Ventilation apparatus and energy storage system

Abstract

A ventilation apparatus and an energy storage system, relating to the technical fields of energy storage and ventilation. The ventilation apparatus comprises: a frame provided with a first ventilation opening and a second ventilation opening; first cavity plates provided in the frame and connected to the frame, wherein each first cavity plate is provided with a plurality of first protruding sections; and second cavity plates provided in the frame and connected to the frame, wherein each second cavity plate is provided with second protruding sections, the second protruding sections and the first protruding sections have opposite protruding directions, and air ducts in communication with the first ventilation opening and the second ventilation opening are defined between the first cavity plates and the second cavity plates. In this way, by means of the first protruding sections of the first cavity plates and the second protruding sections of the second cavity plates, the air ducts are of a continuous variable-cavity structure, so that sound waves of noise are continuously refracted and reflected back in the air ducts, thereby reducing noise generated during ventilation and avoiding affecting external environments.

Description

Ventilation devices and energy storage systems

[0001] This application claims priority to Chinese Patent Application No. 2024226415753, filed on October 30, 2024, entitled “Ventilation Device and Energy Storage System”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application belongs to the field of energy storage and ventilation technology, and specifically relates to a ventilation device and energy storage system. Background Technology

[0003] Currently, energy storage systems require ventilation and air circulation with the external environment to cool and dissipate heat from internal electrical components, thereby ensuring the normal operation of the energy storage system. However, the ventilation process of energy storage systems generates significant noise, affecting the external environment. Summary of the Invention

[0004] Purpose of this application: This application provides a ventilation device, and this application also provides an energy storage system.

[0005] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims.

[0006] This application provides a ventilation device, comprising:

[0007] The frame has a first vent and a second vent.

[0008] Multiple first cavity plates are disposed within the frame and connected to the frame, and each first cavity plate has multiple first protrusions.

[0009] A second cavity plate is disposed within and connected to the frame. The second cavity plate has a plurality of second protruding sections. The protrusions of the second protruding sections face opposite directions to those of the first protruding sections.

[0010] An air duct connecting the first vent and the second vent is formed between the first cavity plate and the second cavity plate.

[0011] In some embodiments, it also includes:

[0012] Multiple baffles are disposed within the air duct. Each baffle includes a first surface and a second surface facing away from each other. The first surface is a convex surface facing the first air vent, and the second surface is a concave surface facing the second air vent.

[0013] In some embodiments, the first protruding section and the second protruding section are disposed opposite to each other, the air duct has a plurality of air duct sections connected end to end, and the air duct sections are located between the first protruding section and the second protruding section. Each air duct section has a gradually expanding section, a widening section and a gradually contracting section connected sequentially along the first direction. At least a portion of the baffle is disposed in the gradually expanding section, and the direction in which the first vent points to the second vent is the first direction.

[0014] In some embodiments, the duct segment further has a narrow segment that connects the tapering segment and the expanding segment in the next duct segment.

[0015] In some embodiments, the device further includes: sound-absorbing cotton, which is at least partially disposed on the first cavity plate, and / or, which is at least partially disposed on the second cavity plate.

[0016] In some embodiments, the sound-absorbing cotton is at least partially disposed on the first surface, and / or, the sound-absorbing cotton is at least partially disposed on the second surface.

[0017] In some embodiments, a plurality of air ducts are included, and the plurality of air ducts are arranged within the frame.

[0018] In some embodiments, both the first cavity plate and the second cavity plate are corrugated.

[0019] In some embodiments, the first cavity plate is welded to the frame, the second cavity plate is welded to the frame, and the baffle is welded to the frame.

[0020] In some embodiments, it also includes:

[0021] A ventilation port assembly is provided to cover the first ventilation port, and the ventilation port assembly has multiple through holes that communicate with the first ventilation port.

[0022] Accordingly, this application also provides an energy storage system, including:

[0023] Energy storage cabinet;

[0024] The ventilation device described in any of the above embodiments is installed on the energy storage cabinet.

[0025] This application provides a ventilation device comprising: a frame having a first ventilation opening and a second ventilation opening; a first cavity plate disposed within and connected to the frame, the first cavity plate having a plurality of first protruding segments; and a second cavity plate disposed within and connected to the frame, the second cavity plate having a second protruding segment; the second protruding segment having a protrusion orientation opposite to that of the first protruding segment; and an air duct connecting the first ventilation opening and the second ventilation opening being formed between the first cavity plate and the second cavity plate. Thus, the first protruding segments of the first cavity plate and the second protruding segments of the second cavity plate create a continuous variable cavity structure in the air duct, causing sound waves to be continuously refracted and reflected back within the air duct, thereby reducing noise generated during ventilation and preventing impact on the external environment.

[0026] It is understood that the energy storage system provided in this application embodiment includes all the technical features and effects of the above-mentioned ventilation device, and will not be repeated here.

[0027] After reading and understanding the accompanying diagrams and detailed descriptions, the other aspects can be understood. Attached Figure Description

[0028] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0029] Figure 1 is a schematic diagram of the ventilation device provided in an embodiment of this application;

[0030] Figure 2 is a right view of the ventilation device provided in an embodiment of this application;

[0031] Figure 3 is a schematic diagram of the first cross section of AA in Figure 2;

[0032] Figure 4 is a schematic diagram of the second cross section of AA in Figure 2;

[0033] Figure 5 is a cross-sectional schematic diagram of the first cavity plate and baffle in the ventilation device provided in the embodiment of this application;

[0034] Figure 6 is a cross-sectional schematic diagram of the baffle in the ventilation device provided in the embodiment of this application;

[0035] Figure 7 is a schematic diagram of the energy storage system provided in an embodiment of this application;

[0036] Figure 8 is a front view of the energy storage system provided in an embodiment of this application;

[0037] Figure 9 is a schematic diagram of the cross-section of BB in Figure 8.

[0038] Reference numerals: 10-Frame; 11-First vent; 12-Second vent; 20-First cavity plate; 21-First protruding section; 30-Air duct; 31-Air duct section; 311-Narrow section; 312-Expanding section; 313-Wide section; 314-Converging section; 40-Baffle; 41-First surface; 42-Second surface; 50-Sound-absorbing cotton; 60-Ventilation port assembly; 61-Through hole; 70-Box; 71-Air inlet; 72-Air outlet; 80-Second cavity plate; 81-Second protruding section; X-First direction; Y-Second direction. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0041] The following disclosure provides many different implementations or examples for carrying out different structures of this application. To simplify the disclosure of this application, the components and arrangements of specific examples are described below. Of course, these are merely examples and are not intended to limit this application.

[0042] This application provides a ventilation device. Please refer to Figures 1, 2, 3 and 4. Figure 1 shows a structural schematic diagram of the ventilation device provided in this application embodiment; Figure 2 shows a right view of the ventilation device provided in this application embodiment; Figure 3 shows a first cross-sectional schematic diagram of AA in Figure 2; Figure 4 shows a second cross-sectional schematic diagram of AA in Figure 2. The ventilation device provided in this application embodiment includes: a frame 10, a first cavity plate 20, and a second cavity plate 80; wherein, the frame 10 has a first ventilation opening 11 and a second ventilation opening 12, and the direction of the first ventilation opening 11 pointing to the second ventilation opening 12 is a first direction X; the first cavity plate 20 is disposed within the frame 10 and connected to the frame 10, and the first cavity plate 20 has a plurality of first protrusions 21; the second cavity plate 80 is disposed within the frame 10 and connected to the frame 10, and the second cavity plate 80 has a plurality of second protrusions 81, and the protrusions of the second protrusions 81 and the first protrusions 21 are oriented in opposite directions; an air duct 30 connecting the first ventilation opening 11 and the second ventilation opening 12 is formed between the first cavity plate 20 and the second cavity plate 80. It should be noted that the opposite orientation of the first protruding segment 21 and the second protruding segment 81 means that the first protruding segment 21 protrudes along the second direction Y, which intersects the first direction X, while the second protruding segment 81 protrudes in the opposite direction of the second direction Y. Alternatively, as shown in Figure 5, the first protruding segment 21 protrudes upwards, and the second protruding segment 81 protrudes downwards. The space between the multiple first protruding segments 21 and the multiple second protruding segments 81 forms the air duct 30. Thus, through the multiple first protruding segments 21 of the first cavity plate 20 and the second protruding segments 81 of the second cavity plate 80, the air duct 30 becomes a continuous variable cavity structure. Noise waves are continuously refracted and bounced back within the air duct 30, weakening the sound waves and thus reducing noise generated during ventilation, preventing impact on the external environment.

[0043] In some embodiments, the ventilation device further includes a plurality of baffles 40 disposed within the air duct 30. Referring to Figure 6, each baffle 40 includes a first surface 41 and a second surface 42 facing away from each other. The first surface 41 is a convex surface facing the first ventilation opening 11, and the second surface 42 is a concave surface facing the second ventilation opening 12. The second direction Y intersects the first direction X. Thus, through the plurality of first protrusions 21 of the first cavity plate 20 and the second protrusions 81 of the second cavity plate 80, the air duct 30 becomes a continuous variable cavity structure. Combined with the baffles 40, sound waves are continuously refracted and rebounded in the air duct 30 by the inner walls of the first protrusions 21, the inner walls of the second protrusions 81, the first surface 41, and the second surface 42. At the same time, the second surface 42 of the baffle 40 can block sound waves from passing through the middle of the air duct 30, thereby reducing the noise generated during ventilation and avoiding impact on the external environment.

[0044] Specifically, please refer to Figure 3 again. During use, the ventilation device can draw in air along the first direction X through the first vent 11 and exhaust air through the second vent 12. The sound waves of noise are transmitted from the second vent 12 to the first vent 11. The direction of air intake in the ventilation device is opposite to the direction of sound wave transmission. At this time, the airflow used for ventilation enters the air duct 30 through the first vent 11. Since the first surface 41 is a convex surface facing the first vent 11, the airflow is guided by the first surface 41, reducing the air resistance in the air duct 30 and maintaining the ventilation effect of the ventilation device. It can be understood that, in order to further enhance the guiding effect of the first surface 41, the baffle 40 can be a V-shaped plate. When the noise waves enter the air duct 30 through the second vent 12, the air duct 30 becomes a continuous variable cavity structure due to the multiple first protrusions 21 of the first cavity plate 20 and the second protrusions 81 of the second cavity plate 80. After the noise waves come into contact with the surfaces of the first cavity plate 20 and the second cavity plate 80 facing the air duct 30, they are continuously refracted and bounced back. At the same time, due to the setting of the baffle 40, when the noise waves come into contact with the first surface 41 or the second surface 42, they are also continuously refracted and bounced back. In addition, since the second surface 42 is a concave surface facing the second vent 12, it can also block the sound waves flowing through the middle of the air duct 30 but not coming into contact with the first cavity plate 20 and the second cavity plate 80, thereby continuously weakening the sound waves and reducing the noise.

[0045] Similarly, referring to Figure 4 again, during use, the ventilation device can also operate in the opposite direction of the first direction X. Air enters through the second vent 12 and exits through the first vent 11. Noise waves also travel from the second vent 12 to the first vent 11. The direction of air intake and the direction of noise wave transmission are the same in the ventilation device. When air enters the duct 30 through the second vent 12, due to the gap between the first cavity plate 20 and the baffle 40, and between the second cavity plate 80 and the baffle 40, the air can bypass the baffle 40 and exit the duct 30, maintaining the ventilation effect of the ventilation device. When the noise waves enter the air duct 30 through the second vent 12, the air duct 30 becomes a continuous variable cavity structure due to the multiple first protrusions 21 of the first cavity plate 20 and the second protrusions 81 of the second cavity plate 80. After the noise waves come into contact with the surfaces of the first cavity plate 20 and the second cavity plate 80 facing the air duct 30, they are continuously refracted and bounced back. At the same time, due to the setting of the baffle 40, when the noise waves come into contact with the first surface 41 or the second surface 42, they are also continuously refracted and bounced back. In addition, since the second surface 42 is a concave surface facing the second vent 12, it can also block the sound waves flowing through the middle of the air duct 30 but not coming into contact with the first cavity plate 20 and the second cavity plate 80, thereby continuously weakening the sound waves and reducing the noise.

[0046] Please refer to Figure 5, which illustrates a cross-sectional view of the first cavity plate and the baffle in the ventilation device provided in an embodiment of this application. In some embodiments, the first protruding section 21 and the second protruding section 81 are arranged opposite to each other, and the air duct 30 has multiple air duct sections 31 connected end to end, with the air duct sections 31 located between the first protruding section 21 and the second protruding section 81. Each air duct section 31 has a gradually expanding section 312, a wide section 313, and a gradually narrowing section 314 connected sequentially along a first direction X. At least a portion of the baffle 40 is disposed in the gradually expanding section 312, and the direction from the first ventilation opening 11 to the second ventilation opening 12 is the first direction X. Specifically, by setting the gradually expanding section 312, the wide section 313, and the gradually narrowing section 314, the air duct section 31 is made into a variable cavity structure that is wide at first and then narrows. After multiple air duct sections 31 are connected end to end, the entire air duct 30 presents a continuous variable cavity structure that is wide at first, then narrows, then widens again, and then narrows again. Thus, after the sound waves of noise come into contact with the surfaces of the first protruding section 21 and the second protruding section 81 facing the air duct 30, they continuously contact the surfaces of the first protruding section 21 and the second protruding section 81 corresponding to the expanding section 312, the wide section 313, and the contracting section 314. This increases the frequency of sound wave refraction and rebound, further enhancing the noise reduction effect. Simultaneously, by placing at least a portion of the baffle 40 in the expanding section 312, sound waves flowing through the middle of the air duct 30 but not contacting the surfaces of the first protruding section 21 and the second protruding section 81 can be blocked before the noise enters the contracting section 314.

[0047] In some embodiments, the duct section 31 further has a narrow section 311, which connects the tapering section 314 and the expanding section 312 in the next duct section 31. Specifically, referring again to Figures 3 and 5, when the ventilation device takes in air from the first vent 11 and exits air from the second vent 12, the first protruding section 21 and the second protruding section 81 corresponding to the narrow section 311 provide guidance for the airflow after passing through the tapering section 314, further ensuring the ventilation effect of the ventilation device; at the same time, noise is transmitted from the second vent 12 to the first vent 11, and the first protruding section 21 and the second protruding section 81 corresponding to the narrow section 311 provide more surfaces for refraction and rebound of the noise sound waves, thereby enhancing the attenuation effect of the sound waves. Similarly, referring again to Figures 4 and 5, when the ventilation device draws in air from the second vent 12 and exits from the first vent 11, the first protruding section 21 and the second protruding section 81 corresponding to the narrow section 311 provide guidance for the airflow after passing through the narrow section 311, further ensuring the ventilation effect of the ventilation device. Simultaneously, as noise is transmitted from the second vent 12 to the first vent 11, the first protruding section 21 and the second protruding section 81 corresponding to the narrow section 311 provide more surfaces for refraction and rebound of the noise sound waves, thereby enhancing the attenuation effect. It is understood that along the second direction Y, the size of the baffle 40 should be greater than or equal to the size of the narrow section 311, thereby preventing noise from escaping through the gaps between the first protruding section 21 and the baffle 40, and between the second protruding section 81 and the baffle 40. This achieves the attenuation effect of the noise sound waves, reducing noise; that is, along the first direction X, the projection of the baffle 40 can cover the narrow section 311.

[0048] In some embodiments, the ventilation device further includes: sound-absorbing cotton 50, which is at least partially disposed on the first cavity plate 20, and / or, at least partially disposed on the second cavity plate 80. Referring again to Figures 3, 4, and 5, due to the expanding section 312, wide section 313, and contracting section 314 disposed in the air duct 30, the sound waves of noise are refracted and rebound at the surfaces of the first protruding section 21 and the second protruding section 81 corresponding to the expanding section 312, wide section 313, and contracting section 314. Therefore, by at least partially disposing of the sound-absorbing cotton 50 on the surfaces of the first protruding section 21 and the second protruding section 81 corresponding to the expanding section 312, wide section 313, and contracting section 314, noise absorption can be achieved. Based on this, in order to further improve the sound absorption effect of the sound-absorbing cotton 50, the sound-absorbing cotton 50 can also be covered on the entire surface of the first protruding section 21 and the second protruding section 81 facing the air duct 30, or on the entire surface of the first cavity plate 20 and the second cavity plate 80 facing the air duct 30, so as to increase the area of ​​the sound-absorbing cotton 50 that absorbs noise.

[0049] Please refer to Figure 6, which illustrates a cross-sectional view of the baffle in the ventilation device provided in this application embodiment. In some embodiments, the sound-absorbing cotton 50 is at least partially disposed on the first surface 41, and / or, at least partially disposed on the second surface 42. Specifically, since both the first surface 41 and the second surface 42 of the baffle 40 can refract and rebound sound waves, and the refracted and rebounded sound waves will continue to contact the surfaces of the first protrusion 21 and the second protrusion 81, the sound-absorbing cotton 50 can be at least partially disposed on the first surface 41, or at least partially disposed on the second surface 42, or at least partially disposed on both the first surface 41 and the second surface 42, thereby achieving noise absorption. Furthermore, the sound-absorbing cotton 50 can also be completely covered on the first surface 41 and / or the second surface 42 to increase the sound absorption area and further enhance the noise reduction effect.

[0050] In some embodiments, the ventilation device includes a plurality of air ducts 30 arranged within the frame 10 along a second direction Y. Alternatively, the ventilation device may include a plurality of first cavity plates 20 and a plurality of second cavity plates 80, with air ducts 30 formed between adjacent first cavity plates 20 and second cavity plates 80. Since both the first cavity plates 20 and the second cavity plates 80 are plate-like structures, both surfaces along the second direction Y can be used for noise reflection. Furthermore, the plurality of first cavity plates 20 and the plurality of second cavity plates 80 are arranged alternately along the second direction Y; that is, along the second direction Y, the sequence is first cavity plate 20, second cavity plate 80, first cavity plate 20, second cavity plate 80, or second cavity plate 80, first cavity plate 20, second cavity plate 80, first cavity plate 20, and so on, until all the internal accommodating space of the frame 10 is utilized. In this arrangement, excluding the area near the edge of frame 10, along the second direction Y, a first cavity plate 20 is provided on both sides of the second cavity plate 80. One side of the second cavity plate 80 forms an air duct 30 with one first cavity plate 20, and the other side of the second cavity plate 80 forms another air duct 30 with another first cavity plate 20. Similarly, a second cavity plate 80 is provided on both sides of the first cavity plate 20. One side of the first cavity plate 20 forms an air duct 30 with one second cavity plate 80, and the other side of the first cavity plate 20 forms another air duct 30 with another second cavity plate 80. It can be understood that due to the setting of the first protrusion 21 and the second protrusion 81, each air duct 30 is a continuous variable cavity structure, which can achieve a noise reduction effect. In addition, by setting multiple air ducts 30, this application enables air intake or exhaust processes in each air duct 30, and simultaneously reduces noise in each air duct 30. It is understandable that, with the intake and exhaust air volumes of the ventilation device remaining constant, as the number of air ducts 30 increases, the air volume and noise level passing through each air duct 30 will decrease, and correspondingly, the noise reduction effect of each air duct 30 will be better. Thus, while ensuring ventilation of the ventilation device, this application can improve the noise reduction effect of the ventilation device by increasing the number of air ducts 30.

[0051] In some embodiments, both the first cavity plate 20 and the second cavity plate 80 are corrugated. Specifically, the corrugated first cavity plate 20 and the second cavity plate 80 make the cavity of the air duct 30 more smoothly, improve the flow characteristics of airflow through the cavity plates, reduce resistance and turbulence, increase the inlet and outlet air rates, and improve the ventilation efficiency of the ventilation device. At the same time, the corrugated first cavity plate 20 and the second cavity plate 80 increase the reflection area of ​​noise sound waves, thereby reducing the propagation and diffusion of noise, enabling the ventilation device to better control and reduce noise, and further improving the noise reduction effect of the ventilation device.

[0052] In some embodiments, the first cavity plate 20 is welded to the frame 10, the second cavity plate 80 is welded to the frame 10, and the baffle 40 is welded to the frame 10. Specifically, the welded connection provides a robust and sealed connection, ensuring no air leakage or loosening between the first cavity plate 20 and the frame 10, between the second cavity plate 80 and the frame 10, and between the baffle 40 and the frame 10. This effectively controls the airflow direction and noise flow direction in the ventilation device, improving the overall performance of the ventilation system and maintaining a stable air supply. Simultaneously, the welded connection makes the ventilation device's structure more stable and robust, helping it resist vibrations and impacts from the external environment, reducing noise or resonance problems generated during operation, and extending the service life of the ventilation device. Furthermore, the welded connection makes the interior of the ventilation device smoother and easier to clean, simplifying the maintenance and cleaning process and reducing maintenance costs.

[0053] Referring again to Figure 1, in some embodiments, the ventilation device further includes a vent assembly 60, which covers the first vent 11. The vent assembly 60 has multiple through holes 61 communicating with the first vent 11. Specifically, the vent assembly 60 and the through holes 61 can prevent dust, particulate matter, and other pollutants from entering the ventilation system, thereby improving the ventilation quality of the ventilation device, preventing wear, blockage, and damage inside the ventilation device, extending the service life of the ventilation device, reducing the need for maintenance and cleaning, and lowering maintenance costs.

[0054] The ventilation device provided in this application, through multiple first protrusions 21 of the first cavity plate 20 and the second protrusions 81 of the second cavity plate 80, makes the air duct 30 a continuous variable cavity structure. The sound waves of noise are continuously refracted and bounced back in the air duct 30, weakening the sound waves, thereby reducing the noise generated during ventilation and avoiding the impact on the external environment.

[0055] Accordingly, this application also provides an energy storage system. Please refer to Figures 7, 8, and 9. Figure 7 illustrates a structural schematic diagram of the energy storage system provided in an embodiment of this application; Figure 8 illustrates a front view of the energy storage system provided in an embodiment of this application; and Figure 9 illustrates a cross-sectional schematic diagram of BB in Figure 8. The energy storage system includes: an energy storage cabinet; and a ventilation device as described in any of the above embodiments, wherein the ventilation device is installed on the energy storage cabinet.

[0056] Specifically, the energy storage cabinet includes a housing 70, which has a connected air inlet 71 and an air outlet 72. A second ventilation opening 12 of the ventilation system is positioned over the air inlet 71 on the side facing away from the housing 70, and / or, the second ventilation opening 12 is positioned over the air outlet 72 on the side facing away from the housing 70. It is understood that the housing 70 typically houses electrical components such as a liquid-cooled unit compartment, a battery compartment, and an electrical compartment. These electrical components generate noise during operation within the housing 70. This noise enters the ventilation duct 30 and is reduced by the first cavity plate 20, the second cavity plate 80, and the baffle 40 to prevent impact on the external environment.

[0057] Specifically, when the second vent 12 of the ventilation device covers the side of the air inlet 71 facing away from the housing 70, the ventilation device takes in air through the first vent 11 and exits air through the second vent 12. Noise waves are transmitted from the second vent 12 to the first vent 11, and the direction of air intake in the ventilation device is opposite to the direction of noise wave transmission. At this time, after the air enters the air duct 30 from the first vent 11, the air is guided by the first surface 41, which is a convex surface facing the first vent 11, reducing the air resistance within the air duct 30 and maintaining the ventilation effect of the ventilation device. When the noise waves enter the air duct 30 through the second vent 12, the air duct 30 becomes a continuous variable cavity structure due to the multiple first protrusions 21 of the first cavity plate 20 and the second protrusions 81 of the second cavity plate 80. After the noise waves come into contact with the surfaces of the first cavity plate 20 and the second cavity plate 80 facing the air duct 30, they are continuously refracted and bounced back. At the same time, due to the setting of the baffle 40, when the noise waves come into contact with the first surface 41 or the second surface 42, they are also continuously refracted and bounced back. In addition, since the second surface 42 is a concave surface facing the second vent 12, it can also block the sound waves flowing through the middle of the air duct 30 but not coming into contact with the first cavity plate 20 and the second cavity plate 80, thereby continuously weakening the sound waves, reducing noise, and preventing the noise generated in the housing 70 from affecting the external environment.

[0058] Similarly, when the second vent 12 is installed on the side of the air outlet 72 facing away from the housing 70, the ventilation device takes in air through the second vent 12 and exits through the first vent 11. Noise waves also travel from the second vent 12 to the first vent 11, with the air intake direction and the noise wave transmission direction being the same. At this time, after the air enters the air duct 30 through the second vent 12, due to the gaps between the first cavity plate 20 and the baffle 40, and between the second cavity plate and the baffle 40, the air can bypass the baffle 40 and exit the air duct 30, maintaining the ventilation effect of the ventilation device. When the noise waves enter the air duct 30 through the second vent 12, the air duct 30 becomes a continuous variable cavity structure due to the multiple first protrusions 21 of the first cavity plate 20 and the second protrusions 81 of the second cavity plate 80. After the noise waves come into contact with the surfaces of the first cavity plate 20 and the second cavity plate 80 facing the air duct 30, they are continuously refracted and bounced back. At the same time, due to the setting of the baffle 40, when the noise waves come into contact with the first surface 41 or the second surface 42, they are also continuously refracted and bounced back. In addition, since the second surface 42 is a concave surface facing the second vent 12, it can also block the sound waves flowing through the middle of the air duct 30 but not coming into contact with the first cavity plate 20 and the second cavity plate 80, thereby continuously weakening the sound waves, reducing noise, and preventing the noise generated in the housing 70 from affecting the external environment.

[0059] It is understood that the energy storage system provided in this application embodiment will not be described in detail here.

[0060] The above provides a detailed description of a ventilation device and energy storage system provided in the embodiments of this application. Specific examples have been used in this application to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A ventilation device, wherein, include: The frame (10) has a first vent (11) and a second vent (12); A first cavity plate (20) is disposed within the frame (10) and connected to the frame (10). The first cavity plate (20) has a plurality of first protrusions (21). A second cavity plate (80) is disposed within the frame (10) and connected to the frame (10). The second cavity plate (80) has a plurality of second protrusions (81). The protrusions of the second protrusions (81) are opposite to those of the first protrusions (21). A duct (30) connecting the first cavity plate (20) and the second cavity plate (80) is formed between them.

2. The ventilation device according to claim 1, wherein, Also includes: Multiple baffles (40) are disposed in the air duct (30). Each baffle (40) includes a first surface (41) and a second surface (42) facing away from each other. The first surface (41) is a convex surface facing the first vent (11), and the second surface (42) is a concave surface facing the second vent (12).

3. The ventilation device according to claim 2, wherein, The first protruding section (21) and the second protruding section (81) are arranged opposite to each other. The air duct (30) has a plurality of air duct sections (31) that are connected end to end. The air duct section (31) is located between the first protruding section (21) and the second protruding section (81). Each air duct section (31) has a gradually expanding section (312), a wide section (313) and a gradually narrowing section (314) that are connected sequentially along a first direction (X). At least a portion of the baffle (40) is arranged in the gradually expanding section (312). The direction in which the first vent (11) points to the second vent (12) is the first direction (X).

4. The ventilation device according to claim 3, wherein, The air duct section (31) also has a narrow section (311) that connects the tapering section (314) and the expanding section (312) in the next air duct section (31).

5. The ventilation device according to claim 1, wherein, Also includes: The sound-absorbing cotton (50) is at least partially disposed in the first cavity plate (20), and / or the sound-absorbing cotton (50) is at least partially disposed in the second cavity plate (80).

6. The ventilation device according to claim 2, wherein, Also includes: The sound-absorbing cotton (50) is at least partially disposed on the first surface (41), and / or the sound-absorbing cotton (50) is at least partially disposed on the second surface (42).

7. The ventilation device according to claim 1, wherein, It includes multiple air ducts (30), which are arranged within the frame (10).

8. The ventilation device according to claim 1, wherein, Both the first cavity plate (20) and the second cavity plate (80) are wave-shaped.

9. The ventilation device according to claim 2, wherein, The first cavity plate (20) is welded to the frame (10), the second cavity plate (80) is welded to the frame (10), and the baffle (40) is welded to the frame (10).

10. The ventilation device according to claim 1, wherein, Also includes: A ventilation port assembly (60) is provided on the first ventilation port (11), and the ventilation port assembly (60) has a plurality of through holes (61) communicating with the first ventilation port (11).

11. An energy storage system, wherein, include: Energy storage cabinet; The ventilation device as described in any one of claims 1 to 10, wherein the ventilation device is installed on the energy storage cabinet.

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