Noise reduction devices and energy storage equipment

Abstract

This application provides a noise reduction device and an energy storage device. The noise reduction device includes: a housing having a receiving cavity, and a vent and a mounting port communicating with the receiving cavity, the mounting port being configured to face and communicate with the vent of the energy storage cabinet; and a noise reduction component disposed within the receiving cavity and used to reduce the noise of the vent, the noise reduction component including at least two detachably connected noise reduction elements. This noise reduction device is used to improve service life.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a noise reduction device and an energy storage device. Background Technology

[0002] Energy storage devices are used to store electrical energy. These devices include energy storage cabinets, which are commonly used in power systems to improve energy efficiency, stabilize the power grid, and support the integration of renewable energy sources. Energy storage cabinets can store electrical energy during periods of low demand and release it during periods of high demand, thereby balancing supply and demand.

[0003] Energy storage devices typically include battery modules, air conditioning modules, and noise reduction devices. Noise reduction devices are used to reduce the continuous noise generated by the battery modules and air conditioning modules during the operation of the energy storage device, so as to ensure the operating efficiency of the energy storage device and thus ensure the overall performance of the energy storage device.

[0004] However, noise reduction devices have a relatively short lifespan. Summary of the Invention

[0005] This application provides a noise reduction device and an energy storage device to improve service life.

[0006] In a first aspect, embodiments of this application provide a noise reduction device, including:

[0007] The housing has a receiving cavity, and a vent and a mounting port communicating with the receiving cavity, the mounting port being configured to be opposite to and communicating with the vent of the energy storage cabinet;

[0008] A noise reduction assembly, disposed within the receiving cavity and used to reduce the noise of the air outlet, the noise reduction assembly comprising at least two detachably connected noise reduction components.

[0009] In some possible implementations, a portion of the at least three noise reduction elements are disposed on the sidewall of the receiving cavity, while the remaining portion are disposed between the noise reduction elements on the sidewall of the receiving cavity and connected to the noise reduction elements on the sidewall of the receiving cavity.

[0010] In some possible implementations, at least three of the noise reduction components include:

[0011] The first noise reduction component is disposed on the side wall of the receiving cavity;

[0012] The second noise reduction component is disposed on the side wall of the receiving cavity and is opposite to the first noise reduction component along a direction intersecting the axis of the mounting opening;

[0013] A third noise reduction component is disposed on the side wall of the receiving cavity along a direction intersecting the axis of the mounting port. The third noise reduction component is disposed between the first noise reduction component and the second noise reduction component and abuts against the first noise reduction component and the second noise reduction component. The third noise reduction component is configured to face the air vent of the energy storage cabinet.

[0014] In some possible implementations, the end faces of the first noise reduction element and the third noise reduction element adjacent to each other are both bevels, and the bevel of the first noise reduction element abuts against the corresponding bevel of the third noise reduction element; and / or,

[0015] The end faces of the second noise reduction component and the third noise reduction component that are adjacent to each other are both inclined surfaces, and the inclined surface of the second noise reduction component is in contact with the corresponding inclined surface of the third noise reduction component.

[0016] In some possible implementations, the noise reduction device further includes:

[0017] A cavity sound-absorbing component is disposed in the receiving cavity and connected to the noise reduction component. The cavity sound-absorbing component is configured to be offset from the air vent of the energy storage cabinet. The cavity sound-absorbing component includes at least two Helmholtz resonant cavities for reducing low-frequency characteristic frequency noise in the receiving cavity.

[0018] In some possible implementations, the noise reduction device further includes:

[0019] At least two first connectors, a portion of the first connectors connect the cavity sound-absorbing component to the first noise-reducing component, and the remaining at least a portion of the first connectors connect the cavity sound-absorbing component to the second noise-reducing component;

[0020] A first support member is disposed at one end of the cavity sound-absorbing member adjacent to the bottom wall of the receiving cavity, for supporting the cavity sound-absorbing member, and the first support member is configured to be connected to the energy storage cabinet.

[0021] In some possible implementations, the energy storage cabinet has at least two air vents, and the at least two air vents include a first air inlet and a first air outlet;

[0022] The number of noise reduction components is at least two, and the at least two noise reduction components include a first noise reduction component opposite to the first air outlet and a second noise reduction component opposite to the first air inlet.

[0023] In some possible implementations, the first air inlet and the first air outlet are located on the same side of the energy storage cabinet;

[0024] The mounting port of the noise reduction device surrounds the first air inlet and the first air outlet.

[0025] In some possible implementations, the noise reduction device further includes:

[0026] A partition is disposed on the outer casing along a direction intersecting the arrangement direction of the first air inlet and the first air outlet. The partition is located between the first noise reduction component and the second noise reduction component, and between the first air inlet and the first air outlet. The partition is used to reduce thermal short circuit between the first air inlet and the first air outlet.

[0027] In some possible implementations, the housing is further provided with a drain outlet communicating with the receiving cavity, and the end of the partition extends out of the drain outlet.

[0028] In some possible implementations, the number of drain outlets is one, one end of the partition rests on the drain outlet, and along the direction away from the bottom wall of the receiving cavity, the end of the partition away from the drain outlet is higher than the end of the partition adjacent to the drain outlet; or...

[0029] The number of drain outlets is two, and the partition includes two connected segments. The ends of the two segments that are opposite to each other are respectively placed on the corresponding drain outlets. Along the direction away from the bottom wall of the receiving cavity, the end of each segment away from the drain outlet is higher than the end of the segment adjacent to the drain outlet.

[0030] In some possible implementations, when the number of drain outlets is one, the inclination angle of the partition away from the bottom wall of the receiving cavity is greater than or equal to 3° and less than or equal to 30°.

[0031] When there are two drain outlets, the inclination angle of each segment away from the bottom wall of the receiving cavity is greater than or equal to 3° and less than or equal to 30°.

[0032] In some possible implementations, the noise reduction device further includes:

[0033] A drainage sound-absorbing component is disposed on the side of the partition away from the bottom wall of the receiving cavity and adjacent to the drain outlet, and there is a gap between the drainage sound-absorbing component and the partition.

[0034] In some possible implementations, the partition has a boss on the side facing away from the bottom wall of the receiving cavity; one end of the drainage sound-absorbing component abuts against the noise reduction assembly, and the other end abuts against the boss, forming the gap; and / or,

[0035] Along the direction away from the bottom wall of the receiving cavity, the height of the gap is greater than or equal to 1 mm and less than or equal to 10 mm.

[0036] In some possible implementations, the at least three noise reduction components of at least one of the first noise reduction component and the second noise reduction component further include:

[0037] A fourth noise reduction component is disposed between the first and second noise reduction components along a direction intersecting the axis of the mounting port, and is connected to at least one of the first and second noise reduction components. The fourth noise reduction component is located within the space enclosed by the first, second, and third noise reduction components.

[0038] In some possible implementations, the at least three noise reduction elements of the first noise reduction component include the fourth noise reduction element, and the fourth noise reduction element of the first noise reduction component includes at least two first noise reduction sheets spaced apart.

[0039] The arrangement direction of the at least two first noise reduction sheets intersects with the arrangement direction of the first air inlet and the first air outlet.

[0040] In some possible implementations, the noise reduction device further includes:

[0041] A crossbeam, the two ends of which are respectively connected to the first noise reduction component and the second noise reduction component of the first noise reduction assembly, and the crossbeam is also connected to the at least two first noise reduction sheets.

[0042] In some possible implementations, the crossbeam includes:

[0043] A first beam is disposed on one side of the at least two first noise reduction sheets, and the two ends of the first beam are respectively connected to the first noise reduction component and the second noise reduction component of the first noise reduction assembly;

[0044] At least two connecting pieces are fastened to the first beam, and both ends of each connecting piece are connected to the same first noise reduction sheet.

[0045] In some possible implementations, the first beam body has at least two first positioning grooves on the side opposite to the first noise reduction sheet, and the connecting piece is correspondingly disposed in the first positioning groove; and / or,

[0046] The crossbeam further includes: a second beam body disposed on the side of the first noise-reducing sheet facing away from the first beam body, wherein at least two second positioning grooves are provided at the end of the second beam body facing the first beam body, and the first noise-reducing sheet is correspondingly disposed in the second positioning grooves; and / or

[0047] The crossbeams are provided in at least two sets, and the arrangement direction of the at least two sets of crossbeams intersects with the arrangement direction of the at least two first noise reduction sheets.

[0048] In some possible implementations, the at least three noise reduction elements of the second noise reduction component include the fourth noise reduction element, and the fourth noise reduction element of the second noise reduction component includes at least two second noise reduction sheets spaced apart.

[0049] The at least two second noise reduction plates are arranged in a direction away from the first air inlet.

[0050] In some possible implementations, the noise reduction device further includes:

[0051] At least two second connectors, a portion of which connect the fourth noise reduction component in the second noise reduction assembly to the first noise reduction component, and the remaining at least a portion of which connect the fourth noise reduction component to the second noise reduction component.

[0052] In some possible implementations, the at least three noise reduction elements of the first noise reduction component and the second noise reduction component further include:

[0053] A fifth noise reduction component is disposed between the first noise reduction component and the second noise reduction component along a direction intersecting the axis of the mounting port, and is connected to at least one of the first noise reduction component and the second noise reduction component.

[0054] In the first noise reduction component, the fifth noise reduction component is disposed opposite to the third noise reduction component;

[0055] In the second noise reduction assembly, the fifth noise reduction assembly is disposed at the end of the first noise reduction component, the second noise reduction component, and the third noise reduction component away from the bottom wall of the receiving cavity.

[0056] In some possible implementations, the noise reduction device further includes:

[0057] At least two third connectors, a portion of which connect the corresponding fifth noise reduction component to the first noise reduction component, and at least a portion of the remaining third connectors connect the corresponding fifth noise reduction component to the second noise reduction component.

[0058] In some possible implementations, the first air inlet and the first air outlet are arranged along the height direction of the housing;

[0059] The side wall of the receiving cavity is also provided with a second support member, which is located on the side of the partition away from the bottom wall of the receiving cavity, and the second support member supports the first noise reduction component.

[0060] In some possible implementations, the noise reduction device includes:

[0061] Sound-absorbing materials;

[0062] Fiberglass cloth is used to wrap the sound-absorbing material;

[0063] A face mask is placed over the fiberglass cloth, and at least a portion of the surface of the face mask has a perforated structure.

[0064] In some possible implementations, at least a portion of the surfaces of the mask, except for the surface facing away from the bottom wall of the receiving cavity, are provided with the perforated structure; and / or,

[0065] The sound-absorbing material includes at least one of glass wool, polyester fiber, polyethersulfone fiber, polypropylene and polyester composite fiber, and aluminum foam; and / or,

[0066] The thickness of the sound-absorbing material is greater than or equal to 15 mm and less than or equal to 150 mm; and / or,

[0067] The thickness of the fiberglass cloth is greater than or equal to 0.1 mm and less than or equal to 1.0 mm; and / or,

[0068] The thickness of the face mask is greater than or equal to 0.8 mm and less than or equal to 2.5 mm; and / or,

[0069] The noise reduction component further includes a waterproof and breathable membrane, which wraps the fiberglass cloth and is in contact with the face mask.

[0070] In some possible implementations, the noise reduction device further includes:

[0071] A mesh panel is connected to the outer casing and covers the ventilation opening.

[0072] In some possible implementations, the number of the ventilation openings is at least two, and the at least two ventilation openings include a second air inlet and a second air outlet;

[0073] The second air inlet and the second air outlet are arranged opposite each other along the height direction of the outer casing, and the second air inlet and the second air outlet are respectively provided with the mesh plate.

[0074] In some possible implementations, the noise reduction device further includes:

[0075] A rain shield is disposed on the outer casing and located on the side of the vent facing away from the bottom wall of the receiving cavity; the rain shield and the vent are spaced apart; and / or,

[0076] The thickness of the outer casing is greater than or equal to 0.8 mm and less than or equal to 2.5 mm; and / or,

[0077] The outer casing is made of at least one of stainless steel, zinc-iron composite material, aluminum, and plastic; and / or,

[0078] The outer casing is also provided with a handle, which is located outside the receiving cavity; and / or,

[0079] The outer casing has a chamfer or rounded corner on the side facing away from the energy storage cabinet.

[0080] Secondly, embodiments of this application provide an energy storage device, comprising:

[0081] The energy storage cabinet has air vents.

[0082] The noise reduction device described above is connected to the energy storage cabinet and is used to reduce the noise of the air vent.

[0083] In some possible implementations, the energy storage cabinet includes: a body, and a protrusion located on one side of the body, the protrusion being provided with the air vent;

[0084] The mounting port of the noise reduction device is fastened to the protrusion.

[0085] In some possible implementations, the outer peripheral surface of the protrusion is further provided with a stop, the stop being spaced apart from the body, for limiting the position of the noise reduction device;

[0086] One of the main body and the noise reduction device is provided with a slot, and the other is provided with a buckle, and the buckle and the slot are engaged.

[0087] The noise reduction device and energy storage equipment provided in this application embodiment have a noise reduction component disposed within the housing cavity of the outer shell. Located along the noise propagation path of the energy storage cabinet's air vent, it can absorb or attenuate the noise from the energy storage cabinet's air vent to reduce its noise level. The noise reduction component is detachable and replaceable relative to the outer shell, thereby extending the service life of the noise reduction device and reducing the cost of the noise reduction structure over the lifespan of the energy storage cabinet. The noise reduction component includes at least two noise reduction elements, which are detachably connected for easy assembly and disassembly. Failed noise reduction elements can be replaced to restore noise reduction functionality. Furthermore, the noise reduction component and its elements can be modularly designed, offering good interchangeability. Attached Figure Description

[0088] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0089] Figure 1 A schematic diagram of an energy storage device provided in this application;

[0090] Figure 2Exploded view of the energy storage device provided in this application;

[0091] Figure 3 A schematic diagram of the energy storage cabinet provided in this application;

[0092] Figure 4 A schematic diagram of the noise reduction device provided in this application;

[0093] Figure 5 A schematic diagram of the noise reduction component provided in this application;

[0094] Figure 6 Another schematic diagram of the noise reduction component provided in this application;

[0095] Figure 7 A schematic diagram of the casing provided in this application;

[0096] Figure 8 A schematic diagram of another energy storage device provided in this application;

[0097] Figure 9 A schematic diagram of yet another energy storage device provided in this application;

[0098] Figure 10 A schematic diagram of the noise reduction device provided in this application;

[0099] Figure 11 The frequency distribution diagram of the noise from the air vent of the energy storage cabinet provided in this application.

[0100] Explanation of reference numerals in the attached figures:

[0101] 10-Noise reduction device;

[0102] 20 - Outer shell; 21 - Receiving cavity; 22 - Second air inlet; 23 - Second air outlet; 24 - Mounting port; 25 - Handle; 26 - Second support component; 27 - Buckle; 28 - Drain outlet;

[0103] 31-First noise reduction component; 32-Second noise reduction component; 33-Partition;

[0104] 41-First noise reduction component; 42-Second noise reduction component; 43-Third noise reduction component; 44-Fifth noise reduction component; 45-Cavity sound absorption component; 46-Drainage sound absorption component; 47-First noise reduction sheet; 48-Second noise reduction sheet;

[0105] 51-First beam; 52-Second beam; 53-Connecting piece;

[0106] 61-First connector; 62-Second connector; 63-Third connector; 64-First support member;

[0107] 71-Sound-absorbing material; 72-Fiberglass cloth; 73-Facial mask;

[0108] 80-Grid plate;

[0109] 90 - Energy storage cabinet; 91 - First air inlet; 92 - First air outlet; 93 - Body; 94 - Protrusion; 95 - Slot.

[0110] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0111] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0112] In related technologies, noise reduction devices have a relatively short lifespan. This is because the device comprises a housing and sound-absorbing material housed within it, and the lifespan of the device depends on the lifespan of the internal sound-absorbing material. The housing, as the main component, is not easily damaged, while the sound-absorbing material (especially outdoors) has a relatively short lifespan. Furthermore, the entire noise reduction device is often welded / riveted as a single unit, with the sound-absorbing material fixed inside the housing, making it impossible to replace individually, thus further reducing the overall lifespan of the noise reduction device.

[0113] In the noise reduction device provided in this application, the noise reduction components are detachable and replaceable relative to the outer casing, thereby extending the service life of the noise reduction device and reducing the cost of the noise reduction structure throughout the lifespan of the energy storage cabinet. The noise reduction component includes at least two noise reduction elements, which are detachably connected, facilitating easy assembly and disassembly. Failed noise reduction elements can be replaced to restore noise reduction functionality. Furthermore, the noise reduction component and its components can be modularly designed, offering good interchangeability.

[0114] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0115] See Figures 1 to 10This application provides a noise reduction device 10, including a housing 20 and a noise reduction component. The housing 20 has a receiving cavity 21, and a vent and a mounting port 24 communicating with the receiving cavity 21. The mounting port 24 is configured to be opposite to and communicate with the vent of the energy storage cabinet 90. The noise reduction component is disposed in the receiving cavity 21 and is used to reduce the noise of the vent. The noise reduction component includes at least two noise reduction elements that can be detachably connected.

[0116] The outer casing 20 is located outside the energy storage cabinet 90. The mounting port 24 of the outer casing 20 is opposite to and connected to the air vent of the energy storage cabinet 90. The air vent of the outer casing 20 is used to allow air circulation between the outer casing 20 and the energy storage cabinet 90. The outer casing 20 and the energy storage cabinet 90 are separately designed and installed. The design of the noise reduction device 10 and the energy storage cabinet 90 does not affect each other, allowing for flexible structural design. The noise reduction device 10 has low coupling with the energy storage cabinet 90, does not affect the design of the energy storage cabinet 90, and can also remedy the problem of excessive noise in the already designed energy storage cabinet 90.

[0117] The housing cavity 21 of the outer shell 20 is used to support and protect the noise reduction component. The noise reduction component is located in the noise propagation path of the air vent of the energy storage cabinet 90 and can absorb or attenuate the noise from the air vent of the energy storage cabinet 90. The noise reduction component and the outer shell 20 can be positioned and fitted (form fit), that is, the noise reduction component can be close to the outer shell 20 or have a small gap, which facilitates the disassembly and replacement of the noise reduction component relative to the outer shell 20, thereby extending the service life of the noise reduction device 10 and reducing the cost of the noise reduction structure during the life cycle of the energy storage cabinet 90. The noise reduction component includes at least two noise reduction parts, which are detachably connected and easy to disassemble and assemble. It can further replace the failed noise reduction parts to restore the noise reduction function. In addition, the noise reduction component and noise reduction parts can be modularly designed with good interchangeability. The inner wall of the housing cavity 21 can also be provided with (such as plated or coated) a thermally conductive coating to improve heat dissipation efficiency.

[0118] See Figure 1 , Figure 2 , Figure 4 and Figure 7 The ventilation openings of the outer casing 20 are for air circulation and can be rectangular, circular, or other regular or irregular shapes. In some possible embodiments, the number of ventilation openings of the outer casing 20 is at least two, including a second air inlet 22 and a second air outlet 23. Both the second air inlet 22 and the second air outlet 23 are connected to the receiving cavity 21 to realize the air intake and exhaust of the receiving cavity 21, and realize the air intake and exhaust within the energy storage cabinet 90 through the mounting port 24 and the air vent, thereby dissipating heat.

[0119] The second air inlet 22 and the second air outlet 23 are arranged opposite each other along the height direction of the outer casing 20. For example, the second air inlet 22 is located at the lower end of the outer casing 20, and the second air outlet 23 is located at the upper end of the outer casing 20. The second air inlet 22 and the second air outlet 23 can be open at the corresponding ends of the receiving cavity 21, that is, the two ends of the receiving cavity 21 along the height direction of the outer casing 20 are open to form corresponding second air inlets 22 and second air outlets 23, so as to facilitate the disassembly and ventilation of the noise reduction components. The second air inlet 22 and the second air outlet 23 are arranged opposite each other along the height direction of the outer casing 20, and the mounting port 24 is located on the side of the outer casing 20. This can guide the noise from the air outlet of the energy storage cabinet 90 in another direction (perpendicular to the original direction), so that the noise reduction effect in the original propagation direction is better. That is, by guiding the noise, the noise reduction effect in a specific direction can be enhanced.

[0120] The mounting port 24 of the outer casing 20 is used to connect to the air vent of the energy storage cabinet 90 and can be used to fix or connect the energy storage cabinet 90. Its position and size are adapted to the air vent layout of the energy storage cabinet 90. The mounting port 24 and the air vent can be located on the same side or opposite side of the outer casing 20. Setting the air vent and the mounting port 24 on opposite sides can improve the ventilation and heat dissipation effect. Figure 7 As shown, the extending direction of the mounting port 24 intersects (e.g., is perpendicular to) the extending direction of the vent. For example, the housing 20 has two vents, including a second air inlet 22 and a second air outlet 23, and the arrangement direction of the second air inlet 22 and the second air outlet 23 is perpendicular to the extending direction of the mounting port 24.

[0121] In some possible implementations, such as Figure 1 , Figure 2 , Figure 4 and Figure 7 As shown, the thickness of the outer casing 20 is greater than or equal to 0.8 mm and less than or equal to 2.5 mm; and / or, the material of the outer casing 20 includes at least one of stainless steel, zinc-iron composite material (such as galvanized iron sheet), aluminum, and plastic; and / or, the outer casing 20 is also provided with a handle 25, which is located outside the receiving cavity 21; and / or, the side of the outer casing 20 away from the energy storage cabinet 90 has a chamfer or rounded corner.

[0122] The thickness of the outer shell 20 refers to the thickness of the sheet metal of the outer shell 20. The thickness of the outer shell 20 can be any one or a combination of any two of the following: 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, and 2.5mm. A thickness within the above range balances strength and lightweight design. The material of the outer shell 20 can be selected as needed, for example, high-strength stainless steel or zinc-iron composite materials, or lightweight aluminum or plastic.

[0123] To facilitate the installation and removal of the noise reduction device 10, handles 25 are provided on opposite sides of the outer casing 20 along a direction that intersects (e.g., perpendicular) to the outer casing 20 and the energy storage cabinet 90. For example, two handles 25 are installed on each side of the outer casing 20. The handles 25 are located outside the receiving cavity 21 and can be either handles or latches. Handles are components that protrude from or hang on the outer casing 20 to improve the grip and make operation easier and less strenuous. Latches are components that are recessed into or embedded in the outer casing 20 to ensure the integrity of the outer casing 20 panel and save space.

[0124] like Figure 7 As shown, the outer casing 20 can be rectangular, meaning that the side of the outer casing 20 facing away from the energy storage cabinet 90 has a right angle. Alternatively, as... Figure 8 As shown, the side of the outer casing 20 facing away from the energy storage cabinet 90 has a chamfer (bevel). Or, as... Figure 9 As shown, the outer casing 20 has rounded corners on the side facing away from the energy storage cabinet 90. The chamfered or rounded corners of the outer casing 20 prevent interference between the outer casing 20 and the adjacent energy storage cabinet 90 / noise reduction device 10 when the energy storage cabinet 90 is opened. The shape of the outer casing 20 is not limited and can also be other geometric shapes adapted to the energy storage cabinet 90. The outer casing 20 can also be internally reinforced as needed to improve structural rigidity and prevent resonance.

[0125] In some possible implementations, the noise reduction device 10 further includes a rain shield disposed on the housing 20 and located on the side of the vent facing away from the bottom wall of the receiving cavity 21, with the rain shield spaced apart from the vent. Figure 1 As shown, a rain shield is installed at a certain distance from the top of the outer casing 20 to prevent rainwater from falling into the ventilation openings (such as the second air outlet 23). The rain shield can be connected to the top of the outer casing 20 via a bracket or similar means. The rain shield is spaced apart from the outer casing 20 to ensure smooth airflow into and out of the outer casing 20 and the energy storage cabinet 90. The rain shield can be an inclined plate or a corrugated plate.

[0126] In some possible implementations, such as Figure 1 , Figure 2 , Figure 4 and Figure 7 As shown, the noise reduction device 10 also includes a mesh plate 80, which is connected to the housing 20 and covers the ventilation openings. The mesh plate 80 can be connected to the housing 20 by fasteners (such as screws). The mesh plate 80 covers the ventilation openings, which can prevent small animals and debris from entering the receiving cavity 21, and can limit or support the noise reduction components inside the receiving cavity 21. The number of mesh plates 80 can be consistent with the number of ventilation openings, and mesh plates 80 can be set for each ventilation opening.

[0127] like Figure 7 and Figure 4 As shown, the number of ventilation openings of the outer casing 20 is at least two, and the at least two ventilation openings include a second air inlet 22 and a second air outlet 23. The second air inlet 22 and the second air outlet 23 are arranged opposite to each other along the height direction of the outer casing 20, and both the second air outlet 23 and the second air inlet 22 are provided with a mesh plate 80.

[0128] The shapes of the grids in each of the 80 grid plates can be the same or different, such as circles, ellipses, rectangles, rhombuses, hexagons, etc. The size of the grids can be adjusted as needed, for example, greater than or equal to 2.5 mm and less than or equal to 5 mm. The above dimensions can be the diameter of a circle, the major axis of an ellipse, the side length of a rectangle, the side length of a rhombus, the side length of a hexagon, etc.

[0129] In some possible implementations, such as Figure 1 , Figure 2 , Figure 4 and Figure 7 As shown, the outer casing 20 is also provided with a drain outlet 28 communicating with the receiving cavity 21 to drain rainwater and other substances entering the receiving cavity 21. For example, at least one of the opposite sides of the outer casing 20 is provided with a drain outlet 28 along a direction intersecting the axis of the mounting opening 24. The drain outlet 28 may be provided on the same side as the handle 25, and the drain outlet 28 may be strip-shaped, with its extension direction (i.e., the length direction) aligned with (e.g., parallel to) the axis of the mounting opening 24.

[0130] Continue reading Figures 1 to 10 The noise reduction assembly includes at least three noise reduction components. A portion of these components are disposed on the sidewall of the receiving cavity 21, while the remaining components are disposed between and connected to the noise reduction components on the sidewall of the receiving cavity 21. The at least three noise reduction components can reduce noise, for example, through sound absorption, sound attenuation, or other acoustic treatments. For example, the noise reduction components can employ sound-absorbing structures and materials, i.e., they are sound-absorbing components. Alternatively, they can employ sound-absorbing structures and materials, i.e., they are sound-absorbing components.

[0131] Each of the at least three noise-reducing components can be quickly replaced as a single unit. These components are assembled into a single unit and can be easily installed into or removed from the receiving cavity 21. The noise-reducing components are positioned using the outer shell 20, for example, by abutting or abutting against the side wall of the receiving cavity 21, without requiring a connection to the outer shell 20. This further improves the ease of installation and removal, facilitates replacement, and extends the service life of the noise-reducing device 10. The noise-reducing components may have internal reinforcing ribs to enhance their strength.

[0132] In some possible implementations, such as Figure 2 and Figure 10 As shown, the noise reduction device includes: sound-absorbing material 71, fiberglass cloth 72, and a mask 73. The fiberglass cloth 72 wraps around the sound-absorbing material 71, and the mask 73 covers the outside of the fiberglass cloth 72. At least a portion of the surface of the mask 73 has a perforated structure. The mask 73 facilitates the connection between the noise reduction components, and its perforated structure also allows sound waves to enter the interior of the sound-absorbing material 71 and be absorbed by it. The fiberglass cloth 72 wraps around the sacrificial material, preventing the sound-absorbing material 71 from being directly exposed to the external environment, reducing the erosion of the sound-absorbing material 71 by rainwater and dust, thereby extending the service life of the noise reduction device 10.

[0133] Fiberglass cloth 72 can completely wrap around sound-absorbing material 71 to provide comprehensive protection for it. The fiberglass cloth 72 and sound-absorbing material 71 form a sound absorber and can be replaced as a single unit. A face mask 73 can be fastened to the outside of the fiberglass cloth 72 and sound-absorbing material 71 (i.e., the sound absorber), exposing a portion of the sound absorber; that is, the face mask 73 partially wraps around the sound absorber to facilitate replacement. At least a portion of the surface of the face mask 73 has a perforated structure to allow sound waves to enter the sound absorber, thereby reducing noise.

[0134] like Figure 2 and Figure 10 As shown, the surface of the sound absorber facing the side wall of the receiving cavity 21 is exposed. The mask 73 has five surfaces, and the sound absorber has six surfaces. The mask 73 covers the five surfaces of the sound absorber. After the sound absorber is installed in the mask 73, it is then installed inside the outer shell 20, which covers the sixth surface of the sound absorber. At least a portion of the surfaces of the mask 73, except for the surface facing away from the bottom wall of the receiving cavity 21, have perforated structures. That is, the top surface of the mask 73 does not have perforated structures to prevent rainwater from entering. The other surfaces of the mask 73, for example, have perforated structures to increase the sound absorption area, thereby improving the sound absorption efficiency. The mask 73 can be a perforated metal plate, wire mesh, etc., and its material can include stainless steel.

[0135] In some possible implementations, the sound-absorbing material 71 includes at least one of glass wool, polyester (PET) fiber, polyethersulfone (PES) fiber, polypropylene and polyester (PP+PET) composite fiber, and aluminum foam; and / or, the thickness of the sound-absorbing material 71 is greater than or equal to 15 mm and less than or equal to 150 mm; and / or, the thickness of the glass fiber cloth 72 is greater than or equal to 0.1 mm and less than or equal to 1.0 mm; and / or, the thickness of the mask 73 is greater than or equal to 0.8 mm and less than or equal to 2.5 mm.

[0136] The specific material of the sound-absorbing material 71 is selected according to the noise reduction needs. Porous materials such as glass wool, polyester fiber, and polyethersulfone can better take into account the mid and high frequencies, while functional structural materials such as composite fiber and foam can take into account the low frequencies.

[0137] The thickness of the sound-absorbing material 71 can be any one or a combination of any two of the following: 15mm, 25mm, 35mm, 45mm, 55mm, 65mm, 75mm, 85mm, 95mm, 100mm, 110mm, 120mm, 130mm, 140mm, and 150mm. A thickness within the above range can balance low-frequency sound absorption performance and space utilization.

[0138] The thickness of the fiberglass cloth 72 can be any one or a combination of any two of the following: 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, and 1mm. Within this range, the thickness of the fiberglass cloth 72 balances strength and sound transmission, allowing sound waves to pass through and enter the sound-absorbing material 71 while maintaining strength.

[0139] The thickness of the mask 73 can be any one or a combination of any two of the following: 0.8mm, 1.0mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2.0mm, 2.2mm, 2.4mm, and 2.5mm. A thickness within this range allows sound waves to pass through and enter the sound-absorbing material 71 while providing physical protection. The aperture of the perforated structure of the mask 73 is greater than or less than 2.5mm and less than or equal to 5mm, for example, any one or a combination of any two of the following: 2.5mm, 3.0mm, 3.5mm, 4mm, 4.5mm, and 5mm. A aperture within this range ensures sound wave passage and facilitates connection.

[0140] In some possible implementations, the noise reduction component also includes a waterproof and breathable membrane that wraps around the fiberglass cloth 72 and is in contact with the face mask 73 to reduce the impact of rainwater on the fiberglass cloth 72 and the sound-absorbing material 71, thereby improving the service life of the noise reduction component. The waterproof and breathable membrane can completely wrap the fiberglass cloth 72 and the sound-absorbing material 71, and its material may include expanded polytetrafluoroethylene (ePTFE), which has good waterproof and breathable properties.

[0141] In other possible implementations, the noise reduction component can also be a micro-perforated plate with a pore size of 1 mm or less. Sufficient acoustic resistance is provided by the friction of the micropores, thereby converting sound energy to achieve noise reduction, while also exhibiting good cleanliness and durability.

[0142] In some possible implementations, see [reference] Figure 2 , Figure 4 , Figure 5 and Figure 6 At least three noise reduction components are included: a first noise reduction component 41, a second noise reduction component 42, and a third noise reduction component 43. The first noise reduction component 41, the second noise reduction component 42, and the third noise reduction component 43 are all disposed on the side wall of the receiving cavity 21. The first noise reduction component 41 and the second noise reduction component 42 are opposite each other along a direction intersecting the axis of the mounting opening 24. Along a direction intersecting the axis of the mounting opening 24, the third noise reduction component 43 is disposed between the first noise reduction component 41 and the second noise reduction component 42, and abuts against the first noise reduction component 41 and the second noise reduction component 42. The third noise reduction component 43 is configured to face the air vent of the energy storage cabinet 90 to reduce the noise of the air vent. The first noise reduction component 41, the second noise reduction component 42, and the third noise reduction component 43 are disposed within the receiving cavity 21. Through the coordinated layout and mutual cooperation of the noise reduction components, and the limiting effect of the side wall of the receiving cavity 21, a stable structure is formed to reduce the noise of the air vent of the energy storage cabinet 90.

[0143] In this arrangement, the first noise reduction component 41, the third noise reduction component 43, and the second noise reduction component 42 are arranged sequentially along a direction intersecting (e.g., perpendicular to) the axis of the mounting opening 24. The first noise reduction component 41, the second noise reduction component 42, and the third noise reduction component 43 can all conform to the sidewall of the receiving cavity 21. The third noise reduction component 43 abuts against the first noise reduction component 41 and also against the second noise reduction component 42 to improve stability. For example, the first noise reduction component 41 and the second noise reduction component 42 are located on the side of the mounting opening 24, and the third noise reduction component 43 is located opposite the mounting opening 24.

[0144] The first noise reduction component 41, the second noise reduction component 42, and the third noise reduction component 43 are assembled and mutually restrained, facilitating the replacement of the first noise reduction component 41, the second noise reduction component 42, or the third noise reduction component 43. The third noise reduction component 43 can be directly assembled with the first noise reduction component 41 and the second noise reduction component 42, and then restrained by the outer shell 20. No screws or other fasteners are required for mutual constraint, enabling rapid installation and replacement of the noise reduction components. The first noise reduction component 41, the second noise reduction component 42, and the third noise reduction component 43 can cover the noise propagation direction of the air vents of the energy storage cabinet 90, increasing the coverage of the noise attenuation path and improving the noise reduction effect.

[0145] Among them, such as Figure 5 and Figure 10 As shown, the adjacent end faces of the first noise reduction component 41 and the third noise reduction component 43 are both inclined surfaces, and the inclined surface of the first noise reduction component 41 fits into the corresponding inclined surface of the third noise reduction component 43; and / or, the adjacent end faces of the second noise reduction component 42 and the third noise reduction component 43 are both inclined surfaces, and the inclined surface of the second noise reduction component 42 fits into the corresponding inclined surface of the third noise reduction component 43. The third noise reduction component 43 abuts against the first noise reduction component 41 and also against the second noise reduction component 42. The first noise reduction component 41, the second noise reduction component 42, and the sidewall of the receiving cavity 21 together limit the third noise reduction component 43. The third noise reduction component 43 can be inserted or removed individually to improve the flexibility of replacement.

[0146] The adjacent end faces of the first noise reduction component 41 and the third noise reduction component 43 are both inclined surfaces. For example, the adjacent end faces of the first noise reduction component 41 and the third noise reduction component 43 are inclined surfaces at a 45° angle, and the inclined surface of the first noise reduction component 41 is in contact with the corresponding inclined surface of the third noise reduction component 43. The adjacent end faces of the second noise reduction component 42 and the third noise reduction component 43 are also inclined surfaces. For example, the adjacent end faces of the second noise reduction component 42 and the third noise reduction component 43 are inclined surfaces at a 45° angle, and the inclined surface of the second noise reduction component 42 is in contact with the corresponding inclined surface of the third noise reduction component 43.

[0147] In some possible implementations, such as Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the noise reduction device 10 also includes a cavity sound-absorbing component 45, which is disposed in the receiving cavity 21 and connected to the noise reduction assembly. The cavity sound-absorbing component 45 is configured to be offset from the air vent of the energy storage cabinet 90. The cavity sound-absorbing component 45 includes at least two Helmholtz resonant cavities to reduce low-frequency characteristic frequency noise within the receiving cavity 21. The cavity sound-absorbing component 45 uses metamaterials and utilizes acoustic resonance effects to absorb specific frequency noise within the receiving cavity 21, reducing the propagation of low-frequency sound energy. The cavity sound-absorbing component 45 and the noise reduction assembly employ different noise reduction methods and cooperate with each other to achieve composite noise reduction, which can reduce mid-to-low frequency characteristic frequency noise.

[0148] See Figure 11 Without a noise reduction device 10, the noise spectrum of the energy storage cabinet's vents contains noise levels below 200Hz, which have a long propagation distance and strong penetrating power, easily causing environmental interference. The cavity sound-absorbing component 45 can produce a highly efficient sound absorption effect for specific low-to-mid-frequency noise by adjusting its structural parameters, effectively reducing noise at 200Hz and below.

[0149] The cavity sound-absorbing component 45 is offset from the air vent of the energy storage cabinet 90 to prevent sound waves from propagating through the air vent of the energy storage cabinet 90. The cavity sound-absorbing component 45 mainly reduces noise within the housing cavity 21. The Helmholtz resonant cavity of the cavity sound-absorbing component 45 includes a closed cavity and a through hole communicating with the cavity.

[0150] Among them, the resonant absorption frequency of the Helmholtz resonator , For the speed of sound, Let be the cross-sectional area of ​​the through hole. This refers to the depth (i.e., length) of the through hole. The radius of the through hole, This refers to the volume (or capacity) of the cavity.

[0151] To achieve the fixation of the cavity sound-absorbing component 45, such as Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the noise reduction device 10 further includes: at least two first connectors 61 and a first support 64. A portion of the first connectors 61 connect the cavity sound-absorbing component 45 to the first noise reduction component 41, and the remaining at least a portion of the first connectors 61 connect the cavity sound-absorbing component 45 to the second noise reduction component 42. The first support 64 is disposed at one end of the cavity sound-absorbing component 45 adjacent to the bottom wall of the receiving cavity 21, and is used to support the cavity sound-absorbing component 45. The first support 64 is configured to connect to the energy storage cabinet 90.

[0152] At least two first connectors 61 are used to connect the cavity sound-absorbing component 45 to the first noise-reducing component 41, and to connect the cavity sound-absorbing component 45 to the second noise-reducing component 42, forming a multi-point fixation to reduce displacement caused by vibration. At the same time, the detachable nature of the first connectors 61 also supports flexible maintenance of the cavity sound-absorbing component 45, thereby extending the service life of the noise reduction device 10. The first connectors 61 can adopt a Z-shaped structure and are connected to the first noise-reducing component 41, the second noise-reducing component 42, and the cavity sound-absorbing component 45 by bolts or the like.

[0153] The first support member 64 can be strip-shaped and located below the cavity sound-absorbing member 45 to support the cavity sound-absorbing member 45 and improve the installation stability of the cavity sound-absorbing member 45. The first support member 64 can be exposed at the mounting port 24 and connected (e.g., welded) to the energy storage cabinet 90. Taking a plane perpendicular to the extension direction of the first support member 64 as the cross-section, the cross-sectional shape of the first support member 64 can be L-shaped to improve structural strength. The cross-sectional shape of the first support member 64 can also be rectangular, etc.

[0154] Continue reading Figures 1 to 10 The energy storage cabinet 90 has at least two air vents, including a first air inlet 91 and a first air outlet 92; the energy storage cabinet 90 has at least two noise reduction components, including a first noise reduction component 31 opposite to the first air outlet 92 and a second noise reduction component 32 opposite to the first air inlet 91.

[0155] like Figure 2 , Figure 3 and Figure 5 As shown, the first air inlet 91 is the air intake of the energy storage cabinet 90, and a second noise reduction component 32 is correspondingly provided thereon; the first air outlet 92 is the air exhaust outlet of the energy storage cabinet 90, and a first noise reduction component 31 is correspondingly provided thereon. The first noise reduction component 31 and the second noise reduction component 32 respectively cover the noise propagation along the air intake and exhaust paths, and can separately perform noise reduction processing on the first air inlet 91 and the first air outlet 92 to meet the requirement of simultaneous noise reduction of the first air inlet 91 and the first air outlet 92, and reduce the mutual interference of noise between the first air inlet 91 and the first air outlet 92, thereby improving the overall noise reduction effect.

[0156] In some possible implementations, the first air inlet 91 and the first air outlet 92 are located on the same side of the energy storage cabinet 90; the mounting port 24 of the noise reduction device 10 surrounds the first air inlet 91 and the first air outlet 92. Figure 2 As shown, the first air inlet 91 and the first air outlet 92 are arranged on the same side and located on the surface of the energy storage cabinet 90, which can shorten the distance between the first air inlet 91 and the first air outlet 92, thereby reducing the volume of the energy storage cabinet 90. The first air inlet 91 and the first air outlet 92 are arranged along the direction away from the bottom wall of the receiving cavity 21, and the first air inlet 91 and the first air outlet 92 are located on the same vertical plane. For example, the first air inlet 91 is located below the first air outlet 92. The housing 20 can be provided with one mounting port 24, which is fitted over the first air inlet 91 and the first air outlet 92.

[0157] The noise reduction device 10 also includes a partition 33, which is disposed on the outer casing 20. Along a direction intersecting the arrangement direction of the first air inlet 91 and the second air inlet 22, the partition 33 is located between the first noise reduction component 31 and the second noise reduction component 32, and between the first air inlet 91 and the first air outlet 92. The partition 33 is used to reduce thermal short-circuiting between the first air inlet 91 and the first air outlet 92. By separating the first air inlet 91 and the first air outlet 92 with the partition 33, the air intake and exhaust can be isolated, preventing thermal short-circuiting, i.e., preventing hot air from the first air outlet 92 from being drawn back into the first air inlet 91. The partition 33 may also be provided with a groove adapted to the energy storage cabinet 90.

[0158] In an example where the outer casing 20 also has a drain outlet 28 communicating with the receiving cavity 21, the end of the partition 33 extends out of the drain outlet 28. In this way, the partition 33 can also drain water, expelling rainwater and other substances from the receiving cavity 21. For example, there may be one drain outlet 28, with one end of the partition 33 resting on the drain outlet 28, and the end of the partition 33 away from the drain outlet 28 being higher than the end of the partition 33 adjacent to the drain outlet 28 in the direction away from the bottom wall of the receiving cavity 21; or, there may be two drain outlets 28, with the partition 33 comprising two connected segments, the ends of the two segments facing away from each other resting on the corresponding drain outlet 28, and the end of each segment away from the drain outlet 28 being higher than the end of the segment adjacent to the drain outlet 28 in the direction away from the bottom wall of the receiving cavity 21. In this way, the end of the partition 33 near the drain outlet 28 is lower, and the end away from the drain outlet 28 is higher, and the partition 33 is inclined towards the drain outlet 28, facilitating the flow of water from the receiving cavity 21 to the drain outlet 28, thereby draining the water.

[0159] In some possible examples, the number of drain outlets 28 is one, and the inclination angle (i.e., slope) of the baffle 33 away from the bottom wall of the receiving cavity 21 is greater than or equal to 3° and less than or equal to 30°, for example, any one or any combination of 3°, 5°, 10°, 15°, 20°, 25°, and 30°. An inclination angle within the above range ensures water flow and reduces the space occupied by the baffle 33.

[0160] In other possible examples, there are two drain outlets 28, and the partition 33 comprises two segments, each segment having an inclination angle greater than or equal to 3° and less than or equal to 30° from the surface of the bottom wall of the receiving cavity 21, for example, any one or any combination of 3°, 5°, 10°, 15°, 20°, 25°, and 30°, to ensure water flow and reduce the space occupied. The two segments may be arranged in a... In a shape, the inclination angles of the two segments can be the same or different.

[0161] To reduce sound leakage from the drain outlet 28, the noise reduction device 10 also includes a drainage sound-absorbing component 46. The drainage sound-absorbing component 46 is disposed on the side of the partition 33 facing away from the bottom wall of the receiving cavity 21 and adjacent to the drain outlet 28. A gap exists between the drainage sound-absorbing component 46 and the partition 33. The drainage sound-absorbing component 46 can rest against the side wall of the receiving cavity 21, adjacent to the drain outlet 28. The drainage sound-absorbing component 46 is located on the side of the partition 33 facing away from the bottom wall of the receiving cavity 21, such as... Figure 4 As shown, the drainage sound-absorbing component 46 is located above the partition 33. A gap is also provided between the drainage sound-absorbing component 46 and the partition 33 for drainage.

[0162] In some possible examples, the partition 33 has a boss on the side facing away from the bottom wall of the receiving cavity 21. One end of the drainage sound-absorbing component 46 abuts against the noise reduction component, and the other end abuts against the boss, forming a gap; and / or, along the direction away from the bottom wall of the receiving cavity 21, the height of the gap is greater than or equal to 1 mm and less than or equal to 10 mm. The drainage sound-absorbing component 46 abuts against the boss and the noise reduction component, thereby fixing the drainage sound-absorbing component 46.

[0163] The boss is positioned opposite the noise reduction component. The boss can be a pre-embedded bolt installed in the partition 33, or it can be an integral part of the partition 33. There can be four bosses to improve the stability of the drainage sound-absorbing component 46. The gap between the partition 33 and the drainage sound-absorbing component 46 is located beside the boss, and the height of the boss is the same as the height of the gap. The height of the gap can be any one or any combination of 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, and 10mm. A gap height within this range can balance drainage and noise reduction effects.

[0164] Continue reading Figures 1 to 10 In the example where the first air inlet 91 and the first air outlet 92 are arranged along the height direction of the outer casing 20, the first noise reduction component 31 and the second noise reduction component 32 are also arranged along the height direction of the outer casing 20. The first noise reduction component 31 is located on the side of the second noise reduction component 32 away from the bottom wall of the receiving cavity 21, that is, the first noise reduction component 31 is located above the second noise reduction component 32. A second support member 26 is also provided on the side wall of the receiving cavity 21. The second support member 26 is located on the side of the partition 33 away from the bottom wall of the receiving cavity 21. The second support member 26 supports the first noise reduction component 31 to improve its stability. The second support member 26 can be welded to the outer casing 20, for example, it can be made of angle steel. The second support member 26 partially surrounds the side wall of the receiving cavity 21, for example, in a U-shape. Figure 4 As shown, the second support member 26 carries the first noise reduction component 41, the second noise reduction component 42 and the fourth noise reduction component in the first noise reduction assembly 31.

[0165] Both the first noise reduction assembly 31 and the second noise reduction assembly 32 include a first noise reduction element 41, a second noise reduction element 42, and a third noise reduction element 43 to facilitate the installation and replacement of the first noise reduction assembly 31 and the second noise reduction assembly 32. The first noise reduction element 41 and the second noise reduction element 42 of the first noise reduction assembly 31 are opposite each other and located on both sides of the first air outlet 92. Figure 5 and Figure 7 As shown, the first noise reduction component 41 of the first noise reduction assembly 31 is located on the side of the receiving cavity 21 (such as the left side), and the second noise reduction component 42 of the first noise reduction assembly 31 is located on the symmetrical side of the receiving cavity 21 (such as the right side). The third noise reduction component 43 of the first noise reduction assembly 31 is located between the first noise reduction component 41 and the second noise reduction component 42 of the first noise reduction assembly 31, and is opposite to the first air outlet 92, so as to reduce its noise.

[0166] The first noise reduction component 41 and the second noise reduction component 42 of the second noise reduction assembly 32 are opposite each other and located on both sides of the first air inlet 91. Figure 5 and Figure 7 As shown, the first noise reduction element 41 of the second noise reduction assembly 32 is located on the side of the receiving cavity 21 (such as the left side), and the second noise reduction element 42 of the first noise reduction assembly 32 is located on the symmetrical side of the receiving cavity 21 (such as the right side). The third noise reduction element 43 of the second noise reduction assembly 32 is located between the first noise reduction element 41 and the second noise reduction element 42 of the second noise reduction assembly 32, and is opposite to the first air inlet 91, so as to reduce its noise.

[0167] In some possible implementations, at least three noise reduction components of at least one of the first noise reduction component 31 and the second noise reduction component 32 further include a fourth noise reduction component. The fourth noise reduction component is disposed between the first noise reduction component 41 and the second noise reduction component 42 along a direction intersecting the axis of the mounting port 24, and is connected to at least one of the first noise reduction component 41 and the second noise reduction component 42. The fourth noise reduction component is located within the space enclosed by the first noise reduction component 41, the second noise reduction component 42, and the third noise reduction component 43. The fourth noise reduction component is located in the air inlet path and / or air outlet path. When air enters and / or exits through the vents of the housing 20 and the air vents of the energy storage cabinet 90, noise can be further absorbed or attenuated, thereby improving the noise control effect.

[0168] Understandably, when the target noise reduction amount is relatively large, at least three noise reduction components in the first noise reduction component 31 and the second noise reduction component 32 may each include a fourth noise reduction component and a corresponding connecting structure to improve the noise reduction effect. When the target noise reduction amount is not large, both the first noise reduction component 31 and the second noise reduction component 32 may not be provided with a fourth noise reduction component and a corresponding connecting component to reduce weight and simplify the noise reduction components.

[0169] In some possible implementations, the first noise reduction component 31 includes at least three noise reduction elements, including a fourth noise reduction element. The fourth noise reduction element of the first noise reduction component 31 includes at least two first noise reduction sheets 47 spaced apart. The arrangement direction of the at least two first noise reduction sheets 47 intersects the arrangement direction of the first air inlet 91 and the first air outlet 92.

[0170] At least two first noise-reducing sheets 47 are positioned opposite the first air outlet 92, guiding the exhaust air and located along the air outlet path. This multi-path sound absorption enhances the sound absorption effect and reduces noise at the first air outlet 92. The arrangement direction of the at least two first noise-reducing sheets 47 intersects (e.g., is perpendicular to) the arrangement directions of the first air inlet 91 and the first air outlet 92, which improves sound wave absorption efficiency. Figure 4 As shown, the arrangement direction of at least two first noise reduction sheets 47 is consistent with the arrangement direction of the first noise reduction element 41 and the second noise reduction element 42. The first noise reduction sheet 47 can also be louvered or columnar, etc.

[0171] The noise reduction device 10 also includes a crossbeam, the two ends of which are connected to the first noise reduction element 41 and the second noise reduction element 42 of the first noise reduction assembly 31, respectively. The crossbeam is also connected to at least two first noise reduction sheets 47. In the first noise reduction assembly 31, one end of the crossbeam is fixedly connected to the first noise reduction element 41, and the other end is fixedly connected to the second noise reduction element 42. The crossbeam is also fixedly connected to the first noise reduction sheets 47 to fix the first noise reduction sheets 47.

[0172] For example, the crossbeam includes: a first beam body 51 and at least two connecting pieces 53. The first beam body 51 is disposed on one side of at least two first noise-reducing pieces 47, and both ends of the first beam body 51 are respectively connected to the first noise-reducing element 41 and the second noise-reducing element 42 of the first noise-reducing assembly 31; at least two connecting pieces 53 are fastened to the first beam body 51, and both ends of each connecting piece 53 are connected to the same first noise-reducing piece 47. The first beam body 51 may be I-shaped and fixedly connected to the face mask 73 of the first noise-reducing element 41 and the second noise-reducing element 42 of the first noise-reducing assembly 31. The connecting pieces 53 span the first beam body 51, and both ends are fixedly connected to the same first noise-reducing piece 47, realizing the relative fixation of the first noise-reducing element 41 and the first beam body 51, and the structure is simple and easy to implement. The connecting pieces 53 may be Z-shaped or other shapes.

[0173] The first beam 51 has at least two first positioning grooves on the side opposite to the first noise reduction plate 47, and a connecting piece 53 is correspondingly arranged in each of the first positioning grooves, for example, the first positioning grooves and the connecting pieces 53 are arranged in a one-to-one correspondence. In this way, the first positioning grooves can be used to position the connecting pieces 53, making it difficult for the connecting pieces 53 to slip off the first beam 51. At the same time, the position of the first noise reduction plate 47 can be set to improve the noise reduction effect. The connecting pieces 53 and the first positioning grooves can be clearance fit or interference fit.

[0174] like Figure 2 and Figure 6 As shown, the crossbeam also includes a second beam 52, which is disposed on the side of the first noise-reducing sheet 47 away from the first beam 51. At least two second positioning grooves are provided at the end of the second beam 52 facing the first beam 51, and the first noise-reducing sheet 47 is correspondingly disposed within each of the second positioning grooves. For example, the first beam 51 is located above the first noise-reducing sheet 47, and the second beam 52 is located below the first noise-reducing sheet 47. The second beam 52 can be I-shaped and fixedly connected to the faceplates 73 of the first noise-reducing component 41 and the second noise-reducing component 42 of the first noise-reducing assembly 31. The second beam 52 provides support and positioning for the first noise-reducing sheet 47, ensuring its stability and sound absorption efficiency. The second positioning grooves can be arranged one-to-one with the first noise-reducing sheet 47, and can be either clearance-fitted or interference-fitted with the first noise-reducing sheet 47.

[0175] At least two sets of crossbeams are provided, and the arrangement direction of the at least two sets of crossbeams intersects with the arrangement direction of at least two first noise-reducing sheets 47 to improve the stability of the first noise-reducing sheets 47. For example, the arrangement direction of the at least two sets of crossbeams may be consistent with the extension direction of the first noise-reducing sheets 47 and perpendicular to the arrangement direction of the at least two first noise-reducing sheets 47. Figure 4 As shown, there are two sets of crossbeams. The top of the first noise reduction sheet 47 is provided with two first beams 51, and the bottom of the first noise reduction sheet 47 is provided with two second beams 52.

[0176] In some possible implementations, at least three noise reduction elements of the second noise reduction component 32 include a fourth noise reduction element, and the fourth noise reduction element of the second noise reduction component 32 includes at least two second noise reduction sheets 48 spaced apart; the at least two second noise reduction sheets 48 are arranged in a direction away from the first air inlet 91.

[0177] At least two second noise-reducing sheets 48 are positioned opposite the first air inlet 91, guiding the incoming air and located along the air intake path. Through multi-path sound absorption, they improve the sound absorption effect and reduce the noise at the first air inlet 91. The arrangement direction of at least two first noise-reducing sheets 47 intersects (e.g., is perpendicular to) the arrangement direction of the first air inlet 91 and the first air outlet 92, which can improve the sound wave absorption efficiency. Figure 4 As shown, the arrangement direction of at least two second noise reduction sheets 48 intersects (e.g., is perpendicular to) the arrangement direction of the first noise reduction element 41 and the second noise reduction element 42. The second noise reduction sheet 48 can also be louvered, columnar, etc.

[0178] The noise reduction device 10 also includes at least two second connectors 62. A portion of the second connectors 62 connect the fourth noise reduction component and the first noise reduction component 41 in the second noise reduction assembly 32, and the remaining at least a portion of the second connectors 62 in the second noise reduction assembly 32 connect the fourth noise reduction component and the second noise reduction component 42.

[0179] At least two second connectors 62 are used to connect the fourth noise-reducing component 32 to the first noise-reducing component 41, and to connect the fourth noise-reducing component 32 to the second noise-reducing component 42, forming a multi-point fixation to reduce displacement caused by vibration. Simultaneously, the detachable nature of the second connectors 62 supports flexible maintenance of the fourth noise-reducing component, thereby extending the service life of the noise reduction device 10. The second connectors 62 can adopt a Z-shaped structure and are connected to the first noise-reducing component 41, the second noise-reducing component 42, and the fourth noise-reducing component via bolts or the like.

[0180] In some possible implementations, at least three noise reduction components of the first noise reduction assembly 31 and the second noise reduction assembly 32 further include a fifth noise reduction component 44. Along a direction intersecting the axis of the mounting opening 24, the fifth noise reduction component 44 is disposed between the first noise reduction component 41 and the second noise reduction component 42, and connected to at least one of the first noise reduction component 41 and the second noise reduction component 42. In the first noise reduction assembly 31, the fifth noise reduction component 44 is disposed opposite to the third noise reduction assembly. In the second noise reduction assembly 32, the fifth noise reduction component is disposed at one end of the first noise reduction component 41, the second noise reduction component 42, and the third noise reduction component 43 away from the bottom wall of the receiving cavity 21. The addition of the fifth noise reduction component 44 to the first noise reduction assembly 31 and the second noise reduction assembly 32 can further improve the noise reduction effect.

[0181] like Figure 2 , Figure 4 and Figure 5 As shown, the fifth noise reduction element 44 in the first noise reduction assembly 31 is located on the surface (e.g., the back) of the receiving cavity 21 near the energy storage cabinet 90, opposite to the third noise reduction element 43. In the first noise reduction assembly 41, the fifth noise reduction element 44, the first noise reduction element 41, the third noise reduction element 43, and the second noise reduction element 42 are arranged sequentially to form a cavity, and a fourth noise reduction element is disposed within the cavity, for example. In the second noise reduction assembly 32, the fifth noise reduction element 44 is located at one end of the first noise reduction element 41, the second noise reduction element 42, and the third noise reduction element 43, opposite to the second air inlet 22. In the second noise reduction assembly 42, the first noise reduction element 41, the second noise reduction element 42, and the third noise reduction element 43 surround the fifth noise reduction element 44 to form a cavity, and a fourth noise reduction element is disposed within the cavity, for example.

[0182] In the first noise reduction component 31 and the second noise reduction component 32, the fifth noise reduction component 44 can be connected to the first noise reduction component 41 and the second noise reduction component 42 to increase the overall stability of the noise reduction components and support the independent replacement of the fifth noise reduction component 44.

[0183] For example, the noise reduction device 10 further includes at least two third connectors 63. A portion of the third connectors 63 connect the corresponding fifth noise reduction component 44 to the first noise reduction component 41, and the remaining at least a portion of the third connectors 63 connect the corresponding fifth noise reduction component 44 to the second noise reduction component 42. Utilizing at least two third connectors 63 to form multi-point fixation reduces displacement caused by vibration. Simultaneously, the detachable nature of the third connectors 63 supports flexible maintenance of the fifth noise reduction component 44, thereby extending the service life of the noise reduction device 10. The third connectors 63 can adopt a Z-shaped structure and are connected to the first noise reduction component 41, the second noise reduction component 42, and the fifth noise reduction component 44 via bolts or the like.

[0184] like Figures 1 to 10 As shown, in the first noise reduction assembly 31, the first noise reduction element 41 is opposite to the second noise reduction element 42, the third noise reduction element 43 is opposite to the fifth noise reduction element 44, and the fourth noise reduction element is located within the cavity enclosed by the first noise reduction element 41, the second noise reduction element 42, the third noise reduction element 43, and the fifth noise reduction element 44. The fifth noise reduction element 44 is located above the first air inlet 91, and one end of the fourth noise reduction element protrudes beyond the corresponding end of the fifth noise reduction element 44. The cavity sound-absorbing element 45 is located below the fourth noise reduction element or can be configured as needed. The ends of the first noise reduction element 41, the second noise reduction element 42, and the third noise reduction element 43 adjacent to the bottom wall of the receiving cavity 21 are supported and limited by the second support element 26 on the side wall of the receiving cavity 21, and the ends of the first noise reduction element 41, the second noise reduction element 42, the third noise reduction element 43, and the fifth noise reduction element 44 away from the bottom wall of the receiving cavity 21 are limited by the mesh plate 80 of the second air outlet 23.

[0185] In the second noise reduction assembly 32, the first noise reduction component 41 is opposite to the second noise reduction component 42, the third noise reduction component 43 is opposite to the fourth noise reduction component, and the fifth noise reduction component 44 is opposite to the second air inlet 22. The fourth noise reduction component is located within the cavity enclosed by the first noise reduction component 41, the second noise reduction component 42, the third noise reduction component 43, and the fifth noise reduction component 44. The fifth noise reduction component 44 is located above the fourth noise reduction component and is spaced apart from it. One end of the first noise reduction component 41, the second noise reduction component 42, and the third noise reduction component 43 adjacent to the bottom wall of the receiving cavity 21 is limited by the mesh plate 80 of the second air inlet 22.

[0186] The noise reduction device 10 provided in this embodiment includes a housing 20 and a noise reduction component. The housing 20 has a receiving cavity 21, and a vent and a mounting port 24 communicating with the receiving cavity 21. The mounting port 24 is configured to face and communicate with the vent of the energy storage cabinet 90. The noise reduction component is disposed within the receiving cavity 21 and is used to reduce the noise of the vent. The noise reduction component includes at least two detachably connected noise reduction elements. The noise reduction component is located in the noise propagation path of the vent of the energy storage cabinet 90 and can absorb or attenuate the noise of the vent of the energy storage cabinet 90. The noise reduction component is detachable and replaceable relative to the housing 20, thereby extending the service life of the noise reduction device 10 and reducing the cost of the noise reduction structure during the life cycle of the energy storage cabinet 90. The noise reduction component includes at least two noise reduction elements, which are detachably connected, making disassembly and assembly convenient. Failed noise reduction elements can be replaced to restore the noise reduction function. Furthermore, the noise reduction component and the noise reduction elements can be modularly designed, with good interchangeability.

[0187] See Figures 1 to 10 This application also provides an energy storage device, including an energy storage cabinet 90 and a noise reduction device 10. The energy storage cabinet 90 has an air vent, and the noise reduction device 10 is connected to the energy storage cabinet 90 to reduce the noise of the air vent. The energy storage cabinet 90 may contain batteries and an air conditioner for regulating the temperature of the batteries. The specific structure of the noise reduction device 10 can be referred to above and will not be repeated here.

[0188] The energy storage cabinet 90 includes a main body 93 and a protrusion 94. The protrusion 94 is located on one side of the main body 93 and has an air vent. The mounting port 24 of the noise reduction device 10 is fastened to the protrusion 94. The main body 93 can be rectangular. The protrusion 94 is adapted to the mounting port 24 to facilitate the installation of the noise reduction device 10 on the energy storage cabinet 90, thereby reducing noise at the air vent of the energy storage cabinet 90.

[0189] In some possible examples, the outer peripheral surface of the protrusion 94 is also provided with a stop, which is spaced apart from the body 93 and is used to limit the noise reduction device 10; one of the body 93 and the noise reduction device 10 is provided with a slot 95, and the other is provided with a buckle 27, which engages with the slot 95 to limit and fix the noise reduction device 10.

[0190] The protrusion 94 is provided with a stop block located on its outer peripheral surface. The stop block is spaced apart from the body 93 and may be strip-shaped. The stop block may extend along the outer periphery of the protrusion 94, partially surrounding it. The stop block is located on one side of the protrusion 94, for example, at the top of the protrusion 94. The stop block and the protrusion 94 may be an integral structure.

[0191] One of the main body 93 and the noise reduction device 10 is provided with a slot 95, and the other is provided with a matching buckle 27 to achieve the connection between the main body 93 and the noise reduction device 10. For example, the main body 93 of the energy storage cabinet 90 is provided with a buckle 27, and the outer shell 20 of the noise reduction device 10 is provided with a slot 95, with the buckle 27 engaging in the slot 95. The slot 95 and the stop can be located on opposite sides of the protrusion 94, for example, the stop is located at the top of the protrusion 94, and the slot 95 is located below the protrusion 94, to improve the stability of the connection between the energy storage cabinet 90 and the noise reduction device 10.

[0192] like Figures 1 to 10 As shown, in the noise reduction device 10, after the cavity sound-absorbing component 45 is installed and the noise reduction assembly is assembled, it falls from top to bottom onto the protrusion 94 of the energy storage cabinet 90. The stop block at the top of the protrusion 94 provides guidance and vertical positioning, the slot 95 at the bottom of the protrusion 94 provides front-back positioning, and the side of the protrusion 94 provides left-right positioning. The first noise reduction assembly 31 is positioned by the top mesh plate 80, and the second noise reduction assembly 32 is positioned by the bottom mesh plate 80.

[0193] The energy storage device in this embodiment includes an energy storage cabinet 90 and a noise reduction device 10. The energy storage cabinet 90 has an air vent, and the noise reduction device 10 is connected to the energy storage cabinet 90 to reduce the noise of the air vent. The energy storage device includes the aforementioned noise reduction device 10, and therefore has at least the advantages of being easy to disassemble and replace and having a long service life. The specific effects are described above and will not be repeated here.

[0194] The embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between embodiments can be referred to accordingly. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this specification are only used to explain the relative positional relationships and motion relationships between components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indications will also change accordingly.

[0195] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0196] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection via an intermediate medium, or the internal connection or interaction between two components. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this application based on the specific circumstances. The terms "first," "second," "third," etc. (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0197] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A noise reduction device, characterized in that, include: The outer casing (20) has a receiving cavity (21) and a vent and a mounting port (24) communicating with the receiving cavity (21), the mounting port (24) being configured to be opposite to and communicating with the vent of the energy storage cabinet (90); A noise reduction assembly is disposed within the receiving cavity (21) and is used to reduce the noise of the air outlet. The noise reduction assembly includes at least two noise reduction components that are detachably connected.

2. The noise reduction device according to claim 1, characterized in that, A portion of the at least three noise reduction components are disposed on the side wall of the receiving cavity (21), and the remaining portion of the noise reduction components are disposed between the noise reduction components on the side wall of the receiving cavity (21) and connected to the noise reduction components on the side wall of the receiving cavity (21).

3. The noise reduction device according to claim 2, characterized in that, At least three of the noise reduction components include: The first noise reduction component (41) is disposed on the side wall of the receiving cavity (21); The second noise reduction component (42) is disposed on the side wall of the receiving cavity (21) and is opposite to the first noise reduction component (41) along the direction intersecting the axis of the mounting port (24); The third noise reduction component (43) is disposed on the side wall of the receiving cavity (21) along the direction intersecting the axis of the mounting port (24). The third noise reduction component (43) is disposed between the first noise reduction component (41) and the second noise reduction component (42) and abuts against the first noise reduction component (41) and the second noise reduction component (42). The third noise reduction component (43) is configured to face the air vent of the energy storage cabinet (90).

4. The noise reduction device according to claim 3, characterized in that, The end faces of the first noise reduction element (41) and the third noise reduction element (43) adjacent to each other are both inclined surfaces, and the inclined surface of the first noise reduction element (41) is in contact with the corresponding inclined surface of the third noise reduction element (43); and / or, The end faces of the second noise reduction component (42) and the third noise reduction component (43) adjacent to each other are both inclined surfaces, and the inclined surface of the second noise reduction component (42) is in contact with the corresponding inclined surface of the third noise reduction component (43).

5. The noise reduction device according to claim 3, characterized in that, The noise reduction device (10) further includes: A cavity sound-absorbing component (45) is disposed in the receiving cavity (21) and connected to the noise reduction component. The cavity sound-absorbing component (45) is configured to be offset from the air vent of the energy storage cabinet (90). The cavity sound-absorbing component (45) includes at least two Helmholtz resonant cavities for reducing low-frequency characteristic frequency noise in the receiving cavity (21).

6. The noise reduction device according to claim 5, characterized in that, The noise reduction device (10) further includes: At least two first connectors (61), a portion of the first connectors (61) connect the cavity sound-absorbing component (45) to the first noise-reducing component (41), and the remaining at least a portion of the first connectors (61) connect the cavity sound-absorbing component (45) to the second noise-reducing component (42). A first support member (64) is disposed at one end of the cavity sound-absorbing member (45) near the bottom wall of the receiving cavity (21) for supporting the cavity sound-absorbing member (45). The first support member (64) is configured to be connected to the energy storage cabinet (90).

7. The noise reduction device according to any one of claims 3-6, characterized in that, The energy storage cabinet (90) has at least two air vents, and the at least two air vents include a first air inlet (91) and a first air outlet (92). The number of noise reduction components is at least two, and the at least two noise reduction components include a first noise reduction component (31) opposite to the first air outlet (92) and a second noise reduction component (32) opposite to the first air inlet (91).

8. The noise reduction device according to claim 7, characterized in that, The first air inlet (91) and the first air outlet (92) are located on the same side of the energy storage cabinet (90); The mounting port (24) of the noise reduction device (10) surrounds the first air inlet (91) and the first air outlet (92).

9. The noise reduction device according to claim 7, characterized in that, The noise reduction device (10) further includes: A partition (33) is disposed on the outer shell (20) along a direction intersecting the arrangement direction of the first air inlet (91) and the first air outlet (92). The partition (33) is located between the first noise reduction component (31) and the second noise reduction component (32), and between the first air inlet (91) and the first air outlet (92). The partition (33) is used to reduce thermal short circuit between the first air inlet (91) and the first air outlet (92).

10. The noise reduction device according to claim 9, characterized in that, The outer shell (20) is also provided with a drain (28) communicating with the receiving cavity (21), and the end of the partition (33) extends out of the drain (28).

11. The noise reduction device according to claim 10, characterized in that, The number of drain outlets (28) is one, and one end of the partition (33) is attached to the drain outlet (28). Along the direction away from the bottom wall of the receiving cavity (21), the end of the partition (33) away from the drain outlet (28) is higher than the end of the partition (33) adjacent to the drain outlet (28); or, The number of drain outlets (28) is two. The partition (33) includes two connected segments. The two segments are respectively placed at opposite ends of the corresponding drain outlets (28). Along the direction away from the bottom wall of the receiving cavity (21), the end of each segment away from the drain outlet (28) is higher than the end of the segment adjacent to the drain outlet (28).

12. The noise reduction device according to claim 11, characterized in that, When the number of drain outlets (28) is one, the inclination angle of the surface of the partition (33) away from the bottom wall of the receiving cavity (21) is greater than or equal to 3° and less than or equal to 30°; When there are two drain outlets (28), the tilt angle of the surface of each segment away from the bottom wall of the receiving cavity (21) is greater than or equal to 3° and less than or equal to 30°.

13. The noise reduction device according to claim 10, characterized in that, The noise reduction device (10) further includes: A drainage sound-absorbing component (46) is disposed on the side of the partition (33) away from the bottom wall of the receiving cavity (21) and adjacent to the drain outlet (28). There is also a gap between the drainage sound-absorbing component (46) and the partition (33).

14. The noise reduction device according to claim 13, characterized in that, The partition (33) has a protrusion on the side facing away from the bottom wall of the receiving cavity (21). One end of the drainage sound-absorbing component (46) abuts against the noise reduction assembly, and the other end abuts against the protrusion, forming the gap; and / or, Along the direction away from the bottom wall of the receiving cavity (21), the height of the gap is greater than or equal to 1 mm and less than or equal to 10 mm.

15. The noise reduction device according to claim 7, characterized in that, The at least three noise reduction components of at least one of the first noise reduction component (31) and the second noise reduction component (32) further include: The fourth noise reduction component is disposed between the first noise reduction component (41) and the second noise reduction component (42) along a direction intersecting the axis of the mounting port (24), and is connected to at least one of the first noise reduction component (41) and the second noise reduction component (42). The fourth noise reduction component is located within the space enclosed by the first noise reduction component (41), the second noise reduction component (42) and the third noise reduction component (43).

16. The noise reduction device according to claim 15, characterized in that, The first noise reduction component (31) includes the fourth noise reduction component, and the fourth noise reduction component of the first noise reduction component (31) includes at least two first noise reduction sheets (47) spaced apart. The arrangement direction of the at least two first noise reduction plates (47) intersects with the arrangement direction of the first air inlet (91) and the first air outlet (92).

17. The noise reduction device according to claim 16, characterized in that, The noise reduction device (10) further includes: The crossbeam is connected at both ends to the first noise reduction component (41) and the second noise reduction component (42) of the first noise reduction assembly (31), and the crossbeam is also connected to the at least two first noise reduction sheets (47).

18. The noise reduction device according to claim 17, characterized in that, The crossbeam includes: The first beam (51) is disposed on one side of the at least two first noise reduction sheets (47), and the two ends of the first beam (51) are respectively connected to the first noise reduction component (41) and the second noise reduction component (42) of the first noise reduction assembly (31). At least two connecting pieces (53) are fastened to the first beam (51), and both ends of each connecting piece (53) are connected to the same first noise reduction piece (47).

19. The noise reduction device according to claim 18, characterized in that, The first beam (51) has at least two first positioning grooves on the side opposite to the first noise reduction plate (47), and the connecting piece (53) is correspondingly disposed in the first positioning groove; and / or, The crossbeam further includes: a second beam (52) disposed on the side of the first noise-reducing sheet (47) away from the first beam (51), wherein at least two second positioning grooves are provided at the end of the second beam (52) facing the first beam (51), and the first noise-reducing sheet (47) is correspondingly disposed in the second positioning groove; and / or, The crossbeams are provided in at least two sets, and the arrangement direction of the at least two sets of crossbeams intersects with the arrangement direction of the at least two first noise reduction sheets (47).

20. The noise reduction device according to claim 15, characterized in that, The at least three noise reduction elements of the second noise reduction component (32) include the fourth noise reduction element, and the fourth noise reduction element of the second noise reduction component (32) includes at least two second noise reduction sheets (48) spaced apart. The at least two second noise reduction plates (48) are arranged in a direction away from the first air inlet (91).

21. The noise reduction device according to claim 20, characterized in that, The noise reduction device (10) further includes: At least two second connectors (62) connect the fourth noise reduction component in the second noise reduction assembly (32) to the first noise reduction component (41), and the remaining at least a portion of the second connectors (62) connect the fourth noise reduction component to the second noise reduction component (42).

22. The noise reduction device according to claim 7, characterized in that, The at least three noise reduction components of the first noise reduction component (31) and the second noise reduction component (32) further include: The fifth noise reduction component (44) is disposed between the first noise reduction component (41) and the second noise reduction component (42) along a direction intersecting the axis of the mounting port (24), and is connected to at least one of the first noise reduction component (41) and the second noise reduction component (42); In the first noise reduction component (31), the fifth noise reduction component (44) is disposed opposite to the third noise reduction component; In the second noise reduction component (32), the fifth noise reduction component is disposed at one end of the first noise reduction component (41), the second noise reduction component (42) and the third noise reduction component (43) away from the bottom wall of the receiving cavity (21).

23. The noise reduction device according to claim 22, characterized in that, The noise reduction device (10) further includes: At least two third connectors (63) are connected, a portion of which are connected to the corresponding fifth noise reduction element (44) and the first noise reduction element (41), and the remaining at least a portion of which are connected to the corresponding fifth noise reduction element (44) and the second noise reduction element (42).

24. The noise reduction device according to claim 9, characterized in that, The first air inlet (91) and the first air outlet (92) are arranged along the height direction of the outer casing (20); The side wall of the receiving cavity (21) is also provided with a second support member (26), which is located on the side of the partition (33) away from the bottom wall of the receiving cavity (21) and carries the first noise reduction component (31).

25. The noise reduction device according to any one of claims 1-6, characterized in that, The noise reduction component includes: Sound-absorbing materials (71); Fiberglass cloth (72) wraps the sound-absorbing material (71); A face mask (73) is placed over the glass fiber cloth (72), and at least a portion of the surface of the face mask (73) is provided with a perforated structure.

26. The noise reduction device according to claim 25, characterized in that, The mask (73), except for the surface facing away from the bottom wall of the receiving cavity (21), has at least a portion of the remaining surfaces having the perforated structure; and / or, The sound-absorbing material (71) includes at least one of glass wool, polyester fiber, polyethersulfone fiber, polypropylene and polyester composite fiber, and aluminum foam; and / or, The thickness of the sound-absorbing material (71) is greater than or equal to 15 mm and less than or equal to 150 mm; and / or, The thickness of the fiberglass cloth (72) is greater than or equal to 0.1 mm and less than or equal to 1.0 mm; and / or, The thickness of the face mask (73) is greater than or equal to 0.8 mm and less than or equal to 2.5 mm; and / or, The noise reduction component also includes a waterproof and breathable membrane, which wraps the fiberglass cloth (72) and is in contact with the face mask (73).

27. The noise reduction device according to any one of claims 1-6, characterized in that, The noise reduction device (10) further includes: A mesh plate (80) is connected to the outer casing (20) and covers the vent.

28. The noise reduction device according to claim 27, characterized in that, The number of the ventilation openings is at least two, and the at least two ventilation openings include a second air inlet and a second air outlet; The second air inlet and the second air outlet are arranged opposite each other along the height direction of the outer shell (20), and the second air inlet and the second air outlet are respectively provided with the mesh plate (80).

29. The noise reduction device according to claim 27, characterized in that, The noise reduction device (10) further includes: A rain shield is disposed on the outer casing (20) and located on the side of the vent facing away from the bottom wall of the receiving cavity (21), the rain shield being spaced apart from the vent; and / or, The thickness of the outer casing (20) is greater than or equal to 0.8 mm and less than or equal to 2.5 mm; and / or, The outer casing (20) is made of at least one of stainless steel, zinc-iron composite material, aluminum, and plastic; and / or, The outer casing (20) is also provided with a handle (25), which is located outside the receiving cavity (21); and / or, The outer shell (20) has a chamfer or rounded corner on the side opposite to the energy storage cabinet (90).

30. An energy storage device, characterized in that, include: The energy storage cabinet (90) has an air vent; The noise reduction device (10) as described in any one of claims 1-29 is connected to the energy storage cabinet (90) and is used to reduce the noise of the air outlet.

31. The energy storage device according to claim 30, characterized in that, The energy storage cabinet (90) includes: a main body (93) and a protrusion (94) located on one side of the main body (93), wherein the protrusion (94) is provided with the air vent; The mounting port (24) of the noise reduction device (10) is fastened to the protrusion (94).

32. The energy storage device according to claim 31, characterized in that, The outer peripheral surface of the protrusion (94) is also provided with a stop block, which is spaced apart from the body (93) and is used to limit the noise reduction device (10); One of the main body (93) and the noise reduction device (10) is provided with a slot (95), and the other is provided with a buckle (27), and the buckle (27) and the slot (95) are engaged.

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