickness direction of the main body (110), that is, in the front-rear direction.
[0250] In the above embodiment, in addition to the main through hole (130) through which the first main bus bar (101) and the second main bus bar (102) communicate with each other, other through holes may be formed to allow the main flow path (120) to communicate with the outside. In the above embodiment, the through hole may be formed on either the surface of the main body (110) where the main through hole (130) is formed or where it is not formed.
[0251] In the above embodiment, the cooling fluid may flow into either the first main busbar (101) or the second main busbar (102) through the through hole. The flowing cooling fluid may then flow out to the other of the first main busbar (101) and the second main busbar (102) through the main through hole (130) which is arranged to overlap each other, and then be discharged to the outside through the through hole formed in the other one.
[0252]
[0253] Referring to FIGS. 24 and 25, a temperature distribution occurring in a busbar assembly (10, 20, 30) according to various embodiments of the present invention is illustrated as an example.
[0254] Referring to FIG. 24, an example is shown in which the main busbar (100) and the sub-busbar (200) are cooled by the cooling fluid introduced into the main flow path (120). As can be seen from the illustrated embodiment, it can be confirmed that the temperature of the main body (110) decreases as it moves inward along the height direction of the main body (110).
[0255] At this time, each end in the height direction of the main body (110), the upper and lower ends in the illustrated embodiment, are formed to have a higher temperature than other parts. This is due to the main flow path (120) being spaced apart from the ends by a predetermined distance to suppress the epidermal effect as described above.
[0256] However, even in this case, the upper and lower ends of the main body (110) may also be expected to be air-cooled by the outside air. Therefore, it will be understood that the main busbar (100) and the sub-busbar (200) can be effectively cooled in this case as well.
[0257] Referring to FIG. 25, a temperature distribution (a) formed in a busbar assembly according to the prior art and a temperature distribution (b) formed in a busbar assembly (10, 20, 30) according to an embodiment of the present invention are illustrated as examples.
[0258] The above experimental results were obtained by performing the experiment under conditions where a current of 2,500 A is applied to the busbar assembly (10, 20, 30), the ambient temperature is 20 degrees Celsius, and the flow rate of the provided cooling fluid is 0.01 kg / s.
[0259] Referring to FIG. 25 (a), in the case of a busbar assembly according to the prior art, it can be cooled only by air cooling. In this case, it can be seen that the temperature of the highest temperature part located at the bottom reaches 96 degrees Celsius.
[0260] Referring to FIG. 25(b), the busbar assembly (10, 20, 30) according to an embodiment of the present invention is additionally cooled by a cooling fluid in addition to air cooling. In this case, it can be confirmed that the temperature of the highest temperature part located at the bottom is around 30 degrees Celsius.
[0261] Therefore, it can be confirmed that even when a large amount of cooling fluid is not supplied, the cooling effect can be improved compared to the case where only air cooling is performed.
[0262]
[0263] Although embodiments of the present invention have been described, the spirit of the present invention is not limited to the embodiments presented in this specification. Those skilled in the art who understand the spirit of the present invention may easily propose other embodiments within the scope of the same spirit by adding, changing, deleting, or adding components, and such embodiments shall also be considered to fall within the scope of the spirit of the present invention.
[0264] 10: Busbar assembly 20: Busbar assembly
[0265] 30: Busbar assembly 100: Main busbar
[0266] 101: 1st Main Busbar 102: 2nd Main Busbar
[0267] 110: Main Body 120: Main Euro
[0268] 130: Main penetration hole 131: 1st main penetration hole
[0269] 132: 2nd Main Penetrating Hole 200: Sub Busbar
[0270] 210: Sub Body 220: Sub Euro
[0271] 230: Sub-penetration hole 231: First sub-penetration hole
[0272] 232: Second sub-penetration hole 300: Pipe member
[0273] 310: Connecting pipe member 320: Circulating pipe member
[0274] 400: Sealing member
Claims
1. Includes a plurality of main busbars electrically connected to the outside, and The above main busbar is, A main body extending in the first direction; A main flow path formed inside the main body and fluidically connected to the outside, through which a cooling fluid that cools the main body flows; and A main through hole formed through the main body and communicating with the main fluid path and the outside, Busbar assembly.
2. In Paragraph 1, A pipe member comprising a plurality of main busbars each coupled to the plurality of main busbars and communicating with each of the main flow paths of the plurality of main busbars, Busbar assembly.
3. In Paragraph 2, The above main flow path extends in the first direction, and each end of the extension direction is formed open to define the main through hole, and A plurality of the above main busbars are spaced apart along the first direction, such that one of the main busbars is located on one side of the first direction and the other of the main busbars is located on the other side of the first direction. The above pipe member is, A connecting pipe member comprising a plurality of main busbars, each formed at one end facing each other and connected to a plurality of main through holes, respectively. Busbar assembly.
4. In Paragraph 3, The above main flow paths are provided in plurality, and the plurality of main flow paths are spaced apart along a second direction orthogonal to the first direction, and The above pipe member is, A circulation pipe member comprising a pair of adjacently located along the second direction and each coupled to the other end of the main flow path, Busbar assembly.
5. In Paragraph 4, The above cooling fluid is, Inflow into one of the main flow paths through the connecting pipe member and outflow into another main flow path through the circulation pipe member, Busbar assembly.
6. In Paragraph 1, A plurality of main busbars, each coupled to and electrically connected to a sub-busbar, Busbar assembly.
7. In Paragraph 6, The above sub-busbar is, A sub-body each coupled to each end of a plurality of the above-mentioned main busbars facing each other; and A sub-flow path formed inside the above-mentioned sub-body and fluidically connected to the above-mentioned main flow path to form a part of the cooling fluid flow path, comprising Busbar assembly.
8. In Paragraph 7, The above sub-busbar is, It includes a sub-through hole formed through one surface of the sub-body facing the main busbar, communicating with the sub-flow path and the outside, The above sub-through hole is, Positioned along a third direction orthogonal to the first direction, so as to overlap at least partially with the end of the first direction of the main flow path, Busbar assembly.
9. In Paragraph 8, The above sub-euro extends along the above first direction, and The above sub-through holes are provided in plurality, and the plurality of said sub-through holes are located adjacent to each end of the said sub-flow channel. Busbar assembly.
10. In Paragraph 9, The above main through hole is, A penetrating surface formed on one side of the main body facing the sub-busbar, communicating with the main fluid path and the outside, Busbar assembly.
11. In Paragraph 9, The sub-through hole located on one side of the first direction is arranged to overlap with the main through hole formed in any one of the plurality of main bus bars, and The sub-through hole located on the other side of the first direction is arranged to overlap with the main through hole formed in another of the plurality of main busbars. Busbar assembly.
12. In Paragraph 8, A sealing member positioned between the main body and the sub body, and configured to seal the main through hole and the sub through hole by surrounding them radially outwardly. Busbar assembly.
13. In Paragraph 1, The above main through hole is, Located on one side of the first direction and formed through one surface in the thickness direction of the main body, Busbar assembly.
14. In Paragraph 13, The above main through holes are formed in plurality, and the plurality of main through holes are spaced apart in a direction inclined with respect to the height direction of the main body and the first direction, respectively. Busbar assembly.