submodule

Abstract

Disclosed is a sub module. The sub module of the present embodiment is slidably coupled to a track assembly. The cart unit and the track unit on which the sub module is mounted are coupled in a manner of engaging with each other by a surface having a curvature, and are respectively provided with a separation preventing portion, thereby preventing any separation during the sliding of the cart unit along the track unit. Accordingly, the sub module mounted on the cart unit slides along the track unit together with the cart unit, and is not separated in the left and right directions of the track unit. Thus, the coupling state between the sub module and the track unit can be stably maintained.

Description

Technical Field

[0001] This invention relates to submodules, and more specifically, to a submodule having a structure capable of stably maintaining the engagement of a trolley and a track assembly for housing a capacitor assembly or valve assembly. Background Technology

[0002] Flexible AC Transmission Systems (FACTS) are a type of operational technology that improves the flexibility of an AC power system by introducing power electronic control technology into the AC power system.

[0003] Specifically, flexible power transmission systems can control transmitted power by using semiconductor switching elements for electricity. Such flexible transmission systems can maximize the utilization of transmission line equipment, increase transmission capacity, and minimize voltage fluctuations.

[0004] In flexible power transmission systems, power storage and input / output are achieved using capacitor elements. These capacitor elements can be controlled by switching elements. Specifically, the switching elements can control the input and output of current to the capacitor elements.

[0005] In flexible power transmission systems, transmission and storage capacity can be varied by diversifying the number of capacitor elements and the switching elements that control them. Therefore, the structures used to control the capacitor elements and switching elements can be modular.

[0006] When the structure is modular, the individual structures can be electrically connected to each other by being inserted into or extended from the large frame. This allows for changes in the overall transmission and storage capacity of the flexible power transmission system.

[0007] Such structures are typically heavy. This is because they contain capacitor elements, switching elements, and various structural components for controlling them.

[0008] Therefore, the method of inserting the structure into or extending it from a large frame is preferably performed in a sliding manner. Furthermore, the sliding method, due to its structural requirements, includes tracks for supporting the structure.

[0009] The structure is designed to be integrated with a track and move only along the length of the track. However, due to wear and tear caused by repeated insertion and withdrawal operations, there is a risk that the structure may detach from the track.

[0010] Furthermore, when the structure is supported by a sliding mechanism, it is necessary to restrict the movement in the sliding direction. That is, if the distance the structure moves while sliding is not restricted, there is a risk that it may move arbitrarily along the track and detach.

[0011] Under such circumstances, it is difficult to ensure the operational reliability of the flexible power transmission system. Furthermore, separating the structure from the track for maintenance or other purposes may threaten the safety of the work site.

[0012] Korean Patent Publication No. 10-2011-0064226 discloses an anti-track-detachment device. Specifically, it discloses an anti-track-detachment device that prevents the wheels from detaching along the width direction of the track by providing an additional anti-track-detachment device on the outside of the wheels of a trolley mounted on a track.

[0013] However, this type of anti-track-detachment device has the limitation of failing to propose a solution to prevent the trolley from detaching from the track in the vertical direction, i.e., from the upper side.

[0014] Furthermore, the aforementioned existing documents require additional equipment to achieve this. Therefore, the overall volume of the track and frame will inevitably increase.

[0015] Korean Utility Model Approval No. 20-0406915 discloses an anti-detachment device for a sliding track. Specifically, it discloses an anti-detachment device for preventing track detachment caused by impacts resulting from the sliding of the track when opening and closing a storage box.

[0016] However, this type of anti-detachment device is based on supporting lightweight objects, and therefore has limitations in its applicability to tracks set up in flexible power transmission systems.

[0017] Furthermore, the existing literature assumes that the sliding rails are located on the sides of the frame. Therefore, it is difficult to ensure the reliability that the structure, which is heavy, can be stably supported on the sides in the same manner as the existing literature.

[0018] Korean Utility Model Publication No. 20-1998-0049317 discloses an anti-detachment device for a sliding door. Specifically, it discloses an anti-detachment device in which a stop bracket is fastened to the lower part of a support bracket for supporting a lower roller, and an auxiliary stop member is provided on the vertical part of the stop bracket.

[0019] However, this type of anti-detachment device is based on the premise that the rollers are fixed to the track of the sliding door. That is, it is difficult to apply to situations where the track and the sliding door are secured without additional components.

[0020] Furthermore, the existing literature relates to a structure for supporting a relatively lightweight sliding door. That is, there are limitations in the approach that only suggests solutions for detaching lightweight structural elements, which can be supported by the lower rollers, from the track. Summary of the Invention

[0021] The problem that the invention aims to solve

[0022] The purpose of this invention is to provide a submodule with a structure capable of solving the above-mentioned problems.

[0023] Firstly, an object of the present invention is to provide a sub-module having a structure that allows for easy integration of heavy modules with tracks.

[0024] In addition, an object of the present invention is to provide a sub-module having a structure that allows a heavy module to slide easily when engaged with a track.

[0025] In addition, an objective of the present invention is to provide a sub-module having a structure that does not arbitrarily detach from the inside of the track in the width direction when a heavy module is combined with the track.

[0026] In addition, an objective of the present invention is to provide a sub-module having a structure that does not arbitrarily detach outward in the width direction of the track when a heavy module is combined with the track.

[0027] In addition, an objective of the present invention is to provide a sub-module having a structure that does not arbitrarily detach from the upper side of the track when a heavy module is combined with the track.

[0028] In addition, an object of the present invention is to provide a sub-module having a structure in which the track supporting a heavy module is not damaged by the weight of the module.

[0029] In addition, an object of the present invention is to provide a sub-module having a structure that allows a heavy module to be easily coupled to a track and stably maintained in the coupled state without the addition of additional components.

[0030] In addition, an object of the present invention is to provide a sub-module having a structure capable of limiting the distance that a heavy module coupled with a track can slide along the track.

[0031] In addition, an object of the present invention is to provide a sub-module having a structure that does not require excessive changes to the structure to limit the distance of a heavy module along the track.

[0032] In addition, an object of the present invention is to provide a sub-module having a structure that allows a heavy module to slide smoothly to a specific position in the longitudinal direction of the track.

[0033] In addition, an object of the present invention is to provide a sub-module having a structure that prevents further movement toward the end of the track in the length direction when a heavy module reaches the specific position.

[0034] In addition, an object of the present invention is to provide a sub-module having a structure that allows a heavy module to slide smoothly from the specific position in a direction away from the end.

[0035] In addition, an object of the present invention is to provide a sub-module having a structure in which a user can easily move the heavy module further toward the end direction when the heavy module reaches the specific position.

[0036] In addition, an objective of the present invention is to provide a sub-module having a structure that integrates a heavy module with a track so that it cannot slide arbitrarily.

[0037] Technical solutions to the problem

[0038] To achieve the above objectives, the submodule of this embodiment includes: a capacitor assembly housing a capacitor element; a valve assembly electrically connected to the capacitor assembly; a cart unit for housing the capacitor assembly or the valve assembly; and a track unit slidably connected to the track unit, the track unit extending in one direction, the cart unit including: an extension extending toward the track unit; and a wheel rotatably connected to one side of the extension and rotatably contacting the track unit, the track unit including a track bend extending toward the cart unit and facing the other side of the extension.

[0039] Additionally, the trolley unit of the submodule may include an arc-shaped portion that protrudes in an arcuate manner from the other side of the extension toward the curved section of the track, the curved section of the track being curved in a manner that surrounds the arc-shaped portion.

[0040] In addition, the curved portion of the track in the submodule can be formed in an arc-shaped manner in a direction away from the arc-shaped portion.

[0041] Additionally, the trolley unit of the submodule may include: a trolley body portion, on which the capacitor assembly or the valve assembly is disposed, an extension portion extending from the side of the trolley body portion opposite to the side on which the capacitor assembly or the valve assembly is disposed, and a track bend portion extending such that the end of the track bend portion facing the trolley unit is located between the arc-shaped portion and the trolley body portion.

[0042] Additionally, the track unit of the submodule may include: a track body located on the side of the trolley unit opposite to the capacitor assembly or the valve assembly; a track bend extending from the track body; the track bend comprising: a first track bend extending in an arcuate manner from the track body in a direction away from the arcuate portion; a second track bend extending in an arcuate manner from the first track bend in a direction away from the arcuate portion; and a third track bend extending in an arcuate manner from the second track bend in a direction away from the arcuate portion.

[0043] Additionally, a side limiting portion may be formed on the side of the second track curvature portion of the submodule facing the arc-shaped portion in an arcuate manner, so as to form a predetermined angle with the surface of the arc-shaped portion.

[0044] In addition, the side of the side limiting portion of the submodule facing the arcuate portion can be formed recessed in a direction away from the arcuate portion, and the arcuate portion is formed protruding toward the side limiting portion.

[0045] Additionally, an upper surface limiting portion protruding toward the arc-shaped portion may be provided on the side of the third track curvature portion of the submodule facing the arc-shaped portion.

[0046] In addition, the side of the upper surface limiting portion of the submodule facing the arcuate portion can be formed recessed in a direction away from the arcuate portion, and the arcuate portion is formed protruding towards the upper surface limiting portion.

[0047] Additionally, the track unit of the submodule may include: a track body portion, from which the track bend portion extends; a track extension portion, extending from the track bend portion toward the wheel portion; and a support portion, continuously formed with the track extension portion and located in a direction away from the track extension portion, wherein the wheel portion is rotatably mounted on the support portion.

[0048] Additionally, a step portion may be formed between the track extension portion and the support portion of the submodule. The step portion is formed continuously with the track extension portion and the support portion, and the side of the step portion facing the wheel portion is recessed.

[0049] In addition, the shortest distance between the capacitor assembly or valve assembly of the submodule and one side of the step portion can be longer than the shortest distance between the capacitor assembly or valve assembly and one side of the support portion facing the wheel portion.

[0050] In addition, the shortest distance between the capacitor assembly or valve assembly of the submodule and one side of the step portion can be longer than the shortest distance between the capacitor assembly or valve assembly and one side of the track extension facing the capacitor assembly or valve assembly.

[0051] In addition, the shortest distance between the capacitor assembly or valve assembly of the submodule and the side of the support facing the wheel portion can be longer than the shortest distance between the capacitor assembly or valve assembly and the side of the track extension facing the capacitor assembly or valve assembly.

[0052] Additionally, the wheel portion of the submodule may include: a wheel body portion rotatably mounted on the support portion; and a disc portion located on the side of the wheel body portion facing the extension portion, having a diameter larger than that of the wheel body portion, the wheel body portion being rotatably mounted on the support portion, and the disc portion being accommodated in a space surrounded by the track extension portion, the step portion, and the support portion.

[0053] Additionally, the disk portion of the submodule may be formed to have a predetermined thickness in the direction toward the track extension portion and the support portion, and the step portion is formed to extend between the track extension portion and the support portion for a length longer than the thickness of the disk portion.

[0054] In addition, the outer periphery of the disk portion of the submodule can be separated from the side of the stepped portion by a predetermined distance.

[0055] Additionally, a trolley coupling portion may be provided on the side of the disk portion of the submodule facing the extension portion, and the trolley coupling portion may be rotatably coupled to the extension portion.

[0056] Additionally, another embodiment of the present invention includes a submodule comprising: a trolley unit, a valve assembly; a track unit, the trolley unit being slidably coupled to the track unit, the track unit extending in one direction; and an anti-detachment portion disposed on the trolley unit and the track unit, configured to prevent the trolley unit from arbitrarily detaching from the track unit, the anti-detachment portion comprising: a stopper member rotatably coupled to the trolley unit, extending in one direction; and a stop groove recessed on one side of the track unit, one side of the stopper member being inserted into or detached from the stop groove.

[0057] Additionally, the trolley unit of the submodule may include: a trolley body extending in the direction formed along the track unit; and an extension extending from the trolley body toward the track unit, wherein the stop member is attached to one side of the extension.

[0058] Additionally, the stop member of the anti-detachment part of the submodule may include: a stop member body portion extending in the direction formed by the extension of the stop member; and a locking plate bent at a predetermined angle from one side of the extension direction of the stop member body portion toward the extension portion, wherein if the stop member is inserted into the stop groove, the locking plate contacts any side surrounding the stop groove.

[0059] Additionally, the anti-detachment part of the submodule may include: an elastic member configured to be coupled to the stop member and the trolley unit respectively to elastically support the stop member. The stop member includes: an elastic member coupling hole formed through the side opposite to the side where the locking plate is located, and one side of the elastic member is coupled to the elastic member coupling hole.

[0060] Additionally, the stop member of the submodule may include: a wheel engagement portion located between the locking plate and the elastic member engagement hole, rotatably engaged with the extension portion, wherein the elastic member is configured to apply an elastic force in the direction that causes the side of the stop member having the elastic member engagement hole to move toward the trolley body portion.

[0061] Additionally, the track unit of the submodule may include: a support portion, a wheel portion rotatably coupled to the extension portion, and a locking plate contacting one side of the support portion facing the trolley body portion.

[0062] Additionally, the trolley unit of the submodule may include: an extension extending toward the track unit; and a wheel rotatably coupled to the extension, the track unit including a support for mounting the wheel, and a stop groove formed in the support.

[0063] Additionally, the stop groove of the submodule may include: a first surface, disposed adjacent to one end of the track unit extending in the direction, forming a predetermined angle with the side surface of the track unit and extending therefrom; and a second surface, continuously formed with the first surface, extending in a direction away from the one end of the track unit and extending from the first surface toward the side surface of the track unit, wherein the first surface is formed at a more inclined angle than the second surface toward the side surface of the track unit.

[0064] In addition, the trolley unit of the submodule can move toward the stop slot until the stop member contacts the first surface.

[0065] Additionally, the stop groove of the submodule can be configured adjacent to one side end of the track unit extending in the aforementioned direction. The stop member, together with the trolley unit, moves along the track unit toward the side end of the track unit or away from the side end of the track unit. If the stop member is inserted into the stop groove, the side of the stop member contacts the first surface surrounding the stop groove at a position adjacent to the side end of the track unit.

[0066] Additionally, a blocking plate may be provided at the end of the track unit of the submodule adjacent to the stop groove. The blocking plate is configured to be attached to the end of the track unit and the end of the trolley unit respectively to restrict the movement of the trolley unit.

[0067] Additionally, the trolley unit of the submodule may include: a trolley body portion for housing the valve assembly; an extension portion formed by extending a predetermined distance from the trolley body portion; and an arc-shaped portion formed by protruding from the extension portion in an arcuate manner in the opposite direction to the anti-detachment portion, wherein a trolley hollow portion is provided inside the arc-shaped portion, the trolley hollow portion being formed through the direction in which the track unit extends, for fastening the blocking plate to the blocking fastening member of the trolley unit to the trolley hollow portion.

[0068] Additionally, the track unit of the submodule may include: a track body extending along the direction formed by the track unit on the lower side of the trolley unit; and a track extension extending from the track body toward the stop member, wherein a fastening hole is provided inside the track extension, the fastening hole being formed through the direction formed by the track unit, for fastening the blocking plate to the blocking fastening member of the track unit to the fastening hole.

[0069] Invention Effects

[0070] According to the present invention, the following effects can be achieved.

[0071] First, the trolley unit is attached to the track unit along its length. Heavy capacitor or valve assemblies are then housed within the trolley unit.

[0072] Therefore, heavy capacitor or valve assemblies can be easily integrated into the track unit via the trolley unit.

[0073] In addition, the trolley unit is slidably coupled to the track unit. The trolley unit has an extension that extends toward the track unit and an arc-shaped portion that protrudes from the extension.

[0074] The track unit has a curved section that extends toward the trolley unit and surrounds the arc-shaped portion. The trolley unit is guided by the curved section, allowing it to slide along the length of the track unit.

[0075] Therefore, even with heavy capacitor or valve assemblies mounted on the track unit, the trolley unit can slide along the track unit. This allows the capacitor or valve assemblies to slide easily along the track unit.

[0076] Furthermore, the curved section of the track is formed protruding from the inside of the track unit, i.e., in a direction away from the arc-shaped section. The curved section is formed to surround the arc-shaped section. A side restraint is formed protruding from the side of the curved section facing the arc-shaped section. If the trolley unit moves a predetermined distance in the left-right direction toward the curved section of the track, the side restraint comes into contact with the arc-shaped section.

[0077] Therefore, the distance the trolley unit can move inward in the left-right direction towards the track unit can be limited. As a result, the trolley unit will not arbitrarily detach itself in the width direction towards the track unit.

[0078] Furthermore, the track unit includes a track extension, a step section, and a support section that extend sequentially outward from the track body in the width direction. The step section is formed to have a height lower than the track extension and the support section. Therefore, a guide space section is formed, which is a space surrounded by the track extension, the step section, and the support section.

[0079] The wheels of the trolley unit are supported by a support portion. A disc portion with a diameter larger than that of the wheels is formed inside the wheels. The disc portion is housed within the guide space. The guide space is surrounded in the width direction by a track extension and a support portion.

[0080] Therefore, the distance the trolley unit can move outward in the left or right direction from the track unit can be limited. This prevents the trolley unit from arbitrarily detaching from the track unit in the width direction.

[0081] Furthermore, the curved section of the track is formed protruding inward from the arc-shaped section, towards the inside of the track unit. The curved section is formed in a manner that surrounds the arc-shaped section, and one end of the curved section covers the upper side of the arc-shaped section.

[0082] An upper surface limiting portion is formed protruding from the side of the curved section of the track towards the arc-shaped section. The upper surface limiting portion is located at the end of said side of the curved section. That is, the upper surface limiting portion is formed by protruding from the upper side of the arc-shaped section towards the arc-shaped section.

[0083] If the trolley unit moves a specified distance upward away from the track unit, the upper surface restriction part comes into contact with the arc-shaped part.

[0084] Therefore, the distance the trolley unit can move upwards from the track unit can be limited. This prevents the trolley unit from arbitrarily detaching from the track unit.

[0085] Furthermore, the trolley unit is slidably mounted on the track unit via wheels. The wheel body, with a wide surface area, is rotatably mounted on the support portion of the track unit. That is, the load of the trolley unit and the capacitor assembly or valve assembly mounted thereon is supported by the wheel body and the support portion, which have a wide surface area.

[0086] Therefore, even if heavy capacitor or valve assemblies are installed, the track unit will not be damaged by the weight of these assemblies.

[0087] Furthermore, the aforementioned effect can be achieved by a track unit and a trolley unit slidably integrated into the track unit. That is, no additional components are required to achieve the effect.

[0088] Therefore, the effect can be achieved simply by changing the structure of each structural element of the submodule.

[0089] Additionally, a valve assembly or capacitor assembly is mounted on the trolley unit. The trolley unit is slidably coupled to the track unit. Anti-detachment features are provided on both the trolley unit and the track unit. If the anti-detachment features on the trolley unit and the track unit come into contact at a specific position, the trolley unit will not move towards the end of the track unit.

[0090] Therefore, the distance that a trolley unit equipped with a valve assembly or capacitor assembly can slide along the track unit can be limited.

[0091] Furthermore, the anti-detachment part provided in the trolley unit includes a stop member and an elastic member. The stop member and the elastic member are respectively attached to the trolley unit. In addition, the anti-detachment part provided in the track unit is composed of a stop groove formed by a recess from the upper side of the support.

[0092] Therefore, the anti-detachment part provided in the trolley unit can be provided simply by combining a stop member and an elastic member into the trolley unit. Furthermore, the anti-detachment part provided in the track unit can be provided simply by forming a stop groove in the support portion. Therefore, minimal structural changes are required to limit the sliding distance of the trolley unit.

[0093] Additionally, the stop groove includes a first surface and a second surface. The first surface is closer to the end of the track unit along its length than the second surface. The inclination formed by the first surface and the upper surface of the track unit is greater than the inclination formed by the second surface and the upper surface of the track unit.

[0094] One side of the stop member located on the trolley unit contacts and moves with the track unit. As the trolley unit moves along the end of the track unit along its length, the stop member will first pass the second side.

[0095] Therefore, the trolley unit can slide smoothly toward the end of the track unit along its length until the stop member contacts the first surface.

[0096] Furthermore, the first surface is closer to the end of the track unit along its length than the second surface. The inclination formed by the first surface and the upper surface of the track unit is greater than the inclination formed by the second surface and the upper surface of the track unit.

[0097] Therefore, if the stop member contacts the first surface, the trolley unit will not slide toward the end of the track unit in the length direction without additional operation.

[0098] Furthermore, the second surface is further away from the end of the track unit along its length than the first surface. The inclination formed by the second surface and the upper surface of the track unit is less than the inclination formed by the first surface and the upper surface of the track unit.

[0099] Therefore, if the trolley unit moves away from the end of the track unit along its length, the stop member can move along the second surface while in contact with the second surface.

[0100] Furthermore, the stop member is elastically connected to the trolley unit using an elastic member. With the stop member in contact with the first surface, the user can rotate the stop member in the direction the elastic member extends. As a result, the portion of the stop member in contact with the first surface will rotate and move upwards towards the track unit.

[0101] Therefore, with the stop member in contact with the first surface, after the user rotates the stop member, the trolley unit can move an additional distance toward the end of the track unit along its length.

[0102] Additionally, blocking plates can be fastened to both the trolley unit and the track unit. The blocking plates are fastened to the ends of both the trolley unit and the track unit along their length, respectively. That is, the blocking plates are fastened to both the trolley unit and the track unit simultaneously.

[0103] Therefore, the trolley unit and the track unit are kept together and fastened at their respective ends along the length direction. As a result, the trolley unit will not slide arbitrarily along the track unit. Attached Figure Description

[0104] Figure 1 This is a perspective view illustrating a modular multilevel converter including sub-modules from embodiments of the present invention.

[0105] Figure 2 This is a perspective view illustrating a sub-module of an embodiment of the present invention.

[0106] Figure 3 It is shown Figure 2 A partially enlarged 3D view showing the connection relationship between the capacitor assembly and valve assembly of the submodule.

[0107] Figure 4 It is shown from another angle Figure 2 A 3D view of the sub-module.

[0108] Figure 5 It shows the combination with Figure 2 A partially enlarged 3D view of the grounding portion of the capacitor assembly in the submodule.

[0109] Figure 6 It shows that it can be electrically connected to Figure 5 A cross-sectional view of the internal structure of the grounding rod unit of the grounding part.

[0110] Figure 7 It shows the setting in Figure 2 A 3D view of the valve assembly of the sub-module.

[0111] Figure 8 It shows the setting in Figure 7 Partial perspective perspective view of the electronic equipment and insulation components of the valve assembly.

[0112] Figure 9 It is shown that it is used for Figure 8 A partially enlarged perspective view of the conductors used for insulation between the insulated components and the track assembly.

[0113] Figure 10 It shows the setting in Figure 7 Partially exploded perspective view of the connection relationship between the explosion-proof frame part of the valve assembly.

[0114] Figure 11 It shows the setting in Figure 7 An exploded perspective view of the connection relationship between the explosion-proof frame of the valve assembly.

[0115] Figure 12 It is shown Figure 10 and Figure 11 A perspective view of the included outer shell unit.

[0116] Figure 13 It shows the setting in Figure 2 The main view of the track component in the submodule.

[0117] Figure 14 It is shown Figure 13 A 3D view of the track assembly and anti-detachment parts.

[0118] Figure 15 It shows that Figure 14A side view of the anti-detachment part inserted into the stop slot.

[0119] Figure 16 It shows that Figure 14 A side view of the anti-detachment part being installed in the support part.

[0120] Figure 17 This shows the use of setting in Figure 2 A three-dimensional diagram showing the process of separating the sub-modules to bring out the trolley unit.

[0121] Figure 18 This shows the use of setting in Figure 2 A three-dimensional diagram showing the process of assembling the sub-modules into the trolley unit.

[0122] Figure 19 It shows the setting in Figure 1 Rear perspective view of the short-circuit adjustment section of a modular multilevel converter.

[0123] Figure 20a It shows through Figure 19 A three-dimensional diagram showing how the short-circuit adjustment unit puts each submodule in a state before it short-circuits with the others.

[0124] Figure 20b It shows through Figure 19 A three-dimensional diagram showing how the short-circuit adjustment unit puts each submodule in a state of short-circuiting with each other.

[0125] Figure 21 It shows the setting in Figure 19 A schematic diagram of the rotation process of the short-circuit adjustment lever of the indicator component of the short-circuit adjustment section.

[0126] Figure 22 It shows the setting in Figure 2 A three-dimensional view of the cooling flow path of the sub-module.

[0127] Figure 23 It is shown from another angle Figure 22 A partially enlarged 3D view of the main piping unit of the cooling flow path section.

[0128] Figure 24 It is shown from another angle Figure 23 A partially enlarged 3D view of the main piping unit.

[0129] Figure 25 It is shown Figure 22 A partially enlarged perspective view of the connection relationship between the piping connection unit and the valve connection piping in the cooling flow path section. Detailed Implementation

[0130] Hereinafter, the sub-modules of embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0131] In the following description, some structural elements may be omitted in order to clarify the features of the present invention.

[0132] 1. Definition of terms

[0133] As used in the following description, the term "energized" refers to the state in which an electrical signal, such as current, is transmitted between one or more components. In one embodiment, the energized state may be formed by a wire or the like.

[0134] As used in the following description, the term "connected" refers to a state in which one or more components are connected in a manner that allows for fluid flow. In one embodiment, the connected state may be achieved by piping or the like.

[0135] As used in the following description, the term "cooling fluid" refers to any fluid capable of exchanging heat with another component. In one embodiment, the cooling fluid may be water.

[0136] The terms “front side,” “rear side,” “left side,” “right side,” “upper side,” and “lower side” used in the following description can be found in [reference needed]. Figure 1 The coordinate system shown is used for understanding. That is, in the following description, it is based on the premise that the valve assembly 200 is located in front of the capacitor assembly 100.

[0137] 2. Modular multilevel converter of the present invention Multi level Converter 1 Explanation of composition

[0138] Reference Figure 1 The present invention illustrates a modular multilevel converter 1 according to an embodiment of the present invention. The modular multilevel converter 1 can function as a STATCOM (Static Synchronous Compensator).

[0139] That is, the modular multilevel converter 1 is a static ineffective power compensation device that performs the function of improving stability by supplementing the voltage loss during power transmission or distribution.

[0140] The multilevel converter 1 of this embodiment includes a plurality of sub-modules 10 and a frame 20.

[0141] Submodule 10 essentially performs the functions of the modular multilevel converter 1 described above. Multiple submodules 10 can be provided. The capacity of the modular multilevel converter 1 can be increased depending on the number of submodules 10 provided.

[0142] The submodules 10 are electrically connected to each other. In one embodiment, the submodules 10 may be connected in series.

[0143] In the illustrated embodiment, there are six sub-modules 10, arranged at predetermined distances from each other in the left-right direction. The number of sub-modules 10 provided can be varied.

[0144] Submodule 10 is supported by frame 20. In the illustrated embodiment, submodule 10 is supported by frame 20 forming a single layer.

[0145] The frame 20 forms the skeleton of the modular multilevel converter 1. The frame 20 supports the submodule 10 on the upper or lower side.

[0146] Submodule 10 will be described in detail later.

[0147] The frame 20 can be formed of a material with high rigidity. In one embodiment, the frame 20 can be formed of steel. In addition, the frame 20 is configured in the shape of an H-beam, thereby further enhancing the axial rigidity of the frame 20.

[0148] There can be a plurality of frames 20. A plurality of frames 20 can be stacked on top of each other. Sub-modules 10 supported by frames 20 can also be configured as a plurality of layers. This increases the capacity of the modular multilevel converter 1.

[0149] In the illustrated embodiment, frame 20 includes: a vertical frame 21, a horizontal frame 22, and a support 23. Additionally, referring to... Figure 19 The frame 20 also includes an insulating member 24, which is referred to in further detail. Figure 22 Frame 20 also includes fixed frame 25.

[0150] The vertical frame 21 forms the vertical skeleton of the frame 20. The vertical frame 21 extends in the vertical direction. Connecting plates are provided at the upper and lower ends of the vertical frame 21. The connecting plates are quadrilateral in shape. The connecting plates are connected to the ground or to the connecting plates of another vertically stacked frame 20.

[0151] In the illustrated embodiment, vertical frames 21 are respectively disposed on the front left and right sides, and the rear left and right sides. Thus, there are a total of four vertical frames 21. The number of vertical frames 21 can be varied.

[0152] The vertical frame 21 is combined with the horizontal frame 22. Under the action of the horizontal frame 22, the vertical frame 21 can maintain a preset angle.

[0153] The horizontal frame 22 forms the front-to-back skeleton of the frame 20. The horizontal frame 22 extends in the front-to-back direction. The front end of the horizontal frame 22 is joined to the vertical frame 21 disposed on the front side. The rear end of the horizontal frame 22 is joined to the vertical frame 21 disposed on the rear side.

[0154] Therefore, the deformation of the vertical frame 21 in the front-to-back direction and the deformation of the horizontal frame 22 in the up-to-down direction can be minimized.

[0155] In the illustrated embodiment, the horizontal frames 22 are respectively disposed on the left and right sides. Furthermore, the horizontal frames 22 on the left and right sides can be spaced apart from each other in the vertical direction. Thus, there are a total of four horizontal frames 22, but their number can be varied.

[0156] A support portion 23 is integrated into the horizontal frame 22. The horizontal frame 22 supports the left and right ends of the support portion 23.

[0157] The support portion 23 supports the lower submodule 10. The support portion 23 is connected to the horizontal frame 22. Specifically, the left end of the support portion 23 is connected to the horizontal frame 22 located on the left side. The right end of the support portion 23 is connected to the horizontal frame 22 located on the right side.

[0158] The support component 23 includes a plurality of beam members. Each beam member may have an H-beam shape. The plurality of beam members are spaced apart from each other at a predetermined distance and are arranged continuously in the front-to-back direction.

[0159] A submodule 10 is mounted on the upper side of the support portion 23. As described later, a track unit 540 of the track assembly 500 is fixedly attached to the upper side of the support portion 23. In addition, a cart unit 510 of the submodule 10 is slidably attached to the track unit 540.

[0160] Refer to Figure 19 The beam member located on the rearmost side among the plurality of beam members in the support section 23 may be provided with a short-circuit adjustment section 800. This will be described in detail later.

[0161] The fixed frame 25 and the horizontal frame 22 form a prescribed angle and extend.

[0162] In one embodiment, the fixing frame 25 may extend from the left horizontal frame 22 to the right horizontal frame 22. Alternatively, in another embodiment, the fixing frame 25 may extend vertically relative to the horizontal frame 22.

[0163] 3. Description of the structure of submodule 10 in this embodiment of the invention

[0164] Reference Figure 1The modular multilevel converter 1 of this embodiment includes a submodule 10. The submodule 10 is provided in the form of a module, which can be added to or removed from the modular multilevel converter 1.

[0165] That is, the number of sub-modules 10 provided in the modular multilevel converter 1 can be changed. As a result, the capacity of the modular multilevel converter 1 can be changed.

[0166] Reference Figures 2 to 9 The illustrated embodiment's submodule 10 includes a capacitor assembly 100 and a valve assembly 200. Additionally, referring to... Figure 19 and Figure 22 It also includes: a grounding part 300, an explosion-proof frame part 400, a track assembly 500, an anti-detachment part 600, an installation separation part 700, a short-circuit adjustment part 800, and a cooling flow path part 900.

[0167] Hereinafter, the various components of the submodule 10 of the present invention will be described in detail with reference to the accompanying drawings, and the grounding part 300, the explosion-proof frame part 400, the track assembly 500, the anti-detachment part 600, the mounting separation part 700, the short-circuit adjustment part 800, and the cooling flow path part 900 will be described separately.

[0168] (1) Description of capacitor assembly 100

[0169] The capacitor assembly 100 internally includes a capacitor element (not shown). The capacitor assembly 100 is electrically connected to the valve assembly 200. The capacitor element (not shown) inside the capacitor assembly 100 can be charged or discharged by the switching action of the valve assembly 200.

[0170] Therefore, the capacitor element (not shown) can store the electrical energy input to the submodule 10. The electrical energy stored in the capacitor element (not shown) can be used as a power source to drive the various components of the submodule 10. In addition, the electrical energy can be supplied as spare power to an external power system that is electrically connected to the submodule 10.

[0171] In the illustrated embodiment, the capacitor assembly 100 is connected to the rear side of the valve assembly 200. This is because, compared to the capacitor assembly 100, situations often require maintenance of the valve assembly 200. That is, as will be described later, this is to facilitate easy separation of the valve assembly 200 only from the front side.

[0172] The capacitor assembly 100 is supported by the track assembly 500. Specifically, the capacitor assembly 100 is disposed in the capacitor trolley unit 510a of the track assembly 500. In one embodiment, the capacitor assembly 100 may be fixedly coupled to the capacitor trolley unit 510a.

[0173] As described below, the capacitor trolley unit 510a can slide forward or backward along the track unit 540. Therefore, the capacitor assembly 100 can also slide forward or backward together with the capacitor trolley unit 510a.

[0174] In the illustrated embodiment, the capacitor assembly 100 is formed to have a larger size than the valve assembly 200. This depends on the size of the capacitor element (not shown) internally mounted in the capacitor assembly 100. That is, the size of the capacitor assembly 100 can be varied according to the size of the capacitor element (not shown).

[0175] The capacitor assembly 100 includes a capacitor housing 110 and a capacitor connector 120.

[0176] The capacitor housing 110 forms the outline of the capacitor assembly 100. A defined space is formed inside the capacitor housing 110. A capacitor element (not shown) can be installed in the space. The installed capacitor element (not shown) is electrically connected to the valve assembly 200 via a capacitor connector 120.

[0177] The capacitor housing 110 may be formed of a rigid material. This is to prevent the impact on adjacent submodules 10 and valve assembly 200, etc., in the event that the capacitor element (not shown) housed inside explodes for unpredictable reasons.

[0178] A residual water collection unit 960 of the cooling flow path 900 (described later) is attached to the upper side of the capacitor housing 110. Additionally, a capacitor trolley unit 510a is attached to the lower side of the capacitor housing 110.

[0179] The front side of the capacitor housing 110 is electrically connected to the valve assembly 200 via the capacitor connector 120.

[0180] Capacitor connector 120 is electrically connected to capacitor assembly 100 and valve assembly 200. Capacitor connector 120 is electrically connected to capacitor element (not shown) and valve connector 220 of valve assembly 200.

[0181] If the capacitor assembly 100 or the valve assembly 200 slides toward each other, the capacitor connector 120 can slide to the valve connector 220 and be inserted into it. This establishes an energized state between the capacitor connector 120 and the valve connector 220.

[0182] The energization state between the capacitor assembly 100 and the valve assembly 200 can be easily formed or de-energized through the aforementioned combination method.

[0183] In the illustrated embodiment, a capacitor connector 120 is formed on the front side of the capacitor assembly 100 facing the valve assembly 200. The capacitor connector 120 has a plate-like shape that protrudes a predetermined distance from the front side of the capacitor housing 110.

[0184] The capacitor connector 120 can be any shape that can be electrically coupled to the valve connector 220.

[0185] There may be a plurality of capacitor connectors 120. In the illustrated embodiment, capacitor connector 120 includes a first capacitor connector 121 disposed on the left side and a second capacitor connector 122 disposed on the right side.

[0186] The first capacitor connector 121 slides to and electrically engages with the valve connector 220 located on the left side. Additionally, the second capacitor connector 122 slides to and electrically engages with the valve connector 220 located on the right side.

[0187] (2) Description of valve assembly 200

[0188] Valve assembly 200 is the part of submodule 10 that can be electrically connected to an external power source or load. Additionally, valve assembly 200 can be electrically connected to capacitor assembly 100, allowing for the input or output of electrical energy.

[0189] The valve assembly 200 may have a plurality of switching modules internally. In one embodiment, the switching module may be an IGBT (Insulated Gate Bipolar Transistor) 440.

[0190] Additionally, the valve assembly 200 may internally have a control board for controlling the switching module. In one embodiment, the control board may be a printed circuit board (PCB) 280.

[0191] The submodule 10 of this embodiment of the invention can prevent damage to another IGBT 440 and other components of the submodule 10 caused by the explosion of one IGBT 440. The IGBT 440 and the configuration for achieving the above objective will be described separately in "Explosion-proof Frame Part 400".

[0192] In the illustrated embodiment, the valve assembly 200 is located in front of the capacitor assembly 100. This is because maintenance of the valve assembly 200 is performed more frequently than that of the capacitor assembly 100.

[0193] The valve assembly 200 can be easily connected to or disconnected from the capacitor assembly 100 via the mounting separation part 700. This will be described in detail later.

[0194] The valve assembly 200 is supported by the track assembly 500. Specifically, the valve assembly 200 is mounted on the valve trolley unit 510b of the track assembly 500. In one embodiment, the valve assembly 200 may be fixedly coupled to the valve trolley unit 510b.

[0195] As described later, the valve trolley unit 510b can slide forward or backward along the track unit 540. Consequently, the valve assembly 200 can also slide forward or backward together with the valve trolley unit 510b.

[0196] In the illustrated embodiment, the valve assembly 200 includes: a valve cover 210, a valve connector 220, an input bus 230, a bypass switch 240, an output bus 250, an insulating housing 260, an insulating layer 270, and a printed circuit board 280.

[0197] The valve cover portion 210 forms part of the outer shape of the valve assembly 200. Specifically, the valve cover portion 210 forms the outer surfaces of the left and right sides of the valve assembly 200.

[0198] The valve cover portion 210 is configured to cover the insulating housing 260. Under the action of the valve cover portion 210, the printed circuit board 280 and other components installed inside the insulating housing 260 will not be exposed to the outside.

[0199] The valve cover 210 can be fixedly attached to the insulating housing 260 by fastening components such as screws.

[0200] The valve cover portion 210 is configured to shield electromagnetic noise components generated from the printed circuit board 280 or IGBT 440. In one embodiment, the valve cover portion 210 may be formed of aluminum (Al).

[0201] A plurality of through holes are formed in the valve cover portion 210. The through holes connect the internal space of the insulating housing 260 to the outside. Air can flow in through the through holes, thereby cooling the printed circuit board 280 or IGBT 440.

[0202] The valve cover portion 210 is electrically connected to the trolley unit 510 of the track assembly 500. This connection can be achieved by the grounding wire portion 340. Thus, the valve cover portion 210 is grounded, thereby preventing unnecessary energization.

[0203] The direction from the valve cover portion 210 toward the explosion-proof frame portion 400 can be defined as the "inner direction". Alternatively, the direction from the explosion-proof frame portion 400 toward the valve cover portion 210 can be defined as the "outer direction".

[0204] An insulating housing 260 is provided on the inner side of the valve cover portion 210.

[0205] Valve connector 220 electrically connects valve assembly 200 and capacitor assembly 100. Valve connector 220 is located on the side of valve assembly 200 facing capacitor assembly 100, i.e., the rear side in the illustrated embodiment.

[0206] The valve connector 220 is formed by extending in one direction, namely the front-back direction in the illustrated embodiment.

[0207] One side of the valve connector 220, i.e., the front side in the illustrated embodiment, is electrically connected to the output bus 250. In the illustrated embodiment, this side of the valve connector 220 is threaded into the output bus 250.

[0208] The other side of valve connector 220, i.e. the rear side in the illustrated embodiment, is electrically connected to capacitor connector 120.

[0209] The valve connector 220 can be composed of a pair of plate members spaced apart from each other by a predetermined distance. That is, in the illustrated embodiment, each valve connector 220 is respectively disposed in the outer and inner directions and is arranged facing each other.

[0210] The capacitor connector 120 can slide into the space formed by a pair of plate members spaced apart by the specified distance, and can be inserted into or detached from it.

[0211] The ends of the pair of plate members facing the capacitor assembly 100, i.e., the rear ends in the illustrated embodiment, are formed outward in an arc. This allows for easy sliding engagement and disengagement.

[0212] A pair of plate members may each include a plurality of bar members. In the illustrated embodiment, a pair of plate members includes four bar members stacked vertically. The number can be varied.

[0213] There may be a plurality of valve connectors 220. In the illustrated embodiment, two valve connectors 220 are arranged with a predetermined distance between them in the vertical direction. In addition, four valve connectors 220 are respectively provided on two output buses 250.

[0214] The number of valve connectors 220 can be changed to any number that can form the energized state of valve assembly 200 and capacitor assembly 100.

[0215] The input busbar 230 connects the submodule 10 to an external power source or load in a powerable manner.

[0216] In the illustrated embodiment, the input bus 230 is formed by protruding a predetermined distance from the front side of the explosion-proof frame portion 400. The front side of the input bus 230 is energized to be connected to an external power source or load. The front side of the input bus 230 is also energized to be connected to a bypass switch 240.

[0217] Additionally, the rear side of the input bus 230 can be energizedly connected to the energized bus 420.

[0218] There may be a plurality of input buses 230. In the illustrated embodiment, the input buses 230 include a first input bus 231 located on the upper side and a second input bus 232 located on the lower side.

[0219] The first input bus 231 is energizedly connected to the first energized bus 421. Therefore, the first input bus 231 can be energizedly connected to the first IGBT 441.

[0220] The second input bus 232 is energizedly connected to the second energized bus 422. Therefore, the second input bus 232 can be energizedly connected to the second IGBT 442.

[0221] The first input bus 231 and the second input bus 232 are respectively energized and connected to an external power source or load. Additionally, the first input bus 231 and the second input bus 232 are energized and connected to a bypass switch 240.

[0222] The bypass switch 240 is configured to exclude the corresponding submodule 10 from the modular multilevel converter 1 in the event of a problem with any structural element of the submodule 10.

[0223] Specifically, the bypass switch 240 can electrically short-circuit the first input bus 231 and the second input bus 232 of the corresponding submodule 10. As a result, the current flowing into one of the first input buses 231 and the second input bus 232 of the corresponding submodule 10 flows out through the other input bus.

[0224] Therefore, the corresponding submodule 10 will act as a wire, which can be electrically excluded from the modular multilevel converter 1.

[0225] The bypass switch 240 is located on the front side of the explosion-proof frame 400, between the first input bus 231 and the second input bus 232. The bypass switch 240 is electrically connected to the first input bus 231 and the second input bus 232.

[0226] The output bus 250 can be electrically connected to the IGBT 440 and the capacitor assembly 100.

[0227] In the illustrated embodiment, the output bus 250 is formed to protrude a predetermined distance toward the rearward side of the capacitor assembly 100. A valve connector 220 is electrically coupled to said rearward side of the output bus 250. In one embodiment, the valve connector 220 may be threaded onto the output bus 250.

[0228] The front side of the output bus 250 can be energizedly connected to the energized bus 420, which is energizedly connected to the IGBT 440.

[0229] There may be a plurality of output buses 250. In the illustrated embodiment, there are two output buses 250, which are arranged apart from each other by a predetermined distance. The predetermined distance may be equal to the distance between the first capacitor connector 121 and the second capacitor connector 122.

[0230] The output bus 250 can be integrated into the housing unit 410 to cover the IGBT housing 413 together with the energized bus 420. The output bus 250 and the energized bus 420 are electrically connected.

[0231] In the illustrated embodiment, the output bus 250 is located behind the energized bus 420. Thus, the output bus 250 is configured to cover the rear side of the IGBT housing 413.

[0232] The output bus 250 includes: a first portion covering the IGBT housing 413; a second portion formed by bending from the first portion at a predetermined angle and covering one side of the housing unit 410 (the rear side in the illustrated embodiment); and a third portion extending from the second portion and engaging with the valve connector 220.

[0233] The insulating housing 260 internally houses the printed circuit board 280. Furthermore, the insulating housing 260 is electrically connected to the energized bus 420 to electrically connect the printed circuit board 280 and the IGBT 440. Thus, the IGBT 440 can operate according to control signals processed in the printed circuit board 280.

[0234] There are multiple insulating housings 260. In the illustrated embodiment, there are two insulating housings 260, which are respectively disposed on the left and right sides of the explosion-proof frame portion 400.

[0235] The outer side of the insulating housing 260, i.e., the side away from the explosion-proof frame portion 400, i.e., the side opposite to the explosion-proof frame portion 400, can be covered by the valve cover portion 210. In the illustrated embodiment, the valve cover portion 210 is respectively provided on the left side of the insulating housing 260 located on the left and on the right side of the insulating housing 260 located on the right.

[0236] The insulating housing 260 can shield electromagnetic noise generated from the printed circuit board 280 or IGBT 440. The insulating housing 260 can be formed of aluminum.

[0237] Therefore, thanks to the valve cover 210 and the insulating housing 260, electromagnetic noise generated from the printed circuit board 280 or IGBT 440 will not leak arbitrarily to the outside.

[0238] A defined space is formed inside the insulating housing 260. An insulating layer 270 and a printed circuit board 280 are disposed in the space.

[0239] The insulating housing 260 includes a first wall 261, a second wall 262, a third wall 263, and a fourth wall 264.

[0240] The first wall 261 forms the front side wall of the insulating housing 260. The second wall 262 forms the rear side wall of the insulating housing 260. The first wall 261 and the second wall 262 are arranged facing each other.

[0241] The third wall 263 forms the upper side wall of the insulating housing 260. The fourth wall 264 forms the lower side wall of the insulating housing 260. The third wall 263 and the fourth wall 264 are arranged facing each other.

[0242] The inner sides of the first wall 261, the second wall 262, the third wall 263, and the fourth wall 264 may be formed of a material capable of blocking electromagnetic noise. In one embodiment, the first wall 261, the second wall 262, the third wall 263, and the fourth wall 264 may be formed of aluminum.

[0243] In addition, the bottom surface covered by the insulating layer 270, i.e., one side of the insulating housing 260 facing the valve cover portion 210, can also be formed of aluminum material.

[0244] Therefore, the internal space of the insulating housing 260 can be electrically shielded by the valve cover portion 210 and each surface of the insulating housing 260. As a result, electromagnetic noise generated from the printed circuit board 280 or IGBT 440 will not leak arbitrarily to the outside.

[0245] The insulating layer 270 and the printed circuit board 280 are housed in a space surrounded by a first wall 261, a second wall 262, a third wall 263 and a fourth wall 264.

[0246] The insulating layer 270 is configured to block electromagnetic noise generated from the IGBT 440 from entering the internal space of the insulating housing 260. Additionally, the insulating layer 270 can also prevent electromagnetic noise generated from the printed circuit board 280 from moving towards the IGBT 440.

[0247] The insulating layer 270 is configured to cover one side of the insulating housing 260. That is, the insulating layer 270 is located between the side of the insulating housing 260 facing the valve cover portion 210 and the printed circuit board 280.

[0248] Therefore, the space formed inside the insulating housing 260 is surrounded by the insulating layer 270 on the side facing the explosion-proof frame portion 400.

[0249] The shape of the insulating layer 270 can be changed in accordance with the shape of one side of the insulating housing 260.

[0250] The insulating layer 270 can be formed of any material capable of blocking electromagnetic noise. In one embodiment, the insulating layer 270 can be formed of a polyimide material.

[0251] A printed circuit board 280 is provided on the side of the insulating layer 270 facing the valve cover portion 210, i.e., in the outward direction.

[0252] The printed circuit board 280 calculates the control signals used to control the IGBT 440. Additionally, the printed circuit board 280 transmits the calculated control signals to the IGBT 440, thereby controlling the drive of the submodule 10.

[0253] Printed circuit board 280 is electrically connected to IGBT 440. Additionally, printed circuit board 280 is electrically connected to power bus 420. Thus, external power and control signals can be transmitted to printed circuit board 280.

[0254] The printed circuit board 280 is housed within the interior space of the insulating housing 260. As described above, an insulating layer 270 is provided between the printed circuit board 280 and one side of the insulating housing 260.

[0255] Therefore, the printed circuit board 280 extends through the insulating layer 270 and the insulating housing 260 on one side, thereby enabling it to be electrically connected to the energized bus 420.

[0256] There may be a plurality of printed circuit boards 280. In the illustrated embodiment, there may be five printed circuit boards 280, but the number may be varied.

[0257] 4. Description of the grounding portion 300 in an embodiment of the present invention

[0258] Submodule 10 of this embodiment includes a grounding portion 300. The grounding portion 300 can be electrically connected to a capacitor element (not shown) disposed on the capacitor assembly 100. Thus, the electrical energy stored in the capacitor element (not shown) can be discharged to the ground.

[0259] Specifically, there may be situations where submodule 10 needs to be moved for maintenance or relocation purposes. In such cases, if electrical energy remains in the capacitor element (not shown), there is a risk of explosion.

[0260] Therefore, the submodule 10 of this embodiment of the invention can easily release the electrical energy stored in the capacitor element (not shown) through the grounding portion 300.

[0261] In the illustrated embodiment, the grounding portion 300 includes: a grounding rod unit 310, a grounding connector 320, a grounding protrusion 330, and a grounding wire portion 340.

[0262] The grounding rod unit 310 forms the main body of the grounding portion 300. The grounding rod unit 310 extends in one direction, namely the front-to-back direction in the illustrated embodiment.

[0263] The grounding rod unit 310 can be inserted into and connected to the grounding protrusion 330, which is electrically connected to the capacitor connector 120. Additionally, the grounding rod unit 310 can be electrically connected to the grounding protrusion 330.

[0264] Thus, the electrical energy stored in the capacitor element (not shown) can be grounded via the capacitor connector 120 and the grounding rod unit 310.

[0265] The grounding rod unit 310 can be detachably inserted into the grounding protrusion 330. When grounding is not required for a capacitor element (not shown), the grounding rod unit 310 can be moved in a direction away from the capacitor assembly 100, i.e., in the opposite direction to the capacitor assembly 100. Thus, the grounding rod unit 310 can be separated from the grounding protrusion 330.

[0266] The grounding rod unit 310 can pass through the grounding rod through hole 412 that is coupled to the explosion-proof frame part 400. The grounding rod unit 310 can be guided by the grounding rod through hole 412 to move toward the grounding protrusion 330.

[0267] In the illustrated embodiment, the grounding rod unit 310 has a cylindrical shape with a hollow portion formed inside. The grounding rod unit 310 can have any shape that can be electrically connected with the grounding protrusion 330. In this case, the shape of the grounding rod unit 310 is preferably determined corresponding to the shape of the grounding rod through hole 412.

[0268] There may be a plurality of grounding rod units 310. In the illustrated embodiment, the grounding rod unit 310 includes a first grounding rod unit 310a and a second grounding rod unit 310b.

[0269] The first grounding rod unit 310a can be electrically inserted and coupled to the first grounding protrusion 331. In addition, the second grounding rod unit 310b can be electrically inserted and coupled to the second grounding protrusion 332.

[0270] The grounding rod unit 310 includes: a main body 311, a connecting part 312, a grounding conductor part 313, a grounding wire part 314, a sealing part 315, and a resistor part 316.

[0271] The main body 311 forms the main body of the grounding rod unit 310. The main body 311 extends along the length direction, i.e., the front-to-back direction in the illustrated embodiment. The main body 311 is cylindrical in shape with a circular cross-section and has a hollow portion formed inside. Various structural elements for grounding are installed in the hollow portion.

[0272] The joint portion 312 is the part where the grounding rod unit 310 and the grounding protrusion 330 are joined. The joint portion 312 is formed to extend a predetermined distance from the rear end of the grounding protrusion 330, i.e., in the illustrated embodiment.

[0273] The joint portion 312 is located in the hollow portion formed inside the main body portion 311. The outer surface of the joint portion 312 can contact the inner surface of the main body portion 311 surrounding the hollow portion.

[0274] A hollow portion is formed inside the joint 312. The diameter of the hollow portion can be less than or equal to the diameter of the grounding protrusion 330.

[0275] The joint 312 can be formed of a material capable of elastic deformation. Therefore, when the grounding protrusion 330 is inserted into the hollow portion of the joint 312, the shape of the joint 312 can deform and store restoring force. Under the action of this restoring force, the joint 312 can stably hold the grounding protrusion 330.

[0276] In one embodiment, the joint 312 may be formed of a rubber material.

[0277] Thus, the grounding protrusion 330 is clamped into the joint 312, thereby stably maintaining the joint state between the grounding rod unit 310 and the grounding protrusion 330.

[0278] The grounding conductor 313 and the grounding protrusion 330 are electrically connected. Electrical energy stored in the capacitor element (not shown) can be moved to the resistor 316 through the grounding conductor 313.

[0279] The grounding conductor portion 313 is formed to surround the joint portion 312 on the outside. That is, the rear end of the grounding conductor portion 313 on the side facing the grounding protrusion 330, i.e., the rear end in the illustrated embodiment, forms the rear end of the main body portion 311.

[0280] A hollow portion is formed inside the grounding conductor portion 313. A connecting portion 312 is accommodated within a portion of the hollow portion, i.e., the rear side in the illustrated embodiment. A portion is formed on the remaining portion of the hollow portion, i.e., the front side in the illustrated embodiment, that contacts the end of the grounding protrusion 330. The shape of this portion can be determined corresponding to the shape of the grounding protrusion 330.

[0281] The grounding conductor portion 313 extends in a direction away from the joint portion 312, i.e., in the opposite direction to the joint portion 312. The other side of the grounding conductor portion 313, i.e., the front end in the illustrated embodiment, is electrically connected to the rear end of the grounding wire portion 314. In one embodiment, the front side of the grounding conductor portion 313 and the rear side of the grounding wire portion 314 can be fastened by a screw member.

[0282] The grounding wire section 314 is energized and connected to the grounding conductor section 313 and the resistor section 316. The grounding wire section 314 is energized and connected to both the grounding conductor section 313 and the resistor section 316.

[0283] The grounding wire portion 314 extends along its length, i.e., in the front-to-back direction in the illustrated embodiment. The rear end of the grounding wire portion 314 is electrically connected to the grounding conductor portion 313. The front end of the grounding wire portion 314 is electrically connected to the resistor portion 316.

[0284] A sealing portion 315 is provided on the side of the grounding wire portion 314 of the main body portion 311 that is exposed to the outside, i.e., the front end in the illustrated embodiment. The sealing portion 315 holds the grounding wire portion 314 in place. In addition, the sealing portion 315 seals the space to prevent foreign objects such as dust from entering the space inside the main body portion 311.

[0285] The sealing part 315 is configured to surround the grounding wire part 314. This prevents the grounding wire part 314 from moving along the length direction or along the radial direction.

[0286] The resistor 316 performs the function of receiving electrical energy stored in a capacitor element (not shown) and discharging the capacitor element (not shown). The resistor 316 is electrically connected to the grounding wire 314.

[0287] The resistor 316 can be provided in any form that receives and consumes electrical energy.

[0288] The grounding connector 320 can electrically connect the capacitor connector 120 and the grounding protrusion 330.

[0289] The ground connector 320 is electrically connected to the capacitor connector 120. Thus, the ground connector 320 and the capacitor element (not shown) can be electrically connected.

[0290] The grounding connector 320 is electrically connected to the grounding protrusion 330. Thus, the capacitor element (not shown) and the grounding protrusion 330 can be electrically connected.

[0291] A plate member forming a predetermined angle with the front-rear direction may be provided on the side of the grounding connector 320 facing the valve assembly 200, i.e., the front side. A grounding protrusion 330 may be formed from the plate member in the direction opposite to the valve assembly 200, i.e., the front side. In one embodiment, the predetermined angle may be a right angle.

[0292] In the illustrated embodiment, the ground connector 320 is located above the capacitor connector 120. The ground connector 320 is formed by extending upward from the capacitor connector 120 by a predetermined distance. In one embodiment, the ground connector 320 may be threaded into the capacitor connector 120.

[0293] A residual water collection unit 960 of the cooling flow path 900 can be provided on the upper side of the grounding connector 320. The grounding connector 320 can be configured to support the residual water collection unit 960.

[0294] There may be a plurality of grounding connectors 320. In the illustrated embodiment, the grounding connector 320 includes a first grounding connector 321 and a second grounding connector 322. The first grounding connector 321 is electrically connected to the first capacitor connector 121. The second grounding connector 322 is electrically connected to the second capacitor connector 122.

[0295] The grounding rod unit 310 is inserted into the grounding protrusion 330. The grounding protrusion 330 is formed by protruding a predetermined distance in the direction opposite to the valve assembly 200, i.e., the front side in the illustrated embodiment.

[0296] The protrusion length of the grounding protrusion 330 is preferably determined in accordance with the length of the hollow portion formed inside the grounding conductor portion 313.

[0297] The grounding protrusion 330 is electrically connected to the grounding connector 320 on the side facing the grounding connector 320, i.e., the rear side in the illustrated embodiment. In one embodiment, the grounding protrusion 330 can be formed from the plate member of the grounding connector 320.

[0298] Therefore, if the grounding rod unit 310 is inserted into the grounding protrusion 330, the capacitor element (not shown), capacitor connector 120, grounding connector 320, grounding protrusion 330 and grounding rod unit 310 can be electrically connected.

[0299] The grounding conductor 340 grounds each electrical device housed inside the valve assembly 200. Figure 7 and Figure 8 (as shown most clearly in the diagram). The grounding conductor 340 is electrically connected to the valve trolley unit 510b of each of the aforementioned electrical devices and the track assembly 500.

[0300] The grounding conductor section 340 includes a PCB grounding conductor 341, a housing grounding conductor 342, and a busbar grounding conductor 343.

[0301] PCB grounding wire 341 provides a energized connection between the printed circuit board 280 and the valve trolley unit 510b. Housing grounding wire 342 provides a energized connection between the insulating housing 260 and the valve trolley unit 510b. Bus grounding wire 343 provides a energized connection between the output bus 250 and the valve trolley unit 510b.

[0302] This allows the various electrical devices housed inside the valve assembly 200 to operate stably.

[0303] The following is a reference again. Figure 4 This describes the process of discharging a capacitor element (not shown) through the grounding part 300.

[0304] In the following description, the direction in which the grounding rod unit 310 faces the capacitor assembly 100 is assumed to be the rear side, and the direction in which the grounding rod unit 310 moves away from the capacitor assembly 100, i.e., the opposite direction to the capacitor assembly 100, is assumed to be the front side.

[0305] First, the grounding rod unit 310 moves forward and passes through the grounding rod through hole 412 of the explosion-proof frame part 400. At this time, the grounding rod through hole 412 is formed on the front side and the rear side respectively, and can be configured to have the same central axis.

[0306] If the grounding rod unit 310, which passes through the grounding rod through-holes 412 on the front and rear sides respectively, continues to move forward, it is inserted into the grounding protrusion 330 from the joint 312. At this time, the grounding protrusion 330 can be configured to have the same central axis as the grounding rod through-hole 412.

[0307] Therefore, the shape of the grounding rod unit 310 can be stably combined with the grounding protrusion 330 while maintaining a straight line shape.

[0308] If the grounding protrusion 330 is inserted into the grounding rod unit 310, the shape of the connecting part 312 deforms and the stored restoring force is applied to the grounding protrusion 330. As a result, the connecting state of the grounding protrusion 330 and the grounding rod unit 310 can be stably maintained.

[0309] As the grounding protrusion 330 is inserted, its front end contacts the grounding conductor 313. This creates an energized state between the capacitor element (not shown) and the resistor 316, allowing the electrical energy stored in the capacitor element (not shown) to be released.

[0310] 5. Description of the explosion-proof frame part 400 according to an embodiment of the present invention

[0311] The submodule 10 of this embodiment includes an explosion-proof frame section 400. The explosion-proof frame section 400 can internally accommodate switching elements such as IGBT 440.

[0312] Furthermore, in the event of an explosion of the IGBT 440 it houses, the explosion-proof frame portion 400 of this embodiment can prevent damage to adjacent IGBTs 440. In addition, the explosion-proof frame portion 400 of this embodiment is configured to easily release gases or the like generated by the explosion.

[0313] like Figures 2 to 4 as well as Figures 7 to 9 As shown, the explosion-proof frame portion 400 can be disposed on the valve assembly 200. This is because the IGBT 440, which functions as a switching element, is disposed on the valve assembly 200.

[0314] Therefore, the explosion-proof frame 400 can also be understood as being included in the valve assembly 200.

[0315] The following is for reference Figures 10 to 12 The explosion-proof frame part 400 of the present invention will be described in detail in the embodiments thereof.

[0316] In the illustrated embodiment, the explosion-proof frame 400 includes: a housing unit 410, a power bus 420, a cooling plate 430, and an IGBT 440.

[0317] The outer casing unit 410 forms the shape of the explosion-proof frame portion 400. A power bus 420 and a cooling plate 430 are integrated into the outer casing unit 410.

[0318] A defined space is formed inside the housing unit 410. The IGBT 440 can be accommodated in said space.

[0319] An insulating housing 260 may be attached to the outer side of the housing unit 410, that is, the side away from the cooling plate 430, that is, the side opposite to the cooling plate 430.

[0320] There may be a plurality of housing units 410. In the illustrated embodiment, there are two housing units 410. Each housing unit 410 may be formed in a symmetrical shape. Hereinafter, one housing unit 410 will be described, but it should be understood that the other housing unit 410 also has the same structure.

[0321] The various housing units 410 are assembled to form a defined space between them. A cooling plate 430 and an IGBT 440 are disposed in the defined space.

[0322] An output bus 250 and a energizing bus 420 are connected to the outer side of the housing unit 410, i.e., towards the valve cover portion 210. The output bus 250 and the energizing bus 420 are located between the housing unit 410 and the insulating housing 260.

[0323] A cooling plate 430 is attached to the inner side of the housing unit 410, i.e., in the direction in which the housing units 410 face each other. That is, the cooling plate 430 is located between the housing units 410.

[0324] An IGBT 440 is disposed on the inner side of the housing unit 410, i.e., towards the cooling plate 430. That is, the IGBT 440 is located between the housing unit 410 and the cooling plate 430.

[0325] For the connection between the housing unit 410, the power bus 420, the cooling plate 430 and the IGBT 440, fastening components (not shown) may be provided.

[0326] In addition, the outer casing unit 410, the insulating housing 260, and the valve cover portion 210 can also be joined by fastening members (not shown).

[0327] In one embodiment, the fastening member (not shown) may be a screw member.

[0328] The housing unit 410 may be formed of an insulating material. Alternatively, the housing unit 410 may be formed of a material with heat resistance, pressure resistance, and abrasion resistance. In one embodiment, the housing unit 410 may be formed of a synthetic resin material.

[0329] In the illustrated embodiment, the housing unit 410 extends in a vertical direction. As will be described later, this is because the IGBT 440 has a plurality of units arranged in a vertical direction.

[0330] The housing unit 410 includes: a protrusion 411, a grounding rod through hole 412, an IGBT receiving portion 413, an inner wall portion 414, an outer wall portion 415, an internal connecting groove 416, an external connecting groove 417, a buffer space portion 418, and a corner portion 419.

[0331] A protrusion 411 is formed protruding from the upper side of the outer casing unit 410. A plurality of protrusions 411 may be formed. The plurality of protrusions 411 may be formed at a predetermined distance from each other.

[0332] In the illustrated embodiment, the protrusion 411 protrudes upward from the front and rear sides of the upper side of the housing unit 410. Each protrusion 411 may be located on the same line in the front-rear direction.

[0333] A grounding rod through hole 412 is formed through the protrusion 411.

[0334] The grounding rod unit 310 is connected through the grounding rod through hole 412. The grounding rod through hole 412 is formed through the protrusion 411. In the illustrated embodiment, the grounding rod through hole 412 is formed through in the front-to-back direction.

[0335] The grounding rod through-hole 412 can be formed corresponding to the shape of the grounding rod unit 310. In the illustrated embodiment, the grounding rod unit 310 is cylindrical, and the grounding rod through-hole 412 can be formed with a circular cross-section.

[0336] As described above, the protrusions 411 can be formed on the front side and the rear side, respectively. The grounding rod through-holes 412 can be formed through a plurality of protrusions 411.

[0337] The grounding rod through holes 412 formed in each of the protrusions 411 can be formed to have the same central axis as each other. Alternatively, the grounding rod through holes 412 can be formed to have the same central axis as the grounding protrusions 330.

[0338] IGBT receiving portion 413 accommodates IGBT 440. IGBT receiving portion 413 can be defined by a predetermined space formed inside the housing unit 410. IGBT receiving portion 413 is formed to be recessed a predetermined distance from the side of the housing unit 410 facing the cooling plate 430.

[0339] The IGBT housing 413 can be covered by the output bus 250 and the energizing bus 420. Specifically, the opening of the IGBT housing 413 on the side facing the insulating housing 260 can be covered by the output bus 250 and the energizing bus 420.

[0340] IGBT receiving portions 413 may be formed in a plurality of units. In the illustrated embodiment, the IGBT receiving portion 413 includes: a first IGBT receiving portion 413a, formed on the side facing the protrusion 411; and a second IGBT receiving portion 413b, formed on the other side away from the protrusion 411 (i.e., opposite to the first IGBT receiving portion 413a and the protrusion 411).

[0341] This is because the IGBT 440 includes two IGBTs, namely a first IGBT 441 and a second IGBT 442. That is, the first IGBT 441 is housed in the first IGBT housing 413a, and the second IGBT 442 is housed in the second IGBT housing 413b.

[0342] As described above, there are two housing units 410 that are joined together. Two IGBT receiving portions 413 are formed in one housing unit 410. It should be understood that a total of four IGBTs 440 are received in each explosion-proof frame portion 400.

[0343] The shapes of each IGBT receiving portion 413a, 413b can be determined accordingly to the shapes of each IGBT 441, 442 housed therein. Furthermore, the first IGBT receiving portion 413a and the second IGBT receiving portion 413b can be formed with corresponding shapes.

[0344] A partition wall 413c is formed between the first IGBT receiving portion 413a and the second IGBT receiving portion 413b. If the housing unit 410 and the cooling plate 430 are combined, the side of the partition wall 413c facing the cooling plate 430 contacts the cooling plate 430.

[0345] As a result, the partition wall 413c physically separates the first IGBT housing 413a and the second IGBT housing 413b on the side facing the cooling plate 430. Therefore, even if one of the IGBTs 413a and 413b explodes, it will not affect the other IGBT.

[0346] The IGBT housing 413 is formed with an opening on the side away from the cooling plate 430 (i.e., opposite to the cooling plate 430), facing the energized busbar 420. The IGBT 440 is exposed to the outside of the IGBT housing 413 through this side. The exposed portion of the IGBT 440 is in energized contact with the energized busbar 420.

[0347] On the other hand, the IGBT housing 413 can be defined by the space surrounded by the partition wall 413c, the inner wall 414, and the corner portion 419.

[0348] That is, the first IGBT receiving portion 413a can be defined by the space surrounded by the first inner wall portion 414a forming the front sidewall and the rear sidewall, the partition wall portion 413c forming the lower sidewall, and the corner portion 419 forming the upper sidewall.

[0349] Similarly, the second IGBT receiving portion 413b can be defined by the space surrounded by the second inner wall portion 414b forming the front sidewall and the rear sidewall, the partition wall portion 413c forming the upper sidewall, and the corner portion 419 forming the lower sidewall.

[0350] The inner wall portion 414 partially surrounds the IGBT receiving portion 413. In the illustrated embodiment, the inner wall portion 414 is formed to surround the front and rear sides of the IGBT receiving portion 413. The inner wall portion 414 may be continuous with the partition wall portion 413c.

[0351] The inner wall portion 414 may be surrounded by the outer wall portion 415. The inner wall portion 414 and the outer wall portion 415 are separated by a predetermined distance. Through the separation structure, the space formed between the inner wall portion 414 and the outer wall portion 415 is defined as a buffer space portion 418.

[0352] If the outer casing unit 410 and the cooling plate 430 are combined, the side of the inner wall portion 414 facing the cooling plate 430 will contact the cooling plate 430.

[0353] An internal communication groove 416 is formed in the inner wall portion 414. Gas generated by the explosion of IGBT 440 can flow into the buffer space portion 418 through the internal communication groove 416.

[0354] The inner wall portion 414 includes a first inner wall portion 414a and a second inner wall portion 414b.

[0355] The first inner wall portion 414a partially surrounds the first IGBT receiving portion 413a. The first inner wall portion 414a is located on the side facing the protrusion 411, i.e., the upper side in the illustrated embodiment.

[0356] The second inner wall portion 414b partially surrounds the second IGBT receiving portion 413b. The second inner wall portion 414b is located on the side away from the protrusion 411 (i.e., opposite to the protrusion 411), i.e., the lower side in the illustrated embodiment.

[0357] The outer wall portion 415 partially surrounds the inner wall portion 414. In the illustrated embodiment, the outer wall portion 415 is formed to surround the front and rear sides of the inner wall portion 414. The outer wall portion 415 may be continuous with the corner portion 419.

[0358] The outer wall portion 415 and the inner wall portion 414 are separated by a predetermined distance. The space formed between the outer wall portion 415 and the inner wall portion 414 by the separation structure is defined as a buffer space portion 418.

[0359] If the outer casing unit 410 and the cooling plate 430 are combined, the side of the outer wall portion 415 facing the cooling plate 430 will contact the cooling plate 430.

[0360] An external communication groove 417 is formed in the outer wall portion 415. Gas generated by the explosion of IGBT 440 can be discharged to the outside of the explosion-proof frame portion 400 through the buffer space portion 418 and via the external communication groove 417.

[0361] The outer wall portion 415 includes a first outer wall portion 415a and a second outer wall portion 415b.

[0362] The first outer wall portion 415a partially surrounds the first inner wall portion 414a and the first buffer space portion 418a. The first outer wall portion 415a is located on the side facing the protrusion 411, i.e., the upper side in the illustrated embodiment.

[0363] The second outer wall portion 415b partially surrounds the second inner wall portion 414b and the second buffer space portion 418b. The second outer wall portion 415b is located on the side away from the protrusion 411 (i.e., opposite to the protrusion 411), i.e., the lower side in the illustrated embodiment.

[0364] The internal communication channel 416 connects the IGBT housing 413 and the buffer space 418. Gas generated by the explosion of the IGBT 440 can flow from the IGBT housing 413 to the buffer space 418 through the internal communication channel 416.

[0365] An internal communication groove 416 is formed in the inner wall portion 414. Specifically, the internal communication groove 416 is formed by recessing a predetermined distance from the side of the inner wall portion 414 facing the cooling plate 430.

[0366] As described above, if the explosion-proof frame portion 400 is engaged, the side of the inner wall portion 414 facing the cooling plate 430 will contact the cooling plate 430. Therefore, the IGBT receiving portion 413 can communicate with the buffer space portion 418 only through the internal connecting groove 416.

[0367] In the illustrated embodiment, the internal connecting groove 416 is formed as a groove with a quadrilateral cross-section extending in the vertical direction, but its shape can be changed.

[0368] The internal communication channels 416 can be formed in a plurality of ways. The plurality of internal communication channels 416 are formed at a predetermined distance from each other. In the illustrated embodiment, three internal communication channels 416 are formed in each inner wall portion 414 and are arranged at a predetermined distance from each other.

[0369] In one embodiment, the specified distance may be equal to the extension length of the outer connecting slot 417. Additionally, the number of inner connecting slots 416 may be varied.

[0370] The internal connecting slot 416 and the external connecting slot 417 are staggered. That is, the virtual surfaces extending from the internal connecting slot 416 and the external connecting slot 417 do not overlap. As a result, the electric arc generated by the explosion of the IGBT 440 or the debris generated during the explosion will not be discharged to the outside.

[0371] In addition, with the above configuration, the generated gas will not pass through the internal connecting channel 416 and the external connecting channel 417 at the same time.

[0372] The internal communication slot 416 includes a first internal communication slot 416a and a second internal communication slot 416b.

[0373] A first internal communication groove 416a is formed on a first inner wall portion 414a. In the illustrated embodiment, the first inner wall portion 414a is formed to surround the first IGBT receiving portion 413a on the front and rear sides. Thus, the first internal communication groove 416a is also formed on the front and rear sides of the first IGBT receiving portion 413a, respectively.

[0374] A second internal communication groove 416b is formed on the second inner wall portion 414b. In the illustrated embodiment, the second inner wall portion 414b is formed to surround the second IGBT receiving portion 413b on the front and rear sides. Thus, the second internal communication groove 416b is also formed on the front and rear sides of the second IGBT receiving portion 413b, respectively.

[0375] The external communication channel 417 connects the buffer space 418 and the external space. Gas generated by the explosion of the IGBT 440 can flow from the buffer space 418 to the external space through the external communication channel 417.

[0376] An external communication groove 417 is formed in the outer wall portion 415. Specifically, the external communication groove 417 is formed by recessing a predetermined distance from the side of the outer wall portion 415 facing the cooling plate 430.

[0377] As described above, if the explosion-proof frame portion 400 is attached, the side of the outer wall portion 415 facing the cooling plate 430 will contact the cooling plate 430. Therefore, the buffer space portion 418 can communicate with the external space only through the external communication slot 417.

[0378] In the illustrated embodiment, the external connecting groove 417 is formed as a groove with a quadrilateral cross-section extending in the vertical direction, but its shape can be changed.

[0379] The external communication channels 417 can be formed in multiples. The multiple external communication channels 417 are formed at a predetermined distance from each other. In the illustrated embodiment, four external communication channels 417 are formed in each outer wall portion 415 and are arranged at a predetermined distance from each other.

[0380] In one embodiment, the specified distance may be equal to the extension length of the internal connecting slot 416. Additionally, the number of external connecting slots 417 may be varied.

[0381] The external connecting slot 417 and the internal connecting slot 416 are staggered. That is, the virtual surfaces extending from the external connecting slot 417 and the internal connecting slot 416 do not overlap each other. As a result, the electric arc generated by the explosion of the IGBT 440 or the debris generated during the explosion will not be discharged to the outside.

[0382] In addition, with the above configuration, the generated gas will not pass through the internal connecting channel 416 and the external connecting channel 417 at the same time.

[0383] The external communication slot 417 includes a first external communication slot 417a and a second external communication slot 417b.

[0384] A first external communication groove 417a is formed on a first outer wall portion 415a. In the illustrated embodiment, the first outer wall portion 415a is formed to surround the first inner wall portion 414a and the first buffer space portion 418a on the front and rear sides, respectively. Thus, the first external communication groove 417a is also formed on the front and rear sides of the first buffer space portion 418a, respectively.

[0385] The second external communication groove 417b is formed on the second outer wall portion 415b. In the illustrated embodiment, the second outer wall portion 415b is formed to surround the second inner wall portion 414b and the second buffer space portion 418b on the front and rear sides, respectively. Thus, the second external communication groove 417b is also formed on the front and rear sides of the first buffer space portion 418b, respectively.

[0386] The buffer space 418 is a space to contain the electric arc and debris generated during the explosion of the IGBT 440. Therefore, the electric arc and debris will not be discharged into the external space through the external communication channel 417.

[0387] Additionally, the buffer space 418 is a space where gas flowing into the IGBT housing 413 is held before being discharged to the outside. Therefore, the gas can be discharged after the temperature and pressure decrease.

[0388] The buffer space 418 is formed by the inner wall portion 414 and the outer wall portion 415 being spaced apart by a predetermined distance. The buffer space 418 is located between the inner wall portion 414 and the outer wall portion 415. The buffer space 418 is formed by recessing a predetermined distance from the side of the outer casing unit 410 facing the cooling plate 430.

[0389] In the illustrated embodiment, the inner wall portion 414 and the outer wall portion 415 are formed on the front and rear sides of the IGBT receiving portion 413, respectively. Consequently, the buffer space portion 418 is also formed on the front and rear sides of the IGBT receiving portion 413, respectively.

[0390] The front and rear sides of the buffer space 418 are surrounded by the inner wall 414 and the outer wall 415. In addition, the upper and lower sides of the buffer space 418 are surrounded by fastening member joints.

[0391] As described above, when the explosion-proof frame portion 400 is engaged, the inner wall portion 414 and the outer wall portion 415 each have one side facing the cooling plate 430 in contact with the cooling plate 430. Additionally, the side of each of the fastening member engagement portions facing the cooling plate 430 also contacts the cooling plate 430.

[0392] Therefore, except for the internal communication slot 416 and the external communication slot 417, the communication between the buffer space 418 and the outside is blocked.

[0393] That is, the buffer space 418 is surrounded by the outer shell unit 410, the partition wall 413c, the inner wall 414, the outer wall 415, and the cooling plate 430.

[0394] The buffer space 418 is connected to the IGBT housing 413. This connection is achieved via an internal connecting groove 416. The buffer space 418 is also connected to an external space. This connection is achieved via an external connecting groove 417.

[0395] Therefore, the temperature and pressure of the gas generated from the IGBT housing 413 can be discharged to the external space after the buffer space 418 is reduced.

[0396] The buffer space 418 includes a first buffer space 418a and a second buffer space 418b.

[0397] The first buffer space 418a is formed between the first inner wall portion 414a and the first outer wall portion 415a. The first buffer space 418a is formed on the front side and the rear side of the first inner wall portion 414a, respectively.

[0398] The second buffer space 418b is formed between the second inner wall portion 414b and the second outer wall portion 415b. The second buffer space 418b is formed on the front side and the rear side of the second inner wall portion 414b, respectively.

[0399] The corner portion 419 is configured to partially surround the IGBT housing portion 413.

[0400] Specifically, the upper corner portion 419, formed on the side facing the protrusion 411, surrounds the upper side of the first IGBT receiving portion 413a. In addition, the lower corner portion 419, formed on the side away from the protrusion 411 (i.e., the side opposite to the protrusion 411), surrounds the lower side of the second IGBT receiving portion 413b.

[0401] The corner portion 419 protrudes from the side of the outer casing unit 410 facing the cooling plate 430.

[0402] If the housing unit 410 is combined with the cooling plate 430, the side of the corner portion 419 facing the cooling plate 430 will contact the cooling plate 430. Thus, except for the internal communication groove 416 mentioned above, the IGBT housing portion 413 can be sealed.

[0403] A plurality of grooves with a predetermined distance between them can be formed at the corner portion 419. The overall weight of the housing unit 410 can be reduced by the action of these grooves. Furthermore, the rigidity of the housing unit 410 can be enhanced by the action of these grooves.

[0404] A plurality of fastening holes are formed through the corner portion 419. Fastening members (not shown) can be inserted through these fastening holes. Therefore, each housing unit 410 and the cooling plate 430 can be fastened.

[0405] The energized bus 420 transmits the current supplied to the valve assembly 200 to the capacitor assembly 100. Additionally, the energized bus 420 can be electrically connected to the printed circuit board 280 and the IGBT 440.

[0406] The energized bus 420 is energizedly connected to the input bus 230. Electrical energy transferred to the input bus 230 can be transferred to the energized bus 420.

[0407] The energized bus 420 and the output bus 250 are energized and connected. Electrical energy transmitted to the energized bus 420 is transmitted to the output bus 250.

[0408] The energized bus 420 is electrically connected to both the printed circuit board 280 and the IGBT 440. Control signals processed in the printed circuit board 280 or the IGBT 440 can be transmitted to other structural elements.

[0409] The energized bus 420 can be integrated into the housing unit 410 to cover the IGBT housing 413 together with the output bus 250. The energized bus 420 and the output bus 250 are electrically connected.

[0410] In the illustrated embodiment, the energized bus 420 is located in front of the output bus 250. Thus, the energized bus 420 is configured to cover the front of the IGBT housing 413.

[0411] The energized busbar 420 includes a first energized busbar 421 and a second energized busbar 422.

[0412] The first energized bus 421 is located above the second energized bus 422 and is energizedly connected to the first input bus 231 and the output bus 250. The second energized bus 422 is located below the first energized bus 421 and is energizedly connected to the second input bus 232 and the output bus 250.

[0413] In the illustrated embodiment, the energized busbar 420 is located between the housing unit 410 and the insulating housing 260.

[0414] The energized busbar 420 extends in one direction, namely the front-to-back direction in the illustrated embodiment. The two ends of the energized busbar 420 in this direction, namely the front end and the rear end, are bent towards the housing unit 410 at a predetermined angle. In one embodiment, the predetermined angle may be a right angle.

[0415] Therefore, if the energized bus 420 is combined with the housing unit 410, the energized bus 420 surrounds the front, left or right and rear sides of the housing unit 410.

[0416] The energized busbar 420 can be formed of a material capable of conducting electricity. Alternatively, the energized busbar 420 can be formed of a material with high rigidity. In one embodiment, the energized busbar 420 can be formed of a material including iron.

[0417] Therefore, in the event of an explosion of the IGBT 440 housed in the IGBT housing 413, the damage or deformation of the housing unit 410 can be minimized by the energized busbar 420 surrounding the housing unit 410.

[0418] In one embodiment, the housing unit 410, the energized busbar 420, the cooling plate 430, and the insulating housing 260 may be threaded together.

[0419] The cooling plate 430 is configured to cool the heat generated during the operation of the IGBT 440. That is, the cooling plate 430 exchanges heat with the IGBT 440 to cool the IGBT 440.

[0420] In the illustrated embodiment, the cooling plate 430 has a quadrilateral plate shape extending in the vertical direction. The shape of the cooling plate 430 can be any shape capable of heat exchange with the IGBT 440.

[0421] Cooling plate 430 is located between the two housing units 410. In addition, cooling plate 430 is located between the IGBTs 440 housed in each housing unit 410.

[0422] In other words, when viewed from the front, the housing unit 410, IGBT 440, cooling plate 430, IGBT 440 and housing unit 410 are arranged sequentially in the direction to the left or right or the opposite direction.

[0423] The cooling plate 430 contacts the IGBTs 440 located on the left and right sides, respectively. In one embodiment, the cooling plate 430 may contact the surfaces of each IGBT 440.

[0424] The cooling plate 430 is connected to the outside. Specifically, the cooling plate 430 is connected to the cooling flow path 900, which will be described later.

[0425] Furthermore, a defined space is formed inside the cooling plate 430. Cooling fluid supplied from the outside circulates within this space and can receive heat from the IGBT 440. The cooled fluid that has received heat can then be discharged back to the outside.

[0426] The cooling plate 430 includes an inlet 431 and an outlet 432.

[0427] The inlet 431 is connected to the valve inlet pipe 951 of the cooling flow path section 900. Low-temperature cooling fluid can flow into the internal space of the cooling plate 430 through the inlet 431.

[0428] Outlet 432 is connected to valve outlet piping 952 of cooling flow path 900. Cooling fluid that exchanges heat with IGBT 440 can be discharged from the internal space of cooling plate 430 through outlet 432.

[0429] In the illustrated embodiment, an inlet 431 and an outlet 432 are formed through the upper side of the cooling plate 430. Furthermore, the inlet 431 is located behind the outlet 432. These positions can be changed.

[0430] The IGBT 440 controls the current flowing into or out of submodule 10. In one embodiment, the IGBT 440 can function as a switching element.

[0431] The IGBT 440 is housed in the IGBT housing 413. The IGBT 440 housed in the IGBT housing 413 is sealed by the partition wall 413c, the inner wall 414, the corner portion 419 and the cooling plate 430.

[0432] The IGBT 440 can contact the cooling plate 430. Specifically, the opposing surfaces of the cooling plate 430 and the IGBT 440 can contact each other. Thus, the heat generated in the IGBT 440 is transferred to the cooling plate 430, thereby cooling the IGBT 440.

[0433] The IGBT 440 is energized and connected to the energized bus 420. Electrical power for operating the IGBT 440 can be transferred through the energized bus 420.

[0434] The IGBT 440 can be electrically connected to the printed circuit board 280. Control signals processed in the printed circuit board 280 can be transmitted to capacitor elements (not shown), etc., through the IGBT 440.

[0435] Additionally, the IGBT 440 can enable or disable power flow between the printed circuit board 280 and devices such as capacitor elements (not shown) via switching actions.

[0436] There may be a plurality of IGBTs 440. In the illustrated embodiment, the IGBT 440 includes: a first IGBT 440 disposed on the upper side in the direction toward the protrusion 411; and a second IGBT 440 disposed on the lower side in the direction away from the protrusion 411 (i.e., the direction opposite to the first IGBT 440 and the protrusion 411).

[0437] As described above, there can be two housing units 410. Thus, in the illustrated embodiment, the IGBT 440 has two housing units 410 on each of the left and right sides, for a total of four.

[0438] As described above, a buffer space 418 is formed in the housing unit 410. During the explosion of the IGBT 440, the electric arc, gas, and debris generated enter the buffer space 418 through the internal communication groove 416.

[0439] Therefore, the high-temperature and high-pressure electric arc and gas can be discharged into the external space after the temperature and pressure drop.

[0440] The external communication slot 417, which connects the buffer space 418 to the external space, and the internal communication slot 416 are arranged in a staggered manner.

[0441] Therefore, the path from the IGBT housing 413 through the internal connecting groove 416, the buffer space 418, and the external connecting groove 417 toward the external space becomes longer. As a result, the high-temperature and high-pressure electric arc and gas will not be directly discharged into the external space after the explosion.

[0442] Furthermore, debris and other debris passing through the internal communication channel 416 are blocked by the outer wall 415 surrounding the buffer space 418. This minimizes the amount of debris discharged into the external space of the explosion-proof frame 400 after an explosion.

[0443] 6. Description of the track assembly 500 according to an embodiment of the present invention

[0444] Submodule 10 of this embodiment of the invention includes a track assembly 500. The track assembly 500 slidably supports the valve assembly 200 and the capacitor assembly 100.

[0445] In addition, the track assembly 500 in this embodiment of the invention is configured to prevent the valve assembly 200 and the capacitor assembly 100 from arbitrarily disengaging.

[0446] like Figure 19As shown, the track unit 540 of the track assembly 500 is attached to the support portion 23. Therefore, the track unit 540 can also be considered as part of the frame 20.

[0447] The following is for reference Figures 13 to 16 The track assembly 500 of this embodiment of the invention is described in detail.

[0448] In the illustrated embodiment, the track assembly 500 includes: a trolley unit 510, a support unit 520, a fastening unit 530, and a track unit 540.

[0449] The trolley unit 510 supports the capacitor assembly 100 and the valve assembly 200 in a slidable manner. The trolley unit 510 supports the capacitor assembly 100 and the valve assembly 200 on its lower side.

[0450] The capacitor assembly 100 and the valve assembly 200 can slide forward or backward together with the trolley unit 510 while they are mounted on the trolley unit 510.

[0451] The capacitor assembly 100 and valve assembly 200 can be coupled to the trolley unit 510 via the bracket unit 520 and additional fastening members (not shown). In one embodiment, the capacitor assembly 100 and valve assembly 200 can be threaded onto the bracket unit 520.

[0452] There may be a plurality of trolley units 510. A trolley unit 510 in which a capacitor assembly 100 is housed can be referred to as a capacitor trolley unit 510a. In addition, a trolley unit 510 in which a valve assembly 200 is housed can be referred to as a valve trolley unit 510b.

[0453] The capacitor trolley unit 510a and the valve trolley unit 510b have similar overall structure and function. Therefore, in the following description, the capacitor trolley unit 510a and the valve trolley unit 510b will be collectively referred to as trolley unit 510.

[0454] The trolley unit 510 is slidably coupled to the track unit 540. The trolley unit 510 can slide along the track unit 540 to the forward or rearward side.

[0455] The trolley unit 510 extends along the direction in which the capacitor assembly 100 and the valve assembly 200 are connected, i.e., the front-to-back direction in the illustrated embodiment.

[0456] The extension length of capacitor trolley unit 510a can be determined based on the longitudinal length of capacitor assembly 100. Similarly, the extension length of valve trolley unit 510b can be determined based on the longitudinal length of valve assembly 200. Therefore, the extension lengths of capacitor trolley unit 510a and valve trolley unit 510b can be different from each other.

[0457] The trolley unit 510 includes: a trolley body 511, an extension 512, an arc-shaped part 513, and a wheel part 514.

[0458] The main body 511 of the trolley forms the main body of the trolley unit 510. The trolley unit 510 is formed by extending a predetermined length in the front-to-back direction. In addition, the trolley unit 510 is formed by extending with a predetermined width in the left-to-right direction.

[0459] In the illustrated embodiment, the trolley body 511 has a quadrilateral plate shape extending in the front-rear direction. The shape of the trolley body 511 can be any shape capable of supporting the capacitor assembly 100 or the valve assembly 200.

[0460] like Figure 13 As shown, an elastic member joint 511a is provided on the right side of the trolley main body 511. The elastic member joint 511a is formed to protrude from the lower side of the trolley main body 511 by a predetermined distance.

[0461] The trolley connection portion 631 of the elastic member 630, to which the anti-detachment portion 600 is attached, is located at the elastic member engagement portion 511a. In one embodiment, the elastic member engagement portion 511a may be a screw member.

[0462] An extension 512 is provided on the lower side of the trolley body 511 facing the track unit 540, i.e., in the illustrated embodiment.

[0463] The extension 512 is configured to maintain the distance between the track unit 540 and the trolley main body 511. In addition, the arc-shaped portion 513 attached to the track unit 540 protrudes from the extension 512.

[0464] An extension 512 is formed by protruding a predetermined distance from the side of the trolley main body 511 toward the track unit 540. The extension 512 extends along the length direction of the trolley main body 511, i.e., the front-to-back direction in the illustrated embodiment. The extension 512 may extend to the same length as the trolley main body 511.

[0465] There are a plurality of extensions 512. In the illustrated embodiment, the extensions 512 are respectively provided on the left and right sides. Each extension 512 is arranged at a predetermined distance from each other. The predetermined distance may be longer than the distance between the ends of the track bends 542 of the track unit 540.

[0466] An arc-shaped portion 513 protrudes from the extension portion 512. In addition, the wheel portion 514 is rotatably connected to the extension portion 512.

[0467] The arc-shaped portion 513 is the part where the trolley unit 510 and the track unit 540 are joined. Specifically, the arc-shaped portion 513 is inserted into the space surrounded by the track bend 542 of the track unit 540. Under the action of the arc-shaped portion 513, the trolley unit 510 and the track unit 540 will not separate arbitrarily.

[0468] The arc-shaped portion 513 is formed by protruding a predetermined distance from the lower end of the extension portion 512 on the side facing the track unit 540, i.e., the illustrated embodiment. The arc-shaped portion 513 is formed by protruding a predetermined distance inward, i.e., in the illustrated embodiment, in the direction opposite to the track curvature portion 542. In other words, the arc-shaped portion 513 is formed by protruding a predetermined distance in the direction away from the wheel portion 514 (i.e., in the opposite direction to the wheel portion 514).

[0469] The arc-shaped portion 513 is formed to have a circular cross-section as a whole. That is, except for the part where the arc-shaped portion 513 connects with the extension portion 512, the outer surface of the arc-shaped portion 513 is formed in an arc-shaped manner toward the track bending portion 542.

[0470] The arc-shaped portion 513 can be formed in a plurality of units. In the illustrated embodiment, the arc-shaped portions 513 are respectively provided on the left and right sides. Each arc-shaped portion 513 protrudes from each extension portion 512 toward the track bend portion 542 in an arcuate manner.

[0471] The side of the arc-shaped portion 513 facing the track bend 542 in the horizontal direction can contact the third track bend 542c of the track bend 524. The distance between each side of each arc-shaped portion 513 can be longer than the length between the ends of each track bend 542.

[0472] The arc-shaped portion 513 extends along the length direction of the trolley main body portion 511, i.e., the front-to-back direction in the illustrated embodiment. The arc-shaped portion 513 may extend to the same length as the trolley main body portion 511 and the extension portion 512.

[0473] A trolley hollow portion 513a is formed inside the arc-shaped portion 513. The trolley hollow portion 513a is formed through the arc-shaped portion 513 along its length. The blocking fastening member 641 of the anti-detachment portion 600, described later, is inserted and fastened to the trolley hollow portion 513a.

[0474] The wheel 514 rotates as the trolley unit 510 moves, so that the trolley unit 510 slides along the track unit 540.

[0475] The wheel portion 514 is rotatably coupled to the extension portion 512. The extension portion 512 can remain stationary regardless of the rotation of the wheel portion 514. For this coupling, a bearing member (not shown) may be provided.

[0476] There may be a plurality of wheels 514. In the illustrated embodiment, two wheels 514 are located on the left and right sides, spaced apart from each other by a predetermined distance.

[0477] In addition, a plurality of wheels 514 may be provided in the left and right directions at the lower end of the trolley unit 510.

[0478] Refer again Figure 2 and Figure 4 The capacitor trolley unit 510a has three wheels 514 spaced apart from each other in the front-back direction in the left-right direction. The valve trolley unit 510b has two wheels 514 spaced apart from each other in the front-back direction in the left-right direction.

[0479] The number of wheels 514 provided in capacitor trolley unit 510a and valve trolley unit 510b can be changed.

[0480] In the illustrated embodiment, the wheel portion 514 is a shape consisting of a plurality of cylinders with different diameters continuously joined together. Furthermore, a hollow portion is formed through the interior of the wheel portion 514. The wheel fastening member 532 can be connected through this hollow portion.

[0481] The wheel part 514 includes: wheel body part 514a, disc part 514b and trolley joint part 514c.

[0482] The wheel body portion 514a forms the main body of the wheel portion 514. The outer peripheral surface of the wheel body portion 514a is mounted on the support portion 545 of the track unit 540. The rotation of the wheel portion 514 is achieved by the relative rotation between the wheel body portion 514a and the support portion 545.

[0483] In the illustrated embodiment, the wheel body portion 514a is a cylindrical shape with a circular cross-section and a predetermined height. The height of the wheel body portion 514a, i.e., its length in the left-right direction, is preferably longer than the width of the support portion 545, i.e., its length in the left-right direction.

[0484] That is, if the wheel body portion 514a is placed on the support portion 545, a portion of the outer side of the wheel body portion 514a, that is, in the direction away from the extension portion 512 (i.e., in the opposite direction to the extension portion 512), can be exposed to the outside of the track unit 540.

[0485] Thus, the wheel 514 can be stably mounted on the track unit 540.

[0486] The wheel fastening member 532 passes through and is attached to the outer side of the wheel body portion 514a, that is, the side in the direction away from the extension portion 512 (i.e., the direction opposite to the extension portion 512). Thus, the wheel portion 514 can be attached to the extension portion 512.

[0487] In the illustrated embodiment, a rotary bearing member 620 is provided on one side of the wheel body portion 514a located on the right side. The rotary bearing member 620 can rotate the stop member 610, which will be described later, regardless of the rotation of the wheel portion 514. This will be explained in detail later.

[0488] A disc portion 514b is formed on the inner side of the wheel body portion 514a, i.e. on the side facing the extension portion 512. The disc portion 514b is formed by protruding a predetermined length from the wheel body portion 514a toward the extension portion 512.

[0489] The disc portion 514b is a disc shape with a circular cross-section and a predetermined height. The disc portion 514b is formed to have a diameter larger than that of the wheel body portion 514a. The disc portion 514b can be accommodated in the guide space portion 544a, which is located lower than the upper end of the support portion 545.

[0490] The disc portion 514b is formed to have a predetermined thickness in the width direction of the stepped portion 544, i.e., between the track extension portion 543 and the support portion 545. The thickness of the disc portion 514b can be formed to be smaller than the width of the stepped portion 544, i.e., the distance between the opposing surfaces of the track extension portion 543 and the support portion 545.

[0491] Therefore, the left-right movement of the wheel portion 514, i.e., the direction away from the extension portion 512 (i.e., the direction opposite to the extension portion 512), can be restricted by the contact between the disc portion 514b and the support portion 545. Thus, the wheel portion 514 will not disengage from the track unit 540 in the direction away from the extension portion 512 (i.e., the direction opposite to the extension portion 512).

[0492] The outer peripheral surface of the disc portion 514b can be separated from the upper end of the stepped portion 544 by a specified distance.

[0493] A trolley joint 514c is formed on the inner side of the disc portion 514b, i.e. on the side facing the extension portion 512. The trolley joint 514c is formed by protruding a predetermined length from the disc portion 514b toward the extension portion 512.

[0494] The trolley joint 514c is a disc shape with a circular cross-section and a specified height. The trolley joint 514c is formed to have a diameter smaller than that of the wheel body 514a. The side of the trolley joint 514c facing the extension 512 can contact the extension 512.

[0495] The bracket unit 520 connects the capacitor assembly 100 and the valve assembly 200 to the trolley unit 510. The bracket unit 520 is attached to the upper side of the trolley body 511. Specifically, a bracket connection portion extending along the length direction of the trolley body 511 is formed in the center recess in the left-right direction on the upper side of the trolley body 511.

[0496] The bracket unit 520 is connected to the trolley body 511 via the bracket coupling. The coupling can be a threaded connection or the like.

[0497] The support unit 520 includes a horizontal portion 521 and a vertical portion 522. The horizontal portion 521 is formed at a predetermined angle to the trolley body portion 511 and extends along the length direction of the trolley body portion 511. In one embodiment, the horizontal portion 521 may be parallel to the trolley body portion 511.

[0498] The vertical portion 522 and the horizontal portion 521 form a predetermined angle, and the vertical portion 522 protrudes from the horizontal portion 521. In one embodiment, the predetermined angle may be a right angle.

[0499] A plurality of through holes are formed in the vertical portion 522 (see reference). Figure 11 A fastening member (not shown) for securing the housing unit 410 is inserted into the through hole. Thus, the valve assembly 200 can be attached to the valve trolley unit 510b.

[0500] Although not shown, a fastening member (not shown) may be provided for securing the capacitor housing 110 of the capacitor assembly 100 to the vertical portion 522. Thus, the capacitor assembly 100 can be integrated into the capacitor trolley unit 510a.

[0501] The fastening unit 530 fastens the various structural elements of the trolley unit 510 to the trolley body 511. In one embodiment, the fastening unit 530 may be a screw component.

[0502] The fastening unit 530 includes a lever fastening member 531 and a wheel fastening member 532.

[0503] The lever fastening member 531 fastens the lever connecting member 720 of the mounting separation part 700 to the trolley body part 511. In the illustrated embodiment, the lever fastening member 531 fastens the lever connecting member 720 located on the front side of the trolley body part 511.

[0504] There may be a plurality of lever fastening members 531. The lever fastening members 531 may be arranged at a predetermined distance from each other along the width direction of the lever connecting member 720, i.e., the left-right direction.

[0505] The wheel fastening member 532 rotatably fastens the wheel portion 514 to the extension portion 512. In the illustrated embodiment, the wheel fastening member 532 is inserted into the wheel portion 514 from the outer side of the wheel portion 514, i.e., from the direction away from the extension portion 512 (i.e., the direction opposite to the extension portion 512), toward the extension portion 512. The inner side of the wheel fastening member 532, i.e., the end facing the extension portion 512, can be rotatably fastened to the extension portion 512.

[0506] There may be a plurality of wheel fastening members 532. As described above, this is because there are a plurality of wheel portions 514.

[0507] The track unit 540 is configured to guide the trolley unit 510 in the forward and backward direction. The trolley unit 510 is slidably coupled to the track unit 540.

[0508] The track unit 540 extends in one direction, namely the front-to-back direction in the illustrated embodiment. This may correspond to the extension direction of the trolley unit 510.

[0509] The track unit 540 is preferably formed of a material with sufficient rigidity to support the heavy capacitor assembly 100 and valve assembly 200.

[0510] There can be a plurality of orbital units 540. (See again...) Figure 1 The track units 540 are six on the support 23. The plurality of track units 540 are arranged at predetermined distances from each other in the left-right direction. The number of track units 540 can be changed.

[0511] Intercepting plates 640 of anti-detachment parts 600 can be attached to both ends of the track unit 540 along its length. The anti-detachment parts 600 can restrict the movement of the front and rear sides of the trolley unit 510 attached to the track unit 540. This prevents the trolley unit 510 from detaching from the track unit 540 and falling off.

[0512] In the illustrated embodiment, the track unit 540 includes: a track body portion 541, a track bend portion 542, a track extension portion 543, a step portion 544, and a support portion 545.

[0513] The track body 541 forms the main body of the track unit 540. The track body 541 and the trolley body 511 are arranged facing each other.

[0514] The track body 541 can be configured to form a predetermined angle with the trolley body 511. In one embodiment, the track body 541 can be configured parallel to the trolley body 511.

[0515] The track body 541 extends in one direction, namely the front-to-back direction in the illustrated embodiment. The extension length of the track body 541 is preferably longer than the sum of the extension lengths of the capacitor trolley unit 510a and the valve trolley unit 510b.

[0516] A lever insertion groove 730 is formed in the front side recess on one side of the track body 541, i.e., in the embodiment shown in the figure.

[0517] The track bend 542 protrudes from the outer side of the track body 541, i.e., from each end in the left and right directions in the illustrated embodiment, toward the trolley body 511.

[0518] The track bend 542 is a portion that is slidably connected to the arcuate portion 513. The track bend 542 is formed such that it partially covers the upper side of the arcuate portion 513 facing the trolley body 511. Therefore, the arcuate portion 513 connected to the track bend 542 will not detach in the upward direction.

[0519] That is, due to the shape of the curved portion 542 and the arc-shaped portion 513 of the track, the trolley unit 510 needs to slide from the front side or the rear side to engage with the track unit 540. Similarly, due to the shape of the curved portion 542 and the arc-shaped portion 513 of the track, the trolley unit 510 and the track unit 540 will not separate arbitrarily.

[0520] The track bend 542 extends in one direction, namely the front-to-back direction in the illustrated embodiment. The extension length of the track bend 542 may be the same as the extension length of the track body 541.

[0521] The track bends 542 can be formed in multiples. The multiple track bends 542 are arranged at a predetermined distance from each other. Each track bend 542 is arranged adjacent to each arcuate portion 513.

[0522] Each track bend 542 is located inside each arc-shaped portion 513, i.e., in the illustrated embodiment, toward the center portion of the track body portion 541 where the lever insertion groove 730 is formed.

[0523] Each track bend 542 protrudes in a direction facing each other. In other words, each track bend 542 is formed in an arcuate manner in a direction away from the arcuate portion 513 (i.e., in the opposite direction to the arcuate portion 513). In one embodiment, the track bend 542 may have a "C" shape in which its cross-section protrudes inwards towards each other.

[0524] It should be understood that the shape of the curved portion 542 corresponds to the shape of the arc portion 513.

[0525] Thus, the curved section 542 is formed to surround the lower side, the inner side (i.e., each side of the curved section 513 facing each other) and the upper side of the arcuate section 513.

[0526] The track bending portion 542 includes: a first track bending portion 542a, a second track bending portion 542b, a third track bending portion 542c, a side limiting portion 542d, and an upper surface limiting portion 542e.

[0527] The first track bend 542a protrudes from one end of the track body 541 toward the trolley body 511. Specifically, the first track bend 542a protrudes from the end where the track body 541 and the track extension 543 connect.

[0528] The first track bend 542a is formed to protrude toward the other first track bends 542a. In other words, the first track bend 542a is formed in an arcuate manner in a direction away from the arcuate portion 513 (i.e., in the opposite direction to the arcuate portion 513).

[0529] The second track bend 524b protrudes from the upper end of the first track bend 542a on the side facing the trolley body 511, i.e., the upper end in the illustrated embodiment.

[0530] The second track bend 542b protrudes outward from the other second track bends 542b. In other words, the second track bend 542b is formed in an arcuate manner in a direction away from the arcuate portion 513 (i.e., in the opposite direction to the arcuate portion 513). The degree of curvature of the second track bend 542b can be determined based on the degree of curvature of the first track bend 542a. In one embodiment, the second track bend 542b may be bent with the same curvature as the first track bend 542a.

[0531] The third track bend 542c protrudes from the upper end of the second track bend 542b on the side facing the trolley body 511, i.e., the illustrated embodiment.

[0532] The third track bend 542c protrudes toward the trolley body 511. In other words, the third track bend 542c is formed in an arc-shaped manner in a direction away from the arc-shaped portion 513 (i.e., in the opposite direction to the arc-shaped portion 513).

[0533] In one embodiment, the third track bend 542c may protrude toward the central portion of the trolley body 511 in the left-right direction. In the above embodiment, the third track bend 542c protrudes toward the upper inner direction (i.e., the direction in which different track bends 542 face each other).

[0534] The third track bend 542c can be formed to partially cover the upper side of the arcuate portion 513. In one embodiment, the third track bend 542c can extend toward the extension portion 512. That is, the end of the third track bend 542c is located between the arcuate portion 513 and the trolley body portion 511.

[0535] A side limiting portion 542d is formed protruding outward in the direction of the second track curvature portion 542b, i.e., in the direction of the arc-shaped portion 513.

[0536] The side limiting portion 542d is formed in an arcuate manner in the outward direction, i.e., towards the arcuate portion 513 in the illustrated embodiment. That is, the side limiting portion 542d protrudes in the opposite direction to the first curved portion 542a or the second track curved portion 542b.

[0537] The side limiting portion 542d includes: a first portion extending toward the arcuate portion 513; a second portion continuous with the first portion and in contact with or separate from the arcuate portion 513, forming a predetermined angle with the surface of the arcuate portion 513 and extending therein; and a third portion continuous with the second portion and extending away from the arcuate portion 513 (i.e., in the opposite direction to the arcuate portion 513).

[0538] In one embodiment, the second portion of the side limiting portion 542d may extend parallel to one side of the arcuate portion 513 toward the track curvature portion 542.

[0539] In another embodiment, the second portion of the side limiting portion 542d, i.e., the side of the side limiting portion 542d facing the arcuate portion 513, may be formed recessed in a direction away from the arcuate portion 513 (i.e., in the opposite direction to the arcuate portion 513). Additionally, the arcuate portion 513 may be formed protruding toward the second portion of the side limiting portion 542d.

[0540] That is, the second part of the side limiting part 542d can be formed in the same direction as the arcuate part 513 in an arcuate manner.

[0541] The second portion of the side limiting portion 542d can contact one side of the arc-shaped portion 513 facing the track curvature portion 542. This limits the distance the wheel portion 514 can move towards the track curvature portion 542.

[0542] The upper surface limiting portion 542e protrudes outward from the outer direction of the third track bending portion 542c, i.e., towards the arc-shaped portion 513. The upper surface limiting portion 542e is formed in an arc-shaped manner in the outward direction.

[0543] That is, the upper surface limiting portion 542e is formed in a direction different from that of the third track bending portion 542c.

[0544] In one embodiment, the side of the upper surface limiting portion 542e facing the arcuate portion 513 may be recessed in a direction away from the arcuate portion 513 (i.e., in the opposite direction to the arcuate portion 513). Alternatively, the arcuate portion 513 may be formed protruding toward the said side of the upper surface limiting portion 542e.

[0545] That is, one side of the upper surface limiting portion 542e can be formed in an arcuate manner along the same direction as the arcuate portion 513.

[0546] The upper surface limiting portion 542e can contact or separate from the side of the extension portion 512 or the arc-shaped portion 513 facing the track bend portion 542. This limits the distance the wheel portion 514 can move upwards from the track unit 540.

[0547] The track extension 543 extends from both horizontal ends of each track body 541, i.e., the left or right end in the illustrated embodiment. The track extension 543 extends at a predetermined angle to the track body 541. In one embodiment, the track extension 543 may extend parallel to the track body 541.

[0548] The track extension 543 can extend such that its outer end, in the direction away from the track body 541 (i.e., in the opposite direction to the track body 541), is located directly below the extension 512. That is, the outer end of the track extension 543 can be located further outward than the end of the third track bend 542c.

[0549] The track extension 543 is formed to have a specified thickness. Preferably, the upper side of the track extension 543, i.e., the side facing the arcuate portion 513, does not contact the arcuate portion 513. This is to prevent damage to the track extension 543 due to movement of the trolley unit 510.

[0550] A fastening hole 543a is formed through the interior of the track extension 543. The fastening hole 543a is formed through the track unit 540 in one direction, namely the front-to-back direction in the illustrated embodiment.

[0551] A blocking fastening member 641 of the anti-disengagement portion 600 is fastened in the fastening hole 543a. In one embodiment, the blocking fastening member 641 may be threaded into the fastening hole 543a.

[0552] The step portion 544 extends from the outer end of the track extension portion 543, i.e., from the end in the direction away from the track body portion 541 (i.e., the direction opposite to the track body portion 541). The step portion 544 extends at a predetermined angle to the track extension portion 543. In one embodiment, the step portion 544 may extend parallel to the track extension portion 543.

[0553] The step portion 544 may extend to be located directly below the disc portion 514b of the wheel portion 514. The side of the step portion 544 facing the disc portion 514b, i.e., the upper side in the illustrated embodiment, is spaced apart from the outer peripheral surface of the disc portion 514b by a predetermined distance.

[0554] That is, when the wheel 514 rotates, the upper side of the stepped portion 544 does not contact the disc portion 514b. Therefore, even if the wheel 514 rotates, the stepped portion 544 will not be damaged.

[0555] The outer end of the stepped portion 544, that is, the end in the direction away from the track extension 543 (i.e., the direction opposite to the track extension 543), can be extended to be located below the wheel body portion 514a. That is, the end of the stepped portion 544 is located further outward than the disc portion 514b, that is, further away from the track extension 543 (i.e., more opposite to the track extension 543).

[0556] The step portion 544 is formed to be lower than the height of the track extension portion 543. That is, the shortest distance between the upper side of the step portion 544 and the trolley body portion 511 is longer than the shortest distance between the upper side of the track extension portion 543 and the trolley body portion 511.

[0557] In other words, the shortest distance between the capacitor assembly 100 or valve assembly 200 and the upper side of the step portion 544 is longer than the shortest distance between the capacitor assembly 100 or valve assembly 200 and the upper side of the track extension portion 543.

[0558] Furthermore, the step portion 544 is formed to be lower than the height of the support portion 545. That is, the shortest distance between the upper side of the step portion 544 and the trolley body portion 511 is longer than the shortest distance between the upper side of the support portion 545 and the trolley body portion 511.

[0559] In other words, the shortest distance between the capacitor assembly 100 or valve assembly 200 and the upper side of the step portion 544 is longer than the shortest distance between the capacitor assembly 100 or valve assembly 200 and the upper side of the support portion 545.

[0560] Therefore, a space is formed on the upper side of the step portion 544, surrounded by the surfaces of the track extension portion 543 and the support portion 545 facing each other. This space is defined as the guide space portion 544a.

[0561] The guide space 544a is a space for inserting the disc 514b of the wheel 514. The guide space 544a restricts the left and right movement distance of the disc 514b, so that the wheel 514 can rotate while it is mounted on the support 545.

[0562] At this time, the length in the width direction of the guide space 544a (the length in the left-right direction in the illustrated embodiment) is formed to be greater than the thickness of the disk portion 514b. In other words, the length of the step portion 544 extending between the track extension portion 543 and the support portion 545 is formed to be longer than the width of the disk portion 514b.

[0563] Therefore, the disk portion 514b, when inserted into the guide space portion 544a, can move toward the track extension portion 543 or the support portion 545.

[0564] At this time, as described above, the guide space 544a is defined by being surrounded by the upper side of the step portion 544 and the surfaces of the track extension portion 543 and the support portion 545 facing each other.

[0565] That is, the space in the inner direction of the guide space 544a, i.e. the direction towards the track bend 542, is divided by the surface in the outer direction of the track extension 543, i.e. the direction towards the step 544.

[0566] Furthermore, the space in the outer direction of the guide space 544a, i.e. the direction toward the support 545, is divided by the surface in the inner direction of the support 545, i.e. the direction toward the step 544.

[0567] Therefore, the movement distance of the disc portion 514b inserted into the guide space portion 544a in the inner direction is limited by the outer direction surface of the track extension portion 543. Furthermore, the movement distance of the disc portion 514b in the outer direction is limited by the inner direction surface of the support portion 545.

[0568] Therefore, the wheel 514 will not detach in the inner or outer direction of the track unit 540, i.e., in the left-right direction in the illustrated embodiment.

[0569] The support portion 545 supports the wheel body portion 514a of the wheel portion 514. The wheel body portion 514a is mounted on the support portion 545. The upper side surface of the support portion 545 can contact the outer peripheral surface of the wheel body portion 514a.

[0570] The support portion 545 extends from the outer end of the stepped portion 544, i.e., the end in the direction away from the track extension portion 543 (i.e., the direction opposite to the track extension portion 543). The support portion 545 may be extended such that the outer end is located directly below the wheel body portion 514a.

[0571] The upper side of the support portion 545, that is, the surface that contacts the wheel body portion 514a, can be formed as a plane.

[0572] Therefore, the support portion 545 can stably support the load of the trolley unit 510 and the capacitor assembly 100 and valve assembly 200 housed thereon. In addition, the wheel portion 514 can move stably when rolling on the upper side of the support portion 545.

[0573] The support portion 545 is formed to be higher than the step portion 544. That is, the shortest distance between the upper side of the support portion 545 and the trolley body portion 511 is shorter than the shortest distance between the upper side of the step portion 544 and the trolley body portion 511.

[0574] In other words, the shortest distance between the capacitor assembly 100 or valve assembly 200 and the upper side of the step portion 544 is longer than the shortest distance between the capacitor assembly 100 or valve assembly 200 and the upper side of the support portion 545.

[0575] The difference between the height of the support portion 545 and the height of the step portion 544 can be determined based on the difference between the diameter of the wheel body portion 514a and the diameter of the disc portion 514b. That is, the difference between the height of the support portion 545 and the height of the step portion 544 can be determined to be greater than the difference between the diameter of the wheel body portion 514a and the diameter of the disc portion 514b.

[0576] Therefore, even if the wheel body 514a is placed on the support 545, the disc 514b will not come into contact with the step 544.

[0577] The support portion 545 is formed at a height lower than that of the track extension portion 543. That is, the shortest distance between the upper side of the support portion 545 and the trolley main body portion 511 is longer than the shortest distance between the upper side of the track extension portion 543 and the trolley main body portion 511.

[0578] In other words, the shortest distance between the capacitor assembly 100 or valve assembly 200 and the upper side of the support portion 545 is longer than the shortest distance between the capacitor assembly 100 or valve assembly 200 and the upper side of the track extension portion 543.

[0579] As described above, an arcuate portion 513 is formed in the trolley unit 510. If the trolley unit 510 is slidably coupled to the track unit 540, the lower side, the inner side (the direction in which each arcuate portion 513 faces each other), and the upper side of the arcuate portion 513 are surrounded by the track curvature portion 542 of the track unit 540.

[0580] Therefore, the trolley unit 510 will not detach from the track unit 540 in the upward direction.

[0581] Furthermore, a guide space 544a is formed in the track unit 540, which is surrounded by the track extension 543, the step portion 544, and the support portion 545. The disc portion 514b of the wheel portion 514 is inserted into the guide space 544a.

[0582] Therefore, the movement distance of the wheel portion 514 in the direction away from the track bend portion 542 (i.e., in the opposite direction to the track bend portion 542) or in the direction toward the track bend portion 542 is limited. As a result, the trolley unit 510 will not detach from the track unit 540 in the left or right direction.

[0583] 7. Description of the anti-detachment part 600 according to an embodiment of the present invention

[0584] Submodule 10 of this embodiment of the invention includes an anti-detachment part 600. The anti-detachment part 600 prevents the trolley unit 510, which is slidably coupled to the track unit 540, from arbitrarily detaching.

[0585] The following is for reference Figures 13 to 16 The anti-detachment part 600 of the present invention will be described in detail in an embodiment.

[0586] In the illustrated embodiment, the anti-detachment part 600 includes: a stopper member 610, a rotary bearing member 620, an elastic member 630, a blocking plate 640, and a stop groove 650.

[0587] The stop member 610 limits the distance that the trolley unit 510 can move forward. Under the action of the stop member 610, the trolley unit 510 will not arbitrarily separate from the track unit 540 via the front side of the track unit 540.

[0588] The stop member 610 may be provided on one or more of the left and right wheel portions 514 of the trolley unit 510. In the illustrated embodiment, the stop member 610 is provided on the left wheel portion 514 of the trolley unit 510. Alternatively, the stop member 610 may be provided on the right wheel portion 514 of the trolley unit 510.

[0589] Furthermore, the stop member 610 has a plurality of components and can be respectively provided on the left and right wheel portions 514.

[0590] The stop member 610 is rotatably coupled to the wheel portion 514. The stop member 610 may not rotate regardless of the rotation of the wheel portion 514. Similarly, the stop member 610 may rotate regardless of the stationary state of the wheel portion 514.

[0591] The stop member 610 is inserted into the stop groove 650 formed on the track unit 540. The side of the stop member 610 that is inserted, i.e. the front side in the illustrated embodiment, contacts the first surface 651 of the stop groove 650. This prevents the stop member 610 and the trolley unit 510 connected to the stop member 610 from moving further forward.

[0592] The stop member 610 can move on the upper part of the support 545. Specifically, the forward-facing side of the stop member 610 can move together with the trolley unit 510 while in contact with the upper side of the support 545.

[0593] The stop member 610 is connected to the elastic member 630. The elastic member 630 provides an elastic force to maintain the side of the stop member 610 in contact with the support portion 545. The stop member 610 may be formed of a material with high rigidity. In one embodiment, the stop member 610 may be formed of iron (Fe) material.

[0594] The stop member 610 includes: a stop member body 611, a locking plate 612, a wheel engagement part 613, and an elastic member engagement hole 614.

[0595] The main body portion 611 of the stop member extends in one direction. In one embodiment, the main body portion 611 of the stop member may extend in the same direction as the support portion 545.

[0596] A locking plate 612 is formed on one side of the stop body 611, i.e., the front end in the illustrated embodiment. A wheel engagement portion 613 is formed through the center of the stop body 611. In addition, an elastic member engagement hole 614 is formed through the other side of the stop body 611, i.e., the rear side in the illustrated embodiment.

[0597] The stop body 611 is configured such that its front end faces downward and its rear end faces upward. This is because the elastic member 630, which engages with the elastic member engagement hole 614, faces... Figure 15 In the embodiment, the rear end of the main body 611 of the stop member is pulled counterclockwise.

[0598] Therefore, the front end of the stop body 611 can remain in contact with the upper side of the support 545.

[0599] A locking plate 612 is provided at the front end of the main body 611 of the stop.

[0600] The locking plate 612 is the part that contacts each surface of the stop member 610 and the stop groove 650. If the locking plate 612 contacts the first surface 651 or the second surface 652 of the stop groove 650, the trolley unit 510 will no longer move forward.

[0601] A locking plate 612 extends from the front end of the stop body 611. The locking plate 612 may extend at a predetermined angle to the stop body 611. In one embodiment, the locking plate 612 may extend perpendicularly to the stop body 611.

[0602] In the illustrated embodiment, the locking plate 612 is formed by protruding a predetermined distance from the front end of the stop body 611 in the inward direction, i.e., towards the arcuate portion 513. In one embodiment, the locking plate 612 may be extended such that one end in the inward direction is located above the step portion 544.

[0603] If the main body 611 of the stop member is inserted into the stop groove 650, the locking plate 612 contacts the first surface 651 or the second surface 652. As a result, the trolley unit 510, which is equipped with the rotatable stop member 610, no longer moves forward.

[0604] The wheel fastening member 532 is fastened at the wheel engagement 613. The stop member 610 is rotatably connected to the trolley unit 510 via the wheel fastening member 532.

[0605] The wheel engagement portion 613 can be formed through the stop body portion 611. The center of the wheel engagement portion 613 can be formed coaxially with the center of the wheel portion 514.

[0606] The elastic member engagement hole 614 is located on one side behind the stop body 611, i.e., in the illustrated embodiment, on the side away from the stop groove 650 (i.e., in the opposite direction to the stop groove 650). The elastic member engagement hole 614 can be configured to be biased towards the upper side of the stop body 611.

[0607] One end of the elastic member 630 is engaged with the elastic member engagement hole 614. The one end of the elastic member 630 can rotate while inserted into the elastic member engagement hole 614.

[0608] A rotary bearing member 620 is coupled to the wheel portion 514 to maintain the stop member 610 in a stopped state or to enable the stop member 610 to rotate independently of the rotation of the wheel portion 514. The rotary bearing member 620 is located between the stop member 610 and the wheel portion 514.

[0609] The elastic member 630 applies an elastic force to the stop member 610. The elastic member 630 applies an elastic force toward the rear end of the stop member 610 in the direction toward the trolley body 511. In the illustrated embodiment, the elastic member 630 applies a counterclockwise elastic force to the stop member 610.

[0610] Therefore, the rear end of the stop member 610 can be kept in a state of being pulled upward toward the trolley body 511, i.e., upward in the illustrated embodiment.

[0611] The elastic member 630 can be provided in any shape that can deform to its form and store restoring force. In one embodiment, the elastic member 630 may be a coil spring.

[0612] The elastic member 630 includes a trolley connection portion 631 and a stop connection portion 632. In one embodiment, the trolley connection portion 631 and the stop connection portion 632 may have the shape of a hook.

[0613] The trolley connection part 631 is located at the front end of the elastic member 630. The trolley connection part 631 is connected to the elastic member joint part 511a.

[0614] The stop connection 632 is located at the rear end of the elastic member 630. The stop connection 632 is rotatably engaged with the elastic member engagement hole 614.

[0615] Therefore, the elastic member 630 can be stretched or contracted between the elastic member joint 511a and the elastic member joint hole 614.

[0616] Under the action of the elastic member 630, the stop member 610 can maintain its front end biased downward and its rear end biased upward.

[0617] Furthermore, if the stop member 610 enters the stop groove 650, the elastic member 630 applies a counterclockwise restoring force to the stop member 610. Thus, if the stop member 610 separates from the stop groove 650, the front end of the stop member 610 can return to a state of contact with the upper side of the support portion 545.

[0618] The blocking plate 640 encloses the front side of the track unit 540. Additionally, the blocking plate 640 can also enclose the rear side of the track unit 540 (see reference). Figure 20a and Figure 20b The blocking plate 640 may be provided to prevent the trolley unit 510 from arbitrarily detaching from the track unit 540 if the submodule 10 needs to be moved.

[0619] The blocking plate 640 can be integrated with the track unit 540 to cover part of the track body 541, the track extension 543, and the step portion 544. Additionally, the blocking plate 640 can be integrated with the trolley unit 510 to cover part of the curved portion 513.

[0620] The blocking plate 640 can be attached to the trolley unit 510 and the track unit 540 using a blocking fastening member 641. In one embodiment, the blocking fastening member 641 can be a screw member.

[0621] There may be a plurality of blocking fastening members 641. In the illustrated embodiment, there are four blocking fastening members 641. The blocking fastening members 641 can be fastened to the trolley hollow portion 513a and the fastening hole 543a.

[0622] The front end of the stop member 610 is inserted into the stop groove 650. Specifically, the front end of the locking plate 612 and the stop body 611 connected to the locking plate 612 are inserted into the stop groove 650.

[0623] A stop groove 650 is formed in the support portion 545. Specifically, the stop groove 650 is formed on the front side of the support portion 545.

[0624] The stop groove 650 is preferably positioned at a location that prevents the trolley unit 510 from arbitrarily disengaging from the track unit 540 when inserted into the front end of the stop member 610.

[0625] In one embodiment, the stop groove 650 may be formed at a position where the front end of the trolley unit 510 and the front end of the track unit 540 are on the same vertical line when the locking plate 612 and the first surface 651 of the stop groove 650 are in contact.

[0626] The stop slots 650 can be formed in multiples. The multiple stop slots 650 are arranged at a predetermined distance from each other along the front-back direction, i.e., the direction in which the track unit 540 extends.

[0627] The stop groove 650 formed on the front side among the plurality of stop grooves 650 can limit the movement distance of the valve trolley unit 510b. In addition, the stop groove 650 formed on the rear side among the plurality of stop grooves 650 can limit the movement distance of the capacitor trolley unit 510a.

[0628] The stop groove 650 is formed by recessing a predetermined length from the upper side of the support portion 545. The degree of recess in the stop groove 650 can vary along the length of the support portion 545.

[0629] In the illustrated embodiment, the rearward slope of the stop groove 650 is formed more slowly than the forward slope. Therefore, the stop member 610, which moves along with the trolley unit 510, can enter the stop groove 650 along the rearward slope. Furthermore, the entered stop member 610 cannot move further forward due to the forward slope.

[0630] The stop groove 650 includes a first surface 651 and a second surface 652.

[0631] The first surface 651 is the portion that contacts the locking plate 612 of the stop member 610 inserted into the stop groove 650. The first surface 651 can be defined as the front side of the stop groove 650, which is recessed from the upper side of the support portion 545.

[0632] In other words, the first surface 651 is disposed adjacent to the side of the track unit 540 extending in the illustrated embodiment, i.e., the front end. The first surface 651 is formed to surround the side of the stop groove 650, i.e., the front side in the illustrated embodiment.

[0633] The first surface 651 forms a predetermined angle with the upper side surface of the support portion 545 and extends therefrom. This predetermined angle can be larger than the angle formed by the second surface 652 and the upper side surface of the support portion 545. In one embodiment, the predetermined angle can be a right angle.

[0634] The rear end of the first surface 651 is continuous with the front end of the second surface 652.

[0635] The second surface 652 is the portion through which the locking plate 612 of the stop member 610 moves toward and passes through the first surface 651. The lower end of the locking plate 612 can move toward the first surface 651 while in contact with the second surface 652.

[0636] The second surface 652 can be defined as the rear side of the stop groove 650 formed by recessing from the upper side of the support portion 545. The first surface 651 and the second surface 652 are continuous.

[0637] In other words, the second surface 652 extends towards the track unit 540 in a direction away from the front end in the illustrated embodiment (i.e., in the opposite direction to the front end). That is, the second surface 652 is configured to be further away from the end of the track unit 540 (i.e., the front side) than the first surface 651. In other words, the second surface 652 is located behind the first surface 651.

[0638] The second surface 652 extends and forms a predetermined angle with the upper side surface of the support portion 545. This predetermined angle can be smaller than the angle formed by the first surface 651 and the upper side surface of the support portion 545. In one embodiment, the predetermined angle can be an acute angle.

[0639] The rear end of the second surface 652 extends from the upper side of the support 545.

[0640] Therefore, the locking plate 612 can move forward or backward along the second surface 652. On the other hand, if the locking plate 612 comes into contact with the first surface 651, the locking plate 612 will no longer move forward.

[0641] This limits the forward movement distance of the stop member 610 and the trolley unit 510 connected to the rotatable stop member 610.

[0642] As described above, the front end of the stop member 610 moves forward or backward together with the trolley unit 510 while in contact with the upper side of the support portion 545. If the front end of the stop member 610 reaches the stop groove 650, the front end of the stop member 610 rotates and moves downward along the second surface 652.

[0643] If the front end of the stop member 610 contacts the first surface 651, the stop member 610 will no longer move forward due to the shape of the first surface 651. Consequently, the trolley unit 510 connected to the stop member 610 will also not move forward. Therefore, the forward movement distance of the trolley unit 510 can be limited.

[0644] At this point, it is possible to consider a situation where submodule 10 needs to be extended from frame 20 for maintenance or other purposes. The capacitor assembly 100 and valve assembly 200 constituting submodule 10 are housed in trolley unit 510. Therefore, it is necessary to first perform the process of separating trolley unit 510 from track unit 540.

[0645] As described above, if the front end of the stop member 610 contacts the first surface 651 of the stop groove 650, the stop member 610 will no longer move forward.

[0646] Therefore, the stop member 610 is rotated by pressing, thereby disengaging from the stop groove 650.

[0647] Specifically, the end of the stop member 610 that does not contact the first surface 651, i.e., the rear end in the illustrated embodiment, is pressed down. As a result, the end of the stop member 610 that contacts the first surface 651, i.e., the front end, rotates in a direction away from the first surface 651 (i.e., in the opposite direction to the first surface 651), i.e., clockwise in the illustrated embodiment, thereby disengaging from the stop groove 650.

[0648] Next, the trolley unit 510 slides toward one end of the track unit 540, i.e., the front end in the illustrated embodiment, under the action of an external force.

[0649] At this time, the end of the track unit 540 is closed by the blocking plate 640. Therefore, if the fastening of the blocking fastening member 641 is released, the blocking plate 640 separates from the track unit 540.

[0650] Next, the trolley unit 510 can be separated from the track unit 540 using the installation separation section 700 described later.

[0651] Therefore, the trolley unit 510 will not arbitrarily separate from the track unit 540. This prevents safety accidents caused by the arbitrary detachment of the trolley unit 510.

[0652] Conversely, when the stop member 610 moves rearward, the front end of the stop member 610 moves rearward while in contact with the second surface 652. As described above, the second surface 652 can form an acute angle with the upper surface of the support portion 545. In addition, the rear end of the second surface 652 is continuous with the upper surface of the support portion 545.

[0653] Therefore, unlike the case of moving forward, when moving backward, the stop member 610 can move easily.

[0654] Additionally, blocking plates 640 may be provided at the front and rear ends of the track unit 540. The blocking plates 640 are fastened to the trolley unit 510 and the track unit 540, respectively. Thus, the front and rear sides of the trolley unit 510 are blocked by the blocking plates 640.

[0655] Therefore, under the action of the blocking plate 640, the trolley unit 510 will not arbitrarily detach from the track unit 540. This can be applied to situations where the submodule 10 moves or where the movement of the trolley unit 510 needs to be restricted.

[0656] 8. Description of the mounting / dismounting section 700 according to an embodiment of the present invention

[0657] Submodule 10 of this embodiment includes a mounting separation section 700. Under the action of the mounting separation section 700, the trolley unit 510, on which the capacitor assembly 100 or the valve assembly 200 is mounted, can be easily connected to or detached from the track unit 540.

[0658] The following is for reference Figure 17 and Figure 18 The mounting and disassembly section 700 of an embodiment of the present invention will be described in detail.

[0659] In the illustrated embodiment, the installation separation part 700 includes: a lever member 710, a lever connecting member 720, and a lever insertion groove 730.

[0660] The lever member 710 is inserted into the lever engagement member 720 and the lever insertion slot 730. The user can easily engage the trolley unit 510 to the track unit 540 using the lever member 710. Additionally, the user can easily detach the trolley unit 510 from the track unit 540 using the lever member 710.

[0661] The lever member 710 can function as a lever. That is, the lever member 710 can pull the lever connecting member 720 forward or push it backward with the lever insertion slot 730 as the axis.

[0662] The lever member 710 can be provided together with the submodule 10. For this purpose, a component (not shown) for mounting the lever member 710 can be provided in the frame 20.

[0663] The lever member 710 can be separated from the submodule 10. When it is necessary to separate the submodule 10 from the frame 20, the user can carry the lever member 710 to separate the submodule 10.

[0664] The lever component 710 includes an extension 711 and a handle 712.

[0665] The extension 711 is the part that engages with the lever connecting member 720 and the lever insertion groove 730. The extension 711 extends from one end of the handle portion 712.

[0666] The extension 711 can be formed of a material with high rigidity. In one embodiment, the extension 711 can be formed of iron.

[0667] The extension 711 includes a first extension 711a and a second extension 711b.

[0668] The first extension 711a is the part that is directly connected to the lever connecting member 720 and the lever insertion slot 730. One end of the first extension 711a is connected to the second extension 711b.

[0669] The second extension 711b is located between the first extension 711a and the handle 712. The second extension 711b is connected to the first extension 711a and the handle 712 respectively.

[0670] The second extension 711b extends and forms a predetermined angle with the first extension 711a. In one embodiment, the predetermined angle may be a right angle.

[0671] The second extension 711b extends at a predetermined angle to the handle portion 712. In one embodiment, the second extension 711b may extend parallel to the handle portion 712. Furthermore, the central axis of the extension direction of the second extension 711b and the central axis of the extension direction of the handle portion 712 may be the same.

[0672] The handle portion 712 is the part for the user to grip the lever member 710. The handle portion 712 extends from the side of the second extension 711b in a direction away from the first extension 711a (i.e., in the opposite direction to the first extension 711a). The handle portion 712 is continuous with the second extension 711b.

[0673] The handle portion 712 extends a predetermined distance away from the second extension portion 711b (i.e., in the opposite direction to the second extension portion 711b). In one embodiment, the extension length of the handle portion 712 may be the same as the extension length of the second extension portion 711b.

[0674] To facilitate user operation, a gripping member may be provided on the outer peripheral surface of the handle portion 712. The gripping member is configured to increase the friction between the handle portion 712 and the palm of the hand holding the handle portion 712. In one embodiment, the gripping member may be formed of rubber material.

[0675] The lever connecting member 720 is connected to the lever member 710. The user can move the lever connecting member 720 and the trolley unit 510 connected to the lever connecting member 720 forward or backward by pushing or pulling the lever member 710.

[0676] The lever engagement member 720 is engaged with the trolley unit 510. Specifically, the lever engagement member 720 is located on the lower side of the front side of the trolley main body 511. The lever engagement member 720 can be fastened to the trolley main body 511 by the lever fastening member 531 (see reference). Figure 13 ).

[0677] The lever connecting member 720 is formed by protruding a predetermined distance from the front side of the trolley unit 510 in a direction away from the trolley unit 510 (i.e., in the opposite direction to the trolley unit 510), as shown in the illustrated embodiment. The lever connecting member 720 can be easily identified by this protruding structure.

[0678] The lever connecting member 720 can be formed of a material with high rigidity. In one embodiment, the lever connecting member 720 can be formed of iron. Thus, even when subjected to pressure from the lever member 710 formed of a rigid material, the shape deformation of the lever connecting member 720 can be minimized.

[0679] The lever connection component 720 includes a lever insertion slot 721.

[0680] A lever insertion slot 721 is formed through the interior of the lever connecting member 720. A first extension 711a of the lever member 710 is inserted through into the lever insertion slot 721. The first extension 711a can pass through the lever insertion slot 721 and extend to the lever insertion slot 730.

[0681] In the illustrated embodiment, the lever insertion slot 721 is formed with a quadrilateral cross-section. This is because the area where the first extension 711a contacts the lever connecting member 720 is planar. The shape of the lever insertion slot 721 can be changed accordingly to the shape of the first extension 711a.

[0682] The length of the lever insertion slot 721 in the front-to-back direction is preferably longer than the thickness of the first extension 711a. Thus, the first extension 711a can be inserted into the first lever insertion slot 731 or the second lever insertion slot 732 while penetrating the lever insertion slot 721.

[0683] The center of lever insertion slot 721 can be located on the same plane or on the same line as the center of the first lever insertion slot 731 and the second lever insertion slot 732.

[0684] The lever insertion slot 730 is a space for inserting the end of the first extension 711a that passes through the lever insertion slot 721. If the user pushes or pulls the handle 712 while the end of the first extension 711a is inserted into the lever insertion slot 730, the trolley unit 510 can move forward or backward.

[0685] A lever insertion groove 730 is formed in the track body portion 541. Specifically, the lever insertion groove 730 is formed by recessing a predetermined distance from the front side of the upper side surface of the track body portion 541.

[0686] The lever insertion slot 730 can be formed in a plurality of forms. In the illustrated embodiment, two lever insertion slots 730 are formed. Of the two lever insertion slots 730, the lever insertion slot 730 formed on the front side can be defined as the first lever insertion slot 731, and the lever insertion slot 730 formed on the rear side is defined as the second lever insertion slot 732.

[0687] The first lever insertion groove 731 is located on the front side of the track body portion 541. Specifically, the first lever insertion groove 731 is located at the front end of the track body portion 541. That is, the first lever insertion groove 731 is formed by recessing a predetermined distance between the upper side and the front side of the track body portion 541.

[0688] The end of the first extension 711a is inserted into the first lever insertion slot 731. The inserted end of the first extension 711a contacts the rear side of the first lever insertion slot 731, i.e., the direction away from the open side of the track body 541 (i.e., the direction opposite to the open side).

[0689] Furthermore, the inserted end of the first extension 711a also contacts the lower side of the first lever insertion slot 731. The lever member 710 can function as a lever with the aforementioned surface as a "fulcrum".

[0690] The lever member 710 can rotate counterclockwise, i.e., in the direction away from the trolley unit 510 (i.e., opposite to the direction of the trolley unit 510), while it is inserted into the first lever insertion slot 731. As a result, the first extension 711a contacts the front end of the trolley unit 510 or the end of the lever connecting member 720 located behind the lever insertion slot 721.

[0691] The end of the trolley unit 510 or the end of the lever connecting member 720 can function as a "point of action," that is, the part where force is applied to the lever member 710. It should be understood that the handle portion 712 will function as a "point of force."

[0692] A second lever insertion groove 732 is formed on the rear side of the first lever insertion groove 731.

[0693] The second lever insertion groove 732 is located on the front side of the track body portion 541. Specifically, the second lever insertion groove 732 is formed at a predetermined distance from the first lever insertion groove 731 formed at the front end of the track body portion 541. The second lever insertion groove 732 is formed by recessing a predetermined distance from the upper side of the track body portion 541.

[0694] The end of the first extension 711a is inserted into the second lever insertion groove 732. The inserted end of the first extension 711a contacts the rear side of the second lever insertion groove 732, i.e., the side away from the first lever insertion groove 731 (i.e., the opposite direction to the first lever insertion groove 731).

[0695] Furthermore, the inserted end of the first extension 711a also contacts the lower side of the second lever insertion slot 732. The lever member 710 can function as a lever with the aforementioned surface as a "fulcrum".

[0696] The lever member 710 can press the trolley unit 510 while engaged with the lever connecting member 720 and the lever insertion slot 730 respectively. That is, the lever member 710 can press the trolley unit 510 in one direction extending toward the track unit 540, i.e., the front side, or in another direction extending toward the track unit 540, i.e., the rear side.

[0697] Specifically, the lever member 710 can be rotated clockwise, i.e., the handle portion 712 approaches the trolley unit 510, while inserted into the second lever insertion slot 732. As a result, the second extension portion 711b contacts the front end of the trolley unit 510 or the end of the lever connecting member 720 disposed on the rear side of the lever insertion slot 721.

[0698] The end of the trolley unit 510 or the end of the lever connecting member 720 can function as a "point of action," that is, the part where force is applied to the lever member 710. It should be understood that the handle portion 712 will function as a "point of force."

[0699] As described above, the extension 711 of the lever member 710 can pass through the lever insertion groove 721 of the lever connecting member 720. In addition, the end of the first extension 711a can be inserted into the first lever insertion groove 731 or the second lever insertion groove 732.

[0700] Figure 17 The diagram shows the state in which the lever member 710 is inserted into the first lever insertion slot 731 to lead out the trolley unit 510 and the capacitor assembly 100 or valve assembly 200 disposed in the trolley unit 510.

[0701] If the user rotates the handle 712 in a direction away from the trolley unit 510 (i.e., in the opposite direction to the trolley unit 510), i.e., counterclockwise, the front side of the first extension 711a presses against the end located on the front side of the lever insertion slot 721.

[0702] As a result, the trolley unit 510, connected to the lever coupling member 720, moves forward, allowing the trolley unit 510 to slide and disengage from the track unit 540. It should be understood that the stop member 610 needs to be disengaged from the stop groove 650 before performing this process.

[0703] Figure 18 The diagram shows the state in which the lever member 710 is inserted into the second lever insertion slot 732 to combine the trolley unit 510 and the capacitor assembly 100 or valve assembly 200 disposed in the trolley unit 510 into the track unit 540.

[0704] If the user rotates the handle 712 in a clockwise direction toward the trolley unit 510, the rear side of the first extension 711a presses against the end located on the rear side of the lever insertion slot 721.

[0705] As a result, the trolley unit 510 connected to the lever engagement member 720 moves to the rearward side, so that the trolley unit 510 can slide and engage with the track unit 540.

[0706] Therefore, the process of joining and separating heavy trolley units 510 and track units 540 can be easily performed.

[0707] 9. Description of the short-circuit adjustment unit 800 according to an embodiment of the present invention

[0708] Submodule 10 of this embodiment includes a short-circuit adjustment unit 800. The short-circuit adjustment unit 800 is configured to simultaneously short-circuit or ground each capacitor element (not shown) housed within a plurality of capacitor assemblies 100 through simple operation.

[0709] The following is for reference Figures 19 to 21 The short-circuit adjustment unit 800 of an embodiment of the present invention will be described in detail. In the illustrated embodiment, the short-circuit adjustment unit 800 is disposed on the frame 20. Therefore, the short-circuit adjustment unit 800 can also be considered as being included in the frame 20.

[0710] However, since the function of the short-circuit adjustment unit 800 is to short-circuit multiple sub-modules 10, in the following description, it is assumed that the short-circuit adjustment unit 800 is included in the sub-modules 10.

[0711] In the illustrated embodiment, the short-circuit adjustment unit 800 includes: a moving member 810, a short-circuit block 820, a variable connector 830, a connecting member 840, and an indicating member 850.

[0712] The movable component 810 is configured to allow a plurality of variable connectors 830 to move simultaneously.

[0713] The movable member 810 is slidably coupled to the frame 20. Specifically, the movable member 810 is slidably coupled to the rear side of the support 23 located at the rearmost side.

[0714] The movable member 810 is connected to the variable connector 830. If the movable member 810 slides, the variable connector 830 can also slide together with the movable member 810.

[0715] The movable member 810 is connected to the connecting member 840. The movable member 810 can slide to the left or right as the connecting member 840 moves.

[0716] The movable member 810 extends in one direction. In the illustrated embodiment, the movable member 810 extends in the same left-right direction as the support portion 23. The extension length of the movable member 810 may be shorter than the extension length of the support portion 23.

[0717] The movable component 810 includes an extended main body portion 811 and an end insertion groove 812.

[0718] The extended main body portion 811 forms the main body of the movable member 810. The extended main body portion 811 extends along the length direction of the movable member 810.

[0719] The extended main body 811 can be inserted into the slots formed on the short-circuit blocks 820. That is, in the illustrated embodiment, the extended main body 811 is inserted into the slots formed on the central portion of the short-circuit blocks 820, which are arranged at predetermined distances from each other along the length direction.

[0720] Therefore, the extended main body portion 811 is located between the movable member support portions 822 of the short-circuit block 820. In addition, the extended main body portion 811 is configured to cover a portion of the short-circuit block 820 located between the movable member support portions 822.

[0721] The extended main body 811 can move to the left or right while inserted into the slot. This movement is achieved by movable member supports 822 provided on the upper and lower sides of the short-circuit block 820.

[0722] An end insertion groove 812 is formed through the extension body portion 811. A fastening member is provided on the extension body portion 811 adjacent to the end of the end insertion groove 812. The fastening member secures the variable connector 830 to the extension body portion 811.

[0723] The variable connector 830 has its two ends inserted in the length direction into the end insertion slot 812. The two ends of the variable connector 830 inserted into the end insertion slot 812 can pass through the end insertion slot 812 and contact the portion of the short-circuit block 820.

[0724] As the moving component 810 slides, it can come into contact with or separate from the short-circuit block 820.

[0725] An end insertion groove 812 is formed through the extension body portion 811. The end insertion groove 812 is formed by extending a predetermined length in the direction in which the extension body portion 811 extends.

[0726] The specified length of the end insertion slot 812 can be longer than the width length (i.e., the length in the left-right direction) of the short-circuit block 820. Thus, the end of the variable connector 830 extending into the end insertion slot 812 can contact or separate from the short-circuit block 820.

[0727] The end insertion slots 812 can be formed in a plurality of units. The plurality of end insertion slots 812 are formed with a predetermined distance between them. The predetermined distance can be shorter than the distance between the short-circuit blocks 820.

[0728] The variable connector 830 partially extends through the end insertion slot 812. Specifically, the first connector end 831 and the second connector end 832 of the variable connector 830 respectively extend through the end insertion slot 812.

[0729] In other words, the first connector end 831 and the second connector end 832 can pass through the end insertion slot 812 and contact or separate from the short-circuit block 820.

[0730] The short-circuit block 820 and the variable connector 830 can be electrically contacted or disconnected.

[0731] When only one end of the variable connector 830 is in contact with the short-circuit block 820, the voltages of the individual submodules 10 can remain different from each other. When both ends of the variable connector 830 are in contact with the short-circuit block 820, the individual submodules 10 are short-circuited to each other, so that the voltages of the individual submodules 10 can change in the same way.

[0732] The short-circuit block 820 may be formed of a conductive material. In one embodiment, the short-circuit block 820 may be formed of aluminum (Al) or iron (Fe).

[0733] The short-circuit block 820 extends in one direction. In the illustrated embodiment, the short-circuit block 820 extends in a vertical direction. That is, the short-circuit block 820 and the moving member 810 extend at a predetermined angle to each other.

[0734] Movable member support portions 822 are provided on the upper and lower sides of the short-circuit block 820. A space is formed between the movable member support portions 822 for the insertion of the extension body portion 811.

[0735] A contact portion 823 is formed in the space, protruding in a direction away from the support portion 23 (i.e., in the opposite direction to the support portion 23).

[0736] There are multiple short-circuit blocks 820. The multiple short-circuit blocks 820 are arranged at a predetermined distance from each other. The predetermined distance can be longer than the distance between the end insertion slots 812.

[0737] The short-circuit block 820 extends in one direction, namely the vertical direction in the illustrated embodiment. The cross-section of the short-circuit block 820 can be formed as a quadrilateral. That is, the short-circuit block 820 can be formed as a quadrangular prism.

[0738] In the illustrated embodiment, the cross-section of the short-circuit block 820 has a trapezoidal shape with one side edge attached to the frame 20 as the bottom edge and the other side edge opposite to the frame 20 as the top edge.

[0739] In other words, the length of the side of the short-circuit block 820 that is attached to the frame 20 along the direction (i.e., the left-right direction) extending from the moving member 810 is longer than the length of the other side of the short-circuit block 820 that faces the same side along the direction (i.e., the left-right direction) extending from the moving member 810.

[0740] The opposing faces of the short-circuit blocks 820 arranged adjacent to each other can be formed at an angle. In one embodiment, each of the faces can form an acute angle and extend toward one side (i.e., the front side) of the short-circuit block 820 to which the short-circuit block 820 is attached to the frame 20.

[0741] That is, the opposing faces of the adjacent short-circuit blocks 820 are formed at an angle away from the frame 20. In other words, the opposing faces of the adjacent short-circuit blocks 820 are formed at an angle away from each other in a direction toward the moving member 810.

[0742] That is, in the illustrated embodiment, the distance between the opposing surfaces can increase as they move further away from the frame 20 in the rearward direction.

[0743] Due to the shape of the short-circuit block 820, the first connector end 831 and the second connector end 832 of the variable connector 830 contact the surface (i.e., the inclined surface) of the short-circuit block 820 and can easily contact the short-circuit block 820.

[0744] Additionally, the first connector end 831 and the second connector end 832 of the variable connector 830 can easily access the other side of the short-circuit block 820 (i.e., the side that is spaced apart from and faces the frame 20) along the face of the short-circuit block 820 (i.e., the inclined face).

[0745] Therefore, the short-circuit block 820 and the variable connector 830 can make elastic contact without additional elastic members. That is, the variable connector 830 makes contact with the short-circuit block 820 while applying an elastic force toward the short-circuit frame 20. This will be explained in detail later.

[0746] The short-circuit block 820 includes: a short-circuit conductor 821, a movable component support 822, and a contact portion 823.

[0747] The short-circuit wire 821 is electrically connected to the blocking plate 640 and the variable connector 830. One end of the short-circuit wire 821 is electrically connected to the blocking plate 640. The other end of the short-circuit wire 821 is electrically connected to the variable connector 830.

[0748] Thus, the track unit 540 and capacitor assembly 100, which are electrically contactable with the blocking plate 640, can be energized with the variable connector 830.

[0749] That is, the variable connector 830 can be electrically connected to external electronic equipment.

[0750] In this specification, the description assumes that the external electronic device is a capacitor assembly 100 that internally houses capacitor elements (not shown). However, it should be understood that the short-circuit adjustment unit 800 of the present invention can be applied to any electronic device that requires a short circuit.

[0751] There may be a plurality of short-circuit wires 821. Each of the plurality of short-circuit wires 821 is electrically connected to a plurality of blocking plates 640 and a plurality of variable connectors 830.

[0752] The movable member support 822 supports the movable member 810 when the movable member 810 is inserted into the short-circuit block 820 so that it can slide.

[0753] The movable component support 822 can be rotatably coupled to the short-circuit block 820. If the movable component 810 slides to the left or right, the movable component support 822 can also rotate.

[0754] There may be a plurality of movable component support portions 822. In the illustrated embodiment, there are two movable component support portions 822, located on the upper and lower sides of the short-circuit block 820, respectively.

[0755] The movable component support 822 includes: a first portion 822a that contacts the short-circuit block 820; and a second portion 822b that is continuous with the first portion 822a and is located in a direction away from the short-circuit block 820 (i.e., in the opposite direction to the short-circuit block 820).

[0756] The diameter of the first portion 822a can be smaller than the diameter of the second portion 822b. Furthermore, the first portion 822a is formed by protruding a predetermined length from one side of the short-circuit block 820 in a direction away from the support portion 23 (i.e., opposite to the support portion 23). This length can be greater than or equal to the thickness of the moving member 810.

[0757] Thus, a predetermined space is formed between one side of the short-circuit block 820 and the second portion 822b. The upper and lower ends of the movable member 810 can be inserted into the predetermined spaces formed on the upper and lower sides, respectively.

[0758] The contact portion 823 is the portion for contact with the various ends 831, 832 of the variable connector 830. The contact portion 823 is located between a plurality of movable member support portions 822.

[0759] The contact portion 823 is formed by protruding a predetermined length in a direction away from the support portion 23 (i.e., in the opposite direction to the support portion 23). As a result, each end 831, 832 of the variable connector 830 can easily contact the contact portion 823.

[0760] The ends of the contact portion 823 in the width direction, i.e., the left-right direction in the illustrated embodiment, can be formed obliquely toward the support portion 23. That is, each end of the contact portion 823 can be configured such that its protruding length increases in the direction toward each other.

[0761] Therefore, each end 831, 832 of the variable connector 830 can easily enter the inside of the contact portion 823. In addition, each end 831, 832 of the variable connector 830 can easily detach from the outside of the contact portion 823.

[0762] The variable connector 830 establishes or de-energizes the different short-circuit blocks 820. The variable connector 830 is configured to contact or disconnect from one or more of the plurality of short-circuit blocks 820 that are adjacent to each other.

[0763] The variable connector 830 may be formed of a conductive material. In one embodiment, the variable connector 830 may be formed of copper (Cu).

[0764] The variable connector 830 can be provided in a flexible form. In one embodiment, the variable connector 830 can be provided in the form of a leaf spring.

[0765] Therefore, the first connector end 831 and the second connector end 832 can elastically deform when in contact with the contact portion 823. As a result, the contact state between the first connector end 831 and the second connector end 832 and the contact portion 823 can be stably maintained.

[0766] Furthermore, when the first connector end 831 and the second connector end 832 are separated from the contact portion 823, they can elastically deform and return to their original shape using the stored restoring force.

[0767] Specifically, the first connector end 831 and the second connector end 832 can store elastic force by deforming their shapes as they move along the inclined surface of the short-circuit block 820.

[0768] At this time, the short-circuit block 820 is formed into a trapezoidal shape. Therefore, as each connector end 831, 832 moves toward the surface facing the frame 20 (i.e., the surface between the two inclined surfaces), the magnitude of the elastic force stored in each connector end 831, 832 will increase.

[0769] If each connector end 831, 832 moves along the surface (i.e., the inclined surface) of the short-circuit block 820 and enters the other surface of the short-circuit block 820, the shortest distance between each connector end 831, 832 and the short-circuit block 820 will be further reduced. Therefore, the magnitude of the elastic force stored in each connector end 831, 832 will reach its maximum.

[0770] Thus, the variable connector 830 will deform and contact the short-circuit block 820 in a state of stored elastic force, and can move in a direction (i.e., left and right) along the extension of the moving member 810.

[0771] Therefore, even without providing additional elastic components, the contact reliability between the variable connector 830 and the short-circuit block 820 can be improved.

[0772] The variable connector 830 is coupled to the movable member 810. The variable connector 830 can slide together with the movable member 810 in the left-right direction.

[0773] The variable connector 830 can be located in one of two positions: a first position in which it can electrically contact one or more short-circuit blocks 820 configured adjacent to each other, and a second position in which it is separated from all short-circuit blocks 820 configured adjacent to each other.

[0774] In other words, the variable connector 830 may contact both short-circuit blocks 820 that are arranged adjacent to each other, or it may contact only one short-circuit block 820, or it may not contact either of the two short-circuit blocks 820.

[0775] The variable connector 830 is electrically connected to the short-circuit wire 821. Thus, the variable connector 830 is electrically connected to the blocking plate 640.

[0776] The variable connector 830 is formed by extending a predetermined length along the direction in which the movable member 810 extends, i.e., the left-right direction in the illustrated embodiment. The extension length of the variable connector 830 is preferably determined according to the distance between the short-circuit blocks 820.

[0777] Specifically, the extension length of the variable connector 830 is preferably formed to be greater than the distance between the opposing ends of the respective contact portions 823 of the adjacent short-circuit blocks 820.

[0778] That is, in Figure 20b In the illustrated embodiment, the extension length of the variable connector 830 is preferably formed to be greater than the distance between one end of the short-circuit block 820 that contacts the first connector end 831 of the variable connector 830 and one end of the short-circuit block 820 that contacts the second connector end 832.

[0779] Therefore, if the movable member 810 slides, the first connector end 831 and the second connector end 832 of the variable connector 830 can be electrically connected to different short-circuit blocks 820 respectively. Thus, different sub-modules 10 can be short-circuited simultaneously.

[0780] The variable connector 830 includes a first connector end 831 and a second connector end 832.

[0781] The first connector end 831 is defined as one end of the variable connector 830 along its length.

[0782] In the illustrated embodiment, the first connector end 831 is located on the left side of the variable connector 830. The first connector end 831 is bent toward the contact portion 823.

[0783] The second connector end 832 is defined as the other end of the variable connector 830 along its length. In the illustrated embodiment, the second connector end 832 is located on the right side of the variable connector 830. The second connector end 832 is located on the opposite side to the first connector end 831. The second connector end 832 is formed by bending towards the contact portion 823.

[0784] The first connector end 831 and the second connector end 832 are respectively continuous with the portion located between them and extending along the one direction (i.e., the left-right direction).

[0785] The first connector end 831 and the second connector end 832 may extend obliquely toward the frame 20 with respect to the portion. In one embodiment, the first connector end 831 and the second connector end 832 may extend at an obtuse angle to the portion.

[0786] Therefore, in the illustrated embodiment, when viewed from above, the cross-section of the variable connector 830 has a trapezoidal partial shape with the first connector end 831 and the second connector end 832 as the sloping sides and the portion of the variable connector 830 as the base.

[0787] The first connector end 831 and the second connector end 832 may be spaced apart from the frame 20. In addition, the first connector end 831 and the second connector end 832 may extend in a manner that contacts the short-circuit block 820.

[0788] In other words, the first connector end 831 and the second connector end 832 can be extended to a degree that do not contact the frame 20 but can contact the short-circuit block 820.

[0789] Therefore, if the variable connector 830 moves along the said direction (i.e., the left-right direction), the respective connector ends 831, 832 come into contact with the inclined surface of the short-circuit block 820 and are elastically deformed and can move along the said direction.

[0790] Therefore, if the variable connector 830 comes into contact with the short-circuit block 820, the variable connector 830 deforms and moves while storing elastic force. That is, the variable connector 830 and the short-circuit block 820 are in elastic contact.

[0791] Additionally, the side of the first connector end 831 and the second connector end 832 facing the frame 20, i.e. the front side in the illustrated embodiment, can be formed in an arc shape.

[0792] Therefore, if the moving member 810 moves in one direction (i.e., left and right), the first connector end 831 and the second connector end 832 can easily enter the inclined surface of the short-circuit block 820.

[0793] As a result, a certain level of contact pressure can be ensured between the variable connector 830 and the short-circuit block 820. This ensures the reliability of the contact between the variable connector 830 and the short-circuit block 820.

[0794] The first connector end 831 and the second connector end 832 can be inserted through into the end insertion slot 812, respectively.

[0795] The first connector end 831 is inserted through into a certain end insertion groove 812 and can make electrically contact with the contact portion 823 of a certain short-circuit block 820.

[0796] The second connector end 832 is inserted through into the other end insertion slot 812 and can make electrically contact with the contact portion 823 of the other short-circuit block 820.

[0797] It should be understood that the insertion slots 812 for the first connector end 831 and the second connector end 832, which are respectively inserted through, are arranged adjacent to each other.

[0798] Similarly, it should be understood that the short-circuit block 820 and the other short-circuit block 820, which are electrically contactable with the first connector end 831 and the second connector end 832 respectively, are also arranged adjacent to each other.

[0799] That is, the variable connector 830 slides between adjacent short-circuit blocks 820 and can simultaneously make energized contact with more than one of the adjacent short-circuit blocks 820.

[0800] exist Figure 20a In the illustrated embodiment, the variable connector 830 can make electrically contact only with one of the adjacent short-circuit blocks 820. That is, the second connector end 832 contacts a certain short-circuit block 820, while the first connector end 831 does not contact the short-circuit block 820.

[0801] In this state, the plurality of submodules 10 will not short-circuit with each other. Thus, the capacitor elements (not shown) provided in the plurality of submodules 10 can maintain different voltages from each other.

[0802] exist Figure 20b In the illustrated embodiment, the variable connector 830 is electrically contactable with each of the adjacent short-circuit blocks 820. That is, the second connector end 832 remains in contact with one of the short-circuit blocks 820, and the first connector end 831 is electrically contactable with another of the adjacent short-circuit blocks 820.

[0803] Although not illustrated, as described above, the variable connector 830 can be separated from all adjacent short-circuit blocks 820.

[0804] Thus, each short-circuit block 820 is energized via the variable connector 830. Similarly, the capacitor elements (not shown) of each submodule 10, which are energized and connected to each short-circuit block 820, are also energized.

[0805] In this state, the plurality of submodules 10 are short-circuited to each other. Therefore, the capacitor elements (not shown) disposed in the plurality of submodules 10 can be changed to the same voltage. In one embodiment, this state can be a grounded state.

[0806] The connecting member 840 is connected to the moving member 810 and converts the rotational motion of the short-circuit adjusting lever 854 into the linear motion of the moving member 810. The connecting member 840 is connected to both the moving member 810 and the short-circuit adjusting lever 854.

[0807] The connecting member 840 can be provided in any form that converts rotational motion into linear motion or vice versa. In one embodiment, the connecting member 840 can be a two-section connecting member or a three-section connecting member, etc.

[0808] The connecting member 840 includes: a rotating shaft portion 841, a first connecting member 842, and a second connecting member 843.

[0809] The rotating shaft 841 transmits the rotational motion of the short-circuit adjusting lever 854 to the first connecting member 842. The rotating shaft 841 is connected to the short-circuit adjusting lever 854 and the first connecting member 842. The rotating shaft 841 can rotate together with the short-circuit adjusting lever 854 and the first connecting member 842.

[0810] In the illustrated embodiment, the rotating shaft portion 841 is disposed at a predetermined distance from the vertical frame 21. In one embodiment, the rotating shaft portion 841 may be formed to extend vertically in the vertical direction, i.e., perpendicular to the ground.

[0811] The rotating shaft 841 can remain perpendicular to the ground by means of a support member, while being separated from the vertical frame 21 by a predetermined distance.

[0812] An insulating member 24 may be provided on the underside of the rotating shaft portion 841. The insulating member 24 may be configured to surround the outer side of the rotating shaft portion 841 adjacent to the indicating member 850. This can prevent safety accidents caused by high voltage that may occur when the user operates the indicating member 850.

[0813] The first connecting member 842 transmits the rotational motion of the rotating shaft 841 to the second connecting member 843.

[0814] A first connecting member 842 extends in one direction. One side of the extending direction of the first connecting member 842 is connected to the rotating shaft portion 841. In one embodiment, the first connecting member 842 may be connected through to the rotating shaft portion 841. The first connecting member 842 can rotate together with the rotating shaft portion 841.

[0815] The other side of the first connecting member 842 is rotatably connected to the second connecting member 843. If the first connecting member 842 rotates, the second connecting member 843 can move linearly.

[0816] The second connecting member 843 converts the rotational motion of the first connecting member 842 into linear motion and transmits it to the moving member 810.

[0817] The second connecting member 843 extends in one direction. In the illustrated embodiment, the second connecting member 843 extends in a left-right direction.

[0818] The second connector 843 is rotatably coupled to the first connector 842 on one side of its extension direction. If the first connector 842 is rotated, the second connector 843 can move linearly toward the moving member 810 or away from the moving member 810 (i.e., in the opposite direction to the moving member 810).

[0819] The other side of the extension direction of the second connecting member 843 is connected to the moving member 810. If the second connecting member 843 moves linearly, the moving member 810 can also move linearly in a direction away from the second connecting member 843 (i.e., in the opposite direction to the second connecting member 843) or in the direction of the second connecting member 843.

[0820] The indicator component 850 is operated by the user. The user can short-circuit multiple sub-modules 10 to the same voltage or release the short-circuit state by operating the short-circuit adjustment lever 854.

[0821] The indicating member 850 is disposed adjacent to the insulating member 24 provided on the lower side of the rotating shaft portion 841. This prevents electric shock accidents to users approaching the indicating member 850.

[0822] The indicator component 850 includes: an indicator housing 851, a first display portion 852, a second display portion 853, a short-circuit adjustment lever 854, and a pin component 855.

[0823] The indicator housing 851 forms the main body of the indicator member 850. In the illustrated embodiment, the central portion of the indicator housing 851 in the width direction is recessed. That is, when viewed from above, the indicator housing 851 may have a "C" shape.

[0824] The indicator housing 851 can be configured separately from the submodule 10. Therefore, the short-circuit adjustment lever 854 can be operated even without the user approaching the submodule 10. This prevents safety accidents caused by contact with the submodule 10.

[0825] A first display section 852, a second display section 853, a short-circuit adjustment lever 854, and a pin component 855 are provided on the upper side of the indicator housing 851.

[0826] The first display unit 852 and the second display unit 853 display whether the plurality of submodules 10 are in a short-circuit state. The user can visually identify whether a short-circuit state is present through the first display unit 852 and the second display unit 853.

[0827] The first display unit 852 and the second display unit 853 are arranged at a predetermined distance from each other. The predetermined distance can be determined based on the rotation radius and rotation angle of the short-circuit adjustment lever 854.

[0828] Specifically, the first display portion 852 can be located in a position where it is blocked by the short-circuit adjustment lever 854 when the short-circuit adjustment lever 854 rotates toward the first display portion 852. In one embodiment, when the short-circuit adjustment lever 854 is rotated to its maximum position, the first display portion 852 can be completely blocked by the short-circuit adjustment lever 854.

[0829] Similarly, the second display portion 853 can be located in a position where it is blocked by the short-circuit adjustment lever 854 when the short-circuit adjustment lever 854 rotates toward the second display portion 853. In one embodiment, the second display portion 853 can be completely blocked by the short-circuit adjustment lever 854 when the short-circuit adjustment lever 854 is rotated to its maximum position.

[0830] The first display unit 852 can be blocked when the plurality of sub-modules 10 are in one of the states of short circuit to each other and non-short circuit. Additionally, the second display unit 853 can be blocked when the plurality of sub-modules 10 are in another state of short circuit to each other and non-short circuit.

[0831] The first display unit 852 and the second display unit 853 can display a state different from the state formed by the rotation of the short-circuit adjusting lever 854.

[0832] That is, when the short-circuit adjustment lever 854 is rotated to block the first display unit 852, the state displayed on the second display unit 853 can be the energized state formed by the rotation of the short-circuit adjustment lever 854.

[0833] Similarly, when the short-circuit adjustment lever 854 is rotated to block the second display unit 853, the state displayed on the first display unit 852 can be the energized state formed by the rotation of the short-circuit adjustment lever 854.

[0834] That is, the first display unit 852 and the second display unit 853 are alternately obscured or exposed in various states. Thus, the user can use the exposure of the first display unit 852 and the second display unit 853 to determine whether each submodule 10 is in a short-circuit state.

[0835] The short-circuit adjustment lever 854 is operated to simultaneously short-circuit or de-short-circuit multiple sub-modules 10. The short-circuit adjustment lever 854 can be rotated automatically or manually.

[0836] The short-circuit adjustment lever 854 is rotatably coupled to the indicator housing 851. The coupling is achieved by a pin member 855.

[0837] The short-circuit adjusting lever 854 is connected to the rotating shaft 841. If the short-circuit adjusting lever 854 rotates, the rotating shaft 841 can also rotate. As described above, the rotation is transmitted to the moving member 810 through the first connecting member 842 and the second connecting member 843.

[0838] The short-circuit adjustment lever 854 is formed to extend to a predetermined length. In one embodiment, the short-circuit adjustment lever 854 may extend further than the distance between the pin member 855 and the first and second display portions 852, 853.

[0839] Thus, the short-circuit adjustment lever 854 can be rotated to block one of the first display section 852 or the second display section 853 while being rotatably coupled to the indicator housing 851 via the pin member 855.

[0840] Pin 855 rotatably engages short-circuit adjusting lever 854 to indicator housing 851. Pin 855 acts as the rotation axis of short-circuit adjusting lever 854.

[0841] The pin member 855 may be located at one end of the short-circuit adjusting lever 854 in the direction in which it extends. In one embodiment, the pin member 855 may be located at one end of the short-circuit adjusting lever 854 in the direction away from the first and second display portions 852, 853, i.e., in the opposite direction.

[0842] Reference Figure 21 (a) shows the state in which the short-circuit adjustment lever 854 is rotated clockwise, obscuring the first display 852. That is, the second display 853 is exposed.

[0843] Reference Figure 21 (b) shows the state in which the short-circuit adjustment lever 854 is rotated counterclockwise, obscuring the second display section 853. That is, the first display section 852 is exposed.

[0844] exist Figure 21 In the illustrated embodiment, it should be understood that the rotating shaft portion 841 is omitted from the illustration.

[0845] As the short-circuit adjusting lever 854 rotates, the rotating shaft 841 also rotates. The rotation is transmitted to the moving member 810 through the first and second connecting members 842 and 843, thereby causing the moving member 810 to slide to the left or right.

[0846] As described above, the variable connector 830 can make electrically contact with one or more of the adjacent short-circuit blocks 820.

[0847] When the variable connector 830 is in contact with a short-circuit block 820, each submodule 10 can maintain a different voltage from the others. When the variable connector 830 is in contact with all adjacent short-circuit blocks 820, each submodule 10 can be short-circuited and change to the same voltage.

[0848] The movement of the variable connector 830 is achieved by the moving member 810. The moving member 810 is slidably coupled to the support portion 23. The variable connector 830 is coupled to the moving member 810 and slides together with the moving member 810.

[0849] The movement of the movable component 810 is achieved by the rotation of the short-circuit adjusting lever 854 and the connecting component 840. The rotational motion of the short-circuit adjusting lever 854 is converted into linear motion by the connecting component 840, thereby causing the movable component 810 to slide.

[0850] The rotation of the short-circuit adjusting lever 854 is displayed via the first display unit 852 and the second display unit 853. Since one of the display units 852 and 853 is blocked by the short-circuit adjusting lever 854, the state corresponding to the rotation of the short-circuit adjusting lever 854 can be displayed.

[0851] Therefore, multiple sub-modules 10 can be easily short-circuited, and the user can easily monitor the short-circuit state.

[0852] 10. Description of the cooling flow path 900 according to an embodiment of the present invention

[0853] The submodule 10 of this embodiment includes a cooling flow path 900. The cooling flow path 900 is connected to the cooling plate 430 of the explosion-proof frame 400. The cooling flow path 900 transfers low-temperature cooling fluid to the cooling plate 430.

[0854] Additionally, the cooling flow path 900 receives the cooling fluid that flows inside the cooling plate 430 and has exchanged heat with the IGBT 440.

[0855] The cooling flow path 900 is provided in both the submodule 10 and the frame 20. Therefore, the cooling flow path 900 can also be considered as a structural element included in the frame 20. In the following description, for ease of explanation, the cooling flow path 900 will be described under the premise that it is a structural element of the submodule 10.

[0856] The term "low-temperature cooling fluid" as used in the following description refers to cooling fluid supplied from an external source that does not exchange heat with the IGBT 440.

[0857] The term "high-temperature cooling fluid" as used in the following description refers to the cooling fluid that has been heat-exchanged with the IGBT 440.

[0858] The following is for reference Figures 22 to 25 The cooling flow path section 900 of this embodiment of the invention will be described in detail.

[0859] The various piping units 911, 912, 921, 922, 931, 932, and 950 described below can be provided in any configuration capable of forming flow paths internally. In one embodiment, the main piping unit 910 can be a pipe component.

[0860] In the illustrated embodiment, the cooling flow path 900 includes: a main piping unit 910, a sub-piping unit 920, a branch piping unit 930, a piping connection unit 940, a valve connection piping 950, and a residual water collection unit 960.

[0861] The main piping unit 910 is connected to an external cooling fluid circulation device (not shown). Low-temperature cooling fluid can flow from the cooling fluid circulation device (not shown) to the main piping unit 910. Additionally, high-temperature cooling fluid can flow from the main piping unit 910 to the cooling fluid circulation device (not shown).

[0862] The main piping unit 910 is connected to the sub-piping unit 920. The low-temperature cooling fluid flowing to the main piping unit 910 can flow to the sub-piping unit 920. The high-temperature cooling fluid flowing to the sub-piping unit 920 can flow to the main piping unit 910.

[0863] The main piping unit 910 is connected to the branch piping unit 930. The branch piping unit 930 is connected to the sub-piping unit 920. Thus, the main piping unit 910 and the sub-piping unit 920 can be connected.

[0864] The main piping unit 910 extends in one direction, namely the left-right direction in the illustrated embodiment. Each end of the main piping unit 910 extending in that direction is mounted on the horizontal frame 22.

[0865] A main piping unit 910 can be provided in each frame 20. That is, as described above, a plurality of frames 20 can be provided and stacked. In this case, a main piping unit 910 can be provided in each stacked frame 20.

[0866] The main piping unit 910 includes: a main inlet pipe 911, a main outlet pipe 912, a main piping fixing component 913, a fastening component 914, and a clearance space 915.

[0867] Low-temperature cooling fluid flows from the cooling fluid circulation device (not shown) into the main inlet pipe 911. The main inlet pipe 911 is connected to the cooling fluid circulation device (not shown).

[0868] The low-temperature cooling fluid flowing into the main inlet pipe 911 flows to the sub-inlet pipe 921 via the branch inlet pipe 931. The main inlet pipe 911 is connected to the branch inlet pipe 931 and the sub-inlet pipe 921.

[0869] The main outlet pipe 912 and the main inlet pipe 911 are arranged adjacent to each other.

[0870] High-temperature cooling fluid flows from sub-outlet pipe 922 and branch outlet pipe 932 into main outlet pipe 912. Main outlet pipe 912 is connected to branch outlet pipe 932 and sub-outlet pipe 922.

[0871] The high-temperature cooling fluid flowing into the main outlet pipe 912 flows toward the cooling fluid circulation device (not shown). The main outlet pipe 912 is connected to the cooling fluid circulation device (not shown).

[0872] The main piping fixing component 913 supports the main inlet piping 911 and the main outlet piping 912 to the horizontal frame 22. The main piping fixing component 913 is located on the upper side of the horizontal frame 22.

[0873] There may be a plurality of main pipe fixing components 913. The plurality of main pipe fixing components 913 may be respectively installed on the left horizontal frame 22 and the right horizontal frame 22.

[0874] The main pipe fixing member 913 extends in one direction, namely the front-to-back direction in the illustrated embodiment. Furthermore, the length of the main pipe fixing member 913 in the width direction, namely the left-to-right direction in the illustrated embodiment, can be less than or equal to the width length of the horizontal frame 22.

[0875] A through hole is formed in the main piping fixing component 913. The main inlet piping 911 and the main outlet piping 912 are respectively connected to the through hole on one side along their length direction.

[0876] The main piping fixing component 913 includes: a first part, which is directly coupled to the horizontal frame 22; and a second part, which is located above the first part and coupled to the first part. That is, the first part is located between the second part and the horizontal frame 22.

[0877] The main piping fixing member 913 includes a fastening through portion 913a. The fastening through portion 913a is disposed adjacent to the two ends of the first part and the second part in the longitudinal direction. The fastening through portion 913a is formed through the pipe in the vertical direction at the location.

[0878] The fastening member (not shown) is fastened to the fastening through portion 913a. Thus, the first part and the second part can be joined together.

[0879] Specifically, the first part is attached to the horizontal frame 22 using fastening member 914, and the main inlet pipe 911 and the main outlet pipe 912 are connected through the through hole. Then, after the second part is placed in the first part, the main inlet pipe 911 and the main outlet pipe 912, the fastening member (not shown) can be fastened to the fastening through part 913a.

[0880] It should be understood that a portion of the through hole is formed in the first part, and the remainder of the through hole is formed in the second part.

[0881] Fastening member 914 secures main piping fixing member 913 to horizontal frame 22. Specifically, fastening member 914 passes through a fastening hole (not shown) formed in the first part of main piping fixing member 913.

[0882] There may be a plurality of fastening members 914. In the illustrated embodiment, two fastening members 914 are formed on the front side and the rear side of the main pipe fixing member 913, respectively, for a total of four.

[0883] The gap space 915 is the space formed between the first part and the second part of the main pipe fixing member 913. The gap space 915 is formed by separating the opposing surfaces of the first part and the second part by a predetermined distance. With the gap space 915 formed, the fastening member (not shown) is connected through the fastening through part 913a.

[0884] The gap space 915 can compensate for the increase in volume caused by the flow of cooling fluid in the main inlet pipe 911 or the main outlet pipe 912. In addition, the gap space 915 can buffer the vibration generated by the operation of the submodule 10, and can prevent the main inlet pipe 911 or the main outlet pipe 912 from being damaged by the vibration.

[0885] Sub-piping unit 920 connects main piping unit 910 and piping connection unit 940. Low-temperature cooling fluid flowing into main piping unit 910 can flow through sub-piping unit 920 to piping connection unit 940. In addition, high-temperature cooling fluid transferred from piping connection unit 940 can flow through sub-piping unit 920 to main piping unit 910.

[0886] Sub-piping unit 920 is connected to main piping unit 910. This connection is achieved by branch piping unit 930, which is connected to both main piping unit 910 and sub-piping unit 920. Additionally, sub-piping unit 920 is connected to piping connection unit 940.

[0887] The sub-piping unit 920 extends in one direction, namely the front-to-back direction in the illustrated embodiment. One side of the sub-piping unit 920, namely the rear end in the illustrated embodiment, is connected to the end of the branch piping unit 930. The other side of the sub-piping unit 920, namely the front end in the illustrated embodiment, is connected to the piping connection unit 940.

[0888] There can be a plurality of sub-piping units 920. The plurality of sub-piping units 920 can be located in each of the sub-modules 10.

[0889] Sub-piping unit 920 includes sub-inflow piping 921 and sub-outflow piping 922.

[0890] Sub-inlet pipe 921 is a channel through which cryogenic cooling fluid flows in from the main inlet pipe 911. The cryogenic cooling fluid can flow through sub-inlet pipe 921 and toward pipe connection unit 940.

[0891] Sub-outlet pipe 922 is a channel through which high-temperature cooling fluid flows in from piping connection unit 940. The high-temperature cooling fluid can flow through sub-outlet pipe 922 and into main outlet pipe 912.

[0892] A branch piping unit 930 is provided at the part where the sub-piping unit 920 and the main piping unit 910 are connected.

[0893] Sub-piping unit 930 is connected to main piping unit 910 and sub-piping unit 920. Sub-piping unit 930 is connected to main piping unit 910 and sub-piping unit 920 respectively.

[0894] The sub-pipe unit 930 can be configured as a joint structure. That is, the angle between the end of the sub-pipe unit 930 connected to the main piping unit 910 and the other end of the sub-pipe unit 930 connected to the sub-piping unit 920 can be changed.

[0895] In one embodiment, the angle between one end and the other end of the branch control unit 930 can be a right angle.

[0896] Thus, the main piping unit 910 and the sub-piping unit 920 can be connected to each other without changing their respective shapes.

[0897] There can be a plurality of sub-controller units 930. The plurality of sub-controller units 930 can be disposed in each sub-module of each sub-module 10.

[0898] Branch pipe unit 930 includes branch inflow pipe 931 and branch outflow pipe 932.

[0899] Branch inlet pipe 931 is a channel for the low-temperature cooling fluid flowing into the main inlet pipe 911 to flow into the sub-inlet pipe 921. Branch inlet pipe 931 is connected to both the main inlet pipe 911 and the sub-inlet pipe 921.

[0900] Branch outlet pipe 932 is a channel for the high-temperature cooling fluid flowing into sub-outlet pipe 922 to flow to the main outlet pipe 912. Branch outlet pipe 932 is connected to both the main outlet pipe 912 and the sub-outlet pipe 922.

[0901] Piping connection unit 940 connects to sub-piping unit 920 and valve connection piping 950. Piping connection unit 940 is connected to sub-piping unit 920 and valve connection piping 950 respectively.

[0902] In addition, the piping connection unit 940 supports the sub-piping unit 920 and the valve connection piping 950. This ensures that the connection between the sub-piping unit 920 and the valve connection piping 950 is stably maintained.

[0903] There may be a plurality of piping connection units 940. The plurality of piping connection units 940 may be disposed in each of the various submodules 10.

[0904] The piping connection unit 940 includes: an end connection member 941, a piping support member 942, and a piping fixing member 943.

[0905] End connection member 941 connects sub-piping unit 920 and valve connection piping 950 to connect the opposing ends of sub-piping unit 920 and valve connection piping 950. End connection member 941 is located between sub-piping unit 920 and valve connection piping 950.

[0906] The end connection member 941 is connected to the sub-piping unit 920 and the valve connection pipe 950, respectively. Cooling fluid can flow from the sub-piping unit 920 to the valve connection pipe 950 or in the opposite direction through the end connection member 941.

[0907] The end connecting member 941 includes a first end connecting member 941a and a second end connecting member 941b.

[0908] The first end connecting member 941a is connected to the end of the sub-piping unit 920. The first end connecting member 941a is in communication with the sub-piping unit 920.

[0909] like Figure 25 As shown, there may be a plurality of first end connecting members 941a. The plurality of first end connecting members 941a are respectively connected to the respective ends of the valve connecting pipe 950 of the sub-inflow pipe 921 and the sub-outflow pipe 922.

[0910] The second end connecting member 941b is connected to the end of the valve connecting pipe 950. The second end connecting member 941b is in communication with the valve connecting pipe 950.

[0911] like Figure 25 As shown, there may be a plurality of second end connecting members 941b. The plurality of second end connecting members 941b are respectively connected to each end of the sub-piping unit 920 of the valve inflow piping 951 and the valve outflow piping 952.

[0912] The opposing ends of the first end connecting member 941a and the second end connecting member 941b can be joined together. The first end connecting member 941a and the second end connecting member 941b are in communication with each other.

[0913] The piping support member 942 is configured to support the sub-piping unit 920 and the valve connection piping 950. The piping support member 942 is connected to the sub-piping unit 920 and the valve connection piping 950 respectively.

[0914] As described later, the sub-piping unit 920 can be secured using a piping fixing member 943 attached to the fixing frame 25. The piping support member 942 simultaneously supports the stably secured sub-piping unit 920 and the valve connection piping 950.

[0915] As a result, the valve connection piping 950 is also stably supported, thereby maintaining the connection state between the sub-piping unit 920 and the valve connection piping 950 stably.

[0916] In the illustrated embodiment, the piping support member 942 is located below the sub-piping unit 920 and the valve connection piping 950. The position of the piping support member 942 can be changed.

[0917] The piping support member 942 extends along the direction formed by the sub-piping unit 920, that is, in the front-back direction in the embodiment shown in the figure.

[0918] The pipe support member 942 can be formed of a material capable of achieving a specified shape deformation. In one embodiment, the pipe support member 942 can be formed of a synthetic resin material. Thus, even if vibrations occur due to the operation of the factor module 10, the pipe support member 942 can buffer the vibrations through shape deformation.

[0919] The piping support member 942 extends to the sub-piping unit 920 on one side of the direction in which it forms, i.e., the front side in the illustrated embodiment. The front end of the piping support member 942 bends toward the sub-piping unit 920.

[0920] A first clamp portion 942a is provided at the bent portion. The first clamp portion 942a includes a pair of curved surfaces facing each other. A predetermined space is formed between the curved surfaces. The side of the sub-piping unit 920 facing the end connecting member 941 is detachably inserted into the predetermined space.

[0921] The other side of the direction in which the piping support member 942 extends, i.e., the rear side in the illustrated embodiment, extends to the valve connection piping 950. The rear end of the piping support member 942 is bent toward the valve connection piping 950.

[0922] A second clamp portion 942b is provided at the bent portion. The second clamp portion 942b includes a pair of curved surfaces facing each other. A predetermined space is formed between the curved surfaces. The side of the valve connecting pipe 950 facing the end connecting member 941 is detachably inserted into the predetermined space.

[0923] Piping fixing component 943 fixes sub-piping unit 920. Piping fixing component 943 is combined with sub-piping unit 920.

[0924] The pipe fixing member 943 can be formed of a material capable of achieving a specified shape deformation. In one embodiment, the pipe fixing member 943 can be formed of a synthetic resin material. Thus, even if the factor module 10 vibrates during operation, the pipe fixing member 943 can buffer the vibration through shape deformation.

[0925] Piping fixing member 943 is attached to fixing frame 25. Specifically, the side of piping fixing member 943 facing capacitor assembly 100 is fastened to fixing frame 25.

[0926] Piping fixing member 943 extends from said side toward sub-piping unit 920. Piping fixing member 943 may include a vertical portion and an inclined portion.

[0927] The vertical portion is the part where the pipe fixing member 943 contacts and engages with the fixing frame 25. The vertical portion may extend along one side of the fixing frame 25, i.e., the rear side in the illustrated embodiment.

[0928] An inclined portion extends from the upper end of the vertical portion toward the sub-piping unit 920. The inclined portion extends at a predetermined angle to the vertical portion. In one embodiment, the predetermined angle may be an obtuse angle.

[0929] A first fixing portion 943a is formed on one side of the upper end of the inclined portion. The first fixing portion 943a includes a pair of curved surfaces facing each other. A predetermined space is formed between the curved surfaces. The side of the sub-inflow pipe 921 facing the end connecting member 941 is detachably inserted into the predetermined space.

[0930] A second fixing portion 943b is formed on the other side of the upper end of the inclined portion. The second fixing portion 943b includes a pair of curved surfaces facing each other. A predetermined space is formed between the curved surfaces. The side of the sub-outflow pipe 922 facing the end connecting member 941 is detachably connected to the predetermined space.

[0931] In summary, the sub-piping unit 920 and the valve connection piping 950 are fixed and supported by the piping connection unit 940. This ensures that the connection between the sub-piping unit 920 and the valve connection piping 950 is stably maintained.

[0932] Valve connection piping 950 connects piping connection unit 940 and cooling plate 430. Valve connection piping 950 is connected to piping connection unit 940 and cooling plate 430 respectively.

[0933] There may be a plurality of valve connection pipes 950. The plurality of valve connection pipes 950 are respectively connected to the inlet 431 and the pipe connection unit 940 and the outlet 432 and the pipe connection unit 940.

[0934] A valve connection piping 950 extends between the piping connection unit 940 and the cooling plate 430. There can be a plurality of valve connection piping 950s. A plurality of valve connection piping 950s can be provided in each of the various submodules 10.

[0935] The valve connection piping 950 includes valve inflow piping 951 and valve outflow piping 952.

[0936] The low-temperature refrigerant fluid flowing through sub-inflow pipe 921 flows into pipe 951 via inflow valve. The valve inflow pipe 951 communicates with the internal space of cooling plate 430 through inflow inlet 431.

[0937] The incoming low-temperature cooling fluid flows into the internal space of the cooling plate 430 through the inlet 431.

[0938] The valve outlet pipe 952 is positioned adjacent to the valve inlet pipe 951.

[0939] The high-temperature cooling fluid flowing in the cooling plate 430 and exchanging heat with the IGBT 440 flows into the valve outlet pipe 952. The valve outlet pipe 952 is connected to the internal space of the cooling plate 430 through the outlet 432.

[0940] The incoming high-temperature cooling fluid flows through the valve out of pipe 952 and into the main outlet pipe 912.

[0941] The residual water collection unit 960 collects residual water discharged from the piping connection unit 940. The residual water collection unit 960 may be located below the junction of the first end connection member 941a and the second end connection member 941b.

[0942] The residual water collection unit 960 is integrated with the capacitor assembly 100. Specifically, the residual water collection unit 960 is integrated with a support member disposed on the upper side of the capacitor assembly 100.

[0943] The residual water collection unit 960 can be detachably attached to the capacitor assembly 100. If the residual water collection unit 960 collects more than a specified amount of residual water, the user can drain the collected residual water by disassembling the residual water collection unit 960.

[0944] There may be a plurality of residual water collection units 960. The plurality of residual water collection units 960 may be disposed in each of the various submodules 10.

[0945] A residual water collection unit 960 extends upward from the capacitor assembly 100. Specifically, the residual water collection unit 960 includes: a first portion extending parallel to the upper side of the capacitor assembly 100; a second portion forming a predetermined angle with the first portion and extending upward from the first portion; and a third portion extending horizontally from the second portion.

[0946] The residual water collection unit 960 includes a residual water collection space 961. The residual water collection space 961 is a space for collecting residual water that falls from the piping connection unit 940. The residual water collection space 961 is formed by recessing a predetermined distance from the third portion.

[0947] As described above, the cooling flow path 900 provides cooling fluid circulation for cooling the IGBT 440. Low-temperature cooling fluid flows from the cooling fluid circulation device (not shown) through the main inlet pipe 911, branch inlet pipe 931, sub-inlet pipe 921, pipe connection unit 940, and valve inlet pipe 951 and flows into the cooling plate 430.

[0948] The low-temperature cooling fluid flowing into the cooling plate 430 flows within the internal space of the cooling plate 430 and exchanges heat with the IGBT 440. The heat generated in the IGBT 440 is transferred to the low-temperature cooling fluid. As a result, the low-temperature cooling fluid becomes a high-temperature cooling fluid.

[0949] High-temperature cooling fluid is discharged from cooling plate 430. The discharged high-temperature cooling fluid flows through valve outlet pipe 952, pipe connection unit 940, sub-outlet pipe 922, branch outlet pipe 932 and main outlet pipe 912 and flows into cooling fluid circulation device (not shown).

[0950] Therefore, the heat generated in the IGBT 440 can be dissipated through a cooling fluid. This maintains the IGBT 440 at an appropriate temperature, thereby improving the operational reliability of submodule 10.

[0951] Additionally, the sub-piping unit 920 and the valve connection piping 950 are supported by piping support member 942. Furthermore, the sub-piping unit 920 is fixed by piping fixing member 943.

[0952] Therefore, the connection of the various structural elements of the cooling flow path section 900 will not be broken by the vibration generated by the operation of the submodule 10.

[0953] A residual water collection unit 960 is provided on the lower side of the piping connection unit 940. The residual water collection unit 960 collects residual water that falls from the piping connection unit 940. As a result, the fallen residual water will not flow into the capacitor assembly 100 or the valve assembly 200.

[0954] Therefore, the structural elements of submodule 10 will not be damaged by the arbitrary outflow of cooling fluid.

[0955] The above description refers to preferred embodiments of the present invention. However, it should be understood that those skilled in the art can make various modifications and alterations to the present invention without departing from the spirit and scope of the invention as described in the appended claims.

[0956] 1: Modular Multi-level Converter

[0957] 10: Submodule

[0958] 20: Framework

[0959] 21: Vertical Frame

[0960] 22: Horizontal Frame

[0961] 23: Support section

[0962] 24: Insulating components

[0963] 25: Fixed frame

[0964] 100: Capacitor assembly

[0965] 110: Capacitor casing

[0966] 120: Capacitor Connector

[0967] 121: First capacitor connector

[0968] 122: Second capacitor connector

[0969] 200: Valve assembly

[0970] 210: Valve cover section

[0971] 220: Valve connector

[0972] 230: Input bus

[0973] 231: First input bus

[0974] 232: Second input bus

[0975] 240: Bypass switch

[0976] 250: Output bus

[0977] 260: Insulating housing

[0978] 261: The First Wall

[0979] 262: The Second Wall

[0980] 263: The Third Wall

[0981] 264: The Fourth Wall

[0982] 270: Insulation layer

[0983] 280: Printed Circuit Board

[0984] 300: Grounding part

[0985] 310: Grounding rod unit

[0986] 310a: First grounding rod unit

[0987] 310b: Second grounding rod unit

[0988] 311: Main body

[0989] 312: Joint

[0990] 313: Grounding conductor section

[0991] 314: Grounding conductor section

[0992] 315: Sealing section

[0993] 316: Resistor Section

[0994] 320: Grounding connector

[0995] 321: First grounding connector

[0996] 322: Second grounding connector

[0997] 330: Grounding protrusion

[0998] 331: First grounding protrusion

[0999] 332: Second grounding protrusion

[1000] 340: Grounding conductor section

[1001] 341: PCB grounding wire

[1002] 342: Shell grounding wire

[1003] 343: Busbar grounding conductor

[1004] 400: Explosion-proof frame section

[1005] 410: Housing Unit

[1006] 411: Protrusion

[1007] 412: Grounding rod through hole

[1008] 413: IGBT housing

[1009] 413a: First IGBT housing

[1010] 413b: Second IGBT housing

[1011] 413c: Partition wall section

[1012] 414: Inner wall part

[1013] 414a: First inner wall portion

[1014] 414b: Second inner wall portion

[1015] 415: Outer wall portion

[1016] 415a: First outer wall portion

[1017] 415b: Second outer wall portion

[1018] 416: Internal connecting slot

[1019] 416a: First internal connecting slot

[1020] 416b: Second internal communication slot

[1021] 417: External communication slot

[1022] 417a: First external communication slot

[1023] 417b: Second external communication slot

[1024] 418: Buffer Space Section

[1025] 418a: First buffer space section

[1026] 418b: Second buffer space section

[1027] 419: Corner

[1028] 420: Energized busbar

[1029] 421: First energized busbar

[1030] 422: Second energized busbar

[1031] 430: Cooling plate

[1032] 431: Inlet

[1033] 432: Outlet

[1034] 440: IGBT

[1035] 441: The First IGBT

[1036] 442: Second IGBT

[1037] 500: Track assembly

[1038] 510: Trolley Unit

[1039] 510a: Capacitor trolley unit

[1040] 510b: Valve trolley unit

[1041] 511: Main body of the stroller

[1042] 511a: Elastic component joint

[1043] 512: Extension

[1044] 513: Curved part

[1045] 513a: Hollow section of the trolley

[1046] 514: Wheel section

[1047] 514a: Wheel body section

[1048] 514b: Disk section

[1049] 514c: Cart joint

[1050] 520: Support Unit

[1051] 521: Horizontal section

[1052] 522: Vertical section

[1053] 530: Fastening Unit

[1054] 531: Lever fastening component

[1055] 532: Wheel fastening component

[1056] 540: Rail unit

[1057] 541: Main body of the track

[1058] 542: Track bend

[1059] 542a: First track bend

[1060] 542b: Second track bend

[1061] 542c: Third track bend

[1062] 542d: Side restraint section

[1063] 542e: Upper surface restriction section

[1064] 543: Track extension

[1065] 543a: Fastening hole

[1066] 544: Step section

[1067] 544a: Guiding Space Department

[1068] 545: Support section

[1069] 600: Anti-detachment part

[1070] 610: Stopper component

[1071] 611: Main body of the stop component

[1072] 612: Locking plate

[1073] 613: Wheel joint

[1074] 614: Elastic component connection hole

[1075] 620: Rotary bearing component

[1076] 630: Elastic Component

[1077] 631: Trolley connecting part

[1078] 632: Stop connection part

[1079] 640: Blocking plate

[1080] 641: Blocking fastening component

[1081] 650: Stop slot

[1082] 651: First Page

[1083] 652: Second page

[1084] 700: Install the separation unit

[1085] 710: Lever component

[1086] 711: Extension

[1087] 711a: First extension

[1088] 711b: Second Extension

[1089] 712: Handle

[1090] 720: Lever-linked component

[1091] 721: Lever insertion hole

[1092] 730: Lever Insertion Slot

[1093] 731: First lever insertion slot

[1094] 732: Second lever insertion slot

[1095] 800: Short Circuit Adjustment Section

[1096] 810: Moving Components

[1097] 811: Extended Main Body

[1098] 812: End Insertion Groove

[1099] 820: Short-circuit block

[1100] 821: Short-circuited conductor

[1101] 822: Support for moving components

[1102] 822a: Part 1

[1103] 822b: Part Two

[1104] 823: Contact Department

[1105] 830: Variable Connector

[1106] 831: First connector end

[1107] 832: Second connector end

[1108] 840: Connecting component

[1109] 841: Rotating shaft

[1110] 842: First connecting component

[1111] 843: Second connecting component

[1112] 850: Indicator component

[1113] 851: Indicator housing

[1114] 852: First Display Unit

[1115] 853: Second Display Unit

[1116] 854: Short-circuit adjustment lever

[1117] 855: Pin component

[1118] 900: Cooling flow path section

[1119] 910: Main piping unit

[1120] 911: Mainstream inlet piping

[1121] 912: Mainstream outgoing piping

[1122] 913: Main piping fixing components

[1123] 913a: Fastening through section

[1124] 914: Fastening components

[1125] 915: Gap Space Section

[1126] 920: Sub-piping unit

[1127] 921: Sub-inflow piping

[1128] 922: Sub outflow piping

[1129] 930: Sub-control unit

[1130] 931: Branch inflow piping

[1131] 932: Branch outlet piping

[1132] 940: Piping Connection Unit

[1133] 941: End connection component

[1134] 941a: First end connecting member

[1135] 941b: Second end connecting member

[1136] 942: Piping support components

[1137] 942a: First clip section

[1138] 942b: Second clip section

[1139] 943: Piping fixing components

[1140] 943a: First fixed part

[1141] 943b: Second fixing part

[1142] 950: Valve connection piping

[1143] 951: Valve flows into piping

[1144] 952: Valve outflow piping

[1145] 960: Residual Water Collection Unit

[1146] 961: Residual Water Collection Space

Claims

1. A submodule, in, include: A capacitor assembly that houses capacitor elements internally; The valve assembly is electrically connected to the capacitor assembly; A trolley unit, housing the capacitor assembly or the valve assembly; and A track unit, to which the trolley unit is slidably coupled, the track unit extending in one direction. The trolley unit includes: An extension portion is formed extending toward the track unit; and The wheel portion is rotatably coupled to one side of the extension portion and rotatably contacts the track unit. The track unit includes a track bend that extends toward the trolley unit and faces the other side of the extension. The orbital unit includes: The track body portion, from which the track bend portion extends; A track extension portion is formed extending from the track bend portion toward the wheel portion; and A support portion, continuously formed with the track extension portion, is located in a direction away from the track extension portion. The wheel portion is rotatably mounted on the support portion. A stepped portion is formed between the track extension and the support portion, the stepped portion being continuously formed with the track extension and the support portion respectively, and the side of the stepped portion facing the wheel portion is recessed. The wheel portion includes: The wheel body is rotatably mounted on the support portion; and The disc portion, located on the side of the wheel body facing the extension, has a diameter larger than that of the wheel body. The disc is housed in a space surrounded by the track extension, the step portion, and the support portion.

2. The submodule according to claim 1, wherein, The trolley unit includes: The arc-shaped portion protrudes in an arcuate manner from the other side of the extension toward the curved portion of the track. The curved portion of the track is formed by bending in a manner that surrounds the arc-shaped portion.

3. The submodule according to claim 2, wherein, The curved portion of the track is formed in an arc-shaped manner in a direction away from the arc-shaped portion.

4. The submodule according to claim 2, wherein, The trolley unit includes: The trolley body houses the capacitor assembly or the valve assembly, and the extension extends from the side of the trolley body opposite to the housed capacitor assembly or valve assembly. The curved section of the track extends to form such that the end of the curved section facing the trolley unit is located between the arc-shaped section and the trolley body section.

5. The submodule according to claim 2, wherein, The orbital unit includes: The main track section is located on the side of the trolley unit opposite to the capacitor assembly or the valve assembly, and the curved section of the track extends from the main track section. The curved portion of the track includes: The first track bend extends in an arcuate manner from the track body in a direction away from the arcuate portion; The second track bend extends in an arcuate manner from the first track bend in a direction away from the arcuate portion; and The third track bend extends in an arcuate manner from the second track bend in a direction away from the arcuate portion.

6. The submodule according to claim 5, wherein, A side limiting portion is formed on the side of the second track bend facing the arc-shaped portion in an arcuate manner, so as to form a predetermined angle with the surface of the arc-shaped portion.

7. The submodule according to claim 6, wherein, The side of the lateral limiting portion facing the arcuate portion is recessed in a direction away from the arcuate portion. The arc-shaped portion is formed protruding toward the side limiting portion.

8. The submodule according to claim 5, wherein, An upper surface limiting portion protruding toward the arc-shaped portion is provided on the side of the curved portion of the third track.

9. The submodule according to claim 8, wherein, The side of the upper surface limiting portion facing the arcuate portion is recessed in a direction away from the arcuate portion. The arc-shaped portion is formed protruding towards the upper surface limiting portion.

10. The submodule according to claim 1, wherein, The shortest distance between the capacitor assembly or the valve assembly and one side of the step portion is longer than the shortest distance between the capacitor assembly or the valve assembly and one side of the support portion facing the wheel portion.

11. The submodule according to claim 1, wherein, The shortest distance between the capacitor assembly or the valve assembly and one side of the step portion is longer than the shortest distance between the capacitor assembly or the valve assembly and one side of the track extension facing the capacitor assembly or the valve assembly.

12. The submodule according to claim 1, wherein, The shortest distance between the capacitor assembly or the valve assembly and the side of the support facing the wheel is longer than the shortest distance between the capacitor assembly or the valve assembly and the side of the track extension facing the capacitor assembly or the valve assembly.

13. The submodule according to claim 1, wherein, The disk portion is formed to have a predetermined thickness in the direction toward the track extension portion and the support portion. The stepped portion is formed such that the length extending between the track extension and the support portion is longer than the thickness of the disc portion.

14. The submodule according to claim 1, wherein, The outer periphery of the disc portion is separated from the side surface of the stepped portion by a predetermined distance.

15. The submodule according to claim 1, wherein, A trolley coupling portion is provided on the side of the disc facing the extension portion, and the trolley coupling portion is rotatably coupled to the extension portion.

16. A submodule, in, include: Trolley unit, valve assembly; A track unit, to which the trolley unit is slidably coupled, the track unit extending in one direction; and An anti-detachment component is provided on the trolley unit and the track unit, and is configured to prevent the trolley unit from arbitrarily detaching from the track unit. The anti-detachment part includes: A stop member, rotatably coupled to the trolley unit, extends in one direction; and A stop groove is recessed on one side of the track unit, and one side of the stop member is inserted into or disengaged from the stop groove. The stop slot includes: The first surface is disposed adjacent to one end of the track unit extending in the direction described above, and extends at a predetermined angle to the track unit's side surface; and The second surface is formed continuously from the first surface, extending in a direction away from one end of the track unit and extending from the first surface toward one side of the track unit. For one side of the track unit, the first side is formed at a more inclined angle than the second side.

17. The submodule according to claim 16, wherein, The trolley unit includes: The main body of the trolley extends in the direction formed by the extension of the track unit; and An extension portion is formed extending from the main body of the trolley toward the track unit. The stop member is attached to one side of the extension.

18. The submodule according to claim 17, wherein, The stop component includes: The main body of the stop member extends in the direction in which the stop member extends; and The locking plate is formed by bending at a predetermined angle from one side of the extending portion toward the extension portion in the extending direction of the main body of the stop member. If the stop member is inserted into the stop groove, the locking plate contacts either side surrounding the stop groove.

19. The submodule according to claim 18, wherein, The anti-detachment part includes: An elastic member is configured to be attached to both the stop member and the trolley unit to elastically support the stop member. The stop component includes: The elastic member engagement hole is formed through the hole on the opposite side from the side where the locking plate is located. One side of the elastic member is engaged with the elastic member engagement hole.

20. The submodule according to claim 19, wherein, The stop component includes: The wheel engagement portion, located between the locking plate and the engagement hole of the elastic member, is rotatably engaged with the extension portion. The elastic member is configured to apply an elastic force in the direction that causes the side of the stop member with the elastic member engagement hole to face toward the trolley body.

21. The submodule according to claim 20, wherein, The orbital unit includes: A support portion, housing a wheel portion rotatably coupled to the extension portion. The locking plate contacts one side of the support portion facing the main body of the trolley.

22. The submodule according to claim 16, wherein, The trolley unit includes: An extension portion is formed extending toward the track unit; and The wheel portion is rotatably coupled to the extension portion. The track unit includes a support for mounting the wheels. The stop groove is formed in the support portion.

23. The submodule according to claim 16, wherein, The trolley unit can move toward the stop groove until the stop member contacts the first surface.

24. The submodule according to claim 16, wherein, The stop groove is disposed adjacent to one end of the track unit extending in the aforementioned direction. The stop member, together with the trolley unit, moves along the track unit toward one end of the track unit or away from one end of the track unit. If the stop member is inserted into the stop groove, one side of the stop member contacts the first surface surrounding the stop groove at a position adjacent to the end of one side of the track unit.

25. The submodule according to claim 16, wherein, A blocking plate is provided at one end of the track unit adjacent to the stop groove. The blocking plate is configured to be attached to one end of the track unit and one end of the trolley unit respectively to restrict the movement of the trolley unit.

26. The submodule according to claim 25, wherein, The trolley unit includes: The valve assembly is housed in the main body of the trolley. An extension portion is formed extending a predetermined distance from the main body of the trolley; and The arc-shaped portion protrudes in an arcuate manner from the extension portion in the direction opposite to the anti-detachment portion. A hollow trolley portion is provided inside the arc-shaped portion, and the hollow trolley portion is formed through the track unit in the direction in which it extends, for fastening the blocking plate to the blocking fastening member of the trolley unit to the hollow trolley portion.

27. The submodule according to claim 25, wherein, The orbital unit includes: The track body extends along the direction formed by the track unit on the lower side of the trolley unit; and The track extension extends from the track body toward the stop member. A fastening hole is provided inside the track extension, and the fastening hole is formed through the track unit in the direction in which it extends, for fastening the blocking plate to the blocking fastening member of the track unit to the fastening hole.

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