Inverter and energy storage system comprising an inverter

Abstract

The present invention provides an inverter and an energy storage system including the inverter. The inverter includes: a main housing, a heat sink housing covering one side of the main housing and having a plurality of heat sinks, a circuit board unit disposed in an internal space defined by an assembly of the main housing and the heat sink housing, and a fixing member. The circuit board unit has one or more circuit boards configured for mutual conversion between DC power and AC power. The fixing member connects the main housing to an external storage device.

Description

Technical Field

[0001] This disclosure relates to an inverter and an energy storage system including the inverter. Background Technology

[0002] Generally speaking, an inverter is a device that converts direct current (DC) generated by an electrical power generation device (such as a solar panel) into alternating current (AC) and stores the electrical energy in a battery that serves as an energy storage device. It can also supply AC power to household appliances that consume AC power and the power grid, and maintain power quality by regulating the output voltage and frequency.

[0003] Inverters can be used as standalone devices connected to solar panels, the power grid, etc., but they can also be integrated with other external devices, such as energy storage systems (ESS), to serve as an integrated solution. This configuration can improve the efficiency of power conversion and storage. Summary of the Invention

[0004] This disclosure provides an inverter with improved ease of installation and replacement, as well as enhanced sealing performance, and an energy storage system including the inverter.

[0005] Additional aspects will be set forth in part in the description which follows, and in part will be apparent from the description, or may be learned by practicing the embodiments set forth in this disclosure.

[0006] Embodiments of this disclosure provide an inverter comprising: a main housing; a heat sink housing covering one side of the main housing and having a plurality of heat sinks; a circuit board unit disposed in an internal space defined by an assembly of the main housing and the heat sink housing, the circuit board unit having one or more circuit boards configured for mutual conversion between DC power and AC power; and a fixing member connecting the main housing to an external storage device.

[0007] In one embodiment, the main housing may include a guide protrusion formed to project from a surface of the main housing.

[0008] In one embodiment, the surface of the main housing may have a coupling groove, which is recessed inward to a predetermined depth, and the storage device can be connected to the coupling groove.

[0009] In one embodiment, the coupling groove may include: a first surface facing the storage device; and a second surface connected to the first surface and arranged to be inclined outward.

[0010] In one embodiment, the inverter may further include a washer disposed circumferentially on the inner surface of the coupling groove and capable of engaging with a connection protrusion formed to protrude from the surface of the storage device.

[0011] In one embodiment, the gasket may comprise a material capable of elastic deformation.

[0012] In one embodiment, the fixing member may include a guide hole that can be coupled to the main housing.

[0013] In one embodiment, the guide hole may include a plurality of guide holes, which are respectively coupled to the main housing and the storage device.

[0014] In one embodiment, the inverter may further include a support member disposed between the heat sink housing and the storage device to support the heat sink housing.

[0015] Furthermore, another embodiment of this disclosure provides an energy storage system comprising: an inverter; and a storage device, wherein the inverter comprises: a main housing; a heat sink housing covering one side of the main housing and having a plurality of heat sinks; a circuit board unit disposed in an internal space defined by an assembly of the main housing and the heat sink housing, the circuit board unit having one or more circuit boards configured to convert between direct current and alternating current; and a fixing member connecting the main housing to an external storage device; the inverter and the storage device are electrically connected to each other.

[0016] In one embodiment, the main housing may include a guide protrusion formed to project from a surface of the main housing.

[0017] In one embodiment, the surface of the main housing may have a coupling groove, which is recessed inward to a predetermined depth, and the storage device may be connected to the coupling groove.

[0018] In one embodiment, the energy storage system may further include a gasket arranged circumferentially on the inner surface of the coupling groove and capable of connecting to a connection protrusion formed to protrude from the surface of the storage device.

[0019] In one embodiment, the fixing member may include a guide hole that can be coupled to the main housing.

[0020] In one embodiment, the energy storage system may further include a support member disposed between the heat sink housing and the storage device to support the heat sink housing.

[0021] Other aspects, features, and advantages beyond those described above will become apparent from the accompanying drawings, claims, and the following detailed description of this disclosure. Attached Figure Description

[0022] The above and other aspects, features and advantages of certain embodiments of this disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings, wherein: Figure 1 A block diagram of an energy storage and distribution system according to an embodiment of the present disclosure is shown schematically. Figure 2 A block diagram illustrating an energy storage system and controller according to an embodiment of the present disclosure is provided. Figure 3 A schematic diagram illustrating the coupling between an inverter and a storage device according to an embodiment of the present disclosure; Figure 4 for Figure 3 Exploded perspective view of the inverter in the diagram; Figure 5 A diagram illustrating an inverter according to an embodiment of the present disclosure with its gates open; Figure 6 A bottom view of an inverter according to an embodiment of this disclosure; Figure 7 A rear view of an inverter according to an embodiment of this disclosure; Figure 8 for Figure 5 An enlarged view of part A in the image; Figure 9 For along Figure 5 A cross-sectional view taken along the midline V-V'; Figure 10 for Figure 7 A magnified view of part B in the image. Detailed Implementation

[0023] The embodiments will now be described in detail, examples of which are shown in the accompanying drawings, wherein the same reference numerals always denote the same elements. These embodiments may take different forms and should not be construed as limited to the description set forth herein. Therefore, the embodiments are described below with reference only to the accompanying drawings to explain various aspects.

[0024] Because this disclosure allows for various variations and numerous embodiments, specific embodiments will be shown and described in detail in the accompanying drawings. The advantages and features of this disclosure, as well as methods of implementing this disclosure, will become clear from the embodiments described below in detail with reference to the accompanying drawings. However, this disclosure is not limited to the embodiments disclosed below, but can be implemented in various forms.

[0025] The embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. When describing with reference to the drawings, the same or corresponding parts will be indicated by the same reference numerals, and therefore, the description of the provided parts will be omitted.

[0026] In the following embodiments, terms such as "first" and "second" are used only to distinguish one component from another, and these components shall not be limited by these terms.

[0027] In the following embodiments, singular words also include plural meanings, provided that this does not contradict the context.

[0028] In the following embodiments, the terms “comprising,” “including,” “having,” etc., as used herein indicate the presence of the said feature or component, but do not exclude the presence or addition of one or more other features or components.

[0029] In the following embodiments, when an element such as a layer, region, or component is referred to as being "above," "in front of," "behind," or "below" another element, it may include situations where the elements are in direct contact, as well as situations where there may be intermediate elements.

[0030] For ease of description, the sizes of the components in the figures may be enlarged or reduced. For example, for ease of description, the dimensions and thicknesses of each element shown in the figures are arbitrarily provided, and therefore, this disclosure is not necessarily limited to those dimensions and thicknesses shown in the figures.

[0031] Furthermore, it should be understood that some elements may be omitted for simplification purposes, or when it is deemed sufficient or necessary to describe them, only a portion of the elements may be shown, or the elements may be schematically represented in the accompanying drawings.

[0032] In the following embodiments, when an element is referred to as being “connected” to another element, this may include cases where the element is directly connected as well as cases where the element is indirectly connected to other elements between the elements.

[0033] Figure 1 A block diagram of an energy storage and distribution system according to an embodiment of the present disclosure is shown schematically.

[0034] Reference Figure 1 The energy storage and distribution system 1 can convert direct current (DC) electricity generated by the power generation device 10 (such as a solar panel) into alternating current (AC) electricity and supply AC electricity to the load 40, the power grid 50, etc., or it can store the power generated by the power generation device 10 in the storage device 200 and then convert and supply the stored power as needed.

[0035] The power generation device 10 refers to a device that generates electrical energy by converting various forms of energy, and can generate electrical energy in various ways according to the type of energy.

[0036] For example, the power generation device 10 may be a solar panel that converts sunlight into electricity using solar panels. However, this disclosure is not limited thereto, and the power generation device 10 may be provided as various devices, such as wind power generation devices or hydropower generation devices.

[0037] The energy storage system 20 stores electricity generated by the power generation device 10 (e.g., a solar panel) and converts the stored DC electricity into AC electricity to supply the AC electricity to an external destination. The energy storage system 20 may include an inverter 100 and a storage device 200.

[0038] Inverter 100 can be connected to or integrated with storage device 200. Therefore, DC power generated from power generation device 10 can be stored in storage device 200 and then converted into AC power by inverter 100 as needed to supply load 40, power grid 50, etc.

[0039] However, this disclosure is not limited thereto. Within the scope of technologies capable of converting between AC and DC power from an external power source, the inverter 100 may be connected to or integrated with various components of an energy storage and distribution system, such as converters, battery management systems (BMS), or power management systems.

[0040] The controller 30 is electrically connected to the energy storage system 20 and can receive operating data from the energy storage system 20 to monitor its operating status and control its operating conditions. In some embodiments, the controller 30 can monitor the operating status of the inverter 100 in real time. In some embodiments, the controller 30 can receive information from the inverter 100 regarding various parameters of the power generation device 10, such as total power generation or AC voltage. In some embodiments, the controller 30 can generate an alarm to notify the user when a defect or malfunction occurs during the operation of the inverter 100.

[0041] Load 40 is a general term relating to any electrical-consuming device. Examples of load 40 may include household appliances, heating and cooling systems, lighting and equipment in commercial facilities, and machinery in industrial sites. Typically, since load 40 uses AC power, the DC power introduced to charge storage device 200 is converted to AC power by inverter 100 and then supplied to load 40.

[0042] The power grid 50 can be defined as a power grid for transmitting and distributing AC electricity converted by the inverter 100 to supply AC electricity to consumers. The power grid 50 can be connected to the distribution network of a house or building to distribute electrical energy supplied from the power generation device 10 or the energy storage system 20.

[0043] In other words, the energy storage and distribution system 1 according to the embodiments of this disclosure can be a power grid, in which electrical energy generated by the power generation device 10 enters the energy storage system 20 to be stored in the storage device 200, or the stored electrical energy is converted and supplied to the load 40 and the power grid 50 for final delivery to consumers.

[0044] Figure 2 A block diagram illustrating an energy storage system 20 and a controller 30 according to an embodiment of the present disclosure is shown for illustrative purposes.

[0045] Reference Figure 2 Multiple energy storage systems 20 may be provided, and the multiple energy storage systems are connected to each other. The number of energy storage systems 20 is not limited to a specific number, and can be configured differently depending on the installation location of the energy storage systems 20, etc. However, for the sake of convenience, the following description will focus on an embodiment in which three energy storage systems 20a, 20b, and 20c are connected to the controller 30.

[0046] In one embodiment, the energy storage system may include a first energy storage system 20a, a second energy storage system 20b, and a third energy storage system 20c, which may be electrically connected to each other. For example, the first energy storage system 20a, the second energy storage system 20b, and the third energy storage system 20c may be connected to each other via cables to transmit electrical signals or allow current to flow between them.

[0047] According to embodiments of the present disclosure, the controller 30 can be connected to the first energy storage system 20a, the second energy storage system 20b, and the third energy storage system 20c via wired or wireless communication.

[0048] When the controller 30 is connected to the first energy storage system 20a, the second energy storage system 20b, and the third energy storage system 20c via a wired connection, the controller 30 can connect to the storage device of any one of the first energy storage system 20a, the second energy storage system 20b, and the third energy storage system 20c, and can receive operating data from the other storage devices.

[0049] In another embodiment, the controller 30 may be connected to each of the first energy storage system 20a, the second energy storage system 20b, and the third energy storage system 20c to receive their respective operating data.

[0050] In some embodiments, the controller 30 may be wirelessly connected to the energy storage system 20 to receive operational data via wireless communication.

[0051] Because the controller 30 monitors information related to the energy storage system 20 and the inverter 100 in real time and adjusts operating conditions, it can respond immediately to problems that occur during the operation of the inverter 100 and output power consumption in real time, thereby performing the process of generating, storing and distributing electrical energy more efficiently.

[0052] Figure 3 This diagram illustrates the coupling between an inverter and a storage device according to an embodiment of the present disclosure.

[0053] Reference Figure 3 According to embodiments of the present disclosure, the energy storage system 20 may include an inverter 100 and a storage device 200.

[0054] Inverter 100 and storage device 200 can be electrically connected to each other via a DC connector or an AC connector (not shown). Therefore, inverter 100 can receive DC power or convert received DC power into AC power to transmit AC power to an external destination.

[0055] In other words, the inverter 100 can be electrically connected to the storage device 200 to supply power to the storage device 200, or receive power from the storage device 200 to output power to an external destination.

[0056] Inverter 100 can be coupled to storage device 200 in the vertical direction. In this specification, the term "vertical direction" can refer to the z-axis direction. Figure 3 The vertical direction and the longitudinal direction of the storage device 200.

[0057] In some embodiments, the inverter 100 may be connected to a connection protrusion 201 of the storage device 200. The connection protrusion 201 may be in the shape of a partition wall surrounding a predetermined area in the storage device 200 opposite to the inverter 100.

[0058] Here, connecting cables, wires, or connectors used to electrically connect the inverter 100 to the storage device 200 can pass through the surface of the storage device 200 surrounded by the connecting protrusion 201 to connect to the connection terminals inside the inverter 100. The coupling method between the connecting protrusion 201 and the inverter 100 will be described in detail below.

[0059] Storage device 200 may be an electrical storage device for storing electrical energy supplied from external power generation device 10.

[0060] Therefore, although this specification describes storage device 200 as an example of an electrical storage device, this disclosure is not limited thereto, and various modifications can be made to other external devices within the scope of technology that storage device 200 can be electrically connected to inverter 100 capable of converting between DC power and AC power.

[0061] Figure 4 yes Figure 3 An exploded perspective view of the inverter.

[0062] Reference Figure 4 The inverter 100 is capable of converting between DC and AC power supplied from an external source, and may include a main housing 110, a safety cover 120, a circuit board unit 130, a heat dissipation housing 140, and a cover 150.

[0063] The main housing 110, safety cover 120, circuit board unit 130, and heat sink 140 can be coupled to each other along a first direction. In this specification, the term "first direction" may refer to the x-axis direction, and the term "second direction" may refer to the y-axis direction.

[0064] The main housing 110 can be connected to the storage device 200 via a fixing member GM. A heat sink 140 covers one side of the main housing 110 and has multiple heat sinks 143. The heat sink defines an internal space in which the circuit board unit 130 can be arranged.

[0065] In this specification, the term "internal space" may refer to the space defined by the assembly of the main housing 110 and the heat sink 140. In other words, the internal space may refer to the space surrounded by the main housing 110 and the heat sink 140.

[0066] In some embodiments, a safety cover 120 covering the circuit board unit 130 may be disposed in the interior space. The safety cover 120 may be disposed on one side of the circuit board unit 130 and may protect multiple circuit boards from the external environment, thereby preventing the circuit boards from being exposed to the external environment when the inverter 100 is installed, and reducing the possibility of the inverter 100 malfunctioning or failing.

[0067] In some embodiments, the safety cover 120 can physically isolate components through which current flows from workers, thereby preventing electric shock accidents and improving the safety of the working environment.

[0068] The circuit board unit 130 can be arranged in the internal space and can have at least one circuit board capable of converting between DC power and AC power.

[0069] In one embodiment, the circuit board unit 130 may include a first board 131, a second board 132, a third board 133, and a fourth board 134. Here, these circuit boards may be referred to as a "circuit board" or "multiple circuit boards".

[0070] Each circuit board can be provided as a filter board, motherboard, battery management and protection system (BMPS) board, switching-mode power supply (SMPS) board, etc., and may include power semiconductors such as metal-oxide-semiconductor field-effect transistors (MOSFETs) or insulated-gate bipolar transistors (IGBTs), control circuits, sensors, printed circuit boards, etc. Here, the individual circuit boards can be stacked and arranged within an internal space, or they can be arranged spaced apart from each other on the same plane.

[0071] The motherboard MP can be arranged between the safety cover 120 and the heat sink 140. The motherboard MP supporting at least one circuit board of the circuit board unit 130 can separate the internal space.

[0072] Multiple circuit boards can be arranged on opposite sides of the motherboard MP. In other words, the circuit boards can be arranged in multiple spaces separated by the motherboard MP. Therefore, although not shown in the accompanying drawings, the circuit boards can be arranged not only in the space between the safety cover 120 and the motherboard MP, but also in the space between the motherboard MP and the heat sink 140.

[0073] Therefore, the multiple circuit boards included in the circuit board unit 130 can be stacked along the first direction within the internal space of the inverter 100.

[0074] The heat sink 140 can be formed to protrude along a first direction. Since the heat sink 140 is formed to protrude outward, the inner side of the protruding area is formed in the form of a concave surface, thereby providing internal space.

[0075] At least one circuit board can be accommodated in the space surrounded by the heat sink 140 and the motherboard MP. Therefore, the multiple circuit boards included in the circuit board unit 130 can be completely surrounded by the main housing 110, the safety cover 120 and the heat sink 140.

[0076] The heat sink 140 may have multiple heat sinks 143 and can effectively dissipate the heat generated from the circuit board unit 130 to the outside. Therefore, the heat sink 140 can prevent excessive heat from accumulating inside the inverter 100, which could lead to performance degradation of the circuit board or defects during operation.

[0077] The cover 150 surrounds the heat sink housing 140 and is connected to the main housing 110, and can be arranged to cover the side and top surfaces of the heat sink housing 140, thereby protecting the heat sink housing 140 from external influences.

[0078] In some embodiments, the cover 150 can physically prevent users or staff from contacting the surface of the heat sink 140 (the surface of the heat sink 140 reaches a high temperature due to heat generated from the internal circuit board), thereby protecting users and staff.

[0079] The lower portion of the cover 150 can be connected to the upper surface of the storage device 200. In some embodiments, the areas corresponding to the corners of the lower portion of the cover 150 can be fastened to the storage device 200 by fastening members FM. Therefore, the inverter 100 can be securely fixed to the storage device 200.

[0080] The fastening member FM is fastened to the cover 150, and the cover 150 can be connected to the storage device 200.

[0081] Multiple fastening components FM can be provided. Some of the multiple fastening components FM can be fixed to the rear surface portion of the body 111 by welding to secure the four corners of the cover 150 to the main housing 110, and more specifically, to the body 111.

[0082] In some embodiments, other fastening members in the plurality of fastening members FM may be welded to the storage device 200 to secure the opposite lower portion of the cover 150. Figure 4 (The lower side of the middle) is fixed to the storage device 200.

[0083] Because the main housing 110 is connected to the cover 150 via fastening member FM, and the cover 150 is connected to the storage device 200, the main housing 110 can be indirectly fixed to the storage device 200.

[0084] Inverter 100 may also include a stationary component GM and a support component SM.

[0085] The fixing member GM that connects the main housing 110 to the storage device 200 can be formed to extend in the vertical direction, such that one side of the fixing member can be connected to the main housing 110 and the other side of the fixing member can be connected to the storage device 200.

[0086] Therefore, even when the door 112 is opened or removed, the fixing member GM can retain the front of the main body 111 and the storage device 200. Figure 4 The left side of the middle is fixed.

[0087] In some embodiments, when the inverter 100 and the storage device 200 are connected to each other, the fixing member GM can provide guidance so that each component can be aligned vertically with a common centerline. This will be described in detail below.

[0088] The support member SM is arranged between the heat dissipation housing 140 and the storage device 200. One surface of the support member SM can contact the storage device 200, and the opposite surface can contact the heat dissipation housing 140.

[0089] Therefore, the support member SM can stably support the lower portion of the heat sink housing 140 protruding in the first direction, and can space the heat sink housing 140 and the storage device 200 apart from each other at a preset interval.

[0090] Multiple support members SM can be provided, and the multiple support members SM can be arranged on opposite sides of the heat dissipation housing 140 to distribute the weight of the heat dissipation housing 140, thereby providing more stable support.

[0091] The upper surface of the supporting member SM can be ( Figure 4 The upper side of the inverter 100 is masked to serve as a grounding connection between the heat dissipation housing 140 and the storage device 200. Therefore, the support member SM can physically support the inverter 100 while improving the electrical stability of the entire energy storage system 20.

[0092] Figure 5 A diagram illustrating an inverter according to an embodiment of the present disclosure with its gates open. Figure 6 This is a bottom view of an inverter according to an embodiment of the present disclosure, and Figure 7 This is a rear view of an inverter according to an embodiment of the present disclosure.

[0093] Reference Figures 5 to 7 The main housing 110 may include a main body 111, a door 112, and a safety bar 113.

[0094] The main housing 110 forms an internal space by assembling with the heat sink housing 140, and the main housing 110 is installed in the storage device 200; the circuit board unit 130 and the safety cover 120 can be arranged in the internal space of the main housing 110. However, for ease of explanation, Figure 5 The structure of the circuit board unit 130 and the safety cover 120 is omitted.

[0095] The main body 111 may have an interior space, and an opening 1111 is provided on one of its surfaces. Here, the opening 1111 may be covered by a door 112.

[0096] The door 112 is rotatably connected to the body 111 and can cover the opening 1111; the area of ​​the door 112 can correspond to the surface of the body 111 on which the opening 1111 is formed.

[0097] Therefore, as needed, the operator can rotate the door 112 up and down to open and close the opening 1111, or attach the door 112 to or remove it from the main body 111 to perform the tasks required for installing and replacing the inverter 100.

[0098] In this document, when door 112 does not cover opening 1111, is supported by safety bar 113, and is positioned at a preset angle relative to body 111, door 112 is considered "open" (e.g., Figure 5 (as shown), and when door 112 covers opening 1111, door 112 is considered "closed" (as shown). Figure 6 (As shown).

[0099] The safety bar 113, positioned between the main body 111 and the door 112, can support the door 112 to allow it to remain open.

[0100] One side of the safety bar 113 is rotatably connected to the body 111. In some embodiments, a slotted rod hole (not shown) may be formed on one side of the safety bar 113. Here, the safety bar 113 may be constrained by a separate pin to a fixed bracket (not shown) arranged on the surface of the body 111.

[0101] The rod hole extends in the longitudinal direction of the safety rod 113, and the safety rod 113 can not only rotate relative to the main housing 110, but also slide in the vertical direction.

[0102] Therefore, when the safety bar 113 is suspended on the bar support 1123 and the door 112 forms a preset angle with respect to the main housing 110, the safety bar 113 can slide downward in the direction of gravity to be fixed in place.

[0103] Therefore, when door 112 is partially moved due to external forces (such as a worker's head hitting the door or wind lifting the door), the risk of door 112 falling and injuring the worker can be physically prevented, and the safety of the working environment can be ensured.

[0104] The safety bar 113, which is not connected to the other side of the body 111, can move freely to support the door 112 when it is opened or closed, or it can be located on the surface of the body 111.

[0105] The shielding member EG can be arranged around the perimeter of the opening 1111 of the body 111. The shielding member EG can block electromagnetic waves, thereby preventing electromagnetic waves from being emitted to the outside, which are generated by the current flowing through the circuit board unit 130 arranged in the internal space of the body 111.

[0106] The shielding component EG can include various materials. For example, the shielding component EG can include aluminum, steel, polycarbonate, acrylonitrile butadiene styrene (ABS), silicone, rubber, etc., and can be arranged along the periphery of the opening 1111. Various modifications can be made to the material within the technical range that the material can block electromagnetic waves emitted from the circuit board unit 130.

[0107] The guide protrusion 1112 may be formed to protrude from the surface of the main housing 110. In some embodiments, the guide protrusion 1112 may be disposed on the lower side of the main housing 110 adjacent to the storage device 200. Figure 5 (on the lower side of the middle).

[0108] A guide protrusion 1112 protruding in the first direction can be arranged on the surface of the body 111 where the opening 1111 is formed. The guide protrusion 1112 can be connected to the fixing member GM to align the inverter 100 and the storage device 200 in a straight line.

[0109] In some embodiments, a separate protrusion may be formed on the surface of the storage device 200 to be arranged on the same plane as the guide protrusion 1112, and the fixing member GM may be mated and coupled to both the guide protrusion 1112 and the protrusion of the storage device 200 to make the two devices linearly aligned.

[0110] A cable hole 1113 may be formed on the surface of the main body 111, through which a cable for electrically connecting the inverter 100 to an external device may pass. Here, the cable passing through the cable hole 1113 may be any type of cable, such as a power cable or a communication cable.

[0111] Multiple cable holes 1113 can be arranged vertically on the surface of the body 111. Therefore, multiple cables connected to the inverter 100 can simultaneously pass through the body 111 to connect to the internal circuit board unit 130 or supply power.

[0112] In some embodiments, cable holes 1113 may be arranged on opposite sides of the body 111. Therefore, cables can selectively enter the left or right side of the inverter 100 for easy connection to a target.

[0113] The plug PL is coupled to the cable hole 1113 to seal the cable hole 1113 from the outside, and can be formed to have an outer diameter that is larger than the inner diameter of the cable hole 1113.

[0114] By using the plug PL, the gap between the cable and the cable hole 1113 can be completely filled, and external contaminants, moisture, etc. can be prevented from entering the internal space.

[0115] When a cable connection is required, the plug PL can be removed. A separate connector can then be inserted into the cable hole 1113 where the plug PL has been removed. For example, the connector could be a conduit connector.

[0116] The connector, which carries a cable, can be inserted into the cable hole 1113 to seal the cable hole 1113. This prevents dust, moisture, and other external contaminants from entering the interior space. In some embodiments, the cable, mounted on the connector and having passed through the cable hole 1113, can be securely fixed in place and connected to the circuit board.

[0117] Reference Figure 5 and Figure 6 The surface of the main housing 110 may have a coupling groove 1114, which is recessed inward to have a preset depth, and the storage device 200 may be connected to the coupling groove 1114.

[0118] In some embodiments, a coupling groove 1114 may be formed on the surface of the main housing 110 facing the storage device 200. A coupling hole 1114h may be formed in the coupling groove 1114, and the coupling hole 1114h may be coupled to a plurality of connectors, wires, cables, etc. that can electrically connect the inverter 100 to the storage device 200.

[0119] Multiple cables extending from the storage device 200 can pass through the coupling hole 1114h and enter the inverter 100 to be directly coupled to the circuit board.

[0120] In some embodiments, a connector connected to a cable inside the inverter 100 can be coupled to a coupling hole 1114h. Here, the connector of a cable extending from the storage device 200 can be physically connected to a connector of the inverter 100, which is coupled to the coupling hole 1114h, to electrically connect the two devices to each other.

[0121] In other words, the coupling slot 1114 can be a space for electrically or physically connecting cables extending from the inverter 100 and the storage device 200 to each other.

[0122] The connection protrusion 201 of the storage device 200 may be located inside the recess of the coupling slot 1114. The connection protrusion 201 protrudes from the surface of the storage device 200 toward the inverter 100 and may be formed at a position corresponding to the position of the coupling slot 1114.

[0123] Therefore, when the inverter 100 is placed on the upper surface of the storage device 200, the connecting protrusion 201 can be inserted into the coupling groove 1114 with a preset depth.

[0124] Refer again Figure 3The connecting protrusion 201 can be in the shape of a partition wall with a preset height and is formed as an inner peripheral surface corresponding to the coupling groove 1114.

[0125] Reference Figure 6 The gasket GK is arranged along the inner circumferential surface of the coupling groove 1114 and can seal the gap between the surfaces of the inverter 100 and the storage device 200 to prevent pollutants, moisture and other substances from the external environment from being introduced into the device.

[0126] The outer circumference of the gasket GK can be smaller than the inner circumference of the coupling groove 1114, and a hollow part can be formed inside the gasket GK, through which cables, wires, connectors, etc. can pass.

[0127] The gasket GK may comprise a material with elastic restoring force. In other words, the gasket GK may comprise a compressible material and may be in close contact with the inside of the coupling groove 1114. Furthermore, when the inverter 100 is mounted on the storage device 200, the gasket GK may be compressed by the connecting protrusion 201 to fill any gaps that may appear in the coupling groove 1114 during assembly.

[0128] Therefore, the interior of the coupling groove 1114 can be completely isolated from the outside, and can prevent foreign objects from being introduced into the inverter 100, thereby improving the sealing performance of the inverter 100.

[0129] Reference Figure 5 and Figure 6 A door 112, which is rotatably connected to the body 111 and can cover the opening 1111, can prevent the circuit board unit 130 inside the body 111 from being exposed to the outside.

[0130] In some embodiments, the door 112 may be hinged to the body 111 to be rotatable within a preset radius. Therefore, when the inverter 100 needs to be installed, the operator can rotate and open the door 112 to expose the internal terminals, etc., and after the installation is completed, the operator can rotate the door 112 again to close the door 112 so that the interior is not exposed.

[0131] However, this disclosure is not limited thereto, and during the installation of the inverter 100, the operator may remove the door 112 to perform necessary tasks and reinstall the door 112 after the tasks are completed.

[0132] The door 112 may have an area corresponding to the surface of the body 111 on which the opening 1111 is formed, and the door 112 may completely cover the opening 1111 to prevent external contaminants from being introduced into the body 111 through the opening 1111.

[0133] Door 112 may include an extension tab 1121 connected to storage device 200. The extension tab 1121 is a region extending toward storage device 200 when door 112 is closed, and the extension tab 1121 may contact the surface of storage device 200. In some embodiments, the extension tab 1121 may be arranged at an end portion of door 112 in a second direction.

[0134] The extension tab 1121 may be a region that is fastened to the storage device 200, and may have fixing holes 1121h arranged to be spaced apart from each other at a predetermined interval. The fixing holes 1121h may be arranged to be spaced apart from each other on the extension tab 1121 in a second direction.

[0135] The extension tab 1121 can contact the surface of the storage device 200 when the door 112 covers the opening 1111, i.e., when the door 112 is closed. Here, the position of the fixing hole 1121h can correspond to the position of the hole formed in the storage device 200. In this state, the door 112 and the storage device 200 can be fastened together using fastening elements such as nuts or screws.

[0136] When the extension tab 1121 is secured to the storage device 200 while the door 112 is closed, the inverter 100 can be stably secured to the storage device 200, and when the door 112 is closed and secured, the circuit board unit 130 inside the body 111 can be prevented from being exposed to the outside.

[0137] Multiple extension tabs 1121 may be provided. In an alternative embodiment, the extension tabs 1121 may be arranged on opposite sides of the door 112.

[0138] Reference Figure 4 and Figure 5 The multiple extended tabs 1121 can be arranged to be spaced apart from each other at a predetermined interval. The recess 1122 refers to the gap formed by the multiple extended tabs 1121 arranged to be spaced apart from each other, and can be a region that does not extend from the door 112.

[0139] When the door 112 is closed, the retaining member GM can be positioned in the recess 1122, which serves as a gap between the extending tabs 1121. In some embodiments, when the door 112 is closed and secured to the storage device 200, the side of the retaining member GM connected to the inverter 100 can be covered by the door 112, and the other side of the retaining member GM connected to the storage device 200 can be positioned in the recess 1122.

[0140] When the extension tab 1121 is fastened to the storage device 200 and the opposite side of the fixing member GM connects the storage device 200 to the body 111, the inverter 100 can form a dual coupling with the storage device 200.

[0141] The rod support 1123 may also be formed on the surface of the door 112 facing the body 111. The rod support 1123 is formed to protrude in a first direction based on the closed state of the door 112, and when the door 112 is open, the rod support 1123 can support the safety rod 113.

[0142] In some embodiments, the rod support 1123 may be formed to protrude in the shape of surrounding an end portion of the safety rod 113 that contacts the door 112. A hollow portion may be formed on the surface of the rod support 1123 that contacts the door 112, and the safety rod 113 is positioned in the hollow portion.

[0143] When the door 112 is opened at a preset angle relative to the main body 111, one end portion of the safety rod 113 fixed to the surface of the main body 111 can be lifted and fitted into the hollow portion of the rod support 1123, so that the safety rod 113 can stably fix the door 112 and support the door 112.

[0144] Door 112 can be prevented from closing by contact with safety bar 113.

[0145] With the safety bars 113 arranged on opposite sides of the main body 111, the rod supports 1123 can also be arranged on opposite sides of the door 112. Therefore, multiple safety bars 113 can contact multiple rod supports 1123, and the multiple safety bars 113 can prevent the door 112 from tilting due to its own weight, and the door 112 can be stably maintained in the open state.

[0146] The safety bar 113 may be in the shape of an elongated rod, with one end rotatably connected to the body 111 and the other end supported by the door 112. In some embodiments, the safety bar 113 may slide vertically through a rod hole, which is formed as a slot at one end of the safety bar connected to the body 111.

[0147] Safety bar 113 can be arranged between body 111 and door 112 to support door 112, allowing door 112 to remain open and not closed.

[0148] When the door 112 is opened, one end of the safety bar 113 is rotatably connected to the body 111, and the other end is supported by the bar support 1123 of the door 112 through contact. Therefore, the door 112 can be stably kept open.

[0149] When the safety bar 113 is separated from the bar support 1123, the door 112 can close due to gravity. The other end of the safety bar 113 that is separated from the bar support 1123 can be positioned on the surface of the body 111 and can be fitted into a fixing clip (not shown) arranged on the opposite side of the body 111 for fixation.

[0150] Reference Figure 6 and Figure 7 A heat dissipation housing 140 covering one side of the main housing 110 and having multiple heat dissipation fins 143 may include a first body 141, a second body 142 and multiple heat dissipation fins 143.

[0151] The first body 141 has an internal space and accommodates a circuit board unit 130. A heat sink 143 may be formed on one side of the first body 141, opposite to the surface on which the circuit board unit 130 is disposed. In some embodiments, the circuit board unit 130 may be disposed on an inner surface IS of the first body 141 that forms the internal space, and the heat sink 143 may be formed on a surface opposite to the inner surface IS to protrude outward.

[0152] Therefore, the heat generated from the circuit board arranged in the internal space can be transferred through the first body 141 to the heat sink 143 and effectively dissipated to the outside.

[0153] The second body 142, which is arranged adjacent to the heat sink 143 and has an internal space, can be formed to protrude from the first body 141 along a first direction. When the second body 142 protrudes outward, a space can be formed inside the second body 142 to accommodate an additional circuit board.

[0154] Therefore, within the inverter 100 according to an embodiment of the present disclosure, a plurality of circuit boards constituting the circuit board unit 130 can be stacked to be supported by the main board MP, the first body 141, and the second body 142.

[0155] Multiple heat sinks 143 can be set and arranged on the surface of the heat sink housing 140 to protrude outwards.

[0156] The heat sink 143 can extend vertically, and each heat sink can have an elongated shape. The heat sink 143 can be arranged on the heat sink housing 140 at predetermined intervals. Due to this optimized structure of the heat sink 143, the surface area of ​​the heat sink housing 140 can be maximized, and the heat dissipation efficiency can be improved.

[0157] The heat sink 143 may comprise various materials, such as metallic materials with high thermal conductivity, such as aluminum or copper. However, this disclosure is not limited thereto, and various modifications can be made to the material within the scope of techniques that allow for high thermal conductivity and efficient heat dissipation from the interior of the heat sink housing 140.

[0158] Reference Figure 7 The connecting protrusion 1401 can be connected to the support member SM. Each connecting protrusion has a surface facing the storage device 200 and is formed from the lower part of the heat sink housing 140. Figure 6 The protrusion 1401 is highlighted in the middle and will be described below.

[0159] In some embodiments, the connecting protrusion 1401 may be parallel to the following surface of the storage device 200 ( Figure 7 The inverter 100 is mounted on the upper surface of the device 200. A support member SM can be arranged between the connecting protrusion 1401 and the storage device 200, which are arranged parallel to each other. One end of the support member SM can be connected to the storage device 200, and the other end of the support member SM can be connected to the connecting protrusion 1401.

[0160] The heat sink 140 can be connected to the support member SM via the connecting protrusion 1401 to secure it in place on the storage device 200.

[0161] The connecting protrusions 1401 can be symmetrically arranged on opposite sides of the heat sink housing 140, and the support members SM can be connected to the connecting protrusions 1401 to support opposite sides of the heat sink housing 140 respectively.

[0162] With the connecting protrusion 1401 arranged on opposite sides of the heat sink housing 140 to support the opposite sides of the heat sink housing 140, the loads on the heat sink housing 140 and the circuit board unit 130 housed in the heat sink housing can be distributed to the opposite sides, and the risk of deformation or damage due to the load on the heat sink housing 140 can be reduced.

[0163] In addition, its resistance to external forces and vibrations increases, thus allowing it to maintain a stable balance.

[0164] Reference Figure 7 The cover 150 surrounding the heat sink housing 140 and connected to the main housing 110 can protect the heat sink housing 140 from external impacts.

[0165] In some embodiments, the cover 150 can physically prevent users or staff from contacting the surface of the heat sink housing 140 (which can reach a high temperature due to heat generated by the internal circuit board), thereby protecting users and staff.

[0166] The cover 150 may include a side cover 151 and a connecting cover 152.

[0167] Side covers 151 extend along the side surface of the heat sink housing 140, and a pair of side covers 151 may be disposed on opposite side surfaces of the heat sink housing 140.

[0168] In other words, the side covers 151 can extend vertically from opposite side surfaces of the heat sink housing 140. The lower ends of the pair of side covers 151 ( Figure 7 The lower part of each part can be fastened to the storage device 200.

[0169] In this configuration, one end portion of a side cover 151 may be fastened to a fastening member FM (which is welded to the main housing 110) to connect to the main housing 110, and the opposite end portion may be fastened to another fastening member FM (which is welded to the storage device 200) to connect to the storage device 200.

[0170] The handle 1511 can be formed along one side of the side cover. The handle 1511 has the following structure: one surface of the side cover 151 is recessed in a first direction, and the handle can be formed by machining one surface of the side cover 151.

[0171] A handle 1511 may be formed in each of the pair of side covers 151. The pair of handles 1511 are formed in a symmetrical structure so that the operator can easily grip the cover 150 when installing and removing the inverter 100.

[0172] The cover 150 may include a connecting cover 152 that connects a pair of side covers 151 to each other. The connecting cover 152 is arranged between the side covers 151 and may extend in a second direction.

[0173] The cover 150 may have a plurality of cover holes 152h, which serve as channels between the interior and the exterior and extend in a first direction.

[0174] Multiple cover holes 152h allow heat dissipated from the heat dissipation housing 140 to be effectively dissipated to the outside of the cover 150.

[0175] In some embodiments, a plurality of cover holes 152h may be arranged on the connecting cover 152 and may be spaced apart from each other on the connecting cover 152 at a predetermined interval. In some embodiments, the plurality of cover holes 152h may be arranged to be spaced apart from each other in a second direction, the second direction being the longitudinal direction of the connecting cover 152.

[0176] The cover hole 152h can be a channel through which heat dissipated from the heat sink 143 can escape. Because the multiple heat sinks 143 and the multiple cover holes 152h are arranged to be spaced apart from each other in the second direction, the heat dissipated through the heat sinks 143 can be easily dissipated to the outside through the cover holes 152h.

[0177] In addition, the cover hole 152h, which serves as a channel between the inside and outside of the cover 150, can promote air circulation between the inside and outside of the inverter 100 to prevent heat from accumulating in specific areas.

[0178] Reference Figure 7 A fastening member FM having a curved shape and fastening to the cover 150 can connect the cover 150 to the storage device 200.

[0179] Multiple fastening components FM can be provided. Some of the multiple fastening components FM can be welded to the rear surface portion of the body 111 to secure the cover 150 to the body 111.

[0180] In some embodiments, a total of four fastening members FM can be welded to the rear surface portion of the body 111. The four fastening members FM can form two pairs, and these pairs can be respectively arranged on the upper portion (not shown) and the lower portion (not shown) of the body 111. Figure 7 (in the lower part of the middle).

[0181] In this configuration, the bent end and the other end of each of the two fastening members FM arranged in the lower portion of the body 111 can be connected to the cover 150 and the storage device 200, respectively. In some embodiments, the surface connecting the bent end to the other end can be welded to the rear surface portion of the body 111.

[0182] In some embodiments, some of the plurality of fastening members FM may each have an end welded to the storage device 200 and a corresponding lower end fastened to the cover 150. Figure 7 The other end of the cover (on the lower side) is used to secure the cover 150 to the storage device 100.

[0183] In other words, since the main housing 110 is connected to the cover 150 via the fastening member FM, and the cover 150 is connected to the storage device 200, the main housing 110 can be indirectly fixed to the storage device 200.

[0184] Figure 8 yes Figure 5 A magnified view of part A. (Refer to...) Figure 8 One side of the fixing member GM is connected to the main housing 110, and the other side is connected to the storage device 200. It may have guide holes GM-1 on its inner side, each guide hole GM-1 allowing the protrusion to pass through. The fixing member GM may extend in the vertical direction, and the multiple guide holes GM-1 may be arranged to be spaced apart from each other in the vertical direction.

[0185] In some embodiments, the guide protrusion 1112 may be formed to protrude from the surface of the main housing 110, and different protrusions may be formed to protrude from the storage device 200. In this case, the guide protrusion 1112 of the main housing 110 may be mated and coupled with a guide hole GM-1 formed in a region adjacent to the main housing 110. Furthermore, protrusions formed to protrude from the surface of the storage device 200 may be mated and coupled with a guide hole GM-1 formed in a region adjacent to the storage device 200.

[0186] In other words, the guide hole GM-1 formed in the fixed component GM can be connected to the main housing 110 and the storage device 200 respectively, and when multiple protrusions are mated and coupled with the guide hole GM-1, the inverter 100 and the storage device 200 can be aligned in a straight line.

[0187] In this state, when the fixing member GM is tightened, the main housing 110 and the storage device 200 can be vertically connected to each other and aligned in a line. In other words, the guide protrusion 1112 and the protrusion of the storage device 200 can be aligned on the same straight line.

[0188] When the fixing member GM connects the main housing 110 to the storage device 200, the guide protrusion 1112 can help align the two devices and guide the main housing 110 to its correct position on the storage device 200.

[0189] The fixing member GM may also include a mounting hole GM-2 arranged on one side of the guide hole GM-1. The mounting hole GM-2 may also be arranged vertically on the fixing member GM, just like the guide hole GM-1.

[0190] Mounting hole GM-2 is a channel through which fastening elements such as screws can pass, and fastening elements can pass through mounting hole GM-2 to secure fastening member GM to storage device 200 and main housing 110.

[0191] In other words, the inverter 100 and the fixed member GM can be fastened to each other by the mounting hole GM-2 formed on the side adjacent to the main housing 110, and the storage device 200 and the fixed member GM can be fastened to each other by the mounting hole GM-2 formed on the other side adjacent to the storage device 200.

[0192] Therefore, the inverter 100 and the storage device 200 can be aligned in a straight line and then fixed in place, and the front surface of the inverter 100 can be stably coupled to the storage device 200.

[0193] Furthermore, even when the door 112 is opened or the door is removed, the fixing member GM can maintain the fixation between the main body 111 and the front of the storage device 200.

[0194] Figure 9 It is along Figure 5 A cross-sectional view taken from line V-V'.

[0195] Reference Figure 9 The coupling groove 1114 is formed to have a predetermined depth on the surface of the inverter 100 facing the storage device 200, and the cables of the inverter 100 and the storage device 200 can be coupled to each other or electrically connected to each other inside the coupling groove 1114.

[0196] The coupling slot 1114 can be arranged at the edge of the inverter 100. In some embodiments, the coupling slot 1114 can be arranged at a location away from the central portion of the inverter 100 (where the guide protrusion 1112 is arranged), and can be arranged facing the left or right side of the inverter 100 (in the...). Figure 5 (Middle) bias.

[0197] When the inverter 100 is mounted on the storage device 200, the connection protrusion 201 formed at the position corresponding to the coupling slot 1114 can be located inside the coupling slot 1114. Therefore, the connection protrusion 201 can also be positioned biased toward the left or right side of the upper surface of the storage device 200.

[0198] Here, the gasket GK can be arranged in the coupling slot 1114, and when the inverter 100 is installed on the storage device 200, the connecting protrusion 201 can apply force to the gasket GK in the vertical direction to compress the gasket GK.

[0199] The connecting protrusion 201 is formed to protrude from the surface of the storage device 200, in the form of a partition wall with a predetermined height, and may have four surfaces. A hollow portion may be formed in the area surrounded by the connecting protrusion 201.

[0200] Cables inside the storage device 200 can be led out to the outside through the hollow portion, in which case the cables already led out can be connected to the coupling slot 1114. In some embodiments, cables inside the storage device 200 can be connected to a connector inserted into the coupling hole 1114h, or can be introduced into the inverter 100 through the coupling hole 1114h.

[0201] Furthermore, corresponding partition walls form the four surfaces of the connecting protrusion 201, and the corresponding partition walls can compress the corresponding corners of the gasket GK arranged along the inner periphery of the coupling groove 1114. Here, each partition wall can have a narrow width and can have a protruding blade shape. Therefore, the connecting protrusion 201 can compress the gasket GK with greater pressure and can improve the sealing performance of the energy storage system 20.

[0202] The coupling groove 1114 may have a first surface 1114a facing the storage device 200 and a second surface 1114b connected to the first surface 1114a and arranged to be inclined outward.

[0203] The first surface 1114a is arranged parallel to the storage device 200 and may be formed parallel to the upper surface of the storage device 200. The second surface 1114b may be arranged on the opposite side of the first surface 1114a. The second surface 1114b may have a preset angle relative to the first surface 1114a and may be arranged facing outward.

[0204] Therefore, when the inverter 100 is mounted on the storage device 200, the connection protrusion 201 can be easily positioned within the coupling groove 1114 to compress the washer GK.

[0205] The coupling groove 1114 according to an embodiment of the present disclosure may have a width length L1 (hereinafter referred to as "the width L1 of the coupling groove 1114"). Specifically, the width L1 of the coupling groove 1114 may refer to the length of the first surface 1114a in the second direction. Here, the connecting protrusion 201 may also have a width length L2 (hereinafter referred to as "the width L2 of the connecting protrusion 201").

[0206] Reference Figure 9 The width of the coupling groove 1114 can be greater than that of the connecting protrusion 201. In other words, the width L1 of the coupling groove 1114 can be greater than the width L2 of the connecting protrusion 201. Therefore, the inner periphery of the coupling groove 1114 can be greater than the outer periphery of the connecting protrusion 201.

[0207] When the inner periphery of the coupling groove 1114 is larger than the outer periphery of the coupling protrusion 201, the coupling protrusion 201 can be easily placed within the coupling groove 1114. Furthermore, the plurality of partition walls forming the connecting protrusion 201 can be entirely covered by the second surface 1114b of the coupling groove 1114.

[0208] In other words, when the inverter 100 is connected to the storage device 200, the side surface of the channel through which the cable passes can be double-covered by the second surface 1114b of the connecting protrusion 201 and the coupling groove 1114.

[0209] Furthermore, the gasket GK is arranged at the part where the coupling groove 1114 and the connecting protrusion 201 contact each other, and when the connecting protrusion 201 compresses the gasket GK, the side surface, upper surface and lower surface of the cable channel can be completely sealed, thereby preventing the introduction of external air such as dust or moisture.

[0210] Figure 10 yes Figure 7 A magnified view of part B.

[0211] Reference Figure 10 The inverter 100 may also include a support member SM disposed between the heat sink housing 140 and the storage device 200.

[0212] In some embodiments, one side of the support member SM is connected to the connecting protrusion 1401, and the other side is connected to the upper surface of the storage device 200. The support member SM can connect the rear surface of the inverter 100 to the storage device 200 while also supporting the heat sink 140. In some embodiments, the support member SM can space the heat sink 140 and the storage device 200 apart from each other by a predetermined interval.

[0213] The supporting member SM can be formed in a columnar shape and can include a contact surface portion SM-1, a side surface portion SM-2, and a supporting surface portion SM-3. The contact surface portion SM-1 can be the upper surface of the supporting member SM. Figure 10 The upper surface of the structure, in other words, is the surface that contacts the connecting protrusion 1401.

[0214] When the inverter 100 is installed on the storage device 200, the contact surface portion SM-1 can be positioned such that the upper surface of the contact surface portion SM-1 contacts the lower surface of the connecting protrusion 1401, and then fixed by fastening elements.

[0215] The side surface portion SM-2, extending vertically, can be arranged at the edge of the contact surface portion SM-1. The side surface portion SM-2 forms the side surface of the support member SM, and can connect the contact surface portion SM-1 and the support surface portion SM-3.

[0216] In an alternative embodiment, the side surface portion SM-2 may be connected to the three edges of the contact surface portion SM-1 and extend in the vertical direction.

[0217] The support surface SM-3 can be arranged at the end of the side surface portion SM-2 that is not connected to the contact surface portion SM-1. The support surface portion SM-3 is the area connected to the storage device 200, and each can be arranged in a direction toward the outside of the support member SM.

[0218] Therefore, when the heat sink 140 is supported by the support member SM, the weight of the heat sink 140 and the circuit board unit 130 housed therein can be distributed and supported on opposite sides, so that the heat sink 140 can be stably positioned on the storage device 200.

[0219] In addition, the upper surface of the support member SM may undergo a masking process to ensure grounding continuity between the heat dissipation housing 140 and the storage device 200.

[0220] The support member SM can space the storage device 200 and the heat sink 140 apart by a preset interval. Here, the gap between the storage device 200 and the heat sink 140 can be the same as the vertical height of the support member SM.

[0221] Therefore, a partition space can be formed between the storage device 200 and the heat sink housing 140. Through the partition space, external air can be smoothly supplied to the heat sink fins 143 side, thus preventing the inverter 100 from overheating.

[0222] In addition, the partition space is used to prevent vibrations generated in one device from being transmitted to another, thereby improving the stability of the device.

[0223] A protrusion 200p protruding vertically can be formed on the surface of the storage device. A plurality of protrusions 200p can be arranged on the storage device 200 to be spaced apart from each other in a second direction.

[0224] Reference Figure 6 A hollow portion can be formed on the surface of the fastening member FM that contacts the storage device 200.

[0225] Refer again Figure 10 The protrusion 200p can pass through the hollow portion of the fastening member FM to secure the position of the main housing 110. In some embodiments, the fastening member FM through which the protrusion 200p passes has a surface welded to the main housing 110 and can guide the inverter 100 to its correct position along a first direction and a second direction during the assembly of the inverter 100 and the storage device 200.

[0226] In other words, during the installation of inverter 100, the front position of inverter 100 can be guided by guide protrusion 1112 and fixing member GM, and the rear position of inverter 100 can be guided by protrusion 200p and fastening member FM.

[0227] Therefore, when the inverter 100 and the storage device 200 are assembled, the degrees of freedom of the inverter 100 relative to the first direction and the second direction can be constrained.

[0228] In other words, the guiding structure can guide the position of the inverter 100 so that once the inverter 100 is placed on the storage device, the connecting protrusion 201 is positioned in the coupling groove 1114, and thus, the gasket GK attached to the coupling groove 1114 can be prevented from being damaged by the protruding blade structure of the connecting protrusion 201.

[0229] The following describes the installation method and effects of the inverter 100 according to embodiments of the present disclosure.

[0230] According to an embodiment of the present disclosure, the inverter 100 is electrically connected to the storage device 200 and can be coupled to the connection protrusion 201 of the storage device 200.

[0231] Inverter 100 may include main housing 110, safety cover 120, circuit board unit 130, heat sink housing 140, cover 150, fixing member GM, support member SM and fastening member FM.

[0232] Reference Figure 3 The inverter 100 can be mounted on the surface of the storage device 200 and can be coupled to the storage device 200 in the vertical direction. Here, the front surface of the inverter 100 can be connected to the storage device 200 via a fixing member GM, and the rear surface of the inverter 100 can be connected to the storage device 200 via a support member SM. In some embodiments, the cover 150 surrounding the heat sink housing 140 can be connected to the main housing 110 and the storage device 200 via multiple fastening members FM.

[0233] Reference Figure 5 The fixing member GM is formed to extend in the vertical direction and connect the front surface of the inverter 100 to the storage device 200, and one side of the fixing member GM can be coupled to the inverter 100, while the opposite side can be coupled to the storage device 200.

[0234] In some embodiments, the fixing member GM may have a plurality of guide holes GM-1 arranged to be spaced apart from each other in the vertical direction. The guide holes GM-1 provided on one side of the fixing member GM may be mated and coupled with guide protrusions 1112 protruding from the surface of the inverter 100 along a first direction.

[0235] Furthermore, the guide hole GM-1 arranged on the other side of the fixing member GM can be mated and coupled with a separate protrusion protruding from the surface of the storage device 200 along a first direction.

[0236] When the guide hole GM-1 of the fixed component GM is coupled to the inverter 100 and the storage device 200 respectively, the central axes of the inverter 100 and the storage device 200 can coincide with each other, and the two devices can be linearly aligned in the vertical direction.

[0237] Here, the fixing member may have mounting holes GM-2 arranged adjacent to the corresponding guide holes GM-1. Like the guide holes GM-1, the multiple mounting holes GM-2 may also be arranged to be spaced apart in the length direction (i.e., vertical direction) of the fixing member GM.

[0238] Here, when a fastening element such as a screw is inserted into the mounting hole GM-2, the fixing member GM can be fastened to the inverter 100 and the storage device 200. That is, when the fixing member GM aligns the inverter 100 and the storage device 200 and the fixing member GM is fastened to each device, the front surface of the inverter 100 can be connected to the storage device 200.

[0239] Reference Figure 7 and Figure 10 The support member SM is formed to extend in the vertical direction and connect the rear surface of the inverter 100 to the storage device 200, and can space the heat sink 140 and the storage device 200 apart from each other at a preset interval.

[0240] When the inverter 100 is mounted on the upper surface of the storage device 200, a plurality of connecting protrusions 1401 protruding from the heat sink housing 140 can be respectively mounted on the surfaces of a plurality of support members SM. In some embodiments, the connecting protrusions 1401 can be positioned on the contact surfaces of the support members SM, and in this case, the inverter 100 and the support members SM can be fastened by fastening elements such as screws and bolts.

[0241] The surface of the fastening member FM can be welded to the main housing 110, and the bent end of the fastening member FM can be fastened to the cover 150. Here, the other end of the fastening member FM that is not fastened to the cover 150 is arranged opposite to the storage device 200, and a hollow portion is formed on the inside of the other end.

[0242] When the connecting protrusion 1401 is located on the upper surface of the support member SM, the protrusion 200p can pass through the hollow portion of the fastening member FM. In other words, when the inverter 100 is placed on the storage device 200, the protrusion 200p, together with the support member SM, can guide the inverter 100 to the correct position of the inverter along the first and second directions.

[0243] When the inverter 100 and the support member SM are fastened respectively, the front and rear surfaces of the inverter 100 can be connected to the storage device 200 respectively, and when the engine cover 150 is installed by the fastening member FM, the position of the inverter 100 relative to the storage device 200 is fixed.

[0244] Finally, after connecting the individual power cables, communication cables, etc. to the inverter 100, the installation of the inverter 100 is completed by closing the door 112 and sequentially fastening the extended tabs 1121 facing the storage device 200 to the storage device 200.

[0245] In the inverter 100 according to an embodiment of the present disclosure, when the fixing member GM, the support member SM and the fastening member FM fix the position of the inverter 100, the connection protrusion 201 of the storage device 200 can be naturally positioned in the coupling groove 1114 and the compression washer GK is compressed to form a sealing structure.

[0246] Reference Figure 5 and Figure 9 The coupling groove 1114 is formed in a recess on the surface of the inverter 100 facing the storage device 200 to have a predetermined depth, and can be arranged on one side of the body 111. In some embodiments, the coupling groove 1114 can be arranged at a position away from the central portion of the inverter 100 (with a fixed member GM).

[0247] The surface of the storage device 200 facing the coupling groove 1114 may have a connecting protrusion 201, which is formed as a partition wall shape protruding in the vertical direction.

[0248] The center of the front part of the inverter 100 is aligned with the storage device 200 by means of the fixing member GM, and the position of the rear part of the inverter 100 in the first direction and the second direction is set by means of the fastening member FM, so that the inverter 100 is positioned on the storage device 200, and the connecting protrusion 201 can be naturally inserted into the coupling groove 1114.

[0249] Here, the connecting protrusion 201 can compress the gasket GK arranged along the inner circumference of the coupling groove 1114 and can completely seal the interior of the coupling groove 1114 that connects the storage device 200 to the inverter 100.

[0250] Furthermore, since the connecting protrusion 201 is immediately placed in the coupling groove 1114 via the guide structure, the gasket GK attached to the coupling groove 1114 can be prevented from being damaged by the protruding blade structure of the connecting protrusion 201.

[0251] The advantage of this disclosure is that when the inverter 100 is installed, by fixing only the position of the inverter 100 to the storage device 200, the connection protrusion 201 of the storage device 200 can compress the gasket GK in the coupling groove 1114 to form a sealing structure.

[0252] Therefore, since the coupling slot 1114 and the connecting protrusion 201 naturally face each other and are sealed by the surrounding connecting structure, it is not necessary to directly fasten the coupling slot 1114 to the storage device 200 in the vertical direction, thus improving the convenience of installation and removal of the inverter 100.

[0253] Furthermore, when replacing the inverter 100, after releasing the fastenings of the fixing member GM, the support member SM, the fastening member FM, and the cover 150, the inverter 100 can be immediately lifted in the vertical direction and then separated from the storage device 200, thus facilitating replacement.

[0254] The inverter 100 according to an embodiment of the present disclosure is configured to be separable from the storage device 200, such that if the inverter 100 needs to be replaced, the inverter 100 can be easily separated and the inverter replaced, and thus the cost required for product maintenance can be reduced.

[0255] Although one embodiment of this disclosure has been described above, the spirit of this disclosure is not limited to the embodiment set forth in this specification. Those skilled in the art who understand the spirit of this disclosure can readily propose other embodiments by adding, modifying or deleting components within the same spirit and scope, but these embodiments will also fall within the spirit and scope of this disclosure.

Claims

1. An inverter, comprising: main housing; A heat dissipation housing, which covers one side of the main housing and has multiple heat dissipation fins; and A circuit board unit, arranged within an internal space defined by an assembly of the main housing and the heat sink, the circuit board unit having one or more circuit boards configured for mutual conversion between DC power and AC power, and A fixing member that connects the main housing to an externally located storage device.

2. The inverter of claim 1, wherein the main housing includes a guide protrusion formed to protrude from a surface of the main housing.

3. The inverter according to claim 1, wherein, The surface of the main housing has a coupling groove, which is recessed inward to a predetermined depth, and the storage device can be connected to the coupling groove.

4. The inverter according to claim 3, wherein, The coupling groove includes: The first surface facing the storage device; and A second surface connected to the first surface and arranged to be inclined outwards.

5. The inverter of claim 3, further comprising a washer arranged circumferentially on the inner surface of the coupling groove and capable of connecting to a connection protrusion formed to protrude from the surface of the storage device.

6. The inverter according to claim 5, wherein, The gasket comprises a material capable of elastic deformation.

7. The inverter according to claim 1, wherein, The fixing member includes a guide hole that can be coupled to the main housing.

8. The inverter according to claim 7, wherein, The guide hole is configured as a plurality of guide holes, which can be coupled to the main housing and the storage device respectively.

9. The inverter according to claim 1, further comprising a support member disposed between the heat sink housing and the storage device to support the heat sink housing.

10. An energy storage system, comprising: Inverter; and Storage device The inverter includes: main housing; A heat dissipation housing, which covers one side of the main housing and has multiple heat dissipation fins; A circuit board unit, arranged within an internal space defined by an assembly of the main housing and the heat sink, the circuit board unit having one or more circuit boards configured to convert between direct current and alternating current; and A fixing member that connects the main housing to an externally located storage device; The inverter and the storage device are electrically connected to each other.

11. The energy storage system according to claim 10, wherein, The main housing includes a guide protrusion formed to protrude from the surface of the main housing.

12. The energy storage system according to claim 10, wherein, The surface of the main housing has a coupling groove, which is recessed inward to a predetermined depth, and the storage device can be connected to the coupling groove.

13. The energy storage system of claim 12, further comprising a gasket disposed circumferentially on the inner surface of the coupling groove and capable of connecting to a connection protrusion formed to protrude from the surface of the storage device.

14. The energy storage system according to claim 10, wherein, The fixing member includes a guide hole that can be coupled to the main housing.

15. The energy storage system of claim 10, further comprising a support member disposed between the heat dissipation housing and the storage device to support the heat dissipation housing.

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